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+/**************************************************************************
+**
+** This file is part of Qt SDK**
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).*
+**
+** Contact:  Nokia Corporation qt-info@nokia.com**
+**
+** GNU Lesser General Public License Usage
+**
+** 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.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception version
+** 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you are unsure which license is appropriate for your use, please contact
+** (qt-info@nokia.com).
+**
+**************************************************************************/
+#ifndef QINSTALLER_GUI_H
+#define QINSTALLER_GUI_H
+
+#include <QtGui/QWizard>
+#include <QtCore/QMetaType>
+
+#include <KDToolsCore/pimpl_ptr>
+
+#include "qinstaller.h"
+#include "messageboxhandler.h"
+
+// FIXME: move to private classes
+class QCheckBox;
+class QLabel;
+class QLineEdit;
+class QListWidget;
+class QListWidgetItem;
+class QProgressBar;
+class QRadioButton;
+class QTextBrowser;
+class QTreeView;
+class QScriptEngine;
+
+namespace QInstaller {
+
+class Installer;
+class Page;
+class IntroductionPage;
+class PerformInstallationForm;
+
+class INSTALLER_EXPORT MessageBoxHandlerImpl : public MessageBoxHandler {
+public:
+    explicit MessageBoxHandlerImpl( QWidget* parentWidget );
+    void setAutomaticAnswer( const QString& identifier, QMessageBox::StandardButton answer );
+    void setDefaultAction( DefaultAction da );
+
+    QMessageBox::StandardButton critical( const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton information( const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton question( const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Yes|QMessageBox::No, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton warning( const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton critical( QWidget* parent, const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton information( QWidget* parent, const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton question( QWidget* parent, const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Yes|QMessageBox::No, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+    QMessageBox::StandardButton warning( QWidget* parent, const QString& identifier, const QString& title, const QString& text, QMessageBox::StandardButtons buttons=QMessageBox::Ok, QMessageBox::StandardButton button=QMessageBox::NoButton ) const;
+
+private:
+    QMessageBox::StandardButton autoReply( QMessageBox::StandardButtons buttons ) const;
+
+private:
+    QList<QMessageBox::Button> m_buttonOrder;
+    QWidget* m_parentWidget;
+    DefaultAction m_defaultAction;
+    QHash<QString,QMessageBox::StandardButton> m_automaticAnswers;
+};
+
+class INSTALLER_EXPORT Gui : public QWizard
+{
+    Q_OBJECT
+
+public:
+    explicit Gui(Installer *installer, QWidget *parent = 0);
+    ~Gui();
+    virtual void init() = 0;
+    IntroductionPage* introductionPage() const;
+
+    void loadControlScript( const QString& scriptPath );
+    void callControlScriptMethod( const QString& methodName );
+    void triggerControlScriptForCurrentPage();
+
+    QScriptEngine* controlScriptEngine() const;
+
+    Q_INVOKABLE QWidget* pageWidgetByObjectName( const QString& name ) const;
+    Q_INVOKABLE QWidget* currentPageWidget() const;
+    Q_INVOKABLE void clickButton( int wizardButton, int delayInMs=0 );
+
+Q_SIGNALS:
+    void interrupted();
+    void languageChanged();
+    void finishButtonClicked();
+    void gotRestarted();
+
+public slots:
+    void cancelButtonClicked();
+    void reject();
+    void rejectWithoutPrompt();
+    void showFinishedPage();
+    void setModified( bool value );
+
+protected Q_SLOTS:
+    void wizardPageInsertionRequested( QWidget* widget, Installer::WizardPage page );
+    void wizardPageRemovalRequested( QWidget* widget );
+    void wizardWidgetInsertionRequested( QWidget* widget, Installer::WizardPage page );
+    void wizardWidgetRemovalRequested( QWidget* widget );
+    void wizardPageVisibilityChangeRequested( bool visible, int page );
+    void slotCurrentPageChanged( int id );
+    void delayedControlScriptExecution( int id );
+
+    void setAutomatedPageSwitchEnabled( bool request );
+
+protected:
+    bool event( QEvent* event );
+    Installer *m_installer;
+
+
+private:
+    class Private;
+    Private* const d;
+    QInstaller::IntroductionPage *m_introPage;
+    QMap< int, QWizardPage* > defaultPages;
+};
+
+
+class INSTALLER_EXPORT Page : public QWizardPage
+{
+    Q_OBJECT
+
+public:
+    explicit Page(Installer *installer);
+
+    virtual bool isInterruptible() const { return false; }
+    virtual QPixmap watermarkPixmap() const;
+    virtual QPixmap logoPixmap() const;
+    virtual QString productName() const;
+
+    virtual bool isComplete() const;
+    void setComplete(bool complete);
+
+protected:
+    Installer *installer() const;
+
+    // Inserts widget into the same layout like a sibling identified
+    // by its name. Default position is just behind the sibling.
