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max-height/offsetHeight Calculation Issue, Fixes #2581 #2700

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max-height/offsetHeight Calculation Issue, Fixes #2581 #2700

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13 changes: 13 additions & 0 deletions js/bootstrap-select.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2118,6 +2118,16 @@
if (doneButton) menu.appendChild(doneButton);
newElement.appendChild(menu);

var newElementAnchor = $('a', $(li));
// Get 'visible' css items to restore after calculation is done
var newElementAnchorDisplay = newElementAnchor.css('display');
var newElementAnchorVisibility = newElementAnchor.css('visibility');
newElementAnchor.show(); // always make sure first item is shown, otherwise offsetHeight = 0
if (newElementAnchor.text() === '') {
// If blank, set text to non-breaking space otherwise offsetHeight = 8 (or some portion of full height)
newElementAnchor.text = ' ';
}

document.body.appendChild(newElement);

var liHeight = li.offsetHeight,
Expand Down Expand Up @@ -2170,6 +2180,9 @@
this.sizeInfo.scrollBarWidth = scrollBarWidth;
this.sizeInfo.selectHeight = this.$newElement[0].offsetHeight;

if (newElementAnchorDisplay !== undefined && newElementAnchorDisplay !== '') newElementAnchor.css('display', newElementAnchorDisplay);
if (newElementAnchorVisibility !== undefined && newElementAnchorVisibility !== '') newElementAnchor.css('visibility', newElementAnchorVisibility);

this.setPositionData();
},

Expand Down