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Alex Rivera
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I'm creating a map editing webapp where we can create and edit polylines, polygons etc. I've some trouble finding informations on undo implementation on the web, I find whining about "we need undo" and "here is my Command pattern using closures" but I think between that and a full undo/redo interface there is quite some road. So, here are my questions (good candidate for wiki I think): Should I manage the stack, or is there a way to send my commands to the browser's stack ? (and how do I handle native commands, like text edits in textifields in this case) how do I handle "command compression" (command grouping) when some commands are browser native How do I detect the undo ( ctrl + z ) keystroke? If I register a keyup event, how do I decide if I prevent default or not? If not, can I register some undoevent handler somewhere ? Users are not used to undo on the web, how can I "train" them to explore/undo on my application ?
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