Add new ModelEditor plugin.

The plugin is based on the 'modelinglib' library. For features and
screenshots see https://wiki.qt.io/ModelEditor

Change-Id: I857be0652a852cc69a9729f64e67134fe630af00
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/modeleditor/modeleditor_plugin.cpp

@@ -0,0 +1,151 @@
+/***************************************************************************
+**
+** Copyright (C) 2015 Jochen Becher
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qt Creator.
+**
+** 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 The Qt Company.  For licensing terms and
+** conditions see http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "modeleditor_plugin.h"
+
+#include "diagrameditorfactory.h"
+#include "modeleditorfactory.h"
+#include "modelsmanager.h"
+#include "settingscontroller.h"
+#include "modeleditor_constants.h"
+#include "modeleditor_file_wizard.h"
+#include "uicontroller.h"
+
+#include "qmt/infrastructure/uid.h"
+
+#include <coreplugin/actionmanager/actioncontainer.h>
+#include <coreplugin/actionmanager/actionmanager.h>
+#include <coreplugin/actionmanager/command.h>
+#include <coreplugin/basefilewizard.h>
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/icontext.h>
+#include <coreplugin/icore.h>
+
+#include <utils/mimetypes/mimedatabase.h>
+
+#include <QAction>
+#include <QApplication>
+#include <QMessageBox>
+#include <QMainWindow>
+#include <QMenu>
+#include <QItemSelection>
+#include <QClipboard>
+#include <QFontDatabase>
+
+#include <QtPlugin>
+
+namespace ModelEditor {
+namespace Internal {
+
+ModelEditorPlugin *pluginInstance = 0;
+
+class ModelEditorPlugin::ModelEditorPluginPrivate
+{
+public:
+    ModelsManager *modelsManager = 0;
+    UiController *uiController = 0;
+    ModelEditorFactory *modelFactory = 0;
+    DiagramEditorFactory *diagramFactory = 0;
+    SettingsController *settingsController = 0;
+};
+
+ModelEditorPlugin::ModelEditorPlugin()
+    : ExtensionSystem::IPlugin(),
+      d(new ModelEditorPluginPrivate)
+{
+    pluginInstance = this;
+    qRegisterMetaType<QItemSelection>("QItemSelection");
+    qRegisterMetaType<qmt::Uid>("qmt::Uid");
+}
+
+ModelEditorPlugin::~ModelEditorPlugin()
+{
+    delete d;
+}
+
+bool ModelEditorPlugin::initialize(const QStringList &arguments, QString *errorString)
+{
+    Q_UNUSED(arguments);
+    Q_UNUSED(errorString);
+
+    Utils::MimeDatabase::addMimeTypes(QStringLiteral(":/modeleditor/modeleditor.mimetypes.xml"));
+
+    d->modelsManager = new ModelsManager(this);
+    addAutoReleasedObject(d->modelsManager);
+
+    d->uiController = new UiController(this);
+    addAutoReleasedObject(d->uiController);
+
+    Core::IWizardFactory::registerFactoryCreator([]() {
+        return QList<Core::IWizardFactory *>() << new FileWizardFactory;
+    });
+
+    d->modelFactory = new ModelEditorFactory(d->uiController, this);
+    addAutoReleasedObject(d->modelFactory);
+
+    d->diagramFactory = new DiagramEditorFactory(d->uiController, this);
+    addAutoReleasedObject(d->diagramFactory);
+
+    d->settingsController = new SettingsController(this);
+    addAutoReleasedObject(d->settingsController);
+
+    connect(d->settingsController, &SettingsController::saveSettings,
+            d->uiController, &UiController::saveSettings);
+    connect(d->settingsController, &SettingsController::loadSettings,
+            d->uiController, &UiController::loadSettings);
+
+    return true;
+}
+
+void ModelEditorPlugin::extensionsInitialized()
+{
+    // Retrieve objects from the plugin manager's object pool
+    // In the extensionsInitialized method, a plugin can be sure that all
+    // plugins that depend on it are completely initialized.
+    d->modelFactory->extensionsInitialized();
+    d->diagramFactory->extensionsInitialized();
+    d->settingsController->load(Core::ICore::settings());
+}
+
+ExtensionSystem::IPlugin::ShutdownFlag ModelEditorPlugin::aboutToShutdown()
+{
+    d->settingsController->save(Core::ICore::settings());
+    QApplication::clipboard()->clear();
+    return SynchronousShutdown;
+}
+
+ModelsManager *ModelEditorPlugin::modelsManager()
+{
+    return pluginInstance->d->modelsManager;
+}
+
+} // namespace Internal
+} // namespace ModelEditor
+