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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdesigner_promotion_p.h"
#include "widgetdatabase_p.h"
#include "metadatabase_p.h"
#include "widgetdatabase_p.h"
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormWindowManagerInterface>
#include <QtDesigner/QDesignerObjectInspectorInterface>
#include <QtDesigner/QDesignerWidgetBoxInterface>
#include <QtDesigner/QDesignerWidgetDataBaseInterface>
#include <QtCore/QMap>
#include <QtCore/QCoreApplication>
#include <qdebug.h>
QT_BEGIN_NAMESPACE
namespace {
// Return a set of on-promotable classes
const QSet<QString> &nonPromotableClasses() {
static QSet<QString> rc;
if (rc.empty()) {
rc.insert(QLatin1String("Line"));
rc.insert(QLatin1String("QAction"));
rc.insert(QLatin1String("Spacer"));
rc.insert(QLatin1String("QMainWindow"));
rc.insert(QLatin1String("QDialog"));
rc.insert(QLatin1String("QWorkspace"));
rc.insert(QLatin1String("QMdiArea"));
rc.insert(QLatin1String("QMdiSubWindow"));
}
return rc;
}
// Return widget database index of a promoted class or -1 with error message
int promotedWidgetDataBaseIndex(const QDesignerWidgetDataBaseInterface *widgetDataBase,
const QString &className,
QString *errorMessage) {
const int index = widgetDataBase->indexOfClassName(className);
if (index == -1 || !widgetDataBase->item(index)->isPromoted()) {
*errorMessage = QCoreApplication::tr("%1 is not a promoted class.").arg(className);
return -1;
}
return index;
}
// Return widget database item of a promoted class or 0 with error message
QDesignerWidgetDataBaseItemInterface *promotedWidgetDataBaseItem(const QDesignerWidgetDataBaseInterface *widgetDataBase,
const QString &className,
QString *errorMessage) {
const int index = promotedWidgetDataBaseIndex(widgetDataBase, className, errorMessage);
if (index == -1)
return 0;
return widgetDataBase->item(index);
}
// extract class name from xml "<widget class="QWidget" ...>". Quite a hack.
QString classNameFromXml(QString xml) {
static const QString tag = QLatin1String("class=\"");
const int pos = xml.indexOf(tag);
if (pos == -1)
return QString();
xml.remove(0, pos + tag.size());
const int closingPos = xml.indexOf(QLatin1Char('"'));
if (closingPos == -1)
return QString();
xml.remove(closingPos, xml.size() - closingPos);
return xml;
}
// return a list of class names in the scratch pad
QStringList getScratchPadClasses(const QDesignerWidgetBoxInterface *wb) {
QStringList rc;
const int catCount = wb->categoryCount();
for (int c = 0; c < catCount; c++) {
const QDesignerWidgetBoxInterface::Category category = wb->category(c);
if (category.type() == QDesignerWidgetBoxInterface::Category::Scratchpad) {
const int widgetCount = category.widgetCount();
for (int w = 0; w < widgetCount; w++) {
const QString className = classNameFromXml( category.widget(w).domXml());
if (!className.isEmpty())
rc += className;
}
}
}
return rc;
}
}
namespace qdesigner_internal {
QDesignerPromotion::QDesignerPromotion(QDesignerFormEditorInterface *core) :
m_core(core) {
}
bool QDesignerPromotion::addPromotedClass(const QString &baseClass,
const QString &className,
const QString &includeFile,
QString *errorMessage)
{
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
const int baseClassIndex = widgetDataBase->indexOfClassName(baseClass);
if (baseClassIndex == -1) {
*errorMessage = QCoreApplication::tr("The base class %1 is invalid.").arg(baseClass);
return false;
}
const int existingClassIndex = widgetDataBase->indexOfClassName(className);
if (existingClassIndex != -1) {
*errorMessage = QCoreApplication::tr("The class %1 already exists.").arg(className);
return false;
}
// Clone derived item.
