Fix Gui app wizard to write form classes consistent with Designer.

Make Gui app wizard use Qt Designer wizard code to write the classes.
Remove the settings from the form class wizard page extension area and
add a settings page instead. Polish the designer plugin's structs to
parametrize class generation with QSharedData and settings code.
Export them and use them in the Gui app wizard.

Task-number: 256927

src/plugins/designer/cpp/cppsettingspage.cpp

@@ -0,0 +1,136 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+**
+**************************************************************************/
+
+#include "cppsettingspage.h"
+#include "designerconstants.h"
+
+#include <QtCore/QCoreApplication>
+#include <coreplugin/icore.h>
+
+namespace Designer {
+namespace Internal {
+
+// ---------- CppSettingsPageWidget
+
+CppSettingsPageWidget::CppSettingsPageWidget(QWidget *parent) :
+        QWidget(parent)
+{
+    m_ui.setupUi(this);
+}
+
+FormClassWizardGenerationParameters CppSettingsPageWidget::parameters() const
+{
+    FormClassWizardGenerationParameters rc;
+    rc.setEmbedding(static_cast<FormClassWizardGenerationParameters::UiClassEmbedding>(uiEmbedding()));
+    rc.setRetranslationSupport(m_ui.retranslateCheckBox->isChecked());
+    rc.setIncludeQtModule(m_ui.includeQtModuleCheckBox->isChecked());
+    return rc;
+}
+
+void CppSettingsPageWidget::setParameters(const FormClassWizardGenerationParameters &p)
+{
+    m_ui.retranslateCheckBox->setChecked(p.retranslationSupport());
+    m_ui.includeQtModuleCheckBox->setChecked(p.includeQtModule());
+    setUiEmbedding(p.embedding());
+}
+
+int CppSettingsPageWidget::uiEmbedding() const
+{
+    if (m_ui.ptrAggregationRadioButton->isChecked())
+        return FormClassWizardGenerationParameters::PointerAggregatedUiClass;
+    if (m_ui.aggregationButton->isChecked())
+        return FormClassWizardGenerationParameters::AggregatedUiClass;
+    return FormClassWizardGenerationParameters::InheritedUiClass;
+}
+
+void CppSettingsPageWidget::setUiEmbedding(int v)
+{
+    switch (v) {
+    case FormClassWizardGenerationParameters::PointerAggregatedUiClass:
+        m_ui.ptrAggregationRadioButton->setChecked(true);
+        break;
+    case FormClassWizardGenerationParameters::AggregatedUiClass:
+        m_ui.aggregationButton->setChecked(true);
+        break;
+    case FormClassWizardGenerationParameters::InheritedUiClass:
+        m_ui.multipleInheritanceButton->setChecked(true);
+        break;
+    }
+}
+
+// ---------- CppSettingsPage
+CppSettingsPage::CppSettingsPage(QObject *parent) : Core::IOptionsPage(parent)
+{
+    m_parameters.fromSettings(Core::ICore::instance()->settings());
+}
+
+QString CppSettingsPage::id() const
+{
+    return QLatin1String(Designer::Constants::SETTINGS_CPP_SETTINGS);
+}
+
+QString CppSettingsPage::trName() const
+{
+    return QCoreApplication::translate("Designer", Designer::Constants::SETTINGS_CPP_SETTINGS);
+}
+
+QString CppSettingsPage::category() const
+{
+    return QLatin1String(Designer::Constants::SETTINGS_CATEGORY);
+}
+
+QString CppSettingsPage::trCategory() const
+{
+    return QCoreApplication::translate("Designer", Designer::Constants::SETTINGS_CATEGORY);
+}
+
+QWidget *CppSettingsPage::createPage(QWidget *parent)
+{
+    m_widget = new CppSettingsPageWidget(parent);
+    m_widget->setParameters(m_parameters);
+    return m_widget;
+}
+
+void CppSettingsPage::apply()
+{
+    if (m_widget) {
+        const FormClassWizardGenerationParameters newParameters = m_widget->parameters();
+        if (newParameters != m_parameters) {
+            m_parameters = newParameters;
+            m_parameters.toSettings(Core::ICore::instance()->settings());
+        }
+    }
+}
+
+void CppSettingsPage::finish()
+{
+}
+
+} // namespace Internal
+} // namespace Designer