From 70d392d23515e9fc4c5a64897fd4c295d3f17817 Mon Sep 17 00:00:00 2001
From: hjk <qtc-committer@nokia.com>
Date: Wed, 13 Apr 2011 13:00:30 +0200
Subject: [PATCH] core: make context and widget IContext data members

---
 src/plugins/analyzerbase/analyzermanager.cpp  | 18 +++----
 src/plugins/bineditor/bineditorplugin.cpp     |  6 +--
 src/plugins/bookmarks/bookmarkmanager.cpp     | 18 ++-----
 src/plugins/bookmarks/bookmarkmanager.h       |  7 +--
 .../cmakeprojectmanager/cmakeeditor.cpp       | 18 ++-----
 src/plugins/cmakeprojectmanager/cmakeeditor.h |  6 +--
 src/plugins/coreplugin/designmode.cpp         | 14 ++----
 src/plugins/coreplugin/designmode.h           |  4 --
 src/plugins/coreplugin/editmode.cpp           | 18 ++-----
 src/plugins/coreplugin/editmode.h             |  2 -
 src/plugins/coreplugin/icontext.h             | 33 ++++++------
 src/plugins/coreplugin/statusbarwidget.cpp    | 27 +---------
 src/plugins/coreplugin/statusbarwidget.h      |  7 ---
 src/plugins/cppeditor/cppeditor.cpp           |  5 --
 src/plugins/cppeditor/cppeditor.h             |  4 --
 src/plugins/debugger/debuggerplugin.cpp       | 33 ++++++------
 src/plugins/designer/designercontext.cpp      | 21 ++------
 src/plugins/designer/designercontext.h        |  6 ---
 src/plugins/designer/formwindoweditor.cpp     | 29 +++--------
 src/plugins/designer/formwindoweditor.h       |  4 --
 .../genericprojectfileseditor.cpp             | 15 +-----
 .../genericprojectfileseditor.h               |  8 ---
 src/plugins/glsleditor/glsleditor.cpp         |  5 --
 src/plugins/glsleditor/glsleditor.h           |  2 -
 src/plugins/glsleditor/glsleditoreditable.cpp |  4 +-
 src/plugins/glsleditor/glsleditoreditable.h   |  6 +--
 src/plugins/helloworld/helloworldplugin.cpp   | 11 ++--
 src/plugins/help/helpmode.cpp                 |  7 +--
 src/plugins/help/helpmode.h                   |  3 --
 src/plugins/imageviewer/imageviewer.cpp       | 19 ++-----
 src/plugins/imageviewer/imageviewer.h         |  3 --
 .../projectexplorer/projectexplorer.cpp       |  9 ++--
 .../projectexplorer/projecttreewidget.cpp     |  6 +--
 src/plugins/projectexplorer/taskwindow.cpp    | 22 ++------
 src/plugins/qmldesigner/designmodecontext.cpp | 50 ++++---------------
 src/plugins/qmldesigner/designmodecontext.h   | 32 +-----------
 src/plugins/qmljseditor/qmljseditor.cpp       |  5 --
 src/plugins/qmljseditor/qmljseditoreditable.h |  5 --
 .../qt4projectmanager/profileeditor.cpp       | 15 ++----
 src/plugins/qt4projectmanager/profileeditor.h |  5 --
 .../resourceeditor/resourceeditorfactory.cpp  |  4 +-
 .../resourceeditor/resourceeditorfactory.h    |  2 -
 .../resourceeditor/resourceeditorw.cpp        | 11 ++--
 src/plugins/resourceeditor/resourceeditorw.h  |  5 --
 src/plugins/texteditor/basetexteditor.cpp     |  1 +
 src/plugins/texteditor/basetexteditor.h       |  2 +-
 src/plugins/texteditor/plaintexteditor.cpp    | 13 ++---
 src/plugins/texteditor/plaintexteditor.h      |  5 --
 .../texteditor/snippets/snippeteditor.cpp     | 15 ++----
 .../texteditor/snippets/snippeteditor.h       |  7 ---
 src/plugins/vcsbase/vcsbaseeditor.cpp         | 12 +----
 src/plugins/vcsbase/vcsbasesubmiteditor.cpp   | 17 ++-----
 src/plugins/vcsbase/vcsbasesubmiteditor.h     |  2 -
 src/plugins/welcome/welcomemode.cpp           | 14 ++----
 src/plugins/welcome/welcomemode.h             |  3 --
 55 files changed, 135 insertions(+), 490 deletions(-)

diff --git a/src/plugins/analyzerbase/analyzermanager.cpp b/src/plugins/analyzerbase/analyzermanager.cpp
index 7d1d89fe7b5..81aaecfc338 100644
--- a/src/plugins/analyzerbase/analyzermanager.cpp
+++ b/src/plugins/analyzerbase/analyzermanager.cpp
@@ -143,8 +143,12 @@ class AnalyzerMode : public Core::IMode
 public:
     AnalyzerMode(QObject *parent = 0)
         : Core::IMode(parent)
-        , m_widget(0)
-    {}
+    {
+        setContext(Core::Context(
+            Core::Constants::C_EDITORMANAGER,
+            Constants::C_ANALYZEMODE,
+            Core::Constants::C_NAVIGATION_PANE));
+    }
 
     ~AnalyzerMode()
     {
@@ -159,19 +163,9 @@ public:
     QString displayName() const { return tr("Analyze"); }
     QIcon icon() const { return QIcon(":/images/analyzer_mode.png"); }
     int priority() const { return Constants::P_MODE_ANALYZE; }
-    QWidget *widget() { return m_widget; }
     QString id() const { return QLatin1String(Constants::MODE_ANALYZE); }
     QString type() const { return Core::Constants::MODE_EDIT_TYPE; }
-    Core::Context context() const
-    {
-        return Core::Context(Core::Constants::C_EDITORMANAGER, Constants::C_ANALYZEMODE,
-                             Core::Constants::C_NAVIGATION_PANE);
-    }
     QString contextHelpId() const { return QString(); }
-    void setWidget(QWidget *widget) { m_widget = widget; }
-
-private:
-    QWidget *m_widget;
 };
 
 } // namespace Internal
diff --git a/src/plugins/bineditor/bineditorplugin.cpp b/src/plugins/bineditor/bineditorplugin.cpp
index 59fe6d3aecf..1048249b965 100644
--- a/src/plugins/bineditor/bineditorplugin.cpp
+++ b/src/plugins/bineditor/bineditorplugin.cpp
@@ -318,6 +318,7 @@ class BinEditorInterface : public Core::IEditor
 public:
     BinEditorInterface(BinEditor *editor)
     {
+        setWidget(editor);
         m_editor = editor;
         m_file = new BinEditorFile(m_editor);
         m_context.add(Core::Constants::K_DEFAULT_BINARY_EDITOR_ID);
@@ -351,10 +352,6 @@ public:
         delete m_editor;
     }
 
-    QWidget *widget() { return m_editor; }
-
-    Core::Context context() const { return m_context; }
-
     bool createNew(const QString & /* contents */ = QString()) {
         m_editor->clear();
         m_file->setFilename(QString());
@@ -392,7 +389,6 @@ private:
     BinEditor *m_editor;
     QString m_displayName;
     BinEditorFile *m_file;
-    Core::Context m_context;
     QToolBar *m_toolBar;
     QLineEdit *m_addressEdit;
 };
diff --git a/src/plugins/bookmarks/bookmarkmanager.cpp b/src/plugins/bookmarks/bookmarkmanager.cpp
index 9630d589655..b6357a28e25 100644
--- a/src/plugins/bookmarks/bookmarkmanager.cpp
+++ b/src/plugins/bookmarks/bookmarkmanager.cpp
@@ -300,21 +300,11 @@ void BookmarkView::gotoBookmark(const QModelIndex &index)
 // BookmarkContext
 ////
 
-BookmarkContext::BookmarkContext(BookmarkView *widget)
-    : Core::IContext(widget),
-      m_bookmarkView(widget),
-      m_context(Constants::BOOKMARKS_CONTEXT)
+BookmarkContext::BookmarkContext(QWidget *widget)
+    : Core::IContext(widget)
 {
-}
-
-Context BookmarkContext::context() const
-{
-    return m_context;
-}
-
-QWidget *BookmarkContext::widget()
-{
-    return m_bookmarkView;
+      setWidget(widget);
+      setContext(Core::Context(Constants::BOOKMARKS_CONTEXT));
 }
 
