Fix delivery of focus/blur events (issue #1301).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1717 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/capi/cef_browser_capi.h

@@ -235,10 +235,16 @@ typedef struct _cef_browser_host_t {
       int force_close);
 
   ///
-  // Set focus for the browser window. If |enable| is true (1) focus will be set
-  // to the window. Otherwise, focus will be removed.
+  // Set whether the browser is focused.
   ///
-  void (CEF_CALLBACK *set_focus)(struct _cef_browser_host_t* self, int enable);
+  void (CEF_CALLBACK *set_focus)(struct _cef_browser_host_t* self, int focus);
+
+  ///
+  // Set whether the window containing the browser is visible
+  // (minimized/unminimized, app hidden/unhidden, etc). Only used on Mac OS X.
+  ///
+  void (CEF_CALLBACK *set_window_visibility)(struct _cef_browser_host_t* self,
+      int visible);
 
   ///
   // Retrieve the window handle for this browser.

include/cef_browser.h

@@ -271,11 +271,17 @@ class CefBrowserHost : public virtual CefBase {
   virtual void CloseBrowser(bool force_close) =0;
 
   ///
-  // Set focus for the browser window. If |enable| is true focus will be set to
-  // the window. Otherwise, focus will be removed.
+  // Set whether the browser is focused.
   ///
   /*--cef()--*/
-  virtual void SetFocus(bool enable) =0;
+  virtual void SetFocus(bool focus) =0;
+
+  ///
+  // Set whether the window containing the browser is visible
+  // (minimized/unminimized, app hidden/unhidden, etc). Only used on Mac OS X.
+  ///
+  /*--cef()--*/
+  virtual void SetWindowVisibility(bool visible) =0;
 
   ///
   // Retrieve the window handle for this browser.

libcef/browser/browser_host_impl.cc

@@ -632,11 +632,29 @@ void CefBrowserHostImpl::CloseBrowser(bool force_close) {
   }
 }
 
-void CefBrowserHostImpl::SetFocus(bool enable) {
-  if (!enable)
-    return;
+void CefBrowserHostImpl::SetFocus(bool focus) {
+  if (focus) {
+    OnSetFocus(FOCUS_SOURCE_SYSTEM);
+  } else {
+    if (CEF_CURRENTLY_ON_UIT()) {
+      PlatformSetFocus(false);
+    } else {
+      CEF_POST_TASK(CEF_UIT,
+          base::Bind(&CefBrowserHostImpl::PlatformSetFocus, this, false));
+    }
+  }
+}
 
-  OnSetFocus(FOCUS_SOURCE_SYSTEM);
+void CefBrowserHostImpl::SetWindowVisibility(bool visible) {
+#if defined(OS_MACOSX)
+  if (CEF_CURRENTLY_ON_UIT()) {
+    PlatformSetWindowVisibility(visible);
+  } else {
+    CEF_POST_TASK(CEF_UIT,
+        base::Bind(&CefBrowserHostImpl::PlatformSetWindowVisibility,
+                   this, visible));
+  }
+#endif
 }
 
 CefWindowHandle CefBrowserHostImpl::GetWindowHandle() {
@@ -1499,15 +1517,7 @@ void CefBrowserHostImpl::OnSetFocus(cef_focus_source_t source) {
       }
     }
 
-    if (web_contents_.get())
-      web_contents_->Focus();
-
-#if defined(OS_WIN)
-    // When windowed rendering is used in combination with Aura on Windows we
-    // need to explicitly set focus to the native window handle. Otherwise,
-    // the window doesn't get keyboard focus.
-    PlatformSetViewFocus();
-#endif  // defined(OS_WIN)
+    PlatformSetFocus(true);
   } else {
     CEF_POST_TASK(CEF_UIT,
         base::Bind(&CefBrowserHostImpl::OnSetFocus, this, source));

