include.preload.js - Issue 5666188336037888: Issue 581 - Fixed element hiding/collapsing in anonymous frames on Chrome

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Issue 5666188336037888: Issue 581 - Fixed element hiding/collapsing in anonymous frames on Chrome (Closed)

Patch Set: Fixed accidental global variable Created May 30, 2014, 1:05 p.m.

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1 /*	1 /*

2 * This file is part of Adblock Plus <http://adblockplus.org/>,	2 * This file is part of Adblock Plus <http://adblockplus.org/>,

3 * Copyright (C) 2006-2014 Eyeo GmbH	3 * Copyright (C) 2006-2014 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

11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

12 * GNU General Public License for more details.	12 * GNU General Public License for more details.

13 *	13 *

14 * You should have received a copy of the GNU General Public License	14 * You should have received a copy of the GNU General Public License

15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.	15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.

16 */	16 */

17	17

18 var SELECTOR_GROUP_SIZE = 20;	18 var SELECTOR_GROUP_SIZE = 20;

19	19

20 // use Shadow DOM if available to don't mess with web pages that

21 // rely on the order of their own <style> tags. However

22 // the <shadow> element is broken in some Chrome 32 builds (#309)

23 //

24 // also Chrome 31-33 crashes in some situations on some pages when using

25 // ShadowDOM, e.g. when pressing tab key on Wikipedia and Facebook (#498)

26 //

27 // also we must not create the shadow root in the response callback passed

28 // to sendMessage(), otherwise Chrome breaks some websites (#450)

29 var shadow = null;

30 if ("webkitCreateShadowRoot" in document.documentElement && !/\bChrome\/3[1-3]\b /.test(navigator.userAgent))

31 {

32 shadow = document.documentElement.webkitCreateShadowRoot();

33 shadow.appendChild(document.createElement("shadow"));

34 }

35

36 // Sets the currently used CSS rules for elemhide filters

37 function setElemhideCSSRules(selectors)

38 {

39 if (selectors.length == 0)

40 return;

41

42 var style = document.createElement("style");

43 style.setAttribute("type", "text/css");

44

45 if (shadow)

46 {

47 shadow.appendChild(style);

48

49 try

50 {

51 document.querySelector("::content");

52

53 for (var i = 0; i < selectors.length; i++)

54 selectors[i] = "::content " + selectors[i];

55 }

56 catch (e)

57 {

58 for (var i = 0; i < selectors.length; i++)

59 selectors[i] = "::-webkit-distributed(" + selectors[i] + ")";

60 }

61 }

62 else

63 {

64 // Try to insert the style into the <head> tag, inserting directly under the

65 // document root breaks dev tools functionality:

66 // http://code.google.com/p/chromium/issues/detail?id=178109

67 (document.head \|\| document.documentElement).appendChild(style);

68 }

69

70 // WebKit apparently chokes when the selector list in a CSS rule is huge.

71 // So we split the elemhide selectors into groups.

72 for (var i = 0; selectors.length > 0; i++)

73 {

74 var selector = selectors.splice(0, SELECTOR_GROUP_SIZE).join(", ");

75 style.sheet.insertRule(selector + " { display: none !important; }", i);

76 }

77 }

78

79 var typeMap = {	20 var typeMap = {

80 "img": "IMAGE",	21 "img": "IMAGE",

81 "input": "IMAGE",	22 "input": "IMAGE",

82 "audio": "MEDIA",	23 "audio": "MEDIA",

83 "video": "MEDIA",	24 "video": "MEDIA",

84 "frame": "SUBDOCUMENT",	25 "frame": "SUBDOCUMENT",

85 "iframe": "SUBDOCUMENT"	26 "iframe": "SUBDOCUMENT"

86 };	27 };

87	28

88 function checkCollapse(event)	29 function checkCollapse(element)

89 {	30 {

90 var target = event.target;	31 var tag = element.localName;

91 var tag = target.localName;	32 if (tag in typeMap)

92 var expectedEvent = (tag == "iframe" \|\| tag == "frame" ? "load" : "error");

93 if (tag in typeMap && event.type == expectedEvent)

94 {	33 {

95 // This element failed loading, did we block it?	34 // This element failed loading, did we block it?