 ////
diff --git a/src/plugins/bookmarks/bookmarkmanager.h b/src/plugins/bookmarks/bookmarkmanager.h
index a9052a939a8..d82cda61196 100644
--- a/src/plugins/bookmarks/bookmarkmanager.h
+++ b/src/plugins/bookmarks/bookmarkmanager.h
@@ -164,12 +164,7 @@ private:
 class BookmarkContext : public Core::IContext
 {
 public:
-    BookmarkContext(BookmarkView *widget);
-    virtual Core::Context context() const;
-    virtual QWidget *widget();
-private:
-    BookmarkView *m_bookmarkView;
-    const Core::Context m_context;
+    BookmarkContext(QWidget *widget);
 };
 
 class BookmarkViewFactory : public Core::INavigationWidgetFactory
diff --git a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
index a69fcb3ded7..6c9b09d78c3 100644
--- a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
@@ -55,17 +55,11 @@ using namespace CMakeProjectManager::Internal;
 //
 
 CMakeEditor::CMakeEditor(CMakeEditorWidget *editor)
-  : BaseTextEditor(editor),
-    m_context(CMakeProjectManager::Constants::C_CMAKEEDITOR,
-              TextEditor::Constants::C_TEXTEDITOR)
+  : BaseTextEditor(editor)
 {
-    connect (this, SIGNAL(changed()),
-             this, SLOT(markAsChanged()));
-}
-
-Core::Context CMakeEditor::context() const
-{
-    return m_context;
+    setContext(Core::Context(CMakeProjectManager::Constants::C_CMAKEEDITOR,
+              TextEditor::Constants::C_TEXTEDITOR));
+    connect(this, SIGNAL(changed()), this, SLOT(markAsChanged()));
 }
 
 Core::IEditor *CMakeEditor::duplicate(QWidget *parent)
@@ -122,10 +116,6 @@ CMakeEditorWidget::CMakeEditorWidget(QWidget *parent, CMakeEditorFactory *factor
     baseTextDocument()->setSyntaxHighlighter(new CMakeHighlighter);
 }
 
-CMakeEditorWidget::~CMakeEditorWidget()
-{
-}
-
 TextEditor::BaseTextEditor *CMakeEditorWidget::createEditor()
 {
     return new CMakeEditor(this);
diff --git a/src/plugins/cmakeprojectmanager/cmakeeditor.h b/src/plugins/cmakeprojectmanager/cmakeeditor.h
index 2ce08908df0..948f617d0fb 100644
--- a/src/plugins/cmakeprojectmanager/cmakeeditor.h
+++ b/src/plugins/cmakeprojectmanager/cmakeeditor.h
@@ -54,19 +54,18 @@ class CMakeManager;
 class CMakeEditor : public TextEditor::BaseTextEditor
 {
     Q_OBJECT
+
 public:
     CMakeEditor(CMakeEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
     QString id() const;
     bool isTemporary() const { return false; }
+
 private slots:
     void markAsChanged();
     void build();
-private:
-    const Core::Context m_context;
 };
 
 class CMakeEditorWidget : public TextEditor::BaseTextEditorWidget
@@ -75,7 +74,6 @@ class CMakeEditorWidget : public TextEditor::BaseTextEditorWidget
 
 public:
     CMakeEditorWidget(QWidget *parent, CMakeEditorFactory *factory, TextEditor::TextEditorActionHandler *ah);
-    ~CMakeEditorWidget();
 
     bool save(const QString &fileName = QString());
 
diff --git a/src/plugins/coreplugin/designmode.cpp b/src/plugins/coreplugin/designmode.cpp
index 6f632e51b49..23d0d5d2676 100644
--- a/src/plugins/coreplugin/designmode.cpp
+++ b/src/plugins/coreplugin/designmode.cpp
@@ -120,6 +120,9 @@ DesignMode::DesignMode(EditorManager *editorManager) :
 {
     setObjectName(QLatin1String("DesignMode"));
     setEnabled(false);
+    setContext(Context(Constants::C_DESIGN_MODE));
+    setWidget(d->m_stackWidget);
+
     ExtensionSystem::PluginManager::instance()->addObject(d->m_coreListener);
 
     connect(editorManager, SIGNAL(currentEditorChanged(Core::IEditor*)),
@@ -138,17 +141,6 @@ DesignMode::~DesignMode()
     delete d;
 }
 
-Context DesignMode::context() const
-{
-    static Context contexts(Constants::C_DESIGN_MODE);
-    return contexts;
-}
-
-QWidget *DesignMode::widget()
-{
-    return d->m_stackWidget;
-}
-
 QString DesignMode::displayName() const
 {
     return tr("Design");
diff --git a/src/plugins/coreplugin/designmode.h b/src/plugins/coreplugin/designmode.h
index f5a0592bc3a..acc9242e099 100644
--- a/src/plugins/coreplugin/designmode.h
+++ b/src/plugins/coreplugin/designmode.h
@@ -68,10 +68,6 @@ public:
 
     QStringList registeredMimeTypes() const;
 
-    // IContext
-    Context context() const;
-    QWidget *widget();
-
     // IMode
     QString displayName() const;
     QIcon icon() const;
diff --git a/src/plugins/coreplugin/editmode.cpp b/src/plugins/coreplugin/editmode.cpp
index a8878012af7..f030a94bc93 100644
--- a/src/plugins/coreplugin/editmode.cpp
+++ b/src/plugins/coreplugin/editmode.cpp
@@ -88,6 +88,11 @@ EditMode::EditMode(EditorManager *editorManager) :
     connect(modeManager, SIGNAL(currentModeChanged(Core::IMode*)),
             this, SLOT(grabEditorManager(Core::IMode*)));
     m_splitter->setFocusProxy(m_editorManager);
+
+    setWidget(m_splitter);
+    setContext(Context(Constants::C_EDIT_MODE,
+                       Constants::C_EDITORMANAGER,
+                       Constants::C_NAVIGATION_PANE));
 }
 
 EditMode::~EditMode()
@@ -112,11 +117,6 @@ int EditMode::priority() const
     return Constants::P_MODE_EDIT;
 }
 
-QWidget* EditMode::widget()
-{
-    return m_splitter;
-}
-
 QString EditMode::id() const
 {
     return QLatin1String(Constants::MODE_EDIT);
@@ -127,14 +127,6 @@ QString EditMode::type() const
     return QLatin1String(Constants::MODE_EDIT_TYPE);
 }
 
-Context EditMode::context() const
-{
-    static Context contexts(Constants::C_EDIT_MODE,
-                            Constants::C_EDITORMANAGER,
-                            Constants::C_NAVIGATION_PANE);
-    return contexts;
-}
-
 void EditMode::grabEditorManager(Core::IMode *mode)
 {
     if (mode != this)
diff --git a/src/plugins/coreplugin/editmode.h b/src/plugins/coreplugin/editmode.h
index 38550207178..b1da166705f 100644
--- a/src/plugins/coreplugin/editmode.h
+++ b/src/plugins/coreplugin/editmode.h
@@ -60,10 +60,8 @@ public:
     QString displayName() const;
     QIcon icon() const;
     int priority() const;
-    QWidget* widget();
     QString id() const;
     QString type() const;
-    Context context() const;
 
 private slots:
     void grabEditorManager(Core::IMode *mode);
diff --git a/src/plugins/coreplugin/icontext.h b/src/plugins/coreplugin/icontext.h
index f4559f1a20c..82fc88c2fbc 100644
--- a/src/plugins/coreplugin/icontext.h
+++ b/src/plugins/coreplugin/icontext.h
@@ -38,10 +38,8 @@
 
 #include <QtCore/QList>
 #include <QtCore/QObject>
-
-QT_BEGIN_NAMESPACE
-class QWidget;
-QT_END_NAMESPACE
+#include <QtCore/QPointer>
+#include <QtGui/QWidget>
 
 namespace Core {
 
@@ -80,31 +78,28 @@ class CORE_EXPORT IContext : public QObject
 {
     Q_OBJECT
 public:
-    IContext(QObject *parent = 0) : QObject(parent) {}
-    virtual ~IContext() {}
+    IContext(QObject *parent = 0) : QObject(parent), m_widget(0) {}
 
-    virtual Context context() const = 0;
-    virtual QWidget *widget() = 0;
+    virtual Context context() const { return m_context; }
+    virtual QWidget *widget() const { return m_widget; }
     virtual QString contextHelpId() const { return QString(); }
+
+    virtual void setContext(const Context &context) { m_context = context; }
+    virtual void setWidget(QWidget *widget) { m_widget = widget; }
+protected:
+    Context m_context;
+    QPointer<QWidget> m_widget;
 };
 
 class BaseContext : public Core::IContext
 {
 public:
     BaseContext(QWidget *widget, const Context &context, QObject *parent = 0)
-        : Core::IContext(parent),
-        m_widget(widget),
-        m_context(context)
+        : Core::IContext(parent)
     {
+        setWidget(widget);
+        setContext(context);
     }
-
-    Context context() const { return m_context; }
-
-    QWidget *widget() { return m_widget; }
-
-private:
-    QWidget *m_widget;
-    Context m_context;
 };
 
