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      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 ContentSettingsObserver;
     22 class SkBitmap;
     23 class WebViewColorOverlay;
     24 class WebViewAnimatingOverlay;
     25 
     26 namespace blink {
     27 class WebView;
     28 struct WebWindowFeatures;
     29 }
     30 
     31 namespace safe_browsing {
     32 class PhishingClassifierDelegate;
     33 }
     34 
     35 namespace translate {
     36 class TranslateHelper;
     37 }
     38 
     39 namespace web_cache {
     40 class WebCacheRenderProcessObserver;
     41 }
     42 
     43 // This class holds the Chrome specific parts of RenderView, and has the same
     44 // lifetime.
     45 class ChromeRenderViewObserver : public content::RenderViewObserver {
     46  public:
     47   // translate_helper can be NULL.
     48   ChromeRenderViewObserver(
     49       content::RenderView* render_view,
     50       web_cache::WebCacheRenderProcessObserver*
     51           web_cache_render_process_observer);
     52   virtual ~ChromeRenderViewObserver();
     53 
     54  private:
     55   // RenderViewObserver implementation.
     56   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     57   virtual void DidStartLoading() OVERRIDE;
     58   virtual void DidStopLoading() OVERRIDE;
     59   virtual void DidCommitProvisionalLoad(blink::WebLocalFrame* frame,
     60                                         bool is_new_navigation) OVERRIDE;
     61   virtual void Navigate(const GURL& url) OVERRIDE;
     62 
     63 #if !defined(OS_ANDROID) && !defined(OS_IOS)
     64   void OnWebUIJavaScript(const base::string16& javascript);
     65 #endif
     66 #if defined(ENABLE_EXTENSIONS)
     67   void OnSetVisuallyDeemphasized(bool deemphasized);
     68 #endif
     69 #if defined(OS_ANDROID)
     70   void OnUpdateTopControlsState(content::TopControlsState constraints,
     71                                 content::TopControlsState current,
     72                                 bool animate);
     73   void OnRetrieveMetaTagContent(const GURL& expected_url,
     74                                 const std::string tag_name);
     75 #endif
     76   void OnGetWebApplicationInfo();
     77   void OnSetClientSidePhishingDetection(bool enable_phishing_detection);
     78   void OnSetWindowFeatures(const blink::WebWindowFeatures& window_features);
     79 
     80   void CapturePageInfoLater(bool preliminary_capture,
     81                             base::TimeDelta delay);
     82 
     83   // Captures the thumbnail and text contents for indexing for the given load
     84   // ID.  Kicks off analysis of the captured text.
     85   void CapturePageInfo(bool preliminary_capture);
     86 
     87   // Retrieves the text from the given frame contents, the page text up to the
     88   // maximum amount kMaxIndexChars will be placed into the given buffer.
     89   void CaptureText(blink::WebFrame* frame, base::string16* contents);
     90 
     91   // Determines if a host is in the strict security host set.
     92   bool IsStrictSecurityHost(const std::string& host);
     93 
     94   // Checks if a page contains <meta http-equiv="refresh" ...> tag.
     95   bool HasRefreshMetaTag(blink::WebFrame* frame);
     96 
     97   // Save the JavaScript to preload if a ViewMsg_WebUIJavaScript is received.
     98   std::vector<base::string16> webui_javascript_;
     99 
    100   // Owned by ChromeContentRendererClient and outlive us.
    101   web_cache::WebCacheRenderProcessObserver* web_cache_render_process_observer_;
    102 
    103   // Have the same lifetime as us.
    104   translate::TranslateHelper* translate_helper_;
    105   safe_browsing::PhishingClassifierDelegate* phishing_classifier_;
    106 
    107   // A color page overlay when visually de-emaphasized.
    108   scoped_ptr<WebViewColorOverlay> dimmed_color_overlay_;
    109 
    110   // Used to delay calling CapturePageInfo.
    111   base::Timer capture_timer_;
    112 
    113   DISALLOW_COPY_AND_ASSIGN(ChromeRenderViewObserver);
    114 };
    115 
    116 #endif  // CHROME_RENDERER_CHROME_RENDER_VIEW_OBSERVER_H_
    117