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Fix [1142] remaining mouseEnter/mouseLeave deprecations by adding eve… #1143

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merged 2 commits into from
May 9, 2020

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fpauser
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@fpauser fpauser commented Apr 2, 2020

…nt listeners

this.element.removeEventListener('mouseleave', this._mouseLeaveHandler);

this._mouseEnterHandler = undefined;
this._mouseLeaveHandler = undefined;
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@fpauser Why do we have to define a handler property to store the action and then clear it in will destroy ? Instead we can directly assign the actions to event listener and remove it in will destroy hook.

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Its needed because bind() returns a new function bound to this with each call. To have removeEventListener remove our handler we have to give it the exact same handler function that was given to addEventHandler.

this.handleMouseEnter.bind(this) !== this.handleMouseEnter.bind(this)

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Otherwise we'd produce leaks.

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That is a good insight. Thanks

@fpauser
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fpauser commented Apr 16, 2020

Can we have a fresh release with the fix?

@miguelcobain miguelcobain merged commit c0fe0a7 into miguelcobain:master May 9, 2020
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Thanks, @fpauser!
A new release is coming shortly.

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3 participants