Move IEditor::createNew to IDocument::setContents

The method is for setting the contents, so it belongs to the document,
and should be named correspondingly.

Change-Id: I40363dc08f11268f530885b512e4a88e8b10d096
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/diffeditor/diffeditor.cpp

@@ -67,12 +67,6 @@ DiffEditor::~DiffEditor()
         delete m_widget;
 }
 
-bool DiffEditor::createNew(const QString &contents)
-{
-    Q_UNUSED(contents)
-    return true;
-}
-
 bool DiffEditor::open(QString *errorString, const QString &fileName, const QString &realFileName)
 {
     Q_UNUSED(errorString)

src/plugins/diffeditor/diffeditor.h

@@ -60,7 +60,6 @@ public:
     void clear(const QString &message);
 
     // Core::IEditor
-    bool createNew(const QString &contents);
     bool open(QString *errorString, const QString &fileName, const QString &realFileName);
     Core::IDocument *document();
     Core::Id id() const;

src/plugins/diffeditor/diffeditorfile.cpp

@@ -46,6 +46,12 @@ DiffEditorFile::DiffEditorFile(const QString &mimeType, QObject *parent) :
     setTemporary(true);
 }
 
+bool DiffEditorFile::setContents(const QByteArray &contents)
+{
+    Q_UNUSED(contents);
+    return false;
+}
+
 void DiffEditorFile::setModified(bool modified)
 {
     if (m_modified == modified)

src/plugins/diffeditor/diffeditorfile.h

@@ -48,6 +48,7 @@ public:
     explicit DiffEditorFile(const QString &mimeType,
                               QObject *parent = 0);
 
+    bool setContents(const QByteArray &contents);
     QString defaultPath() const { return QString(); }
     QString suggestedFileName() const { return QString(); }
 

src/plugins/diffeditor/diffeditorplugin.cpp

@@ -103,7 +103,7 @@ void DiffEditorPlugin::diff()
     //: Editor title
     QString title = tr("Diff \"%1\", \"%2\"").arg(fileName1).arg(fileName2);
     DiffEditor *editor = qobject_cast<DiffEditor *>
-            (Core::EditorManager::openEditorWithContents(editorId, &title, QString()));
+            (Core::EditorManager::openEditorWithContents(editorId, &title));
 
     if (!editor)
         return;

src/plugins/diffeditor/diffshoweditor.h

@@ -42,10 +42,6 @@ QT_END_NAMESPACE
 
 namespace DiffEditor {
 
-namespace Internal {
-class DiffEditorFile;
-}
-
 class DIFFEDITOR_EXPORT DiffShowEditor : public DiffEditor
 {
     Q_OBJECT