 } // namespace Core
diff --git a/src/plugins/coreplugin/statusbarwidget.cpp b/src/plugins/coreplugin/statusbarwidget.cpp
index bb5e334a80e..571445f34d2 100644
--- a/src/plugins/coreplugin/statusbarwidget.cpp
+++ b/src/plugins/coreplugin/statusbarwidget.cpp
@@ -38,10 +38,7 @@
 using namespace Core;
 
 StatusBarWidget::StatusBarWidget(QObject *parent)
-        : IContext(parent),
-    m_widget(0),
-    m_context(),
-    m_defaultPosition(StatusBarWidget::First)
+    : IContext(parent), m_defaultPosition(StatusBarWidget::First)
 {
 }
 
@@ -50,33 +47,11 @@ StatusBarWidget::~StatusBarWidget()
     delete m_widget;
 }
 
-Context StatusBarWidget::context() const
-{
-    return m_context;
-}
-
-QWidget *StatusBarWidget::widget()
-{
-    return m_widget;
-}
-
 StatusBarWidget::StatusBarPosition StatusBarWidget::position() const
 {
     return m_defaultPosition;
 }
 
-QWidget *StatusBarWidget::setWidget(QWidget *widget)
-{
-    QWidget *oldWidget = m_widget;
-    m_widget = widget;
-    return oldWidget;
-}
-
-void StatusBarWidget::setContext(const Context &context)
-{
-    m_context = context;
-}
-
 void StatusBarWidget::setPosition(StatusBarWidget::StatusBarPosition position)
 {
     m_defaultPosition = position;
diff --git a/src/plugins/coreplugin/statusbarwidget.h b/src/plugins/coreplugin/statusbarwidget.h
index 213e75f86e0..8c73f665b1b 100644
--- a/src/plugins/coreplugin/statusbarwidget.h
+++ b/src/plugins/coreplugin/statusbarwidget.h
@@ -50,17 +50,10 @@ public:
     StatusBarWidget(QObject *parent = 0);
     ~StatusBarWidget();
 
-    Context context() const;
-    QWidget *widget();
     StatusBarWidget::StatusBarPosition position() const;
-
-    QWidget *setWidget(QWidget *widget);
-    void setContext(const Context &context);
     void setPosition(StatusBarWidget::StatusBarPosition position);
 
 private:
-    QPointer<QWidget> m_widget;
-    Context m_context;
     StatusBarWidget::StatusBarPosition m_defaultPosition;
 };
 
diff --git a/src/plugins/cppeditor/cppeditor.cpp b/src/plugins/cppeditor/cppeditor.cpp
index 0a1e1969c20..c94e3af1fb7 100644
--- a/src/plugins/cppeditor/cppeditor.cpp
+++ b/src/plugins/cppeditor/cppeditor.cpp
@@ -1775,11 +1775,6 @@ void CPPEditorWidget::keyPressEvent(QKeyEvent *e)
     finishRename();
 }
 
-Core::Context CPPEditor::context() const
-{
-    return m_context;
-}
-
 Core::IEditor *CPPEditor::duplicate(QWidget *parent)
 {
     CPPEditorWidget *newEditor = new CPPEditorWidget(parent);
diff --git a/src/plugins/cppeditor/cppeditor.h b/src/plugins/cppeditor/cppeditor.h
index 11634168fd8..237a75aa005 100644
--- a/src/plugins/cppeditor/cppeditor.h
+++ b/src/plugins/cppeditor/cppeditor.h
@@ -147,7 +147,6 @@ class CPPEditor : public TextEditor::BaseTextEditor
     Q_OBJECT
 public:
     CPPEditor(CPPEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
@@ -155,9 +154,6 @@ public:
 
     bool isTemporary() const { return false; }
     virtual bool open(const QString & fileName);
-
-private:
-    Core::Context m_context;
 };
 
 class CPPEditorWidget : public TextEditor::BaseTextEditorWidget
diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index b447a7c062e..acd660fa4c7 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -495,7 +495,11 @@ public:
 class DebugMode : public IMode
 {
 public:
-    DebugMode() : m_widget(0) { setObjectName(QLatin1String("DebugMode")); }
+    DebugMode()
+    {
+        setObjectName(QLatin1String("DebugMode"));
+        setContext(Context(CC::C_EDITORMANAGER, C_DEBUGMODE, CC::C_NAVIGATION_PANE));
+    }
 
     ~DebugMode()
     {
@@ -504,18 +508,18 @@ public:
         delete m_widget;
     }
 
+    void setWidget(QWidget *widget)
+    {
+        m_widget = widget;
+    }
+
     // IMode
     QString displayName() const { return DebuggerPlugin::tr("Debug"); }
     QIcon icon() const { return QIcon(__(":/fancyactionbar/images/mode_Debug.png")); }
     int priority() const { return P_MODE_DEBUG; }
-    QWidget *widget();
     QString id() const { return MODE_DEBUG; }
     QString type() const { return CC::MODE_EDIT_TYPE; }
-    Context context() const
-        { return Context(CC::C_EDITORMANAGER, C_DEBUGMODE, CC::C_NAVIGATION_PANE); }
     QString contextHelpId() const { return QString(); }
-private:
-    QWidget *m_widget;
 };
 
 
@@ -2942,7 +2946,12 @@ void DebuggerPluginPrivate::extensionsInitialized()
 
 
     // Debug mode setup
-    m_plugin->addAutoReleasedObject(new DebugMode);
+    DebugMode *debugMode = new DebugMode;
+    QWidget *widget = m_mainWindow->createContents(debugMode);
+    widget->setFocusProxy(EditorManager::instance());
+    debugMode->setWidget(widget);
+
+    m_plugin->addAutoReleasedObject(debugMode);
 
     //
     //  Connections
@@ -3157,16 +3166,6 @@ QAction *DebuggerPlugin::visibleDebugAction()
     return theDebuggerCore->m_visibleDebugAction;
 }
 
-QWidget *DebugMode::widget()
-{
-    if (!m_widget) {
-        //qDebug() << "CREATING DEBUG MODE WIDGET";
-        m_widget = theDebuggerCore->m_mainWindow->createContents(this);
-        m_widget->setFocusProxy(EditorManager::instance());
-    }
-    return m_widget;
-}
-
 } // namespace Debugger
 
 #include "debuggerplugin.moc"
diff --git a/src/plugins/designer/designercontext.cpp b/src/plugins/designer/designercontext.cpp
index 22be144dedd..017843b8728 100644
--- a/src/plugins/designer/designercontext.cpp
+++ b/src/plugins/designer/designercontext.cpp
@@ -47,23 +47,12 @@ enum { debug = 0 };
 namespace Designer {
 namespace Internal {
 
-DesignerContext::DesignerContext(const Core::Context &contexts,
-                                 QWidget *widget,
-                                 QObject *parent) :
-    Core::IContext(parent),
-    m_context(contexts),
-    m_widget(widget)
+DesignerContext::DesignerContext(const Core::Context &context,
+                                 QWidget *widget, QObject *parent)
+  : Core::IContext(parent)
 {
-}
-
-Core::Context DesignerContext::context() const
-{
-    return m_context;
-}
-
-QWidget *DesignerContext::widget()
-{
-    return m_widget;
+    setContext(context);
+    setWidget(widget);
 }
 
 QString DesignerContext::contextHelpId() const
diff --git a/src/plugins/designer/designercontext.h b/src/plugins/designer/designercontext.h
index 73b168c0216..2055512f105 100644
--- a/src/plugins/designer/designercontext.h
+++ b/src/plugins/designer/designercontext.h
@@ -53,13 +53,7 @@ public:
                              QWidget *widget,
                              QObject *parent = 0);
 
-    virtual Core::Context context() const;
-    virtual QWidget *widget();
     virtual QString contextHelpId() const;
-
-private:
-    const Core::Context m_context;
-    QWidget *m_widget;
 };
 
 } // namespace Internal
diff --git a/src/plugins/designer/formwindoweditor.cpp b/src/plugins/designer/formwindoweditor.cpp
index c29ddf3da7c..eb282446b5d 100644
--- a/src/plugins/designer/formwindoweditor.cpp
+++ b/src/plugins/designer/formwindoweditor.cpp
@@ -59,28 +59,25 @@ namespace Designer {
 
 struct FormWindowEditorPrivate
 {
-    explicit FormWindowEditorPrivate(Internal::DesignerXmlEditor *editor,
-                                     QDesignerFormWindowInterface *form);
+    FormWindowEditorPrivate(Internal::DesignerXmlEditor *editor,
+                            QDesignerFormWindowInterface *form)
+        : m_textEditor(editor), m_file(form)
+    {}
 
     TextEditor::PlainTextEditor m_textEditor;
     Internal::FormWindowFile m_file;
-    Core::Context m_context;
 };
 
