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parent
5d4d8cd828
commit
9b1070651c
@ -33,13 +33,27 @@ class MathjaxExplanation extends MathjaxAdapter {
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}
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protected showStep(n: number): void {
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let el = this.getElementForStep(this.lastStepShown);
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if (el) {
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el.style.opacity = "0.5";
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let lastEl = this.getElementForStep(this.lastStepShown);
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if (lastEl) {
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lastEl.style.opacity = "0.5";
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}
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el = this.getElementForStep(n);
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let el = this.getElementForStep(n);
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if (el) {
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this.lastStepShown = n;
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// scroll to element if needed
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/* TODO: this works, but Vaadin still resets the scroll position when updating the unification text...
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const hostEl = this.shadowRoot!.host as HTMLElement;
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const dy = el.offsetTop - hostEl.offsetTop - hostEl.scrollTop;
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if (dy > hostEl.offsetHeight || dy < 0) {
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console.log("doing it!");
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console.log(dy);
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console.log(hostEl.scrollTop);
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console.log(hostEl.offsetTop);
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console.log(el.offsetTop);
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console.log("scrolling by " + (-hostEl.scrollTop + el.offsetTop - hostEl.offsetTop));
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hostEl.scrollBy(0, -hostEl.scrollTop + el.offsetTop - hostEl.offsetTop);
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}
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*/
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el.style.opacity = "1.0";
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}
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}
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