vxe-pc-ui
Version:
A vue based PC component library
1,200 lines • 58.2 kB
JavaScript
import { defineComponent, h, Teleport, ref, inject, computed, provide, onUnmounted, reactive, nextTick, watch, onMounted } from 'vue';
import XEUtils from 'xe-utils';
import { getConfig, getIcon, getI18n, globalEvents, GLOBAL_EVENT_KEYS, createEvent, useSize, renderEmptyElement } from '../../ui';
import { getEventTargetNode, getAbsolutePos } from '../../ui/src/dom';
import { getLastZIndex, nextZIndex, getFuncText } from '../../ui/src/utils';
import { getSlotVNs } from '../../ui/src/vn';
import VxeInputComponent from '../../input/src/input';
function isOptionVisible(option) {
return option.visible !== false;
}
function getOptUniqueId() {
return XEUtils.uniqueId('opt_');
}
export default defineComponent({
name: 'VxeSelect',
props: {
modelValue: [String, Number, Boolean, Array],
defaultConfig: Object,
clearable: Boolean,
placeholder: String,
readonly: {
type: Boolean,
default: null
},
loading: Boolean,
disabled: {
type: Boolean,
default: null
},
multiple: Boolean,
multiCharOverflow: {
type: [Number, String],
default: () => getConfig().select.multiCharOverflow
},
prefixIcon: String,
allowCreate: {
type: Boolean,
default: () => getConfig().select.allowCreate
},
placement: String,
options: Array,
optionProps: Object,
optionGroups: Array,
optionGroupProps: Object,
optionConfig: Object,
className: [String, Function],
popupClassName: [String, Function],
max: {
type: [String, Number],
default: null
},
size: {
type: String,
default: () => getConfig().select.size || getConfig().size
},
filterable: Boolean,
filterMethod: Function,
remote: Boolean,
// 已废弃，被 remote-config.queryMethod 替换
remoteMethod: Function,
remoteConfig: Object,
emptyText: String,
transfer: {
type: Boolean,
default: null
},
virtualYConfig: Object,
scrollY: Object,
// 已废弃，被 option-config.keyField 替换
optionId: {
type: String,
default: () => getConfig().select.optionId
},
// 已废弃，被 option-config.useKey 替换
optionKey: Boolean
},
emits: [
'update:modelValue',
'change',
'clear',
'blur',
'focus',
'click',
'scroll',
'visible-change'
],
setup(props, context) {
const { slots, emit } = context;
const $xeModal = inject('$xeModal', null);
const $xeDrawer = inject('$xeDrawer', null);
const $xeTable = inject('$xeTable', null);
const $xeForm = inject('$xeForm', null);
const formItemInfo = inject('xeFormItemInfo', null);
const xID = XEUtils.uniqueId();
const refElem = ref();
const refInput = ref();
const refInpSearch = ref();
const refVirtualWrapper = ref();
const refOptionPanel = ref();
const refVirtualBody = ref();
const { computeSize } = useSize(props);
const reactData = reactive({
initialized: false,
scrollYLoad: false,
bodyHeight: 0,
topSpaceHeight: 0,
optList: [],
afterVisibleList: [],
staticOptions: [],
reactFlag: 0,
currentOption: null,
searchValue: '',
searchLoading: false,
panelIndex: 0,
panelStyle: {},
panelPlacement: null,
triggerFocusPanel: false,
visiblePanel: false,
isAniVisible: false,
isActivated: false
});
const internalData = {
synchData: [],
fullData: [],
optAddMaps: {},
optGroupKeyMaps: {},
optFullValMaps: {},
remoteValMaps: {},
lastScrollLeft: 0,
lastScrollTop: 0,
scrollYStore: {
startIndex: 0,
endIndex: 0,
visibleSize: 0,
offsetSize: 0,
rowHeight: 0
},
lastScrollTime: 0,
hpTimeout: undefined
};
const refMaps = {
refElem
};
const $xeSelect = {
xID,
props,
context,
reactData,
internalData,
getRefMaps: () => refMaps
};
const computeFormReadonly = computed(() => {
const { readonly } = props;
if (readonly === null) {
if ($xeForm) {
return $xeForm.props.readonly;
}
return false;
}
return readonly;
});
const computeIsDisabled = computed(() => {
const { disabled } = props;
if (disabled === null) {
if ($xeForm) {
return $xeForm.props.disabled;
}
return false;
}
return disabled;
});
const computeBtnTransfer = computed(() => {
const { transfer } = props;
if (transfer === null) {
const globalTransfer = getConfig().select.transfer;
if (XEUtils.isBoolean(globalTransfer)) {
return globalTransfer;
}
