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Toshio Sekiya
Fixed typo in sec4.src.md.
03 дек 2025, 14:25
03 дек 2025, 14:25b3d5aaf
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<h1 id="tfewindow">TfeWindow</h1>
<h2 id="the-tfe-window-and-xml-files">The Tfe window and XML files</h2>
<p>The following is the window of Tfe.</p>
<figure>
<img src="image/tfe6.png" alt="tfe6" />
<figcaption aria-hidden="true">tfe6</figcaption>
</figure>
<ul>
<li>Open, save and close buttons are placed on the toolbar. In addition,
GtkMenuButton is added to the toolbar. This button shows a popup menu
when clicked on. Here, popup means widely, including pull-down
menu.</li>
<li>New, save-as, preference and quit items are put into the menu.</li>
</ul>
<p>This makes the most frequently used operation bound to the tool bar
buttons. And the others are stored in behind the menus. So, it is more
practical.</p>
<p>The window is a composite widget. The definition is described in the
XML file <code>tfewindow.ui</code>.</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode numberSource xml numberLines"><code class="sourceCode xml"><span id="cb1-1"><a href="#cb1-1"></a><span class="fu">&lt;?xml</span><span class="ot"> version=</span><span class="st">&quot;1.0&quot;</span><span class="ot"> encoding=</span><span class="st">&quot;UTF-8&quot;</span><span class="fu">?&gt;</span></span>
<span id="cb1-2"><a href="#cb1-2"></a>&lt;<span class="kw">interface</span>&gt;</span>
<span id="cb1-3"><a href="#cb1-3"></a>  &lt;<span class="kw">template</span><span class="ot"> class=</span><span class="st">&quot;TfeWindow&quot;</span><span class="ot"> parent=</span><span class="st">&quot;GtkApplicationWindow&quot;</span>&gt;</span>
<span id="cb1-4"><a href="#cb1-4"></a>    &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;title&quot;</span>&gt;Text File Editor&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-5"><a href="#cb1-5"></a>    &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;default-width&quot;</span>&gt;600&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-6"><a href="#cb1-6"></a>    &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;default-height&quot;</span>&gt;400&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-7"><a href="#cb1-7"></a>    &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-8"><a href="#cb1-8"></a>      &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkBox&quot;</span><span class="ot"> id=</span><span class="st">&quot;boxv&quot;</span>&gt;</span>
<span id="cb1-9"><a href="#cb1-9"></a>        &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;orientation&quot;</span>&gt;GTK_ORIENTATION_VERTICAL&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-10"><a href="#cb1-10"></a>        &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-11"><a href="#cb1-11"></a>          &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkBox&quot;</span><span class="ot"> id=</span><span class="st">&quot;boxh&quot;</span>&gt;</span>
<span id="cb1-12"><a href="#cb1-12"></a>            &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;orientation&quot;</span>&gt;GTK_ORIENTATION_HORIZONTAL&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-13"><a href="#cb1-13"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-14"><a href="#cb1-14"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkLabel&quot;</span>&gt;</span>
<span id="cb1-15"><a href="#cb1-15"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;width-chars&quot;</span>&gt;10&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-16"><a href="#cb1-16"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-17"><a href="#cb1-17"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-18"><a href="#cb1-18"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-19"><a href="#cb1-19"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkButton&quot;</span>&gt;</span>
<span id="cb1-20"><a href="#cb1-20"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Open&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-21"><a href="#cb1-21"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;action-name&quot;</span>&gt;win.open&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-22"><a href="#cb1-22"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-23"><a href="#cb1-23"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-24"><a href="#cb1-24"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-25"><a href="#cb1-25"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkButton&quot;</span>&gt;</span>
<span id="cb1-26"><a href="#cb1-26"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Save&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-27"><a href="#cb1-27"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;action-name&quot;</span>&gt;win.save&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-28"><a href="#cb1-28"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-29"><a href="#cb1-29"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-30"><a href="#cb1-30"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-31"><a href="#cb1-31"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkLabel&quot;</span>&gt;</span>
<span id="cb1-32"><a href="#cb1-32"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;hexpand&quot;</span>&gt;TRUE&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-33"><a href="#cb1-33"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-34"><a href="#cb1-34"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-35"><a href="#cb1-35"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-36"><a href="#cb1-36"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkButton&quot;</span>&gt;</span>
<span id="cb1-37"><a href="#cb1-37"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Close&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-38"><a href="#cb1-38"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;action-name&quot;</span>&gt;win.close&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-39"><a href="#cb1-39"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-40"><a href="#cb1-40"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-41"><a href="#cb1-41"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-42"><a href="#cb1-42"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkMenuButton&quot;</span><span class="ot"> id=</span><span class="st">&quot;btnm&quot;</span>&gt;</span>
<span id="cb1-43"><a href="#cb1-43"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;direction&quot;</span>&gt;down&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-44"><a href="#cb1-44"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;icon-name&quot;</span>&gt;open-menu-symbolic&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-45"><a href="#cb1-45"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-46"><a href="#cb1-46"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-47"><a href="#cb1-47"></a>            &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-48"><a href="#cb1-48"></a>              &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkLabel&quot;</span>&gt;</span>
<span id="cb1-49"><a href="#cb1-49"></a>                &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;width-chars&quot;</span>&gt;10&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-50"><a href="#cb1-50"></a>              &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-51"><a href="#cb1-51"></a>            &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-52"><a href="#cb1-52"></a>          &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-53"><a href="#cb1-53"></a>        &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-54"><a href="#cb1-54"></a>        &lt;<span class="kw">child</span>&gt;</span>
<span id="cb1-55"><a href="#cb1-55"></a>          &lt;<span class="kw">object</span><span class="ot"> class=</span><span class="st">&quot;GtkNotebook&quot;</span><span class="ot"> id=</span><span class="st">&quot;nb&quot;</span>&gt;</span>
<span id="cb1-56"><a href="#cb1-56"></a>            &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;scrollable&quot;</span>&gt;TRUE&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-57"><a href="#cb1-57"></a>            &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;hexpand&quot;</span>&gt;TRUE&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-58"><a href="#cb1-58"></a>            &lt;<span class="kw">property</span><span class="ot"> name=</span><span class="st">&quot;vexpand&quot;</span>&gt;TRUE&lt;/<span class="kw">property</span>&gt;</span>
<span id="cb1-59"><a href="#cb1-59"></a>          &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-60"><a href="#cb1-60"></a>        &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-61"><a href="#cb1-61"></a>      &lt;/<span class="kw">object</span>&gt;</span>
<span id="cb1-62"><a href="#cb1-62"></a>    &lt;/<span class="kw">child</span>&gt;</span>
<span id="cb1-63"><a href="#cb1-63"></a>  &lt;/<span class="kw">template</span>&gt;</span>
<span id="cb1-64"><a href="#cb1-64"></a>&lt;/<span class="kw">interface</span>&gt;</span></code></pre></div>
<ul>
<li>Three buttons “Open”, “Save” and “Close” are defined. You can use
two ways to catch the button click event. The one is “clicked” signal
and the other is to register an action to the button. The first way is
simple. You can connects the signal and your handler directly. The
second way is like menu items. When the button is clicked, the
corresponding action is activated. It is a bit complicated because you
need to create an action and its “activate” handler in advance. But one
advantage is you can connect two or more things to the action. For
example, an accelerator can be connected to the action. Accelerators are
keys that connects to actions. For example, Ctrl+O is often connected to
a file open action. So, both open button and Ctrl+O activates an open
action. The latter way is used in the XML file above.</li>
<li>You can specify a theme icon to GtkMenuButton with “icon-name”
poperty. The “open-menu-symbolic” is an image that is called hamburger
menu.</li>
</ul>
<p>The <code>menu.ui</code> XML file defines the menu for
GtkMenuButton.</p>
<div class="sourceCode" id="cb2"><pre
class="sourceCode numberSource xml numberLines"><code class="sourceCode xml"><span id="cb2-1"><a href="#cb2-1"></a><span class="fu">&lt;?xml</span><span class="ot"> version=</span><span class="st">&quot;1.0&quot;</span><span class="ot"> encoding=</span><span class="st">&quot;UTF-8&quot;</span><span class="fu">?&gt;</span></span>
<span id="cb2-2"><a href="#cb2-2"></a>&lt;<span class="kw">interface</span>&gt;</span>
<span id="cb2-3"><a href="#cb2-3"></a>  &lt;<span class="kw">menu</span><span class="ot"> id=</span><span class="st">&quot;menu&quot;</span>&gt;</span>
<span id="cb2-4"><a href="#cb2-4"></a>    &lt;<span class="kw">section</span>&gt;</span>
<span id="cb2-5"><a href="#cb2-5"></a>      &lt;<span class="kw">item</span>&gt;</span>
<span id="cb2-6"><a href="#cb2-6"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;New&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-7"><a href="#cb2-7"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;action&quot;</span>&gt;win.new&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-8"><a href="#cb2-8"></a>      &lt;/<span class="kw">item</span>&gt;</span>
<span id="cb2-9"><a href="#cb2-9"></a>      &lt;<span class="kw">item</span>&gt;</span>
