src/content/renderer/web_preferences.cc

   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 #include "content/public/renderer/web_preferences.h"
   6
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "third_party/WebKit/public/platform/WebString.h"
   9 #include "third_party/WebKit/public/platform/WebURL.h"
  10 #include "third_party/WebKit/public/web/WebKit.h"
  11 #include "third_party/WebKit/public/web/WebNetworkStateNotifier.h"
  12 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  13 #include "third_party/WebKit/public/web/WebSettings.h"
  14 #include "third_party/WebKit/public/web/WebView.h"
  15 #include "third_party/icu/source/common/unicode/uchar.h"
  16 #include "third_party/icu/source/common/unicode/uscript.h"
  17 #include "webkit/common/webpreferences.h"
  18
  19 using blink::WebNetworkStateNotifier;
  20 using blink::WebRuntimeFeatures;
  21 using blink::WebSettings;
  22 using blink::WebString;
  23 using blink::WebURL;
  24 using blink::WebView;
  25
  26 namespace content {
  27
  28 namespace {
  29
  30 typedef void (*SetFontFamilyWrapper)(blink::WebSettings*,
  31                                      const base::string16&,
  32                                      UScriptCode);
  33
  34 void setStandardFontFamilyWrapper(WebSettings* settings,
  35                                   const base::string16& font,
  36                                   UScriptCode script) {
  37   settings->setStandardFontFamily(font, script);
  38 }
  39
  40 void setFixedFontFamilyWrapper(WebSettings* settings,
  41                                const base::string16& font,
  42                                UScriptCode script) {
  43   settings->setFixedFontFamily(font, script);
  44 }
  45
  46 void setSerifFontFamilyWrapper(WebSettings* settings,
  47                                const base::string16& font,
  48                                UScriptCode script) {
  49   settings->setSerifFontFamily(font, script);
  50 }
  51
  52 void setSansSerifFontFamilyWrapper(WebSettings* settings,
  53                                    const base::string16& font,
  54                                    UScriptCode script) {
  55   settings->setSansSerifFontFamily(font, script);
  56 }
  57
  58 void setCursiveFontFamilyWrapper(WebSettings* settings,
  59                                  const base::string16& font,
  60                                  UScriptCode script) {
  61   settings->setCursiveFontFamily(font, script);
  62 }
  63
  64 void setFantasyFontFamilyWrapper(WebSettings* settings,
  65                                  const base::string16& font,
  66                                  UScriptCode script) {
  67   settings->setFantasyFontFamily(font, script);
  68 }
  69
  70 void setPictographFontFamilyWrapper(WebSettings* settings,
  71                                     const base::string16& font,
  72                                     UScriptCode script) {
  73   settings->setPictographFontFamily(font, script);
  74 }
  75
  76 // If |scriptCode| is a member of a family of "similar" script codes, returns
  77 // the script code in that family that is used by WebKit for font selection
  78 // purposes.  For example, USCRIPT_KATAKANA_OR_HIRAGANA and USCRIPT_JAPANESE are
  79 // considered equivalent for the purposes of font selection.  WebKit uses the
  80 // script code USCRIPT_KATAKANA_OR_HIRAGANA.  So, if |scriptCode| is
  81 // USCRIPT_JAPANESE, the function returns USCRIPT_KATAKANA_OR_HIRAGANA.  WebKit
  82 // uses different scripts than the ones in Chrome pref names because the version
  83 // of ICU included on certain ports does not have some of the newer scripts.  If
  84 // |scriptCode| is not a member of such a family, returns |scriptCode|.
