/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** 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.
**
** GNU Lesser General Public License Usage
** 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.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/


#include "quiloader.h"
#include "quiloader_p.h"
#include "customwidget.h"

#include <formbuilder.h>
#include <formbuilderextra_p.h>
#include <textbuilder_p.h>
#include <ui4_p.h>

#include <QtCore/qdebug.h>
#include <QtGui/QAction>
#include <QtGui/QActionGroup>
#include <QtGui/QApplication>
#include <QtCore/QDir>
#include <QtCore/QLibraryInfo>
#include <QtGui/QLayout>
#include <QtGui/QWidget>
#include <QtCore/QMap>
#include <QtGui/QTabWidget>
#include <QtGui/QTreeWidget>
#include <QtGui/QListWidget>
#include <QtGui/QTableWidget>
#include <QtGui/QToolBox>
#include <QtGui/QComboBox>
#include <QtGui/QFontComboBox>

QT_BEGIN_NAMESPACE

typedef QMap<QString, bool> widget_map;
Q_GLOBAL_STATIC(widget_map, g_widgets)

class QUiLoader;
class QUiLoaderPrivate;

#ifdef QFORMINTERNAL_NAMESPACE
namespace QFormInternal
{
#endif

class TranslatingTextBuilder : public QTextBuilder
{
public:
    TranslatingTextBuilder(bool trEnabled, const QByteArray &className) :
        m_trEnabled(trEnabled), m_className(className) {}

    virtual QVariant loadText(const DomProperty *icon) const;

    virtual QVariant toNativeValue(const QVariant &value) const;

private:
    bool m_trEnabled;
    QByteArray m_className;
};

QVariant TranslatingTextBuilder::loadText(const DomProperty *text) const
{
    const DomString *str = text->elementString();
    if (!str)
        return QVariant();
    if (str->hasAttributeNotr()) {
        const QString notr = str->attributeNotr();
        if (notr == QLatin1String("true") || notr == QLatin1String("yes"))
            return qVariantFromValue(str->text());
    }
    QUiTranslatableStringValue strVal;
    strVal.setValue(str->text().toUtf8());
    if (str->hasAttributeComment())
        strVal.setComment(str->attributeComment().toUtf8());
    return qVariantFromValue(strVal);
}

QVariant TranslatingTextBuilder::toNativeValue(const QVariant &value) const
{
    if (qVariantCanConvert<QUiTranslatableStringValue>(value)) {
        QUiTranslatableStringValue tsv = qVariantValue<QUiTranslatableStringValue>(value);
        if (!m_trEnabled)
            return QString::fromUtf8(tsv.value().data());
        return qVariantFromValue(
            QApplication::translate(m_className, tsv.value(), tsv.comment(),
                                    QCoreApplication::UnicodeUTF8));
    }
    if (qVariantCanConvert<QString>(value))
        return qVariantFromValue(qVariantValue<QString>(value));
    return value;
}

// This is "exported" to linguist
const QUiItemRolePair qUiItemRoles[] = {
    { Qt::DisplayRole, Qt::DisplayPropertyRole },
#ifndef QT_NO_TOOLTIP
    { Qt::ToolTipRole, Qt::ToolTipPropertyRole },
#endif
#ifndef QT_NO_STATUSTIP
    { Qt::StatusTipRole, Qt::StatusTipPropertyRole },
#endif
#ifndef QT_NO_WHATSTHIS
    { Qt::WhatsThisRole, Qt::WhatsThisPropertyRole },
#endif
    { -1 , -1 }
};

static void recursiveReTranslate(QTreeWidgetItem *item, const QByteArray &class_name)
{
    const QUiItemRolePair *irs = qUiItemRoles;

    int cnt = item->columnCount();
    for (int i = 0; i < cnt; ++i) {
        for (unsigned j = 0; irs[j].shadowRole >= 0; j++) {
            QVariant v = item->data(i, irs[j].shadowRole);
            if (v.isValid()) {
                QUiTranslatableStringValue tsv = qVariantValue<QUiTranslatableStringValue>(v);
                const QString text = QApplication::translate(class_name,
                                                             tsv.value(), tsv.comment(),
                                                             QCoreApplication::UnicodeUTF8);
                item->setData(i, irs[j].realRole, text);
            }
        }
    }

