Remove code in ChromeAppView that used winrt_utils::FindCoreWindow. Remove FindCoreWindow.

BUG=15171
TEST=NONE


Review URL: https://chromiumcodereview.appspot.com/13933009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@193719 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 28 insertions, 50 deletions

diff --git a/win8/metro_driver/chrome_app_view.cc b/win8/metro_driver/chrome_app_view.cc
index 4c177a7..ef2baf7 100644
--- a/win8/metro_driver/chrome_app_view.cc
+++ b/win8/metro_driver/chrome_app_view.cc
@@ -4,24 +4,23 @@
 
 #include "win8/metro_driver/stdafx.h"
 #include "win8/metro_driver/chrome_app_view.h"
-#include "win8/metro_driver/direct3d_helper.h"
 
-#include <algorithm>
+#include <corewindow.h>
 #include <windows.applicationModel.datatransfer.h>
 #include <windows.foundation.h>
 
+#include <algorithm>
+
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/win/metro.h"
-
-#include "ui/gfx/native_widget_types.h"
-#include "ui/metro_viewer/metro_viewer_messages.h"
-
 // This include allows to send WM_SYSCOMMANDs to chrome.
 #include "chrome/app/chrome_command_ids.h"
+#include "ui/base/ui_base_switches.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/metro_viewer/metro_viewer_messages.h"
 #include "win8/metro_driver/metro_driver.h"
 #include "win8/metro_driver/winrt_utils.h"
-#include "ui/base/ui_base_switches.h"
 
 typedef winfoundtn::ITypedEventHandler<
     winapp::Core::CoreApplicationView*,
@@ -150,12 +149,13 @@ void SendMnemonic(WORD mnemonic_char, Modifier modifiers, bool extended,
 // ICoreApplicationExit::Exit function in a background delayed task which
 // ensures that chrome exits.
 void MetroExit(bool send_alt_f4_mnemonic) {
-  if (send_alt_f4_mnemonic && globals.core_window == ::GetForegroundWindow()) {
+  if (send_alt_f4_mnemonic && globals.view &&
+      globals.view->core_window_hwnd() == ::GetForegroundWindow()) {
     DVLOG(1) << "We are in the foreground. Exiting via Alt F4";
     SendMnemonic(VK_F4, ALT, false, false);
     DWORD core_window_process_id = 0;
     DWORD core_window_thread_id = GetWindowThreadProcessId(
-        globals.core_window, &core_window_process_id);
+        globals.view->core_window_hwnd(), &core_window_process_id);
     if (core_window_thread_id != ::GetCurrentThreadId()) {
       globals.appview_msg_loop->PostDelayedTask(
         FROM_HERE,
@@ -164,13 +164,12 @@ void MetroExit(bool send_alt_f4_mnemonic) {
     }
   } else {
     globals.app_exit->Exit();
-    globals.core_window = NULL;
   }
 }
 
 void AdjustToFitWindow(HWND hwnd, int flags) {
   RECT rect = {0};
-  ::GetWindowRect(globals.core_window, &rect);
+  ::GetWindowRect(globals.view->core_window_hwnd() , &rect);
   int cx = rect.right - rect.left;
   int cy = rect.bottom - rect.top;
 
@@ -436,7 +435,7 @@ void MetroUnsnap() {
 extern "C" __declspec(dllexport)
 HWND GetRootWindow() {
   DVLOG(1) << __FUNCTION__;
-  return globals.core_window;
+  return globals.view->core_window_hwnd();
 }
 
 extern "C" __declspec(dllexport)
@@ -639,7 +638,7 @@ DWORD WINAPI HostMainThreadProc(void*) {
 
   globals.g_core_proc =
       reinterpret_cast<WNDPROC>(::SetWindowLongPtr(
-          globals.core_window, GWLP_WNDPROC,
+          globals.view->core_window_hwnd(), GWLP_WNDPROC,
           reinterpret_cast<LONG_PTR>(ChromeAppView::CoreWindowProc)));
   DWORD exit_code = globals.host_main(globals.host_context);
 
@@ -650,7 +649,8 @@ DWORD WINAPI HostMainThreadProc(void*) {
 
 ChromeAppView::ChromeAppView()
     : osk_visible_notification_received_(false),
-      osk_offset_adjustment_(0) {
+      osk_offset_adjustment_(0),
+      core_window_hwnd_(NULL) {
   globals.previous_state =
       winapp::Activation::ApplicationExecutionState_NotRunning;
 }
@@ -663,7 +663,6 @@ IFACEMETHODIMP
 ChromeAppView::Initialize(winapp::Core::ICoreApplicationView* view) {
   view_ = view;
   DVLOG(1) << __FUNCTION__;
-  globals.main_thread_id = ::GetCurrentThreadId();
 
   HRESULT hr = view_->add_Activated(mswr::Callback<ActivatedHandler>(
       this, &ChromeAppView::OnActivate).Get(),
@@ -677,7 +676,14 @@ ChromeAppView::SetWindow(winui::Core::ICoreWindow* window) {
   window_ = window;
   DVLOG(1) << __FUNCTION__;
 
