| 1 | define([ |
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| 2 | "dojo/_base/array", // array.every |
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| 3 | "dojo/_base/declare", // declare |
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| 4 | "dojo/_base/lang" // lang.isArray |
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| 5 | ], function(array, declare, lang){ |
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| 6 | |
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| 7 | // module: |
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| 8 | // dijit/_editor/range |
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| 9 | |
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| 10 | var rangeapi = { |
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| 11 | // summary: |
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| 12 | // W3C range API |
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| 13 | |
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| 14 | getIndex: function(/*DomNode*/ node, /*DomNode*/ parent){ |
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| 15 | var ret = [], retR = []; |
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| 16 | var onode = node; |
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| 17 | |
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| 18 | var pnode, n; |
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| 19 | while(node != parent){ |
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| 20 | var i = 0; |
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| 21 | pnode = node.parentNode; |
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| 22 | while((n = pnode.childNodes[i++])){ |
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| 23 | if(n === node){ |
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| 24 | --i; |
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| 25 | break; |
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| 26 | } |
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| 27 | } |
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| 28 | //if(i>=pnode.childNodes.length){ |
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| 29 | //console.debug("Error finding index of a node in dijit/range.getIndex()"); |
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| 30 | //} |
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| 31 | ret.unshift(i); |
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| 32 | retR.unshift(i - pnode.childNodes.length); |
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| 33 | node = pnode; |
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| 34 | } |
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| 35 | |
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| 36 | //normalized() can not be called so often to prevent |
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| 37 | //invalidating selection/range, so we have to detect |
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| 38 | //here that any text nodes in a row |
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| 39 | if(ret.length > 0 && onode.nodeType == 3){ |
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| 40 | n = onode.previousSibling; |
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| 41 | while(n && n.nodeType == 3){ |
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| 42 | ret[ret.length - 1]--; |
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| 43 | n = n.previousSibling; |
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| 44 | } |
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| 45 | n = onode.nextSibling; |
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| 46 | while(n && n.nodeType == 3){ |
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| 47 | retR[retR.length - 1]++; |
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| 48 | n = n.nextSibling; |
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| 49 | } |
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| 50 | } |
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| 51 | |
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| 52 | return {o: ret, r:retR}; |
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| 53 | }, |
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| 54 | |
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| 55 | getNode: function(/*Array*/ index, /*DomNode*/ parent){ |
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| 56 | if(!lang.isArray(index) || index.length == 0){ |
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| 57 | return parent; |
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| 58 | } |
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| 59 | var node = parent; |
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| 60 | // if(!node)debugger |
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| 61 | array.every(index, function(i){ |
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| 62 | if(i >= 0 && i < node.childNodes.length){ |
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| 63 | node = node.childNodes[i]; |
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| 64 | }else{ |
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| 65 | node = null; |
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| 66 | //console.debug('Error: can not find node with index',index,'under parent node',parent ); |
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| 67 | return false; //terminate array.every |
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| 68 | } |
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| 69 | return true; //carry on the every loop |
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| 70 | }); |
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| 71 | |
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| 72 | return node; |
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| 73 | }, |
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| 74 | |
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| 75 | getCommonAncestor: function(n1, n2, root){ |
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| 76 | root = root || n1.ownerDocument.body; |
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| 77 | var getAncestors = function(n){ |
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| 78 | var as = []; |
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| 79 | while(n){ |
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| 80 | as.unshift(n); |
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| 81 | if(n !== root){ |
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| 82 | n = n.parentNode; |
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| 83 | }else{ |
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| 84 | break; |
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| 85 | } |
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| 86 | } |
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| 87 | return as; |
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| 88 | }; |
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| 89 | var n1as = getAncestors(n1); |
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| 90 | var n2as = getAncestors(n2); |
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| 91 | |