-FormWindowEditorPrivate::FormWindowEditorPrivate(Internal::DesignerXmlEditor *editor,
-                                                 QDesignerFormWindowInterface *form) :
-    m_textEditor(editor), m_file(form)
-{
-}
-
 FormWindowEditor::FormWindowEditor(Internal::DesignerXmlEditor *editor,
                                    QDesignerFormWindowInterface *form,
                                    QObject *parent) :
     Core::IEditor(parent),
     d(new FormWindowEditorPrivate(editor, form))
 {
-    d->m_context.add(Designer::Constants::K_DESIGNER_XML_EDITOR_ID);
-    d->m_context.add(Designer::Constants::C_DESIGNER_XML_EDITOR);
+    setContext(Core::Context(Designer::Constants::K_DESIGNER_XML_EDITOR_ID,
+                             Designer::Constants::C_DESIGNER_XML_EDITOR));
+    setWidget(d->m_textEditor.widget());
+
     connect(form, SIGNAL(changed()), this, SIGNAL(changed()));
     // Revert to saved/load externally modified files.
     connect(&d->m_file, SIGNAL(reload(QString)), this, SLOT(slotOpen(QString)));
@@ -239,16 +236,6 @@ bool FormWindowEditor::restoreState(const QByteArray &state)
     return d->m_textEditor.restoreState(state);
 }
 
-Core::Context FormWindowEditor::context() const
-{
-    return d->m_context;
-}
-
-QWidget *FormWindowEditor::widget()
-{
-    return d->m_textEditor.widget();
-}
-
 bool FormWindowEditor::isTemporary() const
 {
     return false;
diff --git a/src/plugins/designer/formwindoweditor.h b/src/plugins/designer/formwindoweditor.h
index 5189028e258..4731c00c2c7 100644
--- a/src/plugins/designer/formwindoweditor.h
+++ b/src/plugins/designer/formwindoweditor.h
@@ -94,10 +94,6 @@ public:
 
     virtual  QString preferredModeType() const;
 
-    // IContext
-    virtual Core::Context context() const;
-    virtual QWidget *widget();
-
     // For uic code model support
     QString contents() const;
 
diff --git a/src/plugins/genericprojectmanager/genericprojectfileseditor.cpp b/src/plugins/genericprojectmanager/genericprojectfileseditor.cpp
index 9561547d04a..7dab99290f5 100644
--- a/src/plugins/genericprojectmanager/genericprojectfileseditor.cpp
+++ b/src/plugins/genericprojectmanager/genericprojectfileseditor.cpp
@@ -59,10 +59,6 @@ ProjectFilesFactory::ProjectFilesFactory(Manager *manager,
     m_mimeTypes.append(QLatin1String(Constants::CONFIG_MIMETYPE));
 }
 
-ProjectFilesFactory::~ProjectFilesFactory()
-{
-}
-
 Manager *ProjectFilesFactory::manager() const
 {
     return m_manager;
@@ -105,16 +101,9 @@ Core::IFile *ProjectFilesFactory::open(const QString &fileName)
 ////////////////////////////////////////////////////////////////////////////////////////
 
 ProjectFilesEditor::ProjectFilesEditor(ProjectFilesEditorWidget *editor)
-  : TextEditor::BaseTextEditor(editor),
-    m_context(Constants::C_FILESEDITOR)
-{ }
-
-ProjectFilesEditor::~ProjectFilesEditor()
-{ }
-
-Core::Context ProjectFilesEditor::context() const
+  : TextEditor::BaseTextEditor(editor)
 {
-    return m_context;
+   setContext(Core::Context(Constants::C_FILESEDITOR));
 }
 
 QString ProjectFilesEditor::id() const
diff --git a/src/plugins/genericprojectmanager/genericprojectfileseditor.h b/src/plugins/genericprojectmanager/genericprojectfileseditor.h
index f4737413c59..0f15bebae17 100644
--- a/src/plugins/genericprojectmanager/genericprojectfileseditor.h
+++ b/src/plugins/genericprojectmanager/genericprojectfileseditor.h
@@ -58,7 +58,6 @@ class ProjectFilesFactory: public Core::IEditorFactory
 
 public:
     ProjectFilesFactory(Manager *manager, TextEditor::TextEditorActionHandler *handler);
-    virtual ~ProjectFilesFactory();
 
     Manager *manager() const;
 
@@ -81,18 +80,11 @@ class ProjectFilesEditor : public TextEditor::BaseTextEditor
 
 public:
     ProjectFilesEditor(ProjectFilesEditorWidget *editorWidget);
-    virtual ~ProjectFilesEditor();
 
-    virtual Core::Context context() const;
     virtual QString id() const;
-
     virtual bool duplicateSupported() const;
     virtual Core::IEditor *duplicate(QWidget *parent);
-
     virtual bool isTemporary() const { return false; }
-
-private:
-    Core::Context m_context;
 };
 
 class ProjectFilesEditorWidget : public TextEditor::BaseTextEditorWidget
diff --git a/src/plugins/glsleditor/glsleditor.cpp b/src/plugins/glsleditor/glsleditor.cpp
index 79e5a112043..b66036221eb 100644
--- a/src/plugins/glsleditor/glsleditor.cpp
+++ b/src/plugins/glsleditor/glsleditor.cpp
@@ -213,11 +213,6 @@ bool GLSLEditorEditable::open(const QString &fileName)
     return b;
 }
 
-Core::Context GLSLEditorEditable::context() const
-{
-    return m_context;
-}
-
 void GLSLTextEditorWidget::setFontSettings(const TextEditor::FontSettings &fs)
 {
     TextEditor::BaseTextEditorWidget::setFontSettings(fs);
diff --git a/src/plugins/glsleditor/glsleditor.h b/src/plugins/glsleditor/glsleditor.h
index f50821a4d06..0255de77054 100644
--- a/src/plugins/glsleditor/glsleditor.h
+++ b/src/plugins/glsleditor/glsleditor.h
@@ -121,8 +121,6 @@ private:
     void setSelectedElements();
     QString wordUnderCursor() const;
 
-    const Core::Context m_context;
-
     QTimer *m_updateDocumentTimer;
     QComboBox *m_outlineCombo;
     Document::Ptr m_glslDocument;
diff --git a/src/plugins/glsleditor/glsleditoreditable.cpp b/src/plugins/glsleditor/glsleditoreditable.cpp
index 304f76902e9..dc612cc1d33 100644
--- a/src/plugins/glsleditor/glsleditoreditable.cpp
+++ b/src/plugins/glsleditor/glsleditoreditable.cpp
@@ -50,8 +50,8 @@ namespace Internal {
 GLSLEditorEditable::GLSLEditorEditable(GLSLTextEditorWidget *editor)
     : BaseTextEditor(editor)
 {
-    m_context.add(GLSLEditor::Constants::C_GLSLEDITOR_ID);
-    m_context.add(TextEditor::Constants::C_TEXTEDITOR);
+    setContext(Core::Context(GLSLEditor::Constants::C_GLSLEDITOR_ID,
+                             TextEditor::Constants::C_TEXTEDITOR));
 }
 
 QString GLSLEditorEditable::preferredModeType() const
diff --git a/src/plugins/glsleditor/glsleditoreditable.h b/src/plugins/glsleditor/glsleditoreditable.h
index a3455d1ad67..277328242e6 100644
--- a/src/plugins/glsleditor/glsleditoreditable.h
+++ b/src/plugins/glsleditor/glsleditoreditable.h
@@ -47,17 +47,13 @@ class GLSLEditorEditable : public TextEditor::BaseTextEditor
 
 public:
     explicit GLSLEditorEditable(GLSLTextEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
     QString id() const;
     bool isTemporary() const { return false; }
-    virtual bool open(const QString & fileName);
+    virtual bool open(const QString &fileName);
     virtual QString preferredModeType() const;
-
-private:
-    Core::Context m_context;
 };
 
 } // namespace Internal
diff --git a/src/plugins/helloworld/helloworldplugin.cpp b/src/plugins/helloworld/helloworldplugin.cpp
index c6512bb2ac9..23f09f2f711 100644
--- a/src/plugins/helloworld/helloworldplugin.cpp
+++ b/src/plugins/helloworld/helloworldplugin.cpp
@@ -56,19 +56,18 @@ namespace Internal {
 class HelloMode : public Core::IMode
 {
 public:
-    HelloMode() : m_widget(new QPushButton(tr("Hello World PushButton!"))) {}
+    HelloMode()
+    {
+        setWidget(new QPushButton(tr("Hello World PushButton!")));
+        setContext(Core::Context("HelloWorld.MainView"));
+    }
 
