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/memory/linked_ptr.h" 13 #include "base/memory/scoped_ptr.h" 14 #include "base/timer/timer.h" 15 #include "chrome/common/extensions/permissions/api_permission.h" 16 #include "content/public/common/top_controls_state.h" 17 #include "content/public/renderer/render_view_observer.h" 18 #include "third_party/WebKit/public/web/WebPermissionClient.h" 19 #include "ui/gfx/size.h" 20 #include "url/gurl.h" 21 22 class ChromeRenderProcessObserver; 23 class ContentSettingsObserver; 24 class ExternalHostBindings; 25 class SkBitmap; 26 class TranslateHelper; 27 class WebViewColorOverlay; 28 class WebViewAnimatingOverlay; 29 30 namespace extensions { 31 class Dispatcher; 32 class Extension; 33 } 34 35 namespace WebKit { 36 class WebView; 37 struct WebWindowFeatures; 38 } 39 40 namespace safe_browsing { 41 class PhishingClassifierDelegate; 42 } 43 44 // This class holds the Chrome specific parts of RenderView, and has the same 45 // lifetime. 46 class ChromeRenderViewObserver : public content::RenderViewObserver, 47 public WebKit::WebPermissionClient { 48 public: 49 // translate_helper can be NULL. 50 ChromeRenderViewObserver( 51 content::RenderView* render_view, 52 ContentSettingsObserver* content_settings, 53 ChromeRenderProcessObserver* chrome_render_process_observer, 54 extensions::Dispatcher* extension_dispatcher); 55 virtual ~ChromeRenderViewObserver(); 56 57 private: 58 // Holds the information received in OnWebUIJavaScript for later use 59 // to call EvaluateScript() to preload javascript for WebUI tests. 60 struct WebUIJavaScript { 61 string16 frame_xpath; 62 string16 jscript; 63 int id; 64 bool notify_result; 65 }; 66 67 // RenderViewObserver implementation. 68 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 69 virtual void DidStartLoading() OVERRIDE; 70 virtual void DidStopLoading() OVERRIDE; 71 virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame, 72 bool is_new_navigation) OVERRIDE; 73 virtual void DidClearWindowObject(WebKit::WebFrame* frame) OVERRIDE; 74 virtual void DidHandleGestureEvent( 75 const WebKit::WebGestureEvent& event) OVERRIDE; 76 77 // WebKit::WebPermissionClient implementation. 78 virtual bool allowDatabase(WebKit::WebFrame* frame, 79 const WebKit::WebString& name, 80 const WebKit::WebString& display_name, 81 unsigned long estimated_size); 82 virtual bool allowFileSystem(WebKit::WebFrame* frame); 83 virtual bool allowImage(WebKit::WebFrame* frame, 84 bool enabled_per_settings, 85 const WebKit::WebURL& image_url); 86 virtual bool allowIndexedDB(WebKit::WebFrame* frame, 87 const WebKit::WebString& name, 88 const WebKit::WebSecurityOrigin& origin); 89 virtual bool allowPlugins(WebKit::WebFrame* frame, 90 bool enabled_per_settings); 91 virtual bool allowScript(WebKit::WebFrame* frame, 92 bool enabled_per_settings); 93 virtual bool allowScriptFromSource(WebKit::WebFrame* frame, 94 bool enabled_per_settings, 95 const WebKit::WebURL& script_url); 96 virtual bool allowStorage(WebKit::WebFrame* frame, bool local); 97 virtual bool allowReadFromClipboard(WebKit::WebFrame* frame, 98 bool default_value); 99 virtual bool allowWriteToClipboard(WebKit::WebFrame* frame, 100 bool default_value); 101 virtual bool allowWebComponents(const WebKit::WebDocument&, bool); 102 virtual bool allowHTMLNotifications( 103 const WebKit::WebDocument& document); 104 virtual bool allowMutationEvents(const WebKit::WebDocument&, 105 bool default_value); 106 virtual bool allowPushState(const WebKit::WebDocument&); 107 virtual void didNotAllowPlugins(WebKit::WebFrame* frame); 108 virtual void didNotAllowScript(WebKit::WebFrame* frame); 109 virtual bool allowDisplayingInsecureContent( 110 WebKit::WebFrame* frame, 111 bool allowed_per_settings, 112 const WebKit::WebSecurityOrigin& context, 113 const WebKit::WebURL& url); 114 virtual bool allowRunningInsecureContent( 115 WebKit::WebFrame* frame, 116 bool