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| 92 | var m = Math.min(n1as.length, n2as.length); |
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| 93 | var com = n1as[0]; //at least, one element should be in the array: the root (BODY by default) |
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| 94 | for(var i = 1; i < m; i++){ |
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| 95 | if(n1as[i] === n2as[i]){ |
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| 96 | com = n1as[i] |
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| 97 | }else{ |
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| 98 | break; |
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| 99 | } |
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| 100 | } |
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| 101 | return com; |
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| 102 | }, |
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| 103 | |
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| 104 | getAncestor: function(/*DomNode*/ node, /*RegEx?*/ regex, /*DomNode?*/ root){ |
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| 105 | root = root || node.ownerDocument.body; |
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| 106 | while(node && node !== root){ |
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| 107 | var name = node.nodeName.toUpperCase(); |
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| 108 | if(regex.test(name)){ |
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| 109 | return node; |
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| 110 | } |
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| 111 | |
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| 112 | node = node.parentNode; |
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| 113 | } |
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| 114 | return null; |
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| 115 | }, |
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| 116 | |
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| 117 | BlockTagNames: /^(?:P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|DT|DE)$/, |
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| 118 | |
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| 119 | getBlockAncestor: function(/*DomNode*/ node, /*RegEx?*/ regex, /*DomNode?*/ root){ |
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| 120 | root = root || node.ownerDocument.body; |
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| 121 | regex = regex || rangeapi.BlockTagNames; |
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| 122 | var block = null, blockContainer; |
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| 123 | while(node && node !== root){ |
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| 124 | var name = node.nodeName.toUpperCase(); |
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| 125 | if(!block && regex.test(name)){ |
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| 126 | block = node; |
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| 127 | } |
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| 128 | if(!blockContainer && (/^(?:BODY|TD|TH|CAPTION)$/).test(name)){ |
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| 129 | blockContainer = node; |
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| 130 | } |
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| 131 | |
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| 132 | node = node.parentNode; |
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| 133 | } |
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| 134 | return {blockNode:block, blockContainer:blockContainer || node.ownerDocument.body}; |
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| 135 | }, |
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| 136 | |
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| 137 | atBeginningOfContainer: function(/*DomNode*/ container, /*DomNode*/ node, /*Int*/ offset){ |
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| 138 | var atBeginning = false; |
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| 139 | var offsetAtBeginning = (offset == 0); |
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| 140 | if(!offsetAtBeginning && node.nodeType == 3){ //if this is a text node, check whether the left part is all space |
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| 141 | if(/^[\s\xA0]+$/.test(node.nodeValue.substr(0, offset))){ |
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| 142 | offsetAtBeginning = true; |
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| 143 | } |
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| 144 | } |
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| 145 | if(offsetAtBeginning){ |
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| 146 | var cnode = node; |
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| 147 | atBeginning = true; |
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| 148 | while(cnode && cnode !== container){ |
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| 149 | if(cnode.previousSibling){ |
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| 150 | atBeginning = false; |
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| 151 | break; |
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| 152 | } |
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| 153 | cnode = cnode.parentNode; |
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| 154 | } |
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| 155 | } |
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| 156 | return atBeginning; |
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| 157 | }, |
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| 158 | |
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| 159 | atEndOfContainer: function(/*DomNode*/ container, /*DomNode*/ node, /*Int*/ offset){ |
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| 160 | var atEnd = false; |
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| 161 | var offsetAtEnd = (offset == (node.length || node.childNodes.length)); |
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| 162 | if(!offsetAtEnd && node.nodeType == 3){ //if this is a text node, check whether the right part is all space |
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| 163 | if(/^[\s\xA0]+$/.test(node.nodeValue.substr(offset))){ |
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| 164 | offsetAtEnd = true; |
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| 165 | } |
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| 166 | } |
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| 167 | if(offsetAtEnd){ |
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| 168 | var cnode = node; |
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| 169 | atEnd = true; |
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| 170 | while(cnode && cnode !== container){ |
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| 171 | if(cnode.nextSibling){ |
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| 172 | atEnd = false; |
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| 173 | break; |
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| 174 | } |
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| 175 | cnode = cnode.parentNode; |