if ($xeTable || $xeModal || $xeDrawer || $xeForm) {
return true;
}
}
return transfer;
});
const computeInpPlaceholder = computed(() => {
const { placeholder } = props;
if (placeholder) {
return getFuncText(placeholder);
}
const globalPlaceholder = getConfig().select.placeholder;
if (globalPlaceholder) {
return getFuncText(globalPlaceholder);
}
return getI18n('vxe.base.pleaseSelect');
});
const computeDefaultOpts = computed(() => {
return Object.assign({}, props.defaultConfig);
});
const computePropsOpts = computed(() => {
return Object.assign({}, props.optionProps);
});
const computeGroupPropsOpts = computed(() => {
return Object.assign({}, props.optionGroupProps);
});
const computeLabelField = computed(() => {
const propsOpts = computePropsOpts.value;
return propsOpts.label || 'label';
});
const computeValueField = computed(() => {
const propsOpts = computePropsOpts.value;
return propsOpts.value || 'value';
});
const computeGroupLabelField = computed(() => {
const groupPropsOpts = computeGroupPropsOpts.value;
return groupPropsOpts.label || 'label';
});
const computeGroupOptionsField = computed(() => {
const groupPropsOpts = computeGroupPropsOpts.value;
return groupPropsOpts.options || 'options';
});
const computeIsMaximize = computed(() => {
const { modelValue, multiple, max } = props;
if (multiple && max) {
return (XEUtils.isArray(modelValue) ? modelValue.length : (XEUtils.eqNull(modelValue) ? 0 : 1)) >= XEUtils.toNumber(max);
}
return false;
});
const computeSYOpts = computed(() => {
return Object.assign({}, getConfig().select.virtualYConfig || getConfig().select.scrollY, props.virtualYConfig || props.scrollY);
});
const computeRemoteOpts = computed(() => {
return Object.assign({}, getConfig().select.remoteConfig, props.remoteConfig);
});
const computeOptionOpts = computed(() => {
return Object.assign({}, getConfig().select.optionConfig, props.optionConfig);
});
const computeMultiMaxCharNum = computed(() => {
return XEUtils.toNumber(props.multiCharOverflow);
});
const computeSelectLabel = computed(() => {
const { modelValue, remote, multiple } = props;
const { reactFlag } = reactData;
const multiMaxCharNum = computeMultiMaxCharNum.value;
if (XEUtils.eqNull(modelValue)) {
return '';
}
const vals = XEUtils.isArray(modelValue) ? modelValue : [modelValue];
if (remote && reactFlag) {
return vals.map(val => getRemoteSelectLabel(val)).join(', ');
}
return vals.map((val) => {
const label = getSelectLabel(val);
if (multiple && multiMaxCharNum > 0 && label.length > multiMaxCharNum) {
return `${label.substring(0, multiMaxCharNum)}...`;
}
return label;
}).join(', ');
});
const callSlot = (slotFunc, params) => {
if (slotFunc) {
if (XEUtils.isString(slotFunc)) {
slotFunc = slots[slotFunc] || null;
}
if (XEUtils.isFunction(slotFunc)) {
return getSlotVNs(slotFunc(params));
}
}
return [];
};
const dispatchEvent = (type, params, evnt) => {
emit(type, createEvent(evnt, { $select: $xeSelect }, params));
};
const emitModel = (value) => {
emit('update:modelValue', value);
};
const getOptKey = () => {
const optionOpts = computeOptionOpts.value;
return optionOpts.keyField || props.optionId || '_X_OPTION_KEY';
};
const getOptId = (option) => {
const optid = option[getOptKey()];
return optid ? encodeURIComponent(optid) : '';
};
const getRemoteSelectLabel = (value) => {
const { remoteValMaps, optFullValMaps } = internalData;
const labelField = computeLabelField.value;
const remoteItem = remoteValMaps[value] || optFullValMaps[value];
const item = remoteItem ? remoteItem.item : null;
return XEUtils.toValueString(item ? item[labelField] : value);
};
const getSelectLabel = (value) => {
const { optFullValMaps } = internalData;
const labelField = computeLabelField.value;
const cacheItem = reactData.reactFlag ? optFullValMaps[value] : null;
return cacheItem ? cacheItem.item[labelField] : XEUtils.toValueString(value);
};
const cacheItemMap = (datas) => {
const groupOptionsField = computeGroupOptionsField.value;
const valueField = computeValueField.value;
