editormanager.cpp 69.7 KB
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/**************************************************************************
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**
** This file is part of Qt Creator
**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "editormanager.h"
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#include "editorview.h"
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#include "openeditorswindow.h"
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#include "openeditorsview.h"
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#include "openeditorsmodel.h"
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#include "openwithdialog.h"
#include "filemanager.h"
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#include "icore.h"
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#include "ieditor.h"
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#include "iversioncontrol.h"
#include "mimedatabase.h"
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#include "tabpositionindicator.h"
#include "vcsmanager.h"
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#include <coreplugin/editortoolbar.h>
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#include <coreplugin/coreconstants.h>
#include <coreplugin/modemanager.h>
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#include <coreplugin/actionmanager/actionmanager.h>
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#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
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#include <coreplugin/editormanager/ieditorfactory.h>
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#include <coreplugin/editormanager/iexternaleditor.h>
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#include <coreplugin/icorelistener.h>
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#include <coreplugin/imode.h>
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#include <coreplugin/settingsdatabase.h>
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#include <coreplugin/variablemanager.h>
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#include <coreplugin/uniqueidmanager.h>
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#include <extensionsystem/pluginmanager.h>

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

#include <QtCore/QDebug>
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#include <QtCore/QFileInfo>
#include <QtCore/QMap>
#include <QtCore/QProcess>
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#include <QtCore/QSet>
#include <QtCore/QSettings>
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#include <QtCore/QTextCodec>
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#include <QtGui/QAction>
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#include <QtGui/QShortcut>
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#include <QtGui/QApplication>
#include <QtGui/QFileDialog>
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#include <QtGui/QLayout>
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#include <QtGui/QMainWindow>
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#include <QtGui/QMenu>
#include <QtGui/QMessageBox>
#include <QtGui/QPushButton>
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#include <QtGui/QSplitter>
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#include <QtGui/QStackedLayout>
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Q_DECLARE_METATYPE(Core::IEditor*)

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enum { debugEditorManager=0 };

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static inline ExtensionSystem::PluginManager *pluginManager()
{
    return ExtensionSystem::PluginManager::instance();
}

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//===================EditorClosingCoreListener======================

namespace Core {
namespace Internal {

class EditorClosingCoreListener : public ICoreListener
{
public:
    EditorClosingCoreListener(EditorManager *em);
    bool editorAboutToClose(IEditor *editor);
    bool coreAboutToClose();

private:
    EditorManager *m_em;
};

EditorClosingCoreListener::EditorClosingCoreListener(EditorManager *em)
        : m_em(em)
{
}

bool EditorClosingCoreListener::editorAboutToClose(IEditor *)
{
    return true;
}

bool EditorClosingCoreListener::coreAboutToClose()
{
    // Do not ask for files to save.
    // MainWindow::closeEvent has already done that.
    return m_em->closeAllEditors(false);
}

} // namespace Internal
} // namespace Core

using namespace Core;
using namespace Core::Internal;
using namespace Utils;

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//===================EditorManager=====================

EditorManagerPlaceHolder *EditorManagerPlaceHolder::m_current = 0;

EditorManagerPlaceHolder::EditorManagerPlaceHolder(Core::IMode *mode, QWidget *parent)
    : QWidget(parent), m_mode(mode)
{
    setLayout(new QVBoxLayout);
    layout()->setMargin(0);
    connect(Core::ModeManager::instance(), SIGNAL(currentModeChanged(Core::IMode *)),
            this, SLOT(currentModeChanged(Core::IMode *)));
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    currentModeChanged(Core::ModeManager::instance()->currentMode());
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}

EditorManagerPlaceHolder::~EditorManagerPlaceHolder()
{
    if (m_current == this) {
        EditorManager::instance()->setParent(0);
        EditorManager::instance()->hide();
    }
}

void EditorManagerPlaceHolder::currentModeChanged(Core::IMode *mode)
{
    if (m_current == this) {
        m_current = 0;
        EditorManager::instance()->setParent(0);
        EditorManager::instance()->hide();
    }
    if (m_mode == mode) {
        m_current = this;
        layout()->addWidget(EditorManager::instance());
        EditorManager::instance()->show();
    }
}

EditorManagerPlaceHolder* EditorManagerPlaceHolder::current()
{
    return m_current;
}

// ---------------- EditorManager

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namespace Core {
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struct EditorManagerPrivate {
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    explicit EditorManagerPrivate(ICore *core, QWidget *parent);
    ~EditorManagerPrivate();
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    Internal::EditorView *m_view;
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    Internal::SplitterOrView *m_splitter;
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    QPointer<IEditor> m_currentEditor;
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    QPointer<SplitterOrView> m_currentView;
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    ICore *m_core;