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| 176 | } |
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| 177 | } |
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| 178 | return atEnd; |
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| 179 | }, |
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| 180 | |
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| 181 | adjacentNoneTextNode: function(startnode, next){ |
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| 182 | var node = startnode; |
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| 183 | var len = (0 - startnode.length) || 0; |
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| 184 | var prop = next ? 'nextSibling' : 'previousSibling'; |
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| 185 | while(node){ |
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| 186 | if(node.nodeType != 3){ |
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| 187 | break; |
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| 188 | } |
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| 189 | len += node.length; |
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| 190 | node = node[prop]; |
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| 191 | } |
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| 192 | return [node,len]; |
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| 193 | }, |
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| 194 | |
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| 195 | create: function(/*Window?*/ win){ // TODO: for 2.0, replace optional window param w/mandatory window or document param |
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| 196 | win = win || window; |
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| 197 | if(win.getSelection){ |
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| 198 | return win.document.createRange(); |
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| 199 | }else{//IE |
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| 200 | return new W3CRange(); |
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| 201 | } |
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| 202 | }, |
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| 203 | |
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| 204 | getSelection: function(/*Window*/ window, /*Boolean?*/ ignoreUpdate){ |
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| 205 | if(window.getSelection){ |
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| 206 | return window.getSelection(); |
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| 207 | }else{//IE |
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| 208 | var s = new ie.selection(window); |
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| 209 | if(!ignoreUpdate){ |
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| 210 | s._getCurrentSelection(); |
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| 211 | } |
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| 212 | return s; |
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| 213 | } |
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| 214 | } |
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| 215 | }; |
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| 216 | |
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| 217 | // TODO: convert to has() test? But remember IE9 issues with quirks vs. standards in main frame vs. iframe. |
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| 218 | if(!window.getSelection){ |
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| 219 | var ie = rangeapi.ie = { |
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| 220 | cachedSelection: {}, |
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| 221 | selection: function(window){ |
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| 222 | this._ranges = []; |
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| 223 | this.addRange = function(r, /*boolean*/ internal){ |
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| 224 | this._ranges.push(r); |
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| 225 | if(!internal){ |
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| 226 | r._select(); |
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| 227 | } |
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| 228 | this.rangeCount = this._ranges.length; |
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| 229 | }; |
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| 230 | this.removeAllRanges = function(){ |
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| 231 | //don't detach, the range may be used later |
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| 232 | // for(var i=0;i<this._ranges.length;i++){ |
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| 233 | // this._ranges[i].detach(); |
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| 234 | // } |
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| 235 | this._ranges = []; |
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| 236 | this.rangeCount = 0; |
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| 237 | }; |
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| 238 | var _initCurrentRange = function(){ |
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| 239 | var r = window.document.selection.createRange(); |
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| 240 | var type = window.document.selection.type.toUpperCase(); |
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| 241 | if(type == "CONTROL"){ |
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| 242 | //TODO: multiple range selection(?) |
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| 243 | return new W3CRange(ie.decomposeControlRange(r)); |
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| 244 | }else{ |
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| 245 | return new W3CRange(ie.decomposeTextRange(r)); |
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| 246 | } |
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| 247 | }; |
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| 248 | this.getRangeAt = function(i){ |
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| 249 | return this._ranges[i]; |
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| 250 | }; |
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| 251 | this._getCurrentSelection = function(){ |
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| 252 | this.removeAllRanges(); |
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| 253 | var r = _initCurrentRange(); |
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| 254 | if(r){ |
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| 255 | this.addRange(r, true); |
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| 256 | this.isCollapsed = r.collapsed; |
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| 257 | }else{ |
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| 258 | this.isCollapsed = true; |
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| 259 | } |
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| 260 | }; |
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| 261 | }, |
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| 262 | decomposeControlRange: function(range){ |
