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import {Path, Text, PathArray} from './classes.js'
import {nodeOrNew} from './tools.js'
import {xlink} from './namespaces.js'
export default class TextPath extends Text {
// Initialize node
constructor (node) {
super(nodeOrNew('textPath', node))
}
// return the array of the path track element
array () {
var track = this.track()
return track ? track.array() : null
}
// Plot path if any
plot (d) {
var track = this.track()
var pathArray = null
if (track) {
pathArray = track.plot(d)
}
return (d == null) ? pathArray : this
}
// Get the path element
track () {
return this.reference('href')
}
}
addFactory(Parent, {
textPath (text, path) {
return this.defs().path(path).text(text).addTo(this)
}
})
extend([Text], {
// Create path for text to run on
path: function (track) {
var path = new TextPath()
// if d is a path, reuse it
if (!(track instanceof Path)) {
// create path element
track = this.doc().defs().path(track)
}
// link textPath to path and add content
path.attr('href', '#' + track, xlink)
// add textPath element as child node and return textPath
return this.put(path)
},
// FIXME: make this plural?
// Get the textPath children
textPath: function () {
return this.select('textPath')
}
})
extend([Path], {
// creates a textPath from this path
text: function (text) {
if (text instanceof Text) {
var txt = text.text()
return text.clear().path(this).text(txt)
}
return this.parent().put(new Text()).path(this).text(text)
}
// FIXME: Maybe add `targets` to get all textPaths associated with this path
})
TextPath.prototype.MorphArray = PathArray
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