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SVG.Parent = function(element) {
this.constructor.call(this, element)
}
// Inherit from SVG.Element
SVG.Parent.prototype = new SVG.Element
//
SVG.extend(SVG.Parent, {
// Returns all child elements
children: function() {
return this._children || (this._children = [])
}
// Add given element at a position
, add: function(element, i) {
if (!this.has(element)) {
/* define insertion index if none given */
i = i == null ? this.children().length : i
/* remove references from previous parent */
if (element.parent) {
var index = element.parent.children().indexOf(element)
element.parent.children().splice(index, 1)
}
/* add element references */
this.children().splice(i, 0, element)
this.node.insertBefore(element.node, this.node.childNodes[i] || null)
element.parent = this
}
/* reposition defs */
if (this._defs) {
this.node.removeChild(this._defs.node)
this.node.appendChild(this._defs.node)
}
return this
}
// Basically does the same as `add()` but returns the added element instead
, put: function(element, i) {
this.add(element, i)
return element
}
// Checks if the given element is a child
, has: function(element) {
return this.children().indexOf(element) >= 0
}
// Get a element at the given index
, get: function(i) {
return this.children()[i]
}
// Get first child, skipping the defs node
, first: function() {
return this.children()[0]
}
// Get the last child
, last: function() {
return this.children()[this.children().length - 1]
}
// Iterates over all children and invokes a given block
, each: function(block, deep) {
var i, il
, children = this.children()
for (i = 0, il = children.length; i < il; i++) {
if (children[i] instanceof SVG.Element)
block.apply(children[i], [i, children])
if (deep && (children[i] instanceof SVG.Container))
children[i].each(block, deep)
}
return this
}
// Remove a child element at a position
, removeElement: function(element) {
var i = this.children().indexOf(element)
this.children().splice(i, 1)
this.node.removeChild(element.node)
element.parent = null
return this
}
// Remove all elements in this container
, clear: function() {
/* remove children */
for (var i = this.children().length - 1; i >= 0; i--)
this.removeElement(this.children()[i])
/* remove defs node */
if (this._defs)
this._defs.clear()
return this
}
, // Get defs
defs: function() {
return this.doc().defs()
}
})
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