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| 263 | var firstnode = range.item(0), lastnode = range.item(range.length - 1); |
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| 264 | var startContainer = firstnode.parentNode, endContainer = lastnode.parentNode; |
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| 265 | var startOffset = rangeapi.getIndex(firstnode, startContainer).o[0]; |
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| 266 | var endOffset = rangeapi.getIndex(lastnode, endContainer).o[0] + 1; |
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| 267 | return [startContainer, startOffset,endContainer, endOffset]; |
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| 268 | }, |
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| 269 | getEndPoint: function(range, end){ |
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| 270 | var atmrange = range.duplicate(); |
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| 271 | atmrange.collapse(!end); |
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| 272 | var cmpstr = 'EndTo' + (end ? 'End' : 'Start'); |
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| 273 | var parentNode = atmrange.parentElement(); |
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| 274 | |
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| 275 | var startnode, startOffset, lastNode; |
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| 276 | if(parentNode.childNodes.length > 0){ |
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| 277 | array.every(parentNode.childNodes, function(node, i){ |
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| 278 | var calOffset; |
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| 279 | if(node.nodeType != 3){ |
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| 280 | atmrange.moveToElementText(node); |
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| 281 | |
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| 282 | if(atmrange.compareEndPoints(cmpstr, range) > 0){ |
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| 283 | //startnode = node.previousSibling; |
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| 284 | if(lastNode && lastNode.nodeType == 3){ |
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| 285 | //where shall we put the start? in the text node or after? |
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| 286 | startnode = lastNode; |
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| 287 | calOffset = true; |
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| 288 | }else{ |
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| 289 | startnode = parentNode; |
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| 290 | startOffset = i; |
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| 291 | return false; |
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| 292 | } |
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| 293 | }else{ |
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| 294 | if(i == parentNode.childNodes.length - 1){ |
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| 295 | startnode = parentNode; |
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| 296 | startOffset = parentNode.childNodes.length; |
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| 297 | return false; |
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| 298 | } |
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| 299 | } |
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| 300 | }else{ |
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| 301 | if(i == parentNode.childNodes.length - 1){//at the end of this node |
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| 302 | startnode = node; |
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| 303 | calOffset = true; |
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| 304 | } |
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| 305 | } |
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| 306 | // try{ |
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| 307 | if(calOffset && startnode){ |
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| 308 | var prevnode = rangeapi.adjacentNoneTextNode(startnode)[0]; |
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| 309 | if(prevnode){ |
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| 310 | startnode = prevnode.nextSibling; |
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| 311 | }else{ |
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| 312 | startnode = parentNode.firstChild; //firstChild must be a text node |
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| 313 | } |
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| 314 | var prevnodeobj = rangeapi.adjacentNoneTextNode(startnode); |
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| 315 | prevnode = prevnodeobj[0]; |
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| 316 | var lenoffset = prevnodeobj[1]; |
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| 317 | if(prevnode){ |
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| 318 | atmrange.moveToElementText(prevnode); |
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| 319 | atmrange.collapse(false); |
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| 320 | }else{ |
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| 321 | atmrange.moveToElementText(parentNode); |
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| 322 | } |
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| 323 | atmrange.setEndPoint(cmpstr, range); |
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| 324 | startOffset = atmrange.text.length - lenoffset; |
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| 325 | |
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| 326 | return false; |
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| 327 | } |
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| 328 | // }catch(e){ debugger } |
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| 329 | lastNode = node; |
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| 330 | return true; |
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| 331 | }); |
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| 332 | }else{ |
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| 333 | startnode = parentNode; |
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| 334 | startOffset = 0; |
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| 335 | } |
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| 336 | |
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| 337 | //if at the end of startnode and we are dealing with start container, then |
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| 338 | //move the startnode to nextSibling if it is a text node |
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| 339 | //TODO: do this for end container? |
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| 340 | if(!end && startnode.nodeType == 1 && startOffset == startnode.childNodes.length){ |
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| 341 | var nextnode = startnode.nextSibling; |
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| 342 | if(nextnode && nextnode.nodeType == 3){ |
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| 343 | startnode = nextnode; |
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| 344 | startOffset = 0; |