96 var url = target.src;	35 var url = element.src;

97 if (!url)	36 if (!url)

98 return;	37 return;

99	38

100 ext.backgroundPage.sendMessage(	39 ext.backgroundPage.sendMessage(

101 {	40 {

102 type: "should-collapse",	41 type: "should-collapse",

103 url: url,	42 url: url,

104 mediatype: typeMap[tag]	43 mediatype: typeMap[tag]

105 },	44 },

106	45

107 function(response)	46 function(response)

108 {	47 {

109 if (response && target.parentNode)	48 if (response && element.parentNode)

110 {	49 {

111 // <frame> cannot be removed, doing that will mess up the frameset	50 // <frame> cannot be removed, doing that will mess up the frameset

112 if (tag == "frame")	51 if (tag == "frame")

113 target.style.setProperty("visibility", "hidden", "important");	52 element.style.setProperty("visibility", "hidden", "important");

114 else	53 else

115 target.style.setProperty("display", "none", "important");	54 element.style.setProperty("display", "none", "important");

116 }	55 }

117 }	56 }

118 );	57 );

119 }	58 }

120 }	59 }

121	60

	61 function checkExceptionKey()

	62 {

	63 var attr = document.documentElement.getAttribute("data-adblockkey");

	64 if (attr)

	65 ext.backgroundPage.sendMessage({type: "add-key-exception", token: attr});

	66 }

	67

122 // Converts relative to absolute URL	68 // Converts relative to absolute URL

123 // e.g.: foo.swf on http://example.com/whatever/bar.html	69 // e.g.: foo.swf on http://example.com/whatever/bar.html

124 // -> http://example.com/whatever/foo.swf	70 // -> http://example.com/whatever/foo.swf

125 function relativeToAbsoluteUrl(url)	71 function relativeToAbsoluteUrl(url)

126 {	72 {

127 // If URL is already absolute, don't mess with it	73 // If URL is already absolute, don't mess with it

128 if (!url \|\| /^[\w\-]+:/i.test(url))	74 if (!url \|\| /^[\w\-]+:/i.test(url))

129 return url;	75 return url;

130	76

131 // Leading / means absolute path	77 // Leading / means absolute path

132 // Leading // means network path	78 // Leading // means network path

133 if (url[0] == '/')	79 if (url[0] == '/')

134 {	80 {

135 if (url[1] == '/')	81 if (url[1] == '/')

136 return document.location.protocol + url;	82 return document.location.protocol + url;

137 else	83 else

138 return document.location.protocol + "//" + document.location.host + url;	84 return document.location.protocol + "//" + document.location.host + url;

139 }	85 }

140	86

141 // Remove filename and add relative URL to it	87 // Remove filename and add relative URL to it

142 var base = document.baseURI.match(/.+\//);	88 var base = document.baseURI.match(/.+\//);

143 if (!base)	89 if (!base)

144 return document.baseURI + "/" + url;	90 return document.baseURI + "/" + url;

145 return base[0] + url;	91 return base[0] + url;

146 }	92 }

147	93

148 function init()	94 function init(document)

149 {	95 {

150 // Make sure this is really an HTML page, as Chrome runs these scripts on just about everything	96 // use Shadow DOM if available to don't mess with web pages that

151 if (!(document.documentElement instanceof HTMLElement))	97 // rely on the order of their own <style> tags. However

152 return;	98 // the <shadow> element is broken in some Chrome 32 builds (#309)

	99 //

	100 // also Chrome 31-33 crashes in some situations on some pages when using

	101 // ShadowDOM, e.g. when pressing tab key on Wikipedia and Facebook (#498)

	102 //

	103 // also we must not create the shadow root in the response callback passed

	104 // to sendMessage(), otherwise Chrome breaks some websites (#450)

