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ant-design-vue/components/vc-trigger/Popup/useVisibleStatus.ts

98 lines
2.4 KiB

import type { Ref } from 'vue';
import { nextTick, onBeforeUnmount, ref, watch, onMounted } from 'vue';
import raf from '../../_util/raf';
/**
* Popup should follow the steps for each component work correctly:
* measure - check for the value stretch size
* align - let component align the position
* aligned - re-align again in case additional className changed the size
* afterAlign - choice next step is trigger motion or finished
* beforeMotion - should reset motion to invisible so that CSSMotion can do normal motion
* motion - play the motion
* stable - everything is done
*/
type PopupStatus = null | 'measure' | 'align' | 'aligned' | 'motion' | 'stable';
type Func = () => void;
const StatusQueue: PopupStatus[] = ['measure', 'align', null, 'motion'];
export default (
visible: Ref<boolean>,
doMeasure: Func,
): [Ref<PopupStatus>, (callback?: () => void) => void] => {
const status = ref<PopupStatus>(null);
const rafRef = ref<number>();
const destroyRef = ref(false);
function setStatus(nextStatus: PopupStatus) {
if (!destroyRef.value) {
status.value = nextStatus;
}
}
function cancelRaf() {
raf.cancel(rafRef.value);
}
function goNextStatus(callback?: () => void) {
cancelRaf();
rafRef.value = raf(() => {
// Only align should be manually trigger
let newStatus = status.value;
switch (status.value) {
case 'align':
newStatus = 'motion';
break;
case 'motion':
newStatus = 'stable';
break;
default:
}
setStatus(newStatus);
callback?.();
});
}
watch(
visible,
() => {
setStatus('measure');
},
{ immediate: true, flush: 'post' },
);
onMounted(() => {
// Go next status
watch(
status,
() => {
switch (status.value) {
case 'measure':
doMeasure();
break;
default:
}
if (status.value) {
nextTick(() => {
const index = StatusQueue.indexOf(status.value);
const nextStatus = StatusQueue[index + 1];
if (nextStatus && index !== -1) {
setStatus(nextStatus);
}
});
}
},
{ immediate: true, flush: 'post' },
);
});
onBeforeUnmount(() => {
destroyRef.value = true;
cancelRaf();
});
return [status, goNextStatus];
};