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Viewer.MultiModelExtensionBase.js
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Viewer.MultiModelExtensionBase.js
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import EventsEmitter from 'EventsEmitter'
export default class MultiModelExtensionBase extends
EventsEmitter.Composer (Autodesk.Viewing.Extension) {
/////////////////////////////////////////////////////////
// Class constructor
//
/////////////////////////////////////////////////////////
constructor (viewer, options = {}, defaultOptions = {}) {
super (viewer)
// bindings
this.onModelCompletedLoad = this.onModelCompletedLoad.bind(this)
this.onObjectTreeCreated = this.onObjectTreeCreated.bind(this)
this.onModelRootLoaded = this.onModelRootLoaded.bind(this)
this.onExtensionLoaded = this.onExtensionLoaded.bind(this)
this.onModelActivated = this.onModelActivated.bind(this)
this.onGeometryLoaded = this.onGeometryLoaded.bind(this)
this.onToolbarCreated = this.onToolbarCreated.bind(this)
this.onModelBeginLoad = this.onModelBeginLoad.bind(this)
this.onModelUnloaded = this.onModelUnloaded.bind(this)
this.onSelection = this.onSelection.bind(this)
this.__onModelRootLoaded = this.__onModelRootLoaded.bind(this)
this.__onModelActivated = this.__onModelActivated.bind(this)
this.__onModelUnloaded = this.__onModelUnloaded.bind(this)
this.__onModelLoaded = this.__onModelLoaded.bind(this)
this.defaultOptions = defaultOptions
this.options = Object.assign({},
defaultOptions,
options)
this.viewer = viewer
// read the modelQueue to detect currently loaded models
// when the extension gets loaded
const models = viewer.impl.modelQueue().getModels()
this.models = models.map((model) => {
model.guid = model.guid || this.guid()
return model
})
this.initializeEvents ()
}
/////////////////////////////////////////////////////////
// Extension Id
//
/////////////////////////////////////////////////////////
static get ExtensionId() {
return 'Viewing.Extension.MultiModelExtensionBase'
}
/////////////////////////////////////////////////////////
// Load callback
//
/////////////////////////////////////////////////////////
load () {
return true
}
/////////////////////////////////////////////////////////
// Unload callback
//
/////////////////////////////////////////////////////////
unload () {
this.viewerEvents.forEach((event) => {
this.viewer.removeEventListener(
event.id, this[event.handler])
})
if (this.eventSink) {
this.eventSink.off('model.activated',
this.__onModelActivated)
this.eventSink.off('model.unloaded',
this.__onModelUnloaded)
this.eventSink.off('model.loaded',
this.__onModelLoaded)
}
this.off()
return true
}
/////////////////////////////////////////////////////////
// Reload callback, in case the extension is re-loaded
// more than once
//
/////////////////////////////////////////////////////////
reload (options = {}) {
this.options = Object.assign({},
this.defaultOptions,
this.options,
options)
return true
}
/////////////////////////////////////////////////////////
// Invoked when extension gets loaded
//
/////////////////////////////////////////////////////////
onExtensionLoaded (event) {
//console.log('MultiModelExtensionBase.onExtensionLoaded')
}
/////////////////////////////////////////////////////////
// Invoked when the model starts to load
// The geometry and instanceTree may not be available
// at this time
//
/////////////////////////////////////////////////////////
onModelBeginLoad (event) {
//console.log('MultiModelExtensionBase.onModelBeginLoad')
}
/////////////////////////////////////////////////////////
// Triggered by ModelLoader extension when a model is
// selected in a multi-model environment
//
/////////////////////////////////////////////////////////
onModelActivated (event) {
//console.log('MultiModelExtensionBase.onModelActivated')
}
/////////////////////////////////////////////////////////
// Invoked when model root node has been loaded
// Extensions that do require access to full
// model geometry or component tree may use that
// event to know a new model has been loaded
//
/////////////////////////////////////////////////////////
__onModelRootLoaded (event) {
this.viewerEvent([
Autodesk.Viewing.OBJECT_TREE_CREATED_EVENT,
Autodesk.Viewing.GEOMETRY_LOADED_EVENT
]).then((args) => {
this.onModelCompletedLoad (args[0])
})
}
onModelRootLoaded (event) {
//console.log('MultiModelExtensionBase.onModelRootLoaded')
}
/////////////////////////////////////////////////////////
// Invoked when object tree is fully loaded.
