// 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)
{
QDomDocument doc;
int errorLine, errorColumn;
if (!doc.setContent(xml, errorMessage, &errorLine, &errorColumn)) {
*errorMessage = QObject::tr("A parse error occurred at line %1, column %2 of the XML code specified for the widget %3: %4\n%5").
arg(errorLine).arg(errorColumn).arg(name).arg(*errorMessage).arg(xml);
return 0;
}
if (!doc.hasChildNodes()) {
*errorMessage = QObject::tr("The XML code specified for the widget %1 does not contain any widget elements.\n%2").arg(name).arg(xml);
return 0;
}
QDomElement rootElement = doc.firstChildElement();
const QString rootNode = rootElement.nodeName();
const QString widgetTag = QLatin1String("widget");
if (rootNode == widgetTag) { // 4.3 legacy ,wrap into DomUI
DomUI *rc = new DomUI;
DomWidget *widget = new DomWidget;
widget->read(rootElement);
if (insertFakeTopLevel) {
DomWidget *fakeTopLevel = new DomWidget;
QList<DomWidget *> children;
children.push_back(widget);
fakeTopLevel->setElementWidget(children);
rc->setElementWidget(fakeTopLevel);
} else {
rc->setElementWidget(widget);
}
return rc;
}
if (rootNode == QLatin1String("ui")) { // 4.4
QDomElement widgetChild = rootElement.firstChildElement(widgetTag);
if (widgetChild.isNull()) {
*errorMessage = QObject::tr("The XML code specified for the widget %1 does not contain valid widget element\n%2").arg(name).arg(xml);
return 0;
}
if (insertFakeTopLevel) {
QDomElement fakeTopLevel = doc.createElement(widgetTag);
rootElement.replaceChild(fakeTopLevel, widgetChild);
fakeTopLevel.appendChild(widgetChild);
}
DomUI *rc = new DomUI;
rc->read(rootElement);
return rc;
}
*errorMessage = QObject::tr("The XML code specified for the widget %1 contains an invalid root element %2.\n%3").arg(name).arg(rootNode).arg(xml);
return 0;
}