    // actions
    QAction *m_revertToSavedAction;
    QAction *m_saveAction;
    QAction *m_saveAsAction;
    QAction *m_closeCurrentEditorAction;
    QAction *m_closeAllEditorsAction;
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    QAction *m_closeOtherEditorsAction;
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    QAction *m_gotoNextDocHistoryAction;
    QAction *m_gotoPreviousDocHistoryAction;
    QAction *m_goBackAction;
    QAction *m_goForwardAction;
    QAction *m_openInExternalEditorAction;
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    QAction *m_splitAction;
    QAction *m_splitSideBySideAction;
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    QAction *m_removeCurrentSplitAction;
    QAction *m_removeAllSplitsAction;
    QAction *m_gotoOtherSplitAction;
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    Internal::OpenEditorsWindow *m_windowPopup;
    Internal::EditorClosingCoreListener *m_coreListener;

    QMap<QString, QVariant> m_editorStates;
    Internal::OpenEditorsViewFactory *m_openEditorsFactory;

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    OpenEditorsModel *m_editorModel;
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    QString m_externalEditor;
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    IFile::ReloadSetting m_reloadSetting;
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    IFile::Utf8BomSetting m_utf8BomSetting;
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    QString m_titleAddition;
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};
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}
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EditorManagerPrivate::EditorManagerPrivate(ICore *core, QWidget *parent) :
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    m_view(0),
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    m_splitter(0),
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    m_core(core),
    m_revertToSavedAction(new QAction(EditorManager::tr("Revert to Saved"), parent)),
    m_saveAction(new QAction(parent)),
    m_saveAsAction(new QAction(parent)),
    m_closeCurrentEditorAction(new QAction(EditorManager::tr("Close"), parent)),
    m_closeAllEditorsAction(new QAction(EditorManager::tr("Close All"), parent)),
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    m_closeOtherEditorsAction(new QAction(EditorManager::tr("Close Others"), parent)),
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    m_gotoNextDocHistoryAction(new QAction(EditorManager::tr("Next Open Document in History"), parent)),
    m_gotoPreviousDocHistoryAction(new QAction(EditorManager::tr("Previous Open Document in History"), parent)),
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    m_goBackAction(new QAction(QIcon(QLatin1String(Constants::ICON_PREV)), EditorManager::tr("Go Back"), parent)),
    m_goForwardAction(new QAction(QIcon(QLatin1String(Constants::ICON_NEXT)), EditorManager::tr("Go Forward"), parent)),
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    m_openInExternalEditorAction(new QAction(EditorManager::tr("Open in External Editor"), parent)),
    m_windowPopup(0),
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    m_coreListener(0),
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    m_reloadSetting(IFile::AlwaysAsk),
    m_utf8BomSetting(IFile::OnlyKeep)
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{
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    m_editorModel = new OpenEditorsModel(parent);
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}

EditorManagerPrivate::~EditorManagerPrivate()
{
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//    clearNavigationHistory();
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}

EditorManager *EditorManager::m_instance = 0;

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static Command *createSeparator(ActionManager *am, QObject *parent,
                                const QString &name,
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                                const Context &context)
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{
    QAction *tmpaction = new QAction(parent);
    tmpaction->setSeparator(true);
    Command *cmd = am->registerAction(tmpaction, name, context);
    return cmd;
}

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EditorManager::EditorManager(ICore *core, QWidget *parent) :
    QWidget(parent),
    m_d(new EditorManagerPrivate(core, parent))
{
    m_instance = this;

    connect(m_d->m_core, SIGNAL(contextAboutToChange(Core::IContext *)),
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            this, SLOT(handleContextChange(Core::IContext *)));
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    const Context editManagerContext(Constants::C_EDITORMANAGER);
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    // combined context for edit & design modes
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    const Context editDesignContext(Constants::C_EDITORMANAGER, Constants::C_DESIGN_MODE);
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    ActionManager *am = m_d->m_core->actionManager();
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    ActionContainer *mfile = am->actionContainer(Constants::M_FILE);
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    // Revert to saved
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    m_d->m_revertToSavedAction->setIcon(QIcon::fromTheme(QLatin1String("document-revert")));
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    Command *cmd = am->registerAction(m_d->m_revertToSavedAction,
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                                       Constants::REVERTTOSAVED, editManagerContext);
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    cmd->setAttribute(Command::CA_UpdateText);
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    cmd->setDefaultText(tr("Revert File to Saved"));
    mfile->addAction(cmd, Constants::G_FILE_SAVE);
    connect(m_d->m_revertToSavedAction, SIGNAL(triggered()), this, SLOT(revertToSaved()));

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    // Save Action
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    am->registerAction(m_d->m_saveAction, Constants::SAVE, editManagerContext);
    connect(m_d->m_saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));

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    // Save As Action
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    am->registerAction(m_d->m_saveAsAction, Constants::SAVEAS, editManagerContext);
    connect(m_d->m_saveAsAction, SIGNAL(triggered()), this, SLOT(saveFileAs()));

