android_webview/native/aw_settings.cc

   1 // Copyright (c) 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 "android_webview/native/aw_settings.h"
   6
   7 #include "android_webview/browser/renderer_host/aw_render_view_host_ext.h"
   8 #include "android_webview/native/aw_contents.h"
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_string.h"
  11 #include "base/command_line.h"
  12 #include "base/supports_user_data.h"
  13 #include "content/public/browser/navigation_controller.h"
  14 #include "content/public/browser/navigation_entry.h"
  15 #include "content/public/browser/render_view_host.h"
  16 #include "content/public/browser/web_contents.h"
  17 #include "content/public/common/content_client.h"
  18 #include "content/public/common/content_switches.h"
  19 #include "jni/AwSettings_jni.h"
  20 #include "webkit/common/user_agent/user_agent.h"
  21 #include "webkit/common/webpreferences.h"
  22
  23 using base::android::ConvertJavaStringToUTF16;
  24 using base::android::ConvertUTF8ToJavaString;
  25 using base::android::ScopedJavaLocalRef;
  26
  27 namespace android_webview {
  28
  29 const void* kAwSettingsUserDataKey = &kAwSettingsUserDataKey;
  30
  31 class AwSettingsUserData : public base::SupportsUserData::Data {
  32  public:
  33   AwSettingsUserData(AwSettings* ptr) : settings_(ptr) {}
  34
  35   static AwSettings* GetSettings(content::WebContents* web_contents) {
  36     if (!web_contents)
  37       return NULL;
  38     AwSettingsUserData* data = reinterpret_cast<AwSettingsUserData*>(
  39         web_contents->GetUserData(kAwSettingsUserDataKey));
  40     return data ? data->settings_ : NULL;
  41   }
  42
  43  private:
  44   AwSettings* settings_;
  45 };
  46
  47 AwSettings::AwSettings(JNIEnv* env, jobject obj, jlong web_contents)
  48     : WebContentsObserver(
  49           reinterpret_cast<content::WebContents*>(web_contents)),
  50       accelerated_2d_canvas_disabled_by_switch_(
  51           CommandLine::ForCurrentProcess()->HasSwitch(
  52               switches::kDisableAccelerated2dCanvas)),
  53       aw_settings_(env, obj) {
  54   reinterpret_cast<content::WebContents*>(web_contents)->
  55       SetUserData(kAwSettingsUserDataKey, new AwSettingsUserData(this));
  56 }
  57
  58 AwSettings::~AwSettings() {
  59   if (web_contents()) {
  60     web_contents()->SetUserData(kAwSettingsUserDataKey, NULL);
  61   }
  62
  63   JNIEnv* env = base::android::AttachCurrentThread();
  64   ScopedJavaLocalRef<jobject> scoped_obj = aw_settings_.get(env);
  65   jobject obj = scoped_obj.obj();
  66   if (!obj) return;
  67   Java_AwSettings_nativeAwSettingsGone(env, obj,
  68                                        reinterpret_cast<intptr_t>(this));
  69 }
  70
  71 void AwSettings::Destroy(JNIEnv* env, jobject obj) {
  72   delete this;
  73 }
  74
  75 AwSettings* AwSettings::FromWebContents(content::WebContents* web_contents) {
  76   return AwSettingsUserData::GetSettings(web_contents);
  77 }
  78
  79 AwRenderViewHostExt* AwSettings::GetAwRenderViewHostExt() {
  80   if (!web_contents()) return NULL;
  81   AwContents* contents = AwContents::FromWebContents(web_contents());
  82   if (!contents) return NULL;
  83   return contents->render_view_host_ext();
  84 }
  85
  86 void AwSettings::ResetScrollAndScaleState(JNIEnv* env, jobject obj) {
  87   AwRenderViewHostExt* rvhe = GetAwRenderViewHostExt();
  88   if (!rvhe) return;
  89   rvhe->ResetScrollAndScaleState();
  90 }
  91
  92 void AwSettings::UpdateEverything() {
  93   JNIEnv* env = base::android::AttachCurrentThread();
  94   CHECK(env);
  95   ScopedJavaLocalRef<jobject> scoped_obj = aw_settings_.get(env);
  96   jobject obj = scoped_obj.obj();
  97   if (!obj) return;
  98   // Grab the lock and call UpdateEverythingLocked.
