Trait BrowserPaneCloseOps 

pub trait BrowserPaneCloseOps {
    // Required methods
    fn take_browser_hwnd(&self, label: &str) -> Option<usize>;
    fn destroy_hwnd(&self, hwnd: usize);
}

Abstraction over the CEF-side operations close() performs on the host process. Production implements this over &Arc<AppState> and Win32; tests implement it with a recording mock so the close-path state machine can be exercised without real CEF/HWNDs.

Kept minimal (just two methods) to avoid a dependency graph that has to be updated every time close() grows. Other ops (focus, resize, …) can gain their own traits when they need testing, or graduate to a unified BrowserPaneCefBridge once the shape is stable.

Required Methods

fn take_browser_hwnd(&self, label: &str) -> Option<usize>

Remove the Browser for this label from the registry. Return its outer HWND as a pointer-sized value, or None if there is no Browser or no HWND. Dropping the Browser Arc is the implementation’s responsibility — production drops before returning so Chromium’s refcount isn’t held by our scope.

fn destroy_hwnd(&self, hwnd: usize)

Destroy the given HWND. Production calls Win32 DestroyWindow. Called only with values returned from take_browser_hwnd.

Implementors

impl<'a> BrowserPaneCloseOps for AppStateCloseOps<'a>