linux desktop aura: Get tab dragging working.

ui/views/widget/desktop_root_window_host_linux.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 "ui/views/widget/desktop_root_window_host_linux.h"
 
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
@@ skipping 10 matching lines @@
 #include "ui/aura/shared/input_method_event_filter.h"
 #include "ui/aura/window_property.h"
 #include "ui/base/touch/touch_factory.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/views/ime/input_method_bridge.h"
 #include "ui/views/widget/desktop_capture_client.h"
 #include "ui/views/widget/desktop_layout_manager.h"
 #include "ui/views/widget/desktop_native_widget_aura.h"
 #include "ui/views/widget/desktop_screen_position_client.h"
 #include "ui/views/widget/x11_desktop_handler.h"
+#include "ui/views/widget/x11_desktop_window_move_client.h"
 #include "ui/views/widget/x11_window_event_filter.h"
 
 namespace views {
 
 DEFINE_WINDOW_PROPERTY_KEY(
     aura::Window*, kViewsWindowForRootWindow, NULL);
 
 namespace {
 
 // Standard Linux mouse buttons for going back and forward.
@@ skipping 175 matching lines @@
   input_method_filter_.reset(new aura::shared::InputMethodEventFilter());
   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window_);
   root_window_event_filter_->AddFilter(input_method_filter_.get());
 
   // TODO(erg): Unify this code once the other consumer goes away.
   x11_window_event_filter_.reset(
       new X11WindowEventFilter(root_window_, activation_client));
   x11_window_event_filter_->SetUseHostWindowBorders(false);
   root_window_event_filter_->AddFilter(x11_window_event_filter_.get());
 
+  x11_window_move_client_.reset(new X11DesktopWindowMoveClient);
+  root_window_event_filter_->AddFilter(x11_window_move_client_.get());
+  aura::client::SetWindowMoveClient(root_window_,
+                                    x11_window_move_client_.get());
+
   return root_window_;
 }
 
 bool DesktopRootWindowHostLinux::IsWindowManagerPresent() {
   // Per ICCCM 2.8, "Manager Selections", window managers should take ownership
   // of WM_Sn selections (where n is a screen number).
   return XGetSelectionOwner(
       xdisplay_, atom_cache_.GetAtom("WM_S0")) != None;
 }
 
@@ skipping 57 matching lines @@
     MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(&DesktopRootWindowHostLinux::CloseNow,
                    close_widget_factory_.GetWeakPtr()));
   }
 }
 
 void DesktopRootWindowHostLinux::CloseNow() {
   // Remove the event listeners we've installed. We need to remove these
   // because otherwise we get assert during ~RootWindow().
+  root_window_event_filter_->RemoveFilter(x11_window_move_client_.get());
   root_window_event_filter_->RemoveFilter(x11_window_event_filter_.get());
   root_window_event_filter_->RemoveFilter(input_method_filter_.get());
 
   // Actually free our native resources.
   base::MessagePumpAuraX11::Current()->RemoveDispatcherForWindow(xwindow_);
   XDestroyWindow(xdisplay_, xwindow_);
   xwindow_ = None;
 
   desktop_native_widget_aura_->OnHostClosed();
 }
@@ skipping 180 matching lines @@
   // of focus changes into views.
   if (content_window_ && content_window_->GetFocusManager() &&
       content_window_->Contains(
           content_window_->GetFocusManager()->GetFocusedWindow())) {
     content_window_->GetFocusManager()->SetFocusedWindow(content_window_, NULL);
   }
 }
 
 Widget::MoveLoopResult DesktopRootWindowHostLinux::RunMoveLoop(
     const gfx::Point& drag_offset) {
-  // TODO(erg):
-  NOTIMPLEMENTED();
+  SetCapture();
+
+  if (x11_window_move_client_->RunMoveLoop(content_window_, drag_offset) ==
+      aura::client::MOVE_SUCCESSFUL)
+    return Widget::MOVE_LOOP_SUCCESSFUL;
+
   return Widget::MOVE_LOOP_CANCELED;
 }
 
 void DesktopRootWindowHostLinux::EndMoveLoop() {
-  // TODO(erg):
-  NOTIMPLEMENTED();
+  x11_window_move_client_->EndMoveLoop();
 }
 
 void DesktopRootWindowHostLinux::SetVisibilityChangedAnimationsEnabled(
     bool value) {
   // TODO(erg):
   NOTIMPLEMENTED();
 }
 
 bool DesktopRootWindowHostLinux::ShouldUseNativeFrame() {
   return false;
@@ skipping 528 matching lines @@
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
     const gfx::Rect& initial_bounds) {
   return new DesktopRootWindowHostLinux(native_widget_delegate,
                                         desktop_native_widget_aura,
                                         initial_bounds);
 }
 
 }  // namespace views