const key = getOptKey();
const groupKeyMaps = {};
const fullKeyMaps = {};
const list = [];
const handleOptItem = (item) => {
list.push(item);
let optid = getOptId(item);
if (!optid) {
optid = getOptUniqueId();
item[key] = optid;
}
fullKeyMaps[item[valueField]] = {
key: optid,
item,
_index: -1
};
};
datas.forEach((group) => {
handleOptItem(group);
if (group[groupOptionsField]) {
groupKeyMaps[group[key]] = group;
group[groupOptionsField].forEach(handleOptItem);
}
});
internalData.fullData = list;
internalData.optGroupKeyMaps = groupKeyMaps;
internalData.optFullValMaps = fullKeyMaps;
reactData.reactFlag++;
handleOption();
};
/**
* 处理选项，当选项被动态显示/隐藏时可能会用到
*/
const handleOption = () => {
const { modelValue, filterable, filterMethod } = props;
const { searchValue } = reactData;
const { fullData, optFullValMaps } = internalData;
const labelField = computeLabelField.value;
const valueField = computeValueField.value;
const searchStr = `${searchValue || ''}`.toLowerCase();
let avList = [];
if (filterable && filterMethod) {
avList = fullData.filter(option => isOptionVisible(option) && filterMethod({ $select: $xeSelect, group: null, option, searchValue, value: modelValue }));
}
else if (filterable) {
avList = fullData.filter(option => isOptionVisible(option) && (!searchStr || `${option[labelField]}`.toLowerCase().indexOf(searchStr) > -1));
}
else {
avList = fullData.filter(isOptionVisible);
}
avList.forEach((item, index) => {
const cacheItem = optFullValMaps[item[valueField]];
if (cacheItem) {
cacheItem._index = index;
}
});
reactData.afterVisibleList = avList;
return nextTick();
};
const setCurrentOption = (option) => {
if (option) {
reactData.currentOption = option;
}
};
const updateZIndex = () => {
if (reactData.panelIndex < getLastZIndex()) {
reactData.panelIndex = nextZIndex();
}
};
const updatePlacement = () => {
return nextTick().then(() => {
const { placement } = props;
const { panelIndex } = reactData;
const el = refElem.value;
const panelElem = refOptionPanel.value;
const btnTransfer = computeBtnTransfer.value;
if (panelElem && el) {
const targetHeight = el.offsetHeight;
const targetWidth = el.offsetWidth;
const panelHeight = panelElem.offsetHeight;
const panelWidth = panelElem.offsetWidth;
const marginSize = 5;
const panelStyle = {
zIndex: panelIndex
};
const { boundingTop, boundingLeft, visibleHeight, visibleWidth } = getAbsolutePos(el);
let panelPlacement = 'bottom';
if (btnTransfer) {
let left = boundingLeft;
let top = boundingTop + targetHeight;
if (placement === 'top') {
panelPlacement = 'top';
top = boundingTop - panelHeight;
}
else if (!placement) {
// 如果下面不够放，则向上
if (top + panelHeight + marginSize > visibleHeight) {
panelPlacement = 'top';
top = boundingTop - panelHeight;
}
// 如果上面不够放，则向下（优先）
if (top < marginSize) {
panelPlacement = 'bottom';
top = boundingTop + targetHeight;
}
}
// 如果溢出右边
if (left + panelWidth + marginSize > visibleWidth) {
left -= left + panelWidth + marginSize - visibleWidth;
}
// 如果溢出左边
if (left < marginSize) {
left = marginSize;
}
Object.assign(panelStyle, {
left: `${left}px`,
top: `${top}px`,
minWidth: `${targetWidth}px`
});
}
else {
if (placement === 'top') {
panelPlacement = 'top';
panelStyle.bottom = `${targetHeight}px`;
}
else if (!placement) {
// 如果下面不够放，则向上
if (boundingTop + targetHeight + panelHeight > visibleHeight) {
// 如果上面不够放，则向下（优先）
if (boundingTop - targetHeight - panelHeight > marginSize) {
panelPlacement = 'top';
panelStyle.bottom = `${targetHeight}px`;
}
}
}
}
reactData.panelStyle = panelStyle;
reactData.panelPlacement = panelPlacement;
return nextTick();
}
});
};
const showOptionPanel = () => {
const { loading, filterable, remote } = props;
const { fullData, hpTimeout } = internalData;
const isDisabled = computeIsDisabled.value;
const remoteOpts = computeRemoteOpts.value;
if (!loading && !isDisabled) {
if (hpTimeout) {
clearTimeout(hpTimeout);
internalData.hpTimeout = undefined;
}
if (!reactData.initialized) {
reactData.initialized = true;
}
reactData.isActivated = true;
