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@3cp
Last active October 12, 2016 02:47
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valueChanged
<template>
<require from="./line"></require>
<button click.delegate="update()">update</button>
<svg width="100" height="100">
<line
repeat.for="value of values"
value.bind="value"
label.bind="labels[value]"
></line>
</svg>
</template>
export class App {
bind() {
this.values = [1];
this.labels = {"1": 'one', "2": 'two'};
}
update() {
if (this.values[0] === 1) this.values = [2];
else this.values = [1];
}
}
<!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>
<template>
<svg>
<text x="0" y.bind="value * 20">${content}</text>
</svg>
</template>
import {bindable, computedFrom, containerless} from 'aurelia-framework';
let ID = 1;
@containerless()
export class Line {
@bindable value;
@bindable label;
constructor() {
this.id = ID;
ID += 1;
}
// uncomment bind callback will make initial valueChanged unfired
// bind() {}
valueChanged(newV, oldV) {
console.log('value changed from ' + oldV + ' to ' + newV);
}
labelChanged(newV, oldV) {
console.log('label changed from ' + oldV + ' to ' + newV);
}
@computedFrom('value', 'label')
get content() {
const c = this.value + ' : ' + this.label;
console.log('content: ' + c);
return c;
}
attached() {
console.log('attached #' + this.id + ' value:' + this.value + ' label:' + this.label);
}
detached() {
console.log('detached #' + this.id + ' value:' + this.value + ' label:' + this.label);
}
}
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