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Diffstat (limited to 'src/imports/dialogs/plugin.cpp')
| -rw-r--r-- | src/imports/dialogs/plugin.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/imports/dialogs/plugin.cpp b/src/imports/dialogs/plugin.cpp new file mode 100644 index 0000000000..46bd0dcb9d --- /dev/null +++ b/src/imports/dialogs/plugin.cpp @@ -0,0 +1,140 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtQml/qqml.h> +#include <QtQml/qqmlextensionplugin.h> +#include "qquickfiledialog_p.h" +#include "qquickabstractfiledialog_p.h" +#include "qquickplatformfiledialog_p.h" +#include <private/qguiapplication_p.h> + +//#define PURE_QML_ONLY + +QT_BEGIN_NAMESPACE + +/*! + \qmlmodule QtQuick.Dialogs 1 + \title Qt Quick Dialog QML Types + \ingroup qmlmodules + \brief Provides QML types for standard file, color picker and message dialogs + + This QML module contains types for creating and interacting with system dialogs. + + To use the types in this module, import the module with the following line: + + \code + import QtQuick.Dialogs 1.0 + \endcode +*/ + +class QtQuick2DialogsPlugin : public QQmlExtensionPlugin +{ + Q_OBJECT + Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface/1.0") + +public: + QtQuick2DialogsPlugin() : QQmlExtensionPlugin() { } + + virtual void initializeEngine(QQmlEngine *, const char *uri) { + bool needQml = false; + QDir qmlDir(baseUrl().toLocalFile()); + // If there is no support for native dialogs on the platform, we need to + // either re-use QFileDialog, or register a QML implementation instead. +#ifdef PURE_QML_ONLY + needQml = true; +#else + if (!QGuiApplicationPrivate::platformTheme()->usePlatformNativeDialog(QPlatformTheme::FileDialog)) { + needQml = true; + // If there is not a QApplication, there's no point in trying to load + // widget-based dialogs, because a runtime error will occur. + if (QCoreApplication::instance()->metaObject()->className() == QLatin1String("QApplication")) { + // Test whether PrivateWidgets can load. It's not currently possible + // to use the given engine for that, so we need to create a temporary one. + // That doesn't work in registerTypes either, which is why it's done here. + QString dialogQmlPath(qmlDir.filePath("WidgetFileDialog.qml")); + QQmlEngine tempEngine; + QQmlComponent widgetDialogComponent(&tempEngine); + QFile widgetDialogQmlFile(dialogQmlPath); + widgetDialogQmlFile.open(QIODevice::ReadOnly); + widgetDialogComponent.setData(widgetDialogQmlFile.readAll(), QUrl()); + + switch (widgetDialogComponent.status()) { + case QQmlComponent::Ready: + needQml = (qmlRegisterType(QUrl::fromLocalFile(dialogQmlPath), uri, 1, 0, "FileDialog") < 0); + // returns -1 unless we omit the module from qmldir, because otherwise + // QtQuick.Dialogs is already a protected namespace + // after the qmldir having been parsed. (QQmlImportDatabase::importPlugin) + // But omitting the module from qmldir results in this warning: + // "Module 'QtQuick.Dialogs' does not contain a module identifier directive - + // it cannot be protected from external registrations." + // TODO register all types in registerTypes, to avoid the warning + // But, in that case we cannot check for existence by trying to instantiate the component. + // So it will have to just look for a file (qmldir?) and assume + // that whatever modules are installed are also in working order. + break; + default: + break; + } + } + } +#endif + if (needQml) { + QString dialogQmlPath = qmlDir.filePath("DefaultFileDialog.qml"); + qmlRegisterType<QQuickFileDialog>(uri, 1, 0, "AbstractFileDialog"); // implementation wrapper + // qDebug() << "registering FileDialog as " << dialogQmlPath << "success?" << + qmlRegisterType(QUrl::fromLocalFile(dialogQmlPath), uri, 1, 0, "FileDialog"); + } + } + + virtual void registerTypes(const char *uri) { + Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.Dialogs")); + +#ifndef PURE_QML_ONLY + // Prefer the QPA file dialog helper if the platform supports it + if (QGuiApplicationPrivate::platformTheme()->usePlatformNativeDialog(QPlatformTheme::FileDialog)) + qmlRegisterType<QQuickPlatformFileDialog>(uri, 1, 0, "FileDialog"); +#endif + } +}; + +QT_END_NAMESPACE + +#include "plugin.moc" |