1 | /*! |
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2 | * Ext JS Library 3.4.0 |
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3 | * Copyright(c) 2006-2011 Sencha Inc. |
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4 | * licensing@sencha.com |
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5 | * http://www.sencha.com/license |
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6 | */ |
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7 | /** |
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8 | * @class Ext.Element |
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9 | */ |
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10 | Ext.Element.addMethods(function(){ |
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11 | var PARENTNODE = 'parentNode', |
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12 | NEXTSIBLING = 'nextSibling', |
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13 | PREVIOUSSIBLING = 'previousSibling', |
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14 | DQ = Ext.DomQuery, |
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15 | GET = Ext.get; |
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16 | |
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17 | return { |
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18 | /** |
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19 | * Looks at this node and then at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child) |
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20 | * @param {String} selector The simple selector to test |
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21 | * @param {Number/Mixed} maxDepth (optional) The max depth to search as a number or element (defaults to 50 || document.body) |
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22 | * @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node |
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23 | * @return {HTMLElement} The matching DOM node (or null if no match was found) |
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24 | */ |
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25 | findParent : function(simpleSelector, maxDepth, returnEl){ |
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26 | var p = this.dom, |
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27 | b = document.body, |
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28 | depth = 0, |
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29 | stopEl; |
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30 | if(Ext.isGecko && Object.prototype.toString.call(p) == '[object XULElement]') { |
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31 | return null; |
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32 | } |
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33 | maxDepth = maxDepth || 50; |
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34 | if (isNaN(maxDepth)) { |
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35 | stopEl = Ext.getDom(maxDepth); |
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36 | maxDepth = Number.MAX_VALUE; |
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37 | } |
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38 | while(p && p.nodeType == 1 && depth < maxDepth && p != b && p != stopEl){ |
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39 | if(DQ.is(p, simpleSelector)){ |
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40 | return returnEl ? GET(p) : p; |
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41 | } |
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42 | depth++; |
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43 | p = p.parentNode; |
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44 | } |
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45 | return null; |
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46 | }, |
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47 | |
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48 | /** |
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49 | * Looks at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child) |
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50 | * @param {String} selector The simple selector to test |
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51 | * @param {Number/Mixed} maxDepth (optional) The max depth to |
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52 | search as a number or element (defaults to 10 || document.body) |
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53 | * @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node |
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54 | * @return {HTMLElement} The matching DOM node (or null if no match was found) |
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55 | */ |
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56 | findParentNode : function(simpleSelector, maxDepth, returnEl){ |
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57 | var p = Ext.fly(this.dom.parentNode, '_internal'); |
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58 | return p ? p.findParent(simpleSelector, maxDepth, returnEl) : null; |
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59 | }, |
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60 | |
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61 | /** |
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62 | * Walks up the dom looking for a parent node that matches the passed simple selector (e.g. div.some-class or span:first-child). |
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63 | * This is a shortcut for findParentNode() that always returns an Ext.Element. |
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64 | * @param {String} selector The simple selector to test |
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65 | * @param {Number/Mixed} maxDepth (optional) The max depth to |
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66 | search as a number or element (defaults to 10 || document.body) |
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67 | * @return {Ext.Element} The matching DOM node (or null if no match was found) |
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68 | */ |
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69 | up : function(simpleSelector, maxDepth){ |
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70 | return this.findParentNode(simpleSelector, maxDepth, true); |
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71 | }, |
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72 | |
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73 | /** |
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74 | * Creates a {@link Ext.CompositeElement} for child nodes based on the passed CSS selector (the selector should not contain an id). |
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75 | * @param {String} selector The CSS selector |
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76 | * @return {CompositeElement/CompositeElementLite} The composite element |
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77 | */ |
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78 | select : function(selector){ |
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79 | return Ext.Element.select(selector, this.dom); |
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80 | }, |
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81 | |
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82 | /** |
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83 | * Selects child nodes based on the passed CSS selector (the selector should not contain an id). |
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84 | * @param {String} selector The CSS selector |
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85 | * @return {Array} An array of the matched nodes |
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86 | */ |
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87 | query : function(selector){ |
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88 | return DQ.select(selector, this.dom); |
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89 | }, |
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90 | |