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    // Window Menu
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    ActionContainer *mwindow = am->actionContainer(Constants::M_WINDOW);
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    // Window menu separators
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    QAction *tmpaction = new QAction(this);
    tmpaction->setSeparator(true);
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    cmd = am->registerAction(tmpaction, "QtCreator.Window.Sep.Split", editManagerContext);
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);

    tmpaction = new QAction(this);
    tmpaction->setSeparator(true);
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    cmd = am->registerAction(tmpaction, "QtCreator.Window.Sep.Navigate", editManagerContext);
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    mwindow->addAction(cmd, Constants::G_WINDOW_NAVIGATE);

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    // Close Action
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    cmd = am->registerAction(m_d->m_closeCurrentEditorAction, Constants::CLOSE, editManagerContext);
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+W")));
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    cmd->setAttribute(Core::Command::CA_UpdateText);
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    cmd->setDefaultText(m_d->m_closeCurrentEditorAction->text());
    mfile->addAction(cmd, Constants::G_FILE_CLOSE);
    connect(m_d->m_closeCurrentEditorAction, SIGNAL(triggered()), this, SLOT(closeEditor()));

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#ifdef Q_WS_WIN
    // workaround for QTCREATORBUG-72
    QShortcut *sc = new QShortcut(parent);
    cmd = am->registerShortcut(sc, Constants::CLOSE_ALTERNATIVE, editManagerContext);
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+F4")));
    cmd->setDefaultText(EditorManager::tr("Close"));
    connect(sc, SIGNAL(activated()), this, SLOT(closeEditor()));
#endif

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    // Close All Action
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    cmd = am->registerAction(m_d->m_closeAllEditorsAction, Constants::CLOSEALL, editManagerContext);
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Shift+W")));
    mfile->addAction(cmd, Constants::G_FILE_CLOSE);
    connect(m_d->m_closeAllEditorsAction, SIGNAL(triggered()), this, SLOT(closeAllEditors()));

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    // Close All Others Action
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    cmd = am->registerAction(m_d->m_closeOtherEditorsAction, Constants::CLOSEOTHERS, editManagerContext);
    mfile->addAction(cmd, Constants::G_FILE_CLOSE);
    cmd->setAttribute(Core::Command::CA_UpdateText);
    connect(m_d->m_closeOtherEditorsAction, SIGNAL(triggered()), this, SLOT(closeOtherEditors()));

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    // Goto Previous In History Action
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    cmd = am->registerAction(m_d->m_gotoPreviousDocHistoryAction, Constants::GOTOPREVINHISTORY, editDesignContext);
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#ifdef Q_WS_MAC
    cmd->setDefaultKeySequence(QKeySequence(tr("Alt+Tab")));
#else
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Tab")));
#endif
    mwindow->addAction(cmd, Constants::G_WINDOW_NAVIGATE);
    connect(m_d->m_gotoPreviousDocHistoryAction, SIGNAL(triggered()), this, SLOT(gotoPreviousDocHistory()));

    // Goto Next In History Action
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    cmd = am->registerAction(m_d->m_gotoNextDocHistoryAction, Constants::GOTONEXTINHISTORY, editDesignContext);
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#ifdef Q_WS_MAC
    cmd->setDefaultKeySequence(QKeySequence(tr("Alt+Shift+Tab")));
#else
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Shift+Tab")));
#endif
    mwindow->addAction(cmd, Constants::G_WINDOW_NAVIGATE);
    connect(m_d->m_gotoNextDocHistoryAction, SIGNAL(triggered()), this, SLOT(gotoNextDocHistory()));

    // Go back in navigation history
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    cmd = am->registerAction(m_d->m_goBackAction, Constants::GO_BACK, editDesignContext);
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#ifdef Q_WS_MAC
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Alt+Left")));
#else
    cmd->setDefaultKeySequence(QKeySequence(tr("Alt+Left")));
#endif
    mwindow->addAction(cmd, Constants::G_WINDOW_NAVIGATE);
    connect(m_d->m_goBackAction, SIGNAL(triggered()), this, SLOT(goBackInNavigationHistory()));

    // Go forward in navigation history
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    cmd = am->registerAction(m_d->m_goForwardAction, Constants::GO_FORWARD, editDesignContext);
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#ifdef Q_WS_MAC
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Alt+Right")));
#else
    cmd->setDefaultKeySequence(QKeySequence(tr("Alt+Right")));
#endif
    mwindow->addAction(cmd, Constants::G_WINDOW_NAVIGATE);
    connect(m_d->m_goForwardAction, SIGNAL(triggered()), this, SLOT(goForwardInNavigationHistory()));

