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// Copyright 2015 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 "components/web_view/frame_tree.h"
#include "components/web_view/frame_tree_delegate.h"
#include "components/web_view/frame_user_data.h"
namespace web_view {
FrameTree::FrameTree(uint32_t root_app_id,
mojo::View* view,
mojo::ViewTreeClientPtr view_tree_client,
FrameTreeDelegate* delegate,
FrameTreeClient* root_client,
scoped_ptr<FrameUserData> user_data,
const Frame::ClientPropertyMap& client_properties)
: view_(view),
delegate_(delegate),
root_(new Frame(this,
view,
view->id(),
root_app_id,
ViewOwnership::DOESNT_OWN_VIEW,
root_client,
user_data.Pass(),
client_properties)),
progress_(0.f),
change_id_(1u) {
root_->Init(nullptr, view_tree_client.Pass());
}
FrameTree::~FrameTree() {
// Destroy the root explicitly in case it calls back to us for state (such
// as to see if it is the root).
delete root_;
root_ = nullptr;
}
Frame* FrameTree::CreateSharedFrame(
Frame* parent,
uint32_t frame_id,
uint32_t app_id,
const Frame::ClientPropertyMap& client_properties) {
mojo::View* frame_view = root_->view()->GetChildById(frame_id);
// |frame_view| may be null if the View hasn't been created yet. If this is
// the case the View will be connected to the Frame in Frame::OnTreeChanged.
Frame* frame =
new Frame(this, frame_view, frame_id, app_id, ViewOwnership::OWNS_VIEW,
nullptr, nullptr, client_properties);
frame->Init(parent, nullptr);
return frame;
}
uint32_t FrameTree::AdvanceChangeID() {
return ++change_id_;
}
void FrameTree::LoadingStateChanged() {
bool loading = root_->IsLoading();
if (delegate_)
delegate_->LoadingStateChanged(loading);
}
void FrameTree::ProgressChanged() {
int frame_count = 0;
double total_progress = root_->GatherProgress(&frame_count);
// Make sure the progress bar never runs backwards, even if that means
// accuracy takes a hit.
progress_ = std::max(progress_, total_progress / frame_count);
if (delegate_)
delegate_->ProgressChanged(progress_);
}
void FrameTree::TitleChanged(const mojo::String& title) {
if (delegate_)
delegate_->TitleChanged(title);
}
void FrameTree::ClientPropertyChanged(const Frame* source,
const mojo::String& name,
const mojo::Array<uint8_t>& value) {
root_->NotifyClientPropertyChanged(source, name, value);
}
} // namespace web_view
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