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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 "mandoline/tab/frame.h"
#include <algorithm>
#include "base/stl_util.h"
#include "components/view_manager/public/cpp/view.h"
#include "components/view_manager/public/cpp/view_property.h"
#include "mandoline/tab/frame_tree.h"
#include "mandoline/tab/frame_tree_delegate.h"
#include "mandoline/tab/frame_user_data.h"
using mojo::View;
DECLARE_VIEW_PROPERTY_TYPE(mandoline::Frame*);
namespace mandoline {
// Used to find the Frame associated with a View.
DEFINE_LOCAL_VIEW_PROPERTY_KEY(Frame*, kFrame, nullptr);
namespace {
const uint32_t kNoParentId = 0u;
FrameDataPtr FrameToFrameData(const Frame* frame) {
FrameDataPtr frame_data(FrameData::New());
frame_data->frame_id = frame->view()->id();
frame_data->parent_id =
frame->parent() ? frame->parent()->view()->id() : kNoParentId;
return frame_data.Pass();
}
} // namespace
Frame::Frame(FrameTree* tree,
View* view,
ViewOwnership view_ownership,
FrameTreeClient* frame_tree_client,
scoped_ptr<FrameUserData> user_data)
: tree_(tree),
view_(view),
parent_(nullptr),
view_ownership_(view_ownership),
user_data_(user_data.Pass()),
frame_tree_client_(frame_tree_client),
frame_tree_server_binding_(this) {
view_->SetLocalProperty(kFrame, this);
view_->AddObserver(this);
}
Frame::~Frame() {
if (view_)
view_->RemoveObserver(this);
while (!children_.empty())
delete children_[0];
if (parent_)
parent_->Remove(this);
if (view_)
view_->ClearLocalProperty(kFrame);
if (view_ownership_ == ViewOwnership::OWNS_VIEW)
view_->Destroy();
}
void Frame::Init(Frame* parent) {
if (parent)
parent->Add(this);
std::vector<const Frame*> frames;
tree_->root()->BuildFrameTree(&frames);
mojo::Array<FrameDataPtr> array(frames.size());
for (size_t i = 0; i < frames.size(); ++i)
array[i] = FrameToFrameData(frames[i]).Pass();
// TODO(sky): error handling.
FrameTreeServerPtr frame_tree_server_ptr;
frame_tree_server_binding_.Bind(GetProxy(&frame_tree_server_ptr).Pass());
frame_tree_client_->OnConnect(frame_tree_server_ptr.Pass(), array.Pass());
}
// static
Frame* Frame::FindFirstFrameAncestor(View* view) {
while (view && !view->GetLocalProperty(kFrame))
view = view->parent();
return view ? view->GetLocalProperty(kFrame) : nullptr;
}
const Frame* Frame::FindFrame(uint32_t id) const {
if (id == view_->id())
return this;
for (const Frame* child : children_) {
const Frame* match = child->FindFrame(id);
if (match)
return match;
}
return nullptr;
}
bool Frame::HasAncestor(const Frame* frame) const {
const Frame* current = this;
while (current && current != frame)
current = current->parent_;
return current == frame;
}
void Frame::BuildFrameTree(std::vector<const Frame*>* frames) const {
frames->push_back(this);
for (const Frame* frame : children_)
frame->BuildFrameTree(frames);
}
void Frame::Add(Frame* node) {
DCHECK(!node->parent_);
node->parent_ = this;
children_.push_back(node);
tree_->root()->NotifyAdded(this, node);
}
void Frame::Remove(Frame* node) {
DCHECK_EQ(node->parent_, this);
auto iter = std::find(children_.begin(), children_.end(), node);
DCHECK(iter != children_.end());
node->parent_ = nullptr;
children_.erase(iter);
tree_->root()->NotifyRemoved(this, node);
}
void Frame::NotifyAdded(const Frame* source, const Frame* added_node) {
if (added_node == this)
return;
if (source != this)
frame_tree_client_->OnFrameAdded(FrameToFrameData(added_node));
for (Frame* child : children_)
child->NotifyAdded(source, added_node);
}
void Frame::NotifyRemoved(const Frame* source, const Frame* removed_node) {
if (removed_node == this)
return;
if (source != this)
frame_tree_client_->OnFrameRemoved(removed_node->view_->id());
for (Frame* child : children_)
child->NotifyRemoved(source, removed_node);
}
void Frame::OnViewDestroying(mojo::View* view) {
if (parent_)
parent_->Remove(this);
// Reset |view_ownership_| so we don't attempt to delete |view_| in the
// destructor.
view_ownership_ = ViewOwnership::DOESNT_OWN_VIEW;
// Assume the view associated with the root is never deleted out from under
// us.
// TODO(sky): Change browser to create a child for each FrameTree.
if (tree_->root() == this) {
view_->RemoveObserver(this);
view_ = nullptr;
return;
}
delete this;
}
void Frame::PostMessageEventToFrame(uint32_t frame_id, MessageEventPtr event) {
Frame* target = tree_->root()->FindFrame(frame_id);
if (!target ||
!tree_->delegate_->CanPostMessageEventToFrame(this, target, event.get()))
return;
NOTIMPLEMENTED();
}
void Frame::NavigateFrame(uint32_t frame_id) {
NOTIMPLEMENTED();
}
void Frame::ReloadFrame(uint32_t frame_id) {
NOTIMPLEMENTED();
}
} // namespace mandoline
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