tools/designer/src/lib/shared/qdesigner_utils.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/designer/src/lib/shared/qdesigner_utils.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,734 @@
+/****************************************************************************
+**
+** 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
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdesigner_utils_p.h"
+#include "qdesigner_propertycommand_p.h"
+#include "abstractformbuilder.h"
+#include "formwindowbase_p.h"
+
+#include <QtDesigner/QDesignerFormEditorInterface>
+#include <QtDesigner/QDesignerFormWindowInterface>
+#include <QtDesigner/QDesignerIconCacheInterface>
+#include <QtDesigner/QDesignerResourceBrowserInterface>
+#include <QtDesigner/QDesignerLanguageExtension>
+#include <QtDesigner/QDesignerTaskMenuExtension>
+#include <QtDesigner/QExtensionManager>
+
+#include <QtGui/QIcon>
+#include <QtGui/QPixmap>
+#include <QtCore/QDir>
+
+#include <QtGui/QApplication>
+#include <QtCore/QProcess>
+#include <QtCore/QLibraryInfo>
+#include <QtCore/QDebug>
+#include <QtCore/QQueue>
+#include <QtGui/QListWidget>
+#include <QtGui/QTreeWidget>
+#include <QtGui/QTableWidget>
+#include <QtGui/QComboBox>
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal
+{
+    QDESIGNER_SHARED_EXPORT void designerWarning(const QString &message)
+    {
+        qWarning("Designer: %s", qPrintable(message));
+    }
+
+    void reloadTreeItem(DesignerIconCache *iconCache, QTreeWidgetItem *item)
+    {
+        if (!item)
+            return;
+
+        for (int c = 0; c < item->columnCount(); c++) {
+            const QVariant v = item->data(c, Qt::DecorationPropertyRole);
+            if (qVariantCanConvert<PropertySheetIconValue>(v))
+                item->setIcon(c, iconCache->icon(qVariantValue<PropertySheetIconValue>(v)));
+        }
+    }
+
+    void reloadListItem(DesignerIconCache *iconCache, QListWidgetItem *item)
+    {
+        if (!item)
+            return;
+
+        const QVariant v = item->data(Qt::DecorationPropertyRole);
+        if (qVariantCanConvert<PropertySheetIconValue>(v))
+            item->setIcon(iconCache->icon(qVariantValue<PropertySheetIconValue>(v)));
+    }
+
+    void reloadTableItem(DesignerIconCache *iconCache, QTableWidgetItem *item)
+    {
+        if (!item)
+            return;
+
+        const QVariant v = item->data(Qt::DecorationPropertyRole);
+        if (qVariantCanConvert<PropertySheetIconValue>(v))
+            item->setIcon(iconCache->icon(qVariantValue<PropertySheetIconValue>(v)));
+    }
+
+    void reloadIconResources(DesignerIconCache *iconCache, QObject *object)
+    {
+        if (QListWidget *listWidget = qobject_cast<QListWidget *>(object)) {
+            for (int i = 0; i < listWidget->count(); i++)
+                reloadListItem(iconCache, listWidget->item(i));
+        } else if (QComboBox *comboBox = qobject_cast<QComboBox *>(object)) {
+            for (int i = 0; i < comboBox->count(); i++) {
+                const QVariant v = comboBox->itemData(i, Qt::DecorationPropertyRole);
+                if (qVariantCanConvert<PropertySheetIconValue>(v)) {
+                    QIcon icon = iconCache->icon(qVariantValue<PropertySheetIconValue>(v));
+                    comboBox->setItemIcon(i, icon);
+                    comboBox->setItemData(i, icon);
+                }
+            }
+        } else if (QTreeWidget *treeWidget = qobject_cast<QTreeWidget *>(object)) {
+            reloadTreeItem(iconCache, treeWidget->headerItem());
+            QQueue<QTreeWidgetItem *> itemsQueue;
+            for (int i = 0; i < treeWidget->topLevelItemCount(); i++)
+                itemsQueue.enqueue(treeWidget->topLevelItem(i));
+            while (!itemsQueue.isEmpty()) {
+                QTreeWidgetItem *item = itemsQueue.dequeue();
+                for (int i = 0; i < item->childCount(); i++)
+                    itemsQueue.enqueue(item->child(i));
+                reloadTreeItem(iconCache, item);
+            }
+        } else if (QTableWidget *tableWidget = qobject_cast<QTableWidget *>(object)) {
+            const int columnCount = tableWidget->columnCount();