<span id="cb2-10"><a href="#cb2-10"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Save As…&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-11"><a href="#cb2-11"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;action&quot;</span>&gt;win.saveas&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-12"><a href="#cb2-12"></a>      &lt;/<span class="kw">item</span>&gt;</span>
<span id="cb2-13"><a href="#cb2-13"></a>    &lt;/<span class="kw">section</span>&gt;</span>
<span id="cb2-14"><a href="#cb2-14"></a>    &lt;<span class="kw">section</span>&gt;</span>
<span id="cb2-15"><a href="#cb2-15"></a>      &lt;<span class="kw">item</span>&gt;</span>
<span id="cb2-16"><a href="#cb2-16"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Preference&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-17"><a href="#cb2-17"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;action&quot;</span>&gt;win.pref&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-18"><a href="#cb2-18"></a>      &lt;/<span class="kw">item</span>&gt;</span>
<span id="cb2-19"><a href="#cb2-19"></a>    &lt;/<span class="kw">section</span>&gt;</span>
<span id="cb2-20"><a href="#cb2-20"></a>    &lt;<span class="kw">section</span>&gt;</span>
<span id="cb2-21"><a href="#cb2-21"></a>      &lt;<span class="kw">item</span>&gt;</span>
<span id="cb2-22"><a href="#cb2-22"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;label&quot;</span>&gt;Quit&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-23"><a href="#cb2-23"></a>        &lt;<span class="kw">attribute</span><span class="ot"> name=</span><span class="st">&quot;action&quot;</span>&gt;win.close-all&lt;/<span class="kw">attribute</span>&gt;</span>
<span id="cb2-24"><a href="#cb2-24"></a>      &lt;/<span class="kw">item</span>&gt;</span>
<span id="cb2-25"><a href="#cb2-25"></a>    &lt;/<span class="kw">section</span>&gt;</span>
<span id="cb2-26"><a href="#cb2-26"></a>  &lt;/<span class="kw">menu</span>&gt;</span>
<span id="cb2-27"><a href="#cb2-27"></a>&lt;/<span class="kw">interface</span>&gt;</span></code></pre></div>
<p>There are four menu items and they are connected to actions.</p>
<h2 id="the-header-file">The header file</h2>
<p>The following is the codes of <code>tfewindow.h</code>.</p>
<div class="sourceCode" id="cb3"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb3-1"><a href="#cb3-1"></a><span class="pp">#pragma once</span></span>
<span id="cb3-2"><a href="#cb3-2"></a></span>
<span id="cb3-3"><a href="#cb3-3"></a><span class="pp">#include </span><span class="im">&lt;gtk/gtk.h&gt;</span></span>
<span id="cb3-4"><a href="#cb3-4"></a></span>
<span id="cb3-5"><a href="#cb3-5"></a><span class="pp">#define TFE_TYPE_WINDOW tfe_window_get_type </span><span class="op">()</span></span>
<span id="cb3-6"><a href="#cb3-6"></a>G_DECLARE_FINAL_TYPE <span class="op">(</span>TfeWindow<span class="op">,</span> tfe_window<span class="op">,</span> TFE<span class="op">,</span> WINDOW<span class="op">,</span> GtkApplicationWindow<span class="op">)</span></span>
<span id="cb3-7"><a href="#cb3-7"></a></span>
<span id="cb3-8"><a href="#cb3-8"></a><span class="dt">void</span></span>
<span id="cb3-9"><a href="#cb3-9"></a>tfe_window_notebook_page_new <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">);</span></span>
<span id="cb3-10"><a href="#cb3-10"></a></span>
<span id="cb3-11"><a href="#cb3-11"></a><span class="dt">void</span></span>
<span id="cb3-12"><a href="#cb3-12"></a>tfe_window_notebook_page_new_with_files <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">,</span> GFile <span class="op">**</span>files<span class="op">,</span> <span class="dt">int</span> n_files<span class="op">);</span></span>
<span id="cb3-13"><a href="#cb3-13"></a></span>
<span id="cb3-14"><a href="#cb3-14"></a>GtkWidget <span class="op">*</span></span>
<span id="cb3-15"><a href="#cb3-15"></a>tfe_window_new <span class="op">(</span>GtkApplication <span class="op">*</span>app<span class="op">);</span></span></code></pre></div>
<ul>
<li>5-6: <code>TFE_TYPE_WINDOW</code> definition and the
<code>G_DECLARE_FINAL_TYPE</code> macro.</li>
<li>8-15: Public functions. The first two functions creates a notebook
page and the last function creates a window.</li>
</ul>
<h2 id="c-file">C file</h2>
<h3 id="a-composite-widget">A composite widget</h3>
<p>The following codes are extracted from <code>tfewindow.c</code>.</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode C"><code class="sourceCode c"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="pp">#include </span><span class="im">&lt;gtk/gtk.h&gt;</span></span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="pp">#include </span><span class="im">&quot;tfewindow.h&quot;</span></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="kw">struct</span> _TfeWindow <span class="op">{</span></span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a>  GtkApplicationWindow parent<span class="op">;</span></span>
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a>  GtkMenuButton <span class="op">*</span>btnm<span class="op">;</span></span>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a>  GtkNotebook <span class="op">*</span>nb<span class="op">;</span></span>
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a>  gboolean is_quit<span class="op">;</span></span>
<span id="cb4-9"><a href="#cb4-9" aria-hidden="true" tabindex="-1"></a><span class="op">};</span></span>
<span id="cb4-10"><a href="#cb4-10" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-11"><a href="#cb4-11" aria-hidden="true" tabindex="-1"></a>G_DEFINE_FINAL_TYPE <span class="op">(</span>TfeWindow<span class="op">,</span> tfe_window<span class="op">,</span> GTK_TYPE_APPLICATION_WINDOW<span class="op">);</span></span>
<span id="cb4-12"><a href="#cb4-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-13"><a href="#cb4-13" aria-hidden="true" tabindex="-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb4-14"><a href="#cb4-14" aria-hidden="true" tabindex="-1"></a>tfe_window_dispose <span class="op">(</span>GObject <span class="op">*</span>gobject<span class="op">)</span> <span class="op">{</span></span>
<span id="cb4-15"><a href="#cb4-15" aria-hidden="true" tabindex="-1"></a>  gtk_widget_dispose_template <span class="op">(</span>GTK_WIDGET <span class="op">(</span>gobject<span class="op">),</span> TFE_TYPE_WINDOW<span class="op">);</span></span>
<span id="cb4-16"><a href="#cb4-16" aria-hidden="true" tabindex="-1"></a>  G_OBJECT_CLASS <span class="op">(</span>tfe_window_parent_class<span class="op">)-&gt;</span>dispose <span class="op">(</span>gobject<span class="op">);</span></span>
<span id="cb4-17"><a href="#cb4-17" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span>
<span id="cb4-18"><a href="#cb4-18" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-19"><a href="#cb4-19" aria-hidden="true" tabindex="-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb4-20"><a href="#cb4-20" aria-hidden="true" tabindex="-1"></a>tfe_window_init <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb4-21"><a href="#cb4-21" aria-hidden="true" tabindex="-1"></a>  GtkBuilder <span class="op">*</span>build<span class="op">;</span></span>
<span id="cb4-22"><a href="#cb4-22" aria-hidden="true" tabindex="-1"></a>  GMenuModel <span class="op">*</span>menu<span class="op">;</span></span>
<span id="cb4-23"><a href="#cb4-23" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-24"><a href="#cb4-24" aria-hidden="true" tabindex="-1"></a>  gtk_widget_init_template <span class="op">(</span>GTK_WIDGET <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb4-25"><a href="#cb4-25" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-26"><a href="#cb4-26" aria-hidden="true" tabindex="-1"></a>  build <span class="op">=</span> gtk_builder_new_from_resource <span class="op">(</span><span class="st">&quot;/com/github/ToshioCP/tfe/menu.ui&quot;</span><span class="op">);</span></span>
<span id="cb4-27"><a href="#cb4-27" aria-hidden="true" tabindex="-1"></a>  menu <span class="op">=</span> G_MENU_MODEL <span class="op">(</span>gtk_builder_get_object <span class="op">(</span>build<span class="op">,</span> <span class="st">&quot;menu&quot;</span><span class="op">));</span></span>
<span id="cb4-28"><a href="#cb4-28" aria-hidden="true" tabindex="-1"></a>  gtk_menu_button_set_menu_model <span class="op">(</span>win<span class="op">-&gt;</span>btnm<span class="op">,</span> menu<span class="op">);</span></span>
<span id="cb4-29"><a href="#cb4-29" aria-hidden="true" tabindex="-1"></a>  g_object_unref<span class="op">(</span>build<span class="op">);</span></span>
<span id="cb4-30"><a href="#cb4-30" aria-hidden="true" tabindex="-1"></a><span class="op">...</span> <span class="op">...</span> <span class="op">...</span></span>
<span id="cb4-31"><a href="#cb4-31" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span>
<span id="cb4-32"><a href="#cb4-32" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-33"><a href="#cb4-33" aria-hidden="true" tabindex="-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb4-34"><a href="#cb4-34" aria-hidden="true" tabindex="-1"></a>tfe_window_class_init <span class="op">(</span>TfeWindowClass <span class="op">*</span>class<span class="op">)</span> <span class="op">{</span></span>
<span id="cb4-35"><a href="#cb4-35" aria-hidden="true" tabindex="-1"></a>  GObjectClass <span class="op">*</span>object_class <span class="op">=</span> G_OBJECT_CLASS <span class="op">(</span>class<span class="op">);</span></span>
<span id="cb4-36"><a href="#cb4-36" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-37"><a href="#cb4-37" aria-hidden="true" tabindex="-1"></a>  object_class<span class="op">-&gt;</span>dispose <span class="op">=</span> tfe_window_dispose<span class="op">;</span></span>
<span id="cb4-38"><a href="#cb4-38" aria-hidden="true" tabindex="-1"></a>  gtk_widget_class_set_template_from_resource <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> <span class="st">&quot;/com/github/ToshioCP/tfe/tfewindow.ui&quot;</span><span class="op">);</span></span>
<span id="cb4-39"><a href="#cb4-39" aria-hidden="true" tabindex="-1"></a>  gtk_widget_class_bind_template_child <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> TfeWindow<span class="op">,</span> btnm<span class="op">);</span></span>
<span id="cb4-40"><a href="#cb4-40" aria-hidden="true" tabindex="-1"></a>  gtk_widget_class_bind_template_child <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> TfeWindow<span class="op">,</span> nb<span class="op">);</span></span>
<span id="cb4-41"><a href="#cb4-41" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span>
<span id="cb4-42"><a href="#cb4-42" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-43"><a href="#cb4-43" aria-hidden="true" tabindex="-1"></a>GtkWidget <span class="op">*</span></span>
<span id="cb4-44"><a href="#cb4-44" aria-hidden="true" tabindex="-1"></a>tfe_window_new <span class="op">(</span>GtkApplication <span class="op">*</span>app<span class="op">)</span> <span class="op">{</span></span>
<span id="cb4-45"><a href="#cb4-45" aria-hidden="true" tabindex="-1"></a>  <span class="cf">return</span> GTK_WIDGET <span class="op">(</span>g_object_new <span class="op">(</span>TFE_TYPE_WINDOW<span class="op">,</span> <span class="st">&quot;application&quot;</span><span class="op">,</span> app<span class="op">,</span> NULL<span class="op">));</span></span>
<span id="cb4-46"><a href="#cb4-46" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span></code></pre></div>
<p>The program above is similar to <code>tfealert.c</code> and
<code>tfepref.c</code>. It uses the same way to build a composite
widget. But there’s one thing new. It is menu. The menu is built from
the XML resource <code>menu.ui</code> and inserted into the menu button.
