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SVG.Container = function(element) {
this.constructor.call(this, element)
}
// Inherit from SVG.Element
SVG.Container.prototype = new SVG.Element
//
SVG.extend(SVG.Container, {
// 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
}
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
}
// Iterates over all children and invokes a given block
, each: function(block) {
var index,
children = this.children()
for (index = 0, length = children.length; index < length; index++)
if (children[index] instanceof SVG.Shape)
block.apply(children[index], [index, children])
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
}
// Returns defs element
, defs: function() {
return this._defs || (this._defs = this.put(new SVG.Defs, 0))
}
// Re-level defs to first positon in element stack
, level: function() {
return this.removeElement(this.defs()).put(this.defs(), 0)
}
// Create a group element
, group: function() {
return this.put(new SVG.G)
}
// Create a rect element
, rect: function(width, height) {
return this.put(new SVG.Rect().size(width, height))
}
// Create circle element, based on ellipse
, circle: function(size) {
return this.ellipse(size, size)
}
// Create an ellipse
, ellipse: function(width, height) {
return this.put(new SVG.Ellipse().size(width, height).move(0, 0))
}
// Create a line element
, line: function(x1, y1, x2, y2) {
return this.put(new SVG.Line().plot(x1, y1, x2, y2))
}
// Create a wrapped polyline element
, polyline: function(points, unbiased) {
return this.put(new SVG.Polyline(unbiased)).plot(points)
}
// Create a wrapped polygon element
, polygon: function(points, unbiased) {
return this.put(new SVG.Polygon(unbiased)).plot(points)
}
// Create a wrapped path element
, path: function(data, unbiased) {
return this.put(new SVG.Path(unbiased)).plot(data)
}
// Create image element, load image and set its size
, image: function(source, width, height) {
width = width != null ? width : 100
return this.put(new SVG.Image().load(source).size(width, height != null ? height : width))
}
// Create text element
, text: function(text) {
return this.put(new SVG.Text().text(text))
}
// Create nested svg document
, nested: function() {
return this.put(new SVG.Nested)
}
// Create gradient element in defs
, gradient: function(type, block) {
return this.defs().gradient(type, block)
}
// Create pattern element in defs
, pattern: function(width, height, block) {
return this.defs().pattern(width, height, block)
}
// Create masking element
, mask: function() {
return this.defs().put(new SVG.Mask)
}
// Create clipping element
, clip: function() {
return this.defs().put(new SVG.Clip)
}
// Get first child, skipping the defs node
, first: function() {
return this.children()[0] instanceof SVG.Defs ? this.children()[1] : this.children()[0]
}
// Get the last child
, last: function() {
return this.children()[this.children().length - 1]
}
// Get the viewBox and calculate the zoom value
, viewbox: function(v) {
if (arguments.length == 0)
/* act as a getter if there are no arguments */
return new SVG.ViewBox(this)
/* otherwise act as a setter */
v = arguments.length == 1 ?
[v.x, v.y, v.width, v.height] :
[].slice.call(arguments)
return this.attr('viewBox', v.join(' '))
}
// 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.remove()
delete this._defs
}
return this
}
})
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