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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "qdesigner_widgetbox_p.h"
#include "qdesigner_utils_p.h"
#include <QtDesigner/private/ui4_p.h>
#include <QtCore/qregularexpression.h>
#include <QtCore/qdebug.h>
#include <QtCore/qxmlstream.h>
#include <QtCore/qshareddata.h>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
class QDesignerWidgetBoxWidgetData : public QSharedData
{
public:
QDesignerWidgetBoxWidgetData(const QString &aname, const QString &xml,
const QString &icon_name,
QDesignerWidgetBoxInterface::Widget::Type atype);
QString m_name;
QString m_xml;
QString m_icon_name;
QDesignerWidgetBoxInterface::Widget::Type m_type;
};
QDesignerWidgetBoxWidgetData::QDesignerWidgetBoxWidgetData(const QString &aname,
const QString &xml,
const QString &icon_name,
QDesignerWidgetBoxInterface::Widget::Type atype) :
m_name(aname), m_xml(xml), m_icon_name(icon_name), m_type(atype)
{
}
QDesignerWidgetBoxInterface::Widget::Widget(const QString &aname, const QString &xml,
const QString &icon_name, Type atype) :
m_data(new QDesignerWidgetBoxWidgetData(aname, xml, icon_name, atype))
{
}
QDesignerWidgetBoxInterface::Widget::~Widget() = default;
QDesignerWidgetBoxInterface::Widget::Widget(const Widget &w) :
m_data(w.m_data)
{
}
QDesignerWidgetBoxInterface::Widget &QDesignerWidgetBoxInterface::Widget::operator=(const Widget &rhs)
{
if (this != &rhs) {
m_data = rhs.m_data;
}
return *this;
}
QString QDesignerWidgetBoxInterface::Widget::name() const
{
return m_data->m_name;
}
void QDesignerWidgetBoxInterface::Widget::setName(const QString &aname)
{
if (m_data->m_name != aname)
m_data->m_name = aname;
}
QString QDesignerWidgetBoxInterface::Widget::domXml() const
{
return m_data->m_xml;
}
void QDesignerWidgetBoxInterface::Widget::setDomXml(const QString &xml)
{
if (m_data->m_xml != xml)
m_data->m_xml = xml;
}
QString QDesignerWidgetBoxInterface::Widget::iconName() const
{
return m_data->m_icon_name;
}
void QDesignerWidgetBoxInterface::Widget::setIconName(const QString &icon_name)
{
if (m_data->m_icon_name != icon_name)
m_data->m_icon_name = icon_name;
}
QDesignerWidgetBoxInterface::Widget::Type QDesignerWidgetBoxInterface::Widget::type() const
{
return m_data->m_type;
}
void QDesignerWidgetBoxInterface::Widget::setType(Type atype)
{
if (m_data->m_type != atype)
m_data->m_type = atype;
}
bool QDesignerWidgetBoxInterface::Widget::isNull() const
{
return m_data->m_name.isEmpty();
}
namespace qdesigner_internal {
QDesignerWidgetBox::QDesignerWidgetBox(QWidget *parent, Qt::WindowFlags flags)
: QDesignerWidgetBoxInterface(parent, flags)
{
}
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
QString pattern = QStringLiteral("^<widget\\s+class\\s*=\\s*\"");
pattern += className;
pattern += QStringLiteral("\".*$");
const QRegularExpression 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 auto widgetTagIndex = xml.indexOf("<widget"_L1);
if (widgetTagIndex != -1) {
xml.remove(0, widgetTagIndex);
if (regexp.match(xml).hasMatch()) {
*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 = nullptr;
// The xml description must either contain a root element "ui" with a child element "widget"
// or "widget" as the root element (4.3 legacy)
while (!reader.atEnd()) {
if (reader.readNext() == QXmlStreamReader::StartElement) {
const auto name = reader.name();
if (ui) {
reader.raiseError(tr("Unexpected element <%1>").arg(name.toString()));
continue;
}
if (name.compare("widget"_L1, 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("ui"_L1, 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, reader.errorString(), xml);
return nullptr;
}
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, xml);
return nullptr;
}
if (insertFakeTopLevel) {
DomWidget *fakeTopLevel = new DomWidget;
fakeTopLevel->setAttributeClass(u"QWidget"_s);
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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