зеркало из https://github.com/mozilla/gecko-dev.git
Bug 487946 - scrollwheel scrolling in bookmarks menu slowed down. r=enn
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5a9afe7d24
Коммит
6aef714b19
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@ -168,6 +168,8 @@
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document.defaultView.getComputedStyle(this._scrollbox, "").direction == "rtl";
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]]></field>
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<field name="_scrollTarget">null</field>
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<method name="ensureElementIsVisible">
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<parameter name="element"/>
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<parameter name="aSmoothScroll"/>
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@ -200,10 +202,12 @@
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this._stopSmoothScroll();
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if (aSmoothScroll != false && this.smoothScroll)
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if (aSmoothScroll != false && this.smoothScroll) {
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this._scrollTarget = element;
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this._smoothScrollByPixels(amountToScroll);
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else
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} else {
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this.scrollByPixels(amountToScroll);
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}
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]]></body>
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</method>
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@ -303,7 +307,7 @@
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<body><![CDATA[
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var elements = this._getScrollableElements();
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if (!elements.length)
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return;
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return null;
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if (this._isRTLScrollbox) {
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elements = Array.slice(elements);
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@ -377,6 +381,7 @@
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if (this._isScrolling) {
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clearInterval(this._smoothScrollTimer);
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this._isScrolling = 0;
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this._scrollTarget = null;
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}
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]]></body>
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</method>
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@ -426,6 +431,16 @@
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// because many users have a vertical scroll wheel but no
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// horizontal support.
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// Each mouse scroll is expected to scroll event.detail items. If a
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// previous scroll is still in progress because of smooth scrolling,
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// we need to complete it before starting a new one.
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if (this._scrollTarget) {
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let elements = this._getScrollableElements();
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if (this._scrollTarget != elements[0] &&
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this._scrollTarget != elements[elements.length - 1])
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this.ensureElementIsVisible(this._scrollTarget, false);
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}
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this.scrollByIndex(event.detail);
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event.stopPropagation();
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]]></handler>
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