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// ### This module adds backward / forward functionality to elements.
//
SVG.extend(SVG.Element, {
// Get all siblings, including myself
siblings: function () {
return this.parent().children()
},
// Get the curent position siblings
position: function () {
return this.parent().index(this)
},
// Get the next element (will return null if there is none)
next: function () {
return this.siblings()[this.position() + 1]
},
// Get the next element (will return null if there is none)
prev: function () {
return this.siblings()[this.position() - 1]
},
// Send given element one step forward
forward: function () {
var i = this.position() + 1
var p = this.parent()
// move node one step forward
p.removeElement(this).add(this, i)
// make sure defs node is always at the top
if (p instanceof SVG.Doc) {
p.node.appendChild(p.defs().node)
}
return this
},
// Send given element one step backward
backward: function () {
var i = this.position()
if (i > 0) {
this.parent().removeElement(this).add(this, i - 1)
}
return this
},
// Send given element all the way to the front
front: function () {
var p = this.parent()
// Move node forward
p.node.appendChild(this.node)
// Make sure defs node is always at the top
if (p instanceof SVG.Doc) {
p.node.appendChild(p.defs().node)
}
return this
},
// Send given element all the way to the back
back: function () {
if (this.position() > 0) {
this.parent().removeElement(this).add(this, 0)
}
return this
},
// Inserts a given element before the targeted element
before: function (element) {
element.remove()
var i = this.position()
this.parent().add(element, i)
return this
},
// Insters a given element after the targeted element
after: function (element) {
element.remove()
var i = this.position()
this.parent().add(element, i + 1)
return this
}
})
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