// Copyright 2013 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_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_
#define COMPONENTS_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_
#include <vector>
#include "base/basictypes.h"
#include "content/public/renderer/render_view_observer.h"
#include "third_party/WebKit/public/web/WebDOMEventListener.h"
#include "third_party/WebKit/public/web/WebNode.h"
namespace autofill {
class PageClickListener;
// This class is responsible for tracking clicks on elements in web pages and
// notifiying the associated listener when a node is clicked.
// Compared to a simple WebDOMEventListener, it offers the added capability of
// notifying the listeners of whether the clicked node was already focused
// before it was clicked.
//
// This is useful for password/form autofill where we want to trigger a
// suggestion popup when a text input is clicked.
// It only notifies of WebInputElement that are text inputs being clicked, but
// could easily be changed to report click on any type of WebNode.
//
// There is one PageClickTracker per RenderView.
class PageClickTracker : public content::RenderViewObserver,
public blink::WebDOMEventListener {
public:
// The |listener| will be notified when an element is clicked. It must
// outlive this class.
PageClickTracker(content::RenderView* render_view,
PageClickListener* listener);
virtual ~PageClickTracker();
private:
// RenderView::Observer implementation.
virtual void DidFinishDocumentLoad(blink::WebFrame* frame) OVERRIDE;
virtual void FrameDetached(blink::WebFrame* frame) OVERRIDE;
virtual void DidHandleMouseEvent(const blink::WebMouseEvent& event) OVERRIDE;
// blink::WebDOMEventListener implementation.
virtual void handleEvent(const blink::WebDOMEvent& event);
// Checks to see if a text field is losing focus and inform listeners if
// it is.
void HandleTextFieldMaybeLosingFocus(
const blink::WebNode& newly_clicked_node);
// The last node that was clicked and had focus.
blink::WebNode last_node_clicked_;
// Whether the last clicked node had focused before it was clicked.
bool was_focused_;
// The frames we are listening to for mouse events.
std::vector<blink::WebFrame*> tracked_frames_;
// The listener getting the actual notifications.
PageClickListener* listener_;
DISALLOW_COPY_AND_ASSIGN(PageClickTracker);
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_