/***************************************************************************
 *   Copyright (C) 2009 by Stefan Weinzierl                                *
 *   Stefan@Weinzierl-Stefan.de                                            *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "windowmenu.h"

#include <QSignalMapper>
#include <QDialog>
#include <QMdiArea>
#include <QVBoxLayout>
#include <QListWidget>
#include <QDialogButtonBox>
#include <QMdiSubWindow>
#include <QToolBar>
#include <QDockWidget>
#include <QTabWidget>

WindowMenu::WindowMenu(const QString &title, QWidget *parent)
    : QMenu(title, parent), m_customMenu(0), m_toolBars(0), m_docks(0)
{
    m_windowMapper = new QSignalMapper(this);

    m_closeAct = new QAction(tr("Cl&ose"), this);
    m_closeAct->setShortcut(tr("Ctrl+F4"));
    m_closeAct->setStatusTip(tr("Close the active window"));

    m_closeAllAct = new QAction(tr("Close &All"), this);
    m_closeAllAct->setStatusTip(tr("Close all the windows"));

    m_tileAct = new QAction(tr("&Tile"), this);
    m_tileAct->setStatusTip(tr("Tile the windows"));

    m_cascadeAct = new QAction(tr("&Cascade"), this);
    m_cascadeAct->setStatusTip(tr("Cascade the windows"));

    m_nextAct = new QAction(tr("Ne&xt"), this);
    m_nextAct->setStatusTip(tr("Move the focus to the next window"));

    m_previousAct = new QAction(tr("Pre&vious"), this);
    m_previousAct->setStatusTip(tr("Move the focus to the previous window"));

    m_moreAct = new QAction(tr("&More Windows..."), this);
    m_moreAct->setStatusTip(tr("Show more windows"));

    m_tabbedAct= new QAction(tr("Tabbed View"), this);
    m_tabbedAct->setCheckable(true);
    m_tabbedAct->setEnabled(false);

        //QAction *action;
    m_toolBars=addMenu(tr("Toolbars"));
    m_docks=addMenu(tr("Docks"));

    addSeparator();
  addAction(m_closeAct);
  addAction(m_closeAllAct);
  addSeparator();
  addAction(m_tileAct);
  addAction(m_cascadeAct);
  addAction(m_tabbedAct);
  addSeparator();
  addAction(m_nextAct);
  addAction(m_previousAct);
  addSeparator();
    addAction(m_moreAct);

    connect(this, SIGNAL(aboutToShow()), this, SLOT(showMenu()));
    connect(m_moreAct, SIGNAL(triggered()), this, SLOT(showMoreWindows()));

    setMdi(parent->findChild<QMdiArea*>(""));
    m_tab=0;
}

void WindowMenu::tabbedView(bool tabbed)
{
    if (!m_mdi)
        return;
    m_mdi->setViewMode(tabbed ? QMdiArea::TabbedView : QMdiArea::SubWindowView);

}

WindowMenu::~WindowMenu()
{
}

void WindowMenu::setTabWidget(QTabWidget * t)
{
  m_tab=t;
}

void WindowMenu::setMdi(QMdiArea *mdi)
{
    m_mdi=mdi;

    m_closeAct->disconnect();
    m_closeAllAct->disconnect();
    m_tileAct->disconnect();
    m_cascadeAct->disconnect();
    m_nextAct->disconnect();
    m_previousAct->disconnect();
    m_windowMapper->disconnect();
        m_tabbedAct->disconnect();
        m_tabbedAct->setChecked(false);
        m_tabbedAct->setEnabled(false);

    if (m_mdi) {
        connect(m_closeAct, SIGNAL(triggered()), m_mdi, SLOT(closeActiveSubWindow()));
        connect(m_closeAllAct, SIGNAL(triggered()), m_mdi, SLOT(closeAllSubWindows()));
        connect(m_tileAct, SIGNAL(triggered()), m_mdi, SLOT(tileSubWindows()));
        connect(m_cascadeAct, SIGNAL(triggered()), m_mdi, SLOT(cascadeSubWindows()));
        connect(m_nextAct, SIGNAL(triggered()), m_mdi, SLOT(activateNextSubWindow()));
        connect(m_previousAct, SIGNAL(triggered()), m_mdi, SLOT(activatePreviousSubWindow()));
        connect(m_windowMapper, SIGNAL(mapped(QWidget *)), this, SLOT(setActive(QWidget *)));

                connect(m_tabbedAct, SIGNAL(triggered(bool)), this, SLOT(tabbedView(bool)));
                m_tabbedAct->setEnabled(true);
                m_tabbedAct->setChecked(m_mdi->viewMode()==QMdiArea::TabbedView ? true : false);
    }
}

void WindowMenu::setActive(QWidget *w)
{
    if (m_mdi) m_mdi->setActiveSubWindow(qobject_cast<QMdiSubWindow*>(w));
}

void WindowMenu::showMenu()
{
    bool hasChild=false;

    qDeleteAll(m_actions);
    m_actions.clear();

    if (m_mdi) {
    QList<QMdiSubWindow*> windows=m_mdi->subWindowList();
        QMdiSubWindow *activeChild=m_mdi->activeSubWindow();

        m_moreAct->setVisible(windows.count()>9);
        hasChild=!windows.isEmpty();

    for (int i = 0; i<windows.size() && i<9; ++i) {
            QMdiSubWindow *child=windows.at(i);

