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SVG.Doc = SVG.invent({
// Initialize node
create: function(element) {
if (element) {
/* ensure the presence of a dom element */
element = typeof element == 'string' ?
document.getElementById(element) :
element
/* If the target is an svg element, use that element as the main wrapper.
This allows svg.js to work with svg documents as well. */
if (element.nodeName == 'svg') {
this.constructor.call(this, element)
} else {
this.constructor.call(this, SVG.create('svg'))
element.appendChild(this.node)
}
/* set svg element attributes and ensure defs node */
this.namespace().size('100%', '100%').defs()
}
}
// Inherit from
, inherit: SVG.Container
// Add class methods
, extend: {
// Add namespaces
namespace: function() {
return this
.attr({ xmlns: SVG.ns, version: '1.1' })
.attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
}
// Creates and returns defs element
, defs: function() {
if (!this._defs) {
var defs
// Find or create a defs element in this instance
if (defs = this.node.getElementsByTagName('defs')[0])
this._defs = SVG.adopt(defs)
else
this._defs = new SVG.Defs
// Make sure the defs node is at the end of the stack
this.node.appendChild(this._defs.node)
}
return this._defs
}
// custom parent method
, parent: function() {
return this.node.parentNode.nodeName == '#document' ? null : this.node.parentNode
}
}
})
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