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How to make custom "breakpoints" in the undo/redo history?

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146714 Aug 15,2019 01:34 PM UTC Aug 27,2019 12:28 PM UTC Xamarin.Forms 3
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Tags: SfImageEditor
Marco Negroni
Asked On August 15, 2019 01:34 PM UTC

Good afternoon, how to make custom "breakpoints" in the undo/redo history? I mean i developed external features and i would like to integrate them in the undo/redo history.

Thanks in advance,
Best regards

Rachel A [Syncfusion]
Replied On August 19, 2019 12:20 PM UTC

Hi Marco, 
 
Greetings from Syncfusion. 
 
Undo and redo changes can be performed only for some operations as mentioned in the below documentation link. 
 
 
The undo and redo history changes are maintained internally, and it is not possible to expose it. So, provide detailed information on the requirement which will be helpful to provide you a solution. 
 
Thanks, 
Rachel. 


Marco Negroni
Replied On August 26, 2019 07:48 AM UTC

Good morning, i developed custom features for the editor (invert colors and threshold filter), i would like to use the built in undo/redo to allow the user to go back.

Thanks in advance

Rachel A [Syncfusion]
Replied On August 27, 2019 12:28 PM UTC

Hi Marco, 
 
As we have informed earlier, the undo and redo history changes are maintained internally. Also, as you are using the custom features it is not possible to integrate it inside the list or expose it. You can also maintain the list by adding every operation you perform using the custom features in the image and remove or add from the list based on the undo or redo action. 
 
Thanks, 
Rachel.  


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