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Toshio Sekiya
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10 дек 2023, 11:39
10 дек 2023, 11:397b14d03
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<h1 id="tfetextview-api-reference">TfeTextView API reference</h1>
<h2 id="description">Description</h2>
<p>TfeTextView is a child object of GtkTextView. If its contents comes
from a file, it holds the pointer to the GFile. Otherwise, the pointer
is NULL.</p>
<h2 id="hierarchy">Hierarchy</h2>
<pre><code>GObject -- GInitiallyUnowned -- GtkWidget -- GtkTextView -- TfeTextView</code></pre>
<h2 id="ancestors">Ancestors</h2>
<ul>
<li>GtkTextView</li>
<li>GtkWidget</li>
<li>GInitiallyUnowned</li>
<li>GObject</li>
</ul>
<h2 id="constructors">Constructors</h2>
<ul>
<li>tfe_text_view_new ()</li>
<li>tfe_text_view_new_with_file ()</li>
</ul>
<h2 id="instance-methods">Instance methods</h2>
<ul>
<li>tfe_text_view_get_file ()</li>
<li>tfe_text_view_open ()</li>
<li>tfe_text_view_save ()</li>
<li>tfe_text_view_saveas ()</li>
</ul>
<h2 id="signals">Signals</h2>
<ul>
<li>Tfe.TextView::change-file</li>
<li>Tfe.TextView::open-response</li>
</ul>
<h2 id="api-for-constructors-instance-methods-and-signals">API for
constructors, instance methods and signals</h2>
<p><strong>constructors</strong></p>
<h3 id="tfe_text_view_new">tfe_text_view_new()</h3>
<pre><code>GtkWidget *
tfe_text_view_new (void);</code></pre>
<p>Creates a new TfeTextView instance and returns the pointer to it as
GtkWidget. If an error happens, it returns <code>NULL</code>.</p>
<p>Return value</p>
<ul>
<li>a new TfeTextView.</li>
</ul>
<h3 id="tfe_text_view_new_with_file">tfe_text_view_new_with_file()</h3>
<pre><code>GtkWidget *
tfe_text_view_new_with_file (GFile *file);</code></pre>
<p>Creates a new TfeTextView, reads the contents of the
<code>file</code> and set it to the GtkTextBuffer corresponds to the
newly created TfeTextView. Then returns the pointer to the TfeTextView
as GtkWidget. If an error happens, it returns <code>NULL</code>.</p>
<p>Parameters</p>
<ul>
<li>file: a GFile</li>
</ul>
<p>Return value</p>
<ul>
<li>a new TfeTextView.</li>
</ul>
<p><strong>Instance methods</strong></p>
<h3 id="tfe_text_view_get_file">tfe_text_view_get_file()</h3>
<pre><code>GFile *
tfe_text_view_get_file (TfeTextView *tv);</code></pre>
<p>Returns the copy of the GFile in the TfeTextView.</p>
<p>Parameters</p>
<ul>
<li>tv: a TfeTextView</li>
</ul>
<p>Return value</p>
<ul>
<li>the pointer to the GFile</li>
</ul>
<h3 id="tfe_text_view_open">tfe_text_view_open()</h3>
<pre><code>void
tfe_text_view_open (TfeTextView *tv, GtkWidget *win);</code></pre>
<p>Shows a file chooser dialog so that a user can choose a file to read.
Then, read the file and set the buffer with the contents. This function
doesn’t return the I/O status. Instead, the status is informed by
<code>open-response</code> signal. The caller needs to set a handler to
this signal in advance.</p>
<p>parameters</p>
<ul>
<li>tv: a TfeTextView</li>
<li>win: the top level window</li>
</ul>
<h3 id="tfe_text_view_save">tfe_text_view_save()</h3>
<pre><code>void
tfe_text_view_save (TfeTextView *tv);</code></pre>
<p>Saves the contents of the buffer to the file. If <code>tv</code>
holds a GFile, it is used. Otherwise, this function shows a file chooser
dialog so that the user can choose a file to save.</p>
<p>Parameters</p>
<ul>
<li>tv: a TfeTextView</li>
</ul>
<h3 id="tfe_text_view_saveas">tfe_text_view_saveas()</h3>
<pre><code>void
tfe_text_view_saveas (TfeTextView *tv);</code></pre>
<p>Saves the contents of the buffer to a file. This function shows file
chooser dialog so that a user can choose a file to save.</p>
<p>Parameters</p>
<ul>
<li>tv: a TfeTextView</li>
</ul>
<p><strong>Signals</strong></p>
<h3 id="change-file">change-file</h3>
<pre><code>void
user_function (TfeTextView *tv,
               gpointer user_data)</code></pre>
<p>Emitted when the GFile in the TfeTextView object is changed. The
signal is emitted when:</p>
<ul>
<li>a new file is opened and read</li>
<li>a user chooses a file with the file chooser dialog and save the
contents.</li>
</ul>
<h3 id="open-response">open-response</h3>
<pre><code>void
user_function (TfeTextView *tv,
               TfeTextViewOpenResponseType response-id,
               gpointer user_data)</code></pre>
<p>Emitted after the user calls <code>tfe_text_view_open</code>. This
signal informs the status of file I/O operation.</p>
<p><strong>Enumerations</strong></p>
<h3 id="tfetextviewopenresponsetype">TfeTextViewOpenResponseType</h3>
<p>Predefined values for the response id given by
<code>open-response</code> signal.</p>
<p>Members:</p>
<ul>
<li>TFE_OPEN_RESPONSE_SUCCESS: The file is successfully opened.</li>
<li>TFE_OPEN_RESPONSE_CANCEL: Reading file is canceled by the user.</li>
<li>TFE_OPEN_RESPONSE_ERROR: An error happened during the opening or
reading process.</li>
</ul>
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