Designer: Remove FormEditorW class

Just wrapped static functions.

Change-Id: Ic60a2d7185aab5576e48894c74a9314a4b1c2324
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

11 files changed, 77 insertions, 79 deletions

diff --git a/src/plugins/designer/designercontext.cpp b/src/plugins/designer/designercontext.cpp
index de65df8a20..4c4587defe 100644
--- a/src/plugins/designer/designercontext.cpp
+++ b/src/plugins/designer/designercontext.cpp
@@ -25,7 +25,7 @@ DesignerContext::DesignerContext(const Core::Context &context,
 
 void DesignerContext::contextHelp(const HelpCallback &callback) const
 {
-    const QDesignerFormEditorInterface *core = FormEditorW::designerEditor();
+    const QDesignerFormEditorInterface *core = designerEditor();
     callback(core->integration()->contextHelpId());
 }
 
diff --git a/src/plugins/designer/editorwidget.cpp b/src/plugins/designer/editorwidget.cpp
index f1b1772fc2..9869904287 100644
--- a/src/plugins/designer/editorwidget.cpp
+++ b/src/plugins/designer/editorwidget.cpp
@@ -28,7 +28,7 @@ EditorWidget::EditorWidget(QWidget *parent) :
     setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
     setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);
 
-    QWidget * const*subs = FormEditorW::designerSubWindows();
+    QWidget * const * subs = designerSubWindows();
     for (int i = 0; i < DesignerSubWindowCount; i++) {
         QWidget *subWindow = subs[i];
         subWindow->setWindowTitle(subs[i]->windowTitle());
diff --git a/src/plugins/designer/formeditorfactory.cpp b/src/plugins/designer/formeditorfactory.cpp
index beace0702e..5a650d8582 100644
--- a/src/plugins/designer/formeditorfactory.cpp
+++ b/src/plugins/designer/formeditorfactory.cpp
@@ -1,18 +1,16 @@
 // 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 "designertr.h"
 #include "formeditorfactory.h"
+
+#include "designerconstants.h"
+#include "designertr.h"
 #include "formeditorw.h"
-#include "formwindoweditor.h"
 
 #include <coreplugin/coreconstants.h>
 #include <projectexplorer/projectexplorerconstants.h>
 #include <utils/fsengine/fileiconprovider.h>
 
-#include <QCoreApplication>
-#include <QDebug>
-
 using namespace Core;
 using namespace Designer::Constants;
 using namespace Utils;
@@ -25,7 +23,7 @@ FormEditorFactory::FormEditorFactory()
     setId(K_DESIGNER_XML_EDITOR_ID);
     setDisplayName(Tr::tr(C_DESIGNER_XML_DISPLAY_NAME));
     addMimeType(FORM_MIMETYPE);
-    setEditorCreator([] { return  FormEditorW::createEditor(); });
+    setEditorCreator([] { return Designer::Internal::createEditor(); });
 
     FileIconProvider::registerIconOverlayForSuffix(ProjectExplorer::Constants::FILEOVERLAY_UI, "ui");
 }
diff --git a/src/plugins/designer/formeditorplugin.cpp b/src/plugins/designer/formeditorplugin.cpp
index 8d26f27f0f..8db713457d 100644
--- a/src/plugins/designer/formeditorplugin.cpp
+++ b/src/plugins/designer/formeditorplugin.cpp
@@ -1,9 +1,11 @@
 // 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 "formeditorplugin.h"
+
+#include "designerconstants.h"
 #include "designertr.h"
 #include "formeditorfactory.h"
-#include "formeditorplugin.h"
 #include "formeditorw.h"
 #include "formtemplatewizardpage.h"
 
@@ -54,7 +56,7 @@ public:
 
 FormEditorPlugin::~FormEditorPlugin()
 {
-    FormEditorW::deleteInstance();
+    deleteInstance();
     delete d;
 }
 
diff --git a/src/plugins/designer/formeditorstack.cpp b/src/plugins/designer/formeditorstack.cpp
index 9325827f87..585e607d83 100644
--- a/src/plugins/designer/formeditorstack.cpp
+++ b/src/plugins/designer/formeditorstack.cpp
@@ -2,6 +2,8 @@
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
 #include "formeditorstack.h"
+
+#include "designerconstants.h"
 #include "formwindoweditor.h"
 #include "formeditorw.h"
 #include "formwindowfile.h"
diff --git a/src/plugins/designer/formeditorw.cpp b/src/plugins/designer/formeditorw.cpp
index a55b93d71f..242e77772f 100644
--- a/src/plugins/designer/formeditorw.cpp
+++ b/src/plugins/designer/formeditorw.cpp
@@ -123,9 +123,9 @@ public:
     }
 };
 