-  HRESULT hr = url_launch_handler_.Initialize();
+  // Retrieve the native window handle via the interop layer.
+  mswr::ComPtr<ICoreWindowInterop> interop;
+  HRESULT hr = window->QueryInterface(interop.GetAddressOf());
+  CheckHR(hr);
+  hr = interop->get_WindowHandle(&core_window_hwnd_);
+  CheckHR(hr);
+
+  hr = url_launch_handler_.Initialize();
   CheckHR(hr, "Failed to initialize url launch handler.");
   // Register for size notifications.
   hr = window_->add_SizeChanged(mswr::Callback<SizeChangedHandler>(
@@ -920,11 +926,6 @@ HRESULT ChromeAppView::OnActivate(winapp::Core::ICoreApplicationView*,
     return S_OK;
   }
 
-  globals.core_window =
-      winrt_utils::FindCoreWindow(globals.main_thread_id, 10);
-
-  DVLOG(1) << "CoreWindow found: " << std::hex << globals.core_window;
-
   if (!globals.host_thread) {
     DWORD chrome_ui_thread_id = 0;
     globals.host_thread =
@@ -937,7 +938,7 @@ HRESULT ChromeAppView::OnActivate(winapp::Core::ICoreApplicationView*,
     }
   }
 
-  if (RegisterHotKey(globals.core_window, kFlipWindowsHotKeyId,
+  if (RegisterHotKey(core_window_hwnd_, kFlipWindowsHotKeyId,
                      MOD_CONTROL, VK_F12)) {
     DVLOG(1) << "Registered flip window hotkey.";
   } else {
diff --git a/win8/metro_driver/chrome_app_view.h b/win8/metro_driver/chrome_app_view.h
index 8c08176..ced5cca 100644
--- a/win8/metro_driver/chrome_app_view.h
+++ b/win8/metro_driver/chrome_app_view.h
@@ -74,6 +74,8 @@ class ChromeAppView
   // Returns the current view state of the chrome window.
   winui::ViewManagement::ApplicationViewState GetViewState();
 
+  HWND core_window_hwnd() { return core_window_hwnd_; }
+
  private:
   HRESULT OnActivate(winapp::Core::ICoreApplicationView* view,
                      winapp::Activation::IActivatedEventArgs* args);
@@ -115,6 +117,9 @@ class ChromeAppView
   EventRegistrationToken input_pane_hiding_token_;
   EventRegistrationToken app_exit_token_;
 
+  // The actual window behind the view surface.
+  HWND core_window_hwnd_;
+
   ChromeUrlLaunchHandler url_launch_handler_;
   metro_driver::DevicesHandler devices_handler_;
   SettingsHandler settings_handler_;
@@ -143,13 +148,11 @@ class ChromeAppView
 struct Globals {
   LPTHREAD_START_ROUTINE host_main;
   void* host_context;
-  HWND core_window;
   // The pair below contains the HWND and a bool which indicates whether the
   // window was displaced to ensure that the focused region is visible when
   // the OSK is displayed.
   std::list<std::pair<HWND, bool> > host_windows;
   HANDLE host_thread;
-  DWORD main_thread_id;
   ChromeAppView* view;
   WNDPROC g_core_proc;
   string16 navigation_url;
diff --git a/win8/metro_driver/winrt_utils.cc b/win8/metro_driver/winrt_utils.cc
index e956c47..be348dc 100644
--- a/win8/metro_driver/winrt_utils.cc
+++ b/win8/metro_driver/winrt_utils.cc
@@ -71,19 +71,6 @@ HRESULT Create ## Name ## Property(Type value, \
     *result = 0; \
   hr = S_OK
 
-
-BOOL CALLBACK CoreWindowFinder(HWND hwnd, LPARAM param) {
-  HWND* window = reinterpret_cast<HWND*>(param);
-  char classname[128];
-  if (::GetClassNameA(hwnd, classname, ARRAYSIZE(classname))) {
-    if (lstrcmpiA("Windows.UI.Core.CoreWindow", classname) == 0) {
-      *window = hwnd;
-      return FALSE;
-    }
-  }
-  return TRUE;
-}
-
 }  // namespace
 
 namespace winrt_utils {
@@ -236,13 +223,4 @@ string16 ReadArgumentsFromPinnedTaskbarShortcut() {
   return L"";
 }
 
-HWND FindCoreWindow(DWORD thread_id, int wait_ms) {
-  HWND window = NULL;
-    do {
-    ::Sleep(wait_ms);
-    ::EnumThreadWindows(thread_id, &CoreWindowFinder, LPARAM(&window));
-  } while (window == NULL);
-  return window;
-}
-
 }  // namespace winrt_utils
diff --git a/win8/metro_driver/winrt_utils.h b/win8/metro_driver/winrt_utils.h
index 1ad0a05..c3be1b1 100644
--- a/win8/metro_driver/winrt_utils.h
+++ b/win8/metro_driver/winrt_utils.h
@@ -55,10 +55,6 @@ HRESULT CompareProperties(
 // empty string on failure.
 string16 ReadArgumentsFromPinnedTaskbarShortcut();
 
-// Looks for a Window with the right class name that belongs to |thread_id|
-// thread. It loops forever looking for it, waiting |wait_ms| between loops.
-HWND FindCoreWindow(DWORD thread_id, int wait_ms);
-
 }  // namespace winrt_utils
 
 #endif  // WIN8_METRO_DRIVER_WINRT_UTILS_H_