Add features to java swing application (repost)

This is a development that will go towards adding 'intellisense' based on xml schema to an XML editor application. This means that context-sensitive popup should be displayed showing the list of allowed entries at that location. For example pressing the 'less than' (<) key should display the list of allowed elements and similarly for attributes, entities etc. This kind of popup is known by other names such as 'codeassist', 'codesense', 'sensex'(TM) etc. Also undo/redo support has to be added to the grid component which is a swing JTreeTable. Undo/redo already exists for text view and now needed for grid view. Code folding is available in some products like jcreator, netbeans etc. Allows user to fold some sections of code in the text editor so he sees what he wants to see. This may require knowledge of swing JEditorPane text component. Based on his performance in this project, additional work may be available in the future. The duration of the project will be 3 months. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). 4) There should be a easily understandable, minimal, well-commented, clean interface from the buyer's exisiting code to the seller written code. 5) All new code that is developed should be well documented with comments wherever necessary. ## Platform The buyer's application after integration of the seller's code should run on windows OS running jdk1.4.0 or higher and JAXP1.3.