| // 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 "content/browser/frame_host/frame_tree_node.h" |
| |
| #include <queue> |
| |
| #include "base/command_line.h" |
| #include "base/stl_util.h" |
| #include "content/browser/frame_host/frame_tree.h" |
| #include "content/browser/frame_host/navigator.h" |
| #include "content/browser/frame_host/render_frame_host_impl.h" |
| #include "content/browser/renderer_host/render_view_host_impl.h" |
| #include "content/public/common/content_switches.h" |
| |
| namespace content { |
| |
| int64 FrameTreeNode::next_frame_tree_node_id_ = 1; |
| |
| FrameTreeNode::FrameTreeNode(FrameTree* frame_tree, |
| Navigator* navigator, |
| RenderFrameHostDelegate* render_frame_delegate, |
| RenderViewHostDelegate* render_view_delegate, |
| RenderWidgetHostDelegate* render_widget_delegate, |
| RenderFrameHostManager::Delegate* manager_delegate, |
| const std::string& name) |
| : frame_tree_(frame_tree), |
| navigator_(navigator), |
| render_manager_(this, |
| render_frame_delegate, |
| render_view_delegate, |
| render_widget_delegate, |
| manager_delegate), |
| frame_tree_node_id_(next_frame_tree_node_id_++), |
| frame_name_(name), |
| parent_(NULL) {} |
| |
| FrameTreeNode::~FrameTreeNode() { |
| if (CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kEnableBrowserSideNavigation)) { |
| navigator_->CancelNavigation(this); |
| } |
| } |
| |
| bool FrameTreeNode::IsMainFrame() const { |
| return frame_tree_->root() == this; |
| } |
| |
| void FrameTreeNode::AddChild(scoped_ptr<FrameTreeNode> child, |
| int process_id, |
| int frame_routing_id) { |
| // Child frame must always be created in the same process as the parent. |
| CHECK_EQ(process_id, render_manager_.current_host()->GetProcess()->GetID()); |
| |
| // Initialize the RenderFrameHost for the new node. We always create child |
| // frames in the same SiteInstance as the current frame, and they can swap to |
| // a different one if they navigate away. |
| child->render_manager()->Init( |
| render_manager_.current_host()->GetSiteInstance()->GetBrowserContext(), |
| render_manager_.current_host()->GetSiteInstance(), |
| render_manager_.current_host()->GetRoutingID(), |
| frame_routing_id); |
| child->set_parent(this); |
| children_.push_back(child.release()); |
| } |
| |
| void FrameTreeNode::RemoveChild(FrameTreeNode* child) { |
| std::vector<FrameTreeNode*>::iterator iter; |
| |
| for (iter = children_.begin(); iter != children_.end(); ++iter) { |
| if ((*iter) == child) |
| break; |
| } |
| |
| if (iter != children_.end()) { |
| // Subtle: we need to make sure the node is gone from the tree before |
| // observers are notified of its deletion. |
| scoped_ptr<FrameTreeNode> node_to_delete(*iter); |
| children_.weak_erase(iter); |
| node_to_delete->set_parent(NULL); |
| node_to_delete.reset(); |
| } |
| } |
| |
| void FrameTreeNode::ResetForNewProcess() { |
| current_url_ = GURL(); |
| |
| // The RenderFrame no longer exists and will need to be created again. |
| current_frame_host()->set_render_frame_created(false); |
| |
| // The children may not have been cleared if a cross-process navigation |
| // commits before the old process cleans everything up. Make sure the child |
| // nodes get deleted before swapping to a new process. |
| ScopedVector<FrameTreeNode> old_children = children_.Pass(); |
| old_children.clear(); // May notify observers. |
| } |
| |
| } // namespace content |