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Diffstat (limited to 'src/designer/src/lib/shared/qdesigner_widgetbox.cpp')
| -rw-r--r-- | src/designer/src/lib/shared/qdesigner_widgetbox.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/designer/src/lib/shared/qdesigner_widgetbox.cpp b/src/designer/src/lib/shared/qdesigner_widgetbox.cpp new file mode 100644 index 000000000..154b2d61d --- /dev/null +++ b/src/designer/src/lib/shared/qdesigner_widgetbox.cpp @@ -0,0 +1,181 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 |