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#ifdef Q_WS_MAC
    QString prefix = tr("Meta+E");
#else
    QString prefix = tr("Ctrl+E");
#endif

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    m_d->m_splitAction = new QAction(tr("Split"), this);
    cmd = am->registerAction(m_d->m_splitAction, Constants::SPLIT, editManagerContext);
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    cmd->setDefaultKeySequence(QKeySequence(tr("%1,2").arg(prefix)));
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);
    connect(m_d->m_splitAction, SIGNAL(triggered()), this, SLOT(split()));

    m_d->m_splitSideBySideAction = new QAction(tr("Split Side by Side"), this);
    cmd = am->registerAction(m_d->m_splitSideBySideAction, Constants::SPLIT_SIDE_BY_SIDE, editManagerContext);
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    cmd->setDefaultKeySequence(QKeySequence(tr("%1,3").arg(prefix)));
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);
    connect(m_d->m_splitSideBySideAction, SIGNAL(triggered()), this, SLOT(splitSideBySide()));

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    m_d->m_removeCurrentSplitAction = new QAction(tr("Remove Current Split"), this);
    cmd = am->registerAction(m_d->m_removeCurrentSplitAction, Constants::REMOVE_CURRENT_SPLIT, editManagerContext);
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    cmd->setDefaultKeySequence(QKeySequence(tr("%1,0").arg(prefix)));
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);
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    connect(m_d->m_removeCurrentSplitAction, SIGNAL(triggered()), this, SLOT(removeCurrentSplit()));
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    m_d->m_removeAllSplitsAction = new QAction(tr("Remove All Splits"), this);
    cmd = am->registerAction(m_d->m_removeAllSplitsAction, Constants::REMOVE_ALL_SPLITS, editManagerContext);
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    cmd->setDefaultKeySequence(QKeySequence(tr("%1,1").arg(prefix)));
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);
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    connect(m_d->m_removeAllSplitsAction, SIGNAL(triggered()), this, SLOT(removeAllSplits()));
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    m_d->m_gotoOtherSplitAction = new QAction(tr("Go to Next Split"), this);
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    cmd = am->registerAction(m_d->m_gotoOtherSplitAction, Constants::GOTO_OTHER_SPLIT, editManagerContext);
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    cmd->setDefaultKeySequence(QKeySequence(tr("%1,o").arg(prefix)));
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    mwindow->addAction(cmd, Constants::G_WINDOW_SPLIT);
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    connect(m_d->m_gotoOtherSplitAction, SIGNAL(triggered()), this, SLOT(gotoOtherSplit()));
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    ActionContainer *medit = am->actionContainer(Constants::M_EDIT);
    ActionContainer *advancedMenu = am->createMenu(Constants::M_EDIT_ADVANCED);
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    medit->addMenu(advancedMenu, Constants::G_EDIT_ADVANCED);
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    advancedMenu->menu()->setTitle(tr("&Advanced"));
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    advancedMenu->appendGroup(Constants::G_EDIT_FORMAT);
    advancedMenu->appendGroup(Constants::G_EDIT_COLLAPSING);
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    advancedMenu->appendGroup(Constants::G_EDIT_BLOCKS);
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    advancedMenu->appendGroup(Constants::G_EDIT_FONT);
    advancedMenu->appendGroup(Constants::G_EDIT_EDITOR);

    // Advanced menu separators
    cmd = createSeparator(am, this, QLatin1String("QtCreator.Edit.Sep.Collapsing"), editManagerContext);
    advancedMenu->addAction(cmd, Constants::G_EDIT_COLLAPSING);
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    cmd = createSeparator(am, this, QLatin1String("QtCreator.Edit.Sep.Blocks"), editManagerContext);
    advancedMenu->addAction(cmd, Constants::G_EDIT_BLOCKS);
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    cmd = createSeparator(am, this, QLatin1String("QtCreator.Edit.Sep.Font"), editManagerContext);
    advancedMenu->addAction(cmd, Constants::G_EDIT_FONT);
    cmd = createSeparator(am, this, QLatin1String("QtCreator.Edit.Sep.Editor"), editManagerContext);
    advancedMenu->addAction(cmd, Constants::G_EDIT_EDITOR);
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    cmd = am->registerAction(m_d->m_openInExternalEditorAction, Constants::OPEN_IN_EXTERNAL_EDITOR, editManagerContext);
    cmd->setDefaultKeySequence(QKeySequence(tr("Alt+V,Alt+I")));
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    advancedMenu->addAction(cmd, Constants::G_EDIT_EDITOR);
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    connect(m_d->m_openInExternalEditorAction, SIGNAL(triggered()), this, SLOT(openInExternalEditor()));
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    // Connect to VariableManager for CURRENT_DOCUMENT variable setting
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    VariableManager::initEditorManagerConnections();
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    // other setup
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    m_d->m_splitter = new SplitterOrView(m_d->m_editorModel);
    m_d->m_view = m_d->m_splitter->view();