libcef/browser/browser_host_impl.h

@@ -127,7 +127,8 @@ class CefBrowserHostImpl : public CefBrowserHost,
   // CefBrowserHost methods.
   virtual CefRefPtr<CefBrowser> GetBrowser() OVERRIDE;
   virtual void CloseBrowser(bool force_close) OVERRIDE;
-  virtual void SetFocus(bool enable) OVERRIDE;
+  virtual void SetFocus(bool focus) OVERRIDE;
+  virtual void SetWindowVisibility(bool visible) OVERRIDE;
   virtual CefWindowHandle GetWindowHandle() OVERRIDE;
   virtual CefWindowHandle GetOpenerWindowHandle() OVERRIDE;
   virtual CefRefPtr<CefClient> GetClient() OVERRIDE;
@@ -443,8 +444,6 @@ class CefBrowserHostImpl : public CefBrowserHost,
   static LPCTSTR GetWndClass();
   static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                                   WPARAM wParam, LPARAM lParam);
-
-  void PlatformSetViewFocus();
 #endif
 
   // Create the window.
@@ -454,6 +453,12 @@ class CefBrowserHostImpl : public CefBrowserHost,
   void PlatformCloseWindow();
   // Resize the window to the given dimensions.
   void PlatformSizeTo(int width, int height);
+  // Set or remove focus from the window.
+  void PlatformSetFocus(bool focus);
+#if defined(OS_MACOSX)
+  // Set or remove window visibility.
+  void PlatformSetWindowVisibility(bool visible);
+#endif
   // Return the handle for this window.
   CefWindowHandle PlatformGetWindowHandle();
   // Open the specified text in the default text editor.

libcef/browser/browser_host_impl_linux.cc

@@ -100,6 +100,24 @@ void CefBrowserHostImpl::PlatformSizeTo(int width, int height) {
   }
 }
 
+void CefBrowserHostImpl::PlatformSetFocus(bool focus) {
+  if (!focus)
+    return;
+
+  if (web_contents_) {
+    // Give logical focus to the RenderWidgetHostViewAura in the views
+    // hierarchy. This does not change the native keyboard focus.
+    web_contents_->Focus();
+  }
+
+  if (window_x11_) {
+    // Give native focus to the DesktopNativeWidgetAura for the root window.
+    // Needs to be done via the ::Window so that keyboard focus is assigned
+    // correctly.
+    window_x11_->Focus();
+  }
+}
+
 CefWindowHandle CefBrowserHostImpl::PlatformGetWindowHandle() {
   return window_info_.window;
 }

libcef/browser/browser_host_impl_mac.mm

@@ -18,6 +18,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/native_web_keyboard_event.h"
+#include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/file_chooser_params.h"
 #include "grit/ui_strings.h"
@@ -34,7 +35,6 @@
 @interface CefBrowserHostView : NSView {
  @private
   CefBrowserHostImpl* browser_;  // weak
-  bool is_in_onsetfocus_;
 }
 
 @property (nonatomic, assign) CefBrowserHostImpl* browser;
@@ -55,23 +55,6 @@
   [super dealloc];
 }
 
-- (BOOL)acceptsFirstResponder {
-  return browser_ && browser_->GetWebContents();
-}
-
-- (BOOL)becomeFirstResponder {
-  if (browser_ && browser_->GetWebContents()) {
-    // Avoid re-entering OnSetFocus.
-    if (!is_in_onsetfocus_) {
-      is_in_onsetfocus_ = true;
-      browser_->OnSetFocus(FOCUS_SOURCE_SYSTEM);
-      is_in_onsetfocus_ = false;
-    }
-  }
-
-  return YES;
-}
-
 @end
 
 // Receives notifications from the browser window. Will delete itself when done.
@@ -88,6 +71,48 @@
 
 @synthesize browser = browser_;
 
