FreeCAD

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/***************************************************************************
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 *   Copyright (c) 2013 Luke Parry <l.parry@warwick.ac.uk>                 *
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 *                                                                         *
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 *   This file is part of the FreeCAD CAx development system.              *
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 *                                                                         *
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 *   This library is free software; you can redistribute it and/or         *
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 *   modify it under the terms of the GNU Library General Public           *
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 *   License as published by the Free Software Foundation; either          *
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 *   version 2 of the License, or (at your option) any later version.      *
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 *                                                                         *
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 *   This library  is distributed in the hope that it will be useful,      *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU Library General Public License for more details.                  *
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 *                                                                         *
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 *   You should have received a copy of the GNU Library General Public     *
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 *   License along with this library; see the file COPYING.LIB. If not,    *
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
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 *                                                                         *
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 ***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# ifdef FC_OS_WIN32
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#  include <windows.h>
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# endif
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# include <QMenu>
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# include <QMessageBox>
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# include <QTextStream>
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#endif
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#include <App/DocumentObject.h>
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#include <Gui/Control.h>
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#include <Gui/MainWindow.h>
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#include <Gui/Selection.h>
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#include <Mod/TechDraw/App/DrawLeaderLine.h>
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#include <Mod/TechDraw/App/DrawProjGroupItem.h>
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#include <Mod/TechDraw/App/DrawViewDetail.h>
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#include <Mod/TechDraw/App/DrawViewSection.h>
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#include "TaskProjGroup.h"
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#include "ViewProviderProjGroup.h"
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using namespace TechDrawGui;
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PROPERTY_SOURCE(TechDrawGui::ViewProviderProjGroup, TechDrawGui::ViewProviderDrawingView)
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//**************************************************************************
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// Construction/Destruction
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ViewProviderProjGroup::ViewProviderProjGroup()
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{
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    sPixmap = "TechDraw_TreeProjGroup";
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}
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ViewProviderProjGroup::~ViewProviderProjGroup()
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{
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}
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void ViewProviderProjGroup::setupContextMenu(QMenu* menu, QObject* receiver, const char* member)
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{
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    Q_UNUSED(menu);
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    Q_UNUSED(receiver);
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    Q_UNUSED(member);
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}
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bool ViewProviderProjGroup::setEdit(int ModNum)
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{
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    Q_UNUSED(ModNum);
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    // When double-clicking on the item for this sketch the
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    // object unsets and sets its edit mode without closing
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    // the task panel
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    Gui::TaskView::TaskDialog *dlg = Gui::Control().activeDialog();
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    TaskDlgProjGroup *projDlg = qobject_cast<TaskDlgProjGroup *>(dlg);
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    if (projDlg && projDlg->getViewProvider() != this)
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        projDlg = nullptr; // another sketch left open its task panel
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    // clear the selection (convenience)
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    Gui::Selection().clearSelection();
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    // start the edit dialog
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    if (projDlg) {
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        projDlg->setCreateMode(false);
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        Gui::Control().showDialog(projDlg);
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    } else {
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        Gui::Control().showDialog(new TaskDlgProjGroup(getObject(), false));
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    }
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    return true;
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}
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bool ViewProviderProjGroup::doubleClicked()
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{
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    setEdit(0);
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    return true;
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}
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bool ViewProviderProjGroup::onDelete(const std::vector<std::string> &)
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{
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    // warn the user if the ProjGroup is not empty
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    QString bodyMessage;
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    QTextStream bodyMessageStream(&bodyMessage);
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    TechDraw::DrawProjGroupItem* Item = nullptr;
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    std::vector<std::string> ViewList;
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    // get the items in the group
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    auto objs = claimChildren();
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    // iterate over all item to check which ones have a section or detail view
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    for (auto ObjectIterator : objs) {
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        // get item
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        Item = static_cast<TechDraw::DrawProjGroupItem*>(ObjectIterator);
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        // get its section views
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        auto viewSection = Item->getSectionRefs();
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        // add names to a list
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        if (!viewSection.empty()) {
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            for (auto SecIterator : viewSection) {
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                ViewList.emplace_back(SecIterator->Label.getValue());
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            }
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        }
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        // get its detail views
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        auto viewDetail = Item->getDetailRefs();
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        if (!viewDetail.empty()) {
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            for (auto DetIterator : viewDetail) {
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                ViewList.emplace_back(DetIterator->Label.getValue());
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            }
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        }
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        // get its leader lines
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        auto viewLead = Item->getLeaders();
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        if (!viewLead.empty()) {
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            for (auto LeadIterator : viewLead) {
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                ViewList.emplace_back(LeadIterator->Label.getValue());
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            }
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        }
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    }
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    // if there are section or detail views we cannot delete because this would break them
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    if (!ViewList.empty()) {
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        bodyMessageStream << qApp->translate("Std_Delete",
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            "The group cannot be deleted because its items have the following\nsection or detail views, or leader lines that would get broken:");
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        bodyMessageStream << '\n';
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        for (const auto& ListIterator : ViewList)
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            bodyMessageStream << '\n' << QString::fromUtf8(ListIterator.c_str());
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        QMessageBox::warning(Gui::getMainWindow(),
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            qApp->translate("Std_Delete", "Object dependencies"), bodyMessage,
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            QMessageBox::Ok);
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        return false;
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    }
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    if (!objs.empty())
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    {
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        // generate dialog
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        bodyMessageStream << qApp->translate("Std_Delete",
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            "The projection group is not empty, therefore\nthe following referencing objects might be lost:");
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        bodyMessageStream << '\n';
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        for (auto ObjIterator : objs)
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            bodyMessageStream << '\n' << QString::fromUtf8(ObjIterator->Label.getValue());
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        bodyMessageStream << "\n\n" << QObject::tr("Are you sure you want to continue?");
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        // show and evaluate dialog
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        int DialogResult = QMessageBox::warning(Gui::getMainWindow(),
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            qApp->translate("Std_Delete", "Object dependencies"), bodyMessage,
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            QMessageBox::Yes, QMessageBox::No);
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        if (DialogResult == QMessageBox::Yes)
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            return true;
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        else
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            return false;
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    }
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    else
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        return true;
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}
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bool ViewProviderProjGroup::canDelete(App::DocumentObject *obj) const
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{
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    // deletions of views from a ProjGroup don't necessarily destroy anything
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    // thus we can pass this action
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    // we can warn the user if necessary in the object's ViewProvider in the onDelete() function
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    Q_UNUSED(obj)
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    return true;
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}
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std::vector<App::DocumentObject*> ViewProviderProjGroup::claimChildren() const
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{
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    // Collect any child fields
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    std::vector<App::DocumentObject*> temp;
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    const std::vector<App::DocumentObject *> &views = getObject()->Views.getValues();
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    try {
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      for (std::vector<App::DocumentObject *>::const_iterator it = views.begin(); it != views.end(); ++it) {
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          temp.push_back(*it);
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      }
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      return temp;
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    } catch (...) {
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        std::vector<App::DocumentObject*> tmp;
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        return tmp;
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    }
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}
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TechDraw::DrawProjGroup* ViewProviderProjGroup::getViewObject() const
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{
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    return dynamic_cast<TechDraw::DrawProjGroup*>(pcObject);
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}
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TechDraw::DrawProjGroup* ViewProviderProjGroup::getObject() const
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{
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    return getViewObject();
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}
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