element-plus
Version:
A Component Library for Vue 3
353 lines (350 loc) • 12.3 kB
JavaScript
import { defineComponent, useSlots, ref, computed, provide, reactive, watch, onBeforeUpdate, onMounted, openBlock, createElementBlock, normalizeClass, unref, Fragment, renderList, createBlock, withCtx, renderSlot, nextTick } from 'vue';
import { isEqual, flattenDeep, cloneDeep } from 'lodash-unified';
import ElCascaderMenu from './menu.mjs';
import Store from './store.mjs';
import Node from './node.mjs';
import { cascaderPanelProps, cascaderPanelEmits, useCascaderConfig } from './config.mjs';
import { sortByOriginalOrder, checkNode, getMenuIndex } from './utils.mjs';
import { CASCADER_PANEL_INJECTION_KEY } from './types.mjs';
import _export_sfc from '../../../_virtual/plugin-vue_export-helper.mjs';
import { unique, castArray } from '../../../utils/arrays.mjs';
import { scrollIntoView } from '../../../utils/dom/scroll.mjs';
import { focusNode, getSibling } from '../../../utils/dom/aria.mjs';
import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
import { UPDATE_MODEL_EVENT, CHANGE_EVENT } from '../../../constants/event.mjs';
import { isEmpty } from '../../../utils/types.mjs';
import { isClient } from '@vueuse/core';
import { getEventCode } from '../../../utils/dom/event.mjs';
import { EVENT_CODE } from '../../../constants/aria.mjs';
const _sfc_main = defineComponent({
...{
name: "ElCascaderPanel"
},
__name: "index",
props: cascaderPanelProps,
emits: cascaderPanelEmits,
setup(__props, { expose: __expose, emit: __emit }) {
const props = __props;
const emit = __emit;
let manualChecked = false;
const ns = useNamespace("cascader");
const config = useCascaderConfig(props);
const slots = useSlots();
let store;
const initialLoaded = ref(true);
const initialLoadedOnce = ref(false);
const menuList = ref([]);
const checkedValue = ref();
const menus = ref([]);
const expandingNode = ref();
const checkedNodes = ref([]);
const isHoverMenu = computed(() => config.value.expandTrigger === "hover");
const renderLabelFn = computed(() => props.renderLabel || slots.default);
const initStore = () => {
const { options } = props;
const cfg = config.value;
manualChecked = false;
store = new Store(options, cfg);
menus.value = [store.getNodes()];
if (cfg.lazy && isEmpty(props.options)) {
initialLoaded.value = false;
lazyLoad(void 0, (list) => {
if (list) {
store = new Store(list, cfg);
menus.value = [store.getNodes()];
}
initialLoaded.value = true;
syncCheckedValue(false, true);
});
} else {
syncCheckedValue(false, true);
}
};
const lazyLoad = (node, cb) => {
const cfg = config.value;
node = node || new Node({}, cfg, void 0, true);
node.loading = true;
const resolve = (dataList) => {
const _node = node;
const parent = _node.root ? null : _node;
_node.loading = false;
_node.loaded = true;
_node.childrenData = _node.childrenData || [];
dataList && (store == null ? void 0 : store.appendNodes(dataList, parent));
dataList && (cb == null ? void 0 : cb(dataList));
if (node.level === 0) {
initialLoadedOnce.value = true;
}
};
const reject = () => {
node.loading = false;
node.loaded = false;
if (node.level === 0) {
initialLoaded.value = true;
}
};
cfg.lazyLoad(node, resolve, reject);
};
const expandNode = (node, silent) => {
var _a;
const { level } = node;
const newMenus = menus.value.slice(0, level);
let newExpandingNode;
if (node.isLeaf) {
newExpandingNode = node.pathNodes[level - 2];
} else {
newExpandingNode = node;
newMenus.push(node.children);
}
if (((_a = expandingNode.value) == null ? void 0 : _a.uid) !== (newExpandingNode == null ? void 0 : newExpandingNode.uid)) {
expandingNode.value = node;
menus.value = newMenus;
!silent && emit("expand-change", (node == null ? void 0 : node.pathValues) || []);
}
};
const handleCheckChange = (node, checked, emitClose = true) => {
const { checkStrictly, multiple } = config.value;
const oldNode = checkedNodes.value[0];
manualChecked = true;
!multiple && (oldNode == null ? void 0 : oldNode.doCheck(false));
node.doCheck(checked);
calculateCheckedValue();
emitClose && !multiple && !checkStrictly && emit("close");
!emitClose && !multiple && expandParentNode(node);
};
const expandParentNode = (node) => {
if (!node)
return;
node = node.parent;
expandParentNode(node);
node && expandNode(node);
};
const getFlattedNodes = (leafOnly) => store == null ? void 0 : store.getFlattedNodes(leafOnly);
const getCheckedNodes = (leafOnly) => {
var _a;
return (_a = getFlattedNodes(leafOnly)) == null ? void 0 : _a.filter(({ checked }) => checked !== false);
};
const clearCheckedNodes = () => {
checkedNodes.value.forEach((node) => node.doCheck(false));
calculateCheckedValue();
menus.value = menus.value.slice(0, 1);
expandingNode.value = void 0;
emit("expand-change", []);
};
const calculateCheckedValue = () => {
var _a;
const { checkStrictly, multiple } = config.value;
const oldNodes = checkedNodes.value;
const newNodes = getCheckedNodes(!checkStrictly);
const nodes = sortByOriginalOrder(oldNodes, newNodes);