  99   Java_AwSettings_updateEverything(env, obj);
 100 }
 101
 102 void AwSettings::UpdateEverythingLocked(JNIEnv* env, jobject obj) {
 103   UpdateInitialPageScaleLocked(env, obj);
 104   UpdateWebkitPreferencesLocked(env, obj);
 105   UpdateUserAgentLocked(env, obj);
 106   ResetScrollAndScaleState(env, obj);
 107   UpdateFormDataPreferencesLocked(env, obj);
 108 }
 109
 110 void AwSettings::UpdateUserAgentLocked(JNIEnv* env, jobject obj) {
 111   if (!web_contents()) return;
 112
 113   ScopedJavaLocalRef<jstring> str =
 114       Java_AwSettings_getUserAgentLocked(env, obj);
 115   bool ua_overidden = str.obj() != NULL;
 116
 117   if (ua_overidden) {
 118     std::string override = base::android::ConvertJavaStringToUTF8(str);
 119     web_contents()->SetUserAgentOverride(override);
 120   }
 121
 122   const content::NavigationController& controller =
 123       web_contents()->GetController();
 124   for (int i = 0; i < controller.GetEntryCount(); ++i)
 125     controller.GetEntryAtIndex(i)->SetIsOverridingUserAgent(ua_overidden);
 126 }
 127
 128 void AwSettings::UpdateWebkitPreferencesLocked(JNIEnv* env, jobject obj) {
 129   if (!web_contents()) return;
 130   AwRenderViewHostExt* render_view_host_ext = GetAwRenderViewHostExt();
 131   if (!render_view_host_ext) return;
 132
 133   content::RenderViewHost* render_view_host =
 134       web_contents()->GetRenderViewHost();
 135   if (!render_view_host) return;
 136   render_view_host->UpdateWebkitPreferences(
 137       render_view_host->GetWebkitPreferences());
 138 }
 139
 140 void AwSettings::UpdateInitialPageScaleLocked(JNIEnv* env, jobject obj) {
 141   AwRenderViewHostExt* rvhe = GetAwRenderViewHostExt();
 142   if (!rvhe) return;
 143
 144   float initial_page_scale_percent =
 145       Java_AwSettings_getInitialPageScalePercentLocked(env, obj);
 146   if (initial_page_scale_percent == 0) {
 147     rvhe->SetInitialPageScale(-1);
 148   } else {
 149     float dip_scale = static_cast<float>(
 150         Java_AwSettings_getDIPScaleLocked(env, obj));
 151     rvhe->SetInitialPageScale(initial_page_scale_percent / dip_scale / 100.0f);
 152   }
 153 }
 154
 155 void AwSettings::UpdateFormDataPreferencesLocked(JNIEnv* env, jobject obj) {
 156   if (!web_contents()) return;
 157   AwContents* contents = AwContents::FromWebContents(web_contents());
 158   if (!contents) return;
 159
 160   contents->SetSaveFormData(Java_AwSettings_getSaveFormDataLocked(env, obj));
 161 }
 162
 163 void AwSettings::RenderViewCreated(content::RenderViewHost* render_view_host) {
 164   // A single WebContents can normally have 0 to many RenderViewHost instances
 165   // associated with it.
 166   // This is important since there is only one RenderViewHostExt instance per
 167   // WebContents (and not one RVHExt per RVH, as you might expect) and updating
 168   // settings via RVHExt only ever updates the 'current' RVH.
 169   // In android_webview we don't swap out the RVH on cross-site navigations, so
 170   // we shouldn't have to deal with the multiple RVH per WebContents case. That
 171   // in turn means that the newly created RVH is always the 'current' RVH
 172   // (since we only ever go from 0 to 1 RVH instances) and hence the DCHECK.