  85 UScriptCode GetScriptForWebSettings(UScriptCode scriptCode) {
  86   switch (scriptCode) {
  87   case USCRIPT_HIRAGANA:
  88   case USCRIPT_KATAKANA:
  89   case USCRIPT_JAPANESE:
  90     return USCRIPT_KATAKANA_OR_HIRAGANA;
  91   case USCRIPT_KOREAN:
  92     return USCRIPT_HANGUL;
  93   default:
  94     return scriptCode;
  95   }
  96 }
  97
  98 void ApplyFontsFromMap(const webkit_glue::ScriptFontFamilyMap& map,
  99                        SetFontFamilyWrapper setter,
 100                        WebSettings* settings) {
 101   for (webkit_glue::ScriptFontFamilyMap::const_iterator it = map.begin();
 102        it != map.end();
 103        ++it) {
 104     int32 script = u_getPropertyValueEnum(UCHAR_SCRIPT, (it->first).c_str());
 105     if (script >= 0 && script < USCRIPT_CODE_LIMIT) {
 106       UScriptCode code = static_cast<UScriptCode>(script);
 107       (*setter)(settings, it->second, GetScriptForWebSettings(code));
 108     }
 109   }
 110 }
 111
 112 }  // namespace
 113
 114 void ApplyWebPreferences(const WebPreferences& prefs, WebView* web_view) {
 115   WebSettings* settings = web_view->settings();
 116   ApplyFontsFromMap(prefs.standard_font_family_map,
 117                     setStandardFontFamilyWrapper, settings);
 118   ApplyFontsFromMap(prefs.fixed_font_family_map,
 119                     setFixedFontFamilyWrapper, settings);
 120   ApplyFontsFromMap(prefs.serif_font_family_map,
 121                     setSerifFontFamilyWrapper, settings);
 122   ApplyFontsFromMap(prefs.sans_serif_font_family_map,
 123                     setSansSerifFontFamilyWrapper, settings);
 124   ApplyFontsFromMap(prefs.cursive_font_family_map,
 125                     setCursiveFontFamilyWrapper, settings);
 126   ApplyFontsFromMap(prefs.fantasy_font_family_map,
 127                     setFantasyFontFamilyWrapper, settings);
 128   ApplyFontsFromMap(prefs.pictograph_font_family_map,
 129                     setPictographFontFamilyWrapper, settings);
 130   settings->setDefaultFontSize(prefs.default_font_size);
 131   settings->setDefaultFixedFontSize(prefs.default_fixed_font_size);
 132   settings->setMinimumFontSize(prefs.minimum_font_size);
 133   settings->setMinimumLogicalFontSize(prefs.minimum_logical_font_size);
 134   settings->setDefaultTextEncodingName(
 135       base::ASCIIToUTF16(prefs.default_encoding));
 136   settings->setJavaScriptEnabled(prefs.javascript_enabled);
 137   settings->setWebSecurityEnabled(prefs.web_security_enabled);
 138   settings->setJavaScriptCanOpenWindowsAutomatically(
 139       prefs.javascript_can_open_windows_automatically);
 140   settings->setLoadsImagesAutomatically(prefs.loads_images_automatically);
 141   settings->setImagesEnabled(prefs.images_enabled);
 142   settings->setPluginsEnabled(prefs.plugins_enabled);
 143   settings->setDOMPasteAllowed(prefs.dom_paste_enabled);
 144   settings->setNeedsSiteSpecificQuirks(prefs.site_specific_quirks_enabled);
 145   settings->setShrinksStandaloneImagesToFit(
 146       prefs.shrinks_standalone_images_to_fit);
 147   settings->setUsesEncodingDetector(prefs.uses_universal_detector);
 148   settings->setTextAreasAreResizable(prefs.text_areas_are_resizable);
 149   settings->setAllowScriptsToCloseWindows(prefs.allow_scripts_to_close_windows);
 150   settings->setDownloadableBinaryFontsEnabled(prefs.remote_fonts_enabled);
 151   settings->setJavaScriptCanAccessClipboard(
 152       prefs.javascript_can_access_clipboard);
 153   WebRuntimeFeatures::enableXSLT(prefs.xslt_enabled);
 154   settings->setXSSAuditorEnabled(prefs.xss_auditor_enabled);
 155   settings->setDNSPrefetchingEnabled(prefs.dns_prefetching_enabled);
 156   settings->setLocalStorageEnabled(prefs.local_storage_enabled);
 157   settings->setSyncXHRInDocumentsEnabled(prefs.sync_xhr_in_documents_enabled);
 158   WebRuntimeFeatures::enableDatabase(prefs.databases_enabled);
 159   settings->setOfflineWebApplicationCacheEnabled(
 160       prefs.application_cache_enabled);
 161   settings->setCaretBrowsingEnabled(prefs.caret_browsing_enabled);
 162   settings->setHyperlinkAuditingEnabled(prefs.hyperlink_auditing_enabled);
 163   settings->setCookieEnabled(prefs.cookie_enabled);
 164   settings->setNavigateOnDragDrop(prefs.navigate_on_drag_drop);
 165
 166   // This setting affects the behavior of links in an editable region:
 167   // clicking the link should select it rather than navigate to it.