reactData.isAniVisible = true;
if (filterable) {
if (remote && remoteOpts.enabled && remoteOpts.autoLoad && !fullData.length) {
triggerSearchEvent();
}
else {
handleOption();
updateYData();
}
}
setTimeout(() => {
reactData.visiblePanel = true;
handleFocusSearch();
recalculate().then(() => refreshScroll());
}, 10);
setTimeout(() => {
recalculate().then(() => refreshScroll());
}, 100);
updateZIndex();
updatePlacement();
dispatchEvent('visible-change', { visible: true }, null);
}
};
const hideOptionPanel = () => {
reactData.searchValue = '';
reactData.searchLoading = false;
reactData.visiblePanel = false;
internalData.hpTimeout = setTimeout(() => {
reactData.isAniVisible = false;
}, 350);
dispatchEvent('visible-change', { visible: false }, null);
};
const changeEvent = (evnt, selectValue) => {
emitModel(selectValue);
if (selectValue !== props.modelValue) {
dispatchEvent('change', { value: selectValue }, evnt);
// 自动更新校验状态
if ($xeForm && formItemInfo) {
$xeForm.triggerItemEvent(evnt, formItemInfo.itemConfig.field, selectValue);
}
}
};
const clearValueEvent = (evnt, selectValue) => {
internalData.remoteValMaps = {};
changeEvent(evnt, selectValue);
dispatchEvent('clear', { value: selectValue }, evnt);
};
const clearEvent = (params) => {
const { $event } = params;
clearValueEvent($event, null);
hideOptionPanel();
};
const changeOptionEvent = (evnt, option) => {
const { modelValue, multiple } = props;
const { remoteValMaps } = internalData;
const valueField = computeValueField.value;
const selectValue = option[valueField];
const remoteItem = remoteValMaps[selectValue];
if (!reactData.visiblePanel) {
return;
}
if (remoteItem) {
remoteItem.item = option;
}
else {
remoteValMaps[selectValue] = {
key: getOptId(option),
item: option,
_index: -1
};
}
if (multiple) {
let multipleValue = [];
const selectVals = XEUtils.eqNull(modelValue) ? [] : (XEUtils.isArray(modelValue) ? modelValue : [modelValue]);
const index = XEUtils.findIndexOf(selectVals, val => val === selectValue);
if (index === -1) {
multipleValue = selectVals.concat([selectValue]);
}
else {
multipleValue = selectVals.filter((val) => val !== selectValue);
}
changeEvent(evnt, multipleValue);
}
else {
changeEvent(evnt, selectValue);
hideOptionPanel();
}
reactData.reactFlag++;
};
const handleGlobalMousewheelEvent = (evnt) => {
const { visiblePanel } = reactData;
const isDisabled = computeIsDisabled.value;
if (!isDisabled) {
if (visiblePanel) {
const panelElem = refOptionPanel.value;
if (getEventTargetNode(evnt, panelElem).flag) {
updatePlacement();
}
else {
hideOptionPanel();
}
}
}
};
const handleGlobalMousedownEvent = (evnt) => {
const { visiblePanel } = reactData;
const isDisabled = computeIsDisabled.value;
if (!isDisabled) {
const el = refElem.value;
const panelElem = refOptionPanel.value;
reactData.isActivated = getEventTargetNode(evnt, el).flag || getEventTargetNode(evnt, panelElem).flag;
if (visiblePanel && !reactData.isActivated) {
hideOptionPanel();
}
}
};
const validOffsetOption = (option) => {
const isDisabled = option.disabled;
const optid = getOptId(option);
if (!isDisabled && !hasOptGroupById(optid)) {
return true;
}
return false;
};
const findOffsetOption = (option, isDwArrow) => {
const { allowCreate } = props;
const { afterVisibleList, optList } = reactData;
const { optFullValMaps, optAddMaps } = internalData;
const valueField = computeValueField.value;
let fullList = afterVisibleList;
let offsetAddIndex = 0;
if (allowCreate && optList.length) {
const firstItem = optList[0];
const optid = getOptId(firstItem);
if (optAddMaps[optid]) {
offsetAddIndex = 1;
fullList = [optAddMaps[optid]].concat(fullList);
}
}
if (!option) {
if (isDwArrow) {
for (let i = 0; i < fullList.length; i++) {
const item = fullList[i];
if (validOffsetOption(item)) {
return item;
}
}
}
else {
for (let len = fullList.length - 1; len >= 0; len--) {
const item = fullList[len];
if (validOffsetOption(item)) {
return item;
}
}
}
}
let avIndex = 0;
const cacheItem = option ? optFullValMaps[option[valueField]] : null;