 173   DCHECK(web_contents()->GetRenderViewHost() == render_view_host);
 174
 175   UpdateEverything();
 176 }
 177
 178 void AwSettings::WebContentsDestroyed(content::WebContents* web_contents) {
 179   delete this;
 180 }
 181
 182 // static
 183 void AwSettings::PopulateFixedPreferences(WebPreferences* web_prefs) {
 184   web_prefs->shrinks_standalone_images_to_fit = false;
 185   web_prefs->should_clear_document_background = false;
 186 }
 187
 188 void AwSettings::PopulateWebPreferences(WebPreferences* web_prefs) {
 189   JNIEnv* env = base::android::AttachCurrentThread();
 190   CHECK(env);
 191
 192   AwRenderViewHostExt* render_view_host_ext = GetAwRenderViewHostExt();
 193   if (!render_view_host_ext) return;
 194
 195   ScopedJavaLocalRef<jobject> scoped_obj = aw_settings_.get(env);
 196   jobject obj = scoped_obj.obj();
 197   if (!obj) return;
 198
 199   PopulateFixedPreferences(web_prefs);
 200
 201   web_prefs->text_autosizing_enabled =
 202       Java_AwSettings_getTextAutosizingEnabledLocked(env, obj);
 203
 204   int text_size_percent = Java_AwSettings_getTextSizePercentLocked(env, obj);
 205   if (web_prefs->text_autosizing_enabled) {
 206     web_prefs->font_scale_factor = text_size_percent / 100.0f;
 207     web_prefs->force_enable_zoom = text_size_percent >= 130;
 208     // Use the default zoom factor value when Text Autosizer is turned on.
 209     render_view_host_ext->SetTextZoomFactor(1);
 210   } else {
 211     web_prefs->force_enable_zoom = false;
 212     render_view_host_ext->SetTextZoomFactor(text_size_percent / 100.0f);
 213   }
 214
 215   web_prefs->standard_font_family_map[webkit_glue::kCommonScript] =
 216       ConvertJavaStringToUTF16(
 217           Java_AwSettings_getStandardFontFamilyLocked(env, obj));
 218
 219   web_prefs->fixed_font_family_map[webkit_glue::kCommonScript] =
 220       ConvertJavaStringToUTF16(
 221           Java_AwSettings_getFixedFontFamilyLocked(env, obj));
 222
 223   web_prefs->sans_serif_font_family_map[webkit_glue::kCommonScript] =
 224       ConvertJavaStringToUTF16(
 225           Java_AwSettings_getSansSerifFontFamilyLocked(env, obj));
 226
 227   web_prefs->serif_font_family_map[webkit_glue::kCommonScript] =
 228       ConvertJavaStringToUTF16(
 229           Java_AwSettings_getSerifFontFamilyLocked(env, obj));
 230
 231   web_prefs->cursive_font_family_map[webkit_glue::kCommonScript] =
 232       ConvertJavaStringToUTF16(
 233           Java_AwSettings_getCursiveFontFamilyLocked(env, obj));
 234
 235   web_prefs->fantasy_font_family_map[webkit_glue::kCommonScript] =
 236       ConvertJavaStringToUTF16(
 237           Java_AwSettings_getFantasyFontFamilyLocked(env, obj));
 238
 239   web_prefs->default_encoding = ConvertJavaStringToUTF8(
 240       Java_AwSettings_getDefaultTextEncodingLocked(env, obj));
 241
 242   web_prefs->minimum_font_size =
 243       Java_AwSettings_getMinimumFontSizeLocked(env, obj);
 244
 245   web_prefs->minimum_logical_font_size =
 246       Java_AwSettings_getMinimumLogicalFontSizeLocked(env, obj);
 247
 248   web_prefs->default_font_size =
 249       Java_AwSettings_getDefaultFontSizeLocked(env, obj);
 250
 251   web_prefs->default_fixed_font_size =
 252       Java_AwSettings_getDefaultFixedFontSizeLocked(env, obj);
 253
 254   // Blink's LoadsImagesAutomatically and ImagesEnabled must be
 255   // set cris-cross to Android's. See
 256   // https://code.google.com/p/chromium/issues/detail?id=224317#c26
 257   web_prefs->loads_images_automatically =
 258       Java_AwSettings_getImagesEnabledLocked(env, obj);
 259   web_prefs->images_enabled =
 260       Java_AwSettings_getLoadsImagesAutomaticallyLocked(env, obj);