            QAction *action=new QAction(tr("&%1 %2").arg(i+1).arg(child->windowTitle()), this);
            m_actions.append(action);
            insertAction(m_moreAct, action);
            action->setIcon(child->windowIcon());
            action->setStatusTip(child->statusTip());
            action->setToolTip(child->toolTip());
            action->setCheckable(true);
            action ->setChecked(child==activeChild);
            connect(action, SIGNAL(triggered()), m_windowMapper, SLOT(map()));
            m_windowMapper->setMapping(action, child);
     }
    }
    if (m_tab)
    {
      for(int i=0; i<m_tab->count(); ++i)
      {
        QWidget* w=m_tab->widget(i);
        QAction* action=new QAction(tr("%1").arg(m_tab->tabText(i)), this);
        action->setData(i);
        m_actions.append(action);
        action->setCheckable(true);
        if  (w->isVisible())
          action->setChecked(true);
        insertAction(m_moreAct, action);
        //connect(action, SIGNAL(triggered(bool)), w, SLOT(setVisible(bool)));
        connect(action, SIGNAL(triggered(bool)), SLOT(showHideTab(bool)));
      }
    }
    m_closeAct->setEnabled(hasChild);
    m_closeAllAct->setEnabled(hasChild);
    m_tileAct->setEnabled(hasChild);
    m_cascadeAct->setEnabled(hasChild);
    m_nextAct->setEnabled(hasChild);
    m_previousAct->setEnabled(hasChild);


    m_toolBars->clear();
    QList<QToolBar*> toolBars= parent()->findChildren<QToolBar*>(); //(parent());
    m_toolBars->menuAction()->setVisible(!toolBars.isEmpty());
    foreach (QToolBar *bar, toolBars) {
        if (!bar->actions().isEmpty()) {
            m_toolBars->addAction(bar->toggleViewAction());
        }
    }


    m_docks->clear();
    QList<QDockWidget*> docks= parent()->findChildren<QDockWidget*>();//qFindChildren<QDockWidget*>(parent());
    m_docks->menuAction()->setVisible(!docks.isEmpty());
    foreach (QDockWidget *dock, docks) {
        m_docks->addAction(dock->toggleViewAction());
    }
}

void WindowMenu::showHideTab(bool b)
{
  QAction* a=qobject_cast<QAction*>(sender());
  if (!a)
    return;
  int n=a->data().toInt();
  if (!b)
    return;
  m_tab->setCurrentIndex(n); //widget(0)->setVisible(b);
}

void WindowMenu::showMoreWindows()
{
    QDialog dlg;
    QVBoxLayout *layout=new QVBoxLayout(&dlg);

    QListWidget *list=new QListWidget(&dlg);
    layout->addWidget(list);

    QDialogButtonBox *box=new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel, Qt::Horizontal, &dlg);
    layout->addWidget(box);

    connect(box, SIGNAL(accepted()), &dlg, SLOT(accept()));
    connect(box, SIGNAL(rejected()), &dlg, SLOT(reject()));
    connect(list, SIGNAL(itemActivated(QListWidgetItem *)), &dlg, SLOT(accept()));

    if (m_mdi) {
    QList<QMdiSubWindow*> windows=m_mdi->subWindowList();
        QMdiSubWindow *activeChild=m_mdi->activeSubWindow();

    for (int i=0; i<windows.size(); ++i) {
            QWidget *child=windows.at(i);
            QListWidgetItem *item=new QListWidgetItem(list);

            item->setText(child->windowTitle());
            item->setIcon(child->windowIcon());
            item->setToolTip(child->toolTip());
            item->setData(Qt::UserRole, qVariantFromValue((void *)child));
            if (child==activeChild) {
                item->setSelected(true);
                list->setCurrentItem(item);
            }
        }
    }

    if (dlg.exec()==QDialog::Accepted && m_mdi) {
        QListWidgetItem *item=list->currentItem();
        if (item) {
            QVariant var=item->data(Qt::UserRole);
            QMdiSubWindow *wdg=static_cast<QMdiSubWindow*>(var.value<void*>());
            m_mdi->setActiveSubWindow(wdg);
        }
    }
}