primevue-mirror/components/lib/cascadeselect/CascadeSelect.vue

744 lines
30 KiB
Vue

<template>
<div ref="container" :class="cx('root')" :style="sx('root')" @click="onContainerClick($event)" v-bind="ptm('root')" data-pc-name="cascadeselect">
<div class="p-hidden-accessible" v-bind="ptm('hiddenInputWrapper')" :data-p-hidden-accessible="true">
<input
ref="focusInput"
:id="inputId"
type="text"
:class="inputClass"
:style="inputStyle"
readonly
:disabled="disabled"
:placeholder="placeholder"
:tabindex="!disabled ? tabindex : -1"
role="combobox"
:aria-label="ariaLabel"
:aria-labelledby="ariaLabelledby"
aria-haspopup="tree"
:aria-expanded="overlayVisible"
:aria-controls="id + '_tree'"
:aria-activedescendant="focused ? focusedOptionId : undefined"
@focus="onFocus"
@blur="onBlur"
@keydown="onKeyDown"
v-bind="{ ...inputProps, ...ptm('input') }"
/>
</div>
<span :class="cx('label')" v-bind="ptm('label')">
<slot name="value" :value="modelValue" :placeholder="placeholder">
{{ label }}
</slot>
</span>
<div :class="cx('dropdownButton')" role="button" tabindex="-1" aria-hidden="true" v-bind="ptm('dropdownButton')">
<slot v-if="loading" name="loadingicon" :class="cx('loadingIcon')">
<span v-if="loadingIcon" :class="[cx('loadingIcon'), 'pi-spin', loadingIcon]" aria-hidden="true" v-bind="ptm('loadingIcon')" />
<SpinnerIcon v-else :class="cx('loadingIcon')" spin aria-hidden="true" v-bind="ptm('loadingIcon')" />
</slot>
<slot v-else name="dropdownicon" :class="cx('dropdownIcon')">
<component :is="dropdownIcon ? 'span' : 'ChevronDownIcon'" :class="[cx('dropdownIcon'), dropdownIcon]" aria-hidden="true" v-bind="ptm('dropdownIcon')" />
</slot>
</div>
<span role="status" aria-live="polite" class="p-hidden-accessible" v-bind="ptm('hiddenSearchResult')" :data-p-hidden-accessible="true">
{{ searchResultMessageText }}
</span>
<Portal :appendTo="appendTo">
<transition name="p-connected-overlay" @enter="onOverlayEnter" @after-enter="onOverlayAfterEnter" @leave="onOverlayLeave" @after-leave="onOverlayAfterLeave" v-bind="ptm('transition')">
<div v-if="overlayVisible" :ref="overlayRef" :class="[cx('panel'), panelClass]" :style="panelStyle" @click="onOverlayClick" @keydown="onOverlayKeyDown" v-bind="{ ...panelProps, ...ptm('panel') }">
<div :class="cx('wrapper')" v-bind="ptm('wrapper')">
<CascadeSelectSub
:id="id + '_tree'"
role="tree"
aria-orientation="horizontal"
:selectId="id"
:focusedOptionId="focused ? focusedOptionId : undefined"
:options="processedOptions"
:activeOptionPath="activeOptionPath"
:level="0"
:templates="$slots"
:optionLabel="optionLabel"
:optionValue="optionValue"
:optionDisabled="optionDisabled"
:optionGroupIcon="optionGroupIcon"
:optionGroupLabel="optionGroupLabel"
:optionGroupChildren="optionGroupChildren"
@option-change="onOptionChange"
:pt="pt"
:unstyled="unstyled"
/>
</div>
<span role="status" aria-live="polite" class="p-hidden-accessible" v-bind="ptm('hiddenSelectedMessage')" :data-p-hidden-accessible="true">
{{ selectedMessageText }}
</span>
</div>
</transition>
</Portal>
</div>
</template>
<script>
import AngleRightIcon from 'primevue/icons/angleright';
import ChevronDownIcon from 'primevue/icons/chevrondown';
import SpinnerIcon from 'primevue/icons/spinner';
import OverlayEventBus from 'primevue/overlayeventbus';
import Portal from 'primevue/portal';
import { ConnectedOverlayScrollHandler, DomHandler, ObjectUtils, UniqueComponentId, ZIndexUtils } from 'primevue/utils';
import BaseCascadeSelect from './BaseCascadeSelect.vue';
import CascadeSelectSub from './CascadeSelectSub.vue';
export default {
name: 'CascadeSelect',
extends: BaseCascadeSelect,
emits: ['update:modelValue', 'change', 'focus', 'blur', 'click', 'group-change', 'before-show', 'before-hide', 'hide', 'show'],
outsideClickListener: null,
scrollHandler: null,
resizeListener: null,
overlay: null,
searchTimeout: null,
searchValue: null,
focusOnHover: false,
data() {
return {
id: this.$attrs.id,
focused: false,
focusedOptionInfo: { index: -1, level: 0, parentKey: '' },
activeOptionPath: [],
overlayVisible: false,
dirty: false
};
},
watch: {
'$attrs.id': function (newValue) {
this.id = newValue || UniqueComponentId();
},
options() {
this.autoUpdateModel();
}
},
beforeMount() {
this.id = this.id || UniqueComponentId();
},
mounted() {
this.autoUpdateModel();
},
beforeUnmount() {
this.unbindOutsideClickListener();
this.unbindResizeListener();
if (this.scrollHandler) {
this.scrollHandler.destroy();
this.scrollHandler = null;
}
if (this.overlay) {
ZIndexUtils.clear(this.overlay);
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;
},
isOptionDisabled(option) {
return this.optionDisabled ? ObjectUtils.resolveFieldData(option, this.optionDisabled) : false;
},
getOptionGroupLabel(optionGroup) {
return this.optionGroupLabel ? ObjectUtils.resolveFieldData(optionGroup, this.optionGroupLabel) : null;