    cnt = item->childCount();
    for (int i = 0; i < cnt; ++i)
        recursiveReTranslate(item->child(i), class_name);
}

template<typename T>
static void reTranslateWidgetItem(T *item, const QByteArray &class_name)
{
    const QUiItemRolePair *irs = qUiItemRoles;

    for (unsigned j = 0; irs[j].shadowRole >= 0; j++) {
        QVariant v = item->data(irs[j].shadowRole);
        if (v.isValid()) {
            QUiTranslatableStringValue tsv = qVariantValue<QUiTranslatableStringValue>(v);
            const QString text = QApplication::translate(class_name,
                                                         tsv.value(), tsv.comment(),
                                                         QCoreApplication::UnicodeUTF8);
            item->setData(irs[j].realRole, text);
        }
    }
}

static void reTranslateTableItem(QTableWidgetItem *item, const QByteArray &class_name)
{
    if (item)
        reTranslateWidgetItem(item, class_name);
}

#define RETRANSLATE_SUBWIDGET_PROP(mainWidget, setter, propName) \
    do { \
        QVariant v = mainWidget->widget(i)->property(propName); \
        if (v.isValid()) { \
            QUiTranslatableStringValue tsv = qVariantValue<QUiTranslatableStringValue>(v); \
            const QString text = QApplication::translate(m_className, \
                                                         tsv.value(), tsv.comment(), \
                                                         QCoreApplication::UnicodeUTF8); \
            mainWidget->setter(i, text); \
        } \
    } while (0)

class TranslationWatcher: public QObject
{
    Q_OBJECT

public:
    TranslationWatcher(QObject *parent, const QByteArray &className):
        QObject(parent),
        m_className(className)
    {
    }

    virtual bool eventFilter(QObject *o, QEvent *event)
    {
        if (event->type() == QEvent::LanguageChange) {
            foreach (const QByteArray &prop, o->dynamicPropertyNames()) {
                if (prop.startsWith(PROP_GENERIC_PREFIX)) {
                    const QByteArray propName = prop.mid(sizeof(PROP_GENERIC_PREFIX) - 1);
                    const QUiTranslatableStringValue tsv =
                                qVariantValue<QUiTranslatableStringValue>(o->property(prop));
                    const QString text = QApplication::translate(m_className,
                                                                 tsv.value(), tsv.comment(),
                                                                 QCoreApplication::UnicodeUTF8);
                    o->setProperty(propName, text);
                }
            }
            if (0) {
#ifndef QT_NO_TABWIDGET
            } else if (QTabWidget *tabw = qobject_cast<QTabWidget*>(o)) {
                const int cnt = tabw->count();
                for (int i = 0; i < cnt; ++i) {
                    RETRANSLATE_SUBWIDGET_PROP(tabw, setTabText, PROP_TABPAGETEXT);
# ifndef QT_NO_TOOLTIP
                    RETRANSLATE_SUBWIDGET_PROP(tabw, setTabToolTip, PROP_TABPAGETOOLTIP);
# endif
# ifndef QT_NO_WHATSTHIS
                    RETRANSLATE_SUBWIDGET_PROP(tabw, setTabWhatsThis, PROP_TABPAGEWHATSTHIS);
# endif
                }
#endif
#ifndef QT_NO_LISTWIDGET
            } else if (QListWidget *listw = qobject_cast<QListWidget*>(o)) {
                const int cnt = listw->count();
                for (int i = 0; i < cnt; ++i)
                    reTranslateWidgetItem(listw->item(i), m_className);
#endif
#ifndef QT_NO_TREEWIDGET
            } else if (QTreeWidget *treew = qobject_cast<QTreeWidget*>(o)) {
                if (QTreeWidgetItem *item = treew->headerItem())
                    recursiveReTranslate(item, m_className);
                const int cnt = treew->topLevelItemCount();
                for (int i = 0; i < cnt; ++i) {
                    QTreeWidgetItem *item = treew->topLevelItem(i);
                    recursiveReTranslate(item, m_className);
                }
#endif
#ifndef QT_NO_TABLEWIDGET
            } else if (QTableWidget *tablew = qobject_cast<QTableWidget*>(o)) {
                const int row_cnt = tablew->rowCount();
                const int col_cnt = tablew->columnCount();
                for (int j = 0; j < col_cnt; ++j)
                    reTranslateTableItem(tablew->verticalHeaderItem(j), m_className);
                for (int i = 0; i < row_cnt; ++i) {
                    reTranslateTableItem(tablew->horizontalHeaderItem(i), m_className);
                    for (int j = 0; j < col_cnt; ++j)
                        reTranslateTableItem(tablew->item(i, j), m_className);
                }
#endif
#ifndef QT_NO_COMBOBOX
            } else if (QComboBox *combow = qobject_cast<QComboBox*>(o)) {
                if (!qobject_cast<QFontComboBox*>(o)) {
                    const int cnt = combow->count();
                    for (int i = 0; i < cnt; ++i) {
                        const QVariant v = combow->itemData(i, Qt::DisplayPropertyRole);
                        if (v.isValid()) {
                            QUiTranslatableStringValue tsv = qVariantValue<QUiTranslatableStringValue>(v);
                            const QString text = QApplication::translate(m_className,
                                                                         tsv.value(), tsv.comment(),
                                                                         QCoreApplication::UnicodeUTF8);
                            combow->setItemText(i, text);
                        }
                    }
                }
#endif
#ifndef QT_NO_TOOLBOX
            } else if (QToolBox *toolw = qobject_cast<QToolBox*>(o)) {
                const int cnt = toolw->count();
                for (int i = 0; i < cnt; ++i) {
                    RETRANSLATE_SUBWIDGET_PROP(toolw, setItemText, PROP_TOOLITEMTEXT);
# ifndef QT_NO_TOOLTIP
                    RETRANSLATE_SUBWIDGET_PROP(toolw, setItemToolTip, PROP_TOOLITEMTOOLTIP);
# endif
                }
#endif
            }
        }
        return false;
    }