It is done in the instance initialization function
<code>tfe_window_init</code>.</p>
<h3 id="actions">Actions</h3>
<p>Actions can belong to an application or window. Tfe only has one top
window and all the actions are registered in the window. For example,
“close-all” action destroys the top level window and that brings the
application to quit. You can make “app.quit” action instead of
“win.close-all”. It’s your choice. If your application has two or more
windows, both “app.quit” and “win:close-all”, which closes all the
notebook pages on the window, may be necessary. Anyway, you need to
consider that each action should belong to the application or a
window.</p>
<p>Actions are defined in the instance initialization function.</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode C"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a>tfe_window_init <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="op">...</span> <span class="op">...</span> <span class="op">...</span></span>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a><span class="co">/* ----- action ----- */</span></span>
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a>  <span class="dt">const</span> GActionEntry win_entries<span class="op">[]</span> <span class="op">=</span> <span class="op">{</span></span>
<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;open&quot;</span><span class="op">,</span> open_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;save&quot;</span><span class="op">,</span> save_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-8"><a href="#cb5-8" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;close&quot;</span><span class="op">,</span> close_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-9"><a href="#cb5-9" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;new&quot;</span><span class="op">,</span> new_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-10"><a href="#cb5-10" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;saveas&quot;</span><span class="op">,</span> saveas_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-11"><a href="#cb5-11" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;pref&quot;</span><span class="op">,</span> pref_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb5-12"><a href="#cb5-12" aria-hidden="true" tabindex="-1"></a>    <span class="op">{</span> <span class="st">&quot;close-all&quot;</span><span class="op">,</span> close_all_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">}</span></span>
<span id="cb5-13"><a href="#cb5-13" aria-hidden="true" tabindex="-1"></a>  <span class="op">};</span></span>
<span id="cb5-14"><a href="#cb5-14" aria-hidden="true" tabindex="-1"></a>  g_action_map_add_action_entries <span class="op">(</span>G_ACTION_MAP <span class="op">(</span>win<span class="op">),</span> win_entries<span class="op">,</span> G_N_ELEMENTS <span class="op">(</span>win_entries<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb5-15"><a href="#cb5-15" aria-hidden="true" tabindex="-1"></a><span class="op">...</span> <span class="op">...</span> <span class="op">...</span></span>
<span id="cb5-16"><a href="#cb5-16" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span></code></pre></div>
<p>Two things are necessary, an array and the
<code>g_action_map_add_action_entries</code> function.</p>
<ul>
<li>The element of the array is the GActionEntry structure. The
structure has the following members:
<ul>
<li>an action name</li>
<li>a handler for the activate signal</li>
<li>the type of the parameter or NULL for no parameter</li>
<li>the initial state for the action</li>
<li>a handler for the change-state signal</li>
</ul></li>
<li>The actions above are stateless and have no parameters. So, the
third parameter and after are all NULL.</li>
<li>The function <code>g_action_map_add_action_entries</code> adds the
actions in the <code>win_entries</code> array to the action map
<code>win</code>. The last argument <code>win</code> is the user_data,
which is the last argument of handlers.</li>
<li>All the handlers are in <code>tfewindow.c</code> program and shown
in the following subsections.</li>
</ul>
<h3 id="the-handlers-of-the-actions">The handlers of the actions</h3>
<h4 id="open_activated">open_activated</h4>
<p>The callback function <code>open_activated</code> is an activate
signal handler on “open” action.</p>
<div class="sourceCode" id="cb6"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb6-2"><a href="#cb6-2"></a>open_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb6-3"><a href="#cb6-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb6-4"><a href="#cb6-4"></a>  GtkWidget <span class="op">*</span>tv <span class="op">=</span> tfe_text_view_new <span class="op">();</span></span>
<span id="cb6-5"><a href="#cb6-5"></a></span>
<span id="cb6-6"><a href="#cb6-6"></a>  g_signal_connect <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> <span class="st">&quot;open-response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>open_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb6-7"><a href="#cb6-7"></a>  tfe_text_view_open <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb6-8"><a href="#cb6-8"></a><span class="op">}</span></span></code></pre></div>
<p>It connects the “open-response” signal on the newly created
TfeTextView instance and just calls <code>tfe_text_view_open</code>. It
leaves the rest of the task to the signal handler
<code>open_response_cb</code>.</p>
<div class="sourceCode" id="cb7"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb7-2"><a href="#cb7-2"></a>open_response_cb <span class="op">(</span>TfeTextView <span class="op">*</span>tv<span class="op">,</span> <span class="dt">int</span> response<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb7-3"><a href="#cb7-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb7-4"><a href="#cb7-4"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb7-5"><a href="#cb7-5"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb7-6"><a href="#cb7-6"></a></span>
<span id="cb7-7"><a href="#cb7-7"></a>  <span class="cf">if</span> <span class="op">(</span>response <span class="op">!=</span> TFE_OPEN_RESPONSE_SUCCESS<span class="op">)</span> <span class="op">{</span></span>
<span id="cb7-8"><a href="#cb7-8"></a>    g_object_ref_sink <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb7-9"><a href="#cb7-9"></a>    g_object_unref <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb7-10"><a href="#cb7-10"></a>  <span class="op">}</span><span class="cf">else</span> <span class="cf">if</span> <span class="op">(!</span> G_IS_FILE <span class="op">(</span>file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">)))</span> <span class="op">{</span></span>
<span id="cb7-11"><a href="#cb7-11"></a>    g_object_ref_sink <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb7-12"><a href="#cb7-12"></a>    g_object_unref <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb7-13"><a href="#cb7-13"></a>  <span class="op">}</span><span class="cf">else</span> <span class="op">{</span></span>
<span id="cb7-14"><a href="#cb7-14"></a>    filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb7-15"><a href="#cb7-15"></a>    g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb7-16"><a href="#cb7-16"></a>    notebook_page_build <span class="op">(</span>win<span class="op">,</span> GTK_WIDGET <span class="op">(</span>tv<span class="op">),</span> filename<span class="op">);</span></span>
<span id="cb7-17"><a href="#cb7-17"></a>    g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb7-18"><a href="#cb7-18"></a>  <span class="op">}</span></span>
<span id="cb7-19"><a href="#cb7-19"></a><span class="op">}</span></span></code></pre></div>
<p>If the TfeTextView instance failed to read a file, it destroys the
instance with <code>g_object_ref_sink</code> and
<code>g_object_unref</code>. Since newly created widgets are floating,
you need to convert the floating reference to the normal reference
before you release it. The conversion is done with
<code>g_object_ref_sink</code>.</p>
<p>If the instance successfully read the file, it calls
<code>notebook_page_build</code> to build a notebook page and add it to
the GtkNotebook object.</p>
<div class="sourceCode" id="cb8"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb8-1"><a href="#cb8-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb8-2"><a href="#cb8-2"></a>notebook_page_build <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">,</span> GtkWidget <span class="op">*</span>tv<span class="op">,</span> <span class="dt">char</span> <span class="op">*</span>filename<span class="op">)</span> <span class="op">{</span></span>
<span id="cb8-3"><a href="#cb8-3"></a>  <span class="co">// The arguments win, tb and filename are owned by the caller.</span></span>
<span id="cb8-4"><a href="#cb8-4"></a>  <span class="co">// If tv has a floating reference, it is consumed by the function.</span></span>
<span id="cb8-5"><a href="#cb8-5"></a>  GtkWidget <span class="op">*</span>scr <span class="op">=</span> gtk_scrolled_window_new <span class="op">();</span></span>
<span id="cb8-6"><a href="#cb8-6"></a>  GtkTextBuffer <span class="op">*</span>tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb8-7"><a href="#cb8-7"></a>  GtkNotebookPage <span class="op">*</span>nbp<span class="op">;</span></span>
<span id="cb8-8"><a href="#cb8-8"></a>  GtkWidget <span class="op">*</span>lab<span class="op">;</span></span>
<span id="cb8-9"><a href="#cb8-9"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb8-10"><a href="#cb8-10"></a></span>
<span id="cb8-11"><a href="#cb8-11"></a>  gtk_text_view_set_wrap_mode <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> GTK_WRAP_WORD_CHAR<span class="op">);</span></span>
<span id="cb8-12"><a href="#cb8-12"></a>  gtk_scrolled_window_set_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">),</span> tv<span class="op">);</span></span>
<span id="cb8-13"><a href="#cb8-13"></a>  lab <span class="op">=</span> gtk_label_new <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb8-14"><a href="#cb8-14"></a>  i <span class="op">=</span> gtk_notebook_append_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> scr<span class="op">,</span> lab<span class="op">);</span></span>
<span id="cb8-15"><a href="#cb8-15"></a>  nbp <span class="op">=</span> gtk_notebook_get_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> scr<span class="op">);</span></span>
<span id="cb8-16"><a href="#cb8-16"></a>  g_object_set <span class="op">(</span>nbp<span class="op">,</span> <span class="st">&quot;tab-expand&quot;</span><span class="op">,</span> TRUE<span class="op">,</span> NULL<span class="op">);</span></span>
<span id="cb8-17"><a href="#cb8-17"></a>  gtk_notebook_set_current_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb8-18"><a href="#cb8-18"></a>  g_signal_connect <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> <span class="st">&quot;change-file&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>file_changed_cb<span class="op">),</span> win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb8-19"><a href="#cb8-19"></a>  g_signal_connect <span class="op">(</span>tb<span class="op">,</span> <span class="st">&quot;modified-changed&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>modified_changed_cb<span class="op">),</span> tv<span class="op">);</span></span>
<span id="cb8-20"><a href="#cb8-20"></a><span class="op">}</span></span></code></pre></div>
<p>This function is a kind of library function and it is called from the
different three places.</p>
<p>This function creates a new GtkScrolledWindow instance and sets its
child to <code>tv</code>. Then it appends it to the GtkNotebook instance
<code>win-&gt;nb</code>. And it sets the tab label to the filename.</p>
<p>After the building, it connects two signals and handlers.</p>
<ul>
<li>“change-file” signal and <code>file_changed_cb</code> handler. If
the TfeTextView instance changes the file, the handler is called and the
notebook page tab is updated.</li>
<li>“modified-changed” signal and <code>modified_changed_cb</code>
handler. If the text in the buffer of TfeTextView instance is modified,
an asterisk is added at the beginning of the filename of the notebook
page tab. If the text is saved to the file, the asterisk is removed. The
asterisk tells the user that the text has been modified or not.</li>
</ul>
<div class="sourceCode" id="cb9"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb9-1"><a href="#cb9-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb9-2"><a href="#cb9-2"></a>file_changed_cb <span class="op">(</span>TfeTextView <span class="op">*</span>tv<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb9-3"><a href="#cb9-3"></a>  GtkNotebook <span class="op">*</span>nb <span class="op">=</span>  GTK_NOTEBOOK <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb9-4"><a href="#cb9-4"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb9-5"><a href="#cb9-5"></a>  GtkWidget <span class="op">*</span>label<span class="op">;</span></span>
<span id="cb9-6"><a href="#cb9-6"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb9-7"><a href="#cb9-7"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb9-8"><a href="#cb9-8"></a></span>
<span id="cb9-9"><a href="#cb9-9"></a>  file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb9-10"><a href="#cb9-10"></a>  scr <span class="op">=</span> gtk_widget_get_parent <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb9-11"><a href="#cb9-11"></a>  <span class="cf">if</span> <span class="op">(</span>G_IS_FILE <span class="op">(</span>file<span class="op">))</span> <span class="op">{</span></span>
<span id="cb9-12"><a href="#cb9-12"></a>    filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb9-13"><a href="#cb9-13"></a>    g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb9-14"><a href="#cb9-14"></a>  <span class="op">}</span> <span class="cf">else</span></span>
<span id="cb9-15"><a href="#cb9-15"></a>    filename <span class="op">=</span> get_untitled <span class="op">();</span></span>
<span id="cb9-16"><a href="#cb9-16"></a>  label <span class="op">=</span> gtk_label_new <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb9-17"><a href="#cb9-17"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb9-18"><a href="#cb9-18"></a>  gtk_notebook_set_tab_label <span class="op">(</span>GTK_NOTEBOOK <span class="op">(</span>nb<span class="op">),</span> scr<span class="op">,</span> label<span class="op">);</span></span>
<span id="cb9-19"><a href="#cb9-19"></a><span class="op">}</span></span>
<span id="cb9-20"><a href="#cb9-20"></a></span>
<span id="cb9-21"><a href="#cb9-21"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb9-22"><a href="#cb9-22"></a>modified_changed_cb <span class="op">(</span>GtkTextBuffer <span class="op">*</span>tb<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb9-23"><a href="#cb9-23"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> TFE_TEXT_VIEW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb9-24"><a href="#cb9-24"></a>  GtkWidget <span class="op">*</span>scr <span class="op">=</span> gtk_widget_get_parent <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb9-25"><a href="#cb9-25"></a>  GtkWidget <span class="op">*</span>nb <span class="op">=</span>  gtk_widget_get_ancestor <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">),</span> GTK_TYPE_NOTEBOOK<span class="op">);</span></span>
<span id="cb9-26"><a href="#cb9-26"></a>  GtkWidget <span class="op">*</span>label<span class="op">;</span></span>
<span id="cb9-27"><a href="#cb9-27"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb9-28"><a href="#cb9-28"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb9-29"><a href="#cb9-29"></a>  <span class="dt">char</span> <span class="op">*</span>text<span class="op">;</span></span>
