69 lines
2.1 KiB
TypeScript
69 lines
2.1 KiB
TypeScript
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// (C) Copyright 2015 Martin Dougiamas
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { Component, Input, Output, EventEmitter } from '@angular/core';
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import { InfiniteScroll } from 'ionic-angular';
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/**
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* Component to show a infinite loading trigger and spinner while more data is being loaded.
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*
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* Usage:
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* <core-infinite-loading [action]="loadingAction" [enabled]="dataLoaded"></core-inifinite-loading>
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*/
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@Component({
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selector: 'core-infinite-loading',
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templateUrl: 'core-infinite-loading.html',
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})
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export class CoreInfiniteLoadingComponent {
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@Input() enabled: boolean;
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@Input() position = 'bottom';
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@Output() action: EventEmitter<() => void>; // Will emit an event when triggered.
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loadingMore = false; // Hide button and avoid loading more.
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protected infiniteScroll: InfiniteScroll;
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constructor() {
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this.action = new EventEmitter();
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}
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/**
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* Load More items calling the action provided.
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*
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* @param {InfiniteScroll} [infiniteScroll] Infinite scroll object only if triggered from the scroll.
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*/
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loadMore(infiniteScroll?: InfiniteScroll): void {
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if (this.loadingMore) {
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return;
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}
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if (infiniteScroll) {
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this.infiniteScroll = infiniteScroll;
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}
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this.loadingMore = true;
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this.action.emit(this.complete.bind(this));
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}
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/**
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* Complete loading.
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*/
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complete(): void {
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this.loadingMore = false;
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this.infiniteScroll && this.infiniteScroll.complete();
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this.infiniteScroll = undefined;
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}
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}
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