+    virtual void insertWidget(QWidget *widget, const QString &siblingName,
+        int offset = 1);
+    virtual QWidget *findWidget(const QString &objectName) const;
+
+    virtual void setVisible(bool visible); // reimp
+    virtual int nextId() const; // reimp
+
+    virtual void entering() {} // called on entering
+    virtual void leaving() {}  // called on leaving
+
+    virtual void forward() const {} // called when going forwards
+    //virtual void backward() const {}  // called when going back
+    bool isConstructing() const { return m_fresh; }
+
+private:
+    Installer *m_installer;
+    bool m_fresh;
+    bool m_complete;
+};
+
+
+class INSTALLER_EXPORT IntroductionPage : public Page
+{
+    Q_OBJECT
+public:
+    explicit IntroductionPage(Installer *installer);
+    void setText(const QString &text);
+    void setWidget(QWidget *w);
+private:
+    QLabel *m_msgLabel;
+    QWidget *m_widget;
+};
+
+
+class INSTALLER_EXPORT LicenseAgreementPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit LicenseAgreementPage(Installer *installer);
+    void initializePage();
+    bool isComplete() const;
+
+private Q_SLOTS:
+    void openLicenseUrl(const QUrl &url);
+    void currentItemChanged(QListWidgetItem *current);
+
+private:
+    void addLicenseItem(const QHash<QString, QPair<QString, QString> > &hash);
+
+private:
+    QTextBrowser *m_textBrowser;
+    QListWidget *m_licenseListWidget;
+
+    QRadioButton *m_acceptRadioButton;
+    QRadioButton *m_rejectRadioButton;
+};
+
+
+class INSTALLER_EXPORT ComponentSelectionPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit ComponentSelectionPage(Installer *installer);
+    ~ComponentSelectionPage();
+    bool isComplete() const;
+
+    Q_INVOKABLE void selectComponent( const QString& id );
+    Q_INVOKABLE void deselectComponent( const QString& id );
+
+protected:
+    void showEvent( QShowEvent* event );
+    void entering();
+private Q_SLOTS:
+    void setModified( bool value );
+    void modelWasReseted();
+
+private:
+    class Private;
+    kdtools::pimpl_ptr< Private > d;
+};
+
+class INSTALLER_EXPORT TargetDirectoryPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit TargetDirectoryPage(Installer *installer);
+    QString targetDir() const;
+    void setTargetDir(const QString &dirName);
+
+    void initializePage();
+    bool validatePage();
+
+protected:
+    void entering();
+    void leaving();
+
+private Q_SLOTS:
+    void targetDirSelected();
+    void dirRequested();
+
+private:
+    QLineEdit *m_lineEdit;
+};
+
+
+class INSTALLER_EXPORT StartMenuDirectoryPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit StartMenuDirectoryPage(Installer *installer);
+
+    QString startMenuDir() const;
+    void setStartMenuDir(const QString &startMenuDir);
+
+protected:
+    void leaving();
+
+private Q_SLOTS:
+    void currentItemChanged(QListWidgetItem* current);
+
+private:
+    QString startMenuPath;
+    QLineEdit   *m_lineEdit;
+    QListWidget *m_listWidget;
+};
+
+
+class INSTALLER_EXPORT ReadyForInstallationPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit ReadyForInstallationPage(Installer *installer);
+    void initializePage();
+    void entering();
+    bool isComplete() const;
+
+private:
+    QLabel* const msgLabel;
+};
+
+
+class INSTALLER_EXPORT PerformInstallationPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit PerformInstallationPage(Installer *installer);
+    ~PerformInstallationPage();
+    bool isAutoSwitching() const;
+
+protected:
+    void entering();
+    void initializePage();
+    bool isInterruptible() const { return true; }
+
+public Q_SLOTS:
+    void setTitleMessage( const QString& title );
+
+Q_SIGNALS:
+    void installationRequested();
+    void setAutomatedPageSwitchEnabled( bool request );
+
+private Q_SLOTS:
+    void installationStarted();
+    void installationFinished();
+    void toggleDetailsWereChanged();
+
+private:
+    QString m_commitBtnText;
+    PerformInstallationForm *m_performInstallationForm;
+};
+
+class INSTALLER_EXPORT FinishedPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit FinishedPage(Installer *installer);
+
+Q_SIGNALS:
+    void finishClicked();
+
+public Q_SLOTS:
+    void handleFinishClicked();
+
+protected:
+    void initializePage();
+    void entering();
+    void leaving();
+
+private:
+    QLabel *m_msgLabel;
+    QCheckBox *m_runItCheckBox;
+};
+
+class INSTALLER_EXPORT RestartPage : public Page
+{
+    Q_OBJECT
+
+public:
+    explicit RestartPage(Installer *installer);
+
+protected:
+    void entering();
+    void leaving();
+Q_SIGNALS:
+    void restart();
+};
+
+} //namespace QInstaller
+
+#endif // QINSTALLER_GUI_H