Move navigation and frame tree classes to a new frame_host/ directory.

content/browser/renderer_host/frame_tree.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 "content/browser/renderer_host/frame_tree.h"
-
-#include <queue>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "content/browser/renderer_host/frame_tree_node.h"
-#include "content/browser/renderer_host/render_frame_host_impl.h"
-
-namespace content {
-
-namespace {
-// Used with FrameTree::ForEach() to search for the FrameTreeNode
-// corresponding to |frame_id|.
-bool FrameTreeNodeForId(int64 frame_id, FrameTreeNode** out_node,
-                        FrameTreeNode* node) {
-  if (node->frame_id() == frame_id) {
-    *out_node = node;
-    // Terminate iteration once the node has been found.
-    return false;
-  }
-  return true;
-}
-
-}  // namespace
-
-FrameTree::FrameTree()
-    : root_(new FrameTreeNode(FrameTreeNode::kInvalidFrameId, std::string(),
-                              scoped_ptr<RenderFrameHostImpl>())) {
-}
-
-FrameTree::~FrameTree() {
-}
-
-FrameTreeNode* FrameTree::FindByID(int64 frame_id) {
-  FrameTreeNode* node = NULL;
-  ForEach(base::Bind(&FrameTreeNodeForId, frame_id, &node));
-  return node;
-}
-
-void FrameTree::ForEach(
-    const base::Callback<bool(FrameTreeNode*)>& on_node) const {
-  std::queue<FrameTreeNode*> queue;
-  queue.push(root_.get());
-
-  while (!queue.empty()) {
-    FrameTreeNode* node = queue.front();
-    queue.pop();
-    if (!on_node.Run(node))
-      break;
-
-    for (size_t i = 0; i < node->child_count(); ++i)
-      queue.push(node->child_at(i));
-  }
-}
-
-bool FrameTree::IsFirstNavigationAfterSwap() const {
-  return root_->frame_id() == FrameTreeNode::kInvalidFrameId;
-}
-
-void FrameTree::OnFirstNavigationAfterSwap(int main_frame_id) {
-  root_->set_frame_id(main_frame_id);
-}
-
-void FrameTree::AddFrame(int render_frame_host_id, int64 parent_frame_id,
-                         int64 frame_id, const std::string& frame_name) {
-  FrameTreeNode* parent = FindByID(parent_frame_id);
-  // TODO(ajwong): Should the renderer be killed here? Would there be a race on
-  // shutdown that might make this case possible?
-  if (!parent)
-    return;
-
-  parent->AddChild(CreateNode(frame_id, frame_name, render_frame_host_id,
-                              parent->render_frame_host()->GetProcess()));
-}
-
-void FrameTree::RemoveFrame(int64 parent_frame_id, int64 frame_id) {
-  // If switches::kSitePerProcess is not specified, then the FrameTree only
-  // contains a node for the root element. However, even in this case
-  // frame detachments need to be broadcast outwards.
-  //
-  // TODO(ajwong): Move this below the |parent| check after the FrameTree is
-  // guaranteed to be correctly populated even without the
-  // switches::kSitePerProcess flag.
-  FrameTreeNode* parent = FindByID(parent_frame_id);
-  if (!on_frame_removed_.is_null()) {
-    on_frame_removed_.Run(
-        root_->render_frame_host()->render_view_host(), frame_id);
-  }
-
-  // TODO(ajwong): Should the renderer be killed here? Would there be a race on
-  // shutdown that might make this case possible?
-  if (!parent)
-    return;
-
-  parent->RemoveChild(frame_id);
-}
-
-void FrameTree::SetFrameUrl(int64 frame_id, const GURL& url) {
-  FrameTreeNode* node = FindByID(frame_id);
-  // TODO(ajwong): Should the renderer be killed here? Would there be a race on
-  // shutdown that might make this case possible?
-  if (!node)
-    return;
-
-  if (node)
-    node->set_current_url(url);
-}
-
-void FrameTree::SwapMainFrame(RenderFrameHostImpl* render_frame_host) {
-  return root_->ResetForMainFrame(render_frame_host);
-}
-
-RenderFrameHostImpl* FrameTree::GetMainFrame() const {
-  return root_->render_frame_host();
-}
-
-void FrameTree::SetFrameRemoveListener(
-    const base::Callback<void(RenderViewHostImpl*, int64)>& on_frame_removed) {
-  on_frame_removed_ = on_frame_removed;
-}
-
-scoped_ptr<FrameTreeNode> FrameTree::CreateNode(
-    int64 frame_id, const std::string& frame_name, int render_frame_host_id,
-    RenderProcessHost* render_process_host) {
-  scoped_ptr<RenderFrameHostImpl> render_frame_host(
-      new RenderFrameHostImpl(root_->render_frame_host()->render_view_host(),
-                              this, render_frame_host_id, false));
-
-  return make_scoped_ptr(new FrameTreeNode(frame_id, frame_name,
-                                           render_frame_host.Pass()));
-}
-
-}  // namespace content