TextEditor: Resolve TODO and call Insert() and Remove()...

... which both already exist in the TextDocument API (stubbed out or
untested as they are).

src/apps/haiku-depot/textview/TextEditor.cpp

@@ -237,23 +237,23 @@ TextEditor::KeyDown(KeyEvent event)
 }
 
 
-void
+status_t
 TextEditor::Insert(int32 offset, const BString& string)
 {
-	if (!fEditingEnabled)
-		return;
+	if (!fEditingEnabled || fDocument.Get() == NULL)
+		return B_ERROR;
 
-	// TODO: ...
+	return fDocument->Insert(offset, string, fStyleAtCaret);
 }
 
 
-void
+status_t
 TextEditor::Remove(int32 offset, int32 length)
 {
-	if (!fEditingEnabled)
-		return;
+	if (!fEditingEnabled || fDocument.Get() == NULL)
+		return B_ERROR;
 
-	// TODO: ...
+	return fDocument->Remove(offset, length);
 }
 
 

src/apps/haiku-depot/textview/TextEditor.h

@@ -58,8 +58,8 @@ public:
 
 	virtual	void				KeyDown(KeyEvent event);
 
-	virtual	void				Insert(int32 offset, const BString& string);
-	virtual	void				Remove(int32 offset, int32 length);
+	virtual	status_t			Insert(int32 offset, const BString& string);
+	virtual	status_t			Remove(int32 offset, int32 length);
 
 			void				LineUp(bool select);
 			void				LineDown(bool select);
@@ -84,6 +84,7 @@ private:
 									bool updateSelectionStyle);
 
 			void				_UpdateStyleAtCaret();
+
 private:
 			TextDocumentRef		fDocument;
 			TextDocumentLayoutRef fLayout;