private:
    QByteArray m_className;
};

class FormBuilderPrivate: public QFormBuilder
{
    friend class QT_PREPEND_NAMESPACE(QUiLoader);
    friend class QT_PREPEND_NAMESPACE(QUiLoaderPrivate);
    typedef QFormBuilder ParentClass;

public:
    QUiLoader *loader;

    bool dynamicTr;
    bool trEnabled;

    FormBuilderPrivate(): loader(0), dynamicTr(false), trEnabled(true), m_trwatch(0) {}

    QWidget *defaultCreateWidget(const QString &className, QWidget *parent, const QString &name)
    {
        return ParentClass::createWidget(className, parent, name);
    }

    QLayout *defaultCreateLayout(const QString &className, QObject *parent, const QString &name)
    {
        return ParentClass::createLayout(className, parent, name);
    }

    QAction *defaultCreateAction(QObject *parent, const QString &name)
    {
        return ParentClass::createAction(parent, name);
    }

    QActionGroup *defaultCreateActionGroup(QObject *parent, const QString &name)
    {
        return ParentClass::createActionGroup(parent, name);
    }

    virtual QWidget *createWidget(const QString &className, QWidget *parent, const QString &name)
    {
        if (QWidget *widget = loader->createWidget(className, parent, name)) {
            widget->setObjectName(name);
            return widget;
        }

        return 0;
    }

    virtual QLayout *createLayout(const QString &className, QObject *parent, const QString &name)
    {
        if (QLayout *layout = loader->createLayout(className, parent, name)) {
            layout->setObjectName(name);
            return layout;
        }

        return 0;
    }

    virtual QActionGroup *createActionGroup(QObject *parent, const QString &name)
    {
        if (QActionGroup *actionGroup = loader->createActionGroup(parent, name)) {
            actionGroup->setObjectName(name);
            return actionGroup;
        }

        return 0;
    }

    virtual QAction *createAction(QObject *parent, const QString &name)
    {
        if (QAction *action = loader->createAction(parent, name)) {
            action->setObjectName(name);
            return action;
        }