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    QHBoxLayout *layout = new QHBoxLayout(this);
    layout->setMargin(0);
    layout->setSpacing(0);
    layout->addWidget(m_d->m_splitter);
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    updateActions();

    m_d->m_windowPopup = new OpenEditorsWindow(this);
}

EditorManager::~EditorManager()
{
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    m_instance = 0;
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    if (m_d->m_core) {
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        ExtensionSystem::PluginManager *pm = ExtensionSystem::PluginManager::instance();
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        if (m_d->m_coreListener) {
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            pm->removeObject(m_d->m_coreListener);
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            delete m_d->m_coreListener;
        }
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        pm->removeObject(m_d->m_openEditorsFactory);
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        delete m_d->m_openEditorsFactory;
    }
    delete m_d;
}

void EditorManager::init()
{
    m_d->m_coreListener = new EditorClosingCoreListener(this);
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    pluginManager()->addObject(m_d->m_coreListener);
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    m_d->m_openEditorsFactory = new OpenEditorsViewFactory();
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    pluginManager()->addObject(m_d->m_openEditorsFactory);
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}

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EditorToolBar *EditorManager::createToolBar(QWidget *parent)
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{
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    return new EditorToolBar(parent);
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}

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QString EditorManager::defaultExternalEditor() const
{
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#ifdef Q_OS_UNIX
    return ConsoleProcess::defaultTerminalEmulator() + QLatin1String(
# ifdef Q_OS_MAC
            " -async"
# endif
            " -geom %Wx%H+%x+%y -e vi %f +%l +\"normal %c|\"");
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#else
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    return QLatin1String("notepad %f");
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#endif
}

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void EditorManager::removeEditor(IEditor *editor)
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{
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    bool isDuplicate = m_d->m_editorModel->isDuplicate(editor);
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    m_d->m_editorModel->removeEditor(editor);
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    if (!isDuplicate) {
        m_d->m_core->fileManager()->removeFile(editor->file());
    }
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    m_d->m_core->removeContextObject(editor);
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}

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void EditorManager::handleContextChange(Core::IContext *context)
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{
    if (debugEditorManager)
        qDebug() << Q_FUNC_INFO;
    IEditor *editor = context ? qobject_cast<IEditor*>(context) : 0;
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    if (editor) {
        setCurrentEditor(editor);
    } else {
        updateActions();
    }
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}

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void EditorManager::setCurrentEditor(IEditor *editor, bool ignoreNavigationHistory)
{
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    if (editor)
        setCurrentView(0);

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    if (m_d->m_currentEditor == editor)
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        return;
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    if (m_d->m_currentEditor && !ignoreNavigationHistory)
        addCurrentPositionToNavigationHistory();
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    if (m_d->m_currentEditor)
        disconnect(m_d->m_currentEditor, SIGNAL(changed()), this, SLOT(updateWindowTitle()));
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    m_d->m_currentEditor = editor;
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    if (editor) {
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        if (SplitterOrView *splitterOrView = m_d->m_splitter->findView(editor))
            splitterOrView->view()->setCurrentEditor(editor);
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        m_d->m_view->updateEditorHistory(editor); // the global view should have a complete history
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        connect(m_d->m_currentEditor, SIGNAL(changed()), this, SLOT(updateWindowTitle()));
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    }
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    updateActions();
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    updateWindowTitle();
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    emit currentEditorChanged(editor);
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}

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void EditorManager::setCurrentView(Core::Internal::SplitterOrView *view)
{
    if (view == m_d->m_currentView)
        return;

    SplitterOrView *old = m_d->m_currentView;
    m_d->m_currentView = view;

    if (old)
        old->update();
    if (view)
        view->update();
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    if (view && !view->editor())
        view->setFocus();
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}

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Core::Internal::SplitterOrView *EditorManager::currentSplitterOrView() const
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{
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    SplitterOrView *view = m_d->m_currentView;
    if (!view)
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        view = m_d->m_currentEditor?
               m_d->m_splitter->findView(m_d->m_currentEditor):
               m_d->m_splitter->findFirstView();
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    if (!view)
        return m_d->m_splitter;
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    return view;
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}

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Core::Internal::EditorView *EditorManager::currentEditorView() const
{
    return currentSplitterOrView()->view();
}

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QList<IEditor *> EditorManager::editorsForFileName(const QString &filename) const
{
    QList<IEditor *> found;
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    QString fixedname = FileManager::fixFileName(filename, FileManager::KeepLinks);
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    foreach (IEditor *editor, openedEditors()) {
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        if (fixedname == FileManager::fixFileName(editor->file()->fileName(), FileManager::KeepLinks))
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            found << editor;
    }
    return found;
}

