サブツリーを折り畳めない設定のとき、favicon付近をクリックしてもタブのフォーカスが切り替わらないことがあったのを修正
git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@6261 599a83e7-65a4-db11-8015-0010dcdd6dc2
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@ -454,7 +454,10 @@ var TreeStyleTabUtils = {
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isEventFiredOnTwisty : function TSTUtils_isEventFiredOnTwisty(aEvent)
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{
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var tab = this.getTabFromEvent(aEvent);
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if (!tab || !this.hasChildTabs(tab)) return false;
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if (!tab ||
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!this.hasChildTabs(tab) ||
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!this.canCollapseSubtree(tab))
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return false;
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var expression = 'ancestor-or-self::*[@class="'+this.kTWISTY+'"]';
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if (this.shouldExpandTwistyArea && !this._expandTwistyAreaBlockers.length)
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