     QString displayName() const { return tr("Hello world!"); }
     QIcon icon() const { return QIcon(); }
     int priority() const { return 0; }
-    QWidget *widget() { return m_widget; }
     QString id() const { return QLatin1String("HelloWorld.HelloWorldMode"); }
     QString type() const { return QLatin1String("HelloWorld.HelloWorldMode"); }
-    Core::Context context() const { return Core::Context("HelloWorld.MainView"); };
     QString contextHelpId() const { return QString(); }
-
-private:
-    QWidget *m_widget;
 };
 
 
diff --git a/src/plugins/help/helpmode.cpp b/src/plugins/help/helpmode.cpp
index 2598925104a..36ade375ab0 100644
--- a/src/plugins/help/helpmode.cpp
+++ b/src/plugins/help/helpmode.cpp
@@ -41,10 +41,10 @@ using namespace Help::Internal;
 
 HelpMode::HelpMode(QObject *parent)
   : Core::IMode(parent),
-    m_widget(0),
     m_icon(QLatin1String(":/fancyactionbar/images/mode_Reference.png"))
 {
     setObjectName(QLatin1String("HelpMode"));
+    setContext(Core::Context(Constants::C_MODE_HELP));
 }
 
 QString HelpMode::displayName() const
@@ -61,8 +61,3 @@ QString HelpMode::id() const
 {
     return QLatin1String(Constants::ID_MODE_HELP);
 }
-
-Core::Context HelpMode::context() const
-{
-    return Core::Context(Constants::C_MODE_HELP);
-}
diff --git a/src/plugins/help/helpmode.h b/src/plugins/help/helpmode.h
index e125fd3b281..68c4a2ae919 100644
--- a/src/plugins/help/helpmode.h
+++ b/src/plugins/help/helpmode.h
@@ -50,12 +50,9 @@ public:
     QString displayName() const;
     QIcon icon() const { return m_icon; }
     int priority() const;
-    QWidget *widget() { return m_widget; }
     QString id() const;
     QString type() const { return QString(); }
-    Core::Context context() const;
     QString contextHelpId() const { return QString(); }
-    void setWidget(QWidget *widget) { m_widget = widget; }
 
 private:
     QWidget *m_widget;
diff --git a/src/plugins/imageviewer/imageviewer.cpp b/src/plugins/imageviewer/imageviewer.cpp
index 76c383841bd..6101257388d 100644
--- a/src/plugins/imageviewer/imageviewer.cpp
+++ b/src/plugins/imageviewer/imageviewer.cpp
@@ -54,11 +54,6 @@ namespace Internal {
 
 struct ImageViewerPrivate
 {
-    ImageViewerPrivate()
-        : context(Constants::IMAGEVIEWER_ID)
-    {}
-
-    Core::Context context;
     QString displayName;
     ImageViewerFile *file;
     ImageView *imageView;
@@ -71,9 +66,11 @@ ImageViewer::ImageViewer(QWidget *parent)
     d_ptr(new ImageViewerPrivate)
 {
     d_ptr->file = new ImageViewerFile(this);
-
     d_ptr->imageView = new ImageView();
 
+    setContext(Core::Context(Constants::IMAGEVIEWER_ID));
+    setWidget(d_ptr->imageView);
+
     // toolbar
     d_ptr->toolbar = new QWidget();
     d_ptr->ui_toolbar.setupUi(d_ptr->toolbar);
@@ -114,16 +111,6 @@ ImageViewer::~ImageViewer()
     delete d_ptr->toolbar;
 }
 
-Core::Context ImageViewer::context() const
-{
-    return d_ptr->context;
-}
-
-QWidget *ImageViewer::widget()
-{
-    return d_ptr->imageView;
-}
-
 bool ImageViewer::createNew(const QString &contents)
 {
     Q_UNUSED(contents)
diff --git a/src/plugins/imageviewer/imageviewer.h b/src/plugins/imageviewer/imageviewer.h
index 13bf704c669..f8d9b1e3c6e 100644
--- a/src/plugins/imageviewer/imageviewer.h
+++ b/src/plugins/imageviewer/imageviewer.h
@@ -56,9 +56,6 @@ public:
     explicit ImageViewer(QWidget *parent = 0);
     ~ImageViewer();
 
-    Core::Context context() const;
-    QWidget *widget();
-
     bool createNew(const QString &contents = QString());
     bool open(const QString &fileName = QString());
     Core::IFile *file();
diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index 6c923a2cefc..3d8dd464160 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -234,19 +234,20 @@ ProjectExplorerPluginPrivate::ProjectExplorerPluginPrivate() :
 class ProjectsMode : public Core::IMode
 {
 public:
-    ProjectsMode(QWidget *proWindow) : m_widget(proWindow) {}
+    ProjectsMode(QWidget *proWindow)
+    {
+        setWidget(proWindow);
+        setContext(Core::Context(Constants::C_PROJECTEXPLORER));
+    }
 
     QString displayName() const { return QCoreApplication::translate("ProjectExplorer::ProjectsMode", "Projects"); }
     QIcon icon() const { return QIcon(QLatin1String(":/fancyactionbar/images/mode_Project.png")); }
     int priority() const { return Constants::P_MODE_SESSION; }
-    QWidget *widget() { return m_widget; }
     QString id() const { return QLatin1String(Constants::MODE_SESSION); }
     QString type() const { return QString(); }
-    Core::Context context() const { return Core::Context(Constants::C_PROJECTEXPLORER); }
     QString contextHelpId() const { return QLatin1String("Managing Projects"); }
 
 private:
-    QWidget *m_widget;
     QIcon m_icon;
 };
 
diff --git a/src/plugins/projectexplorer/projecttreewidget.cpp b/src/plugins/projectexplorer/projecttreewidget.cpp
index bdf7d45bd05..51d97aca109 100644
--- a/src/plugins/projectexplorer/projecttreewidget.cpp
+++ b/src/plugins/projectexplorer/projecttreewidget.cpp
@@ -75,8 +75,8 @@ public:
         setEditTriggers(QAbstractItemView::EditKeyPressed);
         setContextMenuPolicy(Qt::CustomContextMenu);
 //        setExpandsOnDoubleClick(false);
-        Core::Context context(Constants::C_PROJECT_TREE);
-        m_context = new Core::BaseContext(this, context);
+        m_context = new Core::IContext(this);
+        m_context->setContext(Core::Context(Constants::C_PROJECT_TREE));
         Core::ICore::instance()->addContextObject(m_context);
     }
     ~ProjectTreeView()
@@ -86,7 +86,7 @@ public:
     }
 
 private:
-    Core::BaseContext *m_context;
+    Core::IContext *m_context;
 };
 
 /*!
diff --git a/src/plugins/projectexplorer/taskwindow.cpp b/src/plugins/projectexplorer/taskwindow.cpp
index b4ddd79814a..2c99bccb33d 100644
--- a/src/plugins/projectexplorer/taskwindow.cpp
+++ b/src/plugins/projectexplorer/taskwindow.cpp
@@ -78,11 +78,6 @@ class TaskWindowContext : public Core::IContext
 {
 public:
     TaskWindowContext(QWidget *widget);
-    virtual Core::Context context() const;
-    virtual QWidget *widget();
-private:
-    QWidget *m_taskList;
-    const Core::Context m_context;
 };
 
 class TaskModel : public QAbstractItemModel
@@ -1145,24 +1140,13 @@ void TaskDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
 }
 
 TaskWindowContext::TaskWindowContext(QWidget *widget)
-  : Core::IContext(widget),
-    m_taskList(widget),
-    m_context(Core::Constants::C_PROBLEM_PANE)
+  : Core::IContext(widget)
 {
-}
-
-Core::Context TaskWindowContext::context() const
-{
-    return m_context;
-}
-
-QWidget *TaskWindowContext::widget()
-{
-    return m_taskList;
+    setWidget(widget);
+    setContext(Core::Context(Core::Constants::C_PROBLEM_PANE));
 }
 
 } // namespace Internal
-
 } // namespace ProjectExplorer
 
 #include "taskwindow.moc"
diff --git a/src/plugins/qmldesigner/designmodecontext.cpp b/src/plugins/qmldesigner/designmodecontext.cpp
index d1142045995..65cc850d0fd 100644
--- a/src/plugins/qmldesigner/designmodecontext.cpp
+++ b/src/plugins/qmldesigner/designmodecontext.cpp
@@ -36,62 +36,32 @@
 #include "designmodewidget.h"
 #include "formeditorwidget.h"
 
-#include <QWidget>
-
 namespace QmlDesigner {
 namespace Internal {
 
-DesignModeContext::DesignModeContext(DesignModeWidget *widget)
-  : IContext(widget),
-    m_widget(widget),
-    m_context(Constants::C_QMLDESIGNER, Constants::C_QT_QUICK_TOOLS_MENU)
+DesignModeContext::DesignModeContext(QWidget *widget)
+  : IContext(widget)
 {
-}
-
-DesignModeContext::~DesignModeContext()
-{
-}
-
-Core::Context DesignModeContext::context() const
-{
-    return m_context;
-}
-
-QWidget *DesignModeContext::widget()
-{
-    return m_widget;
+    setWidget(widget);
+    setContext(Core::Context(Constants::C_QMLDESIGNER, Constants::C_QT_QUICK_TOOLS_MENU));
 }
 
