Converts DockedWindowLayoutManager to use WmRootWindowControllerObserver

ash/wm/aura/wm_root_window_controller_aura.cc

 // Copyright 2016 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 "ash/wm/aura/wm_root_window_controller_aura.h"
 
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/wm/aura/wm_globals_aura.h"
 #include "ash/wm/aura/wm_window_aura.h"
+#include "ash/wm/common/wm_root_window_controller_observer.h"
 #include "ash/wm/workspace_controller.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_property.h"
 
 DECLARE_WINDOW_PROPERTY_TYPE(ash::wm::WmRootWindowControllerAura*);
 
 namespace ash {
 namespace wm {
 
 // TODO(sky): it likely makes more sense to hang this off RootWindowSettings.
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(ash::wm::WmRootWindowControllerAura,
                                  kWmRootWindowControllerKey,
                                  nullptr);
 
 // static
 WmRootWindowController* WmRootWindowController::GetWithDisplayId(int64_t id) {
   return WmRootWindowControllerAura::Get(Shell::GetInstance()
                                              ->window_tree_host_manager()
                                              ->GetRootWindowForDisplayId(id));
 }
 
 WmRootWindowControllerAura::WmRootWindowControllerAura(
     RootWindowController* root_window_controller)
     : root_window_controller_(root_window_controller) {
   root_window_controller_->GetRootWindow()->SetProperty(
       kWmRootWindowControllerKey, this);
+  Shell::GetInstance()->AddShellObserver(this);
 }
 
-WmRootWindowControllerAura::~WmRootWindowControllerAura() {}
+WmRootWindowControllerAura::~WmRootWindowControllerAura() {
+  Shell::GetInstance()->RemoveShellObserver(this);
+}
 
 // static
 const WmRootWindowControllerAura* WmRootWindowControllerAura::Get(
     const aura::Window* window) {
   if (!window)
     return nullptr;
 
   RootWindowController* root_window_controller =
       GetRootWindowController(window);
   if (!root_window_controller)
@@ skipping 25 matching lines @@
   return WmWindowAura::Get(root_window_controller_->GetRootWindow());
 }
 
 void WmRootWindowControllerAura::ConfigureWidgetInitParamsForContainer(
     views::Widget* widget,
     int shell_container_id,
     views::Widget::InitParams* init_params) {
   init_params->parent = Shell::GetContainer(
       root_window_controller_->GetRootWindow(), shell_container_id);
 }
+
+void WmRootWindowControllerAura::AddObserver(
+    WmRootWindowControllerObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void WmRootWindowControllerAura::RemoveObserver(
+    WmRootWindowControllerObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+void WmRootWindowControllerAura::OnDisplayWorkAreaInsetsChanged() {
+  FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
+                    OnWorkAreaChanged());
+}
+
+void WmRootWindowControllerAura::OnFullscreenStateChanged(
+    bool is_fullscreen,
+    aura::Window* root_window) {
+  if (root_window != root_window_controller_->GetRootWindow())
+    return;
+
+  FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
+                    OnFullscreenStateChanged(is_fullscreen));
+}
+
+void WmRootWindowControllerAura::OnShelfAlignmentChanged(
+    aura::Window* root_window) {
+  if (root_window != root_window_controller_->GetRootWindow())
+    return;
+
+  FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
+                    OnShelfAlignmentChanged());
+}
+
 }  // namespace wm
 }  // namespace ash