86 lines
2.5 KiB
TypeScript
86 lines
2.5 KiB
TypeScript
import { Ref, ref, watch, onUnmounted } from 'vue';
|
||
|
||
export function useTooltip(
|
||
elRef: Ref<HTMLElement | { $el: HTMLElement } | null | undefined>,
|
||
onShow: (showing: Ref<boolean>) => void,
|
||
): void {
|
||
let isHovering = false;
|
||
|
||
// iOS(Androidも？)では、要素をタップした直後に(おせっかいで)mouseoverイベントを発火させたりするため、それを無視するためのフラグ
|
||
// 無視しないと、画面に触れてないのにツールチップが出たりし、ユーザビリティが損なわれる
|
||
// TODO: 一度でもタップすると二度とマウスでツールチップ出せなくなるのをどうにかする 定期的にfalseに戻すとか...？
|
||
let shouldIgnoreMouseover = false;
|
||
|
||
let timeoutId: number;
|
||
|
||
let changeShowingState: (() => void) | null;
|
||
|
||
const open = () => {
|
||
close();
|
||
if (!isHovering) return;
|
||
if (elRef.value == null) return;
|
||
const el = elRef.value instanceof Element ? elRef.value : elRef.value.$el;
|
||
if (!document.body.contains(el)) return; // openしようとしたときに既に元要素がDOMから消えている場合があるため
|
||
|
||
const showing = ref(true);
|
||
onShow(showing);
|
||
changeShowingState = () => {
|
||
showing.value = false;
|
||
};
|
||
};
|
||
|
||
const close = () => {
|
||
if (changeShowingState != null) {
|
||
changeShowingState();
|
||
changeShowingState = null;
|
||
}
|
||
};
|
||
|
||
const onMouseover = () => {
|
||
if (isHovering) return;
|
||
if (shouldIgnoreMouseover) return;
|
||
isHovering = true;
|
||
timeoutId = window.setTimeout(open, 300);
|
||
};
|
||
|
||
const onMouseleave = () => {
|
||
if (!isHovering) return;
|
||
isHovering = false;
|
||
window.clearTimeout(timeoutId);
|
||
close();
|
||
};
|
||
|
||
const onTouchstart = () => {
|
||
shouldIgnoreMouseover = true;
|
||
if (isHovering) return;
|
||
isHovering = true;
|
||
timeoutId = window.setTimeout(open, 300);
|
||
};
|
||
|
||
const onTouchend = () => {
|
||
if (!isHovering) return;
|
||
isHovering = false;
|
||
window.clearTimeout(timeoutId);
|
||
close();
|
||
};
|
||
|
||
const stop = watch(elRef, () => {
|
||
if (elRef.value) {
|
||
stop();
|
||
const el = elRef.value instanceof Element ? elRef.value : elRef.value.$el;
|
||
el.addEventListener('mouseover', onMouseover, { passive: true });
|
||
el.addEventListener('mouseleave', onMouseleave, { passive: true });
|
||
el.addEventListener('touchstart', onTouchstart, { passive: true });
|
||
el.addEventListener('touchend', onTouchend, { passive: true });
|
||
el.addEventListener('click', close, { passive: true });
|
||
}
|
||
}, {
|
||
immediate: true,
|
||
flush: 'post',
|
||
});
|
||
|
||
onUnmounted(() => {
|
||
close();
|
||
});
|
||
}
|