Move DiffEditorController into DiffEditorDocument.

Prepare for making diff editor splittable.

Change-Id: I285ad46d095a98f2707d385558dfda0b10b77c1f
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

5 files changed, 95 insertions, 52 deletions

diff --git a/src/plugins/diffeditor/diffeditor.cpp b/src/plugins/diffeditor/diffeditor.cpp
index ee0edccaf8..682abc27b9 100644
--- a/src/plugins/diffeditor/diffeditor.cpp
+++ b/src/plugins/diffeditor/diffeditor.cpp
@@ -116,20 +116,43 @@ void DescriptionEditorWidget::setDisplaySettings(const DisplaySettings &ds)
 
 ///////////////////////////////// DiffEditor //////////////////////////////////
 
-DiffEditor::DiffEditor(SideBySideDiffEditorWidget *editorWidget)
+DiffEditor::DiffEditor()
     : IEditor(0)
-    , m_toolWidget(0)
-    , m_document(new Internal::DiffEditorDocument(QLatin1String(Constants::DIFF_EDITOR_MIMETYPE), this))
-    , m_diffWidget(editorWidget)
+    , m_document(new Internal::DiffEditorDocument(QLatin1String(Constants::DIFF_EDITOR_MIMETYPE)))
+    , m_descriptionWidget(0)
+    , m_diffWidget(0)
     , m_diffEditorController(0)
+    , m_toolBar(0)
     , m_entriesComboBox(0)
     , m_toggleDescriptionAction(0)
 {
+    ctor();
+}
+
+DiffEditor::DiffEditor(DiffEditor *other)
+    : IEditor(0)
+    , m_document(other->m_document)
+    , m_descriptionWidget(0)
+    , m_diffWidget(0)
+    , m_diffEditorController(0)
+    , m_toolBar(0)
+    , m_entriesComboBox(0)
+    , m_toggleDescriptionAction(0)
+{
+    ctor();
+}
+
+void DiffEditor::ctor()
+{
     QSplitter *splitter = new Core::MiniSplitter(Qt::Vertical);
+
     m_descriptionWidget = new Internal::DescriptionEditorWidget(splitter);
     m_descriptionWidget->setReadOnly(true);
     splitter->addWidget(m_descriptionWidget);
-    splitter->addWidget(editorWidget);
+
+    m_diffWidget = new SideBySideDiffEditorWidget(splitter);
+    splitter->addWidget(m_diffWidget);
+
     setWidget(splitter);
 
     connect(TextEditorSettings::instance(), SIGNAL(displaySettingsChanged(TextEditor::DisplaySettings)),
@@ -140,29 +163,34 @@ DiffEditor::DiffEditor(SideBySideDiffEditorWidget *editorWidget)
     m_descriptionWidget->setCodeStyle(TextEditorSettings::codeStyle());
     m_descriptionWidget->baseTextDocument()->setFontSettings(TextEditorSettings::fontSettings());
 
-    m_diffEditorController = editorWidget ? editorWidget->diffEditorController() : 0;
-    if (m_diffEditorController) {
-        connect(m_diffEditorController, SIGNAL(currentDiffFileIndexChanged(int)),
-                this, SLOT(activateEntry(int)));
-        connect(m_diffEditorController, SIGNAL(descriptionChanged(QString)),
-                this, SLOT(slotDescriptionChanged(QString)));
-        connect(m_diffEditorController, SIGNAL(descriptionEnablementChanged(bool)),
-                this, SLOT(slotDescriptionVisibilityChanged()));
-        connect(m_diffEditorController, SIGNAL(descriptionVisibilityChanged(bool)),
-                this, SLOT(slotDescriptionVisibilityChanged()));
-
-        slotDescriptionChanged(m_diffEditorController->description());
-        slotDescriptionVisibilityChanged();
-    }
+    m_diffEditorController = m_document->diffEditorController();
+    m_diffWidget->setDiffEditorController(m_diffEditorController);
+
+    connect(m_diffEditorController, SIGNAL(currentDiffFileIndexChanged(int)),
+            this, SLOT(activateEntry(int)));
+    connect(m_diffEditorController, SIGNAL(descriptionChanged(QString)),
+            this, SLOT(slotDescriptionChanged(QString)));
+    connect(m_diffEditorController, SIGNAL(descriptionEnablementChanged(bool)),
+            this, SLOT(slotDescriptionVisibilityChanged()));
+    connect(m_diffEditorController, SIGNAL(descriptionVisibilityChanged(bool)),
+            this, SLOT(slotDescriptionVisibilityChanged()));
+
+    slotDescriptionChanged(m_diffEditorController->description());
+    slotDescriptionVisibilityChanged();
 }
 
 DiffEditor::~DiffEditor()
 {
-    delete m_toolWidget;
+    delete m_toolBar;
     if (m_widget)
         delete m_widget;
 }
 
