Improving window auto management between workspaces

ash/wm/workspace/workspace_manager2.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 "ash/wm/workspace/workspace_manager2.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "ash/ash_switches.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/base_layout_manager.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/shelf_layout_manager.h"
 #include "ash/wm/window_animations.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_util.h"
+#include "ash/wm/workspace/auto_window_management.h"
 #include "ash/wm/workspace/desktop_background_fade_controller.h"
 #include "ash/wm/workspace/workspace_animations.h"
 #include "ash/wm/workspace/workspace_layout_manager2.h"
 #include "ash/wm/workspace/workspace2.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/root_window.h"
@@ skipping 556 matching lines @@
 }
 
 void WorkspaceManager2::OnWindowAddedToWorkspace(Workspace2* workspace,
                                                  Window* child) {
   child->SetProperty(kWorkspaceKey, workspace);
   // Do nothing (other than updating shelf visibility) as the right parent was
   // chosen by way of GetParentForNewWindow() or we explicitly moved the window
   // to the workspace.
   if (workspace == active_workspace_)
     UpdateShelfVisibility();
+
+  RearrangeVisibleWindowOnShow(child);
 }
 
 void WorkspaceManager2::OnWillRemoveWindowFromWorkspace(Workspace2* workspace,
                                                         Window* child) {
+  RearrangeVisibleWindowOnHideOrRemove(child);
   child->ClearProperty(kWorkspaceKey);
 }
 
 void WorkspaceManager2::OnWindowRemovedFromWorkspace(Workspace2* workspace,
                                                      Window* child) {
   if (workspace->ShouldMoveToPending())
     MoveWorkspaceToPendingOrDelete(workspace, NULL, SWITCH_WINDOW_REMOVED);
 }
 
 void WorkspaceManager2::OnWorkspaceChildWindowVisibilityChanged(
     Workspace2* workspace,
     Window* child) {
-  if (workspace->ShouldMoveToPending())
+  if (workspace->ShouldMoveToPending()) {
     MoveWorkspaceToPendingOrDelete(workspace, NULL, SWITCH_VISIBILITY_CHANGED);
-  else if (workspace == active_workspace_)
-    UpdateShelfVisibility();
+  } else {
+    if (child->TargetVisibility())
+      RearrangeVisibleWindowOnShow(child);
+    else
+      RearrangeVisibleWindowOnHideOrRemove(child);
+    if (workspace == active_workspace_)
+      UpdateShelfVisibility();
+  }
 }
 
 void WorkspaceManager2::OnWorkspaceWindowChildBoundsChanged(
     Workspace2* workspace,
     Window* child) {
   if (workspace == active_workspace_)
     UpdateShelfVisibility();
 }
 
 void WorkspaceManager2::OnWorkspaceWindowShowStateChanged(
@@ skipping 86 matching lines @@
     new_workspace->window()->Show();
   ReparentWindow(window, new_workspace->window(), NULL);
   if (is_active) {
     SetActiveWorkspace(new_workspace, SWITCH_TRACKED_BY_WORKSPACE_CHANGED,
                        base::TimeDelta());
   }
 }
 
 }  // namespace internal
 }  // namespace ash