+// Called when we are activated (when we gain focus).
+- (void)windowDidBecomeKey:(NSNotification*)notification {
+  if (browser_)
+    browser_->SetFocus(true);
+}
+
+// Called when we are deactivated (when we lose focus).
+- (void)windowDidResignKey:(NSNotification*)notification {
+  if (browser_)
+    browser_->SetFocus(false);
+}
+
+// Called when we have been minimized.
+- (void)windowDidMiniaturize:(NSNotification *)notification {
+  if (browser_)
+    browser_->SetWindowVisibility(false);
+}
+
+// Called when we have been unminimized.
+- (void)windowDidDeminiaturize:(NSNotification *)notification {
+  if (browser_)
+    browser_->SetWindowVisibility(true);
+}
+
+// Called when the application has been hidden.
+- (void)applicationDidHide:(NSNotification *)notification {
+  // If the window is miniaturized then nothing has really changed.
+  if (![[notification object] isMiniaturized]) {
+    if (browser_)
+      browser_->SetWindowVisibility(false);
+  }
+}
+
+// Called when the application has been unhidden.
+- (void)applicationDidUnhide:(NSNotification *)notification {
+  // If the window is miniaturized then nothing has really changed.
+  if (![[notification object] isMiniaturized]) {
+    if (browser_)
+      browser_->SetWindowVisibility(true);
+  }
+}
+
 - (BOOL)windowShouldClose:(id)window {
   // Protect against multiple requests to close while the close is pending.
   if (browser_ && browser_->destruction_state() <=
@@ -345,6 +370,31 @@ void CefBrowserHostImpl::PlatformSizeTo(int width, int height) {
   // Not needed; subviews are bound.
 }
 
+void CefBrowserHostImpl::PlatformSetFocus(bool focus) {
+  if (web_contents_) {
+    if (content::RenderWidgetHostView* view =
+        web_contents_->GetRenderWidgetHostView()) {
+      view->SetActive(focus);
+
+      if (focus) {
+        // Give keyboard focus to the native view.
+        NSView* view = web_contents_->GetContentNativeView();
+        DCHECK([view canBecomeKeyView]);
+        [[view window] makeFirstResponder:view];
+      }
+    }
+  }
+}
+
+void CefBrowserHostImpl::PlatformSetWindowVisibility(bool visible) {
+  if (web_contents_) {
+    if (content::RenderWidgetHostView* view =
+        web_contents_->GetRenderWidgetHostView()) {
+      view->SetWindowVisibility(visible);
+    }
+  }
+}
+
 CefWindowHandle CefBrowserHostImpl::PlatformGetWindowHandle() {
   return window_info_.view;
 }

libcef/browser/browser_host_impl_win.cc

@@ -601,7 +601,7 @@ LRESULT CALLBACK CefBrowserHostImpl::WndProc(HWND hwnd, UINT message,
 
   case WM_SETFOCUS:
     if (browser)
-      browser->OnSetFocus(FOCUS_SOURCE_SYSTEM);
+      browser->SetFocus(true);
     return 0;
 
   case WM_ERASEBKGND:
@@ -611,11 +611,6 @@ LRESULT CALLBACK CefBrowserHostImpl::WndProc(HWND hwnd, UINT message,
   return DefWindowProc(hwnd, message, wParam, lParam);
 }
 
-void CefBrowserHostImpl::PlatformSetViewFocus() {
-  if (window_widget_)
-    ::SetFocus(views::HWNDForWidget(window_widget_));
-}
-
 ui::PlatformCursor CefBrowserHostImpl::GetPlatformCursor(
     blink::WebCursorInfo::Type type) {
   HMODULE module_handle = NULL;
@@ -701,6 +696,25 @@ void CefBrowserHostImpl::PlatformSizeTo(int width, int height) {
                rect.bottom, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
 }
 
+void CefBrowserHostImpl::PlatformSetFocus(bool focus) {
+  if (!focus)
+    return;
+
+  if (web_contents_) {
+    // Give logical focus to the RenderWidgetHostViewAura in the views
+    // hierarchy. This does not change the native keyboard focus.
+    web_contents_->Focus();
+  }
+
+  if (window_widget_) {
+    // Give native focus to the DesktopNativeWidgetAura for the root window.
+    // Needs to be done via the HWND so that keyboard focus is assigned
+    // correctly. DesktopNativeWidgetAura will update focus state on the
+    // aura::Window when WM_SETFOCUS and WM_KILLFOCUS are received.
+    ::SetFocus(HWNDForWidget(window_widget_));
+  }
+}
+
 CefWindowHandle CefBrowserHostImpl::PlatformGetWindowHandle() {
   return window_info_.window;
 }

