Unhook the mouse down hook at the end of PropertyGridView.ProcessEnumUpAndDown #12508
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## main #12508 +/- ##
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+ Coverage 75.73242% 75.83103% +0.09860%
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Files 3153 3163 +10
Lines 635807 636411 +604
Branches 46975 47000 +25
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+ Hits 481512 482597 +1085
+ Misses 150870 150351 -519
- Partials 3425 3463 +38
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I proceeded to test the changes made in this PR and the problem seems to be solved:
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…UpAndDown (dotnet#12508) * Unhook the mouse down hook at the end of PropertyGridView.ProcessEnumUpAndDown * Removing ? from code line "EditTextBox?.SelectAll();"
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…r experience in dropdown type editors in property grid (#12605) Backport of #12508, #12431, #12356 and #12479 to release/9.0 Fixes #12607 NET10 Bugs: #12434, #12421, #12440, #12031 Bug Description There are four issues that occur when using the up/down keys to switch property values in the property page. When navigating to "Auto Size" dropdown using the up/down arrow keys, it is getting auto selected without hitting ENTER After using Tab to switch property values, then using the up/down keys to switch items in the drop-down box expanded by F4 will cause the drop-down box to collapse directly [Accessibility] When using up/down to toggle property value on edit text box, The Accessibility rectangle focuses on the entire property row instead of the original edit text box [Accessibility] Narrator cannot announce items correctly when switching the items by using up/down keyboard arrow that without expand the dropdown list panel Customer Impact PropertyGrid drop down type editor does not support conventional keyboard navigation. Usually, selection is committed when the ENTER key is pressed. However, in this case value is committed on the Down arrow press. Then the drop down list is expanded, the screen reader user might want to navigate through all values in the drop down using the arrows, on each arrow key press the new item should be presented (and announced) in the selection text box, however, the drop down is closed on the first arrow key. According to the accessibility SMEs, this is a major problem - the keyboard users are losing their work by committing a wrong value. Screen reader user don't get correct feedback when navigating through the drop down list.
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Fixes #12434
Root cause:
After changing the value by pressing up/down keyboard directly in EditTextbox, the
EditTextBox.HookMouseDownwill be set to TrueThe stack trace:
then pressing
Alt+Downto open the DropDown list, and select a item, the CommitValue will be invoked.At this time,
EditTextBox.HookMouseDown = true. In HookMouseDown, theFocus()was invoked, so the DropDown list was collapsed.Proposed changes
EditTextBox.HookMouseDown = falseat the end of PropertyGridView.ProcessEnumUpAndDownCustomer Impact
Regression?
Risk
Screenshots
Before
Pressing Up/Down keyboard in drop-down list of property collapses dropdown directly.
After
When pressing the up/down keyboard in the property drop-down list, the drop-down menu will not be collapsed directly
Test methodology
Test environment(s)
Microsoft Reviewers: Open in CodeFlow