// Extensions that are interested in using the
// instanceTree need to use that event to make sure
// it is available
//
////////////////////////////////////////////////////////
onObjectTreeCreated (event) {
//console.log('MultiModelExtensionBase.onObjectTreeCreated')
}
/////////////////////////////////////////////////////////
// Invoked when geometry is fully loaded
//
/////////////////////////////////////////////////////////
onGeometryLoaded (event) {
//console.log('MultiModelExtensionBase.onGeometryLoaded')
}
/////////////////////////////////////////////////////////
// Invoked after onObjectTreeCreated and onGeometryLoaded
// have both been fired
//
/////////////////////////////////////////////////////////
onModelCompletedLoad (event) {
//console.log('MultiModelExtensionBase.onModelCompletedLoad')
}
/////////////////////////////////////////////////////////
// Invoked once the viewer toolbar has been created
//
/////////////////////////////////////////////////////////
onToolbarCreated (event) {
//console.log('MultiModelExtensionBase.onToolbarCreated')
}
/////////////////////////////////////////////////////////
// Triggered by ModelLoader extension when a model has
// been unloaded as per user request
//
/////////////////////////////////////////////////////////
onModelUnloaded (event) {
//console.log('MultiModelExtensionBase.onModelUnloaded')
}
/////////////////////////////////////////////////////////
// Invoked when a model is being selected
//
/////////////////////////////////////////////////////////
onSelection (event) {
//console.log('MultiModelExtensionBase.onSelection')
}
/////////////////////////////////////////////////////////
//Sink Events
//
/////////////////////////////////////////////////////////
__onModelLoaded (event) {
this.models = [...this.models, event.model]
this.onModelBeginLoad (event)
}
__onModelActivated (event) {
this.onModelActivated (event)
}
__onModelUnloaded (event) {
this.models = this.models.filter((model) => {
return model.guid !== event.model.guid
})
this.onModelUnloaded(event)
}
/////////////////////////////////////////////////////////
// Initialize all events for the extension
// Each event will invoke a predefined handler
// implemented or not by the derived extension
//
/////////////////////////////////////////////////////////
initializeEvents () {
if (this.options.eventSink) {
// event object passed in options
this.eventSink = this.options.eventSink
this.eventSink.on('model.loaded',
this.__onModelLoaded)
this.eventSink.on('model.activated',
this.__onModelActivated)
this.eventSink.on('model.unloaded',
this.__onModelUnloaded)
}
this.viewerEvents = [
{
id: Autodesk.Viewing.EXTENSION_LOADED_EVENT,
handler: 'onExtensionLoaded'
},
{
id: Autodesk.Viewing.OBJECT_TREE_CREATED_EVENT,
handler: 'onObjectTreeCreated'
},
{
id: Autodesk.Viewing.MODEL_ROOT_LOADED_EVENT,
handler: '__onModelRootLoaded'
},
{
id: Autodesk.Viewing.MODEL_ROOT_LOADED_EVENT,
handler: 'onModelRootLoaded'
},
{
id: Autodesk.Viewing.GEOMETRY_LOADED_EVENT,
handler: 'onGeometryLoaded'
},
{
id: Autodesk.Viewing.TOOLBAR_CREATED_EVENT,
handler: 'onToolbarCreated'
},
{
id: Autodesk.Viewing.AGGREGATE_SELECTION_CHANGED_EVENT,
handler: 'onSelection'
}
]
this.viewerEvents.forEach((event) => {
this.viewerEvent(event.id, this[event.handler])
})
}
/////////////////////////////////////////////////////////
// Async viewer event
//
/////////////////////////////////////////////////////////
viewerEvent (eventId, handler) {
if (handler) {
this.viewer.addEventListener (eventId, handler)
return
}
const eventIdArray = Array.isArray(eventId)
? eventId : [eventId]
const eventTasks = eventIdArray.map((id) => {
return new Promise ((resolve) => {
const __handler = (args) => {
this.viewer.removeEventListener (id, __handler)
resolve (args)
}
this.viewer.addEventListener (id, __handler)
})
})
return Promise.all (eventTasks)
}
}