 168   // Safari uses the same default. It is unlikley an embedder would want to
 169   // change this, since it would break existing rich text editors.
 170   settings->setEditableLinkBehaviorNeverLive();
 171
 172   settings->setJavaEnabled(prefs.java_enabled);
 173
 174   // By default, allow_universal_access_from_file_urls is set to false and thus
 175   // we mitigate attacks from local HTML files by not granting file:// URLs
 176   // universal access. Only test shell will enable this.
 177   settings->setAllowUniversalAccessFromFileURLs(
 178       prefs.allow_universal_access_from_file_urls);
 179   settings->setAllowFileAccessFromFileURLs(
 180       prefs.allow_file_access_from_file_urls);
 181
 182   // Enable the web audio API if requested on the command line.
 183   settings->setWebAudioEnabled(prefs.webaudio_enabled);
 184
 185   // Enable experimental WebGL support if requested on command line
 186   // and support is compiled in.
 187   settings->setExperimentalWebGLEnabled(prefs.experimental_webgl_enabled);
 188
 189   // Disable GL multisampling if requested on command line.
 190   settings->setOpenGLMultisamplingEnabled(prefs.gl_multisampling_enabled);
 191
 192   // Enable privileged WebGL extensions for Chrome extensions or if requested
 193   // on command line.
 194   settings->setPrivilegedWebGLExtensionsEnabled(
 195       prefs.privileged_webgl_extensions_enabled);
 196
 197   // Enable WebGL errors to the JS console if requested.
 198   settings->setWebGLErrorsToConsoleEnabled(
 199       prefs.webgl_errors_to_console_enabled);
 200
 201   // Uses the mock theme engine for scrollbars.
 202   settings->setMockScrollbarsEnabled(prefs.mock_scrollbars_enabled);
 203
 204   settings->setLayerSquashingEnabled(prefs.layer_squashing_enabled);
 205
 206   settings->setThreadedHTMLParser(prefs.threaded_html_parser);
 207
 208   // Display visualization of what has changed on the screen using an
 209   // overlay of rects, if requested on the command line.
 210   settings->setShowPaintRects(prefs.show_paint_rects);
 211
 212   // Enable gpu-accelerated compositing if requested on the command line.
 213   settings->setAcceleratedCompositingEnabled(
 214       prefs.accelerated_compositing_enabled);
 215
 216   // Enable gpu-accelerated 2d canvas if requested on the command line.
 217   settings->setAccelerated2dCanvasEnabled(prefs.accelerated_2d_canvas_enabled);
 218
 219   settings->setMinimumAccelerated2dCanvasSize(
 220       prefs.minimum_accelerated_2d_canvas_size);
 221
 222   // Disable antialiasing for 2d canvas if requested on the command line.
 223   settings->setAntialiased2dCanvasEnabled(
 224       !prefs.antialiased_2d_canvas_disabled);
 225
 226   // Set MSAA sample count for 2d canvas if requested on the command line (or
 227   // default value if not).
 228   settings->setAccelerated2dCanvasMSAASampleCount(
 229       prefs.accelerated_2d_canvas_msaa_sample_count);
 230
 231   // Enable deferred filter rendering if requested on the command line.
 232   settings->setDeferredFiltersEnabled(prefs.deferred_filters_enabled);
 233
 234   // Enable gesture tap highlight if requested on the command line.
 235   settings->setGestureTapHighlightEnabled(prefs.gesture_tap_highlight_enabled);
 236
 237   // Enabling accelerated layers from the command line enabled accelerated
 238   // 3D CSS, Video, and Animations.
