primevue-mirror/src/components/multiselect/MultiSelect.vue

729 lines
26 KiB
Vue
Executable File

<template>
<div ref="container" :class="containerClass" @click="onClick">
<div class="p-hidden-accessible">
<input ref="focusInput" type="text" role="listbox" :id="inputId" readonly :disabled="disabled" @focus="onFocus" @blur="onBlur" @keydown="onKeyDown" :tabindex="tabindex"
aria-haspopup="listbox" :aria-expanded="overlayVisible" :aria-labelledby="ariaLabelledBy"/>
</div>
<div class="p-multiselect-label-container">
<div :class="labelClass">
<slot name="value" :value="modelValue" :placeholder="placeholder">
<template v-if="display === 'comma'">
{{label || 'empty'}}
</template>
<template v-else-if="display === 'chip'">
<div v-for="item of modelValue" class="p-multiselect-token" :key="getLabelByValue(item)">
<span class="p-multiselect-token-label">{{getLabelByValue(item)}}</span>
<span v-if="!disabled" class="p-multiselect-token-icon pi pi-times-circle" @click="removeChip(item)"></span>
</div>
<template v-if="!modelValue || modelValue.length === 0">{{placeholder || 'empty'}}</template>
</template>
</slot>
</div>
</div>
<div class="p-multiselect-trigger">
<span class="p-multiselect-trigger-icon pi pi-chevron-down"></span>
</div>
<transition name="p-connected-overlay" @enter="onOverlayEnter" @leave="onOverlayLeave">
<div :ref="overlayRef" class="p-multiselect-panel p-component" v-if="overlayVisible">
<slot name="header" :value="modelValue" :options="visibleOptions"></slot>
<div class="p-multiselect-header">
<div class="p-checkbox p-component" @click="onToggleAll" role="checkbox" :aria-checked="allSelected">
<div class="p-hidden-accessible">
<input type="checkbox" readonly @focus="onHeaderCheckboxFocus" @blur="onHeaderCheckboxBlur">
</div>
<div :class="['p-checkbox-box', {'p-highlight': allSelected, 'p-focus': headerCheckboxFocused}]" role="checkbox" :aria-checked="allSelected">
<span :class="['p-checkbox-icon', {'pi pi-check': allSelected}]"></span>
</div>
</div>
<div v-if="filter" class="p-multiselect-filter-container">
<input type="text" v-model="filterValue" class="p-multiselect-filter p-inputtext p-component" :placeholder="filterPlaceholder" @input="onFilterChange">
<span class="p-multiselect-filter-icon pi pi-search"></span>
</div>
<button class="p-multiselect-close p-link" @click="onCloseClick" type="button" v-ripple>
<span class="p-multiselect-close-icon pi pi-times" />
</button>
</div>
<div class="p-multiselect-items-wrapper" :style="{'max-height': scrollHeight}">
<ul class="p-multiselect-items p-component" role="listbox" aria-multiselectable="true">
<template v-if="!optionGroupLabel">
<li v-for="(option, i) of visibleOptions" :class="['p-multiselect-item', {'p-highlight': isSelected(option), 'p-disabled': isOptionDisabled(option)}]" role="option" :aria-selected="isSelected(option)"
:key="getOptionRenderKey(option)" @click="onOptionSelect($event, option)" @keydown="onOptionKeyDown($event, option)" :tabindex="tabindex||'0'" :aria-label="getOptionLabel(option)" v-ripple>
<div class="p-checkbox p-component">
<div :class="['p-checkbox-box', {'p-highlight': isSelected(option)}]">
<span :class="['p-checkbox-icon', {'pi pi-check': isSelected(option)}]"></span>
</div>
</div>
<slot name="option" :option="option" :index="i">
<span>{{getOptionLabel(option)}}</span>
</slot>
</li>
</template>
<template v-else>
<template v-for="(optionGroup, i) of visibleOptions" :key="getOptionGroupRenderKey(optionGroup)">
<li class="p-multiselect-item-group">