<span id="cb9-30"><a href="#cb9-30"></a></span>
<span id="cb9-31"><a href="#cb9-31"></a>  file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb9-32"><a href="#cb9-32"></a>  filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb9-33"><a href="#cb9-33"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span></span>
<span id="cb9-34"><a href="#cb9-34"></a>    text <span class="op">=</span> g_strdup_printf <span class="op">(</span><span class="st">&quot;*</span><span class="sc">%s</span><span class="st">&quot;</span><span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb9-35"><a href="#cb9-35"></a>  <span class="cf">else</span></span>
<span id="cb9-36"><a href="#cb9-36"></a>    text <span class="op">=</span> g_strdup <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb9-37"><a href="#cb9-37"></a>  g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb9-38"><a href="#cb9-38"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb9-39"><a href="#cb9-39"></a>  label <span class="op">=</span> gtk_label_new <span class="op">(</span>text<span class="op">);</span></span>
<span id="cb9-40"><a href="#cb9-40"></a>  g_free <span class="op">(</span>text<span class="op">);</span></span>
<span id="cb9-41"><a href="#cb9-41"></a>  gtk_notebook_set_tab_label <span class="op">(</span>GTK_NOTEBOOK <span class="op">(</span>nb<span class="op">),</span> scr<span class="op">,</span> label<span class="op">);</span></span>
<span id="cb9-42"><a href="#cb9-42"></a><span class="op">}</span></span></code></pre></div>
<h4 id="save_activated">save_activated</h4>
<p>The callback function <code>save_activated</code> is an activate
signal handler on “save” action.</p>
<div class="sourceCode" id="cb10"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb10-2"><a href="#cb10-2"></a>save_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb10-3"><a href="#cb10-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb10-4"><a href="#cb10-4"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb10-5"><a href="#cb10-5"></a></span>
<span id="cb10-6"><a href="#cb10-6"></a>  tfe_text_view_save <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb10-7"><a href="#cb10-7"></a><span class="op">}</span></span></code></pre></div>
<p>This function gets the current TfeTextView instance with the function
<code>get_current_textview</code>. And it just calls
<code>tfe_text_view_save</code>.</p>
<div class="sourceCode" id="cb11"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1"></a><span class="dt">static</span> TfeTextView <span class="op">*</span></span>
<span id="cb11-2"><a href="#cb11-2"></a>get_current_textview <span class="op">(</span>GtkNotebook <span class="op">*</span>nb<span class="op">)</span> <span class="op">{</span></span>
<span id="cb11-3"><a href="#cb11-3"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb11-4"><a href="#cb11-4"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb11-5"><a href="#cb11-5"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb11-6"><a href="#cb11-6"></a></span>
<span id="cb11-7"><a href="#cb11-7"></a>  i <span class="op">=</span> gtk_notebook_get_current_page <span class="op">(</span>nb<span class="op">);</span></span>
<span id="cb11-8"><a href="#cb11-8"></a>  scr <span class="op">=</span> gtk_notebook_get_nth_page <span class="op">(</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb11-9"><a href="#cb11-9"></a>  tv <span class="op">=</span> gtk_scrolled_window_get_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">));</span></span>
<span id="cb11-10"><a href="#cb11-10"></a>  <span class="cf">return</span> TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb11-11"><a href="#cb11-11"></a><span class="op">}</span></span></code></pre></div>
<h4 id="close_activated">close_activated</h4>
<p>The callback function <code>close_activated</code> is an activate
signal handler on “close” action. It closes the current notebook
page.</p>
<div class="sourceCode" id="cb12"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb12-1"><a href="#cb12-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb12-2"><a href="#cb12-2"></a>close_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb12-3"><a href="#cb12-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb12-4"><a href="#cb12-4"></a>  TfeTextView <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb12-5"><a href="#cb12-5"></a>  GtkTextBuffer <span class="op">*</span>tb<span class="op">;</span></span>
<span id="cb12-6"><a href="#cb12-6"></a>  GtkWidget <span class="op">*</span>alert<span class="op">;</span></span>
<span id="cb12-7"><a href="#cb12-7"></a></span>
<span id="cb12-8"><a href="#cb12-8"></a>  tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb12-9"><a href="#cb12-9"></a>  tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb12-10"><a href="#cb12-10"></a>  <span class="cf">if</span> <span class="op">(!</span> gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span> <span class="co">/* is saved? */</span></span>
<span id="cb12-11"><a href="#cb12-11"></a>    notebook_page_close <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb12-12"><a href="#cb12-12"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb12-13"><a href="#cb12-13"></a>    win<span class="op">-&gt;</span>is_quit <span class="op">=</span> FALSE<span class="op">;</span></span>
<span id="cb12-14"><a href="#cb12-14"></a>    alert <span class="op">=</span> tfe_alert_new_with_data <span class="op">(</span><span class="st">&quot;Are you sure?&quot;</span><span class="op">,</span> <span class="st">&quot;Contents aren&#39;t saved yet.</span><span class="sc">\n</span><span class="st">Are you sure to close?&quot;</span><span class="op">,</span> <span class="st">&quot;Close&quot;</span><span class="op">);</span></span>
<span id="cb12-15"><a href="#cb12-15"></a>    gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb12-16"><a href="#cb12-16"></a>    g_signal_connect <span class="op">(</span>TFE_ALERT <span class="op">(</span>alert<span class="op">),</span> <span class="st">&quot;response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>alert_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb12-17"><a href="#cb12-17"></a>    gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">));</span></span>
<span id="cb12-18"><a href="#cb12-18"></a>  <span class="op">}</span></span>
<span id="cb12-19"><a href="#cb12-19"></a><span class="op">}</span></span></code></pre></div>
<p>If the text in the current page has been saved, it calls
<code>notebook_page_close</code> to close the page. Otherwise, it sets
<code>win-&gt;is_quit</code> to FALSE and show the alert dialog. The
“response” signal on the dialog is connected to the handler
<code>alert_response_cb</code>.</p>
<div class="sourceCode" id="cb13"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb13-1"><a href="#cb13-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb13-2"><a href="#cb13-2"></a>notebook_page_close <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">){</span></span>
<span id="cb13-3"><a href="#cb13-3"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb13-4"><a href="#cb13-4"></a></span>
<span id="cb13-5"><a href="#cb13-5"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_notebook_get_n_pages <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">)</span> <span class="op">==</span> <span class="dv">1</span><span class="op">)</span></span>
<span id="cb13-6"><a href="#cb13-6"></a>    gtk_window_destroy <span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb13-7"><a href="#cb13-7"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb13-8"><a href="#cb13-8"></a>    i <span class="op">=</span> gtk_notebook_get_current_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb13-9"><a href="#cb13-9"></a>    gtk_notebook_remove_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb13-10"><a href="#cb13-10"></a>  <span class="op">}</span></span>
<span id="cb13-11"><a href="#cb13-11"></a><span class="op">}</span></span></code></pre></div>
<p>If the notebook has only one page, it destroys the window and the
application quits. Otherwise, it removes the current page.</p>
<div class="sourceCode" id="cb14"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb14-1"><a href="#cb14-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb14-2"><a href="#cb14-2"></a>alert_response_cb <span class="op">(</span>TfeAlert <span class="op">*</span>alert<span class="op">,</span> <span class="dt">int</span> response_id<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb14-3"><a href="#cb14-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb14-4"><a href="#cb14-4"></a></span>
<span id="cb14-5"><a href="#cb14-5"></a>  <span class="cf">if</span> <span class="op">(</span>response_id <span class="op">==</span> TFE_ALERT_RESPONSE_ACCEPT<span class="op">)</span> <span class="op">{</span></span>
<span id="cb14-6"><a href="#cb14-6"></a>    <span class="cf">if</span> <span class="op">(</span>win<span class="op">-&gt;</span>is_quit<span class="op">)</span></span>
<span id="cb14-7"><a href="#cb14-7"></a>      gtk_window_destroy<span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb14-8"><a href="#cb14-8"></a>    <span class="cf">else</span></span>
<span id="cb14-9"><a href="#cb14-9"></a>      notebook_page_close <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb14-10"><a href="#cb14-10"></a>  <span class="op">}</span></span>
<span id="cb14-11"><a href="#cb14-11"></a><span class="op">}</span></span></code></pre></div>
<p>If the user clicked on the cacel button, it does nothing. If the user
clicked on the accept button, which is the same as close button, it
calls <code>notebook_page_close</code>. Note that
<code>win-&gt;is_quit</code> has been set to FALSE in the
<code>close_activated</code> function.</p>
<h4 id="new_activated">new_activated</h4>
<p>The callback function <code>new_activated</code> is an activate
signal handler on “new” action.</p>
<div class="sourceCode" id="cb15"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb15-1"><a href="#cb15-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb15-2"><a href="#cb15-2"></a>new_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb15-3"><a href="#cb15-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb15-4"><a href="#cb15-4"></a></span>
<span id="cb15-5"><a href="#cb15-5"></a>  tfe_window_notebook_page_new <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb15-6"><a href="#cb15-6"></a><span class="op">}</span></span></code></pre></div>
<p>It just calls <code>tfe_window_notebook_page_new</code>, which is a
public method of TfeWindow.</p>
<div class="sourceCode" id="cb16"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb16-1"><a href="#cb16-1"></a><span class="dt">void</span></span>
<span id="cb16-2"><a href="#cb16-2"></a>tfe_window_notebook_page_new <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb16-3"><a href="#cb16-3"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb16-4"><a href="#cb16-4"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb16-5"><a href="#cb16-5"></a></span>
<span id="cb16-6"><a href="#cb16-6"></a>  tv <span class="op">=</span> tfe_text_view_new <span class="op">();</span></span>
<span id="cb16-7"><a href="#cb16-7"></a>  filename <span class="op">=</span> get_untitled <span class="op">();</span></span>
<span id="cb16-8"><a href="#cb16-8"></a>  notebook_page_build <span class="op">(</span>win<span class="op">,</span> tv<span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb16-9"><a href="#cb16-9"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb16-10"><a href="#cb16-10"></a><span class="op">}</span></span></code></pre></div>
<p>This function creates a new TfeTextView instance, “Untitled” family
string and calls <code>notebook_page_build</code>.</p>
<h4 id="saveas_activated">saveas_activated</h4>
<p>The callback function <code>saveas_activated</code> is an activate
signal handler on “saveas” action.</p>
<div class="sourceCode" id="cb17"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb17-1"><a href="#cb17-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb17-2"><a href="#cb17-2"></a>saveas_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb17-3"><a href="#cb17-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb17-4"><a href="#cb17-4"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb17-5"><a href="#cb17-5"></a></span>
<span id="cb17-6"><a href="#cb17-6"></a>  tfe_text_view_saveas <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb17-7"><a href="#cb17-7"></a><span class="op">}</span></span></code></pre></div>
<p>This function gets the current page TfeTextView instance and calls
<code>tfe_text_view_saveas</code>.</p>
<h4 id="pref_activated">pref_activated</h4>
<p>The callback function <code>pref_activated</code> is an activate
signal handler on “pref” action.</p>
<div class="sourceCode" id="cb18"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb18-1"><a href="#cb18-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb18-2"><a href="#cb18-2"></a>pref_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb18-3"><a href="#cb18-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb18-4"><a href="#cb18-4"></a>  GtkWidget <span class="op">*</span>pref<span class="op">;</span></span>
<span id="cb18-5"><a href="#cb18-5"></a></span>
<span id="cb18-6"><a href="#cb18-6"></a>  pref <span class="op">=</span> tfe_pref_new <span class="op">();</span></span>
<span id="cb18-7"><a href="#cb18-7"></a>  gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>pref<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb18-8"><a href="#cb18-8"></a>  gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>pref<span class="op">));</span></span>
<span id="cb18-9"><a href="#cb18-9"></a><span class="op">}</span></span></code></pre></div>
<p>This function creates a TfePref instance, which is a dialog, and sets
the transient parent window to <code>win</code>. And it shows the
dialog.</p>
<h4 id="close_all_activated">close_all_activated</h4>
<p>The callback function <code>close_all_activated</code> is an activate
signal handler on “close_all” action.</p>
<div class="sourceCode" id="cb19"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb19-1"><a href="#cb19-1"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb19-2"><a href="#cb19-2"></a>close_all_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb19-3"><a href="#cb19-3"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb19-4"><a href="#cb19-4"></a></span>
<span id="cb19-5"><a href="#cb19-5"></a>  <span class="cf">if</span> <span class="op">(</span>close_request_cb <span class="op">(</span>win<span class="op">)</span> <span class="op">==</span> FALSE<span class="op">)</span></span>
<span id="cb19-6"><a href="#cb19-6"></a>    gtk_window_destroy <span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb19-7"><a href="#cb19-7"></a><span class="op">}</span></span></code></pre></div>
<p>It first calls the function <code>close_request_cb</code>. It is a
callback function for the “close-request” signal on the top window. It
returns FALSE if all the texts have been saved. Otherwise it returns
TRUE.</p>
<p>Therefore, function <code>close_all_activated</code> destroys the top
window if all the texts have been saved. Otherwise it does nothing. But,
the function <code>close_request_cb</code> shows an alert dialog and if
the user clicks on the accept button, the window will be destroyed.</p>
<h3 id="window-close-request-signal">Window “close-request” signal</h3>
<p>GtkWindow has a “close-request” signal and it is emitted when the
close button, which is x-shaped button at the top right corner, is
clicked on. And the user handler is called before the default handler.