QDesignerWidgetDataBaseItemInterface *promotedItem = WidgetDataBaseItem::clone(widgetDataBase->item(baseClassIndex));
// Also inherit the container flag in case of QWidget-derived classes
// as it is most likely intended for stacked pages.
// set new props
promotedItem->setName(className);
promotedItem->setGroup(QCoreApplication::tr("Promoted Widgets"));
promotedItem->setCustom(true);
promotedItem->setPromoted(true);
promotedItem->setExtends(baseClass);
promotedItem->setIncludeFile(includeFile);
widgetDataBase->append(promotedItem);
return true;
}
QList<QDesignerWidgetDataBaseItemInterface *> QDesignerPromotion::promotionBaseClasses() const
{
typedef QMap<QString, QDesignerWidgetDataBaseItemInterface *> SortedDatabaseItemMap;
SortedDatabaseItemMap sortedDatabaseItemMap;
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
const int cnt = widgetDataBase->count();
for (int i = 0; i < cnt; i++) {
QDesignerWidgetDataBaseItemInterface *dbItem = widgetDataBase->item(i);
if (canBePromoted(dbItem)) {
sortedDatabaseItemMap.insert(dbItem->name(), dbItem);
}
}
return sortedDatabaseItemMap.values();
}
bool QDesignerPromotion::canBePromoted(const QDesignerWidgetDataBaseItemInterface *dbItem) const
{
if (dbItem->isPromoted() || !dbItem->extends().isEmpty())
return false;
const QString name = dbItem->name();
if (nonPromotableClasses().contains(name))
return false;
if (name.startsWith(QLatin1String("QDesigner")) ||
name.startsWith(QLatin1String("QLayout")))
return false;
return true;
}
QDesignerPromotion::PromotedClasses QDesignerPromotion::promotedClasses() const
{
typedef QMap<QString, QDesignerWidgetDataBaseItemInterface *> ClassNameItemMap;
// A map containing base classes and their promoted classes.
typedef QMap<QString, ClassNameItemMap> BaseClassPromotedMap;
BaseClassPromotedMap baseClassPromotedMap;
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
// Look for promoted classes and insert into map according to base class.
const int cnt = widgetDataBase->count();
for (int i = 0; i < cnt; i++) {
QDesignerWidgetDataBaseItemInterface *dbItem = widgetDataBase->item(i);
if (dbItem->isPromoted()) {
const QString baseClassName = dbItem->extends();
BaseClassPromotedMap::iterator it = baseClassPromotedMap.find(baseClassName);
if (it == baseClassPromotedMap.end()) {
it = baseClassPromotedMap.insert(baseClassName, ClassNameItemMap());
}
it.value().insert(dbItem->name(), dbItem);
}
}
// convert map into list.
PromotedClasses rc;
if (baseClassPromotedMap.empty())
return rc;
const BaseClassPromotedMap::const_iterator bcend = baseClassPromotedMap.constEnd();
for (BaseClassPromotedMap::const_iterator bit = baseClassPromotedMap.constBegin(); bit != bcend; ++bit) {
const int baseIndex = widgetDataBase->indexOfClassName(bit.key());
Q_ASSERT(baseIndex >= 0);
QDesignerWidgetDataBaseItemInterface *baseItem = widgetDataBase->item(baseIndex);
// promoted
const ClassNameItemMap::const_iterator pcend = bit.value().constEnd();
for (ClassNameItemMap::const_iterator pit = bit.value().constBegin(); pit != pcend; ++pit) {
PromotedClass item;
item.baseItem = baseItem;
item.promotedItem = pit.value();
rc.push_back(item);
}
}
return rc;
}
QSet<QString> QDesignerPromotion::referencedPromotedClassNames() const {
QSet<QString> rc;
const MetaDataBase *metaDataBase = qobject_cast<const MetaDataBase*>(m_core->metaDataBase());
if (!metaDataBase)
return rc;
const QList<QObject*> objs = metaDataBase->objects();
const QList<QObject*>::const_iterator cend = objs.constEnd();
for ( QList<QObject*>::const_iterator it = objs.constBegin(); it != cend; ++it) {
const QString customClass = metaDataBase->metaDataBaseItem(*it)->customClassName();
if (!customClass.isEmpty())