<slot name="optiongroup" :option="optionGroup" :index="i">{{getOptionGroupLabel(optionGroup)}}</slot>
</li>
<li v-for="(option, i) of getOptionGroupChildren(optionGroup)" :class="['p-multiselect-item', {'p-highlight': isSelected(option), 'p-disabled': isOptionDisabled(option)}]" role="option" :aria-selected="isSelected(option)"
:key="getOptionRenderKey(option)" @click="onOptionSelect($event, option)" @keydown="onOptionKeyDown($event, option)" :tabindex="tabindex||'0'" :aria-label="getOptionLabel(option)" v-ripple>
<div class="p-checkbox p-component">
<div :class="['p-checkbox-box', {'p-highlight': isSelected(option)}]">
<span :class="['p-checkbox-icon', {'pi pi-check': isSelected(option)}]"></span>
</div>
</div>
<slot name="option" :option="option" :index="i">
<span>{{getOptionLabel(option)}}</span>
</slot>
</li>
</template>
</template>
<li v-if="filterValue && (!visibleOptions || (visibleOptions && visibleOptions.length === 0))" class="p-multiselect-empty-message">
<slot name="emptyfilter">{{emptyFilterMessageText}}</slot>
</li>
<li v-else-if="(!options || (options && options.length === 0))" class="p-multiselect-empty-message">
<slot name="empty">{{emptyMessageText}}</slot>
</li>
</ul>
</div>
<slot name="footer" :value="modelValue" :options="visibleOptions"></slot>
</div>
</transition>
</div>
</template>
<script>
import {ConnectedOverlayScrollHandler} from 'primevue/utils';
import {ObjectUtils} from 'primevue/utils';
import {DomHandler} from 'primevue/utils';
import {FilterService} from 'primevue/api';
import Ripple from 'primevue/ripple';
export default {
emits: ['update:modelValue', 'before-show', 'before-hide', 'change', 'show', 'hide', 'filter'],
props: {
modelValue: null,
options: Array,
optionLabel: null,
optionValue: null,
optionDisabled: null,
optionGroupLabel: null,
optionGroupChildren: null,
scrollHeight: {
type: String,
default: '200px'
},
placeholder: String,
disabled: Boolean,
tabindex: String,
inputId: String,
dataKey: null,
filter: Boolean,
filterPlaceholder: String,
filterLocale: String,
filterMatchMode: {
type: String,
default: 'contains'
},
filterFields: {
type: Array,
default: null
},
ariaLabelledBy: null,
appendTo: {
type: String,
default: null
},
emptyFilterMessage: {
type: String,
default: null
},
emptyMessage: {
type: String,
default: null
},
display: {
type: String,
default: 'comma'
}
},
data() {
return {
focused: false,
headerCheckboxFocused: false,
filterValue: null,
overlayVisible: false
};
},
outsideClickListener: null,
resizeListener: null,
scrollHandler: null,
overlay: null,
beforeUnmount() {
this.restoreAppend();
this.unbindOutsideClickListener();
this.unbindResizeListener();
if (this.scrollHandler) {
this.scrollHandler.destroy();
this.scrollHandler = null;
}
this.overlay = null;
},
methods: {
getOptionLabel(option) {
return this.optionLabel ? ObjectUtils.resolveFieldData(option, this.optionLabel) : option;
},
getOptionValue(option) {
return this.optionValue ? ObjectUtils.resolveFieldData(option, this.optionValue) : option;
},
getOptionRenderKey(option) {
return this.dataKey ? ObjectUtils.resolveFieldData(option, this.dataKey) : this.getOptionLabel(option);
},
getOptionGroupRenderKey(optionGroup) {
return ObjectUtils.resolveFieldData(optionGroup, this.optionGroupLabel);
},
getOptionGroupLabel(optionGroup) {
return ObjectUtils.resolveFieldData(optionGroup, this.optionGroupLabel);
},
getOptionGroupChildren(optionGroup) {
return ObjectUtils.resolveFieldData(optionGroup, this.optionGroupChildren);
},
isOptionDisabled(option) {