+Core::IEditor *DiffEditor::duplicate()
+{
+    return new DiffEditor(this);
+}
+
 bool DiffEditor::open(QString *errorString, const QString &fileName, const QString &realFileName)
 {
     Q_UNUSED(errorString)
@@ -173,7 +201,7 @@ bool DiffEditor::open(QString *errorString, const QString &fileName, const QStri
 
 Core::IDocument *DiffEditor::document()
 {
-    return m_document;
+    return m_document.data();
 }
 
 Core::Id DiffEditor::id() const
@@ -199,11 +227,11 @@ static QToolBar *createToolBar(const QWidget *someWidget)
 
 QWidget *DiffEditor::toolBar()
 {
-    if (m_toolWidget)
-        return m_toolWidget;
+    if (m_toolBar)
+        return m_toolBar;
 
     // Create
-    m_toolWidget = createToolBar(m_diffWidget);
+    m_toolBar = createToolBar(m_diffWidget);
 
     m_entriesComboBox = new QComboBox;
     m_entriesComboBox->setMinimumContentsLength(20);
@@ -213,38 +241,38 @@ QWidget *DiffEditor::toolBar()
     m_entriesComboBox->setSizePolicy(policy);
     connect(m_entriesComboBox, SIGNAL(activated(int)),
             this, SLOT(entryActivated(int)));
-    m_toolWidget->addWidget(m_entriesComboBox);
+    m_toolBar->addWidget(m_entriesComboBox);
 
-    QToolButton *whitespaceButton = new QToolButton(m_toolWidget);
+    QToolButton *whitespaceButton = new QToolButton(m_toolBar);
     whitespaceButton->setText(tr("Ignore Whitespace"));
     whitespaceButton->setCheckable(true);
     whitespaceButton->setChecked(true);
-    m_toolWidget->addWidget(whitespaceButton);
+    m_toolBar->addWidget(whitespaceButton);
 
-    QLabel *contextLabel = new QLabel(m_toolWidget);
+    QLabel *contextLabel = new QLabel(m_toolBar);
     contextLabel->setText(tr("Context Lines:"));
     contextLabel->setContentsMargins(6, 0, 6, 0);
-    m_toolWidget->addWidget(contextLabel);
+    m_toolBar->addWidget(contextLabel);
 
-    QSpinBox *contextSpinBox = new QSpinBox(m_toolWidget);
+    QSpinBox *contextSpinBox = new QSpinBox(m_toolBar);
     contextSpinBox->setRange(-1, 100);
     contextSpinBox->setValue(3);
     contextSpinBox->setFrame(false);
     contextSpinBox->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding); // Mac Qt5
-    m_toolWidget->addWidget(contextSpinBox);
+    m_toolBar->addWidget(contextSpinBox);
 
-    QToolButton *toggleSync = new QToolButton(m_toolWidget);
+    QToolButton *toggleSync = new QToolButton(m_toolBar);
     toggleSync->setIcon(QIcon(QLatin1String(Core::Constants::ICON_LINK)));
     toggleSync->setCheckable(true);
     toggleSync->setChecked(true);
     toggleSync->setToolTip(tr("Synchronize Horizontal Scroll Bars"));
-    m_toolWidget->addWidget(toggleSync);
+    m_toolBar->addWidget(toggleSync);
 
-    QToolButton *toggleDescription = new QToolButton(m_toolWidget);
+    QToolButton *toggleDescription = new QToolButton(m_toolBar);
     toggleDescription->setIcon(QIcon(QLatin1String(Core::Constants::ICON_TOGGLE_TOPBAR)));
     toggleDescription->setCheckable(true);
     toggleDescription->setChecked(true);
-    m_toggleDescriptionAction = m_toolWidget->addWidget(toggleDescription);
+    m_toggleDescriptionAction = m_toolBar->addWidget(toggleDescription);
     slotDescriptionVisibilityChanged();
 
     if (m_diffEditorController) {
@@ -259,7 +287,7 @@ QWidget *DiffEditor::toolBar()
         // TODO: synchronize in opposite direction too
     }
 
-    return m_toolWidget;
+    return m_toolBar;
 }
 
 void DiffEditor::setDiff(const QList<DiffEditorController::DiffFilesContents> &diffFileList,
@@ -367,7 +395,7 @@ void DiffEditor::slotDescriptionVisibilityChanged()
     if (!m_toggleDescriptionAction)
         return;
 
-    QWidget *toggle = m_toolWidget->widgetForAction(m_toggleDescriptionAction);
+    QWidget *toggle = m_toolBar->widgetForAction(m_toggleDescriptionAction);
     if (visible)
         toggle->setToolTip(tr("Hide Change Description"));
     else
diff --git a/src/plugins/diffeditor/diffeditor.h b/src/plugins/diffeditor/diffeditor.h
index f149f8e58e..73c28b212f 100644
--- a/src/plugins/diffeditor/diffeditor.h
+++ b/src/plugins/diffeditor/diffeditor.h
@@ -53,7 +53,8 @@ class DIFFEDITOR_EXPORT DiffEditor : public Core::IEditor
 {
     Q_OBJECT
 public:
-    explicit DiffEditor(SideBySideDiffEditorWidget *editorWidget);
+    DiffEditor();
+    DiffEditor(DiffEditor *other);
     virtual ~DiffEditor();
 
 public:
@@ -64,6 +65,9 @@ public:
     void clear(const QString &message);
 
