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@ -1335,41 +1335,6 @@ var matrixSnapshotPoller = (function() { |
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/******************************************************************************/ |
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// https://github.com/gorhill/uMatrix/pull/441
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// Make the header scroll horizontally with the document.
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// Ref.: resource-considerate scroll handler:
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// https://developer.mozilla.org/en-US/docs/Web/Events/scroll#Example
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// Won't cause DOM changes from within scroll handler.
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var lastScrollX = 0; |
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var onScrollThrottledFired = false; |
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var onScrollThrottled = function() { |
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lastScrollX = window.scrollX; |
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var style = document.querySelector('.paneHead').style; |
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if ( lastScrollX === 0 ) { |
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style.removeProperty('left'); |
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} else { |
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style.setProperty('left', '-' + lastScrollX + 'px'); |
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} |
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onScrollThrottledFired = false; |
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}; |
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var onScroll = function() { |
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if ( onScrollThrottledFired || window.scrollX === lastScrollX ) { |
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return; |
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} |
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onScrollThrottledFired = true; |
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self.requestAnimationFrame(onScrollThrottled); |
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}; |
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if ( typeof self.requestAnimationFrame === 'function' ) { |
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document.addEventListener('scroll', onScroll); |
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} |
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/******************************************************************************/ |
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// Below is UI stuff which is not key to make the menu, so this can
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// be done without having to wait for a tab to be bound to the menu.
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