/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the Qt Designer of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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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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**

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** $QT_END_LICENSE$

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****************************************************************************/

#include <QtDesigner/QDesignerComponents>

#include <actioneditor_p.h>

#include <widgetdatabase_p.h>

#include <widgetfactory_p.h>

#include <formeditor/formeditor.h>

#include <widgetbox/widgetbox.h>

#include <propertyeditor/propertyeditor.h>

#include <objectinspector/objectinspector.h>

#include <taskmenu/taskmenu_component.h>

#include "qtresourceview_p.h"

#include <qdesigner_integration_p.h>

#include <signalsloteditor/signalsloteditorwindow.h>

#include <buddyeditor/buddyeditor_plugin.h>

#include <signalsloteditor/signalsloteditor_plugin.h>

#include <tabordereditor/tabordereditor_plugin.h>

#include <QtDesigner/QDesignerLanguageExtension>

#include <QtDesigner/QExtensionManager>

#include <QtDesigner/QDesignerResourceBrowserInterface>

#include <QtCore/qplugin.h>

#include <QtCore/QDir>

#include <QtCore/QTextStream>

#include <QtCore/QDebug>

#include <QtCore/QFile>

#include <QtCore/QFileInfo>

// ### keep it in sync with Q_IMPORT_PLUGIN in qplugin.h

#define DECLARE_PLUGIN_INSTANCE(PLUGIN) \

    extern QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGIN(); \

    class Static##PLUGIN##PluginInstance { public: \

        Static##PLUGIN##PluginInstance() {                      \

            QT_PREPEND_NAMESPACE(qRegisterStaticPluginInstanceFunction) \

                (&qt_plugin_instance_##PLUGIN); \

        } \

    };

#define INIT_PLUGIN_INSTANCE(PLUGIN) \

    do { \

        Static##PLUGIN##PluginInstance instance; \

        Q_UNUSED(instance); \

    } while (0)

DECLARE_PLUGIN_INSTANCE(SignalSlotEditorPlugin)

DECLARE_PLUGIN_INSTANCE(BuddyEditorPlugin)

DECLARE_PLUGIN_INSTANCE(TabOrderEditorPlugin)

static void initResources()

{

    // Q_INIT_RESOURCE only usable in functions in global namespace

    Q_INIT_RESOURCE(formeditor);

    Q_INIT_RESOURCE(widgetbox);

    Q_INIT_RESOURCE(propertyeditor);

}

static void initInstances()

{

    static bool plugins_initialized = false;

    if (!plugins_initialized) {

        INIT_PLUGIN_INSTANCE(SignalSlotEditorPlugin);

        INIT_PLUGIN_INSTANCE(BuddyEditorPlugin);

        INIT_PLUGIN_INSTANCE(TabOrderEditorPlugin);

        plugins_initialized = true;

    }

}

QT_BEGIN_NAMESPACE

/*!

    \class QDesignerComponents

    \brief The QDesignerComponents class provides a central resource for the various components

    used in the \QD user interface.

    \inmodule QtDesigner

    \internal

    The QDesignerComponents class is a factory for each of the standard components present

    in the \QD user interface. It is mostly useful for developers who want to implement

    a standalone form editing environment using \QD's components, or who need to integrate

    \QD's components into an existing integrated development environment (IDE).

    \sa QDesignerFormEditorInterface, QDesignerObjectInspectorInterface,

        QDesignerPropertyEditorInterface, QDesignerWidgetBoxInterface

*/

/*!

    Initializes the resources used by the components.*/

void QDesignerComponents::initializeResources()

{

    initResources();

}

/*!

    Initializes the plugins used by the components.*/

void QDesignerComponents::initializePlugins(QDesignerFormEditorInterface *core)

{

    qdesigner_internal::QDesignerIntegration::initializePlugins(core);

}

/*!

    Constructs a form editor interface with the given \a parent.*/

QDesignerFormEditorInterface *QDesignerComponents::createFormEditor(QObject *parent)

{

    initInstances();

    return new qdesigner_internal::FormEditor(parent);

}

/*!

