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MOBILE-3814 collapsible: Observe original title mutation

main
Pau Ferrer Ocaña 2022-03-15 17:21:10 +01:00
parent c30a768f35
commit 9b7988f26d
1 changed files with 28 additions and 0 deletions
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28
src/core/directives/collapsible-header.ts
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@ -76,6 +76,7 @@ export class CoreCollapsibleHeaderDirective implements OnInit, OnChanges, OnDest
protected enabled = true;
protected isWithinContent = false;
protected enteredPromise = new CorePromisedValue<void>();
protected mutationObserver?: MutationObserver;
constructor(el: ElementRef) {
this.collapsedHeader = el.nativeElement;
@ -126,6 +127,7 @@ export class CoreCollapsibleHeaderDirective implements OnInit, OnChanges, OnDest
}
this.resizeListener?.off();
this.mutationObserver?.disconnect();
}
/**
@ -161,6 +163,31 @@ export class CoreCollapsibleHeaderDirective implements OnInit, OnChanges, OnDest
this.subscriptions.push(CoreSettingsHelper.onDarkModeChange().subscribe(() => {
this.initializeFloatingTitle();
}));
this.mutationObserver = new MutationObserver(() => {
if (!this.expandedHeader) {
return;
}
const originalTitle = this.expandedHeader.querySelector('h1.collapsible-header-original-title') ||
this.expandedHeader.querySelector('h1') as HTMLHeadingElement;
const floatingTitleWrapper = originalTitle.parentElement as HTMLElement;
const floatingTitle = floatingTitleWrapper.querySelector('.collapsible-header-floating-title') as HTMLHeadingElement;
if (!floatingTitle || !originalTitle) {
return;
}
// Original title changed, change the contents.
const newFloatingTitle = originalTitle.cloneNode(true) as HTMLHeadingElement;
newFloatingTitle.classList.add('collapsible-header-floating-title');
newFloatingTitle.classList.remove('collapsible-header-original-title');
floatingTitleWrapper.replaceChild(newFloatingTitle, floatingTitle);
this.initializeFloatingTitle();
});
}
/**
@ -247,6 +274,7 @@ export class CoreCollapsibleHeaderDirective implements OnInit, OnChanges, OnDest
floatingTitleWrapper.insertBefore(floatingTitle, originalTitle);
originalTitle.classList.add('collapsible-header-original-title');
this.mutationObserver?.observe(originalTitle, { childList: true, subtree: true });
}
const floatingTitleBoundingBox = floatingTitle.getBoundingClientRect();