 239   settings->setAcceleratedCompositingFor3DTransformsEnabled(
 240       prefs.accelerated_compositing_for_3d_transforms_enabled);
 241   settings->setAcceleratedCompositingForVideoEnabled(
 242       prefs.accelerated_compositing_for_video_enabled);
 243   settings->setAcceleratedCompositingForAnimationEnabled(
 244       prefs.accelerated_compositing_for_animation_enabled);
 245
 246   // Enabling accelerated plugins if specified from the command line.
 247   settings->setAcceleratedCompositingForPluginsEnabled(
 248       prefs.accelerated_compositing_for_plugins_enabled);
 249
 250   // WebGL and accelerated 2D canvas are always gpu composited.
 251   settings->setAcceleratedCompositingForCanvasEnabled(
 252       prefs.experimental_webgl_enabled || prefs.accelerated_2d_canvas_enabled);
 253
 254   settings->setAsynchronousSpellCheckingEnabled(
 255       prefs.asynchronous_spell_checking_enabled);
 256   settings->setUnifiedTextCheckerEnabled(prefs.unified_textchecker_enabled);
 257
 258   for (webkit_glue::WebInspectorPreferences::const_iterator it =
 259            prefs.inspector_settings.begin();
 260        it != prefs.inspector_settings.end();
 261        ++it) {
 262     web_view->setInspectorSetting(WebString::fromUTF8(it->first),
 263                                   WebString::fromUTF8(it->second));
 264   }
 265
 266   // Tabs to link is not part of the settings. WebCore calls
 267   // ChromeClient::tabsToLinks which is part of the glue code.
 268   web_view->setTabsToLinks(prefs.tabs_to_links);
 269
 270   // TODO(scheib): crbug.com/344002 Remove FullScreenEnabled from Blink
 271   settings->setFullScreenEnabled(true);
 272   settings->setAllowDisplayOfInsecureContent(
 273       prefs.allow_displaying_insecure_content);
 274   settings->setAllowRunningOfInsecureContent(
 275       prefs.allow_running_insecure_content);
 276   settings->setPasswordEchoEnabled(prefs.password_echo_enabled);
 277   settings->setShouldPrintBackgrounds(prefs.should_print_backgrounds);
 278   settings->setShouldClearDocumentBackground(
 279       prefs.should_clear_document_background);
 280   settings->setEnableScrollAnimator(prefs.enable_scroll_animator);
 281   settings->setVisualWordMovementEnabled(prefs.visual_word_movement_enabled);
 282
 283   settings->setRegionBasedColumnsEnabled(prefs.region_based_columns_enabled);
 284
 285   WebRuntimeFeatures::enableLazyLayout(prefs.lazy_layout_enabled);
 286   WebRuntimeFeatures::enableTouch(prefs.touch_enabled);
 287   settings->setMaxTouchPoints(prefs.pointer_events_max_touch_points);
 288   settings->setDeviceSupportsTouch(prefs.device_supports_touch);
 289   settings->setDeviceSupportsMouse(prefs.device_supports_mouse);
 290   settings->setEnableTouchAdjustment(prefs.touch_adjustment_enabled);
 291
 292   settings->setFixedPositionCreatesStackingContext(
 293       prefs.fixed_position_creates_stacking_context);
 294
 295   settings->setDeferredImageDecodingEnabled(
 296       prefs.deferred_image_decoding_enabled);
 297   settings->setShouldRespectImageOrientation(
 298       prefs.should_respect_image_orientation);
 299
 300   settings->setUnsafePluginPastingEnabled(false);
 301   settings->setEditingBehavior(
 302       static_cast<WebSettings::EditingBehavior>(prefs.editing_behavior));
 303
 304   settings->setSupportsMultipleWindows(prefs.supports_multiple_windows);
 305
 306   settings->setViewportEnabled(prefs.viewport_enabled);
 307   settings->setLoadWithOverviewMode(prefs.initialize_at_minimum_page_scale);
 308   settings->setViewportMetaEnabled(prefs.viewport_meta_enabled);
 309   settings->setMainFrameResizesAreOrientationChanges(
 310       prefs.main_frame_resizes_are_orientation_changes);
 311
 312   settings->setSmartInsertDeleteEnabled(prefs.smart_insert_delete_enabled);
 313
 314   settings->setSpatialNavigationEnabled(prefs.spatial_navigation_enabled);
 315
 316   settings->setSelectionIncludesAltImageText(true);
 317
 318   // Crosswalk shared settings:
 319   settings->setLayoutFallbackWidth(0);
 320   settings->setMainFrameClipsContent(false);
 321
 322 #if defined(OS_TIZEN)
 323   // Scrollbars should not be stylable.
