mirror of
https://github.com/servo/servo.git
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69 lines
2.6 KiB
JavaScript
69 lines
2.6 KiB
JavaScript
/**
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* Builds a generic structure that looks like:
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*
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* <div class="scroller"> // 100x200 viewport
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* <div class="contents"> // 100x500
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* <div class="prepadding"></div> // 100x100
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* <div class="container"> // 300x300 containing block
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* <div class="filler"></div> // 100x100
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* <div class="sticky box"></div> // 100x100
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* </div>
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* </div>
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* </div>
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*
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* If 'inline' is true, the necessary blocks will be marked as inline-block,
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* and the dimensions above are flipped.
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*
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* Returns an 'elements' object which has each of the above elements as an
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* accessible property.
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*/
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function setupStickyTest(stickyDirection, stickyOffset, inline = false) {
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const elements = {};
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elements.scroller = document.createElement('div');
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elements.scroller.style.position = 'relative';
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elements.scroller.style.width = (inline ? '200px' : '100px');
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elements.scroller.style.height = (inline ? '100px' : '200px');
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elements.scroller.style.overflow = 'scroll';
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elements.contents = document.createElement('div');
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elements.contents.style.height = (inline ? '100%' : '500px');
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elements.contents.style.width = (inline ? '500px' : '100%');
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elements.prepadding = document.createElement('div');
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elements.prepadding.style.height = (inline ? '100%' : '100px');
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elements.prepadding.style.width = (inline ? '100px' : '100%');
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if (inline)
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elements.prepadding.style.display = 'inline-block';
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elements.container = document.createElement('div');
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elements.container.style.height = (inline ? '100%' : '300px');
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elements.container.style.width = (inline ? '300px' : '100%');
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if (inline)
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elements.container.style.display = 'inline-block';
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elements.filler = document.createElement('div');
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elements.filler.style.height = (inline ? '100%' : '100px');
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elements.filler.style.width = (inline ? '100px' : '100%');
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if (inline)
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elements.filler.style.display = 'inline-block';
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elements.sticky = document.createElement('div');
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elements.sticky.style = `${stickyDirection}: ${stickyOffset}px;`;
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elements.sticky.style.position = 'sticky';
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elements.sticky.style.height = (inline ? '100%' : '100px');
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elements.sticky.style.width = (inline ? '100px' : '100%');
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elements.sticky.style.backgroundColor = 'green';
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if (inline)
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elements.sticky.style.display = 'inline-block';
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elements.scroller.appendChild(elements.contents);
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elements.contents.appendChild(elements.prepadding);
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elements.contents.appendChild(elements.container);
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elements.container.appendChild(elements.filler);
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elements.container.appendChild(elements.sticky);
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document.body.appendChild(elements.scroller);
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return elements;
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}
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