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git://source.winehq.org/git/wine.git
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uiautomationcore: Create UI Automation client thread.
Signed-off-by: Connor McAdams <cmcadams@codeweavers.com>
This commit is contained in:
parent
41dd89a8e4
commit
8642e96c19
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@ -427,6 +427,7 @@ static ULONG WINAPI uia_provider_AddRef(IWineUiaProvider *iface)
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return ref;
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}
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static void uia_stop_client_thread(void);
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static ULONG WINAPI uia_provider_Release(IWineUiaProvider *iface)
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{
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struct uia_provider *prov = impl_from_IWineUiaProvider(iface);
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@ -436,7 +437,10 @@ static ULONG WINAPI uia_provider_Release(IWineUiaProvider *iface)
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if (!ref)
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{
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if (prov->node)
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{
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IWineUiaNode_Release(prov->node);
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uia_stop_client_thread();
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}
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else
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IRawElementProviderSimple_Release(prov->elprov);
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heap_free(prov);
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@ -772,6 +776,154 @@ HRESULT WINAPI UiaNodeFromProvider(IRawElementProviderSimple *elprov, HUIANODE *
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return hr;
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}
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/*
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* UI Automation client thread functions.
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*/
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struct uia_client_thread
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{
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CO_MTA_USAGE_COOKIE mta_cookie;
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HANDLE hthread;
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HWND hwnd;
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LONG ref;
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};
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static struct uia_client_thread client_thread;
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static CRITICAL_SECTION client_thread_cs;
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static CRITICAL_SECTION_DEBUG client_thread_cs_debug =
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{
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0, 0, &client_thread_cs,
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{ &client_thread_cs_debug.ProcessLocksList, &client_thread_cs_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": client_thread_cs") }
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};
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static CRITICAL_SECTION client_thread_cs = { &client_thread_cs_debug, -1, 0, 0, 0, 0 };
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#define WM_UIA_CLIENT_GET_NODE_PROV (WM_USER + 1)
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#define WM_UIA_CLIENT_THREAD_STOP (WM_USER + 2)
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static HRESULT create_wine_uia_nested_node_provider(struct uia_node *node, LRESULT lr);
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static LRESULT CALLBACK uia_client_thread_msg_proc(HWND hwnd, UINT msg, WPARAM wparam,
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LPARAM lparam)
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{
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switch (msg)
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{
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case WM_UIA_CLIENT_GET_NODE_PROV:
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return create_wine_uia_nested_node_provider((struct uia_node *)lparam, (LRESULT)wparam);
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default:
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break;
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}
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return DefWindowProcW(hwnd, msg, wparam, lparam);
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}
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static DWORD WINAPI uia_client_thread_proc(void *arg)
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{
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HANDLE initialized_event = arg;
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HWND hwnd;
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MSG msg;
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hwnd = CreateWindowW(L"Message", NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
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if (!hwnd)
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{
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WARN("CreateWindow failed: %ld\n", GetLastError());
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FreeLibraryAndExitThread(huia_module, 1);
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}
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SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)uia_client_thread_msg_proc);
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client_thread.hwnd = hwnd;
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/* Initialization complete, thread can now process window messages. */
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SetEvent(initialized_event);
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TRACE("Client thread started.\n");
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while (GetMessageW(&msg, NULL, 0, 0))
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{
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if (msg.message == WM_UIA_CLIENT_THREAD_STOP)
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break;
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TranslateMessage(&msg);
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DispatchMessageW(&msg);
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}
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TRACE("Shutting down UI Automation client thread.\n");
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DestroyWindow(hwnd);
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FreeLibraryAndExitThread(huia_module, 0);
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}
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static BOOL uia_start_client_thread(void)
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{
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BOOL started = TRUE;
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EnterCriticalSection(&client_thread_cs);
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if (++client_thread.ref == 1)
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{
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HANDLE ready_event = NULL;
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HANDLE events[2];
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HMODULE hmodule;
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DWORD wait_obj;
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HRESULT hr;
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/*
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* We use CoIncrementMTAUsage here instead of CoInitialize because it
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* allows us to exit the implicit MTA immediately when the thread
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* reference count hits 0, rather than waiting for the thread to
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* shutdown and call CoUninitialize like the provider thread.
