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Various bug fixes in the grid, implemented prefetching, workaround for performance issues regarding update, removed _lastModification

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This commit is contained in:
Andreas Stöckel
2012-03-26 15:28:02 +00:00
parent 5e9a768fb1
commit 34a43e8869
8 changed files with 200 additions and 134 deletions
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27
etemplate/js/et2_core_common.js
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@ -659,3 +659,30 @@ function et2_rangeEqual(_ar1, _ar2)
return _ar1.top === _ar2.top && _ar1.bottom === _ar2.bottom;
}
/**
* Substracts _ar2 from _ar1, returns an array of new ranges.
*/
function et2_rangeSubstract(_ar1, _ar2)
{
// Per default return the complete _ar1 range
var res = [_ar1];
// Check whether there is an intersection between the given ranges
if (et2_rangeIntersect(_ar1, _ar2))
{
res = [et2_bounds(_ar1.top, _ar2.top),
et2_bounds(_ar2.bottom, _ar1.bottom)];
}
// Remove all zero-length ranges from the result
for (var i = res.length - 1; i >= 0; i--)
{
if (res[i].bottom - res[i].top <= 0)
{
res.splice(i, 1);
}
}
return res;
}