TextEditor: Move highlighting support from Plain to Base

Goal is to squash the 'Plain' layer.

Change-Id: I2513de57fbbc09e9d0d9d4f1eb008dced76038f0
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/texteditor/basetexteditor.h

@@ -40,7 +40,6 @@
 #include <coreplugin/find/ifindsupport.h>
 
 #include <QPlainTextEdit>
-#include <QSharedPointer>
 
 QT_BEGIN_NAMESPACE
 class QToolBar;
@@ -52,6 +51,8 @@ class QRect;
 class QTextBlock;
 QT_END_NAMESPACE
 
+namespace Core { class MimeType; }
+
 namespace Utils {
 class CommentDefinition;
 class LineColumnLabel;
@@ -362,6 +363,7 @@ public:
 
     // the blocks list must be sorted
     void setIfdefedOutBlocks(const QList<BlockRange> &blocks);
+    bool isMissingSyntaxDefinition() const;
 
 public slots:
     virtual void copy();
@@ -461,6 +463,7 @@ public slots:
 
     /// Abort code assistant if it is running.
     void abortAssist();
+    void configureMimeType(const Core::MimeType &mimeType);
 
 signals:
     void assistFinished();
@@ -471,6 +474,8 @@ signals:
     void requestZoomReset();
     void requestBlockUpdate(const QTextBlock &);
 
+    void configured(Core::IEditor *editor);
+
 protected:
     bool event(QEvent *e);
     void inputMethodEvent(QInputMethodEvent *e);