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| 1 /* | 1 /* |
| 2 * This file is part of Adblock Plus <https://adblockplus.org/>, | 2 * This file is part of Adblock Plus <https://adblockplus.org/>, |
| 3 * Copyright (C) 2006-2015 Eyeo GmbH | 3 * Copyright (C) 2006-2015 Eyeo GmbH |
| 4 * | 4 * |
| 5 * Adblock Plus is free software: you can redistribute it and/or modify | 5 * Adblock Plus is free software: you can redistribute it and/or modify |
| 6 * it under the terms of the GNU General Public License version 3 as | 6 * it under the terms of the GNU General Public License version 3 as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 8 * | 8 * |
| 9 * Adblock Plus is distributed in the hope that it will be useful, | 9 * Adblock Plus is distributed in the hope that it will be useful, |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 94 return contentDocument.location.protocol == "about:"; | 94 return contentDocument.location.protocol == "about:"; |
| 95 } | 95 } |
| 96 | 96 |
| 97 function resolveURL(url) | 97 function resolveURL(url) |
| 98 { | 98 { |
| 99 var a = document.createElement("a"); | 99 var a = document.createElement("a"); |
| 100 a.href = url; | 100 a.href = url; |
| 101 return a.href; | 101 return a.href; |
| 102 } | 102 } |
| 103 | 103 |
| 104 function traceHiddenElements(document, selectors) |
| 105 { |
| 106 function check(element) |
| 107 { |
| 108 var matchedSelectors = []; |
| 109 |
| 110 for (var i = 0; i < selectors.length; i++) |
| 111 { |
| 112 var selector = selectors[i]; |
| 113 var elements = document.querySelectorAll(selector); |
| 114 |
| 115 for (var j = 0; j < elements.length; j++) |
| 116 { |
| 117 if (getComputedStyle(elements[j]).display == "none") |
| 118 { |
| 119 matchedSelectors.push(selector); |
| 120 break; |
| 121 } |
| 122 } |
| 123 } |
| 124 |
| 125 if (matchedSelectors.length > 0) |
| 126 ext.backgroundPage.sendMessage({type: "trace-elemhide", selectors: matched
Selectors}); |
| 127 } |
| 128 |
| 129 function trace() |
| 130 { |
| 131 check(); |
| 132 |
| 133 new MutationObserver(check).observe( |
| 134 document, |
| 135 { |
| 136 childList: true, |
| 137 attributes: true, |
| 138 subtree: true |
| 139 } |
| 140 ); |
| 141 } |
| 142 |
| 143 if (document.readyState == "loading") |
| 144 document.addEventListener("DOMContentLoaded", trace); |
| 145 else |
| 146 trace(); |
| 147 } |
| 148 |
| 104 function reinjectRulesWhenRemoved(document, style) | 149 function reinjectRulesWhenRemoved(document, style) |
| 105 { | 150 { |
| 106 var MutationObserver = window.MutationObserver || window.WebKitMutationObserve
r; | 151 var MutationObserver = window.MutationObserver || window.WebKitMutationObserve
r; |
| 107 if (!MutationObserver) | 152 if (!MutationObserver) |
| 108 return; | 153 return; |
| 109 | 154 |
| 110 var observer = new MutationObserver(function(mutations) | 155 var observer = new MutationObserver(function(mutations) |
| 111 { | 156 { |
| 112 var isStyleRemoved = false; | 157 var isStyleRemoved = false; |
| 113 for (var i = 0; i < mutations.length; i++) | 158 for (var i = 0; i < mutations.length; i++) |
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| 193 // Also, we can't use shadow DOM on Google Docs, since it breaks printing | 238 // Also, we can't use shadow DOM on Google Docs, since it breaks printing |
| 194 // there (#1770). | 239 // there (#1770). |
| 195 var shadow = null; | 240 var shadow = null; |
| 196 if ("createShadowRoot" in document.documentElement && document.domain != "docs
.google.com") | 241 if ("createShadowRoot" in document.documentElement && document.domain != "docs