libcef/browser/window_x11.cc

@@ -10,6 +10,7 @@
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
+#include "ui/base/x/x11_util.h"
 #include "ui/events/platform/x11/x11_event_source.h"
 
 namespace {
@@ -58,7 +59,9 @@ CefWindowX11::CefWindowX11(CefRefPtr<CefBrowserHostImpl> browser,
     xwindow_(0),
     window_mapped_(false),
     bounds_(bounds),
-    atom_cache_(xdisplay_, kAtomsToCache) {
+    focus_pending_(false),
+    atom_cache_(xdisplay_, kAtomsToCache),
+    weak_ptr_factory_(this) {
   if (parent_xwindow_ == None)
     parent_xwindow_ = DefaultRootWindow(xdisplay_);
 
@@ -166,6 +169,17 @@ void CefWindowX11::Hide() {
   }
 }
 
+void CefWindowX11::Focus() {
+  if (xwindow_ == None || !window_mapped_)
+    return;
+
+  ::Window child = FindChild(xdisplay_, xwindow_);
+  if (child && ui::IsWindowVisible(child)) {
+    // Give focus to the child DesktopWindowTreeHostX11.
+    XSetInputFocus(xdisplay_, child, RevertToParent, CurrentTime);
+  }
+}
+
 void CefWindowX11::SetBounds(const gfx::Rect& bounds) {
   if (xwindow_ == None)
     return;
@@ -274,13 +288,31 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
       // "_NET_ACTIVE_WINDOW" message it will erroneously mark the WebView
       // (hosted in a DesktopWindowTreeHostX11) as unfocused. Use a delayed
       // task here to restore the WebView's focus state.
-      CEF_POST_DELAYED_TASK(CEF_UIT,
-          base::Bind(&CefBrowserHostImpl::OnSetFocus, browser_,
-                     FOCUS_SOURCE_SYSTEM),
-          100);
+      if (!focus_pending_) {
+        focus_pending_ = true;
+        CEF_POST_DELAYED_TASK(CEF_UIT,
+            base::Bind(&CefWindowX11::ContinueFocus,
+                       weak_ptr_factory_.GetWeakPtr()),
+            100);
+      }
+      break;
+    case FocusOut:
+      // Cancel the pending focus change if some other window has gained focus
+      // while waiting for the async task to run. Otherwise we can get stuck in
+      // a focus change loop.
+      if (focus_pending_)
+        focus_pending_ = false;
       break;
   }
 
   return ui::POST_DISPATCH_STOP_PROPAGATION;
 }
 
+void CefWindowX11::ContinueFocus() {
+  if (!focus_pending_)
+    return;
+  browser_->SetFocus(true);
+  focus_pending_ = false;
+}
+
+

libcef/browser/window_x11.h

@@ -11,6 +11,7 @@
 
 #include "libcef/browser/browser_host_impl.h"
 
+#include "base/memory/weak_ptr.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
@@ -29,6 +30,8 @@ class CefWindowX11 : public ui::PlatformEventDispatcher {
   void Show();
   void Hide();
 
+  void Focus();
+
   void SetBounds(const gfx::Rect& bounds);
 
   gfx::Rect GetBoundsInScreen();
@@ -41,6 +44,8 @@ class CefWindowX11 : public ui::PlatformEventDispatcher {
   gfx::Rect bounds() const { return bounds_; }
 
  private:
+  void ContinueFocus();
+
   CefRefPtr<CefBrowserHostImpl> browser_;
 
   // The display and the native X window hosting the root window.
@@ -54,8 +59,13 @@ class CefWindowX11 : public ui::PlatformEventDispatcher {
   // The bounds of |xwindow_|.
   gfx::Rect bounds_;
 
+  bool focus_pending_;
+
   ui::X11AtomCache atom_cache_;
 
+  // Must always be the last member.
+  base::WeakPtrFactory<CefWindowX11> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(CefWindowX11);
 };
 

libcef_dll/cpptoc/browser_host_cpptoc.cc

@@ -126,7 +126,7 @@ void CEF_CALLBACK browser_host_close_browser(struct _cef_browser_host_t* self,
 }
 
 void CEF_CALLBACK browser_host_set_focus(struct _cef_browser_host_t* self,
-    int enable) {
+    int focus) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
   DCHECK(self);
@@ -135,7 +135,20 @@ void CEF_CALLBACK browser_host_set_focus(struct _cef_browser_host_t* self,
 
