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Improve Accessibility Reliability (#2609)

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* Remove WindowUiaProvider entry points
Make TerminalAutomationPeer not crash the app if creation failed.

* code format

* prefer universal initialization

Co-Authored-By: Dustin L. Howett (MSFT) <duhowett@microsoft.com>
This commit is contained in:
Carlos Zamora 2019-09-23 08:59:03 -07:00 committed by GitHub
parent bfb1484708
commit 6b415126fd
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 30 additions and 3 deletions
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12
src/cascadia/TerminalControl/TermControl.cpp
View file

@ -342,9 +342,15 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
Windows::UI::Xaml::Automation::Peers::AutomationPeer TermControl::OnCreateAutomationPeer()
{
// create a custom automation peer with this code pattern:
// (https://docs.microsoft.com/en-us/windows/uwp/design/accessibility/custom-automation-peers)
return winrt::make<winrt::Microsoft::Terminal::TerminalControl::implementation::TermControlAutomationPeer>(*this);
Windows::UI::Xaml::Automation::Peers::AutomationPeer autoPeer{ nullptr };
try
{
// create a custom automation peer with this code pattern:
// (https://docs.microsoft.com/en-us/windows/uwp/design/accessibility/custom-automation-peers)
autoPeer = winrt::make<winrt::Microsoft::Terminal::TerminalControl::implementation::TermControlAutomationPeer>(*this);
}
CATCH_LOG();
return autoPeer;
}
::Microsoft::Console::Types::IUiaData* TermControl::GetUiaData() const

11
src/cascadia/WindowsTerminal/BaseWindow.h
View file

@ -56,13 +56,24 @@ public:
return HandleDpiChange(_window.get(), wparam, lparam);
}
// TODO GitHub #2447: Properly attach WindowUiaProvider for signaling model
/*
case WM_GETOBJECT:
{
return HandleGetObject(_window.get(), wparam, lparam);
}
*/
case WM_DESTROY:
{
// TODO GitHub #2447: Properly attach WindowUiaProvider for signaling model
/*
// signal to uia that they can disconnect our uia provider
if (_pUiaProvider)
{
UiaReturnRawElementProvider(hWnd, 0, 0, NULL);
}
*/
PostQuitMessage(0);
return 0;
}

10
src/cascadia/WindowsTerminal/IslandWindow.cpp
View file

@ -161,6 +161,16 @@ void IslandWindow::OnSize(const UINT width, const UINT height)
{
if (_interopWindowHandle != nullptr)
{
// TODO GitHub #2447: Properly attach WindowUiaProvider for signaling model
/*
// set the text area to have focus for accessibility consumers
if (_pUiaProvider)
{
LOG_IF_FAILED(_pUiaProvider->SetTextAreaFocus());
}
break;
*/
// send focus to the child window
SetFocus(_interopWindowHandle);
return 0; // eat the message