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Aurelia two-way binding problem
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| <template> | |
| <require from="./tree"></require> | |
| <h1>The two-way binding problem</h1> | |
| <tree nodes.two-way="fruits"></tree> | |
| <button type="button" click.delegate="changeFruits()">Change fruits</button> | |
| <p repeat.for="message of messages">${message}</p> | |
| </template> |
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| import { observable } from 'aurelia-framework'; | |
| export class App { | |
| @observable fruits = ['apple', 'orange', 'banana']; | |
| messages = []; | |
| messageCount = 0; | |
| changeFruits() { | |
| this.fruits = ['pear', 'apricot']; | |
| } | |
| fruitsChanged(newValue) { | |
| console.log(`Tried to change fruits to ${newValue}`); | |
| } | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Aurelia</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body aurelia-app> | |
| <h1>Loading...</h1> | |
| <script src="https://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/jspm_packages/system.js"></script> | |
| <script src="https://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/config.js"></script> | |
| <script> | |
| System.import('aurelia-bootstrapper'); | |
| </script> | |
| </body> | |
| </html> |
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| <template> | |
| <button type="button" click.delegate="clearNodes()">Clear nodes</button> | |
| <ul> | |
| <li repeat.for="node of nodes">${node}</li> | |
| </ul> | |
| </template> |
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| import { bindable, inject, TaskQueue } from 'aurelia-framework'; | |
| @inject(TaskQueue) | |
| export class Tree { | |
| @bindable nodes; | |
| constructor(taskQueue) { | |
| this.taskQueue = taskQueue; | |
| } | |
| nodesChanged(newValues) { | |
| this.run(() => { | |
| console.log(`We have new nodes: ${newValues}`); | |
| this.selectNodes(newValues.filter(val => val !== 'pear')); | |
| }); | |
| } | |
| run(action) { | |
| if (this.locked) { return; } | |
| action(); | |
| } | |
| clearNodes() { | |
| this.nodes = []; | |
| } | |
| locked = false; | |
| selectNodes(nodes) { | |
| this.locked = true; | |
| this.nodes = nodes.slice(); | |
| this.taskQueue.flushMicroTaskQueue(); | |
| this.locked = false; | |
| } | |
| } |
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