return this.optionDisabled ? ObjectUtils.resolveFieldData(option, this.optionDisabled) : false;
},
isSelected(option) {
let selected = false;
let optionValue = this.getOptionValue(option);
if (this.modelValue) {
for (let val of this.modelValue) {
if (ObjectUtils.equals(val, optionValue, this.equalityKey)) {
selected = true;
break;
}
}
}
return selected;
},
show() {
this.$emit('before-show');
this.overlayVisible = true;
},
hide() {
this.$emit('before-hide');
this.overlayVisible = false;
},
onFocus() {
this.focused = true;
},
onBlur() {
this.focused = false;
},
onHeaderCheckboxFocus() {
this.headerCheckboxFocused = true;
},
onHeaderCheckboxBlur() {
this.headerCheckboxFocused = false;
},
onClick(event) {
if (!this.disabled && (!this.overlay || !this.overlay.contains(event.target)) && !DomHandler.hasClass(event.target, 'p-multiselect-close')) {
DomHandler.hasClass(event.target, 'p-multiselect-close');
if (this.overlayVisible)
this.hide();
else
this.show();
this.$refs.focusInput.focus();
}
},
onCloseClick() {
this.hide();
},
onKeyDown(event) {
switch(event.which) {
//down
case 40:
if (this.visibleOptions && !this.overlayVisible && event.altKey) {
this.show();
}
break;
//space
case 32:
if (!this.overlayVisible) {
this.show();
event.preventDefault();
}
break;
//enter and escape
case 13:
case 27:
if (this.overlayVisible) {
this.hide();
event.preventDefault();
}
break;
//tab
case 9:
this.hide();
break;
default:
break;
}
},
onOptionSelect(event, option) {
if (this.disabled || this.isOptionDisabled(option)) {
return;
}
let selected = this.isSelected(option);
let value = null;
if (selected)
value = this.modelValue.filter(val => !ObjectUtils.equals(val, this.getOptionValue(option), this.equalityKey));
else
value = [...this.modelValue || [], this.getOptionValue(option)];
this.$emit('update:modelValue', value);
this.$emit('change', {originalEvent: event, value: value});
},
onOptionKeyDown(event, option) {
let listItem = event.target;
switch(event.which) {
//down
case 40:
var nextItem = this.findNextItem(listItem);
if (nextItem) {
nextItem.focus();
}
event.preventDefault();
break;
//up
case 38:
var prevItem = this.findPrevItem(listItem);
if (prevItem) {
prevItem.focus();
}
event.preventDefault();
break;
//enter
case 13:
this.onOptionSelect(event, option);
event.preventDefault();
break;
default:
break;
}
},
findNextItem(item) {
let nextItem = item.nextElementSibling;
if (nextItem)
return DomHandler.hasClass(nextItem, 'p-disabled') || DomHandler.hasClass(nextItem, 'p-multiselect-item-group') ? this.findNextItem(nextItem) : nextItem;
else
return null;
},
findPrevItem(item) {
let prevItem = item.previousElementSibling;
if (prevItem)
return DomHandler.hasClass(prevItem, 'p-disabled') || DomHandler.hasClass(prevItem, 'p-multiselect-item-group') ? this.findPrevItem(prevItem) : prevItem;
else
return null;
},
onOverlayEnter() {
this.overlay.style.zIndex = String(DomHandler.generateZIndex());
this.appendContainer();
this.alignOverlay();
this.bindOutsideClickListener();
this.bindScrollListener();
this.bindResizeListener();
this.$emit('show');
},
onOverlayLeave() {
this.unbindOutsideClickListener();
this.unbindScrollListener();
this.unbindResizeListener();
this.$emit('hide');
this.overlay = null;
},
alignOverlay() {
if (this.appendTo) {
DomHandler.absolutePosition(this.overlay, this.$el);
this.overlay.style.minWidth = DomHandler.getOuterWidth(this.$el) + 'px';
}
else {
DomHandler.relativePosition(this.overlay, this.$el);
}
},
bindOutsideClickListener() {
if (!this.outsideClickListener) {
this.outsideClickListener = (event) => {
