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Majority of actions should give user some feedback about its progress and finish. Now we use progress cursor and status line, global status progress bar and modal progress dialogs are other forms of status feedback (to be implemented). Action should have way how to ask system to provide specific form of feedback. Initial suggestion is to specify feedback type in xml file which describes an action, together with a handler. It may look like follows: <progress_feedback type=mouse_pointer, status_line, progress_bar, progress_dialog handler=myPackage.myClass /> Combination of mouse pointer and status line feedback may be useful as well.
Assigned to new owner.
Hmm, parhaps my idea is obsolete now, but anyway passing to Jarda. Jardo either close this or take this into account in new actions design, it's up to you. My idea looks not bad to me even after the years :-) but most problems I was referring to were already solved.
Progress bar needs to be controlled by the action itself. Cursor is done by asynchronous() actions automatically. I do not think I want to do anything else.