        return 0;
    }

    virtual void applyProperties(QObject *o, const QList<DomProperty*> &properties);
    virtual QWidget *create(DomUI *ui, QWidget *parentWidget);
    virtual QWidget *create(DomWidget *ui_widget, QWidget *parentWidget);
    virtual bool addItem(DomWidget *ui_widget, QWidget *widget, QWidget *parentWidget);

private:
    QByteArray m_class;
    TranslationWatcher *m_trwatch;
};

static QString convertTranslatable(const DomProperty *p, const QByteArray &className,
    QUiTranslatableStringValue *strVal)
{
    if (p->kind() != DomProperty::String)
        return QString();
    const DomString *dom_str = p->elementString();
    if (!dom_str)
        return QString();
    if (dom_str->hasAttributeNotr()) {
        const QString notr = dom_str->attributeNotr();
        if (notr == QLatin1String("yes") || notr == QLatin1String("true"))
            return QString();
    }
    strVal->setValue(dom_str->text().toUtf8());
    strVal->setComment(dom_str->attributeComment().toUtf8());
    if (strVal->value().isEmpty() && strVal->comment().isEmpty())
        return QString();
    return QApplication::translate(className,
                                   strVal->value(), strVal->comment(),
                                   QCoreApplication::UnicodeUTF8);
}

void FormBuilderPrivate::applyProperties(QObject *o, const QList<DomProperty*> &properties)
{
    typedef QList<DomProperty*> DomPropertyList;

    QFormBuilder::applyProperties(o, properties);

    if (!m_trwatch)
        m_trwatch = new TranslationWatcher(o, m_class);

    if (properties.empty())
        return;

    // Unlike string item roles, string properties are not loaded via the textBuilder
    // (as they are "shadowed" by the property sheets in designer). So do the initial
    // translation here.
    bool anyTrs = false;
    foreach (const DomProperty *p, properties) {
        QUiTranslatableStringValue strVal;
        const QString text = convertTranslatable(p, m_class, &strVal);
        if (text.isEmpty())
            continue;
        const QByteArray name = p->attributeName().toUtf8();
        if (dynamicTr) {
            o->setProperty(PROP_GENERIC_PREFIX + name, qVariantFromValue(strVal));
            anyTrs = trEnabled;
        }
        o->setProperty(name, text);
    }
    if (anyTrs)
        o->installEventFilter(m_trwatch);
}

QWidget *FormBuilderPrivate::create(DomUI *ui, QWidget *parentWidget)
{
    m_class = ui->elementClass().toUtf8();
    m_trwatch = 0;
    setTextBuilder(new TranslatingTextBuilder(trEnabled, m_class));
    return QFormBuilder::create(ui, parentWidget);
}

QWidget *FormBuilderPrivate::create(DomWidget *ui_widget, QWidget *parentWidget)
{
    QWidget *w = QFormBuilder::create(ui_widget, parentWidget);
    if (w == 0)
        return 0;

    if (0) {
#ifndef QT_NO_TABWIDGET
    } else if (qobject_cast<QTabWidget*>(w)) {
#endif
#ifndef QT_NO_LISTWIDGET
    } else if (qobject_cast<QListWidget*>(w)) {
#endif
#ifndef QT_NO_TREEWIDGET
    } else if (qobject_cast<QTreeWidget*>(w)) {
#endif
#ifndef QT_NO_TABLEWIDGET
    } else if (qobject_cast<QTableWidget*>(w)) {
#endif
#ifndef QT_NO_COMBOBOX
    } else if (qobject_cast<QComboBox*>(w)) {
        if (qobject_cast<QFontComboBox*>(w))
            return w;
#endif
#ifndef QT_NO_TOOLBOX
    } else if (qobject_cast<QToolBox*>(w)) {
#endif
    } else {
        return w;
    }
    if (dynamicTr && trEnabled)
        w->installEventFilter(m_trwatch);
    return w;
}

