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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.
#ifndef COMPONENTS_WEB_VIEW_WEB_VIEW_IMPL_H_
#define COMPONENTS_WEB_VIEW_WEB_VIEW_IMPL_H_
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "components/mus/public/cpp/view_observer.h"
#include "components/mus/public/cpp/view_tree_delegate.h"
#include "components/web_view/frame_devtools_agent_delegate.h"
#include "components/web_view/frame_tree_delegate.h"
#include "components/web_view/public/interfaces/web_view.mojom.h"
#include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
namespace mojo {
class ApplicationImpl;
}
namespace web_view {
class Frame;
class FrameDevToolsAgent;
class FrameTree;
class HTMLMessageEvent;
class PendingWebViewLoad;
class URLRequestCloneable;
class WebViewImpl : public mojom::WebView,
public mus::ViewTreeDelegate,
public mus::ViewObserver,
public FrameTreeDelegate,
public FrameDevToolsAgentDelegate {
public:
WebViewImpl(mojo::ApplicationImpl* app,
mojom::WebViewClientPtr client,
mojo::InterfaceRequest<WebView> request);
~WebViewImpl() override;
private:
friend class PendingWebViewLoad;
// See description above |pending_load_| for details.
void OnLoad();
// Actually performs the load and tells our delegate the state of the
// forward/back list is. This is the shared implementation between
// LoadRequest() and Go{Back,Forward}().
void LoadRequestImpl(mojo::URLRequestPtr request);
// Overridden from WebView:
void LoadRequest(mojo::URLRequestPtr request) override;
void GetViewTreeClient(
mojo::InterfaceRequest<mojo::ViewTreeClient> view_tree_client)
override;
void GoBack() override;
void GoForward() override;
// Overridden from mus::ViewTreeDelegate:
void OnEmbed(mus::View* root) override;
void OnConnectionLost(mus::ViewTreeConnection* connection) override;
// Overridden from mus::ViewObserver:
void OnViewBoundsChanged(mus::View* view,
const mojo::Rect& old_bounds,
const mojo::Rect& new_bounds) override;
void OnViewDestroyed(mus::View* view) override;
// Overridden from FrameTreeDelegate:
bool CanPostMessageEventToFrame(const Frame* source,
const Frame* target,
HTMLMessageEvent* event) override;
void LoadingStateChanged(bool loading) override;
void ProgressChanged(double progress) override;
void TitleChanged(const mojo::String& title) override;
void NavigateTopLevel(Frame* source, mojo::URLRequestPtr request) override;
void CanNavigateFrame(Frame* target,
mojo::URLRequestPtr request,
const CanNavigateFrameCallback& callback) override;
void DidStartNavigation(Frame* frame) override;
// Overridden from FrameDevToolsAgent::Delegate:
void HandlePageNavigateRequest(const GURL& url) override;
mojo::ApplicationImpl* app_;
mojom::WebViewClientPtr client_;
mojo::StrongBinding<WebView> binding_;
mus::View* root_;
mus::View* content_;
scoped_ptr<FrameTree> frame_tree_;
// When LoadRequest() is called a PendingWebViewLoad is created to wait for
// state needed to process the request. When the state is obtained OnLoad()
// is invoked.
scoped_ptr<PendingWebViewLoad> pending_load_;
scoped_ptr<FrameDevToolsAgent> devtools_agent_;
// It would be nice if mojo::URLRequest were cloneable; however, its use of
// ScopedDataPipieConsumerHandle means that it isn't.
ScopedVector<URLRequestCloneable> back_list_;
ScopedVector<URLRequestCloneable> forward_list_;
// The request which is either currently loading or completed. Added to
// |back_list_| or |forward_list_| on further navigation.
scoped_ptr<URLRequestCloneable> current_page_request_;
DISALLOW_COPY_AND_ASSIGN(WebViewImpl);
};
} // namespace web_view
#endif // COMPONENTS_WEB_VIEW_WEB_VIEW_IMPL_H_
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