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      1 // Copyright 2013 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/renderer_host/delegated_frame_evictor.h"
      6 
      7 #include "base/logging.h"
      8 
      9 namespace content {
     10 
     11 DelegatedFrameEvictor::DelegatedFrameEvictor(
     12     DelegatedFrameEvictorClient* client)
     13     : client_(client), has_frame_(false) {}
     14 
     15 DelegatedFrameEvictor::~DelegatedFrameEvictor() { DiscardedFrame(); }
     16 
     17 void DelegatedFrameEvictor::SwappedFrame(bool visible) {
     18   has_frame_ = true;
     19   RendererFrameManager::GetInstance()->AddFrame(this, visible);
     20 }
     21 
     22 void DelegatedFrameEvictor::DiscardedFrame() {
     23   RendererFrameManager::GetInstance()->RemoveFrame(this);
     24   has_frame_ = false;
     25 }
     26 
     27 void DelegatedFrameEvictor::SetVisible(bool visible) {
     28   if (has_frame_) {
     29     if (visible) {
     30       RendererFrameManager::GetInstance()->LockFrame(this);
     31     } else {
     32       RendererFrameManager::GetInstance()->UnlockFrame(this);
     33     }
     34   }
     35 }
     36 
     37 void DelegatedFrameEvictor::LockFrame() {
     38   DCHECK(has_frame_);
     39   RendererFrameManager::GetInstance()->LockFrame(this);
     40 }
     41 
     42 void DelegatedFrameEvictor::UnlockFrame() {
     43   DCHECK(has_frame_);
     44   RendererFrameManager::GetInstance()->UnlockFrame(this);
     45 }
     46 
     47 void DelegatedFrameEvictor::EvictCurrentFrame() {
     48   client_->EvictDelegatedFrame();
     49 }
     50 
     51 }  // namespace content
     52