#define TRANSLATE_SUBWIDGET_PROP(mainWidget, attribute, setter, propName) \
    do { \
        if (const DomProperty *p##attribute = attributes.value(strings.attribute)) { \
            QUiTranslatableStringValue strVal; \
            const QString text = convertTranslatable(p##attribute, m_class, &strVal); \
            if (!text.isEmpty()) { \
                if (dynamicTr) \
                    mainWidget->widget(i)->setProperty(propName, qVariantFromValue(strVal)); \
                mainWidget->setter(i, text); \
            } \
        } \
    } while (0)

bool FormBuilderPrivate::addItem(DomWidget *ui_widget, QWidget *widget, QWidget *parentWidget)
{
    if (parentWidget == 0)
        return true;

    if (!ParentClass::addItem(ui_widget, widget, parentWidget))
        return false;

    // Check special cases. First: Custom container
    const QString className = QLatin1String(parentWidget->metaObject()->className());
    if (!QFormBuilderExtra::instance(this)->customWidgetAddPageMethod(className).isEmpty())
        return true;

    const QFormBuilderStrings &strings = QFormBuilderStrings::instance();

    if (0) {
#ifndef QT_NO_TABWIDGET
    } else if (QTabWidget *tabWidget = qobject_cast<QTabWidget*>(parentWidget)) {
        const DomPropertyHash attributes = propertyMap(ui_widget->elementAttribute());
        const int i = tabWidget->count() - 1;
        TRANSLATE_SUBWIDGET_PROP(tabWidget, titleAttribute, setTabText, PROP_TABPAGETEXT);
# ifndef QT_NO_TOOLTIP
        TRANSLATE_SUBWIDGET_PROP(tabWidget, toolTipAttribute, setTabToolTip, PROP_TABPAGETOOLTIP);
# endif
# ifndef QT_NO_WHATSTHIS
        TRANSLATE_SUBWIDGET_PROP(tabWidget, whatsThisAttribute, setTabWhatsThis, PROP_TABPAGEWHATSTHIS);
# endif
#endif
#ifndef QT_NO_TOOLBOX
    } else if (QToolBox *toolBox = qobject_cast<QToolBox*>(parentWidget)) {
        const DomPropertyHash attributes = propertyMap(ui_widget->elementAttribute());
        const int i = toolBox->count() - 1;
        TRANSLATE_SUBWIDGET_PROP(toolBox, labelAttribute, setItemText, PROP_TOOLITEMTEXT);
# ifndef QT_NO_TOOLTIP
        TRANSLATE_SUBWIDGET_PROP(toolBox, toolTipAttribute, setItemToolTip, PROP_TOOLITEMTOOLTIP);
# endif
#endif
    }

    return true;
}

#ifdef QFORMINTERNAL_NAMESPACE
}
#endif

class QUiLoaderPrivate
{
public:
#ifdef QFORMINTERNAL_NAMESPACE
    QFormInternal::FormBuilderPrivate builder;
#else
    FormBuilderPrivate builder;
#endif

    void setupWidgetMap() const;
};

void QUiLoaderPrivate::setupWidgetMap() const
{
    if (!g_widgets()->isEmpty())
        return;

#define DECLARE_WIDGET(a, b) g_widgets()->insert(QLatin1String(#a), true);
#define DECLARE_LAYOUT(a, b)

#include "widgets.table"

#undef DECLARE_WIDGET
#undef DECLARE_WIDGET_1
#undef DECLARE_LAYOUT
}

/*!
    \class QUiLoader
    \inmodule QtUiTools

    \brief The QUiLoader class allows standalone applications dynamically
    create user interfaces at run-time using the information stored in
    .ui files or specified plugin paths.

    In addition, you can customize of creating an user interface by
    deriving your own loader class.

    If you have a custom component or an application that embeds Qt
    Designer, you can also use the QFormBuilder class provided by the
    QtDesigner module to create user interfaces from .ui files.

    The QUiLoader class provides a collection of functions that allows
    you to create widgets based on the information stored in \c .ui
    files (created with Qt Designer) or available in the specified
    plugin paths. The specified plugin paths can be retrieved using
    the pluginPaths() function. You can retrieve the contents of an \c
    .ui file using the load() function. For example:

    \snippet doc/src/snippets/quiloader/mywidget.cpp 0

    By including the user interface in the form's resources (\c myform.qrc),
    we ensure that it will be present at run-time:

    \quotefile doc/src/snippets/quiloader/mywidget.qrc

    The availableWidgets() function returns a QStringList with the
    class names of the widgets available in the specified plugin
    paths. You can create any of these widgets using the
    createWidget() function. For example:

    \snippet doc/src/snippets/quiloader/main.cpp 0

    You can make a custom widget available to the loader using the
    addPluginPath() function, and you can remove all the available widgets
    by calling the clearPluginPaths() function.

