1 // Copyright 2013 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 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_ 6 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_ 7 8 #include <vector> 9 10 #include "base/basictypes.h" 11 #include "content/public/renderer/render_view_observer.h" 12 #include "third_party/WebKit/public/web/WebDOMEventListener.h" 13 #include "third_party/WebKit/public/web/WebNode.h" 14 15 namespace autofill { 16 17 class PageClickListener; 18 19 // This class is responsible for tracking clicks on elements in web pages and 20 // notifiying the associated listener when a node is clicked. 21 // Compared to a simple WebDOMEventListener, it offers the added capability of 22 // notifying the listeners of whether the clicked node was already focused 23 // before it was clicked. 24 // 25 // This is useful for password/form autofill where we want to trigger a 26 // suggestion popup when a text input is clicked. 27 // It only notifies of WebInputElement that are text inputs being clicked, but 28 // could easily be changed to report click on any type of WebNode. 29 // 30 // There is one PageClickTracker per RenderView. 31 class PageClickTracker : public content::RenderViewObserver, 32 public WebKit::WebDOMEventListener { 33 public: 34 // The |listener| will be notified when an element is clicked. It must 35 // outlive this class. 36 PageClickTracker(content::RenderView* render_view, 37 PageClickListener* listener); 38 virtual ~PageClickTracker(); 39 40 private: 41 // RenderView::Observer implementation. 42 virtual void DidFinishDocumentLoad(WebKit::WebFrame* frame) OVERRIDE; 43 virtual void FrameDetached(WebKit::WebFrame* frame) OVERRIDE; 44 virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) OVERRIDE; 45 46 // WebKit::WebDOMEventListener implementation. 47 virtual void handleEvent(const WebKit::WebDOMEvent& event); 48 49 // Checks to see if a text field is losing focus and inform listeners if 50 // it is. 51 void HandleTextFieldMaybeLosingFocus( 52 const WebKit::WebNode& newly_clicked_node); 53 54 // The last node that was clicked and had focus. 55 WebKit::WebNode last_node_clicked_; 56 57 // Whether the last clicked node had focused before it was clicked. 58 bool was_focused_; 59 60 // The frames we are listening to for mouse events. 61 std::vector<WebKit::WebFrame*> tracked_frames_; 62 63 // The listener getting the actual notifications. 64 PageClickListener* listener_; 65 66 DISALLOW_COPY_AND_ASSIGN(PageClickTracker); 67 }; 68 69 } // namespace autofill 70 71 #endif // COMPONENTS_AUTOFILL_CONTENT_RENDERER_PAGE_CLICK_TRACKER_H_ 72
