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collection observer vs observable, splice, replace combo solution
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| <template> | |
| <button click.delegate="addData()">Add Data</button> | |
| <button click.delegate="popData()">Pop Data</button> | |
| <button click.delegate="spliceData()">Splice Data</button> | |
| <button click.delegate="replaceData()">Replace Data</button> | |
| <hr> | |
| Data: | |
| <table> | |
| <tr repeat.for="val of data"> | |
| <td>${val}</td> | |
| </tr> | |
| </table> | |
| <hr> | |
| Log: | |
| <ul> | |
| <li repeat.for="entry of log">${entry}</li> | |
| </ul> | |
| </template> |
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| import {BindingEngine, inject, observable} from 'aurelia-framework'; | |
| @inject(BindingEngine) | |
| export class App { | |
| @observable data = []; | |
| constructor(bindingEngine) { | |
| this.bindingEngine = bindingEngine; | |
| this.log = []; | |
| } | |
| attached() { | |
| this.observeData(); | |
| } | |
| observeData() { | |
| if (this.subscription) { | |
| this.subscription.dispose(); | |
| } | |
| this.subscription = this.bindingEngine | |
| .collectionObserver(this.data) | |
| .subscribe(splices => { | |
| this.dataModified(splices); | |
| }); | |
| } | |
| detached() { | |
| if (this.subscription) { | |
| this.subscription.dispose(); | |
| } | |
| } | |
| dataChanged(newVal) { | |
| this.log.unshift('data changed ' + new Date()); | |
| this.observeData(); | |
| } | |
| dataModified(splices) { | |
| this.log.unshift('data modified ' + new Date()); | |
| } | |
| addData() { | |
| this.data.push(new Date()); | |
| } | |
| popData() { | |
| this.data.pop(); | |
| } | |
| spliceData() { | |
| const rand = Math.floor(Math.random() * this.data.length); | |
| this.data.splice(rand, 1, 'spliced'); | |
| } | |
| replaceData() { | |
| this.data = ['replaced', 'data', 'completely']; | |
| } | |
| } |
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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://jdanyow.github.io/rjs-bundle/node_modules/requirejs/require.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/config.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/aurelia.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/babel.js"></script> | |
| <script> | |
| require(['aurelia-bootstrapper']); | |
| </script> | |
| </body> | |
| </html> |
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