    The createAction(), createActionGroup(), createLayout() and
    createWidget() functions are used internally by the QUiLoader class
    whenever it has to create an action, action group, layout or
    widget respectively. For that reason, you can subclass the QUiLoader
    class and reimplement these functions to intervene the process of
    constructing an user interface. For example, you might want to
    create a list of the actions created when loading a form or
    creating a custom widget.

    For a complete example using the QUiLoader class, see the \l
    {designer/calculatorbuilder}{Calculator Builder} example.

    \sa QtUiTools, QFormBuilder
*/

/*!
    Creates a form loader with the given \a parent.
*/
QUiLoader::QUiLoader(QObject *parent)
    : QObject(parent), d_ptr(new QUiLoaderPrivate)
{
    Q_D(QUiLoader);

    d->builder.loader = this;

    QStringList paths;
    foreach (const QString &path, QApplication::libraryPaths()) {
        QString libPath = path;
        libPath  += QDir::separator();
        libPath  += QLatin1String("designer");
        paths.append(libPath);
    }

    d->builder.setPluginPath(paths);
}

/*!
    Destroys the loader.
*/
QUiLoader::~QUiLoader()
{
    delete d_ptr;
}

/*!
    Loads a form from the given \a device and creates a new widget with the given
    \a parentWidget to hold its contents.

    \sa createWidget()
*/
QWidget *QUiLoader::load(QIODevice *device, QWidget *parentWidget)
{
    Q_D(QUiLoader);
    // QXmlStreamReader will report errors on open failure.
    if (!device->isOpen())
        device->open(QIODevice::ReadOnly|QIODevice::Text);
    return d->builder.load(device, parentWidget);
}

/*!
    Returns a list naming the paths the loader searches when locating
    custom widget plugins.

    \sa addPluginPath(), clearPluginPaths()
*/
QStringList QUiLoader::pluginPaths() const
{
    Q_D(const QUiLoader);
    return d->builder.pluginPaths();
}

/*!
    Clears the list of paths the loader searches when locating
    plugins.

    \sa addPluginPath(), pluginPaths()
*/
void QUiLoader::clearPluginPaths()
{
    Q_D(QUiLoader);
    d->builder.clearPluginPaths();
}

/*!
    Adds the given \a path to the list of paths the loader searches
    when locating plugins.

    \sa pluginPaths(), clearPluginPaths()
*/
void QUiLoader::addPluginPath(const QString &path)
{
    Q_D(QUiLoader);
    d->builder.addPluginPath(path);
}

/*!
  Creates a new widget with the given \a parent and \a name
  using the class specified by \a className. You can use this
  function to create any of the widgets returned by the
  availableWidgets() function.

  The function is also used internally by the QUiLoader class whenever
  it has to create a widget. For that reason, you can subclass the
  QUiLoader class and reimplement this function to intervene in the
  process of constructing a user interface or widget.

  \sa availableWidgets(), load()
*/
QWidget *QUiLoader::createWidget(const QString &className, QWidget *parent, const QString &name)
{
    Q_D(QUiLoader);
    return d->builder.defaultCreateWidget(className, parent, name);
}

/*!
    Creates a new layout with the given \a parent and \a name
    using the class specified by \a className.

    The function is used internally by the QUiLoader class whenever it
    has to create a layout. For that reason, you can subclass the
    QUiLoader class and reimplement this function to intervene the
    process of constructing an user interface or widget.

    \sa createWidget(), load()
*/
QLayout *QUiLoader::createLayout(const QString &className, QObject *parent, const QString &name)
{
    Q_D(QUiLoader);
    return d->builder.defaultCreateLayout(className, parent, name);
}

/*!
    Creates a new action group with the given \a parent and \a name.

    The function is used internally by the QUiLoader class whenever it
    has to create an action group. For that reason, you can subclass
    the QUiLoader class and reimplement this function to intervene the
    process of constructing an user interface or widget.

