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Implement WebWorker interface
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parent
020bf1ef65
commit
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3 changed files with 125 additions and 7 deletions
59
src/index.js
59
src/index.js
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@ -34,10 +34,62 @@ function VirtualMachine () {
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instance.flyoutBlockListener = (
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instance.blocks.generateBlockListener(true, instance.runtime)
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);
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// Runtime emits are passed along as VM emits.
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instance.runtime.on(Runtime.STACK_GLOW_ON, function (id) {
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instance.emit(Runtime.STACK_GLOW_ON, {id: id});
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});
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instance.runtime.on(Runtime.STACK_GLOW_OFF, function (id) {
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instance.emit(Runtime.STACK_GLOW_OFF, {id: id});
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});
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instance.runtime.on(Runtime.BLOCK_GLOW_ON, function (id) {
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instance.emit(Runtime.BLOCK_GLOW_ON, {id: id});
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});
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instance.runtime.on(Runtime.BLOCK_GLOW_OFF, function (id) {
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instance.emit(Runtime.BLOCK_GLOW_OFF, {id: id});
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});
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}
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/**
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* Inherit from EventEmitter
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*/
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util.inherits(VirtualMachine, EventEmitter);
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/**
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* Start running the VM - do this before anything else.
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*/
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VirtualMachine.prototype.start = function () {
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this.runtime.start();
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};
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/**
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* "Green flag" handler - start all threads starting with a green flag.
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*/
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VirtualMachine.prototype.greenFlag = function () {
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this.runtime.greenFlag();
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};
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/**
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* Stop all threads and running activities.
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*/
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VirtualMachine.prototype.stopAll = function () {
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this.runtime.stopAll();
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};
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/**
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* Get data for playground. Data comes back in an emitted event.
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*/
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VirtualMachine.prototype.getPlaygroundData = function () {
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this.emit('playgroundData', {
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blocks: this.blocks,
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threads: this.runtime.threads
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});
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};
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/*
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* Worker Handlers
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* Worker handlers: for all public methods available above,
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* we must also provide a message handler in case the VM is run
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* from a worker environment.
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*/
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if (ENV_WORKER) {
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self.vmInstance = new VirtualMachine();
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@ -85,11 +137,6 @@ if (ENV_WORKER) {
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});
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}
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/**
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* Inherit from EventEmitter
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*/
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util.inherits(VirtualMachine, EventEmitter);
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/**
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* Export and bind to `window`
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*/
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70
src/worker.js
Normal file
70
src/worker.js
Normal file
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@ -0,0 +1,70 @@
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var EventEmitter = require('events');
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var util = require('util');
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function VirtualMachine () {
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if (!window.Worker) {
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console.error('WebWorkers not supported in this environment.' +
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' Please use the non-worker version (vm.js or vm.min.js).');
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return;
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}
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var instance = this;
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EventEmitter.call(instance);
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instance.vmWorker = new Worker('../vm.js');
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// onmessage calls are converted into emitted events.
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instance.vmWorker.onmessage = function (e) {
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instance.emit(e.data.method, e.data);
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};
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instance.blockListener = function (e) {
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// Messages from Blockly are not serializable by default.
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// Pull out the necessary, serializable components to pass across.
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var serializableE = {
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blockId: e.blockId,
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element: e.element,
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type: e.type,
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name: e.name,
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newValue: e.newValue,
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oldParentId: e.oldParentId,
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oldInputName: e.oldInputName,
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newParentId: e.newParentId,
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newInputName: e.newInputName,
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xml: {
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outerHTML: (e.xml) ? e.xml.outerHTML : null
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}
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};
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instance.vmWorker.postMessage({
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method: 'blockListener',
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args: serializableE
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});
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};
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}
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/**
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* Inherit from EventEmitter
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*/
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util.inherits(VirtualMachine, EventEmitter);
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// For documentation, please see index.js.
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// These mirror the functionality provided there, with the worker wrapper.
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VirtualMachine.prototype.getPlaygroundData = function () {
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this.vmWorker.postMessage({method: 'getPlaygroundData'});
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};
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VirtualMachine.prototype.start = function () {
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this.vmWorker.postMessage({method: 'start'});
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};
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VirtualMachine.prototype.greenFlag = function () {
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this.vmWorker.postMessage({method: 'greenFlag'});
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};
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VirtualMachine.prototype.stopAll = function () {
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this.vmWorker.postMessage({method: 'stopAll'});
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};
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/**
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* Export and bind to `window`
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*/
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module.exports = VirtualMachine;
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if (typeof window !== 'undefined') window.VirtualMachine = module.exports;
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@ -3,7 +3,8 @@ var webpack = require('webpack');
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module.exports = {
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entry: {
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'vm': './src/index.js',
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'vm.min': './src/index.js'
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'vm.min': './src/index.js',
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'vm.worker': './src/worker.js'
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},
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output: {
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path: __dirname,
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