+            const int rowCount = tableWidget->rowCount();
+            for (int c = 0; c < columnCount; c++)
+                reloadTableItem(iconCache, tableWidget->horizontalHeaderItem(c));
+            for (int r = 0; r < rowCount; r++)
+                reloadTableItem(iconCache, tableWidget->verticalHeaderItem(r));
+            for (int c = 0; c < columnCount; c++)
+                for (int r = 0; r < rowCount; r++)
+                    reloadTableItem(iconCache, tableWidget->item(r, c));
+        }
+    }
+
+    // ------------- DesignerMetaEnum
+    DesignerMetaEnum::DesignerMetaEnum(const QString &name, const QString &scope, const QString &separator) :
+        MetaEnum<int>(name, scope, separator)
+    {
+    }
+
+
+    QString DesignerMetaEnum::toString(int value, SerializationMode sm, bool *ok) const
+    {
+        // find value
+        bool valueOk;
+        const QString item = valueToKey(value, &valueOk);
+        if (ok)
+            *ok = valueOk;
+
+        if (!valueOk || sm == NameOnly)
+            return item;
+
+        QString qualifiedItem;
+        appendQualifiedName(item,  qualifiedItem);
+        return qualifiedItem;
+    }
+
+    QString DesignerMetaEnum::messageToStringFailed(int value) const
+    {
+        return QCoreApplication::translate("DesignerMetaEnum", "%1 is not a valid enumeration value of '%2'.").arg(value).arg(name());
+    }
+
+    QString DesignerMetaEnum::messageParseFailed(const QString &s) const
+    {
+        return QCoreApplication::translate("DesignerMetaEnum", "'%1' could not be converted to an enumeration value of type '%2'.").arg(s).arg(name());
+    }
+    // -------------- DesignerMetaFlags
+    DesignerMetaFlags::DesignerMetaFlags(const QString &name, const QString &scope, const QString &separator) :
+       MetaEnum<uint>(name, scope, separator)
+    {
+    }
+
+    QStringList DesignerMetaFlags::flags(int ivalue) const
+    {
+        typedef MetaEnum<uint>::KeyToValueMap::const_iterator KeyToValueMapIterator;
+        QStringList rc;
+        const uint v = static_cast<uint>(ivalue);
+        const KeyToValueMapIterator cend = keyToValueMap().constEnd();
+        for (KeyToValueMapIterator it = keyToValueMap().constBegin();it != cend; ++it )  {
+            const uint itemValue = it.value();
+            // Check for equality first as flag values can be 0 or -1, too. Takes preference over a bitwise flag
+            if (v == itemValue) {
+                rc.clear();
+                rc.push_back(it.key());
+                return rc;
+            }
+            // Do not add 0-flags (None-flags)
+            if (itemValue)
+                if ((v & itemValue) == itemValue)
+                    rc.push_back(it.key());
+        }
+        return rc;
+    }
+
+
+    QString DesignerMetaFlags::toString(int value, SerializationMode sm) const
+    {
+        const QStringList flagIds = flags(value);
+        if (flagIds.empty())
+            return QString();
+
+        const QChar delimiter = QLatin1Char('|');
+        QString rc;
+        const QStringList::const_iterator cend = flagIds.constEnd();
+        for (QStringList::const_iterator it = flagIds.constBegin(); it != cend; ++it) {
+            if (!rc.isEmpty())
+                rc += delimiter ;
+            if (sm == FullyQualified)
+                appendQualifiedName(*it, rc);
+            else
+                rc += *it;
+        }
+        return rc;
+    }
+
+
+    int DesignerMetaFlags::parseFlags(const QString &s, bool *ok) const
+    {
+        if (s.isEmpty()) {
+            if (ok)
+                *ok = true;
+            return 0;
+        }
+        uint flags = 0;
+        bool valueOk = true;
+        QStringList keys = s.split(QString(QLatin1Char('|')));
+        const QStringList::iterator cend = keys.end();
+        for (QStringList::iterator it = keys.begin(); it != cend; ++it) {
+            const uint flagValue = keyToValue(*it, &valueOk);
+            if (!valueOk) {
+                flags = 0;
+                break;
+            }
+            flags |= flagValue;
+        }
+        if (ok)