const values = nodes.map((node) => node.valueByOption);
checkedNodes.value = nodes;
checkedValue.value = multiple ? values : (_a = values[0]) != null ? _a : null;
};
const syncCheckedValue = (loaded = false, forced = false) => {
const { modelValue } = props;
const { lazy, multiple, checkStrictly } = config.value;
const leafOnly = !checkStrictly;
if (!initialLoaded.value || manualChecked || !forced && isEqual(modelValue, checkedValue.value))
return;
if (lazy && !loaded) {
const values = unique(
flattenDeep(castArray(modelValue))
);
const nodes = values.map((val) => store == null ? void 0 : store.getNodeByValue(val)).filter((node) => !!node && !node.loaded && !node.loading);
if (nodes.length) {
nodes.forEach((node) => {
lazyLoad(node, () => syncCheckedValue(false, forced));
});
} else {
syncCheckedValue(true, forced);
}
} else {
const values = multiple ? castArray(modelValue) : [modelValue];
const nodes = unique(
values.map(
(val) => store == null ? void 0 : store.getNodeByValue(val, leafOnly)
)
);
syncMenuState(nodes, forced);
checkedValue.value = cloneDeep(modelValue != null ? modelValue : void 0);
}
};
const syncMenuState = (newCheckedNodes, reserveExpandingState = true) => {
const { checkStrictly } = config.value;
const oldNodes = checkedNodes.value;
const newNodes = newCheckedNodes.filter(
(node) => !!node && (checkStrictly || node.isLeaf)
);
const oldExpandingNode = store == null ? void 0 : store.getSameNode(expandingNode.value);
const newExpandingNode = reserveExpandingState && oldExpandingNode || newNodes[0];
if (newExpandingNode) {
newExpandingNode.pathNodes.forEach((node) => expandNode(node, true));
} else {
expandingNode.value = void 0;
}
oldNodes.forEach((node) => node.doCheck(false));
reactive(newNodes).forEach((node) => node.doCheck(true));
checkedNodes.value = newNodes;
nextTick(scrollToExpandingNode);
};
const scrollToExpandingNode = () => {
if (!isClient)
return;
menuList.value.forEach((menu) => {
const menuElement = menu == null ? void 0 : menu.$el;
if (menuElement) {
const container = menuElement.querySelector(
`.${ns.namespace.value}-scrollbar__wrap`
);
const activeNode = menuElement.querySelector(
`.${ns.b("node")}.${ns.is("active")}:last-child`
) || menuElement.querySelector(`.${ns.b("node")}.in-active-path`);
scrollIntoView(container, activeNode);
}
});
};
const handleKeyDown = (e) => {
const target = e.target;
const code = getEventCode(e);
switch (code) {
case EVENT_CODE.up:
case EVENT_CODE.down: {
e.preventDefault();
const distance = code === EVENT_CODE.up ? -1 : 1;
focusNode(
getSibling(
target,
distance,
`.${ns.b("node")}[tabindex="-1"]`
)
);
break;
}
case EVENT_CODE.left: {
e.preventDefault();
const preMenu = menuList.value[getMenuIndex(target) - 1];
const expandedNode = preMenu == null ? void 0 : preMenu.$el.querySelector(
`.${ns.b("node")}[aria-expanded="true"]`
);
focusNode(expandedNode);
break;
}
case EVENT_CODE.right: {
e.preventDefault();
const nextMenu = menuList.value[getMenuIndex(target) + 1];
const firstNode = nextMenu == null ? void 0 : nextMenu.$el.querySelector(
`.${ns.b("node")}[tabindex="-1"]`
);
focusNode(firstNode);
break;
}
case EVENT_CODE.enter:
case EVENT_CODE.numpadEnter:
checkNode(target);
break;
}
};
provide(
CASCADER_PANEL_INJECTION_KEY,
reactive({
config,
expandingNode,
checkedNodes,
isHoverMenu,
initialLoaded,
renderLabelFn,
lazyLoad,
expandNode,
handleCheckChange
})
);
watch(
config,
(newVal, oldVal) => {
if (isEqual(newVal, oldVal))
return;
initStore();
},
{
immediate: true
}
);
watch(() => props.options, initStore, {
deep: true
});
watch(
() => props.modelValue,
() => {
manualChecked = false;
syncCheckedValue();
},
{
deep: true
}
);
watch(
() => checkedValue.value,
(val) => {
if (!isEqual(val, props.modelValue)) {
emit(UPDATE_MODEL_EVENT, val);
emit(CHANGE_EVENT, val);
}
}
);
const loadLazyRootNodes = () => {
if (initialLoadedOnce.value)
return;
initStore();
};
onBeforeUpdate(() => menuList.value = []);
onMounted(() => !isEmpty(props.modelValue) && syncCheckedValue());
__expose({
menuList,
menus,
checkedNodes,
handleKeyDown,
handleCheckChange,
getFlattedNodes,
getCheckedNodes,
clearCheckedNodes,
calculateCheckedValue,
scrollToExpandingNode,
loadLazyRootNodes
});
return (_ctx, _cache) => {
return openBlock(), createElementBlock(
"div",
{
class: normalizeClass([unref(ns).b("panel"), unref(ns).is("bordered", _ctx.border)]),
onKeydown: handleKeyDown
},
[
(openBlock(true), createElementBlock(
Fragment,
null,
renderList(menus.value, (menu, index) => {
return openBlock(), createBlock(ElCascaderMenu, {
key: index,
ref_for: true,
ref: (item) => menuList.value[index] = item,
index,
nodes: [...menu]
}, {
empty: withCtx(() => [
renderSlot(_ctx.$slots, "empty")
]),
_: 3
}, 8, ["index", "nodes"]);
}),
128
))
],
34
);
};
}
});
var CascaderPanel = /* @__PURE__ */ _export_sfc(_sfc_main, [["__file", "/home/runner/work/element-plus/element-plus/packages/components/cascader-panel/src/index.vue"]]);
export { CascaderPanel as default };
//# sourceMappingURL=index.mjs.map