If the user handler returns TRUE, the rest of the close process is
skipped. If it returns FALSE, the rest will go on and the window will be
destroyed.</p>
<div class="sourceCode" id="cb20"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb20-1"><a href="#cb20-1"></a><span class="dt">static</span> gboolean</span>
<span id="cb20-2"><a href="#cb20-2"></a>close_request_cb <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb20-3"><a href="#cb20-3"></a>  TfeAlert <span class="op">*</span>alert<span class="op">;</span></span>
<span id="cb20-4"><a href="#cb20-4"></a></span>
<span id="cb20-5"><a href="#cb20-5"></a>  <span class="cf">if</span> <span class="op">(</span>is_saved_all <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">))</span></span>
<span id="cb20-6"><a href="#cb20-6"></a>    <span class="cf">return</span> FALSE<span class="op">;</span></span>
<span id="cb20-7"><a href="#cb20-7"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb20-8"><a href="#cb20-8"></a>    win<span class="op">-&gt;</span>is_quit <span class="op">=</span> TRUE<span class="op">;</span></span>
<span id="cb20-9"><a href="#cb20-9"></a>    alert <span class="op">=</span> TFE_ALERT <span class="op">(</span>tfe_alert_new_with_data <span class="op">(</span><span class="st">&quot;Are you sure?&quot;</span><span class="op">,</span> <span class="st">&quot;Contents aren&#39;t saved yet.</span><span class="sc">\n</span><span class="st">Are you sure to quit?&quot;</span><span class="op">,</span> <span class="st">&quot;Quit&quot;</span><span class="op">));</span></span>
<span id="cb20-10"><a href="#cb20-10"></a>    gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb20-11"><a href="#cb20-11"></a>    g_signal_connect <span class="op">(</span>TFE_ALERT <span class="op">(</span>alert<span class="op">),</span> <span class="st">&quot;response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>alert_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb20-12"><a href="#cb20-12"></a>    gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">));</span></span>
<span id="cb20-13"><a href="#cb20-13"></a>    <span class="cf">return</span> TRUE<span class="op">;</span></span>
<span id="cb20-14"><a href="#cb20-14"></a>  <span class="op">}</span></span>
<span id="cb20-15"><a href="#cb20-15"></a><span class="op">}</span></span></code></pre></div>
<p>First, it calls <code>is_saved_all</code> and checks if the texts
have been saved. If so, it returns FALSE and the close process
continues. Otherwise, it sets <code>win-&gt;is_quit</code> to TRUE and
shows an alert dialog. When the user clicks on the accept or cancel
button, the dialog disappears and “response” signal is emitted. Then,
the handler <code>alert_response_cb</code> is called. It destroys the
top window if the user clicked on the accept button since
<code>win-&gt;is_quit</code> is TRUE. Otherwise it does nothing.</p>
<div class="sourceCode" id="cb21"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb21-1"><a href="#cb21-1"></a><span class="dt">static</span> gboolean</span>
<span id="cb21-2"><a href="#cb21-2"></a>is_saved_all <span class="op">(</span>GtkNotebook <span class="op">*</span>nb<span class="op">)</span> <span class="op">{</span></span>
<span id="cb21-3"><a href="#cb21-3"></a>  <span class="dt">int</span> i<span class="op">,</span> n<span class="op">;</span></span>
<span id="cb21-4"><a href="#cb21-4"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb21-5"><a href="#cb21-5"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb21-6"><a href="#cb21-6"></a>  GtkTextBuffer <span class="op">*</span>tb<span class="op">;</span></span>
<span id="cb21-7"><a href="#cb21-7"></a></span>
<span id="cb21-8"><a href="#cb21-8"></a>  n <span class="op">=</span> gtk_notebook_get_n_pages <span class="op">(</span>nb<span class="op">);</span></span>
<span id="cb21-9"><a href="#cb21-9"></a>  <span class="cf">for</span> <span class="op">(</span>i <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> i <span class="op">&lt;</span> n<span class="op">;</span> <span class="op">++</span>i<span class="op">)</span> <span class="op">{</span></span>
<span id="cb21-10"><a href="#cb21-10"></a>    scr <span class="op">=</span> gtk_notebook_get_nth_page <span class="op">(</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb21-11"><a href="#cb21-11"></a>    tv <span class="op">=</span> gtk_scrolled_window_get_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">));</span></span>
<span id="cb21-12"><a href="#cb21-12"></a>    tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb21-13"><a href="#cb21-13"></a>    <span class="cf">if</span> <span class="op">(</span>gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span></span>
<span id="cb21-14"><a href="#cb21-14"></a>      <span class="cf">return</span> FALSE<span class="op">;</span></span>
<span id="cb21-15"><a href="#cb21-15"></a>  <span class="op">}</span></span>
<span id="cb21-16"><a href="#cb21-16"></a>  <span class="cf">return</span> TRUE<span class="op">;</span></span>
<span id="cb21-17"><a href="#cb21-17"></a><span class="op">}</span></span></code></pre></div>
<h3 id="public-functions">Public functions</h3>
<p>There are three public functions.</p>
<ul>
<li><code>void tfe_window_notebook_page_new (TfeWindow *win)</code></li>
<li><code>void tfe_window_notebook_page_new_with_files (TfeWindow *win, GFile **files, int n_files)</code></li>
<li><code>GtkWidget *tfe_window_new (GtkApplication *app)</code></li>
</ul>
<p>The first function is called when the application emits the
“activate” signal. The second is for “open” signal. It is given three
arguments and they are owned by the caller.</p>
<div class="sourceCode" id="cb22"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb22-1"><a href="#cb22-1"></a><span class="dt">void</span></span>
<span id="cb22-2"><a href="#cb22-2"></a>tfe_window_notebook_page_new_with_files <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">,</span> GFile <span class="op">**</span>files<span class="op">,</span> <span class="dt">int</span> n_files<span class="op">)</span> <span class="op">{</span></span>
<span id="cb22-3"><a href="#cb22-3"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb22-4"><a href="#cb22-4"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb22-5"><a href="#cb22-5"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb22-6"><a href="#cb22-6"></a></span>
<span id="cb22-7"><a href="#cb22-7"></a>  <span class="cf">for</span> <span class="op">(</span>i <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> i <span class="op">&lt;</span> n_files<span class="op">;</span> i<span class="op">++)</span></span>
<span id="cb22-8"><a href="#cb22-8"></a>    <span class="cf">if</span> <span class="op">((</span>tv <span class="op">=</span> tfe_text_view_new_with_file <span class="op">(*(</span>files<span class="op">+</span>i<span class="op">)))</span> <span class="op">!=</span> NULL<span class="op">)</span> <span class="op">{</span></span>
<span id="cb22-9"><a href="#cb22-9"></a>      filename <span class="op">=</span> g_file_get_basename <span class="op">(*(</span>files<span class="op">+</span>i<span class="op">));</span></span>
<span id="cb22-10"><a href="#cb22-10"></a>      notebook_page_build <span class="op">(</span>win<span class="op">,</span> tv<span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb22-11"><a href="#cb22-11"></a>      g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb22-12"><a href="#cb22-12"></a>    <span class="op">}</span></span>
<span id="cb22-13"><a href="#cb22-13"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_notebook_get_n_pages <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">)</span> <span class="op">==</span> <span class="dv">0</span><span class="op">)</span></span>
<span id="cb22-14"><a href="#cb22-14"></a>    tfe_window_notebook_page_new <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb22-15"><a href="#cb22-15"></a><span class="op">}</span></span></code></pre></div>
<p>This function has a loop for the array <code>files</code>. It creates
TfeTextView instance with the text from each file. And build a page with
it.</p>
<p>If an error happens and no page is created, it creates a new empty
page.</p>
<h3 id="full-codes-of-tfewindow.c">Full codes of tfewindow.c</h3>
<p>The following is the full source codes of
<code>tfewindow.c</code>.</p>
<div class="sourceCode" id="cb23"><pre
class="sourceCode numberSource C numberLines"><code class="sourceCode c"><span id="cb23-1"><a href="#cb23-1"></a><span class="pp">#include </span><span class="im">&lt;gtk/gtk.h&gt;</span></span>
<span id="cb23-2"><a href="#cb23-2"></a><span class="pp">#include </span><span class="im">&quot;tfewindow.h&quot;</span></span>
<span id="cb23-3"><a href="#cb23-3"></a><span class="pp">#include </span><span class="im">&quot;tfepref.h&quot;</span></span>
<span id="cb23-4"><a href="#cb23-4"></a><span class="pp">#include </span><span class="im">&quot;tfealert.h&quot;</span></span>
<span id="cb23-5"><a href="#cb23-5"></a><span class="pp">#include </span><span class="im">&quot;../tfetextview/tfetextview.h&quot;</span></span>
<span id="cb23-6"><a href="#cb23-6"></a></span>
<span id="cb23-7"><a href="#cb23-7"></a><span class="kw">struct</span> _TfeWindow <span class="op">{</span></span>
<span id="cb23-8"><a href="#cb23-8"></a>  GtkApplicationWindow parent<span class="op">;</span></span>
<span id="cb23-9"><a href="#cb23-9"></a>  GtkMenuButton <span class="op">*</span>btnm<span class="op">;</span></span>
<span id="cb23-10"><a href="#cb23-10"></a>  GtkNotebook <span class="op">*</span>nb<span class="op">;</span></span>
<span id="cb23-11"><a href="#cb23-11"></a>  gboolean is_quit<span class="op">;</span></span>
<span id="cb23-12"><a href="#cb23-12"></a><span class="op">};</span></span>
<span id="cb23-13"><a href="#cb23-13"></a></span>
<span id="cb23-14"><a href="#cb23-14"></a>G_DEFINE_FINAL_TYPE <span class="op">(</span>TfeWindow<span class="op">,</span> tfe_window<span class="op">,</span> GTK_TYPE_APPLICATION_WINDOW<span class="op">);</span></span>
<span id="cb23-15"><a href="#cb23-15"></a></span>
<span id="cb23-16"><a href="#cb23-16"></a><span class="co">/* Low level functions */</span></span>
<span id="cb23-17"><a href="#cb23-17"></a></span>
<span id="cb23-18"><a href="#cb23-18"></a><span class="co">/* Create a new untitled string */</span></span>
<span id="cb23-19"><a href="#cb23-19"></a><span class="co">/* The returned string should be freed with g_free() when no longer needed. */</span></span>
<span id="cb23-20"><a href="#cb23-20"></a><span class="dt">static</span> <span class="dt">char</span><span class="op">*</span></span>
<span id="cb23-21"><a href="#cb23-21"></a>get_untitled <span class="op">()</span> <span class="op">{</span></span>
<span id="cb23-22"><a href="#cb23-22"></a>  <span class="dt">static</span> <span class="dt">int</span> c <span class="op">=</span> <span class="op">-</span><span class="dv">1</span><span class="op">;</span></span>
<span id="cb23-23"><a href="#cb23-23"></a>  <span class="cf">if</span> <span class="op">(++</span>c <span class="op">==</span> <span class="dv">0</span><span class="op">)</span> </span>
<span id="cb23-24"><a href="#cb23-24"></a>    <span class="cf">return</span> g_strdup_printf<span class="op">(</span><span class="st">&quot;Untitled&quot;</span><span class="op">);</span></span>
<span id="cb23-25"><a href="#cb23-25"></a>  <span class="cf">else</span></span>
<span id="cb23-26"><a href="#cb23-26"></a>    <span class="cf">return</span> g_strdup_printf <span class="op">(</span><span class="st">&quot;Untitled</span><span class="sc">%u</span><span class="st">&quot;</span><span class="op">,</span> c<span class="op">);</span></span>
<span id="cb23-27"><a href="#cb23-27"></a><span class="op">}</span></span>
<span id="cb23-28"><a href="#cb23-28"></a></span>
<span id="cb23-29"><a href="#cb23-29"></a><span class="co">/* The returned object is owned by the scrolled window. */</span></span>
<span id="cb23-30"><a href="#cb23-30"></a><span class="co">/* The caller won&#39;t get the ownership and mustn&#39;t release it. */</span></span>
<span id="cb23-31"><a href="#cb23-31"></a><span class="dt">static</span> TfeTextView <span class="op">*</span></span>
<span id="cb23-32"><a href="#cb23-32"></a>get_current_textview <span class="op">(</span>GtkNotebook <span class="op">*</span>nb<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-33"><a href="#cb23-33"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb23-34"><a href="#cb23-34"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb23-35"><a href="#cb23-35"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb23-36"><a href="#cb23-36"></a></span>