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| 345 | } |
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| 346 | } |
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| 347 | return [startnode, startOffset]; |
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| 348 | }, |
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| 349 | setEndPoint: function(range, container, offset){ |
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| 350 | //text node |
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| 351 | var atmrange = range.duplicate(), node, len; |
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| 352 | if(container.nodeType != 3){ //normal node |
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| 353 | if(offset > 0){ |
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| 354 | node = container.childNodes[offset - 1]; |
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| 355 | if(node){ |
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| 356 | if(node.nodeType == 3){ |
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| 357 | container = node; |
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| 358 | offset = node.length; |
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| 359 | //pass through |
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| 360 | }else{ |
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| 361 | if(node.nextSibling && node.nextSibling.nodeType == 3){ |
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| 362 | container = node.nextSibling; |
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| 363 | offset = 0; |
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| 364 | //pass through |
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| 365 | }else{ |
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| 366 | atmrange.moveToElementText(node.nextSibling ? node : container); |
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| 367 | var parent = node.parentNode; |
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| 368 | var tempNode = parent.insertBefore(node.ownerDocument.createTextNode(' '), node.nextSibling); |
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| 369 | atmrange.collapse(false); |
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| 370 | parent.removeChild(tempNode); |
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| 371 | } |
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| 372 | } |
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| 373 | } |
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| 374 | }else{ |
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| 375 | atmrange.moveToElementText(container); |
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| 376 | atmrange.collapse(true); |
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| 377 | } |
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| 378 | } |
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| 379 | if(container.nodeType == 3){ |
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| 380 | var prevnodeobj = rangeapi.adjacentNoneTextNode(container); |
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| 381 | var prevnode = prevnodeobj[0]; |
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| 382 | len = prevnodeobj[1]; |
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| 383 | if(prevnode){ |
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| 384 | atmrange.moveToElementText(prevnode); |
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| 385 | atmrange.collapse(false); |
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| 386 | //if contentEditable is not inherit, the above collapse won't make the end point |
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| 387 | //in the correctly position: it always has a -1 offset, so compensate it |
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| 388 | if(prevnode.contentEditable != 'inherit'){ |
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| 389 | len++; |
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| 390 | } |
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| 391 | }else{ |
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| 392 | atmrange.moveToElementText(container.parentNode); |
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| 393 | atmrange.collapse(true); |
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| 394 | |
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| 395 | // Correct internal cursor position |
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| 396 | // http://bugs.dojotoolkit.org/ticket/15578 |
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| 397 | atmrange.move('character', 1); |
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| 398 | atmrange.move('character', -1); |
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| 399 | } |
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| 400 | |
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| 401 | offset += len; |
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| 402 | if(offset > 0){ |
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| 403 | if(atmrange.move('character', offset) != offset){ |
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| 404 | console.error('Error when moving!'); |
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| 405 | } |
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| 406 | } |
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| 407 | } |
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| 408 | |
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| 409 | return atmrange; |
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| 410 | }, |
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| 411 | decomposeTextRange: function(range){ |
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| 412 | var tmpary = ie.getEndPoint(range); |
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| 413 | var startContainer = tmpary[0], startOffset = tmpary[1]; |
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| 414 | var endContainer = tmpary[0], endOffset = tmpary[1]; |
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| 415 | |
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| 416 | if(range.htmlText.length){ |
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| 417 | if(range.htmlText == range.text){ //in the same text node |
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| 418 | endOffset = startOffset + range.text.length; |
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| 419 | }else{ |
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| 420 | tmpary = ie.getEndPoint(range, true); |
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| 421 | endContainer = tmpary[0],endOffset = tmpary[1]; |
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| 422 | // if(startContainer.tagName == "BODY"){ |
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| 423 | // startContainer = startContainer.firstChild; |
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| 424 | // } |
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| 425 | } |
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| 426 | } |
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| 427 | return [startContainer, startOffset, endContainer, endOffset]; |
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| 428 | }, |