+            *ok = valueOk;
+        return static_cast<int>(flags);
+    }
+
+    QString DesignerMetaFlags::messageParseFailed(const QString &s) const
+    {
+        return QCoreApplication::translate("DesignerMetaFlags", "'%1' could not be converted to a flag value of type '%2'.").arg(s).arg(name());
+    }
+
+    // ---------- PropertySheetEnumValue
+
+    PropertySheetEnumValue::PropertySheetEnumValue(int v, const DesignerMetaEnum &me) :
+       value(v),
+       metaEnum(me)
+    {
+    }
+    PropertySheetEnumValue::PropertySheetEnumValue() :
+       value(0)
+    {
+    }
+
+    // ---------------- PropertySheetFlagValue
+    PropertySheetFlagValue::PropertySheetFlagValue(int v, const DesignerMetaFlags &mf) :
+        value(v),
+        metaFlags(mf)
+    {
+    }
+
+    PropertySheetFlagValue::PropertySheetFlagValue() :
+        value(0)
+    {
+    }
+
+    // ---------------- PropertySheetPixmapValue
+    PropertySheetPixmapValue::PropertySheetPixmapValue(const QString &path) : m_path(path)
+    {
+    }
+
+    PropertySheetPixmapValue::PropertySheetPixmapValue()
+    {
+    }
+
+    PropertySheetPixmapValue::PixmapSource PropertySheetPixmapValue::getPixmapSource(QDesignerFormEditorInterface *core, const QString & path)
+    {
+        if (const QDesignerLanguageExtension *lang = qt_extension<QDesignerLanguageExtension *>(core->extensionManager(), core))
+            return lang->isLanguageResource(path) ?  LanguageResourcePixmap : FilePixmap;
+        return path.startsWith(QLatin1Char(':')) ? ResourcePixmap : FilePixmap;
+    }
+
+    int PropertySheetPixmapValue::compare(const PropertySheetPixmapValue &other) const
+    {
+        return m_path.compare(other.m_path);
+    }
+
+    QString PropertySheetPixmapValue::path() const
+    {
+        return m_path;
+    }
+
+    void PropertySheetPixmapValue::setPath(const QString &path)
+    {
+        if (m_path == path)
+            return;
+        m_path = path;
+    }
+
+    // ---------- PropertySheetIconValue
+    PropertySheetIconValue::PropertySheetIconValue(const PropertySheetPixmapValue &pixmap)
+    {
+        setPixmap(QIcon::Normal, QIcon::Off, pixmap);
+    }
+
+    PropertySheetIconValue::PropertySheetIconValue()
+    {
+    }
+
+    bool PropertySheetIconValue::equals(const PropertySheetIconValue &rhs) const
+    {
+        return m_paths == rhs.m_paths;
+    }
+
+    bool PropertySheetIconValue::operator<(const PropertySheetIconValue &other) const
+    {
+        QMapIterator<ModeStateKey, PropertySheetPixmapValue> itThis(m_paths);
+        QMapIterator<ModeStateKey, PropertySheetPixmapValue> itOther(other.m_paths);
+        while (itThis.hasNext() && itOther.hasNext()) {
+            const ModeStateKey thisPair = itThis.next().key();
+            const ModeStateKey otherPair = itOther.next().key();
+            if (thisPair < otherPair)
+                return true;
+            else if (otherPair < thisPair)
+                return false;
+            const int crc = itThis.value().compare(itOther.value());
+            if (crc < 0)
+                return true;
+            if (crc > 0)
+                return false;
+        }
+        if (itOther.hasNext())
+            return true;
+        return false;
+    }
+
+    PropertySheetPixmapValue PropertySheetIconValue::pixmap(QIcon::Mode mode, QIcon::State state) const
+    {
+        const ModeStateKey pair = qMakePair(mode, state);
+        return m_paths.value(pair);
+    }
+
+    void PropertySheetIconValue::setPixmap(QIcon::Mode mode, QIcon::State state, const PropertySheetPixmapValue &pixmap)
+    {
+        const ModeStateKey pair = qMakePair(mode, state);
+        if (pixmap.path().isEmpty())
+            m_paths.remove(pair);
+        else
+            m_paths.insert(pair, pixmap);
+    }
+
+    QPixmap DesignerPixmapCache::pixmap(const PropertySheetPixmapValue &value) const
+    {
+        QMap<PropertySheetPixmapValue, QPixmap>::const_iterator it = m_cache.constFind(value);
+        if (it != m_cache.constEnd())
+            return it.value();
+
+        QPixmap pix = QPixmap(value.path());
+        m_cache.insert(value, pix);
