implement undo redo in flex

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Hi..
i want undo/redo functionality in flex, i got this link this but i cant use this as i have to use library file for this. i got another link this,
but still its not properly working like undo/redo ..
how can i implement this??
thanks

Posted 5-Oct-11 3:20am

niravsahayata

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Sagar Rawal · Answer 1 · 2011-10-14T19:57:00

private var currentIndex:int = 0;

private function txtTemplate_change():void
{
arrChanges.push(txtTemplate.htmlText);
currentDataIndex = arrChanges.length - 1;
}

/** Undo changes **/
private function btnUndo_click():void
{
if(currentDataIndex >= -1)
{
txtTemplate.htmlText = arrChanges[currentDataIndex];
currentDataIndex--;
}
}

/** Redo Changes **/
private function btnRedo_click():void
{
if(currentDataIndex+1 < arrChanges.length)
{
currentDataIndex++;
txtTemplate.htmlText = arrChanges[currentDataIndex];
}
}

TorstenH. · Answer 2 · 2011-10-05T03:39:00

the first link looks fine to me. Add the SWC-File to your library and go for it.

Other solution: write the component yourself.

It's a Textfield that detects the keyboard shortcut "ctrl & Z". It also stores the value that was set before and in case of shortcut replaces the current value with the stored. Should not be such a big deal - also it's nasty if a library is available.

implement undo redo in flex

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