<span id="cb23-37"><a href="#cb23-37"></a>  i <span class="op">=</span> gtk_notebook_get_current_page <span class="op">(</span>nb<span class="op">);</span></span>
<span id="cb23-38"><a href="#cb23-38"></a>  scr <span class="op">=</span> gtk_notebook_get_nth_page <span class="op">(</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb23-39"><a href="#cb23-39"></a>  tv <span class="op">=</span> gtk_scrolled_window_get_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">));</span></span>
<span id="cb23-40"><a href="#cb23-40"></a>  <span class="cf">return</span> TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-41"><a href="#cb23-41"></a><span class="op">}</span></span>
<span id="cb23-42"><a href="#cb23-42"></a></span>
<span id="cb23-43"><a href="#cb23-43"></a><span class="co">/* This call back is called when a TfeTextView instance emits a &quot;change-file&quot; signal. */</span></span>
<span id="cb23-44"><a href="#cb23-44"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-45"><a href="#cb23-45"></a>file_changed_cb <span class="op">(</span>TfeTextView <span class="op">*</span>tv<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-46"><a href="#cb23-46"></a>  GtkNotebook <span class="op">*</span>nb <span class="op">=</span>  GTK_NOTEBOOK <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-47"><a href="#cb23-47"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb23-48"><a href="#cb23-48"></a>  GtkWidget <span class="op">*</span>label<span class="op">;</span></span>
<span id="cb23-49"><a href="#cb23-49"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb23-50"><a href="#cb23-50"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb23-51"><a href="#cb23-51"></a></span>
<span id="cb23-52"><a href="#cb23-52"></a>  file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-53"><a href="#cb23-53"></a>  scr <span class="op">=</span> gtk_widget_get_parent <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-54"><a href="#cb23-54"></a>  <span class="cf">if</span> <span class="op">(</span>G_IS_FILE <span class="op">(</span>file<span class="op">))</span> <span class="op">{</span></span>
<span id="cb23-55"><a href="#cb23-55"></a>    filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-56"><a href="#cb23-56"></a>    g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-57"><a href="#cb23-57"></a>  <span class="op">}</span> <span class="cf">else</span></span>
<span id="cb23-58"><a href="#cb23-58"></a>    filename <span class="op">=</span> get_untitled <span class="op">();</span></span>
<span id="cb23-59"><a href="#cb23-59"></a>  label <span class="op">=</span> gtk_label_new <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-60"><a href="#cb23-60"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-61"><a href="#cb23-61"></a>  gtk_notebook_set_tab_label <span class="op">(</span>GTK_NOTEBOOK <span class="op">(</span>nb<span class="op">),</span> scr<span class="op">,</span> label<span class="op">);</span></span>
<span id="cb23-62"><a href="#cb23-62"></a><span class="op">}</span></span>
<span id="cb23-63"><a href="#cb23-63"></a></span>
<span id="cb23-64"><a href="#cb23-64"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-65"><a href="#cb23-65"></a>modified_changed_cb <span class="op">(</span>GtkTextBuffer <span class="op">*</span>tb<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-66"><a href="#cb23-66"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> TFE_TEXT_VIEW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-67"><a href="#cb23-67"></a>  GtkWidget <span class="op">*</span>scr <span class="op">=</span> gtk_widget_get_parent <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-68"><a href="#cb23-68"></a>  GtkWidget <span class="op">*</span>nb <span class="op">=</span>  gtk_widget_get_ancestor <span class="op">(</span>GTK_WIDGET <span class="op">(</span>tv<span class="op">),</span> GTK_TYPE_NOTEBOOK<span class="op">);</span></span>
<span id="cb23-69"><a href="#cb23-69"></a>  GtkWidget <span class="op">*</span>label<span class="op">;</span></span>
<span id="cb23-70"><a href="#cb23-70"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb23-71"><a href="#cb23-71"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb23-72"><a href="#cb23-72"></a>  <span class="dt">char</span> <span class="op">*</span>text<span class="op">;</span></span>
<span id="cb23-73"><a href="#cb23-73"></a></span>
<span id="cb23-74"><a href="#cb23-74"></a>  file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-75"><a href="#cb23-75"></a>  filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-76"><a href="#cb23-76"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span></span>
<span id="cb23-77"><a href="#cb23-77"></a>    text <span class="op">=</span> g_strdup_printf <span class="op">(</span><span class="st">&quot;*</span><span class="sc">%s</span><span class="st">&quot;</span><span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb23-78"><a href="#cb23-78"></a>  <span class="cf">else</span></span>
<span id="cb23-79"><a href="#cb23-79"></a>    text <span class="op">=</span> g_strdup <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-80"><a href="#cb23-80"></a>  g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-81"><a href="#cb23-81"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-82"><a href="#cb23-82"></a>  label <span class="op">=</span> gtk_label_new <span class="op">(</span>text<span class="op">);</span></span>
<span id="cb23-83"><a href="#cb23-83"></a>  g_free <span class="op">(</span>text<span class="op">);</span></span>
<span id="cb23-84"><a href="#cb23-84"></a>  gtk_notebook_set_tab_label <span class="op">(</span>GTK_NOTEBOOK <span class="op">(</span>nb<span class="op">),</span> scr<span class="op">,</span> label<span class="op">);</span></span>
<span id="cb23-85"><a href="#cb23-85"></a><span class="op">}</span></span>
<span id="cb23-86"><a href="#cb23-86"></a></span>
<span id="cb23-87"><a href="#cb23-87"></a><span class="dt">static</span> gboolean</span>
<span id="cb23-88"><a href="#cb23-88"></a>is_saved_all <span class="op">(</span>GtkNotebook <span class="op">*</span>nb<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-89"><a href="#cb23-89"></a>  <span class="dt">int</span> i<span class="op">,</span> n<span class="op">;</span></span>
<span id="cb23-90"><a href="#cb23-90"></a>  GtkWidget <span class="op">*</span>scr<span class="op">;</span></span>
<span id="cb23-91"><a href="#cb23-91"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb23-92"><a href="#cb23-92"></a>  GtkTextBuffer <span class="op">*</span>tb<span class="op">;</span></span>
<span id="cb23-93"><a href="#cb23-93"></a></span>
<span id="cb23-94"><a href="#cb23-94"></a>  n <span class="op">=</span> gtk_notebook_get_n_pages <span class="op">(</span>nb<span class="op">);</span></span>
<span id="cb23-95"><a href="#cb23-95"></a>  <span class="cf">for</span> <span class="op">(</span>i <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> i <span class="op">&lt;</span> n<span class="op">;</span> <span class="op">++</span>i<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-96"><a href="#cb23-96"></a>    scr <span class="op">=</span> gtk_notebook_get_nth_page <span class="op">(</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb23-97"><a href="#cb23-97"></a>    tv <span class="op">=</span> gtk_scrolled_window_get_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">));</span></span>
<span id="cb23-98"><a href="#cb23-98"></a>    tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-99"><a href="#cb23-99"></a>    <span class="cf">if</span> <span class="op">(</span>gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span></span>
<span id="cb23-100"><a href="#cb23-100"></a>      <span class="cf">return</span> FALSE<span class="op">;</span></span>
<span id="cb23-101"><a href="#cb23-101"></a>  <span class="op">}</span></span>
<span id="cb23-102"><a href="#cb23-102"></a>  <span class="cf">return</span> TRUE<span class="op">;</span></span>
<span id="cb23-103"><a href="#cb23-103"></a><span class="op">}</span></span>
<span id="cb23-104"><a href="#cb23-104"></a></span>
<span id="cb23-105"><a href="#cb23-105"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-106"><a href="#cb23-106"></a>notebook_page_close <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">){</span></span>
<span id="cb23-107"><a href="#cb23-107"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb23-108"><a href="#cb23-108"></a></span>
<span id="cb23-109"><a href="#cb23-109"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_notebook_get_n_pages <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">)</span> <span class="op">==</span> <span class="dv">1</span><span class="op">)</span></span>
<span id="cb23-110"><a href="#cb23-110"></a>    gtk_window_destroy <span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-111"><a href="#cb23-111"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb23-112"><a href="#cb23-112"></a>    i <span class="op">=</span> gtk_notebook_get_current_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb23-113"><a href="#cb23-113"></a>    gtk_notebook_remove_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb23-114"><a href="#cb23-114"></a>  <span class="op">}</span></span>
<span id="cb23-115"><a href="#cb23-115"></a><span class="op">}</span></span>
<span id="cb23-116"><a href="#cb23-116"></a></span>
<span id="cb23-117"><a href="#cb23-117"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-118"><a href="#cb23-118"></a>notebook_page_build <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">,</span> GtkWidget <span class="op">*</span>tv<span class="op">,</span> <span class="dt">char</span> <span class="op">*</span>filename<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-119"><a href="#cb23-119"></a>  <span class="co">// The arguments win, tb and filename are owned by the caller.</span></span>
<span id="cb23-120"><a href="#cb23-120"></a>  <span class="co">// If tv has a floating reference, it is consumed by the function.</span></span>
<span id="cb23-121"><a href="#cb23-121"></a>  GtkWidget <span class="op">*</span>scr <span class="op">=</span> gtk_scrolled_window_new <span class="op">();</span></span>
<span id="cb23-122"><a href="#cb23-122"></a>  GtkTextBuffer <span class="op">*</span>tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-123"><a href="#cb23-123"></a>  GtkNotebookPage <span class="op">*</span>nbp<span class="op">;</span></span>
<span id="cb23-124"><a href="#cb23-124"></a>  GtkWidget <span class="op">*</span>lab<span class="op">;</span></span>
<span id="cb23-125"><a href="#cb23-125"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb23-126"><a href="#cb23-126"></a></span>
<span id="cb23-127"><a href="#cb23-127"></a>  gtk_text_view_set_wrap_mode <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> GTK_WRAP_WORD_CHAR<span class="op">);</span></span>
<span id="cb23-128"><a href="#cb23-128"></a>  gtk_scrolled_window_set_child <span class="op">(</span>GTK_SCROLLED_WINDOW <span class="op">(</span>scr<span class="op">),</span> tv<span class="op">);</span></span>
<span id="cb23-129"><a href="#cb23-129"></a>  lab <span class="op">=</span> gtk_label_new <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-130"><a href="#cb23-130"></a>  i <span class="op">=</span> gtk_notebook_append_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> scr<span class="op">,</span> lab<span class="op">);</span></span>
<span id="cb23-131"><a href="#cb23-131"></a>  nbp <span class="op">=</span> gtk_notebook_get_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> scr<span class="op">);</span></span>
<span id="cb23-132"><a href="#cb23-132"></a>  g_object_set <span class="op">(</span>nbp<span class="op">,</span> <span class="st">&quot;tab-expand&quot;</span><span class="op">,</span> TRUE<span class="op">,</span> NULL<span class="op">);</span></span>
<span id="cb23-133"><a href="#cb23-133"></a>  gtk_notebook_set_current_page <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">,</span> i<span class="op">);</span></span>
<span id="cb23-134"><a href="#cb23-134"></a>  g_signal_connect <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> <span class="st">&quot;change-file&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>file_changed_cb<span class="op">),</span> win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb23-135"><a href="#cb23-135"></a>  g_signal_connect <span class="op">(</span>tb<span class="op">,</span> <span class="st">&quot;modified-changed&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>modified_changed_cb<span class="op">),</span> tv<span class="op">);</span></span>
<span id="cb23-136"><a href="#cb23-136"></a><span class="op">}</span></span>