+        return pix;
+    }
+
+    void DesignerPixmapCache::clear()
+    {
+        m_cache.clear();
+    }
+
+    DesignerPixmapCache::DesignerPixmapCache(QObject *parent)
+        : QObject(parent)
+    {
+    }
+
+    QIcon DesignerIconCache::icon(const PropertySheetIconValue &value) const
+    {
+        QMap<PropertySheetIconValue, QIcon>::const_iterator it = m_cache.constFind(value);
+        if (it != m_cache.constEnd())
+            return it.value();
+
+        QIcon icon;
+        QMap<QPair<QIcon::Mode, QIcon::State>, PropertySheetPixmapValue> paths = value.paths();
+        QMapIterator<QPair<QIcon::Mode, QIcon::State>, PropertySheetPixmapValue> itPath(paths);
+        while (itPath.hasNext()) {
+            QPair<QIcon::Mode, QIcon::State> pair = itPath.next().key();
+            icon.addFile(itPath.value().path(), QSize(), pair.first, pair.second);
+        }
+        m_cache.insert(value, icon);
+        return icon;
+    }
+
+    void DesignerIconCache::clear()
+    {
+        m_cache.clear();
+    }
+
+    DesignerIconCache::DesignerIconCache(DesignerPixmapCache *pixmapCache, QObject *parent)
+        : QObject(parent),
+        m_pixmapCache(pixmapCache)
+    {
+
+    }
+
+    PropertySheetStringValue::PropertySheetStringValue(const QString &value,
+                    bool translatable, const QString &disambiguation, const QString &comment)
+        : m_value(value), m_translatable(translatable), m_disambiguation(disambiguation), m_comment(comment)
+    {  }
+
+    QString PropertySheetStringValue::value() const
+    {
+        return m_value;
+    }
+
+    void PropertySheetStringValue::setValue(const QString &value)
+    {
+        m_value = value;
+    }
+
+    bool PropertySheetStringValue::translatable() const
+    {
+        return m_translatable;
+    }
+
+    void PropertySheetStringValue::setTranslatable(bool translatable)
+    {
+        m_translatable = translatable;
+    }
+
+    QString PropertySheetStringValue::disambiguation() const
+    {
+        return m_disambiguation;
+    }
+
+    void PropertySheetStringValue::setDisambiguation(const QString &disambiguation)
+    {
+        m_disambiguation = disambiguation;
+    }
+
+    QString PropertySheetStringValue::comment() const
+    {
+        return m_comment;
+    }
+
+    void PropertySheetStringValue::setComment(const QString &comment)
+    {
+        m_comment = comment;
+    }
+
+    bool PropertySheetStringValue::equals(const PropertySheetStringValue &rhs) const
+    {
+        return (m_value == rhs.m_value) && (m_translatable == rhs.m_translatable)
+            && (m_disambiguation == rhs.m_disambiguation) && (m_comment == rhs.m_comment);
+    }
+
+    PropertySheetKeySequenceValue::PropertySheetKeySequenceValue(const QKeySequence &value,
+                    bool translatable, const QString &disambiguation, const QString &comment)
+        : m_value(value),
+          m_standardKey(QKeySequence::UnknownKey),
+          m_translatable(translatable),
+          m_disambiguation(disambiguation),
+          m_comment(comment)
+    {  }
+
+    PropertySheetKeySequenceValue::PropertySheetKeySequenceValue(const QKeySequence::StandardKey &standardKey,
+                    bool translatable, const QString &disambiguation, const QString &comment)
+        : m_value(QKeySequence(standardKey)),
+          m_standardKey(standardKey),
+          m_translatable(translatable),
+          m_disambiguation(disambiguation),
+          m_comment(comment)
+    {  }
+
+    QKeySequence PropertySheetKeySequenceValue::value() const
+    {
+        return m_value;
+    }
+
+    void PropertySheetKeySequenceValue::setValue(const QKeySequence &value)
+    {
+        m_value = value;
+        m_standardKey = QKeySequence::UnknownKey;
+    }
+
+    QKeySequence::StandardKey PropertySheetKeySequenceValue::standardKey() const
+    {
+        return m_standardKey;
+    }
+
+    void PropertySheetKeySequenceValue::setStandardKey(const QKeySequence::StandardKey &standardKey)
+    {
+        m_value = QKeySequence(standardKey);
+        m_standardKey = standardKey;
+    }
+
+    bool PropertySheetKeySequenceValue::isStandardKey() const
