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// The main wrapping element
var SVG = this.SVG = function(element) {
if (SVG.supported) {
element = createElement(element)
return element
}
}
// Default namespaces
SVG.ns = 'http://www.w3.org/2000/svg'
SVG.xmlns = 'http://www.w3.org/2000/xmlns/'
SVG.xlink = 'http://www.w3.org/1999/xlink'
SVG.svgjs = 'http://svgjs.com/svgjs'
// Svg support test
SVG.supported = (function() {
return !! document.createElementNS &&
!! document.createElementNS(SVG.ns,'svg').createSVGRect
})()
// Don't bother to continue if SVG is not supported
if (!SVG.supported) return false
// Element id sequence
SVG.did = 1000
// Get next named element id
SVG.eid = function(name) {
return 'Svgjs' + capitalize(name) + (SVG.did++)
}
// Method for element creation
SVG.create = function(name) {
// create element
return document.createElementNS(this.ns, name)
}
// Method for extending objects
SVG.extend = function(modules, methods) {
var key, i
modules = Array.isArray(modules) ? modules : [modules]
for (i = modules.length - 1; i >= 0; i--)
if (modules[i])
for (key in methods)
modules[i].prototype[key] = methods[key]
}
// Invent new element
SVG.invent = function(config) {
// Create element initializer
var initializer = typeof config.create == 'function' ?
config.create :
function(node) {
this.constructor.call(this, node || SVG.create(config.create))
}
// Inherit prototype
if (config.inherit)
initializer.prototype = new config.inherit
// Extend with methods
if (config.extend)
SVG.extend(initializer, config.extend)
// Attach construct method to parent
if (config.construct)
SVG.extend(config.parent || SVG.Container, config.construct)
return initializer
}
// Adopt existing svg elements
SVG.adopt = function(node) {
// check for presence of node
if (!node) return null
// make sure a node isn't already adopted
if (node.instance) return node.instance
if(!(node instanceof window.SVGElement))
return new SVG.HtmlNode(node)
// initialize variables
var element
// adopt with element-specific settings
if (node.nodeName == 'svg')
element = node.parentNode instanceof window.SVGElement ? new SVG.Nested(node) : new SVG.Doc(node)
else if (node.nodeName == 'linearGradient' || node.nodeName == 'radialGradient')
element = new SVG.Gradient(node)
else if (SVG[capitalize(node.nodeName)])
element = new SVG[capitalize(node.nodeName)](node)
else
element = new SVG.Parent(node)
return element
}
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