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107 lines
3.2 KiB
107 lines
3.2 KiB
'use strict'
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var util = require('util')
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var TrackerBase = require('./tracker-base.js')
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var Tracker = require('./tracker.js')
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var TrackerStream = require('./tracker-stream.js')
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var TrackerGroup = module.exports = function (name) {
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TrackerBase.call(this, name)
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this.parentGroup = null
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this.trackers = []
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this.completion = {}
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this.weight = {}
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this.totalWeight = 0
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this.finished = false
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this.bubbleChange = bubbleChange(this)
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}
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util.inherits(TrackerGroup, TrackerBase)
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function bubbleChange (trackerGroup) {
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return function (name, completed, tracker) {
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trackerGroup.completion[tracker.id] = completed
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if (trackerGroup.finished) return
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trackerGroup.emit('change', name || trackerGroup.name, trackerGroup.completed(), trackerGroup)
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}
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}
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TrackerGroup.prototype.nameInTree = function () {
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var names = []
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var from = this
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while (from) {
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names.unshift(from.name)
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from = from.parentGroup
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}
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return names.join('/')
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}
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TrackerGroup.prototype.addUnit = function (unit, weight) {
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if (unit.addUnit) {
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var toTest = this
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while (toTest) {
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if (unit === toTest) {
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throw new Error(
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'Attempted to add tracker group ' +
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unit.name + ' to tree that already includes it ' +
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this.nameInTree(this))
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}
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toTest = toTest.parentGroup
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}
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unit.parentGroup = this
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}
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this.weight[unit.id] = weight || 1
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this.totalWeight += this.weight[unit.id]
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this.trackers.push(unit)
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this.completion[unit.id] = unit.completed()
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unit.on('change', this.bubbleChange)
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if (!this.finished) this.emit('change', unit.name, this.completion[unit.id], unit)
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return unit
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}
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TrackerGroup.prototype.completed = function () {
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if (this.trackers.length === 0) return 0
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var valPerWeight = 1 / this.totalWeight
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var completed = 0
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for (var ii = 0; ii < this.trackers.length; ii++) {
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var trackerId = this.trackers[ii].id
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completed += valPerWeight * this.weight[trackerId] * this.completion[trackerId]
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}
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return completed
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}
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TrackerGroup.prototype.newGroup = function (name, weight) {
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return this.addUnit(new TrackerGroup(name), weight)
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}
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TrackerGroup.prototype.newItem = function (name, todo, weight) {
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return this.addUnit(new Tracker(name, todo), weight)
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}
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TrackerGroup.prototype.newStream = function (name, todo, weight) {
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return this.addUnit(new TrackerStream(name, todo), weight)
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}
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TrackerGroup.prototype.finish = function () {
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this.finished = true
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if (!this.trackers.length) this.addUnit(new Tracker(), 1, true)
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for (var ii = 0; ii < this.trackers.length; ii++) {
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var tracker = this.trackers[ii]
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tracker.finish()
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tracker.removeListener('change', this.bubbleChange)
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}
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this.emit('change', this.name, 1, this)
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}
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var buffer = ' '
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TrackerGroup.prototype.debug = function (depth) {
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depth = depth || 0
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var indent = depth ? buffer.substr(0, depth) : ''
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var output = indent + (this.name || 'top') + ': ' + this.completed() + '\n'
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this.trackers.forEach(function (tracker) {
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if (tracker instanceof TrackerGroup) {
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output += tracker.debug(depth + 1)
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} else {
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output += indent + ' ' + tracker.name + ': ' + tracker.completed() + '\n'
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}
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})
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return output
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}
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