    \sa createAction(), createWidget(), load()
 */
QActionGroup *QUiLoader::createActionGroup(QObject *parent, const QString &name)
{
    Q_D(QUiLoader);
    return d->builder.defaultCreateActionGroup(parent, name);
}

/*!
    Creates a new action with the given \a parent and \a name.

    The function is used internally by the QUiLoader class whenever it
    has to create an action. For that reason, you can subclass the
    QUiLoader class and reimplement this function to intervene the
    process of constructing an user interface or widget.

    \sa createActionGroup(), createWidget(), load()
*/
QAction *QUiLoader::createAction(QObject *parent, const QString &name)
{
    Q_D(QUiLoader);
    return d->builder.defaultCreateAction(parent, name);
}

/*!
    Returns a list naming the available widgets that can be built
    using the createWidget() function, i.e all the widgets specified
    within the given plugin paths.

    \sa pluginPaths(), createWidget()

*/
QStringList QUiLoader::availableWidgets() const
{
    Q_D(const QUiLoader);

    d->setupWidgetMap();
    widget_map available = *g_widgets();

    foreach (QDesignerCustomWidgetInterface *plugin, d->builder.customWidgets()) {
        available.insert(plugin->name(), true);
    }

    return available.keys();
}


/*!
    Returns a list naming the available layouts that can be built
    using the createLayout() function

    \sa createLayout()
    \since 4.5
*/

QStringList QUiLoader::availableLayouts() const
{
    QStringList rc;
#define DECLARE_WIDGET(a, b)
#define DECLARE_LAYOUT(a, b) rc.push_back(QLatin1String(#a));

#include "widgets.table"

#undef DECLARE_WIDGET
#undef DECLARE_LAYOUT
    return rc;
}

/*!
    Sets the working directory of the loader to \a dir. The loader
    looks for other resources, such as icons and resource files,
    in paths relative to this directory.

    \sa workingDirectory()
*/

void QUiLoader::setWorkingDirectory(const QDir &dir)
{
    Q_D(QUiLoader);
    d->builder.setWorkingDirectory(dir);
}

/*!
    Returns the working directory of the loader.

    \sa setWorkingDirectory()
*/

QDir QUiLoader::workingDirectory() const
{
    Q_D(const QUiLoader);
    return d->builder.workingDirectory();
}

/*!
    Sets whether the execution of scripts is enabled to \a enabled.
    \since 4.3
    \internal
*/

void QUiLoader::setScriptingEnabled(bool enabled)
{
    Q_D(QUiLoader);
    d->builder.setScriptingEnabled(enabled);
}

/*!
   Returns whether the execution of scripts is enabled.
   \sa setScriptingEnabled()
   \since 4.3
   \internal
*/

bool QUiLoader::isScriptingEnabled() const
{
    Q_D(const QUiLoader);
    return d->builder.isScriptingEnabled();
}

/*!
    Sets whether user interfaces loaded by this loader automatically
    retranslate themselves upon receiving a language change event or not,
    depending on \a enabled.

    \since 4.5
*/

void QUiLoader::setLanguageChangeEnabled(bool enabled)
{
    Q_D(QUiLoader);
    d->builder.dynamicTr = enabled;
}

/*!
   Returns whether dynamic retranslation on language change is enabled.
   \sa setLanguageChangeEnabled()
   \since 4.5
*/

bool QUiLoader::isLanguageChangeEnabled() const
{
    Q_D(const QUiLoader);
    return d->builder.dynamicTr;
}

/*!
    \internal

    Sets whether user interfaces loaded by this loader are translated
    at all. Note that this is orthogonal to languageChangeEnabled.

    \since 4.5
*/

void QUiLoader::setTranslationEnabled(bool enabled)
{
    Q_D(QUiLoader);
    d->builder.trEnabled = enabled;
}

/*!
    \internal

    Returns whether translation is enabled.
    \sa setTranslationEnabled()

    \since 4.5
*/

bool QUiLoader::isTranslationEnabled() const
{
    Q_D(const QUiLoader);
    return d->builder.trEnabled;
}

QT_END_NAMESPACE

#include "quiloader.moc"