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116 lines
3.2 KiB
116 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) { |
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return |
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} |
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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) { |
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this.emit('change', unit.name, this.completion[unit.id], unit) |
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} |
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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) { |
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return 0 |
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} |
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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 += |
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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) { |
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this.addUnit(new Tracker(), 1, true) |
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} |
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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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