ckgl/node_modules/vant/es/barrage/Barrage.mjs
2024-12-21 13:52:42 +08:00

134 lines
4.2 KiB
JavaScript

var __async = (__this, __arguments, generator) => {
return new Promise((resolve, reject) => {
var fulfilled = (value) => {
try {
step(generator.next(value));
} catch (e) {
reject(e);
}
};
var rejected = (value) => {
try {
step(generator.throw(value));
} catch (e) {
reject(e);
}
};
var step = (x) => x.done ? resolve(x.value) : Promise.resolve(x.value).then(fulfilled, rejected);
step((generator = generator.apply(__this, __arguments)).next());
});
};
import { defineComponent, onMounted, ref, nextTick, watch, createVNode as _createVNode } from "vue";
import { useExpose } from "../composables/use-expose.mjs";
import { createNamespace, makeArrayProp, makeNumberProp, makeNumericProp, truthProp } from "../utils/index.mjs";
const barrageProps = {
top: makeNumericProp(10),
rows: makeNumericProp(4),
duration: makeNumericProp(4e3),
autoPlay: truthProp,
delay: makeNumberProp(300),
modelValue: makeArrayProp()
};
const [name, bem] = createNamespace("barrage");
var stdin_default = defineComponent({
name,
props: barrageProps,
emits: ["update:modelValue"],
setup(props, {
emit,
slots
}) {
const barrageWrapper = ref();
const className = bem("item");
const total = ref(0);
const barrageItems = [];
const createBarrageItem = (text, delay = props.delay) => {
const item = document.createElement("span");
item.className = className;
item.innerText = String(text);
item.style.animationDuration = `${props.duration}ms`;
item.style.animationDelay = `${delay}ms`;
item.style.animationName = "van-barrage";
item.style.animationTimingFunction = "linear";
return item;
};
const isInitBarrage = ref(true);
const isPlay = ref(props.autoPlay);
const appendBarrageItem = ({
id,
text
}, i) => {
var _a;
const item = createBarrageItem(text, isInitBarrage.value ? i * props.delay : void 0);
if (!props.autoPlay && isPlay.value === false) {
item.style.animationPlayState = "paused";
}
(_a = barrageWrapper.value) == null ? void 0 : _a.append(item);
total.value++;
const top = (total.value - 1) % +props.rows * item.offsetHeight + +props.top;
item.style.top = `${top}px`;
item.dataset.id = String(id);
barrageItems.push(item);
item.addEventListener("animationend", () => {
emit("update:modelValue", [...props.modelValue].filter((v) => String(v.id) !== item.dataset.id));
});
};
const updateBarrages = (newValue, oldValue) => {
const map = new Map(oldValue.map((item) => [item.id, item]));
newValue.forEach((item, i) => {
if (map.has(item.id)) {
map.delete(item.id);
} else {
appendBarrageItem(item, i);
}
});
map.forEach((item) => {
const index = barrageItems.findIndex((span) => span.dataset.id === String(item.id));
if (index > -1) {
barrageItems[index].remove();
barrageItems.splice(index, 1);
}
});
isInitBarrage.value = false;
};
watch(() => props.modelValue.slice(), (newValue, oldValue) => updateBarrages(newValue != null ? newValue : [], oldValue != null ? oldValue : []), {
deep: true
});
const rootStyle = ref({});
onMounted(() => __async(this, null, function* () {
var _a;
rootStyle.value["--move-distance"] = `-${(_a = barrageWrapper.value) == null ? void 0 : _a.offsetWidth}px`;
yield nextTick();
updateBarrages(props.modelValue, []);
}));
const play = () => {
isPlay.value = true;
barrageItems.forEach((item) => {
item.style.animationPlayState = "running";
});
};
const pause = () => {
isPlay.value = false;
barrageItems.forEach((item) => {
item.style.animationPlayState = "paused";
});
};
useExpose({
play,
pause
});
return () => {
var _a;
return _createVNode("div", {
"class": bem(),
"ref": barrageWrapper,
"style": rootStyle.value
}, [(_a = slots.default) == null ? void 0 : _a.call(slots)]);
};
}
});
export {
barrageProps,
stdin_default as default
};