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**
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** accordance with the Qt Commercial License Agreement provided with the
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** 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 "moduleswindow.h"

#include "debuggeractions.h"
#include "debuggerconstants.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/QResizeEvent>


///////////////////////////////////////////////////////////////////////////
//
// ModulesWindow
//
///////////////////////////////////////////////////////////////////////////

namespace Debugger {
namespace Internal {

ModulesWindow::ModulesWindow(QWidget *parent)
  : QTreeView(parent), m_alwaysResizeColumnsToContents(false)
{
    QAction *act = debuggerCore()->action(UseAlternatingRowColors);
    setWindowTitle(tr("Modules"));
    setAttribute(Qt::WA_MacShowFocusRect, false);
    setSortingEnabled(true);
    setAlternatingRowColors(act->isChecked());
    setRootIsDecorated(false);
    setIconSize(QSize(10, 10));

    connect(this, SIGNAL(activated(QModelIndex)),
        SLOT(moduleActivated(QModelIndex)));
    connect(act, SIGNAL(toggled(bool)),
        SLOT(setAlternatingRowColorsHelper(bool)));
}

void ModulesWindow::moduleActivated(const QModelIndex &index)
{
    debuggerCore()->gotoLocation(index.data().toString());
}

void ModulesWindow::contextMenuEvent(QContextMenuEvent *ev)
{
    QString name;
    QModelIndex index = indexAt(ev->pos());
    if (index.isValid())
        index = index.sibling(index.row(), 0);
    if (index.isValid())
        name = index.data().toString();

    DebuggerEngine *engine = debuggerCore()->currentEngine();
    const bool enabled = engine->debuggerActionsEnabled();
    const unsigned capabilities = engine->debuggerCapabilities();

    QMenu menu;

    QAction *actUpdateModuleList
        = new QAction(tr("Update Module List"), &menu);
    actUpdateModuleList
        ->setEnabled(enabled && (capabilities & ReloadModuleCapability));

    QAction *actShowSourceFiles
        = new QAction(tr("Show Source Files for Module \"%1\"").arg(name), &menu);
    actShowSourceFiles
        ->setEnabled(enabled && (capabilities & ReloadModuleCapability));

    QAction *actLoadSymbolsForAllModules
        = new QAction(tr("Load Symbols for All Modules"), &menu);
    actLoadSymbolsForAllModules
        -> setEnabled(enabled && (capabilities & ReloadModuleSymbolsCapability));

    QAction *actExamineAllModules
        = new QAction(tr("Examine All Modules"), &menu);
    actExamineAllModules
        -> setEnabled(enabled && (capabilities & ReloadModuleSymbolsCapability));

    QAction *actLoadSymbolsForModule = 0;
    QAction *actEditFile = 0;
    QAction *actShowSymbols = 0;
    if (name.isEmpty()) {
        actLoadSymbolsForModule = new QAction(tr("Load Symbols for Module"), &menu);
        actLoadSymbolsForModule->setEnabled(false);
        actEditFile = new QAction(tr("Edit File"), &menu);
        actEditFile->setEnabled(false);
        actShowSymbols = new QAction(tr("Show Symbols"), &menu);
        actShowSymbols->setEnabled(false);
    } else {
        actLoadSymbolsForModule
            = new QAction(tr("Load Symbols for Module \"%1\"").arg(name), &menu);
        actLoadSymbolsForModule
            ->setEnabled(capabilities & ReloadModuleSymbolsCapability);
        actEditFile
            = new QAction(tr("Edit File \"%1\"").arg(name), &menu);
        actShowSymbols
            = new QAction(tr("Show Symbols in File \"%1\"").arg(name), &menu);
    }

    menu.addAction(actUpdateModuleList);
    //menu.addAction(actShowSourceFiles); // FIXME
    menu.addAction(actLoadSymbolsForAllModules);
    menu.addAction(actExamineAllModules);
    menu.addAction(actLoadSymbolsForModule);
    menu.addAction(actEditFile);
    //menu.addAction(actShowSymbols); // FIXME
    menu.addSeparator();
    QAction *actAdjustColumnWidths =
        menu.addAction(tr("Adjust Column Widths to Contents"));
    QAction *actAlwaysAdjustColumnWidth =
        menu.addAction(tr("Always Adjust Column Widths to Contents"));
    actAlwaysAdjustColumnWidth->setCheckable(true);
    actAlwaysAdjustColumnWidth->setChecked(m_alwaysResizeColumnsToContents);
    menu.addSeparator();
    menu.addAction(debuggerCore()->action(SettingsDialog));

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

    if (act == actUpdateModuleList) {
        engine->reloadModules();
    } else if (act == actAdjustColumnWidths) {
        resizeColumnsToContents();
    } else if (act == actAlwaysAdjustColumnWidth) {
        setAlwaysResizeColumnsToContents(!m_alwaysResizeColumnsToContents);
    //} else if (act == actShowSourceFiles) {
    //    emit displaySourceRequested(name);
    } else if (act == actLoadSymbolsForAllModules) {
        engine->loadAllSymbols();
    } else if (act == actExamineAllModules) {
        engine->examineModules();
    } else if (act == actLoadSymbolsForModule) {
        engine->loadSymbols(name);
    } else if (act == actEditFile) {
        debuggerCore()->gotoLocation(name);
    } else if (act == actShowSymbols) {
        // FIXME setModelData(RequestModuleSymbolsRole, name);
    }
}

void ModulesWindow::resizeColumnsToContents()
{
    resizeColumnToContents(0);
    resizeColumnToContents(1);
    resizeColumnToContents(2);
    resizeColumnToContents(3);
}

void ModulesWindow::setAlwaysResizeColumnsToContents(bool on)
{
    m_alwaysResizeColumnsToContents = on;
    QHeaderView::ResizeMode mode = on
        ? QHeaderView::ResizeToContents : QHeaderView::Interactive;
    header()->setResizeMode(0, mode);
    header()->setResizeMode(1, mode);
    header()->setResizeMode(2, mode);
    header()->setResizeMode(3, mode);
    header()->setResizeMode(4, mode);
    //setColumnHidden(3, true);
}

void ModulesWindow::setModel(QAbstractItemModel *model)
{
    QTreeView::setModel(model);
    setAlwaysResizeColumnsToContents(true);
}

} // namespace Internal
} // namespace Debugger