aura-mus: Implement Deactivate().

ui/aura/mus/window_tree_client.cc

 // Copyright 2014 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/aura/mus/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 1448 matching lines @@
 
 void WindowTreeClient::WmCancelMoveLoop(uint32_t change_id) {
   if (!window_manager_delegate_ || change_id != current_wm_move_loop_change_)
     return;
 
   WindowMus* window = GetWindowByServerId(current_wm_move_loop_window_id_);
   if (window)
     window_manager_delegate_->OnWmCancelMoveLoop(window->GetWindow());
 }
 
+void WindowTreeClient::WmDeactivateWindow(Id window_id) {
+  if (!window_manager_delegate_)
+    return;
+
+  WindowMus* window = GetWindowByServerId(window_id);
+  if (!window) {
+    DVLOG(1) << "Attempt to deactivate invalid window " << window_id;
+    return;
+  }
+
+  window_manager_delegate_->OnWmDeactivateWindow(window->GetWindow());

[sky, 2017/01/12 00:55:39]

It seems like this should early out if window isn't contained in the active
window. Is there a reason not to do that?

[Elliot Glaysher, 2017/01/12 23:20:37]

Hoisted the early out check from inside OnWmDeactivateWindow() to this method by
exposing an IsWindowActive() check.

+}
+
 void WindowTreeClient::OnAccelerator(uint32_t ack_id,
                                      uint32_t accelerator_id,
                                      std::unique_ptr<ui::Event> event) {
   DCHECK(event);
   const ui::mojom::EventResult result =
       window_manager_delegate_->OnAccelerator(accelerator_id, *event.get());
   if (ack_id && window_manager_internal_client_)
     window_manager_internal_client_->OnAcceleratorAck(ack_id, result);
 }
 
@@ skipping 100 matching lines @@
   base::Optional<gfx::Rect> out_rect = base::nullopt;
   if (mask_rect) {
     out_rect = gfx::ConvertRectToPixel(ScaleFactorForDisplay(window),
                                        mask_rect.value());
   }
 
   tree_->SetHitTestMask(WindowMus::Get(window_tree_host->window())->server_id(),
                         out_rect);
 }
 
+void WindowTreeClient::OnWindowTreeHostDeactivateWindow(
+    WindowTreeHostMus* window_tree_host) {
+  tree_->DeactivateWindow(
+      WindowMus::Get(window_tree_host->window())->server_id());
+}
+
 std::unique_ptr<WindowPortMus> WindowTreeClient::CreateWindowPortForTopLevel(
     const std::map<std::string, std::vector<uint8_t>>* properties) {
   std::unique_ptr<WindowPortMus> window_port =
       base::MakeUnique<WindowPortMus>(this, WindowMusType::TOP_LEVEL);
   roots_.insert(window_port.get());
 
   window_port->set_server_id(MakeTransportId(client_id_, next_window_id_++));
   RegisterWindowMus(window_port.get());
 
   std::unordered_map<std::string, std::vector<uint8_t>> transport_properties;
@@ skipping 94 matching lines @@
   return ScheduleInFlightChange(base::MakeUnique<InFlightCaptureChange>(
       this, capture_synchronizer_.get(), window));
 }
 
 uint32_t WindowTreeClient::CreateChangeIdForFocus(WindowMus* window) {
   return ScheduleInFlightChange(base::MakeUnique<InFlightFocusChange>(
       this, focus_synchronizer_.get(), window));
 }
 
 }  // namespace aura