 261
 262   web_prefs->javascript_enabled =
 263       Java_AwSettings_getJavaScriptEnabledLocked(env, obj);
 264
 265   web_prefs->allow_universal_access_from_file_urls =
 266       Java_AwSettings_getAllowUniversalAccessFromFileURLsLocked(env, obj);
 267
 268   web_prefs->allow_file_access_from_file_urls =
 269       Java_AwSettings_getAllowFileAccessFromFileURLsLocked(env, obj);
 270
 271   web_prefs->javascript_can_open_windows_automatically =
 272       Java_AwSettings_getJavaScriptCanOpenWindowsAutomaticallyLocked(env, obj);
 273
 274   web_prefs->supports_multiple_windows =
 275       Java_AwSettings_getSupportMultipleWindowsLocked(env, obj);
 276
 277   web_prefs->plugins_enabled =
 278       !Java_AwSettings_getPluginsDisabledLocked(env, obj);
 279
 280   web_prefs->application_cache_enabled =
 281       Java_AwSettings_getAppCacheEnabledLocked(env, obj);
 282
 283   web_prefs->local_storage_enabled =
 284       Java_AwSettings_getDomStorageEnabledLocked(env, obj);
 285
 286   web_prefs->databases_enabled =
 287       Java_AwSettings_getDatabaseEnabledLocked(env, obj);
 288
 289   web_prefs->wide_viewport_quirk = true;
 290   web_prefs->double_tap_to_zoom_enabled = web_prefs->use_wide_viewport =
 291       Java_AwSettings_getUseWideViewportLocked(env, obj);
 292
 293   web_prefs->initialize_at_minimum_page_scale =
 294       Java_AwSettings_getLoadWithOverviewModeLocked(env, obj);
 295
 296   web_prefs->user_gesture_required_for_media_playback =
 297       Java_AwSettings_getMediaPlaybackRequiresUserGestureLocked(env, obj);
 298
 299   ScopedJavaLocalRef<jstring> url =
 300       Java_AwSettings_getDefaultVideoPosterURLLocked(env, obj);
 301   web_prefs->default_video_poster_url = url.obj() ?
 302       GURL(ConvertJavaStringToUTF8(url)) : GURL();
 303
 304   bool support_quirks = Java_AwSettings_getSupportLegacyQuirksLocked(env, obj);
 305   // Please see the corresponding Blink settings for bug references.
 306   web_prefs->support_deprecated_target_density_dpi = support_quirks;
 307   web_prefs->use_legacy_background_size_shorthand_behavior = support_quirks;
 308   web_prefs->viewport_meta_layout_size_quirk = support_quirks;
 309   web_prefs->viewport_meta_merge_content_quirk = support_quirks;
 310   web_prefs->viewport_meta_non_user_scalable_quirk = support_quirks;
 311   web_prefs->viewport_meta_zero_values_quirk = support_quirks;
 312   web_prefs->clobber_user_agent_initial_scale_quirk = support_quirks;
 313   web_prefs->ignore_main_frame_overflow_hidden_quirk = support_quirks;
 314   web_prefs->report_screen_size_in_physical_pixels_quirk = support_quirks;
 315
 316   web_prefs->password_echo_enabled =
 317       Java_AwSettings_getPasswordEchoEnabledLocked(env, obj);
 318   web_prefs->spatial_navigation_enabled =
 319       Java_AwSettings_getSpatialNavigationLocked(env, obj);
 320
 321   web_prefs->accelerated_2d_canvas_enabled =
 322       !accelerated_2d_canvas_disabled_by_switch_ &&
 323       Java_AwSettings_getEnableSupportedHardwareAcceleratedFeaturesLocked(
 324           env, obj);
 325 }
 326
 327 static jlong Init(JNIEnv* env,
 328                   jobject obj,
 329                   jlong web_contents) {
 330   AwSettings* settings = new AwSettings(env, obj, web_contents);
 331   return reinterpret_cast<intptr_t>(settings);
 332 }
 333
 334 static jstring GetDefaultUserAgent(JNIEnv* env, jclass clazz) {
 335   return base::android::ConvertUTF8ToJavaString(
 336       env, content::GetUserAgent(GURL())).Release();
 337 }
 338
 339 bool RegisterAwSettings(JNIEnv* env) {
 340   return RegisterNativesImpl(env) >= 0;
 341 }
 342
 343 }  // namespace android_webview