How to write a Source code editor for custom Language in Rich Client Plateform?

I am building a tool for a custom language. It will have many components including a source code editor. What are the coponents I will need to build this editor. I would like syntax highlighting, outline and formating to start with.

I have alre开发者_开发技巧ady developed a parser using ANTLR.

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If you really want to/need to create your DSL and the editor for it "by hand", then I suggest using the JFace Text framework to create the editor.

However, although you said that you already have a parser, I strongly suggest you take a look at Xtext and see if it suits your needs. It gives you a way to define your DSL and automatically generates an editor with syntax highlighting, code completion, and so on. And AFAIK, it uses ANTLR underneath to generate a parser. With Xtext, you can also create a compiler (or interpreter) for your language.

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I think Xtext is exactly what you are looking for. With Xtext you define a DSL and then you can launch a custom Eclipse which provides code completion, syntax highlighting etc for the DSL you defined.

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Look at the JEditorPane and its associated Document. This can be used to highlight. Also look at http://download.oracle.com/javase/tutorial/uiswing/components/editorpane.html for further information on how to customise the document, specifically, the StyledDocument.