mash: Support ShelfModel access in Chrome.

ash/shelf/shelf_window_watcher.cc

 // Copyright 2013 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/shelf/shelf_window_watcher.h"
 
 #include <memory>
 #include <utility>
 
-#include "ash/public/cpp/config.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/public/cpp/window_properties.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_model.h"
 #include "ash/shelf/shelf_window_watcher_item_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm_window.h"
 #include "base/strings/string_number_conversions.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/resources/grit/ui_resources.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
 namespace {
 
-// Returns the shelf item type, with special temporary behavior for Mash:
-// Mash provides a default shelf item type (TYPE_APP) for non-ignored windows.
+// Returns the window's shelf item type property value.
 ShelfItemType GetShelfItemType(aura::Window* window) {
-  // TODO(msw): Remove Mash default ShelfItemType assignment. crbug.com/722496
-  if (Shell::GetAshConfig() == Config::MASH &&
-      window->GetProperty(kShelfItemTypeKey) == TYPE_UNDEFINED &&
-      !wm::GetWindowState(window)->ignored_by_shelf()) {
-    return TYPE_APP;
-  }
   return static_cast<ShelfItemType>(window->GetProperty(kShelfItemTypeKey));
 }
 
-// Returns the shelf id, with special temporary behavior for Mash:
-// Mash provides a default shelf ids for non-ignored windows.
+// Returns the window's shelf id property value.
 ShelfID GetShelfID(aura::Window* window) {
-  // TODO(msw): Remove Mash default ShelfID assignment. crbug.com/722496
-  if (Shell::GetAshConfig() == Config::MASH &&
-      !window->GetProperty(kShelfIDKey) &&
-      !wm::GetWindowState(window)->ignored_by_shelf()) {
-    static int id = 0;
-    const ash::ShelfID shelf_id(base::IntToString(id++));
-    window->SetProperty(kShelfIDKey, new std::string(shelf_id.Serialize()));
-    return shelf_id;
-  }
   return ShelfID::Deserialize(window->GetProperty(kShelfIDKey));
 }
 
 // Update the ShelfItem from relevant window properties.
 void UpdateShelfItemForWindow(ShelfItem* item, aura::Window* window) {
+  DCHECK(item->id.IsNull() || item->id == GetShelfID(window));
   item->id = GetShelfID(window);
   item->type = GetShelfItemType(window);
 
   item->status = STATUS_RUNNING;
   if (wm::IsActiveWindow(window))
     item->status = STATUS_ACTIVE;
   else if (window->GetProperty(aura::client::kDrawAttentionKey))
     item->status = STATUS_ATTENTION;
 
   // Prefer app icons over window icons, they're typically larger.
@@ skipping 42 matching lines @@
 ShelfWindowWatcher::UserWindowObserver::UserWindowObserver(
     ShelfWindowWatcher* window_watcher)
     : window_watcher_(window_watcher) {}
 
 ShelfWindowWatcher::UserWindowObserver::~UserWindowObserver() {}
 
 void ShelfWindowWatcher::UserWindowObserver::OnWindowPropertyChanged(
     aura::Window* window,
     const void* key,
     intptr_t old) {
-  // ShelfIDs should never change except when replacing Mash temporary defaults.
-  // TODO(msw): Remove Mash default ShelfID handling. crbug.com/722496
-  if (Shell::GetAshConfig() == Config::MASH && key == kShelfIDKey) {
-    ShelfID old_id = ShelfID::Deserialize(reinterpret_cast<std::string*>(old));
-    ShelfID new_id = ShelfID::Deserialize(window->GetProperty(kShelfIDKey));
-    if (old_id != new_id && !old_id.IsNull() && !new_id.IsNull()) {
-      // Id changing is not supported; remove the item and it will be re-added.
-      window_watcher_->user_windows_with_items_.erase(window);
-      const int index = window_watcher_->model_->ItemIndexByID(old_id);
-      window_watcher_->model_->RemoveItemAt(index);
-    }
-  }
-
   if (key == aura::client::kAppIconKey || key == aura::client::kWindowIconKey ||
       key == aura::client::kDrawAttentionKey || key == kPanelAttachedKey ||
       key == kShelfItemTypeKey || key == kShelfIDKey) {
     window_watcher_->OnUserWindowPropertyChanged(window);
   }
 }
 
 void ShelfWindowWatcher::UserWindowObserver::OnWindowDestroying(
     aura::Window* window) {
   window_watcher_->OnUserWindowDestroying(window);
@@ skipping 33 matching lines @@
 ShelfWindowWatcher::~ShelfWindowWatcher() {
   display::Screen::GetScreen()->RemoveObserver(this);
   Shell::Get()->activation_client()->RemoveObserver(this);
 }
 
 void ShelfWindowWatcher::AddShelfItem(aura::Window* window) {
   user_windows_with_items_.insert(window);
   ShelfItem item;
   UpdateShelfItemForWindow(&item, window);
 
-  // ShelfWindowWatcher[ItemDelegate] doesn't support multiple windows per item,
-  // but this can happen in Mash (eg. when multiple browser windows are open).
-  // Assign a unique launch id in this case to avoid crashing on DCHECKs.
-  // TODO(msw): Remove Mash duplicate ShelfID handling. crbug.com/722496
-  if (Shell::GetAshConfig() == Config::MASH &&
-      model_->ItemIndexByID(item.id) > 0) {
-    static int id = 0;
-    item.id.launch_id = base::IntToString(id++);
-  }
-
   model_->SetShelfItemDelegate(item.id,
                                base::MakeUnique<ShelfWindowWatcherItemDelegate>(
                                    item.id, WmWindow::Get(window)));
   // Panels are inserted on the left so as not to push all existing panels over.
   model_->AddAt(item.type == TYPE_APP_PANEL ? 0 : model_->item_count(), item);
 }
 
 void ShelfWindowWatcher::RemoveShelfItem(aura::Window* window) {
   user_windows_with_items_.erase(window);
   const ShelfID shelf_id = GetShelfID(window);
@@ skipping 85 matching lines @@
   }
 }
 
 void ShelfWindowWatcher::OnDisplayRemoved(const display::Display& old_display) {
 }
 
 void ShelfWindowWatcher::OnDisplayMetricsChanged(const display::Display&,
                                                  uint32_t) {}
 
 }  // namespace ash