allowed_per_settings, 117 const WebKit::WebSecurityOrigin& context, 118 const WebKit::WebURL& url); 119 virtual void Navigate(const GURL& url) OVERRIDE; 120 121 void OnWebUIJavaScript(const string16& frame_xpath, 122 const string16& jscript, 123 int id, 124 bool notify_result); 125 void OnHandleMessageFromExternalHost(const std::string& message, 126 const std::string& origin, 127 const std::string& target); 128 void OnJavaScriptStressTestControl(int cmd, int param); 129 void OnSetIsPrerendering(bool is_prerendering); 130 void OnSetAllowDisplayingInsecureContent(bool allow); 131 void OnSetAllowRunningInsecureContent(bool allow); 132 void OnSetClientSidePhishingDetection(bool enable_phishing_detection); 133 void OnSetVisuallyDeemphasized(bool deemphasized); 134 void OnRequestThumbnailForContextNode(int thumbnail_min_area_pixels, 135 gfx::Size thumbnail_max_size_pixels); 136 void OnStartFrameSniffer(const string16& frame_name); 137 void OnGetFPS(); 138 void OnAddStrictSecurityHost(const std::string& host); 139 void OnNPAPINotSupported(); 140 #if defined(OS_ANDROID) 141 void OnUpdateTopControlsState(content::TopControlsState constraints, 142 content::TopControlsState current, 143 bool animate); 144 #endif 145 void OnSetWindowFeatures(const WebKit::WebWindowFeatures& window_features); 146 147 void CapturePageInfoLater(int page_id, 148 bool preliminary_capture, 149 base::TimeDelta delay); 150 151 // Captures the thumbnail and text contents for indexing for the given load 152 // ID. Kicks off analysis of the captured text. 153 void CapturePageInfo(int page_id, bool preliminary_capture); 154 155 // Retrieves the text from the given frame contents, the page text up to the 156 // maximum amount kMaxIndexChars will be placed into the given buffer. 157 void CaptureText(WebKit::WebFrame* frame, string16* contents); 158 159 ExternalHostBindings* GetExternalHostBindings(); 160 161 // Determines if a host is in the strict security host set. 162 bool IsStrictSecurityHost(const std::string& host); 163 164 // If |origin| corresponds to an installed extension, returns that extension. 165 // Otherwise returns NULL. 166 const extensions::Extension* GetExtension( 167 const WebKit::WebSecurityOrigin& origin) const; 168 169 // Checks if a page contains <meta http-equiv="refresh" ...> tag. 170 bool HasRefreshMetaTag(WebKit::WebFrame* frame); 171 172 // Save the JavaScript to preload if a ViewMsg_WebUIJavaScript is received. 173 scoped_ptr<WebUIJavaScript> webui_javascript_; 174 175 // Owned by ChromeContentRendererClient and outlive us. 176 ChromeRenderProcessObserver* chrome_render_process_observer_; 177 extensions::Dispatcher* extension_dispatcher_; 178 179 // Have the same lifetime as us. 180 ContentSettingsObserver* content_settings_; 181 TranslateHelper* translate_helper_; 182 safe_browsing::PhishingClassifierDelegate* phishing_classifier_; 183 184 // Page_id from the last page we indexed. This prevents us from indexing the 185 // same page twice in a row. 186 int32 last_indexed_page_id_; 187 // The toplevel URL that was last indexed. This is used together with the 188 // page id to decide whether to reindex in certain cases like history 189 // replacement. 190 GURL last_indexed_url_; 191 192 // Insecure content may be permitted for the duration of this render view. 193 bool allow_displaying_insecure_content_; 194 bool allow_running_insecure_content_; 195 std::set<std::string> strict_security_hosts_; 196 197 // External host exposed through automation controller. 198 scoped_ptr<ExternalHostBindings> external_host_bindings_; 199 200 // A color page overlay when visually de-emaphasized. 201 scoped_ptr<WebViewColorOverlay> dimmed_color_overlay_; 202 203 // Used to delay calling CapturePageInfo. 204 base::Timer capture_timer_; 205 206 DISALLOW_COPY_AND_ASSIGN(ChromeRenderViewObserver); 207 }; 208 209 #endif // CHROME_RENDERER_CHROME_RENDER_VIEW_OBSERVER_H_ 210
