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Focus - Notify WPF when Browser has focus #6

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amaitland opened this issue Oct 9, 2020 · 0 comments

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amaitland commented Oct 9, 2020 •

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Directly clicking the mouse in the browser and CEF will recieve focus, we need to let WPF know that our HWND host has focus in this scenario.

We need to set the Logical focus, not the actual focus.
Something like the following might work.

var focusScope = FocusManager.GetFocusScope(this);
if (FocusManager.GetFocusedElement(focusScope) != this)
{
    FocusManager.SetFocusedElement(focusScope, this);
}

https://referencesource.microsoft.com/#PresentationCore/Core/CSharp/System/Windows/UIElement.cs,2647

When the browser directly gets focus IFocusHandler.OnGotFocus should be called.

Follow up to #5

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