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fix(slider): work around slidestart event sometimes not firing on iOS (#6009)

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This commit is contained in:
mmalerba
2017-07-27 09:43:26 -07:00
committed by Andrew Seguin
parent ee73d2c173
commit a87a0005e4
1 changed files with 12 additions and 3 deletions
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src/lib/slider/slider.ts
+12 -3
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@@ -452,6 +452,12 @@ export class MdSlider extends _MdSliderMixinBase
return;
}
// The slide start event sometimes fails to fire on iOS, so if we're not already in the sliding
// state, call the slide start handler manually.
if (!this._isSliding) {
this._onSlideStart(null);
}
// Prevent the slide from selecting anything else.
event.preventDefault();
this._updateValueFromPosition({x: event.center.x, y: event.center.y});
@@ -460,7 +466,7 @@ export class MdSlider extends _MdSliderMixinBase
this._emitInputEvent();
}
_onSlideStart(event: HammerInput) {
_onSlideStart(event: HammerInput | null) {
if (this.disabled) {
return;
}
@@ -468,10 +474,13 @@ export class MdSlider extends _MdSliderMixinBase
// Simulate mouseenter in case this is a mobile device.
this._onMouseenter();
event.preventDefault();
this._isSliding = true;
this._renderer.addFocus();
this._updateValueFromPosition({x: event.center.x, y: event.center.y});
if (event) {
this._updateValueFromPosition({x: event.center.x, y: event.center.y});
event.preventDefault();
}
}
_onSlideEnd() {