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base-chunk.js
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base-chunk.js
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var ObservStruct = require('mutant/struct')
var Observ = require('mutant/value')
var Property = require('lib/property')
var ArrayGrid = require('array-grid')
var computed = require('mutant/computed')
var extend = require('xtend/mutable')
module.exports = BaseChunk
function BaseChunk (context, extraProperties, opts) {
var broadcastingActiveSlots = false
var obs = ObservStruct(extend({
id: Observ(),
shape: Property([1, 4]),
flags: Property([]),
chokeAll: Property(false),
chokeGroup: Property(),
color: Property([255, 255, 255]),
minimised: Property(false)
}, extraProperties))
if (context.setup) {
obs.selected = computed([obs.id, context.setup.selectedChunkId], function (id, selectedId) {
return id === selectedId
})
}
obs.context = context
obs.activeSlots = Observ([])
obs.triggerOn = function (id, at) {
var slot = context.slotLookup.get(id)
if (obs.chokeGroup()) {
var chokeGroup = resolve(obs.chokeGroup)
context.setup.chunks.forEach(function (chunk) {
var node = chunk.node || chunk
if (node && node !== obs && resolve(node.chokeGroup) === chokeGroup) {
chokeAll(node, at)
}
})
}
if (obs.chokeAll()) {
chokeAll(obs, at)
}
if (slot) {
if (slot().chokeGroup) {
obs.triggers().forEach(function (id) {
var otherSlot = context.slotLookup.get(id)
if (otherSlot && otherSlot !== slot && otherSlot().chokeGroup === slot().chokeGroup) {
otherSlot.choke && otherSlot.choke(at)
}
})
}
slot.triggerOn(at)
}
if (!obs.activeSlots().includes(id)) {
obs.activeSlots().push(id)
broadcastActiveSlots()
}
}
obs.triggerOff = function (id, at) {
var slot = context.slotLookup.get(id)
if (slot) {
slot.triggerOff(at)
}
if (obs.activeSlots().includes(id)) {
obs.activeSlots().splice(obs.activeSlots().indexOf(id), 1)
broadcastActiveSlots()
}
}
obs.choke = function (id, at) {
var slot = context.slotLookup.get(id)
if (slot && slot.choke) {
slot.choke(at)
}
}
obs.getSlot = function (id) {
return context.slotLookup.get(id)
}
obs.triggers = computed([obs.id, obs.shape, context.slotLookup], function (id, shape) {
var length = shape[0] * shape[1]
var result = []
for (var i = 0; i < length; i++) {
if (obs.getSlot(String(i)) || (opts && opts.includedAllTriggers)) {
result.push(String(i))
} else {
result.push(null)
}
}
return result
}, {nextTick: true})
obs.grid = computed([obs.triggers, obs.shape], ArrayGrid)
obs.resolvedGrid = computed([obs.triggers, obs.shape], function (triggers, shape) {
return ArrayGrid(triggers.map(getGlobalId), shape)
})
return obs
// scoped
function broadcastActiveSlots () {
if (!broadcastingActiveSlots) {
broadcastingActiveSlots = true
setImmediate(broadcastActiveSlotsNow)
}
}
function broadcastActiveSlotsNow () {
broadcastingActiveSlots = false
obs.activeSlots.set(obs.activeSlots())
}
function getGlobalId (id) {
if (id) {
return obs.id() + '/' + id
}
}
}
function resolve (val) {
return typeof val === 'function' ? val() : val
}
function chokeAll (node, at) {
if (node && node.shape && node.choke) {
var shape = node.shape()
var length = shape[0] * shape[1]
for (var i = 0; i < length; i++) {
node.choke(String(i), at)
}
}
}