Desktop Aura: Allow tab drags out of window.

base/message_pump_aurax11.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_pump_aurax11.h"
 
 #include <glib.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/XKBlib.h>
 
@@ skipping 121 matching lines @@
   return InitializeXInput2();
 }
 
 // static
 void MessagePumpAuraX11::SetDefaultDispatcher(
     MessagePumpDispatcher* dispatcher) {
   DCHECK(!g_default_dispatcher || !dispatcher);
   g_default_dispatcher = dispatcher;
 }
 
+// static
+MessagePumpAuraX11* MessagePumpAuraX11::Current() {
+  MessageLoopForUI* loop = MessageLoopForUI::current();
+  return static_cast<MessagePumpAuraX11*>(loop->pump_ui());
+}
+
 bool MessagePumpAuraX11::DispatchXEvents() {
   Display* display = GetDefaultXDisplay();
   DCHECK(display);
   MessagePumpDispatcher* dispatcher =
       GetDispatcher() ? GetDispatcher() : g_default_dispatcher;
 
   // In the general case, we want to handle all pending events before running
   // the tasks. This is what happens in the message_pump_glib case.
   while (XPending(display)) {
     XEvent xev;
     XNextEvent(display, &xev);
     if (dispatcher && ProcessXEvent(dispatcher, &xev))
       return TRUE;
   }
   return TRUE;
 }
 
+void MessagePumpAuraX11::BlockUntilWindowMapped(unsigned long window) {
+  XEvent event;
+
+  Display* display = GetDefaultXDisplay();
+  DCHECK(display);
+
+  MessagePumpDispatcher* dispatcher =
+      GetDispatcher() ? GetDispatcher() : g_default_dispatcher;
+
+  do {
+    // Block until there's a message of |event_mask| type on |w|. Then remove
+    // it from the queue and stuff it in |event|.
+    XWindowEvent(display, window, StructureNotifyMask, &event);
+    ProcessXEvent(dispatcher, &event);
+  } while (event.type != MapNotify);
+}
+
 MessagePumpAuraX11::~MessagePumpAuraX11() {
   g_source_destroy(x_source_);
   g_source_unref(x_source_);
   XCloseDisplay(g_xdisplay);
   g_xdisplay = NULL;
 }
 
 void MessagePumpAuraX11::InitXSource() {
   // CHECKs are to help track down crbug.com/113106.
   CHECK(!x_source_);
@@ skipping 46 matching lines @@
       return true;
   }
   return false;
 }
 
 void MessagePumpAuraX11::DidProcessXEvent(XEvent* xevent) {
   FOR_EACH_OBSERVER(MessagePumpObserver, observers(), DidProcessEvent(xevent));
 }
 
 }  // namespace base