+    {
+        return m_standardKey != QKeySequence::UnknownKey;
+    }
+
+    QString PropertySheetKeySequenceValue::comment() const
+    {
+        return m_comment;
+    }
+
+    void PropertySheetKeySequenceValue::setComment(const QString &comment)
+    {
+        m_comment = comment;
+    }
+
+    QString PropertySheetKeySequenceValue::disambiguation() const
+    {
+        return m_disambiguation;
+    }
+
+    void PropertySheetKeySequenceValue::setDisambiguation(const QString &disambiguation)
+    {
+        m_disambiguation = disambiguation;
+    }
+
+    bool PropertySheetKeySequenceValue::translatable() const
+    {
+        return m_translatable;
+    }
+
+    void PropertySheetKeySequenceValue::setTranslatable(bool translatable)
+    {
+        m_translatable = translatable;
+    }
+
+    bool PropertySheetKeySequenceValue::equals(const PropertySheetKeySequenceValue &rhs) const
+    {
+        return (m_value == rhs.m_value) && (m_standardKey == rhs.m_standardKey)
+            && (m_translatable == rhs.m_translatable) && (m_disambiguation == rhs.m_disambiguation) && (m_comment == rhs.m_comment);
+    }
+
+    class StateMap
+    {
+    public:
+        StateMap()
+        {
+            m_stateToFlag.insert(qMakePair(QIcon::Normal, QIcon::Off), 0x01);
+            m_stateToFlag.insert(qMakePair(QIcon::Normal, QIcon::On), 0x02);
+            m_stateToFlag.insert(qMakePair(QIcon::Disabled, QIcon::Off), 0x04);
+            m_stateToFlag.insert(qMakePair(QIcon::Disabled, QIcon::On), 0x08);
+            m_stateToFlag.insert(qMakePair(QIcon::Active, QIcon::Off), 0x10);
+            m_stateToFlag.insert(qMakePair(QIcon::Active, QIcon::On), 0x20);
+            m_stateToFlag.insert(qMakePair(QIcon::Selected, QIcon::Off), 0x40);
+            m_stateToFlag.insert(qMakePair(QIcon::Selected, QIcon::On), 0x80);
+
+            m_flagToState.insert(0x01, qMakePair(QIcon::Normal, QIcon::Off));
+            m_flagToState.insert(0x02, qMakePair(QIcon::Normal, QIcon::On));
+            m_flagToState.insert(0x04, qMakePair(QIcon::Disabled, QIcon::Off));
+            m_flagToState.insert(0x08, qMakePair(QIcon::Disabled, QIcon::On));
+            m_flagToState.insert(0x10, qMakePair(QIcon::Active, QIcon::Off));
+            m_flagToState.insert(0x20, qMakePair(QIcon::Active, QIcon::On));
+            m_flagToState.insert(0x40, qMakePair(QIcon::Selected, QIcon::Off));
+            m_flagToState.insert(0x80, qMakePair(QIcon::Selected, QIcon::On));
+        }
+        uint flag(const QPair<QIcon::Mode, QIcon::State> &pair) const
+        {
+            return m_stateToFlag.value(pair);
+        }
+        QPair<QIcon::Mode, QIcon::State> state(uint flag) const
+        {
+            return m_flagToState.value(flag);
+        }
+    private:
+        QMap<QPair<QIcon::Mode, QIcon::State>, uint > m_stateToFlag;
+        QMap<uint, QPair<QIcon::Mode, QIcon::State> > m_flagToState;
+    };
+
+    Q_GLOBAL_STATIC(StateMap, stateMap)
+
+    uint PropertySheetIconValue::mask() const
+    {
+        uint flags = 0;
+        QMapIterator<ModeStateKey, PropertySheetPixmapValue> itPath(m_paths);
+        while (itPath.hasNext())
+            flags |= stateMap()->flag(itPath.next().key());
+        return flags;
+    }
+
+    uint PropertySheetIconValue::compare(const PropertySheetIconValue &other) const
+    {
+        uint diffMask = mask() | other.mask();
+        for (int i = 0; i < 8; i++) {
+            uint flag = 1 << i;
+            if (diffMask & flag) { // if state is set in both icons, compare the values
+                const ModeStateKey state = stateMap()->state(flag);
+                if (pixmap(state.first, state.second) == other.pixmap(state.first, state.second))
+                    diffMask &= ~flag;
+            }
+        }
+        return diffMask;
+    }
+
+    void PropertySheetIconValue::assign(const PropertySheetIconValue &other, uint mask)
+    {
+        for (int i = 0; i < 8; i++) {
+            uint flag = 1 << i;
+            if (mask & flag) {
+                const ModeStateKey state = stateMap()->state(flag);