   // Execute
   CefBrowserHostCppToC::Get(self)->SetFocus(
-      enable?true:false);
+      focus?true:false);
+}
+
+void CEF_CALLBACK browser_host_set_window_visibility(
+    struct _cef_browser_host_t* self, int visible) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return;
+
+  // Execute
+  CefBrowserHostCppToC::Get(self)->SetWindowVisibility(
+      visible?true:false);
 }
 
 cef_window_handle_t CEF_CALLBACK browser_host_get_window_handle(
@@ -527,6 +540,7 @@ CefBrowserHostCppToC::CefBrowserHostCppToC(CefBrowserHost* cls)
   struct_.struct_.get_browser = browser_host_get_browser;
   struct_.struct_.close_browser = browser_host_close_browser;
   struct_.struct_.set_focus = browser_host_set_focus;
+  struct_.struct_.set_window_visibility = browser_host_set_window_visibility;
   struct_.struct_.get_window_handle = browser_host_get_window_handle;
   struct_.struct_.get_opener_window_handle =
       browser_host_get_opener_window_handle;

libcef_dll/ctocpp/browser_host_ctocpp.cc

@@ -87,7 +87,7 @@ void CefBrowserHostCToCpp::CloseBrowser(bool force_close) {
       force_close);
 }
 
-void CefBrowserHostCToCpp::SetFocus(bool enable) {
+void CefBrowserHostCToCpp::SetFocus(bool focus) {
   if (CEF_MEMBER_MISSING(struct_, set_focus))
     return;
 
@@ -95,7 +95,18 @@ void CefBrowserHostCToCpp::SetFocus(bool enable) {
 
   // Execute
   struct_->set_focus(struct_,
-      enable);
+      focus);
+}
+
+void CefBrowserHostCToCpp::SetWindowVisibility(bool visible) {
+  if (CEF_MEMBER_MISSING(struct_, set_window_visibility))
+    return;
+
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  struct_->set_window_visibility(struct_,
+      visible);
 }
 
 CefWindowHandle CefBrowserHostCToCpp::GetWindowHandle() {

libcef_dll/ctocpp/browser_host_ctocpp.h

@@ -39,7 +39,8 @@ class CefBrowserHostCToCpp
   // CefBrowserHost methods
   virtual CefRefPtr<CefBrowser> GetBrowser() OVERRIDE;
   virtual void CloseBrowser(bool force_close) OVERRIDE;
-  virtual void SetFocus(bool enable) OVERRIDE;
+  virtual void SetFocus(bool focus) OVERRIDE;
+  virtual void SetWindowVisibility(bool visible) OVERRIDE;
   virtual CefWindowHandle GetWindowHandle() OVERRIDE;
   virtual CefWindowHandle GetOpenerWindowHandle() OVERRIDE;
   virtual CefRefPtr<CefClient> GetClient() OVERRIDE;

patch/patches/views_widget_180.patch

@@ -26,6 +26,22 @@ Index: desktop_aura/desktop_window_tree_host_win.cc
      parent_hwnd = params.parent->GetHost()->GetAcceleratedWidget();
  
    message_handler_->set_remove_standard_frame(params.remove_standard_frame);
+@@ -775,6 +777,7 @@
+ 
+ void DesktopWindowTreeHostWin::HandleNativeFocus(HWND last_focused_window) {
+   // TODO(beng): inform the native_widget_delegate_.
++  GetWidget()->GetNativeWindow()->Focus();
+   InputMethod* input_method = GetInputMethod();
+   if (input_method)
+     input_method->OnFocus();
+@@ -782,6 +785,7 @@
+ 
+ void DesktopWindowTreeHostWin::HandleNativeBlur(HWND focused_window) {
+   // TODO(beng): inform the native_widget_delegate_.
++  GetWidget()->GetNativeWindow()->Blur();
+   InputMethod* input_method = GetInputMethod();
+   if (input_method)
+     input_method->OnBlur();
 Index: desktop_aura/desktop_window_tree_host_x11.cc
 ===================================================================
 --- desktop_aura/desktop_window_tree_host_x11.cc	(revision 272007)