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91 | /** |
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92 | * Selects a single child at any depth below this element based on the passed CSS selector (the selector should not contain an id). |
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93 | * @param {String} selector The CSS selector |
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94 | * @param {Boolean} returnDom (optional) True to return the DOM node instead of Ext.Element (defaults to false) |
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95 | * @return {HTMLElement/Ext.Element} The child Ext.Element (or DOM node if returnDom = true) |
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96 | */ |
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97 | child : function(selector, returnDom){ |
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98 | var n = DQ.selectNode(selector, this.dom); |
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99 | return returnDom ? n : GET(n); |
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100 | }, |
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101 | |
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102 | /** |
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103 | * Selects a single *direct* child based on the passed CSS selector (the selector should not contain an id). |
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104 | * @param {String} selector The CSS selector |
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105 | * @param {Boolean} returnDom (optional) True to return the DOM node instead of Ext.Element (defaults to false) |
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106 | * @return {HTMLElement/Ext.Element} The child Ext.Element (or DOM node if returnDom = true) |
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107 | */ |
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108 | down : function(selector, returnDom){ |
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109 | var n = DQ.selectNode(" > " + selector, this.dom); |
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110 | return returnDom ? n : GET(n); |
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111 | }, |
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112 | |
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113 | /** |
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114 | * Gets the parent node for this element, optionally chaining up trying to match a selector |
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115 | * @param {String} selector (optional) Find a parent node that matches the passed simple selector |
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116 | * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element |
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117 | * @return {Ext.Element/HTMLElement} The parent node or null |
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118 | */ |
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119 | parent : function(selector, returnDom){ |
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120 | return this.matchNode(PARENTNODE, PARENTNODE, selector, returnDom); |
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121 | }, |
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122 | |
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123 | /** |
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124 | * Gets the next sibling, skipping text nodes |
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125 | * @param {String} selector (optional) Find the next sibling that matches the passed simple selector |
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126 | * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element |
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127 | * @return {Ext.Element/HTMLElement} The next sibling or null |
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128 | */ |
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129 | next : function(selector, returnDom){ |
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130 | return this.matchNode(NEXTSIBLING, NEXTSIBLING, selector, returnDom); |
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131 | }, |
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132 | |
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133 | /** |
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134 | * Gets the previous sibling, skipping text nodes |
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135 | * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector |
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136 | * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element |
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137 | * @return {Ext.Element/HTMLElement} The previous sibling or null |
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138 | */ |
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139 | prev : function(selector, returnDom){ |
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140 | return this.matchNode(PREVIOUSSIBLING, PREVIOUSSIBLING, selector, returnDom); |
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141 | }, |
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142 | |
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143 | |
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144 | /** |
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145 | * Gets the first child, skipping text nodes |
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146 | * @param {String} selector (optional) Find the next sibling that matches the passed simple selector |
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147 | * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element |
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148 | * @return {Ext.Element/HTMLElement} The first child or null |
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149 | */ |
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150 | first : function(selector, returnDom){ |
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151 | return this.matchNode(NEXTSIBLING, 'firstChild', selector, returnDom); |
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152 | }, |
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153 | |
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154 | /** |
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155 | * Gets the last child, skipping text nodes |
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156 | * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector |
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157 | * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element |
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158 | * @return {Ext.Element/HTMLElement} The last child or null |
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159 | */ |
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160 | last : function(selector, returnDom){ |
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161 | return this.matchNode(PREVIOUSSIBLING, 'lastChild', selector, returnDom); |
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162 | }, |
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163 | |
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164 | matchNode : function(dir, start, selector, returnDom){ |
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165 | var n = this.dom[start]; |
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166 | while(n){ |
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167 | if(n.nodeType == 1 && (!selector || DQ.is(n, selector))){ |
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168 | return !returnDom ? GET(n) : n; |
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169 | } |
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170 | n = n[dir]; |
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171 | } |
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172 | return null; |
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173 | } |
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174 | }; |
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175 | }()); |
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