How to listen to the double click action and prevent Default by plugin?

arvinxx

We have a plugin ,want to change the default double click action of a symbolInstance.

Instead of jump to it's master, I want to open a custom panel and guide user to interact with the panel other than seeing the symbolMaster.

Is there any possible to implement this purpose?

makebe it's add an action and a callback with event.preventDefault() like browser.

kevgski

No, there's nothing simple like in JS land like that. Do you have much cocoa experience? First you will want to see how a context menu is generally called:

https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/MenuList/Articles/DisplayContextMenu.html

Custom NSViews can also implement a menu here https://developer.apple.com/documentation/appkit/nsview/1483231-menu

Anywho, then you'll need to try to figure out from the Sketch headers how exactly the menu is being shown. https://github.com/abynim/Sketch-Headers

Then, to override the existing behavior you will likely need to "swizzle" the existing methods with your own. Which follows something like this: https://nshipster.com/method-swizzling/

TLDR: I don't recommend swapping out existing behavior. Could you instead use a different shortcut after you select a symbolMaster and it would display your custom panel? That seems MUCH easier and better to start out with.

kevgski

Ah sorry I misread the behavior that you want to override. I thought it was right click, not double click. However the logic follows somewhat similar.

Understand how its generally implemented in objective-c https://developer.apple.com/documentation/appkit/nsresponder/1535349-mouseup
Understand how Sketch is currently doing it by examining the headers
Swizzle the methods that you want to change the behavior

arvinxx

kevgski

Besides, can you tell me which method should I override if you know it?

arvinxx

Thanks a lot for your reply. I have some experience to dev with Swift, so your information is clear enough. I will try later.

TLDR: I don't recommend swapping out existing behavior. Could you instead use a different shortcut after you select a symbolMaster and it would display your custom panel? That seems MUCH easier and better to start out with.

Action I thought about it too, but it's need lots effort to change our user behavior. Just change the behavior of double click is much better easy for user to response.

kevgski

Probably some mouseUp method. But there are a lot https://github.com/abynim/Sketch-Headers/search?q=mouseUp