/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
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** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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#include "snapshotwindow.h"
#include "snapshothandler.h"

#include "debuggeractions.h"
#include "debuggercore.h"
#include "debuggerengine.h"

#include <utils/qtcassert.h>
#include <utils/savedaction.h>

#include <QtCore/QDebug>

#include <QtGui/QHeaderView>
#include <QtGui/QMenu>
#include <QtGui/QKeyEvent>


namespace Debugger {
namespace Internal {

///////////////////////////////////////////////////////////////////////
//
// SnapshotWindow
//
///////////////////////////////////////////////////////////////////////

SnapshotWindow::SnapshotWindow(SnapshotHandler *handler)
{
    m_snapshotHandler = handler;

    QAction *act = debuggerCore()->action(UseAlternatingRowColors);
    setWindowTitle(tr("Snapshots"));
    setAttribute(Qt::WA_MacShowFocusRect, false);
    setFrameStyle(QFrame::NoFrame);
    setAlternatingRowColors(act->isChecked());
    setRootIsDecorated(false);
    setIconSize(QSize(10, 10));

    header()->setDefaultAlignment(Qt::AlignLeft);

    connect(this, SIGNAL(activated(QModelIndex)),
        SLOT(rowActivated(QModelIndex)));
    connect(act, SIGNAL(toggled(bool)),
        SLOT(setAlternatingRowColorsHelper(bool)));
    connect(debuggerCore()->action(AlwaysAdjustSnapshotsColumnWidths),
        SIGNAL(toggled(bool)),
        SLOT(setAlwaysResizeColumnsToContents(bool)));
}

void SnapshotWindow::rowActivated(const QModelIndex &index)
{
    m_snapshotHandler->activateSnapshot(index.row());
}

void SnapshotWindow::keyPressEvent(QKeyEvent *ev)
{
    if (ev->key() == Qt::Key_Delete) {
        QItemSelectionModel *sm = selectionModel();
        QTC_ASSERT(sm, return);
        QModelIndexList si = sm->selectedIndexes();
        if (si.isEmpty())
            si.append(currentIndex().sibling(currentIndex().row(), 0));

        foreach (const QModelIndex &idx, si)
            if (idx.column() == 0)
                removeSnapshot(idx.row());
    }
    QTreeView::keyPressEvent(ev);
}

void SnapshotWindow::contextMenuEvent(QContextMenuEvent *ev)
{
    QModelIndex idx = indexAt(ev->pos());

    QMenu menu;

    QAction *actCreate = menu.addAction(tr("Create Snapshot"));
    actCreate->setEnabled(idx.data(SnapshotCapabilityRole).toBool());
    menu.addSeparator();

    QAction *actRemove = menu.addAction(tr("Remove Snapshot"));
    actRemove->setEnabled(idx.isValid());
    menu.addSeparator();

    QAction *actAdjust = menu.addAction(tr("Adjust Column Widths to Contents"));
    menu.addAction(debuggerCore()->action(AlwaysAdjustSnapshotsColumnWidths));
    menu.addSeparator();

    menu.addAction(debuggerCore()->action(SettingsDialog));

    QAction *act = menu.exec(ev->globalPos());

    if (act == actCreate)
        m_snapshotHandler->createSnapshot(idx.row());
    else if (act == actRemove)
        removeSnapshot(idx.row());
    else if (act == actAdjust)
        resizeColumnsToContents();
}

void SnapshotWindow::removeSnapshot(int i)
{
    m_snapshotHandler->at(i)->quitDebugger();
}

void SnapshotWindow::resizeColumnsToContents()
{
    for (int i = model()->columnCount(); --i >= 0; )
        resizeColumnToContents(i);
}

void SnapshotWindow::setAlwaysResizeColumnsToContents(bool on)
{
    QHeaderView::ResizeMode mode =
        on ? QHeaderView::ResizeToContents : QHeaderView::Interactive;
    for (int i = model()->columnCount(); --i >= 0; )
        header()->setResizeMode(i, mode);
}

} // namespace Internal
} // namespace Debugger