    Returns a new task menu with the given \a parent for the \a core interface.*/

QObject *QDesignerComponents::createTaskMenu(QDesignerFormEditorInterface *core, QObject *parent)

{

    return new qdesigner_internal::TaskMenuComponent(core, parent);

}

static inline int qtMajorVersion(int qtVersion) { return qtVersion >> 16; }

static inline int qtMinorVersion(int qtVersion) { return (qtVersion >> 8) & 0xFF; }

static inline void setMinorVersion(int minorVersion, int *qtVersion)

{

    *qtVersion &= ~0xFF00;

    *qtVersion |= minorVersion << 8;

}

// Build the version-dependent name of the user widget box file, '$HOME.designer/widgetbox4.4.xml'

static inline QString widgetBoxFileName(int qtVersion, const QDesignerLanguageExtension *lang = 0)

{

    QString rc; {

        const QChar dot = QLatin1Char('.');

        QTextStream str(&rc);

        str << QDir::homePath() << QDir::separator() << QLatin1String(".designer") << QDir::separator()

            << QLatin1String("widgetbox");

        // The naming convention using the version was introduced with 4.4

        const int major = qtMajorVersion(qtVersion);

        const int minor = qtMinorVersion(qtVersion);

        if (major >= 4 &&  minor >= 4)

            str << major << dot << minor;

        if (lang)

            str << dot << lang->uiExtension();

        str << QLatin1String(".xml");

    }

    return rc;

}

/*!

    Returns a new widget box interface with the given \a parent for the \a core interface.*/

QDesignerWidgetBoxInterface *QDesignerComponents::createWidgetBox(QDesignerFormEditorInterface *core, QWidget *parent)

{

    qdesigner_internal::WidgetBox *widgetBox = new qdesigner_internal::WidgetBox(core, parent);

    const QDesignerLanguageExtension *lang = qt_extension<QDesignerLanguageExtension*>(core->extensionManager(), core);

    do {

        if (lang) {

            const QString languageWidgetBox = lang->widgetBoxContents();

            if (!languageWidgetBox.isEmpty()) {

                widgetBox->loadContents(lang->widgetBoxContents());

                break;

            }

        }

        widgetBox->setFileName(QLatin1String(":/trolltech/widgetbox/widgetbox.xml"));

        widgetBox->load();

    } while (false);

    const QString userWidgetBoxFile = widgetBoxFileName(QT_VERSION, lang);

    widgetBox->setFileName(userWidgetBoxFile);

    if (!QFileInfo(userWidgetBoxFile).exists()) {

        // check previous version, that is, are we running the new version for the first time

        // If so, try to copy the old widget box file

        if (const int minv = qtMinorVersion(QT_VERSION)) {

            int oldVersion = QT_VERSION;

            setMinorVersion(minv - 1, &oldVersion);

            const QString oldWidgetBoxFile = widgetBoxFileName(oldVersion, lang);

            if (QFileInfo(oldWidgetBoxFile).exists())

                QFile::copy(oldWidgetBoxFile, userWidgetBoxFile);

        }

    }

    widgetBox->load();

    return widgetBox;

}

/*!

    Returns a new property editor interface with the given \a parent for the \a core interface.*/

QDesignerPropertyEditorInterface *QDesignerComponents::createPropertyEditor(QDesignerFormEditorInterface *core, QWidget *parent)

{

    return new qdesigner_internal::PropertyEditor(core, parent);

}

/*!

    Returns a new object inspector interface with the given \a parent for the \a core interface.*/

QDesignerObjectInspectorInterface *QDesignerComponents::createObjectInspector(QDesignerFormEditorInterface *core, QWidget *parent)

{

    return new qdesigner_internal::ObjectInspector(core, parent);

}

/*!

    Returns a new action editor interface with the given \a parent for the \a core interface.*/

QDesignerActionEditorInterface *QDesignerComponents::createActionEditor(QDesignerFormEditorInterface *core, QWidget *parent)

{

    return new qdesigner_internal::ActionEditor(core, parent);

}

/*!

    Returns a new resource editor with the given \a parent for the \a core interface.*/

QWidget *QDesignerComponents::createResourceEditor(QDesignerFormEditorInterface *core, QWidget *parent)

{

    if (QDesignerLanguageExtension *lang = qt_extension<QDesignerLanguageExtension*>(core->extensionManager(), core)) {

        QWidget *w = lang->createResourceBrowser(parent);

        if (w)

            return w;

    }

    QtResourceView *resourceView = new QtResourceView(core, parent);

    resourceView->setResourceModel(core->resourceModel());

    resourceView->setSettingsKey(QLatin1String("ResourceBrowser"));

    qdesigner_internal::QDesignerIntegration *designerIntegration = qobject_cast<qdesigner_internal::QDesignerIntegration *>(core->integration());

    // Note for integrators: make sure you call createResourceEditor() after you instantiated your subclass of designer integration

    // (designer doesn't do that since by default editing resources is enabled)

    if (designerIntegration)

        resourceView->setResourceEditingEnabled(designerIntegration->isResourceEditingEnabled());

    return resourceView;

}

/*!

    Returns a new signal-slot editor with the given \a parent for the \a core interface.*/

QWidget *QDesignerComponents::createSignalSlotEditor(QDesignerFormEditorInterface *core, QWidget *parent)

{

    return new qdesigner_internal::SignalSlotEditorWindow(core, parent);

}

QT_END_NAMESPACE