-// --------- FormEditorW
+// FormEditorData
 
-class FormEditorData
+class FormEditorData : public QObject
 {
 public:
     FormEditorData();
@@ -173,7 +173,7 @@ public:
     QDesignerFormEditorInterface *m_formeditor = nullptr;
     QtCreatorIntegration *m_integration = nullptr;
     QDesignerFormWindowManagerInterface *m_fwm = nullptr;
-    FormEditorW::InitializationStage m_initStage = FormEditorW::RegisterPlugins;
+    InitializationStage m_initStage = RegisterPlugins;
 
     QWidget *m_designerSubWindows[DesignerSubWindowCount];
 
@@ -202,7 +202,6 @@ public:
 };
 
 static FormEditorData *d = nullptr;
-static FormEditorW *m_instance = nullptr;
 
 FormEditorData::FormEditorData() :
     m_formeditor(QDesignerComponents::createFormEditor(nullptr))
@@ -238,7 +237,7 @@ FormEditorData::FormEditorData() :
         if (editor && editor->document()->id() == Constants::K_DESIGNER_XML_EDITOR_ID) {
             FormWindowEditor *xmlEditor = qobject_cast<FormWindowEditor *>(editor);
             QTC_ASSERT(xmlEditor, return);
-            FormEditorW::ensureInitStage(FormEditorW::FullyInitialized);
+            ensureInitStage(FullyInitialized);
             SharedTools::WidgetHost *fw = m_editorWidget->formWindowEditorForXmlEditor(xmlEditor);
             QTC_ASSERT(fw, return);
             m_editorWidget->setVisibleEditor(xmlEditor);
@@ -251,7 +250,7 @@ FormEditorData::FormEditorData() :
 
 FormEditorData::~FormEditorData()
 {
-    if (m_initStage == FormEditorW::FullyInitialized) {
+    if (m_initStage == FullyInitialized) {
         QSettings *s = ICore::settings();
         s->beginGroup(settingsGroupC);
         m_editorWidget->saveSettings(s);
@@ -324,18 +323,18 @@ void FormEditorData::setupViewActions()
 
 void FormEditorData::fullInit()
 {
-    QTC_ASSERT(m_initStage == FormEditorW::RegisterPlugins, return);
+    QTC_ASSERT(m_initStage == RegisterPlugins, return);
     QElapsedTimer *initTime = nullptr;
     if (Designer::Constants::Internal::debug) {
         initTime = new QElapsedTimer;
         initTime->start();
     }
 
-    QDesignerComponents::createTaskMenu(m_formeditor, m_instance);
+    QDesignerComponents::createTaskMenu(m_formeditor, this);
     QDesignerComponents::initializePlugins(m_formeditor);
     QDesignerComponents::initializeResources();
     initDesignerSubWindows();
-    m_integration = new QtCreatorIntegration(m_formeditor, m_instance);
+    m_integration = new QtCreatorIntegration(m_formeditor, this);
     m_formeditor->setIntegration(m_integration);
     // Connect Qt Designer help request to HelpManager.
     QObject::connect(m_integration, &QtCreatorIntegration::creatorHelpRequested,
@@ -397,13 +396,13 @@ void FormEditorData::fullInit()
 
     Context designerContexts = m_contexts;
     designerContexts.add(Core::Constants::C_EDITORMANAGER);
-    ICore::addContextObject(new DesignerContext(designerContexts, m_modeWidget, m_instance));
+    ICore::addContextObject(new DesignerContext(designerContexts, m_modeWidget, this));
 
     DesignMode::registerDesignWidget(m_modeWidget, QStringList(FORM_MIMETYPE), m_contexts);
 
     setupViewActions();
 
-    m_initStage = FormEditorW::FullyInitialized;
+    m_initStage = FullyInitialized;
 }
 
 void FormEditorData::initDesignerSubWindows()
@@ -438,22 +437,21 @@ void FormEditorData::initDesignerSubWindows()
     ae->setObjectName("ActionEditor");
     m_formeditor->setActionEditor(ae);
     m_designerSubWindows[ActionEditorSubWindow] = ae;
-    m_initStage = FormEditorW::SubwindowsInitialized;
+    m_initStage = SubwindowsInitialized;
 }
 
