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January 29, 2018 23:25
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controller factory, event delegation angularJs
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angular | |
.module('myApp', []) | |
.factory('DataFactory', function DataFactory($q) { | |
return { | |
getData() { | |
return $q.when([ | |
{id: 1, name: 'A'}, | |
{id: 2, name: 'B'}, | |
{id: 3, name: 'C'}, | |
{id: 4, name: 'D'}, | |
{id: 5, name: 'E'}, | |
{id: 6, name: 'F'}, | |
{id: 7, name: 'G'}, | |
{id: 8, name: 'H'}, | |
{id: 9, name: 'I'}, | |
{id: 10, name: 'J'}, | |
{id: 11, name: 'K'}, | |
{id: 12, name: 'L'}, | |
{id: 13, name: 'M'}, | |
{id: 14, name: 'N'}, | |
{id: 15, name: 'O'}, | |
{id: 16, name: 'P'}, | |
{id: 17, name: 'Q'}, | |
{id: 18, name: 'R'}, | |
{id: 19, name: 'S'}, | |
{id: 20, name: 'T'}, | |
{id: 21, name: 'U'}, | |
{id: 22, name: 'V'}, | |
{id: 23, name: 'W'}, | |
{id: 24, name: 'X'}, | |
{id: 25, name: 'Y'}, | |
{id: 26, name: 'Z'}, | |
{id: 27, name: 'AA'}, | |
{id: 28, name: 'AB'}, | |
{id: 29, name: 'AC'}, | |
{id: 30, name: 'AD'}, | |
{id: 31, name: 'AE'}, | |
{id: 32, name: 'AF'}, | |
{id: 33, name: 'AG'}, | |
{id: 34, name: 'AH'}, | |
{id: 35, name: 'AI'}, | |
{id: 36, name: 'AJ'}, | |
{id: 37, name: 'AK'}, | |
{id: 38, name: 'AL'}, | |
{id: 39, name: 'AM'}, | |
{id: 40, name: 'AN'}, | |
]); | |
} | |
}; | |
}) | |
.component('rootComponent', { | |
template: ` | |
<div class='root-component__container' ng-if='$ctrl.isLoading'> | |
<span>Loading...</span> | |
</div> | |
<div class='root-component__container' ng-if='!$ctrl.isLoading'> | |
<h4 class='root-component__title'>My Example App</h4> | |
<list-component></list-component> | |
</div> | |
`, | |
controller($timeout) { | |
class RootComponent { | |
$onInit() { | |
this.isLoading = true; | |
$timeout(() => { | |
// fake delay | |
this.isLoading = false; | |
}, 1000); | |
} | |
} | |
return new RootComponent(); | |
} | |
}) | |
.component('listComponent', { | |
template: ` | |
<table class='list-component__table'> | |
<thead class='list-component__thead'> | |
<tr> | |
<th>ID</th> | |
<th>Name</th> | |
</tr> | |
</thead> | |
<tbody class='list-component__tbody' ng-click='$ctrl.delegateDelete($event)'> | |
<tr id='{{item.id}}' class='list-component__tbody-row' ng-repeat='item in $ctrl.data track by item.id'> | |
<td ng-bind='item.id'></td> | |
<td ng-bind='item.name'></td> | |
</tr> | |
</tbody> | |
</table> | |
`, | |
controller(DataFactory) { | |
// controller doesn't have the dependencies bound to `this.` | |
// list items don't have each an event listener ng-click | |
// using event delegation. | |
// controllers don't have the methods declared inside the constructor, | |
// using prototype. | |
class ListComponent { | |
$onInit() { | |
DataFactory.getData().then(data => { | |
this.data = data; | |
}); | |
} | |
delegateDelete({ target }) { | |
const itemId = target.closest('tr.list-component__tbody-row').id; | |
this.data = this.data.filter(({ id }) => id !== parseInt(itemId)) | |
} | |
} | |
return new ListComponent(); | |
} | |
}); |
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