<span id="cb23-137"><a href="#cb23-137"></a></span>
<span id="cb23-138"><a href="#cb23-138"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-139"><a href="#cb23-139"></a>open_response_cb <span class="op">(</span>TfeTextView <span class="op">*</span>tv<span class="op">,</span> <span class="dt">int</span> response<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-140"><a href="#cb23-140"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-141"><a href="#cb23-141"></a>  GFile <span class="op">*</span>file<span class="op">;</span></span>
<span id="cb23-142"><a href="#cb23-142"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb23-143"><a href="#cb23-143"></a></span>
<span id="cb23-144"><a href="#cb23-144"></a>  <span class="cf">if</span> <span class="op">(</span>response <span class="op">!=</span> TFE_OPEN_RESPONSE_SUCCESS<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-145"><a href="#cb23-145"></a>    g_object_ref_sink <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-146"><a href="#cb23-146"></a>    g_object_unref <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-147"><a href="#cb23-147"></a>  <span class="op">}</span><span class="cf">else</span> <span class="cf">if</span> <span class="op">(!</span> G_IS_FILE <span class="op">(</span>file <span class="op">=</span> tfe_text_view_get_file <span class="op">(</span>tv<span class="op">)))</span> <span class="op">{</span></span>
<span id="cb23-148"><a href="#cb23-148"></a>    g_object_ref_sink <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-149"><a href="#cb23-149"></a>    g_object_unref <span class="op">(</span>tv<span class="op">);</span></span>
<span id="cb23-150"><a href="#cb23-150"></a>  <span class="op">}</span><span class="cf">else</span> <span class="op">{</span></span>
<span id="cb23-151"><a href="#cb23-151"></a>    filename <span class="op">=</span> g_file_get_basename <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-152"><a href="#cb23-152"></a>    g_object_unref <span class="op">(</span>file<span class="op">);</span></span>
<span id="cb23-153"><a href="#cb23-153"></a>    notebook_page_build <span class="op">(</span>win<span class="op">,</span> GTK_WIDGET <span class="op">(</span>tv<span class="op">),</span> filename<span class="op">);</span></span>
<span id="cb23-154"><a href="#cb23-154"></a>    g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-155"><a href="#cb23-155"></a>  <span class="op">}</span></span>
<span id="cb23-156"><a href="#cb23-156"></a><span class="op">}</span></span>
<span id="cb23-157"><a href="#cb23-157"></a></span>
<span id="cb23-158"><a href="#cb23-158"></a><span class="co">/* alert response signal handler */</span></span>
<span id="cb23-159"><a href="#cb23-159"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-160"><a href="#cb23-160"></a>alert_response_cb <span class="op">(</span>TfeAlert <span class="op">*</span>alert<span class="op">,</span> <span class="dt">int</span> response_id<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-161"><a href="#cb23-161"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-162"><a href="#cb23-162"></a></span>
<span id="cb23-163"><a href="#cb23-163"></a>  <span class="cf">if</span> <span class="op">(</span>response_id <span class="op">==</span> TFE_ALERT_RESPONSE_ACCEPT<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-164"><a href="#cb23-164"></a>    <span class="cf">if</span> <span class="op">(</span>win<span class="op">-&gt;</span>is_quit<span class="op">)</span></span>
<span id="cb23-165"><a href="#cb23-165"></a>      gtk_window_destroy<span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-166"><a href="#cb23-166"></a>    <span class="cf">else</span></span>
<span id="cb23-167"><a href="#cb23-167"></a>      notebook_page_close <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb23-168"><a href="#cb23-168"></a>  <span class="op">}</span></span>
<span id="cb23-169"><a href="#cb23-169"></a><span class="op">}</span></span>
<span id="cb23-170"><a href="#cb23-170"></a></span>
<span id="cb23-171"><a href="#cb23-171"></a><span class="co">/* ----- Close request on the top window ----- */</span></span>
<span id="cb23-172"><a href="#cb23-172"></a><span class="co">/* ----- The signal is emitted when the close button is clicked. ----- */</span></span>
<span id="cb23-173"><a href="#cb23-173"></a><span class="dt">static</span> gboolean</span>
<span id="cb23-174"><a href="#cb23-174"></a>close_request_cb <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-175"><a href="#cb23-175"></a>  TfeAlert <span class="op">*</span>alert<span class="op">;</span></span>
<span id="cb23-176"><a href="#cb23-176"></a></span>
<span id="cb23-177"><a href="#cb23-177"></a>  <span class="cf">if</span> <span class="op">(</span>is_saved_all <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">))</span></span>
<span id="cb23-178"><a href="#cb23-178"></a>    <span class="cf">return</span> FALSE<span class="op">;</span></span>
<span id="cb23-179"><a href="#cb23-179"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb23-180"><a href="#cb23-180"></a>    win<span class="op">-&gt;</span>is_quit <span class="op">=</span> TRUE<span class="op">;</span></span>
<span id="cb23-181"><a href="#cb23-181"></a>    alert <span class="op">=</span> TFE_ALERT <span class="op">(</span>tfe_alert_new_with_data <span class="op">(</span><span class="st">&quot;Are you sure?&quot;</span><span class="op">,</span> <span class="st">&quot;Contents aren&#39;t saved yet.</span><span class="sc">\n</span><span class="st">Are you sure to quit?&quot;</span><span class="op">,</span> <span class="st">&quot;Quit&quot;</span><span class="op">));</span></span>
<span id="cb23-182"><a href="#cb23-182"></a>    gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-183"><a href="#cb23-183"></a>    g_signal_connect <span class="op">(</span>TFE_ALERT <span class="op">(</span>alert<span class="op">),</span> <span class="st">&quot;response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>alert_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb23-184"><a href="#cb23-184"></a>    gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">));</span></span>
<span id="cb23-185"><a href="#cb23-185"></a>    <span class="cf">return</span> TRUE<span class="op">;</span></span>
<span id="cb23-186"><a href="#cb23-186"></a>  <span class="op">}</span></span>
<span id="cb23-187"><a href="#cb23-187"></a><span class="op">}</span></span>
<span id="cb23-188"><a href="#cb23-188"></a></span>
<span id="cb23-189"><a href="#cb23-189"></a><span class="co">/* ----- action activated handlers ----- */</span></span>
<span id="cb23-190"><a href="#cb23-190"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-191"><a href="#cb23-191"></a>open_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-192"><a href="#cb23-192"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-193"><a href="#cb23-193"></a>  GtkWidget <span class="op">*</span>tv <span class="op">=</span> tfe_text_view_new <span class="op">();</span></span>
<span id="cb23-194"><a href="#cb23-194"></a></span>
<span id="cb23-195"><a href="#cb23-195"></a>  g_signal_connect <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> <span class="st">&quot;open-response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>open_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb23-196"><a href="#cb23-196"></a>  tfe_text_view_open <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-197"><a href="#cb23-197"></a><span class="op">}</span></span>
<span id="cb23-198"><a href="#cb23-198"></a></span>
<span id="cb23-199"><a href="#cb23-199"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-200"><a href="#cb23-200"></a>save_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-201"><a href="#cb23-201"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-202"><a href="#cb23-202"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb23-203"><a href="#cb23-203"></a></span>
<span id="cb23-204"><a href="#cb23-204"></a>  tfe_text_view_save <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-205"><a href="#cb23-205"></a><span class="op">}</span></span>
<span id="cb23-206"><a href="#cb23-206"></a></span>
<span id="cb23-207"><a href="#cb23-207"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-208"><a href="#cb23-208"></a>close_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-209"><a href="#cb23-209"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-210"><a href="#cb23-210"></a>  TfeTextView <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb23-211"><a href="#cb23-211"></a>  GtkTextBuffer <span class="op">*</span>tb<span class="op">;</span></span>
<span id="cb23-212"><a href="#cb23-212"></a>  GtkWidget <span class="op">*</span>alert<span class="op">;</span></span>
<span id="cb23-213"><a href="#cb23-213"></a></span>
<span id="cb23-214"><a href="#cb23-214"></a>  tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb23-215"><a href="#cb23-215"></a>  tb <span class="op">=</span> gtk_text_view_get_buffer <span class="op">(</span>GTK_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-216"><a href="#cb23-216"></a>  <span class="cf">if</span> <span class="op">(!</span> gtk_text_buffer_get_modified <span class="op">(</span>tb<span class="op">))</span> <span class="co">/* is saved? */</span></span>
<span id="cb23-217"><a href="#cb23-217"></a>    notebook_page_close <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb23-218"><a href="#cb23-218"></a>  <span class="cf">else</span> <span class="op">{</span></span>
<span id="cb23-219"><a href="#cb23-219"></a>    win<span class="op">-&gt;</span>is_quit <span class="op">=</span> FALSE<span class="op">;</span></span>
<span id="cb23-220"><a href="#cb23-220"></a>    alert <span class="op">=</span> tfe_alert_new_with_data <span class="op">(</span><span class="st">&quot;Are you sure?&quot;</span><span class="op">,</span> <span class="st">&quot;Contents aren&#39;t saved yet.</span><span class="sc">\n</span><span class="st">Are you sure to close?&quot;</span><span class="op">,</span> <span class="st">&quot;Close&quot;</span><span class="op">);</span></span>
<span id="cb23-221"><a href="#cb23-221"></a>    gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-222"><a href="#cb23-222"></a>    g_signal_connect <span class="op">(</span>TFE_ALERT <span class="op">(</span>alert<span class="op">),</span> <span class="st">&quot;response&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>alert_response_cb<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb23-223"><a href="#cb23-223"></a>    gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>alert<span class="op">));</span></span>
<span id="cb23-224"><a href="#cb23-224"></a>  <span class="op">}</span></span>
<span id="cb23-225"><a href="#cb23-225"></a><span class="op">}</span></span>
<span id="cb23-226"><a href="#cb23-226"></a></span>
<span id="cb23-227"><a href="#cb23-227"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-228"><a href="#cb23-228"></a>new_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-229"><a href="#cb23-229"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-230"><a href="#cb23-230"></a></span>
<span id="cb23-231"><a href="#cb23-231"></a>  tfe_window_notebook_page_new <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb23-232"><a href="#cb23-232"></a><span class="op">}</span></span>
<span id="cb23-233"><a href="#cb23-233"></a></span>
<span id="cb23-234"><a href="#cb23-234"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-235"><a href="#cb23-235"></a>saveas_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-236"><a href="#cb23-236"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-237"><a href="#cb23-237"></a>  TfeTextView <span class="op">*</span>tv <span class="op">=</span> get_current_textview <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">);</span></span>
<span id="cb23-238"><a href="#cb23-238"></a></span>
<span id="cb23-239"><a href="#cb23-239"></a>  tfe_text_view_saveas <span class="op">(</span>TFE_TEXT_VIEW <span class="op">(</span>tv<span class="op">));</span></span>
<span id="cb23-240"><a href="#cb23-240"></a><span class="op">}</span></span>
<span id="cb23-241"><a href="#cb23-241"></a></span>
<span id="cb23-242"><a href="#cb23-242"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-243"><a href="#cb23-243"></a>pref_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-244"><a href="#cb23-244"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-245"><a href="#cb23-245"></a>  GtkWidget <span class="op">*</span>pref<span class="op">;</span></span>
<span id="cb23-246"><a href="#cb23-246"></a></span>
<span id="cb23-247"><a href="#cb23-247"></a>  pref <span class="op">=</span> tfe_pref_new <span class="op">();</span></span>