 QString DesignModeContext::contextHelpId() const
 {
-    return m_widget->contextHelpId();
+    return qobject_cast<DesignModeWidget *>(m_widget)->contextHelpId();
 }
 
 
-FormEditorContext::FormEditorContext(FormEditorWidget *widget)
-  : IContext(widget),
-    m_widget(widget),
-    m_context(Constants::C_QMLFORMEDITOR, Constants::C_QT_QUICK_TOOLS_MENU)
+FormEditorContext::FormEditorContext(QWidget *widget)
+  : IContext(widget)
 {
-}
-
-FormEditorContext::~FormEditorContext()
-{
-}
-
-Core::Context FormEditorContext::context() const
-{
-    return m_context;
-}
-
-QWidget *FormEditorContext::widget()
-{
-    return m_widget;
+    setWidget(widget);
+    setContext(Core::Context(Constants::C_QMLFORMEDITOR, Constants::C_QT_QUICK_TOOLS_MENU));
 }
 
 QString FormEditorContext::contextHelpId() const
 {
-    return m_widget->contextHelpId();
+    return qobject_cast<FormEditorWidget *>(m_widget)->contextHelpId();
 }
 
 }
diff --git a/src/plugins/qmldesigner/designmodecontext.h b/src/plugins/qmldesigner/designmodecontext.h
index 587730bf4f2..2b9f1511d34 100644
--- a/src/plugins/qmldesigner/designmodecontext.h
+++ b/src/plugins/qmldesigner/designmodecontext.h
@@ -35,53 +35,25 @@
 #define DESIGNMODECONTEXT_H
 
 #include <coreplugin/icontext.h>
-#include <QList>
-
-QT_BEGIN_NAMESPACE
-class QWidget;
-QT_END_NAMESPACE
 
 namespace QmlDesigner {
-
-class FormEditorWidget;
-
 namespace Internal {
 
-class DesignModeWidget;
-
 /**
   * Bauhaus Design mode context object
   */
 class DesignModeContext : public Core::IContext
 {
 public:
-    DesignModeContext(DesignModeWidget *widget);
-    ~DesignModeContext();
-
-    Core::Context context() const;
-    QWidget *widget();
-
+    DesignModeContext(QWidget *widget);
     QString contextHelpId() const;
-
-private:
-    DesignModeWidget *m_widget;
-    const Core::Context m_context;
 };
 
 class FormEditorContext : public Core::IContext
 {
 public:
-    FormEditorContext(FormEditorWidget *widget);
-    ~FormEditorContext();
-
-    Core::Context context() const;
-    QWidget *widget();
-
+    FormEditorContext(QWidget *widget);
     QString contextHelpId() const;
-
-private:
-    FormEditorWidget *m_widget;
-    const Core::Context m_context;
 };
 
 }
diff --git a/src/plugins/qmljseditor/qmljseditor.cpp b/src/plugins/qmljseditor/qmljseditor.cpp
index 3ff3d2a6630..4c7df37f930 100644
--- a/src/plugins/qmljseditor/qmljseditor.cpp
+++ b/src/plugins/qmljseditor/qmljseditor.cpp
@@ -748,11 +748,6 @@ bool QmlJSEditorEditable::open(const QString &fileName)
     return b;
 }
 
-Core::Context QmlJSEditorEditable::context() const
-{
-    return m_context;
-}
-
 void QmlJSTextEditorWidget::updateDocument()
 {
     m_updateDocumentTimer->start(UPDATE_DOCUMENT_DEFAULT_INTERVAL);
diff --git a/src/plugins/qmljseditor/qmljseditoreditable.h b/src/plugins/qmljseditor/qmljseditoreditable.h
index 7df03f7b4e8..02c1863a7c4 100644
--- a/src/plugins/qmljseditor/qmljseditoreditable.h
+++ b/src/plugins/qmljseditor/qmljseditoreditable.h
@@ -46,7 +46,6 @@ class QMLJSEDITOR_EXPORT QmlJSEditorEditable : public TextEditor::BaseTextEditor
 
 public:
     explicit QmlJSEditorEditable(QmlJSTextEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
@@ -55,10 +54,6 @@ public:
     virtual bool open(const QString & fileName);
     virtual QString preferredModeType() const;
     void setTextCodec(QTextCodec *codec, TextCodecReason = TextCodecOtherReason);
-
-
-private:
-    Core::Context m_context;
 };
 
 } // namespace QmlJSEditor
diff --git a/src/plugins/qt4projectmanager/profileeditor.cpp b/src/plugins/qt4projectmanager/profileeditor.cpp
index b341331ae7d..59eaf7e6998 100644
--- a/src/plugins/qt4projectmanager/profileeditor.cpp
+++ b/src/plugins/qt4projectmanager/profileeditor.cpp
@@ -59,18 +59,13 @@ using namespace Qt4ProjectManager::Internal;
 //
 
 ProFileEditor::ProFileEditor(ProFileEditorWidget *editor)
-  : BaseTextEditor(editor),
-    m_context(Qt4ProjectManager::Constants::C_PROFILEEDITOR,
-              TextEditor::Constants::C_TEXTEDITOR)
+  : BaseTextEditor(editor)
 {
+    setContext(Core::Context(Qt4ProjectManager::Constants::C_PROFILEEDITOR,
+              TextEditor::Constants::C_TEXTEDITOR));
 //    m_contexts << uidm->uniqueIdentifier(Qt4ProjectManager::Constants::PROJECT_KIND);
 }
 
-Core::Context ProFileEditor::context() const
-{
-    return m_context;
-}
-
 Core::IEditor *ProFileEditor::duplicate(QWidget *parent)
 {
     ProFileEditorWidget *ret = new ProFileEditorWidget(parent, qobject_cast<ProFileEditorWidget*>(editorWidget())->factory(),
@@ -103,10 +98,6 @@ ProFileEditorWidget::ProFileEditorWidget(QWidget *parent, ProFileEditorFactory *
     m_commentDefinition.setSingleLine(QString(QLatin1Char('#')));
 }
 
-ProFileEditorWidget::~ProFileEditorWidget()
-{
-}
-
 void ProFileEditorWidget::unCommentSelection()
 {
     Utils::unCommentSelection(this, m_commentDefinition);
diff --git a/src/plugins/qt4projectmanager/profileeditor.h b/src/plugins/qt4projectmanager/profileeditor.h
index b746672fa61..b3a4d1bb6f0 100644
--- a/src/plugins/qt4projectmanager/profileeditor.h
+++ b/src/plugins/qt4projectmanager/profileeditor.h
@@ -61,14 +61,11 @@ class ProFileEditor : public TextEditor::BaseTextEditor
 
 public:
     ProFileEditor(ProFileEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
     QString id() const;
     bool isTemporary() const { return false; }
-private:
-    const Core::Context m_context;
 };
 
 class ProFileEditorWidget : public TextEditor::BaseTextEditorWidget
@@ -78,11 +75,9 @@ class ProFileEditorWidget : public TextEditor::BaseTextEditorWidget
 public:
     ProFileEditorWidget(QWidget *parent, ProFileEditorFactory *factory,
                   TextEditor::TextEditorActionHandler *ah);
-    ~ProFileEditorWidget();
 
     bool save(const QString &fileName = QString());
 
-
     ProFileEditorFactory *factory() { return m_factory; }
     TextEditor::TextEditorActionHandler *actionHandler() const { return m_ah; }
 
diff --git a/src/plugins/resourceeditor/resourceeditorfactory.cpp b/src/plugins/resourceeditor/resourceeditorfactory.cpp
index 60dba523028..dcfbfd77c56 100644
--- a/src/plugins/resourceeditor/resourceeditorfactory.cpp
+++ b/src/plugins/resourceeditor/resourceeditorfactory.cpp
@@ -48,7 +48,6 @@ using namespace ResourceEditor::Constants;
 ResourceEditorFactory::ResourceEditorFactory(ResourceEditorPlugin *plugin) :
     Core::IEditorFactory(plugin),
     m_mimeTypes(QStringList(QLatin1String("application/vnd.nokia.xml.qt.resource"))),
-    m_context(ResourceEditor::Constants::C_RESOURCEEDITOR),
     m_plugin(plugin)
 {
     Core::FileIconProvider *iconProvider = Core::FileIconProvider::instance();
@@ -78,7 +77,8 @@ Core::IFile *ResourceEditorFactory::open(const QString &fileName)
 
