├── .gitignore
├── README.md
└── direct_google_images.user.js


/.gitignore:
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1 | /.settings/
2 | /.project
3 | /.tern-project
4 | 


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/README.md:
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1 | # Direct Google Images
2 | **License:** [GPLv2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) or later
3 | 
4 | **Install:** [Stable](https://rawgit.com/zanetu/direct_google_images/master/direct_google_images.user.js) / [Beta](https://rawgit.com/zanetu/direct_google_images/beta/direct_google_images.user.js)
5 | 
6 | #### A userscript that provides direct links in Google Images. 
7 | - Includes some enhancements as to images embedded in web search results. 
8 | - Can be used in conjunction with [Direct Google](http://github.com/zanetu/direct_google). 
9 | 


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/direct_google_images.user.js:
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  1 | // ==UserScript==
  2 | // @name         Direct Google Images
  3 | // @namespace    http://greasyfork.org/en/users/461
  4 | // @version      0.99
  5 | // @description  Provides direct links in Google Images.
  6 | // @include      /^https?\:\/\/(www|encrypted)\.google\./
  7 | // @author       zanetu
  8 | // @license      GPL version 2 or any later version; http://www.gnu.org/licenses/gpl-2.0.txt
  9 | // @grant        GM_addStyle
 10 | // @run-at       document-start
 11 | // @noframes
 12 | // ==/UserScript==
 13 | 
 14 | //do not run in frames or iframes
 15 | if(window.top == window.self) {
 16 | 	var RE = /imgres\?imgurl\=(http.+?)\&imgrefurl\=(http.+?)(\&|$)/i
 17 | 	var RE_SOURCE = /url\?(?:.*?\&)*?url\=(http.+?)(\&|$)/i
 18 | 	var WATCH_EVENTS = ['mouseenter', 'mousedown', 'click', 'focus', 'touchstart']
 19 | 	var clickCount = 0
 20 | 
 21 | 	function dd(url) {
 22 | 		var d1 = decodeURIComponent(url), d2
 23 | 		try {
 24 | 			d2 = decodeURIComponent(d1)
 25 | 		}
 26 | 		catch(malformed) {
 27 | 			return d1
 28 | 		}
 29 | 		return d2
 30 | 	}
 31 | 
 32 | 	function closest(element, matchFunction, maxLevel) {
 33 | 		var max = undefined === maxLevel ? Number.POSITIVE_INFINITY : parseInt(maxLevel) + 1
 34 | 		if(max > 0 && 'function' === typeof matchFunction) {
 35 | 			for(; element && max--; element = element.parentNode) {
 36 | 				if(matchFunction(element)) {
 37 | 					return element
 38 | 				}
 39 | 			}
 40 | 		}
 41 | 		return null
 42 | 	}
 43 | 
 44 | 	function modifyGoogleImage(element) {
 45 | 		if(element && element.href) {
 46 | 			var m = element.href.match(RE)
 47 | 			if(m && m[1] && m[2]) {
 48 | 				element.href = dd(m[1])
 49 | 				setDirect(element)
 50 | 				if(isClickedLast(element)) element.click()
 51 | 				return true
 52 | 			}
 53 | 			m = element.href.match(RE_SOURCE)
 54 | 			if(m && m[1]) {
 55 | 				element.href = dd(m[1])
 56 | 				setDirect(element)
 57 | 				return true
 58 | 			}
 59 | 		}
 60 | 		return false
 61 | 	}
 62 | 
 63 | 	function isDirect(e) {
 64 | 		return 'yes' === (e && e.getAttribute && e.getAttribute('direct'))
 65 | 	}
 66 | 
 67 | 	function setDirect(e) {
 68 | 		e && e.setAttribute && e.setAttribute('direct', 'yes')
 69 | 	}
 70 | 
 71 | 	function triggerMouseEvent(element, eventType) {
 72 | 		var event = new MouseEvent('mousedown', {
 73 | 			bubbles: true,
 74 | 			cancelable: true
 75 | 		})
 76 | 		element.dispatchEvent(event)
 77 | 	}
 78 | 	
 79 | 	function isClickedLast(e) {
 80 | 		return clickCount == (e && e.getAttribute && e.getAttribute('click-number'))
 81 | 	}
 82 | 	
 83 | 	function cacheClick(e) {
 84 | 		e && e.setAttribute && e.setAttribute('click-number', ++clickCount)
 85 | 	}
 86 | 
 87 | 	//override event handlers
 88 | 	for(var i in WATCH_EVENTS) {
 89 | 		document.addEventListener(WATCH_EVENTS[i], function(event) {
 90 | 			var t = event.target
 91 | 			var aContainer = closest(t, function(e) {
 92 | 				return 'A' === e.nodeName
 93 | 				&& (
 94 | 						//image; regex can be replaced by more recent classList.contains()
 95 | 						/(^|\s)islib(\s|$)/.test(e.className)
 96 | 						//image source
 97 | 						|| 'noopener' === e.getAttribute('rel')
 98 | 					)
 99 | 			}, 2)
100 | 			if(!aContainer) return
101 | 			if('click' === event.type) {
102 | 				//suppress unwanted side bar
103 | 				event.stopPropagation()
104 | 				//cache left clicks, ignoring keys like ctrl
105 | 				if(0 === event.button) cacheClick(aContainer)
106 | 			}
107 | 			if(isDirect(aContainer)) {
108 | 				if('mouseenter' !== event.type) event.stopPropagation()
109 | 				return
110 | 			}
111 | 			if('mouseenter' === event.type) {
112 | 				if(!modifyGoogleImage(aContainer)) {
113 | 					var observer = new MutationObserver(function(mutationRecords) {
114 | 						for(var j in mutationRecords) {
115 | 							modifyGoogleImage(mutationRecords[j].target)
116 | 						}
117 | 					})
118 | 					observer.observe(aContainer, {attributes: true})
119 | 					triggerMouseEvent(t, 'mousedown')
120 | 				}
121 | 			}
122 | 		}, true)
123 | 	}
124 | }
125 | 


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