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| 429 | setRange: function(range, startContainer, startOffset, endContainer, endOffset, collapsed){ |
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| 430 | var start = ie.setEndPoint(range, startContainer, startOffset); |
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| 431 | |
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| 432 | range.setEndPoint('StartToStart', start); |
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| 433 | if(!collapsed){ |
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| 434 | var end = ie.setEndPoint(range, endContainer, endOffset); |
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| 435 | } |
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| 436 | range.setEndPoint('EndToEnd', end || start); |
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| 437 | |
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| 438 | return range; |
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| 439 | } |
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| 440 | }; |
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| 441 | |
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| 442 | var W3CRange = rangeapi.W3CRange = declare(null, { |
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| 443 | constructor: function(){ |
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| 444 | if(arguments.length>0){ |
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| 445 | this.setStart(arguments[0][0],arguments[0][1]); |
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| 446 | this.setEnd(arguments[0][2],arguments[0][3]); |
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| 447 | }else{ |
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| 448 | this.commonAncestorContainer = null; |
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| 449 | this.startContainer = null; |
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| 450 | this.startOffset = 0; |
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| 451 | this.endContainer = null; |
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| 452 | this.endOffset = 0; |
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| 453 | this.collapsed = true; |
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| 454 | } |
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| 455 | }, |
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| 456 | _updateInternal: function(){ |
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| 457 | if(this.startContainer !== this.endContainer){ |
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| 458 | this.commonAncestorContainer = rangeapi.getCommonAncestor(this.startContainer, this.endContainer); |
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| 459 | }else{ |
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| 460 | this.commonAncestorContainer = this.startContainer; |
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| 461 | } |
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| 462 | this.collapsed = (this.startContainer === this.endContainer) && (this.startOffset == this.endOffset); |
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| 463 | }, |
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| 464 | setStart: function(node, offset){ |
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| 465 | offset=parseInt(offset); |
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| 466 | if(this.startContainer === node && this.startOffset == offset){ |
|---|
| 467 | return; |
|---|
| 468 | } |
|---|
| 469 | delete this._cachedBookmark; |
|---|
| 470 | |
|---|
| 471 | this.startContainer = node; |
|---|
| 472 | this.startOffset = offset; |
|---|
| 473 | if(!this.endContainer){ |
|---|
| 474 | this.setEnd(node, offset); |
|---|
| 475 | }else{ |
|---|
| 476 | this._updateInternal(); |
|---|
| 477 | } |
|---|
| 478 | }, |
|---|
| 479 | setEnd: function(node, offset){ |
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| 480 | offset=parseInt(offset); |
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| 481 | if(this.endContainer === node && this.endOffset == offset){ |
|---|
| 482 | return; |
|---|
| 483 | } |
|---|
| 484 | delete this._cachedBookmark; |
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| 485 | |
|---|
| 486 | this.endContainer = node; |
|---|
| 487 | this.endOffset = offset; |
|---|
| 488 | if(!this.startContainer){ |
|---|
| 489 | this.setStart(node, offset); |
|---|
| 490 | }else{ |
|---|
| 491 | this._updateInternal(); |
|---|
| 492 | } |
|---|
| 493 | }, |
|---|
| 494 | setStartAfter: function(node, offset){ |
|---|
| 495 | this._setPoint('setStart', node, offset, 1); |
|---|
| 496 | }, |
|---|
| 497 | setStartBefore: function(node, offset){ |
|---|
| 498 | this._setPoint('setStart', node, offset, 0); |
|---|
| 499 | }, |
|---|
| 500 | setEndAfter: function(node, offset){ |
|---|
| 501 | this._setPoint('setEnd', node, offset, 1); |
|---|
| 502 | }, |
|---|
| 503 | setEndBefore: function(node, offset){ |
|---|
| 504 | this._setPoint('setEnd', node, offset, 0); |
|---|
| 505 | }, |
|---|
| 506 | _setPoint: function(what, node, offset, ext){ |
|---|
| 507 | var index = rangeapi.getIndex(node, node.parentNode).o; |
|---|
| 508 | this[what](node.parentNode, index.pop()+ext); |
|---|
| 509 | }, |
|---|
| 510 | _getIERange: function(){ |
|---|
| 511 | var r = (this._body || this.endContainer.ownerDocument.body).createTextRange(); |
|---|
| 512 | ie.setRange(r, this.startContainer, this.startOffset, this.endContainer, this.endOffset, this.collapsed); |
|---|
| 513 | return r; |
|---|
| 514 | }, |
|---|
| 515 | getBookmark: function(){ |
|---|
| 516 | this._getIERange(); |
|---|
| 517 | return this._cachedBookmark; |
|---|
| 518 | }, |
|---|
| 519 | _select: function(){ |
|---|
| 520 | var r = this._getIERange(); |
|---|
| 521 | r.select(); |
|---|
| 522 | }, |
|---|
| 523 | deleteContents: function(){ |
|---|
| 524 | var s = this.startContainer, r = this._getIERange(); |
|---|
| 525 | if(s.nodeType === 3 && !this.startOffset){ |
|---|
| 526 | //if the range starts at the beginning of a |
|---|
| 527 | //text node, move it to before the textnode |
|---|
| 528 | //to make sure the range is still valid |
|---|
| 529 | //after deleteContents() finishes |
|---|
| 530 | this.setStartBefore(s); |
|---|
| 531 | } |
|---|
| 532 | r.pasteHTML(''); |
|---|
| 533 | this.endContainer = this.startContainer; |
|---|
| 534 | this.endOffset = this.startOffset; |
|---|
| 535 | this.collapsed = true; |
|---|
| 536 | }, |
|---|
| 537 | cloneRange: function(){ |
|---|
| 538 | var r = new W3CRange([this.startContainer,this.startOffset, |
|---|
| 539 | this.endContainer,this.endOffset]); |
|---|
| 540 | r._body = this._body; |
|---|
| 541 | return r; |
|---|
| 542 | }, |
|---|
| 543 | detach: function(){ |
|---|
| 544 | this._body = null; |
|---|
| 545 | this.commonAncestorContainer = null; |
|---|
| 546 | this.startContainer = null; |
|---|
| 547 | this.startOffset = 0; |
|---|
| 548 | this.endContainer = null; |
|---|
| 549 | this.endOffset = 0; |
|---|
| 550 | this.collapsed = true; |
|---|
| 551 | } |
|---|
| 552 | }); |
|---|
| 553 | } //if(!window.getSelection) |
|---|
| 554 | |
|---|
| 555 | // remove for 2.0 |
|---|
| 556 | lang.setObject("dijit.range", rangeapi); |
|---|
| 557 | |
|---|
| 558 | return rangeapi; |
|---|
| 559 | }); |
|---|