 Core::IEditor *ResourceEditorFactory::createEditor(QWidget *parent)
 {
-    return new ResourceEditorW(m_context, m_plugin, parent);
+    Core::Context context(ResourceEditor::Constants::C_RESOURCEEDITOR);
+    return new ResourceEditorW(context, m_plugin, parent);
 }
 
 QStringList ResourceEditorFactory::mimeTypes() const
diff --git a/src/plugins/resourceeditor/resourceeditorfactory.h b/src/plugins/resourceeditor/resourceeditorfactory.h
index b364e60fb24..30fce181e6c 100644
--- a/src/plugins/resourceeditor/resourceeditorfactory.h
+++ b/src/plugins/resourceeditor/resourceeditorfactory.h
@@ -61,8 +61,6 @@ public:
 
 private:
     const QStringList m_mimeTypes;
-    const Core::Context m_context;
-
     ResourceEditorPlugin *m_plugin;
 };
 
diff --git a/src/plugins/resourceeditor/resourceeditorw.cpp b/src/plugins/resourceeditor/resourceeditorw.cpp
index 67683eb82ac..456a8f0c164 100644
--- a/src/plugins/resourceeditor/resourceeditorw.cpp
+++ b/src/plugins/resourceeditor/resourceeditorw.cpp
@@ -73,11 +73,13 @@ QString ResourceEditorFile::mimeType() const
 ResourceEditorW::ResourceEditorW(const Core::Context &context,
                                ResourceEditorPlugin *plugin,
                                QWidget *parent)
-        : m_context(context),
-        m_resourceEditor(new SharedTools::QrcEditor(parent)),
+      : m_resourceEditor(new SharedTools::QrcEditor(parent)),
         m_resourceFile(new ResourceEditorFile(this)),
         m_plugin(plugin)
 {
+    setContext(context);
+    setWidget(m_resourceEditor);
+
     m_resourceEditor->setResourceDragEnabled(true);
 
     connect(m_resourceEditor, SIGNAL(dirtyChanged(bool)), this, SLOT(dirtyChanged(bool)));
@@ -242,11 +244,6 @@ void ResourceEditorW::dirtyChanged(bool dirty)
         emit changed();
 }
 
-QWidget *ResourceEditorW::widget()
-{
-    return m_resourceEditor; /* we know it's a subclass of QWidget...*/
-}
-
 void ResourceEditorW::onUndoStackChanged(bool canUndo, bool canRedo)
 {
     m_plugin->onUndoStackChanged(this, canUndo, canRedo);
diff --git a/src/plugins/resourceeditor/resourceeditorw.h b/src/plugins/resourceeditor/resourceeditorw.h
index a22c6d830b9..7d625e77930 100644
--- a/src/plugins/resourceeditor/resourceeditorw.h
+++ b/src/plugins/resourceeditor/resourceeditorw.h
@@ -98,10 +98,6 @@ public:
     QByteArray saveState() const { return QByteArray(); }
     bool restoreState(const QByteArray &/*state*/) { return true; }
 
-    // ContextInterface
-    Core::Context context() const { return m_context; }
-    QWidget *widget();
-
     void setSuggestedFileName(const QString &fileName);
     bool isTemporary() const { return false; }
 
@@ -114,7 +110,6 @@ private:
     const QString m_fileFilter;
     QString m_displayName;
     QString m_suggestedName;
-    const Core::Context m_context;
     QPointer<SharedTools::QrcEditor> m_resourceEditor;
     ResourceEditorFile *m_resourceFile;
     ResourceEditorPlugin *m_plugin;
diff --git a/src/plugins/texteditor/basetexteditor.cpp b/src/plugins/texteditor/basetexteditor.cpp
index b80e08612de..5d08ddc8e97 100644
--- a/src/plugins/texteditor/basetexteditor.cpp
+++ b/src/plugins/texteditor/basetexteditor.cpp
@@ -5781,6 +5781,7 @@ void BaseTextEditorWidget::appendStandardContextMenuActions(QMenu *menu)
 BaseTextEditor::BaseTextEditor(BaseTextEditorWidget *editor)
   : e(editor)
 {
+    setWidget(e);
     using namespace Find;
     Aggregation::Aggregate *aggregate = new Aggregation::Aggregate;
     BaseTextFind *baseTextFind = new BaseTextFind(editor);
diff --git a/src/plugins/texteditor/basetexteditor.h b/src/plugins/texteditor/basetexteditor.h
index 2adedbee5d4..30ec2aec345 100644
--- a/src/plugins/texteditor/basetexteditor.h
+++ b/src/plugins/texteditor/basetexteditor.h
@@ -558,7 +558,7 @@ public:
     BaseTextEditorWidget *editorWidget() const { return e; }
 
     // EditorInterface
-    QWidget *widget() { return e; }
+    //QWidget *widget() { return e; }
     Core::IFile * file() { return e->file(); }
     bool createNew(const QString &contents) { return e->createNew(contents); }
     bool open(const QString &fileName = QString()) { return e->open(fileName); }
diff --git a/src/plugins/texteditor/plaintexteditor.cpp b/src/plugins/texteditor/plaintexteditor.cpp
index 977f4e9c9da..7eecb9a7f4f 100644
--- a/src/plugins/texteditor/plaintexteditor.cpp
+++ b/src/plugins/texteditor/plaintexteditor.cpp
@@ -59,9 +59,10 @@ using namespace TextEditor;
 using namespace TextEditor::Internal;
 
 PlainTextEditor::PlainTextEditor(PlainTextEditorWidget *editor)
-  : BaseTextEditor(editor),
-    m_context(Core::Constants::K_DEFAULT_TEXT_EDITOR_ID, TextEditor::Constants::C_TEXTEDITOR)
+  : BaseTextEditor(editor)
 {
+    setContext(Core::Context(Core::Constants::K_DEFAULT_TEXT_EDITOR_ID,
+                             TextEditor::Constants::C_TEXTEDITOR));
 }
 
 PlainTextEditorWidget::PlainTextEditorWidget(QWidget *parent)
@@ -84,14 +85,6 @@ PlainTextEditorWidget::PlainTextEditorWidget(QWidget *parent)
     connect(Manager::instance(), SIGNAL(mimeTypesRegistered()), this, SLOT(configure()));
 }
 
-PlainTextEditorWidget::~PlainTextEditorWidget()
-{}
-
-Core::Context PlainTextEditor::context() const
-{
-    return m_context;
-}
-
 Core::IEditor *PlainTextEditor::duplicate(QWidget *parent)
 {
     PlainTextEditorWidget *newWidget = new PlainTextEditorWidget(parent);
diff --git a/src/plugins/texteditor/plaintexteditor.h b/src/plugins/texteditor/plaintexteditor.h
index f440f38e725..26262fcadc9 100644
--- a/src/plugins/texteditor/plaintexteditor.h
+++ b/src/plugins/texteditor/plaintexteditor.h
@@ -55,15 +55,11 @@ class TEXTEDITOR_EXPORT PlainTextEditor : public BaseTextEditor
     Q_OBJECT
 public:
     PlainTextEditor(PlainTextEditorWidget *);
-    Core::Context context() const;
 
     bool duplicateSupported() const { return true; }
     Core::IEditor *duplicate(QWidget *parent);
     bool isTemporary() const { return false; }
     virtual QString id() const;
-
-private:
-    const Core::Context m_context;
 };
 
 class TEXTEDITOR_EXPORT PlainTextEditorWidget : public BaseTextEditorWidget
@@ -72,7 +68,6 @@ class TEXTEDITOR_EXPORT PlainTextEditorWidget : public BaseTextEditorWidget
 
 public:
     PlainTextEditorWidget(QWidget *parent);
-    ~PlainTextEditorWidget();
 
     void configure(const Core::MimeType &mimeType);
     bool isMissingSyntaxDefinition() const;
diff --git a/src/plugins/texteditor/snippets/snippeteditor.cpp b/src/plugins/texteditor/snippets/snippeteditor.cpp
index 92c1b05344c..0ff9bfb507e 100644
--- a/src/plugins/texteditor/snippets/snippeteditor.cpp
+++ b/src/plugins/texteditor/snippets/snippeteditor.cpp
@@ -42,13 +42,11 @@
 
 using namespace TextEditor;
 
-SnippetEditor::SnippetEditor(SnippetEditorWidget *editor) :
-    BaseTextEditor(editor),
-    m_context(Constants::SNIPPET_EDITOR_ID, Constants::C_TEXTEDITOR)
-{}
-
-SnippetEditor::~SnippetEditor()
-{}
+SnippetEditor::SnippetEditor(SnippetEditorWidget *editor)
+    : BaseTextEditor(editor)
+{
+    setContext(Core::Context(Constants::SNIPPET_EDITOR_ID, Constants::C_TEXTEDITOR));
+}
 
