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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for * full list of contributors). Published under the Clear BSD license. * See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * Namespace: OpenLayers.Element */ OpenLayers.Element = { /** * APIFunction: visible * * Parameters: * element - {DOMElement} * * Returns: * {Boolean} Is the element visible? */ visible: function(element) { return OpenLayers.Util.getElement(element).style.display != 'none'; }, /** * APIFunction: toggle * Toggle the visibility of element(s) passed in * * Parameters: * element - {DOMElement} Actually user can pass any number of elements */ toggle: function() { for (var i=0, len=arguments.length; i<len; i++) { var element = OpenLayers.Util.getElement(arguments[i]); var display = OpenLayers.Element.visible(element) ? 'hide' : 'show'; OpenLayers.Element[display](element); } }, /** * APIFunction: hide * Hide element(s) passed in * * Parameters: * element - {DOMElement} Actually user can pass any number of elements */ hide: function() { for (var i=0, len=arguments.length; i<len; i++) { var element = OpenLayers.Util.getElement(arguments[i]); if (element) { element.style.display = 'none'; } } }, /** * APIFunction: show * Show element(s) passed in * * Parameters: * element - {DOMElement} Actually user can pass any number of elements */ show: function() { for (var i=0, len=arguments.length; i<len; i++) { var element = OpenLayers.Util.getElement(arguments[i]); if (element) { element.style.display = ''; } } }, /** * APIFunction: remove * Remove the specified element from the DOM. * * Parameters: * element - {DOMElement} */ remove: function(element) { element = OpenLayers.Util.getElement(element); element.parentNode.removeChild(element); }, /** * APIFunction: getHeight * * Parameters: * element - {DOMElement} * * Returns: * {Integer} The offset height of the element passed in */ getHeight: function(element) { element = OpenLayers.Util.getElement(element); return element.offsetHeight; }, /** * APIFunction: getDimensions * *Deprecated*. Returns dimensions of the element passed in. * * Parameters: * element - {DOMElement} * * Returns: * {Object} Object with 'width' and 'height' properties which are the * dimensions of the element passed in. */ getDimensions: function(element) { element = OpenLayers.Util.getElement(element); if (OpenLayers.Element.getStyle(element, 'display') != 'none') { return {width: element.offsetWidth, height: element.offsetHeight}; } // All *Width and *Height properties give 0 on elements with display none, // so enable the element temporarily var els = element.style; var originalVisibility = els.visibility; var originalPosition = els.position; var originalDisplay = els.display; els.visibility = 'hidden'; els.position = 'absolute'; els.display = ''; var originalWidth = element.clientWidth; var originalHeight = element.clientHeight; els.display = originalDisplay; els.position = originalPosition; els.visibility = originalVisibility; return {width: originalWidth, height: originalHeight}; }, /** * Function: hasClass * Tests if an element has the given CSS class name. * * Parameters: * element - {DOMElement} A DOM element node. * name - {String} The CSS class name to search for. * * Returns: * {Boolean} The element has the given class name. */ hasClass: function(element, name) { var names = element.className; return (!!names && new RegExp("(^|\\s)" + name + "(\\s|$)").test(names)); }, /** * Function: addClass * Add a CSS class name to an element. Safe where element already has * the class name. * * Parameters: * element - {DOMElement} A DOM element node. * name - {String} The CSS class name to add. * * Returns: * {DOMElement} The element. */ addClass: function(element, name) { if(!OpenLayers.Element.hasClass(element, name)) { element.className += (element.className ? " " : "") + name; } return element; }, /** * Function: removeClass * Remove a CSS class name from an element. Safe where element does not * have the class name. * * Parameters: * element - {DOMElement} A DOM element node. * name - {String} The CSS class name to remove. * * Returns: * {DOMElement} The element. */ removeClass: function(element, name) { var names = element.className; if(names) { element.className = OpenLayers.String.trim( names.replace( new RegExp("(^|\\s+)" + name + "(\\s+|$)"), " " ) ); } return element; }, /** * Function: toggleClass * Remove a CSS class name from an element if it exists. Add the class name * if it doesn't exist. * * Parameters: * element - {DOMElement} A DOM element node. * name - {String} The CSS class name to toggle. * * Returns: * {DOMElement} The element. */ toggleClass: function(element, name) { if(OpenLayers.Element.hasClass(element, name)) { OpenLayers.Element.removeClass(element, name); } else { OpenLayers.Element.addClass(element, name); } return element; }, /** * APIFunction: getStyle * * Parameters: * element - {DOMElement} * style - {?} * * Returns: * {?} */ getStyle: function(element, style) { element = OpenLayers.Util.getElement(element); var value = null; if (element && element.style) { value = element.style[OpenLayers.String.camelize(style)]; if (!value) { if (document.defaultView && document.defaultView.getComputedStyle) { var css = document.defaultView.getComputedStyle(element, null); value = css ? css.getPropertyValue(style) : null; } else if (element.currentStyle) { value = element.currentStyle[OpenLayers.String.camelize(style)]; } } var positions = ['left', 'top', 'right', 'bottom']; if (window.opera && (OpenLayers.Util.indexOf(positions,style) != -1) && (OpenLayers.Element.getStyle(element, 'position') == 'static')) { value = 'auto'; } } return value == 'auto' ? null : value; } }; |