openaire-library/dashboard/sharedComponents/page-content/page-content.component.ts

65 lines
2.0 KiB
TypeScript

import {AfterViewInit, Component, Input, OnDestroy, OnInit} from "@angular/core";
@Component({
selector: '[page-content]',
template: `
<div id="page_content">
<div id="page_content_header" [attr.uk-sticky]="(headerSticky && shouldSticky)?'media: @m':null" [attr.offset]="offset">
<div class="uk-container uk-container-large">
<div class="uk-padding-small uk-padding-remove-vertical">
<ng-content select="[header]"></ng-content>
</div>
</div>
</div>
<div id="page_content_actions" [attr.uk-sticky]="(!headerSticky && shouldSticky)?'media: @m':null" [attr.offset]="offset">
<div class="uk-container uk-container-large">
<div class="uk-padding-small uk-padding-remove-vertical">
<ng-content select="[actions]"></ng-content>
</div>
</div>
</div>
<div id="page_content_inner" class="uk-container uk-container-large">
<div class="uk-padding-small uk-padding-remove-vertical">
<ng-content select="[inner]"></ng-content>
</div>
</div>
</div>
`,
})
export class PageContentComponent implements OnInit, AfterViewInit, OnDestroy {
@Input()
public headerSticky: boolean = false;
public offset: number;
public shouldSticky: boolean = true;
private observer: IntersectionObserver;
constructor() {
}
ngOnInit() {
if (typeof document !== "undefined") {
this.offset = Number.parseInt(getComputedStyle(document.documentElement).getPropertyValue('--structure-header-height'));
}
}
ngAfterViewInit() {
if(typeof document !== "undefined") {
let bottom = document.getElementById('bottom');
if(bottom) {
this.observer = new IntersectionObserver(entries => {
entries.forEach(entry => {
this.shouldSticky = !entry.isIntersecting;
})
});
this.observer.observe(bottom);
}
}
}
ngOnDestroy() {
if(this.observer) {
this.observer.disconnect();
}
}
}