-QList<IOptionsPage *> FormEditorW::optionsPages()
+QList<IOptionsPage *> optionsPages()
 {
     return d->m_settingsPages;
 }
 
-void FormEditorW::ensureInitStage(InitializationStage s)
+void ensureInitStage(InitializationStage s)
 {
     if (Designer::Constants::Internal::debug)
         qDebug() << Q_FUNC_INFO << s;
-    if (!d) {
-        m_instance = new FormEditorW;
+    if (!d)
         d = new FormEditorData;
-    }
+
     if (d->m_initStage >= s)
         return;
     QApplication::setOverrideCursor(Qt::WaitCursor);
@@ -461,15 +459,13 @@ void FormEditorW::ensureInitStage(InitializationStage s)
     QApplication::restoreOverrideCursor();
 }
 
-void FormEditorW::deleteInstance()
+void deleteInstance()
 {
     delete d;
     d = nullptr;
-    delete m_instance;
-    m_instance = nullptr;
 }
 
-IEditor *FormEditorW::createEditor()
+IEditor *createEditor()
 {
     ensureInitStage(FullyInitialized);
     return d->createEditor();
@@ -489,7 +485,7 @@ void FormEditorData::setupActions()
     bindShortcut(ActionManager::registerAction(m_fwm->actionPaste(), Core::Constants::PASTE, m_contexts), m_fwm->actionPaste());
     bindShortcut(ActionManager::registerAction(m_fwm->actionSelectAll(), Core::Constants::SELECTALL, m_contexts), m_fwm->actionSelectAll());
 
-    m_actionPrint = new QAction(m_instance);
+    m_actionPrint = new QAction(this);
     bindShortcut(ActionManager::registerAction(m_actionPrint, Core::Constants::PRINT, m_contexts), m_actionPrint);
     QObject::connect(m_actionPrint, &QAction::triggered, [this]() { print(); });
 
@@ -502,7 +498,7 @@ void FormEditorData::setupActions()
     command->setAttribute(Command::CA_Hide);
     medit->addAction(command, Core::Constants::G_EDIT_COPYPASTE);
 
-    m_actionGroupEditMode = new QActionGroup(m_instance);
+    m_actionGroupEditMode = new QActionGroup(this);
     m_actionGroupEditMode->setExclusive(true);
     QObject::connect(m_actionGroupEditMode, &QActionGroup::triggered,
             [this](QAction *a) { activateEditMode(a->data().toInt()); });
@@ -601,7 +597,7 @@ void FormEditorData::setupActions()
                   QString(), Core::Constants::G_DEFAULT_THREE);
 
     mformtools->addSeparator(m_contexts, Core::Constants::G_DEFAULT_THREE);
-    m_actionAboutPlugins = new QAction(Tr::tr("About Qt Designer Plugins..."), m_instance);
+    m_actionAboutPlugins = new QAction(Tr::tr("About Qt Designer Plugins..."), d);
     addToolAction(m_actionAboutPlugins, m_contexts, "FormEditor.AboutPlugins", mformtools,
                   QString(), Core::Constants::G_DEFAULT_THREE);
     QObject::connect(m_actionAboutPlugins, &QAction::triggered,
@@ -760,19 +756,19 @@ IEditor *FormEditorData::createEditor()
     return formWindowEditor;
 }
 
-QDesignerFormEditorInterface *FormEditorW::designerEditor()
+QDesignerFormEditorInterface *designerEditor()
 {
     ensureInitStage(FullyInitialized);
     return d->m_formeditor;
 }
 
-QWidget * const *FormEditorW::designerSubWindows()
+QWidget * const *designerSubWindows()
 {
     ensureInitStage(SubwindowsInitialized);
     return d->m_designerSubWindows;
 }
 
-SharedTools::WidgetHost *FormEditorW::activeWidgetHost()
+SharedTools::WidgetHost *activeWidgetHost()
 {
     ensureInitStage(FullyInitialized);
     if (d->m_editorWidget)
@@ -780,7 +776,7 @@ SharedTools::WidgetHost *FormEditorW::activeWidgetHost()
     return nullptr;
 }
 
-FormWindowEditor *FormEditorW::activeEditor()
+FormWindowEditor *activeEditor()
 {
     ensureInitStage(FullyInitialized);
     if (d->m_editorWidget)
diff --git a/src/plugins/designer/formeditorw.h b/src/plugins/designer/formeditorw.h
index 50462c2aa1..0d069e2322 100644
--- a/src/plugins/designer/formeditorw.h
+++ b/src/plugins/designer/formeditorw.h
@@ -3,12 +3,11 @@
 
