/***************************************************************************
 *   Copyright (c) 2004 Jürgen Riegel <juergen.riegel@web.de>              *
 *   Copyright (c) 2012 Luke Parry <l.parry@warwick.ac.uk>                 *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#include "PreCompiled.h"
#ifndef _PreComp_
#include <QPushButton>
#endif

#include <App/DocumentObject.h>
#include <Gui/ComboView.h>
#include <Gui/DockWindowManager.h>
#include <Gui/propertyeditor/PropertyEditor.h>
#include <Gui/propertyeditor/PropertyModel.h>
#include <Mod/TechDraw/App/DrawLeaderLine.h>
#include <Mod/TechDraw/App/DrawViewBalloon.h>

#include "QGIView.h"
#include "ViewProviderAnnotation.h"


using namespace TechDrawGui;

PROPERTY_SOURCE(TechDrawGui::ViewProviderAnnotation, TechDrawGui::ViewProviderDrawingView)

//**************************************************************************
// Construction/Destruction

ViewProviderAnnotation::ViewProviderAnnotation() { sPixmap = "actions/TechDraw_Annotation"; }

ViewProviderAnnotation::~ViewProviderAnnotation() {}

void ViewProviderAnnotation::updateData(const App::Property* prop)
{
    if (prop == &(getViewObject()->Text) || prop == &(getViewObject()->Font)
        || prop == &(getViewObject()->TextColor) || prop == &(getViewObject()->TextSize)
        || prop == &(getViewObject()->LineSpace) || prop == &(getViewObject()->TextStyle)
        || prop == &(getViewObject()->MaxWidth)) {
        // redraw QGIVP
        QGIView* qgiv = getQView();
        if (qgiv) {
            qgiv->updateView(true);
        }
    }

    ViewProviderDrawingView::updateData(prop);
}

std::vector<App::DocumentObject*> ViewProviderAnnotation::claimChildren() const
{
    // Collect any child Document Objects and put them in the right place in the Feature tree
    // valid children of an Annotation are:
    //    - Balloons
    //    - Leaders
    std::vector<App::DocumentObject*> temp;
    const std::vector<App::DocumentObject*>& views = getViewObject()->getInList();
    try {
        for (std::vector<App::DocumentObject*>::const_iterator it = views.begin();
             it != views.end(); ++it) {
            if ((*it)->isDerivedFrom<TechDraw::DrawViewBalloon>()) {
                temp.push_back((*it));
            }
            else if ((*it)->isDerivedFrom<TechDraw::DrawLeaderLine>()) {
                temp.push_back((*it));
            }
        }
        return temp;
    }
    catch (...) {
        return std::vector<App::DocumentObject*>();
    }
}

TechDraw::DrawViewAnnotation* ViewProviderAnnotation::getViewObject() const
{
    return dynamic_cast<TechDraw::DrawViewAnnotation*>(pcObject);
}

bool ViewProviderAnnotation::doubleClicked()
{
    setEdit(ViewProvider::Default);
    return true;
}

bool ViewProviderAnnotation::setEdit(int ModNum)
{
    if (ModNum != ViewProvider::Default) {
        return ViewProviderDrawingView::setEdit(ModNum);
    }
    // retrieves the PropertyEditor of the Data tab in the comboview of the
    // mainwindow and opens the editor of the "text" property of the selected
    // item and mimics a click of the button inside that editor, which opens
    // the plain text edit dialog
    // I feel quite dirty writing this but that was the cleanest way to prevent
    // code duplication, because everything just works as long as the structure
    // does not change. In case this modus operandi gets used more
    // often, this should be delegated to a utility function that takes a property
    // path and opens the "deepest" editor of that property
    auto comboView = qobject_cast<Gui::DockWnd::ComboView*>(
        Gui::DockWindowManager::instance()->getDockWindow("Model"));
    if (!comboView) {
        return false;
    }
    auto dataPropView = comboView->findChild<Gui::PropertyEditor::PropertyEditor*>(
        QStringLiteral("propertyEditorData"));
    if (!dataPropView) {
        return false;
    }
    auto dataPropModel = qobject_cast<Gui::PropertyEditor::PropertyModel*>(dataPropView->model());
    if (!dataPropModel) {
        return false;
    }
    // the property data is a tree model, to we need the first item in the first group
    auto index = dataPropModel->propertyIndexFromPath(
        {QStringLiteral("Annotation"), QStringLiteral("Text")});
    // setting the current item also opens the editor
    dataPropView->setCurrentIndex(index);
    dataPropView->activated(index);
    // there is a button in the editor widget that opens a plain text dialog
    auto button = dataPropView->findChild<QPushButton*>();
    if (button) {
        button->click();
    }
    return true;
}