if (this.overlayVisible && this.isOutsideClicked(event)) {
this.hide();
}
};
document.addEventListener('click', this.outsideClickListener);
}
},
unbindOutsideClickListener() {
if (this.outsideClickListener) {
document.removeEventListener('click', this.outsideClickListener);
this.outsideClickListener = null;
}
},
bindScrollListener() {
if (!this.scrollHandler) {
this.scrollHandler = new ConnectedOverlayScrollHandler(this.$refs.container, () => {
if (this.overlayVisible) {
this.hide();
}
});
}
this.scrollHandler.bindScrollListener();
},
unbindScrollListener() {
if (this.scrollHandler) {
this.scrollHandler.unbindScrollListener();
}
},
bindResizeListener() {
if (!this.resizeListener) {
this.resizeListener = () => {
if (this.overlayVisible) {
this.hide();
}
};
window.addEventListener('resize', this.resizeListener);
}
},
unbindResizeListener() {
if (this.resizeListener) {
window.removeEventListener('resize', this.resizeListener);
this.resizeListener = null;
}
},
isOutsideClicked(event) {
return !(this.$el.isSameNode(event.target) || this.$el.contains(event.target) || (this.overlay && this.overlay.contains(event.target)));
},
getLabelByValue(val) {
let option;
if (this.options) {
if (this.optionGroupLabel) {
for (let optionGroup of this.options) {
option = this.findOptionByValue(val, this.getOptionGroupChildren(optionGroup));
if (option) {
break;
}
}
}
else {
option = this.findOptionByValue(val, this.options);
}
}
return option ? this.getOptionLabel(option): null;
},
findOptionByValue(val, list) {
for (let option of list) {
let optionValue = this.getOptionValue(option);
if(ObjectUtils.equals(optionValue, val, this.equalityKey)) {
return option;
}
}
return null;
},
onToggleAll(event) {
let value = null;
if (this.allSelected) {
value = [];
}
else if (this.visibleOptions) {
if (this.optionGroupLabel) {
value = [];
this.visibleOptions.forEach(optionGroup => value = [...value, ...this.getOptionGroupChildren(optionGroup)]);
}
else {
value = this.visibleOptions.map(option => this.getOptionValue(option));
}
}
this.$emit('update:modelValue', value);
this.$emit('change', {originalEvent: event, value: value});
},
appendContainer() {
if (this.appendTo) {
if (this.appendTo === 'body')
document.body.appendChild(this.overlay);
else
document.getElementById(this.appendTo).appendChild(this.overlay);
}
},
restoreAppend() {
if (this.overlay && this.appendTo) {
if (this.appendTo === 'body')
document.body.removeChild(this.overlay);
else
document.getElementById(this.appendTo).removeChild(this.overlay);
}
},
onFilterChange(event) {
this.$emit('filter', {originalEvent: event, value: event.target.value});
if (this.overlayVisible) {
this.alignOverlay();
}
},
overlayRef(el) {
this.overlay = el;
},
removeChip(item) {
let value = this.modelValue.filter(val => !ObjectUtils.equals(val, item, this.equalityKey));
this.$emit('update:modelValue', value);
this.$emit('change', {originalEvent: event, value: value});
}
},
computed: {
visibleOptions() {
if (this.filterValue) {
if (this.optionGroupLabel) {
let filteredGroups = [];
for (let optgroup of this.options) {
let filteredSubOptions = FilterService.filter(this.getOptionGroupChildren(optgroup), this.searchFields, this.filterValue, this.filterMatchMode, this.filterLocale);
if (filteredSubOptions && filteredSubOptions.length) {
filteredGroups.push({...optgroup, ...{items: filteredSubOptions}});
}
}
return filteredGroups
}
else {
return FilterService.filter(this.options, this.searchFields, this.filterValue, 'contains', this.filterLocale);
}
}
else {
