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Clean up some mouse workarounds 

Adds comments that clarifies why they are needed. Also narrows the
handler for contextmenu a bit.
This commit is contained in:
Samuel Mannehed 2017-02-14 16:22:56 +01:00
parent 1658466579
commit b69dda9b19
1 changed files with 13 additions and 6 deletions
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19
core/input/devices.js
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@ -198,7 +198,7 @@
},
_releaseMouse: function () {
Util.releaseCapture(this._target);
Util.releaseCapture();
this._mouseCaptured = false;
},
@ -330,7 +330,12 @@
if (!this._focused) { return true; }
var evt = (e ? e : window.event);
/* Stop propagation if inside canvas area */
/*
* Stop propagation if inside canvas area
* Note: This is only needed for the 'click' event as it fails
* to fire properly for the target element so we have
* to listen on the document element instead.
*/
if (evt.target == this._target) {
//Util.Debug("mouse event disabled");
Util.stopEvent(e);
@ -357,9 +362,12 @@
c.addEventListener('mousemove', this._eventHandlers.mousemove);
c.addEventListener('wheel', this._eventHandlers.mousewheel);
/* Work around right and middle click browser behaviors */
/* Prevent middle-click pasting (see above for why we bind to document) */
document.addEventListener('click', this._eventHandlers.mousedisable);
document.body.addEventListener('contextmenu', this._eventHandlers.mousedisable);
/* preventDefault() on mousedown doesn't stop this event for some
reason so we have to explicitly block it */
c.addEventListener('contextmenu', this._eventHandlers.mousedisable);
},
ungrab: function () {
@ -377,10 +385,9 @@
c.removeEventListener('mousemove', this._eventHandlers.mousemove);
c.removeEventListener('wheel', this._eventHandlers.mousewheel);
/* Work around right and middle click browser behaviors */
document.removeEventListener('click', this._eventHandlers.mousedisable);
document.body.removeEventListener('contextmenu', this._eventHandlers.mousedisable);
c.removeEventListener('contextmenu', this._eventHandlers.mousedisable);
}
};