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

**

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

** All rights reserved.

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

**

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

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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

#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->horizontalHeaderItem(j), m_className);

                for (int i = 0; i < row_cnt; ++i) {

                    reTranslateTableItem(tablew->verticalHeaderItem(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());