	105 var shadow = null;

	106 if ("webkitCreateShadowRoot" in document.documentElement && !/\bChrome\/3[1-3] \b/.test(navigator.userAgent))

	107 {

	108 shadow = document.documentElement.webkitCreateShadowRoot();

	109 shadow.appendChild(document.createElement("shadow"));

	110 }

153	111

154 document.addEventListener("error", checkCollapse, true);	112 // Sets the currently used CSS rules for elemhide filters

155 document.addEventListener("load", checkCollapse, true);	113 var setElemhideCSSRules = function(selectors)

	114 {

	115 if (selectors.length == 0)

	116 return;

156	117

157 var attr = document.documentElement.getAttribute("data-adblockkey");	118 var style = document.createElement("style");

158 if (attr)	119 style.setAttribute("type", "text/css");

159 ext.backgroundPage.sendMessage({type: "add-key-exception", token: attr});	120

	121 if (shadow)

	122 {

	123 shadow.appendChild(style);

	124

	125 try

	126 {

	127 document.querySelector("::content");

	128

	129 for (var i = 0; i < selectors.length; i++)

	130 selectors[i] = "::content " + selectors[i];

	131 }

	132 catch (e)

	133 {

	134 for (var i = 0; i < selectors.length; i++)

	135 selectors[i] = "::-webkit-distributed(" + selectors[i] + ")";

	136 }

	137 }

	138 else

	139 {

	140 // Try to insert the style into the <head> tag, inserting directly under t he

	141 // document root breaks dev tools functionality:

	142 // http://code.google.com/p/chromium/issues/detail?id=178109

	143 (document.head \|\| document.documentElement).appendChild(style);

	144 }

	145

	146 var setRules = function()

	147 {

	148 // The sheet property might not exist yet if the

	149 // <style> element was created for a sub frame

	150 if (!style.sheet)

	151 {

	152 setTimeout(setRules, 0);

	153 return;

	154 }

	155

	156 // WebKit apparently chokes when the selector list in a CSS rule is huge.

	157 // So we split the elemhide selectors into groups.

	158 for (var i = 0; selectors.length > 0; i++)

	159 {

	160 var selector = selectors.splice(0, SELECTOR_GROUP_SIZE).join(", ");

	161 style.sheet.insertRule(selector + " { display: none !important; }", i);

	162 }

	163 };

	164

	165 setRules();

	166 };

	167

	168 document.addEventListener("error", function(event)

	169 {

	170 checkCollapse(event.target);

	171 }, true);

	172

	173 document.addEventListener("load", function(event)

	174 {

	175 if (/^i?frame$/.test(event.target.localName))

	176 {

	177 checkCollapse(event.target);

	178

	179 // Chrome doesn't run our content script on anonymous frames.

	180 // So we have to apply element hiding and collapsing from the

	181 // parent frame, when an anonymous sub frame loaded.

	182 if (/^(javascript:\|$)/.test(event.target.src) && /\bChrome\//.test(navigat or.userAgent))

	183 {

	184 var contentDocument = event.target.contentDocument;

	185

	186 if (contentDocument.documentElement instanceof HTMLElement)

	187 {

	188 init(contentDocument);

	189

	190 for (var tagName in typeMap)

	191 Array.prototype.forEach.call(contentDocument.getElementsByTagName(ta gName), checkCollapse);

	192 }

	193 }

	194 }

	195 }, true);

160	196

161 ext.backgroundPage.sendMessage({type: "get-selectors"}, setElemhideCSSRules);	197 ext.backgroundPage.sendMessage({type: "get-selectors"}, setElemhideCSSRules);

162 }	198 }

163	199

164 // In Chrome 18 the document might not be initialized yet	200 if (document.documentElement instanceof HTMLElement)

165 if (document.documentElement)	201 {

166 init();	202 checkExceptionKey();

167 else	203 init(document);

168 window.setTimeout(init, 0);	204 }

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