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QList<IEditor *> EditorManager::editorsForFile(IFile *file) const
{
    QList<IEditor *> found;
    foreach (IEditor *editor, openedEditors()) {
        if (editor->file() == file)
            found << editor;
    }
    return found;
}

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IEditor *EditorManager::currentEditor() const
{
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    return m_d->m_currentEditor;
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}

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void EditorManager::emptyView(Core::Internal::EditorView *view)
{
    if (!view)
        return;

    QList<IEditor *> editors = view->editors();
    foreach (IEditor *editor, editors) {
        if (!m_d->m_editorModel->isDuplicate(editor)) {
            editors.removeAll(editor);
            view->removeEditor(editor);
            continue;
        }
        emit editorAboutToClose(editor);
        removeEditor(editor);
        view->removeEditor(editor);
    }
    emit editorsClosed(editors);
    foreach (IEditor *editor, editors) {
        delete editor;
    }
}

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void EditorManager::closeView(Core::Internal::EditorView *view)
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{
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    if (!view)
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        return;
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    if (view == m_d->m_view) {
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        if (IEditor *e = view->currentEditor())
            closeEditors(QList<IEditor *>() << e);
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        return;
    }

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    if (IEditor *e = view->currentEditor()) {
        /*
           when we are closing a view with an original editor which has
           duplicates, then make one of the duplicates the original.
           Otherwise the original would be kept around and the user might
           experience jumping to a missleading position within the file when
           visiting the file again. With the code below, the position within
           the file will be the position of the first duplicate which is still
           around.
        */
        if (!m_d->m_editorModel->isDuplicate(e)) {
            QList<IEditor *> duplicates = m_d->m_editorModel->duplicatesFor(e);
            if (!duplicates.isEmpty()) {
                m_d->m_editorModel->makeOriginal(duplicates.first());
            }
        }
    }

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    emptyView(view);

    SplitterOrView *splitterOrView = m_d->m_splitter->findView(view);
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    Q_ASSERT(splitterOrView);
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    Q_ASSERT(splitterOrView->view() == view);
    SplitterOrView *splitter = m_d->m_splitter->findSplitter(splitterOrView);
    Q_ASSERT(splitterOrView->hasEditors() == false);
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    splitterOrView->hide();
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    delete splitterOrView;

    splitter->unsplit();

    SplitterOrView *newCurrent = splitter->findFirstView();
    if (newCurrent) {
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        if (IEditor *e = newCurrent->editor()) {
            activateEditor(newCurrent->view(), e);
        } else {
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            setCurrentView(newCurrent);
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        }
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    }
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}
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QList<IEditor*>
    EditorManager::editorsForFiles(QList<IFile*> files) const
{
    const QList<IEditor *> editors = openedEditors();
    QSet<IEditor *> found;
    foreach (IFile *file, files) {
        foreach (IEditor *editor, editors) {
            if (editor->file() == file && !found.contains(editor)) {
                    found << editor;
            }
        }
    }
    return found.toList();
}

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QList<IFile *> EditorManager::filesForEditors(QList<IEditor *> editors) const
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{
    QSet<IEditor *> handledEditors;
    QList<IFile *> files;
    foreach (IEditor *editor, editors) {
        if (!handledEditors.contains(editor)) {
            files << editor->file();
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            handledEditors.insert(editor);
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        }
    }
    return files;
}

bool EditorManager::closeAllEditors(bool askAboutModifiedEditors)
{
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    m_d->m_editorModel->removeAllRestoredEditors();
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    if (closeEditors(openedEditors(), askAboutModifiedEditors)) {
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//        m_d->clearNavigationHistory();
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        return true;
    }
    return false;
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}

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void EditorManager::closeOtherEditors(IEditor *editor)
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{
    m_d->m_editorModel->removeAllRestoredEditors();
    QList<IEditor*> editors = openedEditors();
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    editors.removeAll(editor);
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    closeEditors(editors, true);
}

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void EditorManager::closeOtherEditors()
{
    IEditor *current = currentEditor();
    QTC_ASSERT(current, return);
    closeOtherEditors(current);
}

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// SLOT connected to action
void EditorManager::closeEditor()
{
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    if (!m_d->m_currentEditor)
        return;
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    addCurrentPositionToNavigationHistory();
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    closeEditor(m_d->m_currentEditor);
}

void EditorManager::closeEditor(Core::IEditor *editor)
{
    if (!editor)
        return;
    closeEditors(QList<IEditor *>() << editor);
}

void EditorManager::closeEditor(const QModelIndex &index)
{
    IEditor *editor = index.data(Qt::UserRole).value<Core::IEditor*>();
    if (editor)
        closeEditor(editor);
    else
        m_d->m_editorModel->removeEditor(index);
}