 324   settings->setAllowCustomScrollbarInMainFrame(false);
 325
 326   // IME support
 327   settings->setAutoZoomFocusedNodeToLegibleScale(true);
 328
 329   // Enable double tap to zoom when zoomable.
 330   settings->setDoubleTapToZoomEnabled(true);
 331 #endif
 332
 333 #if defined(OS_ANDROID)
 334   settings->setAllowCustomScrollbarInMainFrame(false);
 335   settings->setTextAutosizingEnabled(prefs.text_autosizing_enabled);
 336   settings->setAccessibilityFontScaleFactor(prefs.font_scale_factor);
 337   settings->setDeviceScaleAdjustment(prefs.device_scale_adjustment);
 338   web_view->setIgnoreViewportTagScaleLimits(prefs.force_enable_zoom);
 339   settings->setAutoZoomFocusedNodeToLegibleScale(true);
 340   settings->setDoubleTapToZoomEnabled(prefs.double_tap_to_zoom_enabled);
 341   settings->setMediaPlaybackRequiresUserGesture(
 342       prefs.user_gesture_required_for_media_playback);
 343   settings->setMediaFullscreenRequiresUserGesture(
 344       prefs.user_gesture_required_for_media_fullscreen);
 345   settings->setDefaultVideoPosterURL(
 346         base::ASCIIToUTF16(prefs.default_video_poster_url.spec()));
 347   settings->setSupportDeprecatedTargetDensityDPI(
 348       prefs.support_deprecated_target_density_dpi);
 349   settings->setUseLegacyBackgroundSizeShorthandBehavior(
 350       prefs.use_legacy_background_size_shorthand_behavior);
 351   settings->setWideViewportQuirkEnabled(prefs.wide_viewport_quirk);
 352   settings->setUseWideViewport(prefs.use_wide_viewport);
 353   settings->setViewportMetaLayoutSizeQuirk(
 354       prefs.viewport_meta_layout_size_quirk);
 355   settings->setViewportMetaMergeContentQuirk(
 356       prefs.viewport_meta_merge_content_quirk);
 357   settings->setViewportMetaNonUserScalableQuirk(
 358       prefs.viewport_meta_non_user_scalable_quirk);
 359   settings->setViewportMetaZeroValuesQuirk(
 360       prefs.viewport_meta_zero_values_quirk);
 361   settings->setClobberUserAgentInitialScaleQuirk(
 362       prefs.clobber_user_agent_initial_scale_quirk);
 363   settings->setIgnoreMainFrameOverflowHiddenQuirk(
 364       prefs.ignore_main_frame_overflow_hidden_quirk);
 365   settings->setReportScreenSizeInPhysicalPixelsQuirk(
 366       prefs.report_screen_size_in_physical_pixels_quirk);
 367   settings->setMainFrameClipsContent(false);
 368   settings->setShrinksStandaloneImagesToFit(false);
 369 #endif
 370
 371   WebNetworkStateNotifier::setOnLine(prefs.is_online);
 372   settings->setExperimentalWebSocketEnabled(
 373       prefs.experimental_websocket_enabled);
 374   settings->setPinchVirtualViewportEnabled(
 375       prefs.pinch_virtual_viewport_enabled);
 376
 377   settings->setPinchOverlayScrollbarThickness(
 378       prefs.pinch_overlay_scrollbar_thickness);
 379   settings->setUseSolidColorScrollbars(prefs.use_solid_color_scrollbars);
 380   settings->setCompositorTouchHitTesting(prefs.compositor_touch_hit_testing);
 381 }
 382
 383 }  // namespace content