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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
** 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
**************************************************************************/
#include "formtemplatewizardpage.h"
#include "formeditorw.h"
#include "designerconstants.h"
#include <qt_private/abstractnewformwidget_p.h>
#include <QtCore/QDebug>
#include <QtCore/QXmlStreamReader>
#include <QtCore/QXmlStreamAttributes>
#include <QtCore/QByteArray>
#include <QtCore/QBuffer>
#include <QtGui/QVBoxLayout>
#include <QtGui/QMessageBox>
#include <QtGui/QAbstractButton>
#ifdef USE_XSLT
# include <QtXmlPatterns/QXmlQuery>
#else
# include <QtXml/QDomDocument>
#endif
namespace Designer {
namespace Internal {
// ----------------- FormTemplateWizardPage
FormTemplateWizardPage::FormTemplateWizardPage(QWidget * parent) :
QWizardPage(parent),
m_newFormWidget(QDesignerNewFormWidgetInterface::createNewFormWidget(FormEditorW::instance()->designerEditor())),
m_templateSelected(m_newFormWidget->hasCurrentTemplate())
{
setTitle(tr("Choose a form template"));
QVBoxLayout *layout = new QVBoxLayout;
connect(m_newFormWidget, SIGNAL(currentTemplateChanged(bool)),
this, SLOT(slotCurrentTemplateChanged(bool)));
connect(m_newFormWidget, SIGNAL(templateActivated()),
this, SIGNAL(templateActivated()));
layout->addWidget(m_newFormWidget);
setLayout(layout);
}
bool FormTemplateWizardPage::isComplete() const
{
return m_templateSelected;
}
void FormTemplateWizardPage::slotCurrentTemplateChanged(bool templateSelected)
{
if (m_templateSelected == templateSelected)
return;
m_templateSelected = templateSelected;
emit completeChanged();
}
bool FormTemplateWizardPage::validatePage()
{
QString errorMessage;
m_templateContents = m_newFormWidget->currentTemplate(&errorMessage);
if (m_templateContents.isEmpty()) {
QMessageBox::critical(this, tr("%1 - Error").arg(title()), errorMessage);
return false;
}
return true;
}
QString FormTemplateWizardPage::stripNamespaces(const QString &className)
{
QString rc = className;
const int namespaceIndex = rc.lastIndexOf(QLatin1String("::"));
if (namespaceIndex != -1)
rc.remove(0, namespaceIndex + 2);
return rc;
}
bool FormTemplateWizardPage::getUIXmlData(const QString &uiXml,
QString *formBaseClass,
QString *uiClassName)
{
// Parse UI xml to determine
// 1) The ui class name from "<class>Designer::Internal::FormClassWizardPage</class>"
// 2) the base class from: widget class="QWizardPage"...
QXmlStreamReader reader(uiXml);
while (!reader.atEnd()) {
if (reader.readNext() == QXmlStreamReader::StartElement) {
if (reader.name() == QLatin1String("class")) {
*uiClassName = reader.readElementText();
} else {
if (reader.name() == QLatin1String("widget")) {
const QXmlStreamAttributes attrs = reader.attributes();
*formBaseClass = reader.attributes().value(QLatin1String("class")).toString();
return !uiClassName->isEmpty() && !formBaseClass->isEmpty();
}
}
}
}
return false;
}
#ifdef USE_XSLT
// Change the UI class name in UI xml: This occurs several times, as contents
// of the <class> element, as name of the first <widget> element, and possibly
// in the signal/slot connections
static const char *classNameChangingSheetFormatC =
"<?xml version=\"1.0\"?>\n"
"<xsl:stylesheet xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" version=\"2.0\">\n"
"<xsl:output method=\"xml\" indent=\"yes\" encoding=\"UTF-8\" />\n"
"\n"
"<!-- Grab old class name to be replaced by evaluating <ui><class> -->\n"
"<xsl:param name=\"oldClassName\"><xsl:value-of select=\"/ui/class\"/></xsl:param>\n"
"\n"
"<!-- heavy wizardry to copy nodes and attributes (emulating the default rules) -->\n"
"<xsl:template match=\"@*|node()\">\n"
" <xsl:copy>\n"
" <xsl:apply-templates select=\"@*|node()\"/>\n"
" </xsl:copy>\n"
"</xsl:template>\n"
"\n"
"<!-- Change <ui><class> tag -->\n"
"<xsl:template match=\"class\">\n"
" <xsl:element name=\"class\">\n"
" <xsl:text>%1</xsl:text>\n"
" </xsl:element>\n"
"</xsl:template>\n"
"\n"
"<!-- Change first <widget> tag -->\n"
"<xsl:template match=\"/ui/widget/@name\">\n"
"<xsl:attribute name=\"name\">\n"
"<xsl:text>%1</xsl:text>\n"
"</xsl:attribute>\n"
"</xsl:template>\n"
"\n"
"<!-- Change <sender>/<receiver> elements (for pre-wired QDialog signals) -->\n"
"<xsl:template match=\"receiver[.='Dialog']\">\n"
" <xsl:element name=\"receiver\">\n"
" <xsl:text>%1</xsl:text>\n"
" </xsl:element>\n"
"</xsl:template>\n"
"<xsl:template match=\"sender[.='Dialog']\">\n"
" <xsl:element name=\"sender\">\n"
" <xsl:text>%1</xsl:text>\n"
" </xsl:element>\n"
"</xsl:template>\n"
"</xsl:stylesheet>\n";
QString FormTemplateWizardPage::changeUiClassName(const QString &uiXml, const QString &newUiClassName)
{
// Prepare I/O: Sheet
const QString xsltSheet = QString::fromLatin1(classNameChangingSheetFormatC).arg(newUiClassName);
QByteArray xsltSheetBA = xsltSheet.toUtf8();