if (cacheItem) {
avIndex = cacheItem._index + offsetAddIndex;
}
if (avIndex > -1) {
if (isDwArrow) {
for (let i = avIndex + 1; i <= fullList.length - 1; i++) {
const item = fullList[i];
if (validOffsetOption(item)) {
return item;
}
}
}
else {
if (avIndex > 0) {
for (let len = avIndex - 1; len >= 0; len--) {
const item = fullList[len];
if (validOffsetOption(item)) {
return item;
}
}
}
}
}
return null;
};
const handleGlobalKeydownEvent = (evnt) => {
const { clearable } = props;
const { visiblePanel, currentOption } = reactData;
const isDisabled = computeIsDisabled.value;
if (!isDisabled) {
const isTab = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.TAB);
const isEnter = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ENTER);
const isEsc = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ESCAPE);
const isUpArrow = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ARROW_UP);
const isDwArrow = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ARROW_DOWN);
const isDel = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.DELETE);
const isSpacebar = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.SPACEBAR);
if (isTab) {
reactData.isActivated = false;
}
if (visiblePanel) {
if (isEsc || isTab) {
hideOptionPanel();
}
else if (isEnter) {
if (currentOption) {
evnt.preventDefault();
evnt.stopPropagation();
changeOptionEvent(evnt, currentOption);
}
}
else if (isUpArrow || isDwArrow) {
evnt.preventDefault();
let offsetOption = findOffsetOption(currentOption, isDwArrow);
// 如果不匹配，默认最接近一个
if (!offsetOption) {
offsetOption = findOffsetOption(null, isDwArrow);
}
if (offsetOption) {
setCurrentOption(offsetOption);
handleScrollToOption(offsetOption, isDwArrow);
}
}
else if (isSpacebar) {
evnt.preventDefault();
}
}
else if ((isUpArrow || isDwArrow || isEnter || isSpacebar) && reactData.isActivated) {
evnt.preventDefault();
showOptionPanel();
}
if (reactData.isActivated) {
if (isDel && clearable) {
clearValueEvent(evnt, null);
}
}
}
};
const handleGlobalBlurEvent = () => {
hideOptionPanel();
};
const handleFocusSearch = () => {
if (props.filterable) {
nextTick(() => {
const inpSearch = refInpSearch.value;
if (inpSearch) {
inpSearch.focus();
}
});
}
};
const focusEvent = (evnt) => {
const isDisabled = computeIsDisabled.value;
if (!isDisabled) {
if (!reactData.visiblePanel) {
reactData.triggerFocusPanel = true;
showOptionPanel();
setTimeout(() => {
reactData.triggerFocusPanel = false;
}, 500);
}
}
dispatchEvent('focus', {}, evnt);
};
const clickEvent = (evnt) => {
togglePanelEvent(evnt);
dispatchEvent('click', { triggerButton: false, visible: reactData.visiblePanel }, evnt);
};
const blurEvent = (evnt) => {
reactData.isActivated = false;
dispatchEvent('blur', {}, evnt);
};
const suffixClickEvent = (evnt) => {
togglePanelEvent(evnt);
dispatchEvent('click', { triggerButton: true, visible: reactData.visiblePanel }, evnt);
};
const modelSearchEvent = (value) => {
reactData.searchValue = value;
};
const focusSearchEvent = () => {
reactData.isActivated = true;
};
const handleSearchEvent = () => {
const { modelValue, remote, remoteMethod } = props;
const { searchValue } = reactData;
const remoteOpts = computeRemoteOpts.value;
const queryMethod = remoteOpts.queryMethod || remoteMethod;
if (remote && queryMethod && remoteOpts.enabled) {
reactData.searchLoading = true;
Promise.resolve(queryMethod({ $select: $xeSelect, searchValue, value: modelValue })).then(() => nextTick())
.catch(() => nextTick())
.finally(() => {
reactData.searchLoading = false;
handleOption();
updateYData();
});
}
else {
handleOption();
updateYData();
}
};
const triggerSearchEvent = XEUtils.debounce(handleSearchEvent, 350, { trailing: true });
const togglePanelEvent = (params) => {
const { $event } = params;
$event.preventDefault();
if (reactData.triggerFocusPanel) {
reactData.triggerFocusPanel = false;
}
else {
if (reactData.visiblePanel) {
hideOptionPanel();
}
else {
showOptionPanel();
}
}
};
const checkOptionDisabled = (isSelected, option, group) => {
if (option.disabled) {