rc.insert(customClass);
}
// check the scratchpad of the widget box
if (QDesignerWidgetBoxInterface *widgetBox = m_core->widgetBox()) {
const QStringList scratchPadClasses = getScratchPadClasses(widgetBox);
if (!scratchPadClasses.empty()) {
// Check whether these are actually promoted
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
QStringList::const_iterator cend = scratchPadClasses.constEnd();
for (QStringList::const_iterator it = scratchPadClasses.constBegin(); it != cend; ++it ) {
const int index = widgetDataBase->indexOfClassName(*it);
if (index != -1 && widgetDataBase->item(index)->isPromoted())
rc += *it;
}
}
}
return rc;
}
bool QDesignerPromotion::removePromotedClass(const QString &className, QString *errorMessage) {
// check if it exists and is promoted
WidgetDataBase *widgetDataBase = qobject_cast<WidgetDataBase *>(m_core->widgetDataBase());
if (!widgetDataBase) {
*errorMessage = QCoreApplication::tr("The class %1 cannot be removed").arg(className);
return false;
}
const int index = promotedWidgetDataBaseIndex(widgetDataBase, className, errorMessage);
if (index == -1)
return false;
if (referencedPromotedClassNames().contains(className)) {
*errorMessage = QCoreApplication::tr("The class %1 cannot be removed because it is still referenced.").arg(className);
return false;
}
widgetDataBase->remove(index);
return true;
}
bool QDesignerPromotion::changePromotedClassName(const QString &oldclassName, const QString &newClassName, QString *errorMessage) {
const MetaDataBase *metaDataBase = qobject_cast<const MetaDataBase*>(m_core->metaDataBase());
if (!metaDataBase) {
*errorMessage = QCoreApplication::tr("The class %1 cannot be renamed").arg(oldclassName);
return false;
}
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
// check the new name
if (newClassName.isEmpty()) {
*errorMessage = QCoreApplication::tr("The class %1 cannot be renamed to an empty name.").arg(oldclassName);
return false;
}
const int existingIndex = widgetDataBase->indexOfClassName(newClassName);
if (existingIndex != -1) {
*errorMessage = QCoreApplication::tr("There is already a class named %1.").arg(newClassName);
return false;
}
// Check old class
QDesignerWidgetDataBaseItemInterface *dbItem = promotedWidgetDataBaseItem(widgetDataBase, oldclassName, errorMessage);
if (!dbItem)
return false;
// Change the name in the data base and change all referencing objects in the meta database
dbItem->setName(newClassName);
bool foundReferences = false;
foreach (QObject* object, metaDataBase->objects()) {
MetaDataBaseItem *item = metaDataBase->metaDataBaseItem(object);
Q_ASSERT(item);
if (item->customClassName() == oldclassName) {
item->setCustomClassName(newClassName);
foundReferences = true;
}
}
// set state
if (foundReferences)
refreshObjectInspector();
return true;
}
bool QDesignerPromotion::setPromotedClassIncludeFile(const QString &className, const QString &includeFile, QString *errorMessage) {
// check file
if (includeFile.isEmpty()) {
*errorMessage = QCoreApplication::tr("Cannot set an empty include file.");
return false;
}
// check item
QDesignerWidgetDataBaseInterface *widgetDataBase = m_core->widgetDataBase();
QDesignerWidgetDataBaseItemInterface *dbItem = promotedWidgetDataBaseItem(widgetDataBase, className, errorMessage);
if (!dbItem)
return false;
dbItem->setIncludeFile(includeFile);
return true;
}
void QDesignerPromotion::refreshObjectInspector() {
if (QDesignerFormWindowManagerInterface *fwm = m_core->formWindowManager()) {
if (QDesignerFormWindowInterface *fw = fwm->activeFormWindow())
if ( QDesignerObjectInspectorInterface *oi = m_core->objectInspector()) {
oi->setFormWindow(fw);
}
}
}
}
QT_END_NAMESPACE
|