QBuffer xsltSheetBuffer(&xsltSheetBA);
xsltSheetBuffer.open(QIODevice::ReadOnly);
// Prepare I/O: Xml
QByteArray xmlBA = uiXml.toUtf8();
QBuffer xmlBuffer(&xmlBA);
xmlBuffer.open(QIODevice::ReadOnly);
// Prepare I/O: output
QBuffer outputBuffer;
outputBuffer.open(QIODevice::WriteOnly);
// Run query
QXmlQuery query(QXmlQuery::XSLT20);
query.setFocus(&xmlBuffer);
query.setQuery(&xsltSheetBuffer);
if (!query.evaluateTo(&outputBuffer)) {
qWarning("Unable to change the ui class name in a form template.\n%s\nUsing:\n%s\n",
xmlBA.constData(), xsltSheetBA.constData());
return uiXml;
}
outputBuffer.close();
return QString::fromUtf8(outputBuffer.data());
}
#else
// Change the contents of a DOM element to a new value if it matches
// a predicate
template <class Predicate>
bool changeDomElementContents(const QDomElement &element,
Predicate p,
const QString &newValue,
QString *ptrToOldValue = 0)
{
// Find text in "<element>text</element>"
const QDomNodeList children = element.childNodes();
if (children.size() != 1)
return false;
const QDomNode first = children.at(0);
if (first.nodeType() != QDomNode::TextNode)
return false;
QDomCharacterData data = first.toCharacterData();
const QString oldValue = data.data();
if (p(oldValue)) {
if (ptrToOldValue)
*ptrToOldValue = oldValue;
data.setData(newValue);
return true;
}
return false;
}
namespace {
bool truePredicate(const QString &) { return true; }
// Predicate that matches a string value
class MatchPredicate {
public:
MatchPredicate(const QString &m) : m_match(m) {}
bool operator()(const QString &s) const { return s == m_match; }
private:
const QString m_match;
};
// Change <sender> and <receiver> in a Dom UI <connections> list
// if they match the class name passed on
void changeDomConnectionList(const QDomElement &connectionsNode,
const QString &oldClassName,
const QString &newClassName)
{
const MatchPredicate oldClassPredicate(oldClassName);
const QString senderTag = QLatin1String("sender");
const QString receiverTag = QLatin1String("receiver");
const QDomNodeList connections = connectionsNode.childNodes();
const int connectionsCount = connections.size();
// Loop <connection>
for (int c = 0; c < connectionsCount; c++) {
const QDomNodeList connectionElements = connections.at(c).childNodes();
const int connectionElementCount = connectionElements.count();
// Loop <sender>, <receiver>, <signal>, <slot>
for (int ce = 0; ce < connectionElementCount; ce++) {
const QDomNode connectionElementNode = connectionElements.at(ce);
if (connectionElementNode.isElement()) {
const QDomElement connectionElement = connectionElementNode.toElement();
const QString tagName = connectionElement.tagName();
if (tagName == senderTag || tagName == receiverTag)
changeDomElementContents(connectionElement, oldClassPredicate, newClassName);
}
}
}
}
}
// Change the UI class name in UI xml: This occurs several times, as contents
// of the <class> element, as name of the first <widget> element, and possibly
// in the signal/slot connections
QString FormTemplateWizardPage::changeUiClassName(const QString &uiXml, const QString &newUiClassName)
{
if (Designer::Constants::Internal::debug)
qDebug() << '>' << Q_FUNC_INFO << newUiClassName;
QDomDocument domUi;
if (!domUi.setContent(uiXml)) {
qWarning("Failed to parse:\n%s", uiXml.toUtf8().constData());
return uiXml;
}
bool firstWidgetElementFound = false;
QString oldClassName;
// Loop first level children. First child is <ui>
const QDomNodeList children = domUi.firstChildElement().childNodes();
const QString classTag = QLatin1String("class");
const QString widgetTag = QLatin1String("widget");
const QString connectionsTag = QLatin1String("connections");
const int count = children.size();
for (int i = 0; i < count; i++) {
const QDomNode node = children.at(i);
if (node.isElement()) {
// Replace <class> element text
QDomElement element = node.toElement();
const QString name = element.tagName();
if (name == classTag) {
if (!changeDomElementContents(element, truePredicate, newUiClassName, &oldClassName)) {
qWarning("Unable to change the <class> element:\n%s", uiXml.toUtf8().constData());
return uiXml;
}
} else {
// Replace first <widget> element name attribute
if (!firstWidgetElementFound && name == widgetTag) {
firstWidgetElementFound = true;
const QString nameAttribute = QLatin1String("name");
if (element.hasAttribute(nameAttribute))
element.setAttribute(nameAttribute, newUiClassName);
} else {
// Replace <sender>, <receiver> tags of dialogs.
if (name == connectionsTag)
changeDomConnectionList(element, oldClassName, newUiClassName);
}
}
}
}
const QString rc = domUi.toString();
if (Designer::Constants::Internal::debug > 1)
qDebug() << '<' << Q_FUNC_INFO << newUiClassName << rc;
return rc;
}
#endif // USE_XSLT
} // namespace Internal
} // namespace Designer
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