     // Core::IEditor
+    bool duplicateSupported() const { return false; }
+    Core::IEditor *duplicate();
+
     bool open(QString *errorString, const QString &fileName, const QString &realFileName);
     Core::IDocument *document();
     Core::Id id() const;
@@ -79,16 +83,15 @@ private slots:
     void slotDescriptionChanged(const QString &description);
     void slotDescriptionVisibilityChanged();
 
-protected:
-    QToolBar *m_toolWidget;
-
 private:
+    void ctor();
     void updateEntryToolTip();
 
-    Internal::DiffEditorDocument *m_document;
+    QSharedPointer<Internal::DiffEditorDocument> m_document;
     TextEditor::BaseTextEditorWidget *m_descriptionWidget;
     SideBySideDiffEditorWidget *m_diffWidget;
     DiffEditorController *m_diffEditorController;
+    QToolBar *m_toolBar;
     QComboBox *m_entriesComboBox;
     QAction *m_toggleDescriptionAction;
 };
diff --git a/src/plugins/diffeditor/diffeditordocument.cpp b/src/plugins/diffeditor/diffeditordocument.cpp
index 685a4571ad..b96646e765 100644
--- a/src/plugins/diffeditor/diffeditordocument.cpp
+++ b/src/plugins/diffeditor/diffeditordocument.cpp
@@ -29,6 +29,7 @@
 
 #include "diffeditordocument.h"
 #include "diffeditorconstants.h"
+#include "diffeditorcontroller.h"
 
 #include <QCoreApplication>
 
@@ -37,14 +38,24 @@ namespace Internal {
 
 ///////////////////////////////// DiffFile //////////////////////////////////
 
-DiffEditorDocument::DiffEditorDocument(const QString &mimeType, QObject *parent) :
-    Core::IDocument(parent),
-    m_mimeType(mimeType)
+DiffEditorDocument::DiffEditorDocument(const QString &mimeType) :
+    Core::IDocument(),
+    m_mimeType(mimeType),
+    m_diffEditorController(new DiffEditorController(this))
 {
     setDisplayName(QCoreApplication::translate("DiffEditor", Constants::DIFF_EDITOR_DISPLAY_NAME));
     setTemporary(true);
 }
 
+DiffEditorDocument::~DiffEditorDocument()
+{
+}
+
+DiffEditorController *DiffEditorDocument::diffEditorController() const
+{
+    return m_diffEditorController;
+}
+
 bool DiffEditorDocument::setContents(const QByteArray &contents)
 {
     Q_UNUSED(contents);
diff --git a/src/plugins/diffeditor/diffeditordocument.h b/src/plugins/diffeditor/diffeditordocument.h
index f223fdd301..94c65f3c92 100644
--- a/src/plugins/diffeditor/diffeditordocument.h
+++ b/src/plugins/diffeditor/diffeditordocument.h
@@ -36,14 +36,18 @@
 
 namespace DiffEditor {
 
+class DiffEditorController;
+
 namespace Internal {
 
 class DiffEditorDocument : public Core::IDocument
 {
     Q_OBJECT
 public:
-    explicit DiffEditorDocument(const QString &mimeType,
-                              QObject *parent = 0);
+    explicit DiffEditorDocument(const QString &mimeType);
+    virtual ~DiffEditorDocument();
+
+    DiffEditorController *diffEditorController() const;
 
     bool setContents(const QByteArray &contents);
     QString defaultPath() const { return QString(); }
@@ -58,6 +62,7 @@ public:
 
 private:
     const QString m_mimeType;
+    DiffEditorController *m_diffEditorController;
 };
 
 } // namespace Internal
diff --git a/src/plugins/diffeditor/diffeditorfactory.cpp b/src/plugins/diffeditor/diffeditorfactory.cpp
index 8d1d598a77..f323405ae2 100644
--- a/src/plugins/diffeditor/diffeditorfactory.cpp
+++ b/src/plugins/diffeditor/diffeditorfactory.cpp
@@ -48,11 +48,7 @@ DiffEditorFactory::DiffEditorFactory(QObject *parent)
 
 Core::IEditor *DiffEditorFactory::createEditor()
 {
-    SideBySideDiffEditorWidget *editorWidget = new SideBySideDiffEditorWidget();
-    DiffEditorController *editorController = new DiffEditorController(editorWidget);
-    editorWidget->setDiffEditorController(editorController);
-    DiffEditor *editor = new DiffEditor(editorWidget);
-    return editor;
+    return new DiffEditor();
 }
 
 } // namespace Internal