components/html_viewer/document_resource_waiter.cc

   1 // Copyright 2015 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 "components/html_viewer/document_resource_waiter.h"
   6
   7 #include "components/html_viewer/global_state.h"
   8 #include "components/html_viewer/html_document_oopif.h"
   9 #include "components/html_viewer/html_frame_tree_manager.h"
  10 #include "components/view_manager/public/cpp/view.h"
  11
  12 namespace html_viewer {
  13
  14 DocumentResourceWaiter::DocumentResourceWaiter(GlobalState* global_state,
  15                                                mojo::URLResponsePtr response,
  16                                                HTMLDocumentOOPIF* document)
  17     : global_state_(global_state),
  18       document_(document),
  19       response_(response.Pass()),
  20       root_(nullptr),
  21       frame_tree_client_binding_(this) {
  22 }
  23
  24 DocumentResourceWaiter::~DocumentResourceWaiter() {
  25 }
  26
  27 void DocumentResourceWaiter::Release(
  28     mojo::InterfaceRequest<mandoline::FrameTreeClient>*
  29         frame_tree_client_request,
  30     mandoline::FrameTreeServerPtr* frame_tree_server,
  31     mojo::Array<mandoline::FrameDataPtr>* frame_data) {
  32   DCHECK(IsReady());
  33   *frame_tree_client_request = frame_tree_client_request_.Pass();
  34   *frame_tree_server = server_.Pass();
  35   *frame_data = frame_data_.Pass();
  36 }
  37
  38 mojo::URLResponsePtr DocumentResourceWaiter::ReleaseURLResponse() {
  39   return response_.Pass();
  40 }
  41
  42 bool DocumentResourceWaiter::IsReady() const {
  43   return root_ && root_->viewport_metrics().device_pixel_ratio != 0.0f &&
  44          !frame_data_.is_null();
  45 }
  46
  47 void DocumentResourceWaiter::Bind(
  48     mojo::InterfaceRequest<mandoline::FrameTreeClient> request) {
  49   if (frame_tree_client_binding_.is_bound() || !frame_data_.is_null()) {
  50     DVLOG(1) << "Request for FrameTreeClient after already supplied one";
  51     return;
  52   }
  53   frame_tree_client_binding_.Bind(request.Pass());
  54 }
  55
  56 void DocumentResourceWaiter::OnConnect(
  57     mandoline::FrameTreeServerPtr server,
  58     mojo::Array<mandoline::FrameDataPtr> frame_data) {
  59   DCHECK(frame_data_.is_null());
  60   server_ = server.Pass();
  61   frame_data_ = frame_data.Pass();
  62   CHECK(frame_data_.size() > 0u);
  63   frame_tree_client_request_ = frame_tree_client_binding_.Unbind();
  64   if (IsReady())
  65     document_->LoadIfNecessary();
  66 }
  67
  68 void DocumentResourceWaiter::OnFrameAdded(mandoline::FrameDataPtr frame_data) {
  69   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  70   NOTREACHED();
  71 }
  72
  73 void DocumentResourceWaiter::OnFrameRemoved(uint32_t frame_id) {
  74   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  75   NOTREACHED();
  76 }
  77
  78 void DocumentResourceWaiter::OnFrameClientPropertyChanged(
  79     uint32_t frame_id,
  80     const mojo::String& name,
  81     mojo::Array<uint8_t> new_value) {
  82   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  83   NOTREACHED();
  84 }
  85
  86 }  // namespace html_viewer