tests/cefclient/cefclient_gtk.cpp

@@ -94,9 +94,7 @@ gboolean WindowFocusIn(GtkWidget* widget,
     CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
     if (browser) {
       // Give focus to the browser window.
-      ::Display* xdisplay = cef_get_xdisplay();
-      ::Window xwindow = browser->GetHost()->GetWindowHandle();
-      XSetInputFocus(xdisplay, xwindow, RevertToParent, CurrentTime);
+      browser->GetHost()->SetFocus(true);
       return TRUE;
     }
   }

tests/cefclient/cefclient_mac.mm

@@ -202,10 +202,63 @@ const int kWindowHeight = 600;
   [self alert:@"File Download" withMessage:str];
 }
 
+// Called when we are activated (when we gain focus).
 - (void)windowDidBecomeKey:(NSNotification*)notification {
-  if (g_handler.get() && g_handler->GetBrowserId()) {
-    // Give focus to the browser window.
-    g_handler->GetBrowser()->GetHost()->SetFocus(true);
+  if (g_handler.get()) {
+    CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+    if (browser.get())
+      browser->GetHost()->SetFocus(true);
+  }
+}
+
+// Called when we are deactivated (when we lose focus).
+- (void)windowDidResignKey:(NSNotification*)notification {
+  if (g_handler.get()) {
+    CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+    if (browser.get())
+      browser->GetHost()->SetFocus(false);
+  }
+}
+
+// Called when we have been minimized.
+- (void)windowDidMiniaturize:(NSNotification *)notification {
+  if (g_handler.get()) {
+    CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+    if (browser.get())
+      browser->GetHost()->SetWindowVisibility(false);
+  }
+}
+
+// Called when we have been unminimized.
+- (void)windowDidDeminiaturize:(NSNotification *)notification {
+  if (g_handler.get()) {
+    CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+    if (browser.get())
+      browser->GetHost()->SetWindowVisibility(true);
+  }
+}
+
+// Called when the application has been hidden.
+- (void)applicationDidHide:(NSNotification *)notification {
+  // If the window is miniaturized then nothing has really changed.
+  if (![[notification object] isMiniaturized]) {
+    if (g_handler.get()) {
+      CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+      if (browser.get())
+        browser->GetHost()->SetWindowVisibility(false);
+    }
+  }
+}
+
+// Called when the application has been unhidden.
+- (void)applicationDidUnhide:(NSNotification *)notification {
+  // If the window is miniaturized then nothing has really changed.
+  if (![[notification object] isMiniaturized]) {
+    if (g_handler.get()) {
+      CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
+      if (browser.get())
+        browser->GetHost()->SetWindowVisibility(true);
+    }
   }
 }
 

tests/cefclient/cefclient_win.cpp

@@ -517,11 +517,8 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
 
     case WM_SETFOCUS:
       if (g_handler.get() && g_handler->GetBrowser()) {
-        // Pass focus to the browser window
-        CefWindowHandle hwnd =
-            g_handler->GetBrowser()->GetHost()->GetWindowHandle();
-        if (hwnd)
-          PostMessage(hwnd, WM_SETFOCUS, wParam, NULL);
+        // Give focus to the browser.
+        g_handler->GetBrowser()->GetHost()->SetFocus(true);
       }
       return 0;
 

tests/cefclient/client_handler.cpp

@@ -306,6 +306,12 @@ void ClientHandler::OnAfterCreated(CefRefPtr<CefBrowser> browser) {
   } else if (browser->IsPopup()) {
     // Add to the list of popup browsers.
     m_PopupBrowsers.push_back(browser);
+
+    // Give focus to the popup browser. Perform asynchronously because the
+    // parent window may attempt to keep focus after launching the popup.
+    CefPostTask(TID_UI,
+        NewCefRunnableMethod(browser->GetHost().get(),
+                             &CefBrowserHost::SetFocus, true));
   }
 
   m_BrowserCount++;