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/****************************************************************************
**
** Copyright (C) 2010 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_widgetbox_p.h"
#include "qdesigner_utils_p.h"
#include <ui4_p.h>
#include <QtCore/QRegExp>
#include <QtCore/QDebug>
#include <QtCore/QXmlStreamReader>
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
QDesignerWidgetBox::QDesignerWidgetBox(QWidget *parent, Qt::WindowFlags flags)
: QDesignerWidgetBoxInterface(parent, flags),
m_loadMode(LoadMerge)
{
}
QDesignerWidgetBox::LoadMode QDesignerWidgetBox::loadMode() const
{
return m_loadMode;
}
void QDesignerWidgetBox::setLoadMode(LoadMode lm)
{
m_loadMode = lm;
}
// Convenience to find a widget by class name
bool QDesignerWidgetBox::findWidget(const QDesignerWidgetBoxInterface *wbox,
const QString &className,
const QString &category,
Widget *widgetData)
{
// Note that entry names do not necessarily match the class name
// (at least, not for the standard widgets), so,
// look in the XML for the class name of the first widget to appear
const QString widgetTag = QLatin1String("<widget");
QString pattern = QLatin1String("^<widget\\s+class\\s*=\\s*\"");
pattern += className;
pattern += QLatin1String("\".*$");
const QRegExp regexp(pattern);
Q_ASSERT(regexp.isValid());
const int catCount = wbox->categoryCount();
for (int c = 0; c < catCount; c++) {
const Category cat = wbox->category(c);
if (category.isEmpty() || cat.name() == category) {
const int widgetCount = cat.widgetCount();
for (int w = 0; w < widgetCount; w++) {
const Widget widget = cat.widget(w);
QString xml = widget.domXml(); // Erase the <ui> tag that can be present starting from 4.4
const int widgetTagIndex = xml.indexOf(widgetTag);
if (widgetTagIndex != -1) {
xml.remove(0, widgetTagIndex);
if (regexp.exactMatch(xml)) {
*widgetData = widget;
return true;
}
}
}
}
}
return false;
}
// Convenience to create a Dom Widget from widget box xml code.
DomUI *QDesignerWidgetBox::xmlToUi(const QString &name, const QString &xml, bool insertFakeTopLevel,
QString *errorMessage)
{
QXmlStreamReader reader(xml);
DomUI *ui = 0;
// The xml description must either contain a root element "ui" with a child element "widget"
// or "widget" as the root element (4.3 legacy)
const QString widgetTag = QLatin1String("widget");
while (!reader.atEnd()) {
if (reader.readNext() == QXmlStreamReader::StartElement) {
const QStringRef name = reader.name();
if (ui) {
reader.raiseError(tr("Unexpected element <%1>").arg(name.toString()));
continue;
}
if (name.compare(QLatin1String("widget"), Qt::CaseInsensitive) == 0) { // 4.3 legacy, wrap into DomUI
ui = new DomUI;
DomWidget *widget = new DomWidget;
widget->read(reader);
ui->setElementWidget(widget);
} else if (name.compare(QLatin1String("ui"), Qt::CaseInsensitive) == 0) { // 4.4
ui = new DomUI;
ui->read(reader);
} else {
reader.raiseError(tr("Unexpected element <%1>").arg(name.toString()));
}
}
}
if (reader.hasError()) {
delete ui;
*errorMessage = tr("A parse error occurred at line %1, column %2 of the XML code "
"specified for the widget %3: %4\n%5")
.arg(reader.lineNumber()).arg(reader.columnNumber()).arg(name)
.arg(reader.errorString()).arg(xml);
return 0;
}
if (!ui || !ui->elementWidget()) {
delete ui;
*errorMessage = tr("The XML code specified for the widget %1 does not contain "
"any widget elements.\n%2").arg(name).arg(xml);
return 0;
}
if (insertFakeTopLevel) {
DomWidget *fakeTopLevel = new DomWidget;
fakeTopLevel->setAttributeClass(QLatin1String("QWidget"));
QList<DomWidget *> children;
children.push_back(ui->takeElementWidget());
fakeTopLevel->setElementWidget(children);
ui->setElementWidget(fakeTopLevel);
}
return ui;
}
// Convenience to create a Dom Widget from widget box xml code.
DomUI *QDesignerWidgetBox::xmlToUi(const QString &name, const QString &xml, bool insertFakeTopLevel)
{
QString errorMessage;
DomUI *rc = xmlToUi(name, xml, insertFakeTopLevel, &errorMessage);
if (!rc)
qdesigner_internal::designerWarning(errorMessage);
return rc;
}
} // namespace qdesigner_internal
QT_END_NAMESPACE
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