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Currently selectTreeItem, as used by various devtools storage panel tests, expands the tree then clicks items. However, it fails to account for the fact that expansion animations may mean that the item that should be selected is not yet able to be clicked. It currently happens to be lucky enough that typically the animation is short enough that the item in question will be click-able in time (since click() spins the event loop using executeSoon there is some time for the animation to play). If we make animations wait until their first frame has rendered before beginning the chance that the tree item will become clickable in time is reduced. This patch works around that by looking for animating branches amongst the ancestors of the item to be selected. If one is found it waits for the animation to end. Unfortunately this ties the tests to the tree widget styles somewhat (in particular the test looks for specified values of max-height). However, these changes only delay the execution of the test so, if these styles were to change, it is only likely that these tests would fail (and hence need to be updated) than to mask a genuine bug. Until the Web Animations API is available by default it is difficult to test if animations are running so this seems like the best we can do for now. |
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| devtools | ||
| docs | ||
| experiments | ||
| extensions | ||
| fuel | ||
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| defs.mk | ||
| LICENSE | ||
| Makefile.in | ||
| moz.build | ||