 #pragma once
 
-#include "designerconstants.h"
-
-#include <QObject>
+#include <QtGlobal>
 
 QT_BEGIN_NAMESPACE
 class QDesignerFormEditorInterface;
+class QWidget;
 QT_END_NAMESPACE
 
 namespace Core {
@@ -24,11 +23,10 @@ class FormWindowEditor;
 
 namespace Internal {
 
-/** FormEditorW is a singleton that stores the Designer CoreInterface and
-  * performs centralized operations. The instance() function will return an
-  * instance. However, it must be manually deleted when unloading the
-  * plugin. Since fully initializing Designer at startup is expensive, the
-  * class has an internal partial initialisation stage "RegisterPlugins"
+/** This is an interface to the Designer CoreInterface to
+  * performs centralized operations.
+  * Since fully initializing Designer at startup is expensive, the
+  * setup has an internal partial initialization stage "RegisterPlugins"
   * which is there to register the Creator plugin objects
   * that must be present at startup (settings pages, actions).
   * The plugin uses this stage at first by calling ensureInitStage().
@@ -38,32 +36,29 @@ namespace Internal {
   *
   * The form editor shows a read-only XML editor in edit mode and Qt Designer
   * in Design mode. */
-class FormEditorW : public QObject
-{
-public:
-    enum InitializationStage {
-        // Register Creator plugins (settings pages, actions)
-        RegisterPlugins,
-        // Subwindows of the designer are initialized
-        SubwindowsInitialized,
-        // Fully initialized for handling editor requests
-        FullyInitialized
-    };
 
-    // Create an instance and initialize up to stage s
-    static void ensureInitStage(InitializationStage s);
-    // Deletes an existing instance if there is one.
-    static void deleteInstance();
+enum InitializationStage {
+    // Register Creator plugins (settings pages, actions)
+    RegisterPlugins,
+    // Subwindows of the designer are initialized
+    SubwindowsInitialized,
+    // Fully initialized for handling editor requests
+    FullyInitialized
+};
+
+// Create an instance and initialize up to stage s
+void ensureInitStage(InitializationStage s);
+// Deletes an existing instance if there is one.
+void deleteInstance();
 
-    static Core::IEditor *createEditor();
+Core::IEditor *createEditor();
 
-    static QDesignerFormEditorInterface *designerEditor();
-    static QWidget * const *designerSubWindows();
+QDesignerFormEditorInterface *designerEditor();
+QWidget * const *designerSubWindows();
 
-    static SharedTools::WidgetHost *activeWidgetHost();
-    static FormWindowEditor *activeEditor();
-    static QList<Core::IOptionsPage *> optionsPages();
-};
+SharedTools::WidgetHost *activeWidgetHost();
+FormWindowEditor *activeEditor();
+QList<Core::IOptionsPage *> optionsPages();
 
 } // namespace Internal
 } // namespace Designer
diff --git a/src/plugins/designer/formtemplatewizardpage.cpp b/src/plugins/designer/formtemplatewizardpage.cpp
index c6417522f4..fd13a6f1cc 100644
--- a/src/plugins/designer/formtemplatewizardpage.cpp
+++ b/src/plugins/designer/formtemplatewizardpage.cpp
@@ -58,7 +58,7 @@ bool FormPageFactory::validateData(Utils::Id typeId, const QVariant &data, QStri
 
 FormTemplateWizardPage::FormTemplateWizardPage(QWidget * parent) :
     Utils::WizardPage(parent),
-    m_newFormWidget(QDesignerNewFormWidgetInterface::createNewFormWidget(FormEditorW::designerEditor())),
+    m_newFormWidget(QDesignerNewFormWidgetInterface::createNewFormWidget(designerEditor())),
     m_templateSelected(m_newFormWidget->hasCurrentTemplate())
 {
     setTitle(Tr::tr("Choose a Form Template"));
diff --git a/src/plugins/designer/gotoslot_test.cpp b/src/plugins/designer/gotoslot_test.cpp
index f4562a41e7..89740601e0 100644
--- a/src/plugins/designer/gotoslot_test.cpp
+++ b/src/plugins/designer/gotoslot_test.cpp
@@ -147,7 +147,7 @@ public:
         waitForFilesInGlobalSnapshot({cppFile, hFile});
 
