TextEditor: Replace PlainTextEditorWidget by Base + a setup function

Change-Id: I91a3bfb66a72e9234ca59f97d5260bbfc3ccb0d3
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/texteditor/basetexteditor.cpp

@@ -48,6 +48,7 @@
 #include "circularclipboard.h"
 #include "circularclipboardassist.h"
 #include "highlighterutils.h"
+#include "plaintexteditor.h"
 #include <texteditor/codeassist/codeassistant.h>
 #include <texteditor/codeassist/defaultassistinterface.h>
 #include <texteditor/generichighlighter/context.h>
@@ -6364,6 +6365,11 @@ QColor BaseTextEditorWidget::replacementPenColor(int blockNumber) const
     return QColor();
 }
 
+BaseTextEditor *BaseTextEditorWidget::createEditor()
+{
+    return new PlainTextEditor(this);
+}
+
 void BaseTextEditorWidget::appendStandardContextMenuActions(QMenu *menu)
 {
     menu->addSeparator();
@@ -7001,6 +7007,20 @@ void BaseTextEditorWidget::configureMimeType()
     configureMimeType(mimeType);
 }
 
+// The remnants of PlainTextEditor.
+void BaseTextEditorWidget::setupAsPlainEditor()
+{
+    setRevisionsVisible(true);
+    setMarksVisible(true);
+    setLineSeparatorsAllowed(true);
+
+    baseTextDocument()->setMimeType(QLatin1String(TextEditor::Constants::C_TEXTEDITOR_MIMETYPE_TEXT));
+
+    connect(baseTextDocument(), SIGNAL(filePathChanged(QString,QString)),
+            this, SLOT(configureMimeType()));
+    connect(Manager::instance(), SIGNAL(mimeTypesRegistered()), this, SLOT(configureMimeType()));
+}
+
 
 } // namespace TextEditor