88 lines
2.5 KiB
TypeScript
88 lines
2.5 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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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 { Directive, ElementRef, OnDestroy, OnInit } from '@angular/core';
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import { CoreCancellablePromise } from '@classes/cancellable-promise';
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import { CoreDom } from '@singletons/dom';
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/**
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* Directive to move ion-fab components as direct children of the nearest ion-content.
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*
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* Example usage:
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*
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* <ion-fab core-fab>
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*/
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@Directive({
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selector: 'ion-fab[core-fab]',
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})
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export class CoreFabDirective implements OnInit, OnDestroy {
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protected element: HTMLElement;
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protected content?: HTMLIonContentElement | null;
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protected initialPaddingBottom = 0;
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protected slotPromise?: CoreCancellablePromise<void>;
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constructor(el: ElementRef) {
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this.element = el.nativeElement;
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}
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/**
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* @inheritdoc
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*/
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async ngOnInit(): Promise<void> {
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this.slotPromise = CoreDom.slotOnContent(this.element);
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await this.slotPromise;
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this.content = this.element.closest('ion-content');
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if (!this.content) {
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return;
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}
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// Add space at the bottom to let the user see the whole content.
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this.initialPaddingBottom = parseFloat(this.content.style.getPropertyValue('--padding-bottom') || '0');
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await this.calculatePlace();
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CoreDom.onElementSlot(this.element, () => {
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this.calculatePlace();
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});
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}
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/**
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* Calculate the height of the footer.
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*/
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protected async calculatePlace(): Promise<void> {
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if (!this.content) {
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return;
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}
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const initialHeight = this.element.getBoundingClientRect().height || 56;
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this.content.style.setProperty('--padding-bottom', this.initialPaddingBottom + initialHeight + 'px');
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}
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/**
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* @inheritdoc
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*/
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ngOnDestroy(): void {
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this.element.remove();
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if (this.content) {
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this.content.style.setProperty('--padding-bottom', this.initialPaddingBottom + 'px');
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}
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this.slotPromise?.cancel();
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}
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}
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