         // Execute "Go To Slot"
-        QDesignerIntegrationInterface *integration = FormEditorW::designerEditor()->integration();
+        QDesignerIntegrationInterface *integration = designerEditor()->integration();
         QVERIFY(integration);
         integration->emitNavigateToSlot("pushButton", "clicked()", QStringList());
 
diff --git a/src/plugins/designer/qtcreatorintegration.cpp b/src/plugins/designer/qtcreatorintegration.cpp
index 60189282ce..2930f7787f 100644
--- a/src/plugins/designer/qtcreatorintegration.cpp
+++ b/src/plugins/designer/qtcreatorintegration.cpp
@@ -1,10 +1,13 @@
 // 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 "qtcreatorintegration.h"
+
+#include "designerconstants.h"
 #include "designertr.h"
 #include "formeditorw.h"
 #include "formwindoweditor.h"
-#include "qtcreatorintegration.h"
+
 #include <widgethost.h>
 #include <designer/cpp/formclasswizardpage.h>
 
@@ -156,14 +159,14 @@ void QtCreatorIntegration::slotDesignerHelpRequested(const QString &manual, cons
 
 void QtCreatorIntegration::updateSelection()
 {
-    if (SharedTools::WidgetHost *host = FormEditorW::activeWidgetHost())
+    if (SharedTools::WidgetHost *host = activeWidgetHost())
         host->updateFormWindowSelectionHandles(true);
     QDesignerIntegration::updateSelection();
 }
 
 QWidget *QtCreatorIntegration::containerWindow(QWidget * /*widget*/) const
 {
-    if (SharedTools::WidgetHost *host = FormEditorW::activeWidgetHost())
+    if (SharedTools::WidgetHost *host = activeWidgetHost())
         return host->integrationContainer();
     return nullptr;
 }
@@ -435,7 +438,7 @@ void QtCreatorIntegration::slotNavigateToSlot(const QString &objectName, const Q
 {
     QString errorMessage;
     if (!navigateToSlot(objectName, signalSignature, parameterNames, &errorMessage) && !errorMessage.isEmpty())
-        QMessageBox::warning(FormEditorW::designerEditor()->topLevel(), Tr::tr("Error finding/adding a slot."), errorMessage);
+        QMessageBox::warning(designerEditor()->topLevel(), Tr::tr("Error finding/adding a slot."), errorMessage);
 }
 
 // Build name of the class as generated by uic, insert Ui namespace
@@ -480,7 +483,7 @@ bool QtCreatorIntegration::navigateToSlot(const QString &objectName,
 {
     using DocumentMap = QMap<int, Document::Ptr>;
 
-    const Utils::FilePath currentUiFile = FormEditorW::activeEditor()->document()->filePath();
+    const Utils::FilePath currentUiFile = activeEditor()->document()->filePath();
 #if 0
     return Designer::Internal::navigateToSlot(currentUiFile.toString(), objectName,
                                               signalSignature, parameterNames, errorMessage);
@@ -533,7 +536,7 @@ bool QtCreatorIntegration::navigateToSlot(const QString &objectName,
         return false;
     }
 
-    QDesignerFormWindowInterface *fwi = FormEditorW::activeWidgetHost()->formWindow();
+    QDesignerFormWindowInterface *fwi = activeWidgetHost()->formWindow();
 
     QString uiClass;
     const Class *cl = nullptr;
diff --git a/src/plugins/designer/settingspage.cpp b/src/plugins/designer/settingspage.cpp
index 64b79940f5..d39ef9cc24 100644
--- a/src/plugins/designer/settingspage.cpp
+++ b/src/plugins/designer/settingspage.cpp
@@ -1,9 +1,11 @@
 // 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 "settingspage.h"
+
+#include "designerconstants.h"
 #include "designertr.h"
 #include "formeditorw.h"
-#include "settingspage.h"
 
 #include <coreplugin/icontext.h>
 
@@ -54,9 +56,9 @@ QList<Core::IOptionsPage *> SettingsPageProvider::pages() const
     if (!m_initialized) {
         // get options pages from designer
         m_initialized = true;
-        FormEditorW::ensureInitStage(FormEditorW::RegisterPlugins);
+        ensureInitStage(RegisterPlugins);
     }
-    return FormEditorW::optionsPages();
+    return optionsPages();
 }
 
 bool SettingsPageProvider::matches(const QRegularExpression &regex) const