chrome/renderer/chrome_render_view_observer.h

   1 // Copyright (c) 2012 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 CHROME_RENDERER_CHROME_RENDER_VIEW_OBSERVER_H_
   6 #define CHROME_RENDERER_CHROME_RENDER_VIEW_OBSERVER_H_
   7
   8 #include <set>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/memory/linked_ptr.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/timer/timer.h"
  16 #include "content/public/common/top_controls_state.h"
  17 #include "content/public/renderer/render_view_observer.h"
  18 #include "ui/gfx/size.h"
  19 #include "url/gurl.h"
  20
  21 class ChromeRenderProcessObserver;
  22 class ContentSettingsObserver;
  23 class SkBitmap;
  24 class TranslateHelper;
  25 class WebViewColorOverlay;
  26 class WebViewAnimatingOverlay;
  27
  28 namespace blink {
  29 class WebView;
  30 struct WebWindowFeatures;
  31 }
  32
  33 namespace safe_browsing {
  34 class PhishingClassifierDelegate;
  35 }
  36
  37 // This class holds the Chrome specific parts of RenderView, and has the same
  38 // lifetime.
  39 class ChromeRenderViewObserver : public content::RenderViewObserver {
  40  public:
  41   // translate_helper can be NULL.
  42   ChromeRenderViewObserver(
  43       content::RenderView* render_view,
  44       ChromeRenderProcessObserver* chrome_render_process_observer);
  45   virtual ~ChromeRenderViewObserver();
  46
  47  private:
  48   // Holds the information received in OnWebUIJavaScript for later use
  49   // to call EvaluateScript() to preload javascript for WebUI tests.
  50   struct WebUIJavaScript {
  51     base::string16 frame_xpath;
  52     base::string16 jscript;
  53     int id;
  54     bool notify_result;
  55   };
  56
  57   // RenderViewObserver implementation.
  58   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  59   virtual void DidStartLoading() OVERRIDE;
  60   virtual void DidStopLoading() OVERRIDE;
  61   virtual void DidCommitProvisionalLoad(blink::WebFrame* frame,
  62                                         bool is_new_navigation) OVERRIDE;
  63   virtual void DetailedConsoleMessageAdded(const base::string16& message,
  64                                            const base::string16& source,
  65                                            const base::string16& stack_trace,
  66                                            int32 line_number,
  67                                            int32 severity_level) OVERRIDE;
  68   virtual void Navigate(const GURL& url) OVERRIDE;
  69
  70   void OnWebUIJavaScript(const base::string16& frame_xpath,
  71                          const base::string16& jscript,
  72                          int id,
  73                          bool notify_result);
  74   void OnJavaScriptStressTestControl(int cmd, int param);
  75   void OnSetClientSidePhishingDetection(bool enable_phishing_detection);
  76   void OnSetVisuallyDeemphasized(bool deemphasized);
  77   void OnRequestThumbnailForContextNode(int thumbnail_min_area_pixels,
  78                                         gfx::Size thumbnail_max_size_pixels);
  79   void OnGetFPS();
  80 #if defined(OS_ANDROID)
  81   void OnUpdateTopControlsState(content::TopControlsState constraints,
  82                                 content::TopControlsState current,
  83                                 bool animate);
  84   void OnRetrieveWebappInformation(const GURL& expected_url);
  85 #endif
  86   void OnSetWindowFeatures(const blink::WebWindowFeatures& window_features);
  87
  88   void CapturePageInfoLater(int page_id,
  89                             bool preliminary_capture,
  90                             base::TimeDelta delay);
  91
  92   // Captures the thumbnail and text contents for indexing for the given load
  93   // ID.  Kicks off analysis of the captured text.
  94   void CapturePageInfo(int page_id, bool preliminary_capture);
  95
  96   // Retrieves the text from the given frame contents, the page text up to the
  97   // maximum amount kMaxIndexChars will be placed into the given buffer.
  98   void CaptureText(blink::WebFrame* frame, base::string16* contents);
  99
 100   // Determines if a host is in the strict security host set.
 101   bool IsStrictSecurityHost(const std::string& host);
 102
 103   // Checks if a page contains <meta http-equiv="refresh" ...> tag.
 104   bool HasRefreshMetaTag(blink::WebFrame* frame);
 105
 106   // Save the JavaScript to preload if a ViewMsg_WebUIJavaScript is received.
 107   scoped_ptr<WebUIJavaScript> webui_javascript_;
 108
 109   // Owned by ChromeContentRendererClient and outlive us.
 110   ChromeRenderProcessObserver* chrome_render_process_observer_;
 111
 112   // Have the same lifetime as us.
 113   TranslateHelper* translate_helper_;
 114   safe_browsing::PhishingClassifierDelegate* phishing_classifier_;
 115
 116   // Page_id from the last page we indexed. This prevents us from indexing the
 117   // same page twice in a row.
 118   int32 last_indexed_page_id_;
 119   // The toplevel URL that was last indexed.  This is used together with the
 120   // page id to decide whether to reindex in certain cases like history
 121   // replacement.
 122   GURL last_indexed_url_;
 123
 124   // A color page overlay when visually de-emaphasized.
 125   scoped_ptr<WebViewColorOverlay> dimmed_color_overlay_;
 126
 127   // Used to delay calling CapturePageInfo.
 128   base::Timer capture_timer_;
 129
 130   DISALLOW_COPY_AND_ASSIGN(ChromeRenderViewObserver);
 131 };
 132
 133 #endif  // CHROME_RENDERER_CHROME_RENDER_VIEW_OBSERVER_H_