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*/
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hr = CoIncrementMTAUsage(&client_thread.mta_cookie);
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if (FAILED(hr))
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{
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started = FALSE;
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goto exit;
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}
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/* Increment DLL reference count. */
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GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
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(const WCHAR *)uia_start_client_thread, &hmodule);
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events[0] = ready_event = CreateEventW(NULL, FALSE, FALSE, NULL);
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if (!(client_thread.hthread = CreateThread(NULL, 0, uia_client_thread_proc,
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ready_event, 0, NULL)))
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{
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FreeLibrary(hmodule);
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started = FALSE;
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goto exit;
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}
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events[1] = client_thread.hthread;
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wait_obj = WaitForMultipleObjects(2, events, FALSE, INFINITE);
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if (wait_obj != WAIT_OBJECT_0)
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{
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CloseHandle(client_thread.hthread);
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started = FALSE;
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}
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exit:
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if (ready_event)
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CloseHandle(ready_event);
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if (!started)
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{
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WARN("Failed to start client thread\n");
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if (client_thread.mta_cookie)
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CoDecrementMTAUsage(client_thread.mta_cookie);
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memset(&client_thread, 0, sizeof(client_thread));
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}
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}
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LeaveCriticalSection(&client_thread_cs);
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return started;
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}
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static void uia_stop_client_thread(void)
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{
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EnterCriticalSection(&client_thread_cs);
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if (!--client_thread.ref)
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{
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PostMessageW(client_thread.hwnd, WM_UIA_CLIENT_THREAD_STOP, 0, 0);
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CoDecrementMTAUsage(client_thread.mta_cookie);
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CloseHandle(client_thread.hthread);
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memset(&client_thread, 0, sizeof(client_thread));
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}
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LeaveCriticalSection(&client_thread_cs);
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}
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static HRESULT create_wine_uia_nested_node_provider(struct uia_node *node, LRESULT lr)
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{
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IGlobalInterfaceTable *git;
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@ -781,7 +933,10 @@ static HRESULT create_wine_uia_nested_node_provider(struct uia_node *node, LRESU
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hr = ObjectFromLresult(lr, &IID_IWineUiaNode, 0, (void **)&nested_node);
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if (FAILED(hr))
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{
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uia_stop_client_thread();
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return hr;
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}
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prov = heap_alloc_zero(sizeof(*prov));
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if (!prov)
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@ -809,22 +964,34 @@ exit:
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return hr;
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}
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/*
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* UiaNodeFromHandle is expected to work even if the calling thread hasn't
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* initialized COM. We marshal our node on a separate thread that initializes
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* COM for this reason.
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*/
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static HRESULT uia_get_provider_from_hwnd(struct uia_node *node)
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{
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LRESULT lr;
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if (!uia_start_client_thread())
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return E_FAIL;
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SetLastError(NOERROR);
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lr = SendMessageW(node->hwnd, WM_GETOBJECT, 0, UiaRootObjectId);
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if (GetLastError() == ERROR_INVALID_WINDOW_HANDLE)
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{
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uia_stop_client_thread();
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return UIA_E_ELEMENTNOTAVAILABLE;
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}
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if (!lr)
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{
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FIXME("No native UIA provider for hwnd %p, MSAA proxy currently unimplemented.\n", node->hwnd);
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uia_stop_client_thread();
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return E_NOTIMPL;
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}
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return create_wine_uia_nested_node_provider(node, lr);
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return SendMessageW(client_thread.hwnd, WM_UIA_CLIENT_GET_NODE_PROV, (WPARAM)lr, (LPARAM)node);
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}
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/***********************************************************************
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