 QString SnippetEditor::id() const
 {
@@ -63,9 +61,6 @@ SnippetEditorWidget::SnippetEditorWidget(QWidget *parent) : BaseTextEditorWidget
     setParenthesesMatchingEnabled(true);
 }
 
-SnippetEditorWidget::~SnippetEditorWidget()
-{}
-
 void SnippetEditorWidget::setSyntaxHighlighter(TextEditor::SyntaxHighlighter *highlighter)
 {
     baseTextDocument()->setSyntaxHighlighter(highlighter);
diff --git a/src/plugins/texteditor/snippets/snippeteditor.h b/src/plugins/texteditor/snippets/snippeteditor.h
index 4e6a12052fd..9b70e85208c 100644
--- a/src/plugins/texteditor/snippets/snippeteditor.h
+++ b/src/plugins/texteditor/snippets/snippeteditor.h
@@ -55,17 +55,11 @@ class TEXTEDITOR_EXPORT SnippetEditor : public BaseTextEditor
 
 public:
     SnippetEditor(SnippetEditorWidget *editorWidget);
-    virtual ~SnippetEditor();
-
-    Core::Context context() const { return m_context; }
 
     bool duplicateSupported() const { return false; }
     Core::IEditor *duplicate(QWidget * /* parent */ ) { return 0; }
     bool isTemporary() const { return false; }
     virtual QString id() const;
-
-private:
-    const Core::Context m_context;
 };
 
 class TEXTEDITOR_EXPORT SnippetEditorWidget : public BaseTextEditorWidget
@@ -74,7 +68,6 @@ class TEXTEDITOR_EXPORT SnippetEditorWidget : public BaseTextEditorWidget
 
 public:
     SnippetEditorWidget(QWidget *parent);
-    virtual ~SnippetEditorWidget();
 
     void setSyntaxHighlighter(SyntaxHighlighter *highlighter);
 
diff --git a/src/plugins/vcsbase/vcsbaseeditor.cpp b/src/plugins/vcsbase/vcsbaseeditor.cpp
index f735fb7fe76..f31d6c02d39 100644
--- a/src/plugins/vcsbase/vcsbaseeditor.cpp
+++ b/src/plugins/vcsbase/vcsbaseeditor.cpp
@@ -134,9 +134,7 @@ class VCSBaseEditor : public TextEditor::BaseTextEditor
 {
     Q_OBJECT
 public:
-    VCSBaseEditor(VCSBaseEditorWidget *,
-                  const VCSBaseEditorParameters *type);
-    Core::Context context() const;
+    VCSBaseEditor(VCSBaseEditorWidget *, const VCSBaseEditorParameters *type);
 
     bool duplicateSupported() const { return false; }
     Core::IEditor *duplicate(QWidget * /*parent*/) { return 0; }
@@ -151,7 +149,6 @@ signals:
 
 private:
     QString m_id;
-    Core::Context m_context;
     bool m_temporary;
 };
 
@@ -159,14 +156,9 @@ VCSBaseEditor::VCSBaseEditor(VCSBaseEditorWidget *widget,
                              const VCSBaseEditorParameters *type)  :
     BaseTextEditor(widget),
     m_id(type->id),
-    m_context(type->context, TextEditor::Constants::C_TEXTEDITOR),
     m_temporary(false)
 {
-}
-
-Core::Context VCSBaseEditor::context() const
-{
-    return m_context;
+    setContext(Core::Context(type->context, TextEditor::Constants::C_TEXTEDITOR));
 }
 
 // Diff editor: creates a browse combo in the toolbar for diff output.
diff --git a/src/plugins/vcsbase/vcsbasesubmiteditor.cpp b/src/plugins/vcsbase/vcsbasesubmiteditor.cpp
index e178f22b69c..134acf69fdb 100644
--- a/src/plugins/vcsbase/vcsbasesubmiteditor.cpp
+++ b/src/plugins/vcsbase/vcsbasesubmiteditor.cpp
@@ -136,7 +136,6 @@ struct VCSBaseSubmitEditorPrivate
     QPointer<QAction> m_submitAction;
 
     Internal::NickNameDialog *m_nickNameDialog;
-    Core::Context m_contexts;
 };
 
 VCSBaseSubmitEditorPrivate::VCSBaseSubmitEditorPrivate(const VCSBaseSubmitEditorParameters *parameters,
@@ -146,8 +145,7 @@ VCSBaseSubmitEditorPrivate::VCSBaseSubmitEditorPrivate(const VCSBaseSubmitEditor
     m_toolWidget(0),
     m_parameters(parameters),
     m_file(new VCSBase::Internal::SubmitEditorFile(QLatin1String(parameters->mimeType), q)),
-    m_nickNameDialog(0),
-    m_contexts(parameters->context)
+    m_nickNameDialog(0)
 {
 }
 
@@ -155,6 +153,9 @@ VCSBaseSubmitEditor::VCSBaseSubmitEditor(const VCSBaseSubmitEditorParameters *pa
                                          Utils::SubmitEditorWidget *editorWidget) :
     m_d(new VCSBaseSubmitEditorPrivate(parameters, editorWidget, this))
 {
+    setContext(Core::Context(parameters->context));
+    setWidget(m_d->m_widget);
+
     // Message font according to settings
     const TextEditor::FontSettings fs = TextEditor::TextEditorSettings::instance()->fontSettings();
     QFont font = editorWidget->descriptionEdit()->font();
@@ -427,16 +428,6 @@ QWidget *VCSBaseSubmitEditor::toolBar()
     return m_d->m_toolWidget;
 }
 
-Core::Context VCSBaseSubmitEditor::context() const
-{
-    return m_d->m_contexts;
-}
-
-QWidget *VCSBaseSubmitEditor::widget()
-{
-    return m_d->m_widget;
-}
-
 QByteArray VCSBaseSubmitEditor::saveState() const
 {
     return QByteArray();
diff --git a/src/plugins/vcsbase/vcsbasesubmiteditor.h b/src/plugins/vcsbase/vcsbasesubmiteditor.h
index cfd14202d5d..34e92305079 100644
--- a/src/plugins/vcsbase/vcsbasesubmiteditor.h
+++ b/src/plugins/vcsbase/vcsbasesubmiteditor.h
@@ -129,8 +129,6 @@ public:
     virtual QString id() const;
 
     virtual QWidget *toolBar();
-    virtual Core::Context context() const;
-    virtual QWidget *widget();
 
     virtual QByteArray saveState() const;
     virtual bool restoreState(const QByteArray &state);
diff --git a/src/plugins/welcome/welcomemode.cpp b/src/plugins/welcome/welcomemode.cpp
index a95496b302a..8865a69d89c 100644
--- a/src/plugins/welcome/welcomemode.cpp
+++ b/src/plugins/welcome/welcomemode.cpp
@@ -116,6 +116,9 @@ WelcomeMode::WelcomeMode() :
     m_d->m_scrollArea->setWidget(m_d->m_widget);
     m_d->m_scrollArea->setWidgetResizable(true);
 
+    setContext(Core::Context(Core::Constants::C_WELCOME_MODE));
+    setWidget(m_d->m_scrollArea);
+
     PluginManager *pluginManager = PluginManager::instance();
     connect(pluginManager, SIGNAL(objectAdded(QObject*)), SLOT(welcomePluginAdded(QObject*)));
 
@@ -145,11 +148,6 @@ int WelcomeMode::priority() const
     return Core::Constants::P_MODE_WELCOME;
 }
 
-QWidget* WelcomeMode::widget()
-{
-    return m_d->m_scrollArea;
-}
-
 QString WelcomeMode::id() const
 {
     return QLatin1String(Core::Constants::MODE_WELCOME);
@@ -160,12 +158,6 @@ QString WelcomeMode::type() const
     return QLatin1String(Core::Constants::MODE_WELCOME_TYPE);
 }
 
-Core::Context WelcomeMode::context() const
-{
-    static Core::Context contexts(Core::Constants::C_WELCOME_MODE);
-    return contexts;
-}
-
 bool sortFunction(Utils::IWelcomePage * a, Utils::IWelcomePage *b)
 {
     return a->priority() < b->priority();
diff --git a/src/plugins/welcome/welcomemode.h b/src/plugins/welcome/welcomemode.h
index 1bdc3abd5d5..119ee34b6c6 100644
--- a/src/plugins/welcome/welcomemode.h
+++ b/src/plugins/welcome/welcomemode.h
@@ -39,7 +39,6 @@
 #include <coreplugin/imode.h>
 
 QT_BEGIN_NAMESPACE
-class QWidget;
 class QToolButton;
 QT_END_NAMESPACE
 
@@ -62,10 +61,8 @@ public:
     QString displayName() const;
     QIcon icon() const;
     int priority() const;
-    QWidget *widget();
     QString id() const;
     QString type() const;
-    Core::Context context() const;
     void activated();
     QString contextHelpId() const;
     void initPlugins();