return this.options;
}
},
containerClass() {
return [
'p-multiselect p-component p-inputwrapper',
{
'p-multiselect-chip': this.display === 'chip',
'p-disabled': this.disabled,
'p-focus': this.focused,
'p-inputwrapper-filled': this.modelValue && this.modelValue.length,
'p-inputwrapper-focus': this.focused || this.overlayVisible
}
];
},
labelClass() {
return [
'p-multiselect-label',
{
'p-placeholder': this.label === this.placeholder,
'p-multiselect-label-empty': !this.placeholder && (!this.modelValue || this.modelValue.length === 0)
}
];
},
label() {
let label;
if (this.modelValue && this.modelValue.length) {
label = '';
for(let i = 0; i < this.modelValue.length; i++) {
if(i !== 0) {
label += ', ';
}
label += this.getLabelByValue(this.modelValue[i]);
}
}
else {
label = this.placeholder;
}
return label;
},
allSelected() {
if (this.filterValue && this.filterValue.trim().length > 0) {
if (this.visibleOptions.length === 0) {
return false;
}
if (this.optionGroupLabel) {
for (let optionGroup of this.visibleOptions) {
for (let option of this.getOptionGroupChildren(optionGroup)) {
if (!this.isSelected(option)) {
return false;
}
}
}
}
else {
for (let option of this.visibleOptions) {
if (!this.isSelected(option)) {
return false;
}
}
}
return true;
}
else {
if (this.modelValue && this.options) {
let optionCount = 0;
if (this.optionGroupLabel)
this.options.forEach(optionGroup => optionCount += this.getOptionGroupChildren(optionGroup).length);
else
optionCount = this.options.length;
return optionCount > 0 && optionCount === this.modelValue.length;
}
return false;
}
},
equalityKey() {
return this.optionValue ? null : this.dataKey;
},
searchFields() {
return this.filterFields || [this.optionLabel];
},
emptyFilterMessageText() {
return this.emptyFilterMessage || this.$primevue.config.locale.emptyFilterMessage;
},
emptyMessageText() {
return this.emptyMessage || this.$primevue.config.locale.emptyMessage;
}
},
directives: {
'ripple': Ripple
}
}
</script>
<style>
.p-multiselect {
display: inline-flex;
cursor: pointer;
position: relative;
user-select: none;
}
.p-multiselect-trigger {
display: flex;
align-items: center;
justify-content: center;
flex-shrink: 0;
}
.p-multiselect-label-container {
overflow: hidden;
flex: 1 1 auto;
cursor: pointer;
}
.p-multiselect-label {
display: block;
white-space: nowrap;
cursor: pointer;
overflow: hidden;
text-overflow: ellipsis;
}
.p-multiselect-label-empty {
overflow: hidden;
visibility: hidden;
}
.p-multiselect-token {
cursor: default;
display: inline-flex;
align-items: center;
flex: 0 0 auto;
}
.p-multiselect-token-icon {
cursor: pointer;
}
.p-multiselect .p-multiselect-panel {
min-width: 100%;
}
.p-multiselect-panel {
position: absolute;
}
.p-multiselect-items-wrapper {
overflow: auto;
}
.p-multiselect-items {
margin: 0;
padding: 0;
list-style-type: none;
}
.p-multiselect-item {
cursor: pointer;
display: flex;
align-items: center;
font-weight: normal;
white-space: nowrap;
position: relative;
overflow: hidden;
}
.p-multiselect-item-group {
cursor: auto;
}
.p-multiselect-header {
display: flex;
align-items: center;
justify-content: space-between;
}
.p-multiselect-filter-container {
position: relative;
flex: 1 1 auto;
}
.p-multiselect-filter-icon {
position: absolute;
top: 50%;
margin-top: -.5rem;
}
.p-multiselect-filter-container .p-inputtext {
width: 100%;
}
.p-multiselect-close {
display: flex;
align-items: center;
justify-content: center;
flex-shrink: 0;
overflow: hidden;
position: relative;
}
.p-fluid .p-multiselect {
display: flex;
}
</style>