content/browser/android/ui_resource_provider_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/android/ui_resource_provider_impl.h"
   6
   7 #include "cc/resources/ui_resource_client.h"
   8 #include "cc/trees/layer_tree_host.h"
   9 #include "content/public/browser/android/ui_resource_client_android.h"
  10
  11 namespace content {
  12
  13 UIResourceProviderImpl::UIResourceProviderImpl() : host_(NULL) {
  14 }
  15
  16 UIResourceProviderImpl::~UIResourceProviderImpl() {
  17   SetLayerTreeHost(NULL);
  18 }
  19
  20 void UIResourceProviderImpl::SetLayerTreeHost(cc::LayerTreeHost* host) {
  21   if (host_ == host)
  22     return;
  23   host_ = host;
  24   UIResourcesAreInvalid();
  25 }
  26
  27 void UIResourceProviderImpl::UIResourcesAreInvalid() {
  28   UIResourceClientMap client_map = ui_resource_client_map_;
  29   ui_resource_client_map_.clear();
  30   for (UIResourceClientMap::iterator iter = client_map.begin();
  31        iter != client_map.end();
  32        iter++) {
  33     iter->second->UIResourceIsInvalid();
  34   }
  35 }
  36
  37 cc::UIResourceId UIResourceProviderImpl::CreateUIResource(
  38     UIResourceClientAndroid* client) {
  39   if (!host_)
  40     return 0;
  41   cc::UIResourceId id = host_->CreateUIResource(client);
  42   DCHECK(ui_resource_client_map_.find(id) == ui_resource_client_map_.end());
  43
  44   ui_resource_client_map_[id] = client;
  45   return id;
  46 }
  47
  48 void UIResourceProviderImpl::DeleteUIResource(cc::UIResourceId ui_resource_id) {
  49   UIResourceClientMap::iterator iter =
  50       ui_resource_client_map_.find(ui_resource_id);
  51   DCHECK(iter != ui_resource_client_map_.end());
  52
  53   ui_resource_client_map_.erase(iter);
  54
  55   if (!host_)
  56     return;
  57   host_->DeleteUIResource(ui_resource_id);
  58 }
  59
  60 }  // namespace content