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 #if defined(OS_WIN) && defined(PostMessage)
  13 #undef PostMessage
  14 #endif
  15
  16 namespace html_viewer {
  17
  18 DocumentResourceWaiter::DocumentResourceWaiter(GlobalState* global_state,
  19                                                mojo::URLResponsePtr response,
  20                                                HTMLDocumentOOPIF* document)
  21     : global_state_(global_state),
  22       document_(document),
  23       response_(response.Pass()),
  24       root_(nullptr),
  25       change_id_(0u),
  26       frame_tree_client_binding_(this) {}
  27
  28 DocumentResourceWaiter::~DocumentResourceWaiter() {
  29 }
  30
  31 void DocumentResourceWaiter::Release(
  32     mojo::InterfaceRequest<mandoline::FrameTreeClient>*
  33         frame_tree_client_request,
  34     mandoline::FrameTreeServerPtr* frame_tree_server,
  35     mojo::Array<mandoline::FrameDataPtr>* frame_data,
  36     uint32_t* change_id) {
  37   DCHECK(IsReady());
  38   *frame_tree_client_request = frame_tree_client_request_.Pass();
  39   *frame_tree_server = server_.Pass();
  40   *frame_data = frame_data_.Pass();
  41   *change_id = change_id_;
  42 }
  43
  44 mojo::URLResponsePtr DocumentResourceWaiter::ReleaseURLResponse() {
  45   return response_.Pass();
  46 }
  47
  48 bool DocumentResourceWaiter::IsReady() const {
  49   return root_ && root_->viewport_metrics().device_pixel_ratio != 0.0f &&
  50          !frame_data_.is_null();
  51 }
  52
  53 void DocumentResourceWaiter::Bind(
  54     mojo::InterfaceRequest<mandoline::FrameTreeClient> request) {
  55   if (frame_tree_client_binding_.is_bound() || !frame_data_.is_null()) {
  56     DVLOG(1) << "Request for FrameTreeClient after already supplied one";
  57     return;
  58   }
  59   frame_tree_client_binding_.Bind(request.Pass());
  60 }
  61
  62 void DocumentResourceWaiter::OnConnect(
  63     mandoline::FrameTreeServerPtr server,
  64     uint32 change_id,
  65     mojo::Array<mandoline::FrameDataPtr> frame_data) {
  66   DCHECK(frame_data_.is_null());
  67   change_id_ = change_id;
  68   server_ = server.Pass();
  69   frame_data_ = frame_data.Pass();
  70   CHECK(frame_data_.size() > 0u);
  71   frame_tree_client_request_ = frame_tree_client_binding_.Unbind();
  72   if (IsReady())
  73     document_->LoadIfNecessary();
  74 }
  75
  76 void DocumentResourceWaiter::OnFrameAdded(uint32 change_id,
  77                                           mandoline::FrameDataPtr frame_data) {
  78   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  79   NOTREACHED();
  80 }
  81
  82 void DocumentResourceWaiter::OnFrameRemoved(uint32 change_id,
  83                                             uint32_t frame_id) {
  84   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  85   NOTREACHED();
  86 }
  87
  88 void DocumentResourceWaiter::OnFrameClientPropertyChanged(
  89     uint32_t frame_id,
  90     const mojo::String& name,
  91     mojo::Array<uint8_t> new_value) {
  92   // It is assumed we receive OnConnect() (which unbinds) before anything else.
  93   NOTREACHED();
  94 }
  95
  96 void DocumentResourceWaiter::PostMessage(uint32_t source_frame_id,
  97                                          uint32_t target_frame_id,
  98                                          mandoline::HTMLMessageEventPtr event) {
  99   // It is assumed we receive OnConnect() (which unbinds) before anything else.
 100   NOTREACHED();
 101 }
 102
 103 }  // namespace html_viewer