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bool EditorManager::closeEditors(const QList<IEditor*> &editorsToClose, bool askAboutModifiedEditors)
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{
    if (editorsToClose.isEmpty())
        return true;
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    SplitterOrView *currentSplitterOrView = this->currentSplitterOrView();
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    bool closingFailed = false;
    QList<IEditor*> acceptedEditors;
    //ask all core listeners to check whether the editor can be closed
    const QList<ICoreListener *> listeners =
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        pluginManager()->getObjects<ICoreListener>();
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    foreach (IEditor *editor, editorsToClose) {
        bool editorAccepted = true;
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        if (m_d->m_editorModel->isDuplicate(editor))
            editor = m_d->m_editorModel->originalForDuplicate(editor);
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        foreach (ICoreListener *listener, listeners) {
            if (!listener->editorAboutToClose(editor)) {
                editorAccepted = false;
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                closingFailed = true;
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                break;
            }
        }
        if (editorAccepted)
            acceptedEditors.append(editor);
    }
    if (acceptedEditors.isEmpty())
        return false;
    //ask whether to save modified files
    if (askAboutModifiedEditors) {
        bool cancelled = false;
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        QList<IFile*> list = m_d->m_core->fileManager()->
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            saveModifiedFiles(filesForEditors(acceptedEditors), &cancelled);
        if (cancelled)
            return false;
        if (!list.isEmpty()) {
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            closingFailed = true;
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            QSet<IEditor*> skipSet = editorsForFiles(list).toSet();
            acceptedEditors = acceptedEditors.toSet().subtract(skipSet).toList();
        }
    }
    if (acceptedEditors.isEmpty())
        return false;
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    // add duplicates
    foreach(IEditor *editor, acceptedEditors)
        acceptedEditors += m_d->m_editorModel->duplicatesFor(editor);

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    QList<EditorView*> closedViews;
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    // remove the editors
    foreach (IEditor *editor, acceptedEditors) {
        emit editorAboutToClose(editor);
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        if (!editor->file()->fileName().isEmpty()
                && !editor->isTemporary()) {
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            QByteArray state = editor->saveState();
            if (!state.isEmpty())
                m_d->m_editorStates.insert(editor->file()->fileName(), QVariant(state));
        }
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        removeEditor(editor);
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        if (SplitterOrView *view = m_d->m_splitter->findView(editor)) {
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            if (editor == view->view()->currentEditor())
                closedViews += view->view();
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            view->view()->removeEditor(editor);
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        }
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    }
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    foreach (EditorView *view, closedViews) {
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        IEditor *newCurrent = view->currentEditor();
        if (!newCurrent)
            newCurrent = pickUnusedEditor();
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        if (newCurrent) {
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            activateEditor(view, newCurrent, NoActivate);
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        } else {
            QModelIndex idx = m_d->m_editorModel->firstRestoredEditor();
            if (idx.isValid())
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                activateEditor(idx, view, NoActivate);
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        }
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    }

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    emit editorsClosed(acceptedEditors);
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    foreach (IEditor *editor, acceptedEditors) {
        delete editor;
    }
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    if (currentSplitterOrView) {
        if (IEditor *editor = currentSplitterOrView->editor())
            activateEditor(currentSplitterOrView->view(), editor);
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    }
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    if (!currentEditor()) {
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        emit currentEditorChanged(0);
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        updateActions();
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        updateWindowTitle();
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    }
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    return !closingFailed;
}

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void EditorManager::closeDuplicate(Core::IEditor *editor)
{

    IEditor *original = editor;
    if (m_d->m_editorModel->isDuplicate(editor))
        original= m_d->m_editorModel->originalForDuplicate(editor);
    QList<IEditor *> duplicates = m_d->m_editorModel->duplicatesFor(original);

    if (duplicates.isEmpty()) {
        closeEditor(editor);
        return;
    }

    if (original== editor)
        m_d->m_editorModel->makeOriginal(duplicates.first());

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    SplitterOrView *currentSplitterOrView = this->currentSplitterOrView();
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    emit editorAboutToClose(editor);

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    if(m_d->m_splitter->findView(editor)) {
        EditorView *view = m_d->m_splitter->findView(editor)->view();
        removeEditor(editor);
        view->removeEditor(editor);
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        IEditor *newCurrent = view->currentEditor();
        if (!newCurrent)
            newCurrent = pickUnusedEditor();
        if (newCurrent) {
            activateEditor(view, newCurrent, NoActivate);
        } else {
            QModelIndex idx = m_d->m_editorModel->firstRestoredEditor();
            if (idx.isValid())
                activateEditor(idx, view, NoActivate);
        }
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    }

    emit editorsClosed(QList<IEditor*>() << editor);
    delete editor;
    if (currentSplitterOrView) {
        if (IEditor *currentEditor = currentSplitterOrView->editor())
            activateEditor(currentSplitterOrView->view(), currentEditor);
    }
}

