content/browser/frame_host/frame_tree_node.cc

   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/frame_host/frame_tree_node.h"
   6
   7 #include <queue>
   8
   9 #include "base/stl_util.h"
  10 #include "content/browser/frame_host/frame_tree.h"
  11 #include "content/browser/frame_host/navigator.h"
  12 #include "content/browser/frame_host/render_frame_host_impl.h"
  13 #include "content/browser/renderer_host/render_view_host_impl.h"
  14
  15 namespace content {
  16
  17 const int64 FrameTreeNode::kInvalidFrameId = -1;
  18 int64 FrameTreeNode::next_frame_tree_node_id_ = 1;
  19
  20 FrameTreeNode::FrameTreeNode(FrameTree* frame_tree,
  21                              Navigator* navigator,
  22                              RenderFrameHostDelegate* render_frame_delegate,
  23                              RenderViewHostDelegate* render_view_delegate,
  24                              RenderWidgetHostDelegate* render_widget_delegate,
  25                              RenderFrameHostManager::Delegate* manager_delegate,
  26                              int64 frame_id,
  27                              const std::string& name)
  28   : frame_tree_(frame_tree),
  29     navigator_(navigator),
  30     render_manager_(this,
  31                     render_frame_delegate,
  32                     render_view_delegate,
  33                     render_widget_delegate,
  34                     manager_delegate),
  35     frame_tree_node_id_(next_frame_tree_node_id_++),
  36     frame_id_(frame_id),
  37     frame_name_(name) {
  38 }
  39
  40 FrameTreeNode::~FrameTreeNode() {
  41 }
  42
  43 bool FrameTreeNode::IsMainFrame() const {
  44   return frame_tree_->root() == this;
  45 }
  46
  47 void FrameTreeNode::AddChild(scoped_ptr<FrameTreeNode> child,
  48                              int frame_routing_id) {
  49   // Initialize the RenderFrameHost for the new node.  We always create child
  50   // frames in the same SiteInstance as the current frame, and they can swap to
  51   // a different one if they navigate away.
  52   child->render_manager()->Init(
  53       render_manager_.current_host()->GetSiteInstance()->GetBrowserContext(),
  54       render_manager_.current_host()->GetSiteInstance(),
  55       render_manager_.current_host()->GetRoutingID(),
  56       frame_routing_id);
  57   children_.push_back(child.release());
  58 }
  59
  60 void FrameTreeNode::RemoveChild(FrameTreeNode* child) {
  61   std::vector<FrameTreeNode*>::iterator iter;
  62
  63   for (iter = children_.begin(); iter != children_.end(); ++iter) {
  64     if ((*iter) == child)
  65       break;
  66   }
  67
  68   if (iter != children_.end())
  69     children_.erase(iter);
  70 }
  71
  72 void FrameTreeNode::ResetForMainFrameSwap() {
  73   frame_id_ = kInvalidFrameId;
  74   current_url_ = GURL();
  75
  76   // The children may not have been cleared if a cross-process navigation
  77   // commits before the old process cleans everything up.  Make sure the child
  78   // nodes get deleted.
  79   children_.clear();
  80 }
  81
  82 }  // namespace content