<span id="cb23-248"><a href="#cb23-248"></a>  gtk_window_set_transient_for <span class="op">(</span>GTK_WINDOW <span class="op">(</span>pref<span class="op">),</span> GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-249"><a href="#cb23-249"></a>  gtk_window_present <span class="op">(</span>GTK_WINDOW <span class="op">(</span>pref<span class="op">));</span></span>
<span id="cb23-250"><a href="#cb23-250"></a><span class="op">}</span></span>
<span id="cb23-251"><a href="#cb23-251"></a></span>
<span id="cb23-252"><a href="#cb23-252"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-253"><a href="#cb23-253"></a>close_all_activated <span class="op">(</span>GSimpleAction <span class="op">*</span>action<span class="op">,</span> GVariant <span class="op">*</span>parameter<span class="op">,</span> gpointer user_data<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-254"><a href="#cb23-254"></a>  TfeWindow <span class="op">*</span>win <span class="op">=</span> TFE_WINDOW <span class="op">(</span>user_data<span class="op">);</span></span>
<span id="cb23-255"><a href="#cb23-255"></a></span>
<span id="cb23-256"><a href="#cb23-256"></a>  <span class="cf">if</span> <span class="op">(</span>close_request_cb <span class="op">(</span>win<span class="op">)</span> <span class="op">==</span> FALSE<span class="op">)</span></span>
<span id="cb23-257"><a href="#cb23-257"></a>    gtk_window_destroy <span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-258"><a href="#cb23-258"></a><span class="op">}</span></span>
<span id="cb23-259"><a href="#cb23-259"></a></span>
<span id="cb23-260"><a href="#cb23-260"></a><span class="co">/* --- public functions --- */</span></span>
<span id="cb23-261"><a href="#cb23-261"></a></span>
<span id="cb23-262"><a href="#cb23-262"></a><span class="dt">void</span></span>
<span id="cb23-263"><a href="#cb23-263"></a>tfe_window_notebook_page_new <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-264"><a href="#cb23-264"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb23-265"><a href="#cb23-265"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb23-266"><a href="#cb23-266"></a></span>
<span id="cb23-267"><a href="#cb23-267"></a>  tv <span class="op">=</span> tfe_text_view_new <span class="op">();</span></span>
<span id="cb23-268"><a href="#cb23-268"></a>  filename <span class="op">=</span> get_untitled <span class="op">();</span></span>
<span id="cb23-269"><a href="#cb23-269"></a>  notebook_page_build <span class="op">(</span>win<span class="op">,</span> tv<span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb23-270"><a href="#cb23-270"></a>  g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-271"><a href="#cb23-271"></a><span class="op">}</span></span>
<span id="cb23-272"><a href="#cb23-272"></a></span>
<span id="cb23-273"><a href="#cb23-273"></a><span class="dt">void</span></span>
<span id="cb23-274"><a href="#cb23-274"></a>tfe_window_notebook_page_new_with_files <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">,</span> GFile <span class="op">**</span>files<span class="op">,</span> <span class="dt">int</span> n_files<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-275"><a href="#cb23-275"></a>  <span class="dt">int</span> i<span class="op">;</span></span>
<span id="cb23-276"><a href="#cb23-276"></a>  GtkWidget <span class="op">*</span>tv<span class="op">;</span></span>
<span id="cb23-277"><a href="#cb23-277"></a>  <span class="dt">char</span> <span class="op">*</span>filename<span class="op">;</span></span>
<span id="cb23-278"><a href="#cb23-278"></a></span>
<span id="cb23-279"><a href="#cb23-279"></a>  <span class="cf">for</span> <span class="op">(</span>i <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> i <span class="op">&lt;</span> n_files<span class="op">;</span> i<span class="op">++)</span></span>
<span id="cb23-280"><a href="#cb23-280"></a>    <span class="cf">if</span> <span class="op">((</span>tv <span class="op">=</span> tfe_text_view_new_with_file <span class="op">(*(</span>files<span class="op">+</span>i<span class="op">)))</span> <span class="op">!=</span> NULL<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-281"><a href="#cb23-281"></a>      filename <span class="op">=</span> g_file_get_basename <span class="op">(*(</span>files<span class="op">+</span>i<span class="op">));</span></span>
<span id="cb23-282"><a href="#cb23-282"></a>      notebook_page_build <span class="op">(</span>win<span class="op">,</span> tv<span class="op">,</span> filename<span class="op">);</span></span>
<span id="cb23-283"><a href="#cb23-283"></a>      g_free <span class="op">(</span>filename<span class="op">);</span></span>
<span id="cb23-284"><a href="#cb23-284"></a>    <span class="op">}</span></span>
<span id="cb23-285"><a href="#cb23-285"></a>  <span class="cf">if</span> <span class="op">(</span>gtk_notebook_get_n_pages <span class="op">(</span>win<span class="op">-&gt;</span>nb<span class="op">)</span> <span class="op">==</span> <span class="dv">0</span><span class="op">)</span></span>
<span id="cb23-286"><a href="#cb23-286"></a>    tfe_window_notebook_page_new <span class="op">(</span>win<span class="op">);</span></span>
<span id="cb23-287"><a href="#cb23-287"></a><span class="op">}</span></span>
<span id="cb23-288"><a href="#cb23-288"></a></span>
<span id="cb23-289"><a href="#cb23-289"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-290"><a href="#cb23-290"></a>tfe_window_dispose <span class="op">(</span>GObject <span class="op">*</span>gobject<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-291"><a href="#cb23-291"></a>  gtk_widget_dispose_template <span class="op">(</span>GTK_WIDGET <span class="op">(</span>gobject<span class="op">),</span> TFE_TYPE_WINDOW<span class="op">);</span></span>
<span id="cb23-292"><a href="#cb23-292"></a>  G_OBJECT_CLASS <span class="op">(</span>tfe_window_parent_class<span class="op">)-&gt;</span>dispose <span class="op">(</span>gobject<span class="op">);</span></span>
<span id="cb23-293"><a href="#cb23-293"></a><span class="op">}</span></span>
<span id="cb23-294"><a href="#cb23-294"></a></span>
<span id="cb23-295"><a href="#cb23-295"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-296"><a href="#cb23-296"></a>tfe_window_init <span class="op">(</span>TfeWindow <span class="op">*</span>win<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-297"><a href="#cb23-297"></a>  GtkBuilder <span class="op">*</span>build<span class="op">;</span></span>
<span id="cb23-298"><a href="#cb23-298"></a>  GMenuModel <span class="op">*</span>menu<span class="op">;</span></span>
<span id="cb23-299"><a href="#cb23-299"></a></span>
<span id="cb23-300"><a href="#cb23-300"></a>  gtk_widget_init_template <span class="op">(</span>GTK_WIDGET <span class="op">(</span>win<span class="op">));</span></span>
<span id="cb23-301"><a href="#cb23-301"></a></span>
<span id="cb23-302"><a href="#cb23-302"></a>  build <span class="op">=</span> gtk_builder_new_from_resource <span class="op">(</span><span class="st">&quot;/com/github/ToshioCP/tfe/menu.ui&quot;</span><span class="op">);</span></span>
<span id="cb23-303"><a href="#cb23-303"></a>  menu <span class="op">=</span> G_MENU_MODEL <span class="op">(</span>gtk_builder_get_object <span class="op">(</span>build<span class="op">,</span> <span class="st">&quot;menu&quot;</span><span class="op">));</span></span>
<span id="cb23-304"><a href="#cb23-304"></a>  gtk_menu_button_set_menu_model <span class="op">(</span>win<span class="op">-&gt;</span>btnm<span class="op">,</span> menu<span class="op">);</span></span>
<span id="cb23-305"><a href="#cb23-305"></a>  g_object_unref<span class="op">(</span>build<span class="op">);</span></span>
<span id="cb23-306"><a href="#cb23-306"></a></span>
<span id="cb23-307"><a href="#cb23-307"></a><span class="co">/* ----- action ----- */</span></span>
<span id="cb23-308"><a href="#cb23-308"></a>  <span class="dt">const</span> GActionEntry win_entries<span class="op">[]</span> <span class="op">=</span> <span class="op">{</span></span>
<span id="cb23-309"><a href="#cb23-309"></a>    <span class="op">{</span> <span class="st">&quot;open&quot;</span><span class="op">,</span> open_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-310"><a href="#cb23-310"></a>    <span class="op">{</span> <span class="st">&quot;save&quot;</span><span class="op">,</span> save_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-311"><a href="#cb23-311"></a>    <span class="op">{</span> <span class="st">&quot;close&quot;</span><span class="op">,</span> close_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-312"><a href="#cb23-312"></a>    <span class="op">{</span> <span class="st">&quot;new&quot;</span><span class="op">,</span> new_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-313"><a href="#cb23-313"></a>    <span class="op">{</span> <span class="st">&quot;saveas&quot;</span><span class="op">,</span> saveas_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-314"><a href="#cb23-314"></a>    <span class="op">{</span> <span class="st">&quot;pref&quot;</span><span class="op">,</span> pref_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">},</span></span>
<span id="cb23-315"><a href="#cb23-315"></a>    <span class="op">{</span> <span class="st">&quot;close-all&quot;</span><span class="op">,</span> close_all_activated<span class="op">,</span> NULL<span class="op">,</span> NULL<span class="op">,</span> NULL <span class="op">}</span></span>
<span id="cb23-316"><a href="#cb23-316"></a>  <span class="op">};</span></span>
<span id="cb23-317"><a href="#cb23-317"></a>  g_action_map_add_action_entries <span class="op">(</span>G_ACTION_MAP <span class="op">(</span>win<span class="op">),</span> win_entries<span class="op">,</span> G_N_ELEMENTS <span class="op">(</span>win_entries<span class="op">),</span> win<span class="op">);</span></span>
<span id="cb23-318"><a href="#cb23-318"></a></span>
<span id="cb23-319"><a href="#cb23-319"></a>  g_signal_connect <span class="op">(</span>GTK_WINDOW <span class="op">(</span>win<span class="op">),</span> <span class="st">&quot;close-request&quot;</span><span class="op">,</span> G_CALLBACK <span class="op">(</span>close_request_cb<span class="op">),</span> NULL<span class="op">);</span></span>
<span id="cb23-320"><a href="#cb23-320"></a><span class="op">}</span></span>
<span id="cb23-321"><a href="#cb23-321"></a></span>
<span id="cb23-322"><a href="#cb23-322"></a><span class="dt">static</span> <span class="dt">void</span></span>
<span id="cb23-323"><a href="#cb23-323"></a>tfe_window_class_init <span class="op">(</span>TfeWindowClass <span class="op">*</span>class<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-324"><a href="#cb23-324"></a>  GObjectClass <span class="op">*</span>object_class <span class="op">=</span> G_OBJECT_CLASS <span class="op">(</span>class<span class="op">);</span></span>
<span id="cb23-325"><a href="#cb23-325"></a></span>
<span id="cb23-326"><a href="#cb23-326"></a>  object_class<span class="op">-&gt;</span>dispose <span class="op">=</span> tfe_window_dispose<span class="op">;</span></span>
<span id="cb23-327"><a href="#cb23-327"></a>  gtk_widget_class_set_template_from_resource <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> <span class="st">&quot;/com/github/ToshioCP/tfe/tfewindow.ui&quot;</span><span class="op">);</span></span>
<span id="cb23-328"><a href="#cb23-328"></a>  gtk_widget_class_bind_template_child <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> TfeWindow<span class="op">,</span> btnm<span class="op">);</span></span>
<span id="cb23-329"><a href="#cb23-329"></a>  gtk_widget_class_bind_template_child <span class="op">(</span>GTK_WIDGET_CLASS <span class="op">(</span>class<span class="op">),</span> TfeWindow<span class="op">,</span> nb<span class="op">);</span></span>
<span id="cb23-330"><a href="#cb23-330"></a><span class="op">}</span></span>
<span id="cb23-331"><a href="#cb23-331"></a></span>
<span id="cb23-332"><a href="#cb23-332"></a>GtkWidget <span class="op">*</span></span>
<span id="cb23-333"><a href="#cb23-333"></a>tfe_window_new <span class="op">(</span>GtkApplication <span class="op">*</span>app<span class="op">)</span> <span class="op">{</span></span>
<span id="cb23-334"><a href="#cb23-334"></a>  <span class="cf">return</span> GTK_WIDGET <span class="op">(</span>g_object_new <span class="op">(</span>TFE_TYPE_WINDOW<span class="op">,</span> <span class="st">&quot;application&quot;</span><span class="op">,</span> app<span class="op">,</span> NULL<span class="op">));</span></span>
<span id="cb23-335"><a href="#cb23-335"></a><span class="op">}</span></span></code></pre></div>
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