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**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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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
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****************************************************************************/

#ifndef DESIGNMODEWIDGET_H
#define DESIGNMODEWIDGET_H

#include <coreplugin/minisplitter.h>
#include <utils/faketooltip.h>

#include <designdocument.h>
#include <modelnode.h>

#include <QWidget>
#include <QLabel>
#include <QScopedPointer>

QT_BEGIN_NAMESPACE
class QStackedWidget;
class QTabWidget;
class QVBoxLayout;
class QToolButton;
QT_END_NAMESPACE

namespace Core {
    class SideBar;
    class SideBarItem;
    class EditorToolBar;
    class OutputPanePlaceHolder;
}

namespace QmlDesigner {

class ItemLibraryWidget;
class CrumbleBar;

namespace Internal {

class DesignMode;
class DocumentWidget;
class DesignModeWidget;

class DocumentWarningWidget : public Utils::FakeToolTip
{
    Q_OBJECT

public:
    explicit DocumentWarningWidget(DesignModeWidget *parent = 0);

    void setError(const RewriterView::Error &error);

private slots:
    void goToError();

private:
    QLabel *m_errorMessage;
    QLabel *m_goToError;
    RewriterView::Error m_error;
    DesignModeWidget *m_designModeWidget;
};

class DesignModeWidget : public QWidget
{
    Q_OBJECT

public:
    explicit DesignModeWidget(QWidget *parent = 0);

    ~DesignModeWidget();
    QString contextHelpId() const;

    void initialize();

    void readSettings();
    void saveSettings();

    TextEditor::ITextEditor *textEditor() const;

    DesignDocument *currentDesignDocument() const;
    ViewManager &viewManager();

    void setupNavigatorHistory(Core::IEditor *editor);

    void enableWidgets();
    void disableWidgets();
    void showErrorMessage(const QList<RewriterView::Error> &errors);

    CrumbleBar* crumbleBar() const;

public slots:
    void updateErrorStatus(const QList<RewriterView::Error> &errors);
    void restoreDefaultView();
    void toggleSidebars();
    void toggleLeftSidebar();
    void toggleRightSidebar();

private slots:
    void updateAvailableSidebarItemsLeft();
    void updateAvailableSidebarItemsRight();

    void deleteSidebarWidgets();
    void qmlPuppetCrashed();

    void toolBarOnGoBackClicked();
    void toolBarOnGoForwardClicked();

protected:
    void resizeEvent(QResizeEvent *event);

private: // functions
    enum InitializeStatus { NotInitialized, Initializing, Initialized };

    void setCurrentDesignDocument(DesignDocument *newDesignDocument);
    void setup();
    bool isInNodeDefinition(int nodeOffset, int nodeLength, int cursorPos) const;
    QmlDesigner::ModelNode nodeForPosition(int cursorPos) const;
    void addNavigatorHistoryEntry(const QString &fileName);
    QWidget *createCenterWidget();
    QWidget *createCrumbleBarFrame();

private: // variables
    QSplitter *m_mainSplitter;
    QScopedPointer<Core::SideBar> m_leftSideBar;
    QScopedPointer<Core::SideBar> m_rightSideBar;
    QPointer<QWidget> m_topSideBar;
    Core::EditorToolBar *m_toolBar;
    CrumbleBar *m_crumbleBar;
    bool m_isDisabled;
    bool m_showSidebars;

    InitializeStatus m_initStatus;

    DocumentWarningWidget *m_warningWidget;
    QStringList m_navigatorHistory;
    int m_navigatorHistoryCounter;
    bool m_keepNavigatorHistory;
};

} // namespace Internal
} // namespace Designer

#endif // DESIGNMODEWIDGET_H