return true;
}
if (group && group.disabled) {
return true;
}
const isMaximize = computeIsMaximize.value;
if (isMaximize && !isSelected) {
return true;
}
return false;
};
const updateYSpace = () => {
const { scrollYLoad, afterVisibleList } = reactData;
const { scrollYStore } = internalData;
reactData.bodyHeight = scrollYLoad ? afterVisibleList.length * scrollYStore.rowHeight : 0;
reactData.topSpaceHeight = scrollYLoad ? Math.max(scrollYStore.startIndex * scrollYStore.rowHeight, 0) : 0;
};
const handleData = () => {
const { filterable, allowCreate } = props;
const { scrollYLoad, afterVisibleList, searchValue } = reactData;
const { optAddMaps, scrollYStore } = internalData;
const labelField = computeLabelField.value;
const valueField = computeValueField.value;
const restList = scrollYLoad ? afterVisibleList.slice(scrollYStore.startIndex, scrollYStore.endIndex) : afterVisibleList.slice(0);
if (filterable && allowCreate && searchValue) {
if (!restList.some(option => option[labelField] === searchValue)) {
const addItem = optAddMaps[searchValue] || reactive({
[getOptKey()]: searchValue,
[labelField]: searchValue,
[valueField]: searchValue
});
optAddMaps[searchValue] = addItem;
restList.unshift(addItem);
}
}
reactData.optList = restList;
return nextTick();
};
const updateYData = () => {
handleData();
updateYSpace();
};
const computeScrollLoad = () => {
return nextTick().then(() => {
const { scrollYLoad } = reactData;
const { scrollYStore } = internalData;
const virtualBodyElem = refVirtualBody.value;
const sYOpts = computeSYOpts.value;
let rowHeight = 0;
let firstItemElem;
if (virtualBodyElem) {
if (sYOpts.sItem) {
firstItemElem = virtualBodyElem.querySelector(sYOpts.sItem);
}
if (!firstItemElem) {
firstItemElem = virtualBodyElem.children[0];
}
}
if (firstItemElem) {
rowHeight = firstItemElem.offsetHeight;
}
rowHeight = Math.max(20, rowHeight);
scrollYStore.rowHeight = rowHeight;
// 计算 Y 逻辑
if (scrollYLoad) {
const scrollBodyElem = refVirtualWrapper.value;
const visibleYSize = Math.max(8, scrollBodyElem ? Math.ceil(scrollBodyElem.clientHeight / rowHeight) : 0);
const offsetYSize = Math.max(0, Math.min(2, XEUtils.toNumber(sYOpts.oSize)));
scrollYStore.offsetSize = offsetYSize;
scrollYStore.visibleSize = visibleYSize;
scrollYStore.endIndex = Math.max(scrollYStore.startIndex, visibleYSize + offsetYSize, scrollYStore.endIndex);
updateYData();
}
else {
updateYSpace();
}
});
};
const handleScrollToOption = (option, isDwArrow) => {
const { scrollYLoad } = reactData;
const { optFullValMaps, scrollYStore } = internalData;
const valueField = computeValueField.value;
const cacheItem = optFullValMaps[option[valueField]];
if (cacheItem) {
const optid = cacheItem.key;
const avIndex = cacheItem._index;
if (avIndex > -1) {
const optWrapperElem = refVirtualWrapper.value;
const panelElem = refOptionPanel.value;
const optElem = panelElem.querySelector(`[optid='${optid}']`);
if (optWrapperElem) {
if (optElem) {
const wrapperHeight = optWrapperElem.offsetHeight;
const offsetPadding = 1;
if (isDwArrow) {
if (optElem.offsetTop + optElem.offsetHeight - optWrapperElem.scrollTop > wrapperHeight) {
optWrapperElem.scrollTop = optElem.offsetTop + optElem.offsetHeight - wrapperHeight;
}
else if (optElem.offsetTop + offsetPadding < optWrapperElem.scrollTop || optElem.offsetTop + offsetPadding > optWrapperElem.scrollTop + optWrapperElem.clientHeight) {
optWrapperElem.scrollTop = optElem.offsetTop - offsetPadding;
}
}
else {
if (optElem.offsetTop + offsetPadding < optWrapperElem.scrollTop || optElem.offsetTop + offsetPadding > optWrapperElem.scrollTop + optWrapperElem.clientHeight) {
optWrapperElem.scrollTop = optElem.offsetTop - offsetPadding;
}
else if (optElem.offsetTop + optElem.offsetHeight - optWrapperElem.scrollTop > wrapperHeight) {
optWrapperElem.scrollTop = optElem.offsetTop + optElem.offsetHeight - wrapperHeight;
}
}
}
else if (scrollYLoad) {
if (isDwArrow) {
optWrapperElem.scrollTop = avIndex * scrollYStore.rowHeight - optWrapperElem.clientHeight + scrollYStore.rowHeight;