+                setPixmap(state.first, state.second, other.pixmap(state.first, state.second));
+            }
+        }
+    }
+
+    PropertySheetIconValue::ModeStateToPixmapMap PropertySheetIconValue::paths() const
+    {
+        return m_paths;
+    }
+
+    QDESIGNER_SHARED_EXPORT QDesignerFormWindowCommand *createTextPropertyCommand(const QString &propertyName, const QString &text, QObject *object, QDesignerFormWindowInterface *fw)
+    {
+        if (text.isEmpty()) {
+            ResetPropertyCommand *cmd = new ResetPropertyCommand(fw);
+            cmd->init(object, propertyName);
+            return cmd;
+        }
+        SetPropertyCommand *cmd = new SetPropertyCommand(fw);
+        cmd->init(object, propertyName, text);
+        return cmd;
+    }
+
+    QDESIGNER_SHARED_EXPORT QAction *preferredEditAction(QDesignerFormEditorInterface *core, QWidget *managedWidget)
+    {
+        QAction *action = 0;
+        if (const QDesignerTaskMenuExtension *taskMenu = qt_extension<QDesignerTaskMenuExtension*>(core->extensionManager(), managedWidget)) {
+            action = taskMenu->preferredEditAction();
+            if (!action) {
+                const QList<QAction *> actions = taskMenu->taskActions();
+                if (!actions.isEmpty())
+                    action = actions.first();
+            }
+        }
+        if (!action) {
+            if (const QDesignerTaskMenuExtension *taskMenu = qobject_cast<QDesignerTaskMenuExtension *>(
+                        core->extensionManager()->extension(managedWidget, QLatin1String("QDesignerInternalTaskMenuExtension")))) {
+                action = taskMenu->preferredEditAction();
+                if (!action) {
+                    const QList<QAction *> actions = taskMenu->taskActions();
+                    if (!actions.isEmpty())
+                        action = actions.first();
+                }
+            }
+        }
+        return action;
+    }
+
+    QDESIGNER_SHARED_EXPORT bool runUIC(const QString &fileName, UIC_Mode mode, QByteArray& ba, QString &errorMessage)
+    {
+        QStringList argv;
+        QString binary = QLibraryInfo::location(QLibraryInfo::BinariesPath);
+        binary += QDir::separator();
+        switch (mode) {
+        case UIC_GenerateCode:
+            binary += QLatin1String("uic");
+            break;
+        case UIC_ConvertV3:
+            binary += QLatin1String("uic3");
+            argv += QLatin1String("-convert");
+            break;
+        }
+        argv += fileName;
+        QProcess uic;
+        uic.start(binary, argv);
+        if (!uic.waitForStarted()) {
+            errorMessage = QApplication::translate("Designer", "Unable to launch %1.").arg(binary);
+            return false;
+        }
+        if (!uic.waitForFinished()) {
+            errorMessage = QApplication::translate("Designer", "%1 timed out.").arg(binary);
+            return false;
+        }
+        if (uic.exitCode()) {
+            errorMessage =  QString::fromAscii(uic.readAllStandardError());
+            return false;
+        }
+        ba = uic.readAllStandardOutput();
+        return true;
+    }
+
+    QDESIGNER_SHARED_EXPORT QString qtify(const QString &name)
+    {
+        QString qname = name;
+
+        Q_ASSERT(qname.isEmpty() == false);
+
+
+        if (qname.count() > 1 && qname.at(1).isUpper()) {
+            const QChar first = qname.at(0);
+            if (first == QLatin1Char('Q') || first == QLatin1Char('K'))
+                qname.remove(0, 1);
+        }
+
+        const int len = qname.count();
+        for (int i = 0; i < len && qname.at(i).isUpper(); i++)
+            qname[i] = qname.at(i).toLower();
+
+        return qname;
+    }
+
+    // --------------- UpdateBlocker
+    UpdateBlocker::UpdateBlocker(QWidget *w) :
+        m_widget(w),
+        m_enabled(w->updatesEnabled() && w->isVisible())
+    {
+        if (m_enabled)
+            m_widget->setUpdatesEnabled(false);
+    }
+
+    UpdateBlocker::~UpdateBlocker()
+    {
+        if (m_enabled)
+            m_widget->setUpdatesEnabled(true);
+    }
+
+} // namespace qdesigner_internal
+
+QT_END_NAMESPACE