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Core::IEditor *EditorManager::pickUnusedEditor() const
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{
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    foreach (IEditor *editor, openedEditors()) {
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        SplitterOrView *view = m_d->m_splitter->findView(editor);
        if (!view || view->editor() != editor)
            return editor;
    }
    return 0;
}
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Core::IEditor *EditorManager::activateEditor(const QModelIndex &index, Internal::EditorView *view, OpenEditorFlags flags)
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{
    IEditor *editor = index.data(Qt::UserRole).value<IEditor*>();
    if (editor)  {
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        return activateEditor(view, editor, flags);
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    }

    QString fileName = index.data(Qt::UserRole + 1).toString();
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    QString id = index.data(Qt::UserRole + 2).toString();
    return openEditor(view, fileName, id, flags);
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}

Core::IEditor *EditorManager::placeEditor(Core::Internal::EditorView *view, Core::IEditor *editor)
{
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    Q_ASSERT(view && editor);

    if (view->currentEditor() && view->currentEditor()->file() == editor->file())
        editor = view->currentEditor();

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    if (!view->hasEditor(editor)) {
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        bool duplicateSupported = editor->duplicateSupported();
        if (SplitterOrView *sourceView = m_d->m_splitter->findView(editor)) {
            if (editor != sourceView->editor() || !duplicateSupported) {
                sourceView->view()->removeEditor(editor);
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                view->addEditor(editor);
                view->setCurrentEditor(editor);
                if (!sourceView->editor()) {
                    if (IEditor *replacement = pickUnusedEditor()) {
                        sourceView->view()->addEditor(replacement);
                    }
                }
                return editor;
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            } else if (duplicateSupported) {
                editor = duplicateEditor(editor);
                Q_ASSERT(editor);
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                m_d->m_editorModel->makeOriginal(editor);
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            }
        }
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        view->addEditor(editor);
    }
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    return editor;
}
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Core::IEditor *EditorManager::activateEditor(Core::IEditor *editor, OpenEditorFlags flags)
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{
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    return activateEditor(0, editor, flags);
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}

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Core::IEditor *EditorManager::activateEditor(Core::Internal::EditorView *view, Core::IEditor *editor, OpenEditorFlags flags)
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{
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    if (!view)
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        view = currentEditorView();
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    Q_ASSERT(view);
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    if (!editor) {
        if (!m_d->m_currentEditor)
            setCurrentEditor(0, (flags & IgnoreNavigationHistory));
        return 0;
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    }

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    editor = placeEditor(view, editor);

    if (!(flags & NoActivate)) {
        setCurrentEditor(editor, (flags & IgnoreNavigationHistory));
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        if (flags & ModeSwitch) {
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            switchToPreferedMode();
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        }
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        if (isVisible())
            editor->widget()->setFocus();
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    }
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    return editor;
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}

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Core::IEditor *EditorManager::activateEditor(Core::Internal::EditorView *view, Core::IFile *file, OpenEditorFlags flags)
{
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    const QList<IEditor*> editors = editorsForFile(file);
    if (editors.isEmpty())
        return 0;

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    return activateEditor(view, editors.first(), flags);
}

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/* For something that has a 'QStringList mimeTypes' (IEditorFactory
 * or IExternalEditor), find the one best matching the mimetype passed in.
 *  Recurse over the parent classes of the mimetype to find them. */
template <class EditorFactoryLike>
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static void mimeTypeFactoryRecursion(const MimeDatabase *db,
                                     const MimeType &mimeType,
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                                     const QList<EditorFactoryLike*> &allFactories,
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                                     bool firstMatchOnly,
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                                     QList<EditorFactoryLike*> *list)
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{
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    typedef typename QList<EditorFactoryLike*>::const_iterator EditorFactoryLikeListConstIterator;
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    // Loop factories to find type
    const QString type = mimeType.type();
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    const EditorFactoryLikeListConstIterator fcend = allFactories.constEnd();
    for (EditorFactoryLikeListConstIterator fit = allFactories.constBegin(); fit != fcend; ++fit) {
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        // Exclude duplicates when recursing over xml or C++ -> C -> text.
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        EditorFactoryLike *factory = *fit;
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        if (!list->contains(factory) && factory->mimeTypes().contains(type)) {
            list->push_back(*fit);
            if (firstMatchOnly)
                return;
            break;
        }
    }
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    // Any parent mime type classes? -> recurse
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    QStringList parentTypes = mimeType.subClassesOf();
    if (parentTypes.empty())
        return;
    const QStringList::const_iterator pcend = parentTypes .constEnd();
    for (QStringList::const_iterator pit = parentTypes .constBegin(); pit != pcend; ++pit) {
        if (const MimeType parent = db->findByType(*pit))
            mimeTypeFactoryRecursion(db, parent, allFactories, firstMatchOnly, list);
    }