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Bug 788401 Avoid JS warnings in EventUtils.synthesizeWheel() r=smaug

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This commit is contained in:
Masayuki Nakano 2012-09-07 09:53:27 +09:00
parent adfd0d30c9
commit f4a88425eb
1 changed files with 14 additions and 3 deletions
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17
testing/mochitest/tests/SimpleTest/EventUtils.js
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@ -305,6 +305,18 @@ function synthesizeWheel(aTarget, aOffsetX, aOffsetY, aEvent, aWindow)
}
var isPixelOnlyDevice =
aEvent.isPixelOnlyDevice && aEvent.deltaMode == WheelEvent.DOM_DELTA_PIXEL;
// Avoid the JS warnings "reference to undefined property"
if (!aEvent.deltaX) {
aEvent.deltaX = 0;
}
if (!aEvent.deltaY) {
aEvent.deltaY = 0;
}
if (!aEvent.deltaZ) {
aEvent.deltaZ = 0;
}
var lineOrPageDeltaX =
aEvent.lineOrPageDeltaX != null ? aEvent.lineOrPageDeltaX :
aEvent.deltaX > 0 ? Math.floor(aEvent.deltaX) :
@ -313,11 +325,10 @@ function synthesizeWheel(aTarget, aOffsetX, aOffsetY, aEvent, aWindow)
aEvent.lineOrPageDeltaY != null ? aEvent.lineOrPageDeltaY :
aEvent.deltaY > 0 ? Math.floor(aEvent.deltaY) :
Math.ceil(aEvent.deltaY);
var rect = aTarget.getBoundingClientRect();
utils.sendWheelEvent(rect.left + aOffsetX, rect.top + aOffsetY,
aEvent.deltaX ? aEvent.deltaX : 0.0,
aEvent.deltaY ? aEvent.deltaY : 0.0,
aEvent.deltaZ ? aEvent.deltaZ : 0.0,
aEvent.deltaX, aEvent.deltaY, aEvent.deltaZ,
aEvent.deltaMode, modifiers,
lineOrPageDeltaX, lineOrPageDeltaY, options);
}