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81 bytes added ,  12:46, 3 April 2009
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'''Description'''
 
'''Description'''
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Initially, navigation-main row would be initiated with widget-id say 0 and delete to be false  
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Initially, navigation-main row will be initiated with widget-id say 0 and delete will be false  
When user drags an widget on canvas, new widget would be created and a new entry comes in navigation-main table. Similarly children-widgets are created and subsequent entries will be given in specific tables. For undo operation, navigation-row entry for "delete" can be set to false, similarly for redo operation, entry would be false again.
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When user drags an widget on canvas, new widget will be created and a new entry comes in navigation-main table. Similarly children-widgets are created and subsequent entries will be given in specific tables. In this way, a whole tree-view of UI application would then be saved in database.
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For undo operation, navigation-row entry for "delete" can be set to true, similarly for redo operation, entry would be false again.
     
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