}
else {
optWrapperElem.scrollTop = avIndex * scrollYStore.rowHeight;
}
}
}
}
}
};
/**
* 如果有滚动条，则滚动到对应的位置
* @param {Number} scrollLeft 左距离
* @param {Number} scrollTop 上距离
*/
const scrollTo = (scrollLeft, scrollTop) => {
const scrollBodyElem = refVirtualWrapper.value;
if (scrollBodyElem) {
if (XEUtils.isNumber(scrollLeft)) {
scrollBodyElem.scrollLeft = scrollLeft;
}
if (XEUtils.isNumber(scrollTop)) {
scrollBodyElem.scrollTop = scrollTop;
}
}
if (reactData.scrollYLoad) {
return new Promise(resolve => {
setTimeout(() => {
nextTick(() => {
resolve();
});
}, 50);
});
}
return nextTick();
};
/**
* 刷新滚动条
*/
const refreshScroll = () => {
const { lastScrollLeft, lastScrollTop } = internalData;
return clearScroll().then(() => {
if (lastScrollLeft || lastScrollTop) {
internalData.lastScrollLeft = 0;
internalData.lastScrollTop = 0;
return scrollTo(lastScrollLeft, lastScrollTop);
}
});
};
/**
* 重新计算列表
*/
const recalculate = () => {
const el = refElem.value;
if (el && el.clientWidth && el.clientHeight) {
return computeScrollLoad();
}
return Promise.resolve();
};
const loadYData = (evnt) => {
const { scrollYStore } = internalData;
const { startIndex, endIndex, visibleSize, offsetSize, rowHeight } = scrollYStore;
const scrollBodyElem = evnt.target;
const scrollTop = scrollBodyElem.scrollTop;
const toVisibleIndex = Math.floor(scrollTop / rowHeight);
const offsetStartIndex = Math.max(0, toVisibleIndex - 1 - offsetSize);
const offsetEndIndex = toVisibleIndex + visibleSize + offsetSize;
if (toVisibleIndex <= startIndex || toVisibleIndex >= endIndex - visibleSize - 1) {
if (startIndex !== offsetStartIndex || endIndex !== offsetEndIndex) {
scrollYStore.startIndex = offsetStartIndex;
scrollYStore.endIndex = offsetEndIndex;
updateYData();
}
}
};
// 滚动、拖动过程中不需要触发
const isVMScrollProcess = () => {
const delayHover = 250;
const { lastScrollTime } = internalData;
return !!(lastScrollTime && Date.now() < lastScrollTime + delayHover);
};
const scrollEvent = (evnt) => {
const scrollBodyElem = evnt.target;
const scrollTop = scrollBodyElem.scrollTop;
const scrollLeft = scrollBodyElem.scrollLeft;
const isX = scrollLeft !== internalData.lastScrollLeft;
const isY = scrollTop !== internalData.lastScrollTop;
internalData.lastScrollTop = scrollTop;
internalData.lastScrollLeft = scrollLeft;
if (reactData.scrollYLoad) {
loadYData(evnt);
}
internalData.lastScrollTime = Date.now();
dispatchEvent('scroll', { scrollLeft, scrollTop, isX, isY }, evnt);
};
/**
* 加载数据
* @param {Array} datas 数据
*/
const loadData = (datas) => {
cacheItemMap(datas || []);
const { isLoaded, fullData, scrollYStore } = internalData;
const defaultOpts = computeDefaultOpts.value;
const sYOpts = computeSYOpts.value;
const valueField = computeValueField.value;
Object.assign(scrollYStore, {
startIndex: 0,
endIndex: 1,
visibleSize: 0
});
internalData.synchData = datas || [];
// 如果gt为0，则总是启用
reactData.scrollYLoad = !!sYOpts.enabled && sYOpts.gt > -1 && (sYOpts.gt === 0 || sYOpts.gt <= fullData.length);
handleData();
if (!isLoaded) {
const { selectMode } = defaultOpts;
if (datas.length > 0 && XEUtils.eqNull(props.modelValue)) {
if (selectMode === 'first' || selectMode === 'last') {
const selectItem = XEUtils[selectMode](datas);
if (selectItem) {
nextTick(() => {
if (XEUtils.eqNull(props.modelValue)) {
emitModel(selectItem[valueField]);
}
});
}
}
internalData.isLoaded = true;
}
}
return computeScrollLoad().then(() => {
refreshScroll();
});
};
const clearScroll = () => {
const scrollBodyElem = refVirtualWrapper.value;
if (scrollBodyElem) {
scrollBodyElem.scrollTop = 0;
scrollBodyElem.scrollLeft = 0;
}
internalData.lastScrollTop = 0;
internalData.lastScrollLeft = 0;
return nextTick();
};
const hasOptGroupById = (optid) => {
const { optGroupKeyMaps } = internalData;
return !!optGroupKeyMaps[optid];
};
const selectMethods = {
dispatchEvent,
loadData,
reloadData(datas) {
internalData.isLoaded = false;
clearScroll();
return loadData(datas);
},
isPanelVisible() {
return reactData.visiblePanel;
