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openlayers

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Build tools and sources for developing OpenLayers based mapping applications

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goog.provide('ol.dom'); /** * Create an html canvas element and returns its 2d context. * @param {number=} opt_width Canvas width. * @param {number=} opt_height Canvas height. * @return {CanvasRenderingContext2D} The context. */ ol.dom.createCanvasContext2D = function(opt_width, opt_height) { var canvas = document.createElement('CANVAS'); if (opt_width) { canvas.width = opt_width; } if (opt_height) { canvas.height = opt_height; } return canvas.getContext('2d'); }; /** * Get the current computed width for the given element including margin, * padding and border. * Equivalent to jQuery's `$(el).outerWidth(true)`. * @param {!Element} element Element. * @return {number} The width. */ ol.dom.outerWidth = function(element) { var width = element.offsetWidth; var style = element.currentStyle || getComputedStyle(element); width += parseInt(style.marginLeft, 10) + parseInt(style.marginRight, 10); return width; }; /** * Get the current computed height for the given element including margin, * padding and border. * Equivalent to jQuery's `$(el).outerHeight(true)`. * @param {!Element} element Element. * @return {number} The height. */ ol.dom.outerHeight = function(element) { var height = element.offsetHeight; var style = element.currentStyle || getComputedStyle(element); height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10); return height; }; /** * @param {Node} newNode Node to replace old node * @param {Node} oldNode The node to be replaced */ ol.dom.replaceNode = function(newNode, oldNode) { var parent = oldNode.parentNode; if (parent) { parent.replaceChild(newNode, oldNode); } }; /** * @param {Node} node The node to remove. * @returns {Node} The node that was removed or null. */ ol.dom.removeNode = function(node) { return node && node.parentNode ? node.parentNode.removeChild(node) : null; }; /** * @param {Node} node The node to remove the children from. */ ol.dom.removeChildren = function(node) { while (node.lastChild) { node.removeChild(node.lastChild); } };