The latest version of AvalonEdit can be found as part of the SharpDevelop project. +For details on AvalonEdit, please see www.avalonedit.net.
-
+As you can see in this dependency graph, AvalonEdit consists of a few sub-namespaces that have cleanly separated jobs. Most of the namespaces have a kind of 'main' class.
Here is the visual tree of the TextEditor control:
-
+
It's important to understand that AvalonEdit is a composite control with the three layers: TextEditor (main control), TextArea (editing), TextView (rendering).
While the main control provides some convenience methods for common tasks, for most advanced features you have to work directly with the inner controls. You can access them using textEditor.TextArea
@@ -188,7 +191,7 @@ It takes care of getting the document onto the screen.
To do this in an extensible way, the TextView uses its own kind of model: the VisualLine.
Visual lines are created only for the visible part of the document.
The rendering process looks like this:
-
+
The last step in the pipeline is the conversion to one or more System.Windows.Media.TextFormatting.TextLine instances. WPF then takes care of the actual text rendering.
The "element generators", "line transformers" and "background renderers" are the extension points; it is possible to add custom implementations of
@@ -331,7 +334,7 @@ especially in languages like C# where sequences of
Here's how you can use it:
- For the sake of completeness, here is the implementation of the // or ///<
You only have to handle the text entering events to determine when you want to show the window; all the UI is already done for you.
// in the constructor:
+
// in the constructor:
textEditor.TextArea.TextEntering += textEditor_TextArea_TextEntering;
textEditor.TextArea.TextEntered += textEditor_TextArea_TextEntered;
}
@@ -375,7 +378,7 @@ The CompletionWindow will actually never have focus - instead, it h
on the text area and passes them through its ListBox.
This allows selecting entries in the completion list using the keyboard and normal typing in the editor at the same time.
MyCompletionData class used in the code above:
-/// Implements AvalonEdit ICompletionData interface to provide the entries in the
+
/// Implements AvalonEdit ICompletionData interface to provide the entries in the
/// completion drop down.
public class MyCompletionData : ICompletionData
{