},
togglePanel() {
if (reactData.visiblePanel) {
hideOptionPanel();
}
else {
showOptionPanel();
}
return nextTick();
},
hidePanel() {
if (reactData.visiblePanel) {
hideOptionPanel();
}
return nextTick();
},
showPanel() {
if (!reactData.visiblePanel) {
showOptionPanel();
}
return nextTick();
},
refreshOption() {
handleOption();
updateYData();
return nextTick();
},
focus() {
const $input = refInput.value;
reactData.isActivated = true;
$input.blur();
return nextTick();
},
blur() {
const $input = refInput.value;
$input.blur();
reactData.isActivated = false;
return nextTick();
},
recalculate,
clearScroll
};
Object.assign($xeSelect, selectMethods);
const renderOption = (list, group) => {
const { allowCreate, optionKey, modelValue } = props;
const { currentOption } = reactData;
const { optAddMaps } = internalData;
const optionOpts = computeOptionOpts.value;
const labelField = computeLabelField.value;
const valueField = computeValueField.value;
const groupLabelField = computeGroupLabelField.value;
const { useKey } = optionOpts;
const optionSlot = slots.option;
return list.map((option, cIndex) => {
const { slots, className } = option;
const optid = getOptId(option);
const optionValue = option[valueField];
const isOptGroup = hasOptGroupById(optid);
const isAdd = !!(allowCreate && optAddMaps[optid]);
const isSelected = !isAdd && (XEUtils.isArray(modelValue) ? modelValue.indexOf(optionValue) > -1 : modelValue === optionValue);
const isVisible = isAdd || (!isOptGroup || isOptionVisible(option));
const isDisabled = !isAdd && checkOptionDisabled(isSelected, option, group);
const defaultSlot = slots ? slots.default : null;
const optParams = { option, group: null, $select: $xeSelect };
const optVNs = optionSlot ? callSlot(optionSlot, optParams) : (defaultSlot ? callSlot(defaultSlot, optParams) : getFuncText(option[(isOptGroup ? groupLabelField : labelField)]));
return isVisible
? h('div', {
key: useKey || optionKey ? optid : cIndex,
class: ['vxe-select-option', className ? (XEUtils.isFunction(className) ? className(optParams) : className) : '', {
'vxe-select-optgroup': isOptGroup,
'is--disabled': isDisabled,
'is--selected': isSelected,
'is--add': isAdd,
'is--hover': currentOption && getOptId(currentOption) === optid
}],
// attrs
optid: optid,
// event
onMousedown: (evnt) => {
const isLeftBtn = evnt.button === 0;
if (isLeftBtn) {
evnt.stopPropagation();
}
},
onClick: (evnt) => {
if (!isDisabled && !isOptGroup) {
changeOptionEvent(evnt, option);
}
},
onMouseenter: () => {
if (!isDisabled && !isOptGroup && !isVMScrollProcess()) {
setCurrentOption(option);
}
}
}, allowCreate
? [
h('span', {
key: 1,
class: 'vxe-select-option--label'
}, optVNs),
isAdd
? h('span', {
key: 2,
class: 'vxe-select-option--add-icon'
}, [
h('i', {
class: getIcon().ADD_OPTION
})
])
: renderEmptyElement($xeSelect)
]
: optVNs)
: renderEmptyElement($xeSelect);
});
};
const renderOpts = () => {
const { optList, searchLoading } = reactData;
if (searchLoading) {
return [
h('div', {
class: 'vxe-select--search-loading'
}, [
h('i', {
class: ['vxe-select--search-icon', getIcon().SELECT_LOADED]
}),
h('span', {
class: 'vxe-select--search-text'
}, getI18n('vxe.select.loadingText'))
])
];
}
if (optList.length) {
return renderOption(optList);
}
return [
h('div', {
class: 'vxe-select--empty-placeholder'
}, props.emptyText || getI18n('vxe.select.emptyText'))
];
};
const renderVN = () => {
const { className, popupClassName, loading, filterable } = props;
const { initialized, isActivated, isAniVisible, visiblePanel, bodyHeight, topSpaceHeight } = reactData;
const vSize = computeSize.value;
const isDisabled = computeIsDisabled.value;
const selectLabel = computeSelectLabel.value;
const btnTransfer = computeBtnTransfer.value;
const formReadonly = computeFormReadonly.value;
const inpPlaceholder = computeInpPlaceholder.value;
const defaultSlot = slots.default;
const headerSlot = slots.header;
const footerSlot = slots.footer;
const prefixSlot = slots.prefix;
if (formReadonly) {
return h('div', {