.google.com") |
| 197 { | 242 { |
| 198 shadow = document.documentElement.createShadowRoot(); | 243 shadow = document.documentElement.createShadowRoot(); |
| 199 shadow.appendChild(document.createElement("shadow")); | 244 shadow.appendChild(document.createElement("shadow")); |
| 200 } | 245 } |
| 201 | 246 |
| 202 // Sets the currently used CSS rules for elemhide filters | 247 // Sets the currently used CSS rules for elemhide filters |
| 203 var setElemhideCSSRules = function(selectors) | 248 var setElemhideCSSRules = function(response) |
| 204 { | 249 { |
| 205 if (selectors.length == 0) | 250 if (response.selectors.length == 0) |
| 206 return; | 251 return; |
| 207 | 252 |
| 208 var style = document.createElement("style"); | 253 var style = document.createElement("style"); |
| 209 style.setAttribute("type", "text/css"); | 254 style.setAttribute("type", "text/css"); |
| 210 | 255 |
| 256 var selectors = response.selectors; |
| 211 if (shadow) | 257 if (shadow) |
| 212 { | 258 { |
| 213 shadow.appendChild(style); | 259 shadow.appendChild(style); |
| 214 selectors = convertSelectorsForShadowDOM(selectors); | 260 selectors = convertSelectorsForShadowDOM(selectors); |
| 215 } | 261 } |
| 216 else | 262 else |
| 217 { | 263 { |
| 218 // Try to insert the style into the <head> tag, inserting directly under t
he | 264 // Try to insert the style into the <head> tag, inserting directly under t
he |
| 219 // document root breaks dev tools functionality: | 265 // document root breaks dev tools functionality: |
| 220 // http://code.google.com/p/chromium/issues/detail?id=178109 | 266 // http://code.google.com/p/chromium/issues/detail?id=178109 |
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| 231 return; | 277 return; |
| 232 } | 278 } |
| 233 | 279 |
| 234 // WebKit apparently chokes when the selector list in a CSS rule is huge. | 280 // WebKit apparently chokes when the selector list in a CSS rule is huge. |
| 235 // So we split the elemhide selectors into groups. | 281 // So we split the elemhide selectors into groups. |
| 236 for (var i = 0; selectors.length > 0; i++) | 282 for (var i = 0; selectors.length > 0; i++) |
| 237 { | 283 { |
| 238 var selector = selectors.splice(0, SELECTOR_GROUP_SIZE).join(", "); | 284 var selector = selectors.splice(0, SELECTOR_GROUP_SIZE).join(", "); |
| 239 style.sheet.insertRule(selector + " { display: none !important; }", i); | 285 style.sheet.insertRule(selector + " { display: none !important; }", i); |
| 240 } | 286 } |
| 287 |
| 288 if (response.trace) |
| 289 traceHiddenElements(document, response.selectors); |
| 241 }; | 290 }; |
| 242 | 291 |
| 243 setRules(); | 292 setRules(); |
| 244 reinjectRulesWhenRemoved(document, style); | 293 reinjectRulesWhenRemoved(document, style); |
| 245 }; | 294 }; |
| 246 | 295 |
| 247 document.addEventListener("error", function(event) | 296 document.addEventListener("error", function(event) |
| 248 { | 297 { |
| 249 checkCollapse(event.target); | 298 checkCollapse(event.target); |
| 250 }, true); | 299 }, true); |
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| 270 }, true); | 319 }, true); |
| 271 | 320 |
| 272 ext.backgroundPage.sendMessage({type: "get-selectors"}, setElemhideCSSRules); | 321 ext.backgroundPage.sendMessage({type: "get-selectors"}, setElemhideCSSRules); |
| 273 } | 322 } |
| 274 | 323 |
| 275 if (document instanceof HTMLDocument) | 324 if (document instanceof HTMLDocument) |
| 276 { | 325 { |
| 277 checkSitekey(); | 326 checkSitekey(); |
| 278 init(document); | 327 init(document); |
| 279 } | 328 } |
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