},
getOptionGroupChildren(optionGroup, level) {
return ObjectUtils.isString(this.optionGroupChildren) ? ObjectUtils.resolveFieldData(optionGroup, this.optionGroupChildren) : ObjectUtils.resolveFieldData(optionGroup, this.optionGroupChildren[level]);
},
isOptionGroup(option, level) {
return Object.prototype.hasOwnProperty.call(option, this.optionGroupChildren[level]);
},
getProccessedOptionLabel(processedOption = {}) {
const grouped = this.isProccessedOptionGroup(processedOption);
return grouped ? this.getOptionGroupLabel(processedOption.option, processedOption.level) : this.getOptionLabel(processedOption.option);
},
isProccessedOptionGroup(processedOption) {
return ObjectUtils.isNotEmpty(processedOption?.children);
},
show(isFocus) {
this.$emit('before-show');
this.overlayVisible = true;
this.activeOptionPath = this.hasSelectedOption ? this.findOptionPathByValue(this.modelValue) : this.activeOptionPath;
if (this.hasSelectedOption && ObjectUtils.isNotEmpty(this.activeOptionPath)) {
const processedOption = this.activeOptionPath[this.activeOptionPath.length - 1];
this.focusedOptionInfo = { index: this.autoOptionFocus ? processedOption.index : -1, level: processedOption.level, parentKey: processedOption.parentKey };
} else {
this.focusedOptionInfo = { index: this.autoOptionFocus ? this.findFirstFocusedOptionIndex() : -1, level: 0, parentKey: '' };
}
isFocus && DomHandler.focus(this.$refs.focusInput);
},
hide(isFocus) {
const _hide = () => {
this.$emit('before-hide');
this.overlayVisible = false;
this.activeOptionPath = [];
this.focusedOptionInfo = { index: -1, level: 0, parentKey: '' };
isFocus && DomHandler.focus(this.$refs.focusInput);
};
setTimeout(() => {
_hide();
}, 0); // For ScreenReaders
},
onFocus(event) {
if (this.disabled) {
// For ScreenReaders
return;
}
this.focused = true;
this.$emit('focus', event);
},
onBlur(event) {
this.focused = false;
this.focusedOptionInfo = { index: -1, level: 0, parentKey: '' };
this.searchValue = '';
this.$emit('blur', event);
},
onKeyDown(event) {
if (this.disabled || this.loading) {
event.preventDefault();
return;
}
const metaKey = event.metaKey || event.ctrlKey;
switch (event.code) {
case 'ArrowDown':
this.onArrowDownKey(event);
break;
case 'ArrowUp':
this.onArrowUpKey(event);
break;
case 'ArrowLeft':
this.onArrowLeftKey(event);
break;
case 'ArrowRight':
this.onArrowRightKey(event);
break;
case 'Home':
this.onHomeKey(event);
break;
case 'End':
this.onEndKey(event);
break;
case 'Space':
this.onSpaceKey(event);
break;
case 'Enter':
case 'NumpadEnter':
this.onEnterKey(event);
break;
case 'Escape':
this.onEscapeKey(event);
break;
case 'Tab':
this.onTabKey(event);
break;
case 'PageDown':
case 'PageUp':
case 'Backspace':
case 'ShiftLeft':
case 'ShiftRight':
//NOOP
break;
default:
if (!metaKey && ObjectUtils.isPrintableCharacter(event.key)) {
!this.overlayVisible && this.show();
this.searchOptions(event, event.key);
}
break;
}
},
onOptionChange(event) {
const { originalEvent, processedOption, isFocus, isHide } = event;
if (ObjectUtils.isEmpty(processedOption)) return;
const { index, level, parentKey, children } = processedOption;
const grouped = ObjectUtils.isNotEmpty(children);
const activeOptionPath = this.activeOptionPath.filter((p) => p.parentKey !== parentKey);
activeOptionPath.push(processedOption);
this.focusedOptionInfo = originalEvent?.type === 'click' ? { index: -1, level, parentKey } : { index, level, parentKey };
this.activeOptionPath = activeOptionPath;
grouped ? this.onOptionGroupSelect(originalEvent, processedOption) : this.onOptionSelect(originalEvent, processedOption, isHide);
isFocus && DomHandler.focus(this.$refs.focusInput);
},
onOptionSelect(event, processedOption, isHide = true) {
const value = this.getOptionValue(processedOption?.option);
this.activeOptionPath.forEach((p) => (p.selected = true));
this.updateModel(event, value);
isHide && this.hide(true);
},
onOptionGroupSelect(event, processedOption) {
this.dirty = true;
this.$emit('group-change', { originalEvent: event, value: processedOption.option });
},
onContainerClick(event) {
if (this.disabled || this.loading) {
return;
}
if (!this.overlay || !this.overlay.contains(event.target)) {
this.overlayVisible ? this.hide() : this.show();
DomHandler.focus(this.$refs.focusInput);
}
this.$emit('click', event);
},
onOverlayClick(event) {
OverlayEventBus.emit('overlay-click', {
originalEvent: event,
target: this.$el
});
},
onOverlayKeyDown(event) {
switch (event.code) {
case 'Escape':
this.onEscapeKey(event);
break;
default:
break;
}
},
onArrowDownKey(event) {
const optionIndex = this.focusedOptionInfo.index !== -1 ? this.findNextOptionIndex(this.focusedOptionInfo.index) : this.findFirstFocusedOptionIndex();
this.changeFocusedOptionIndex(event, optionIndex);
!this.overlayVisible && this.show();
event.preventDefault();
},
onArrowUpKey(event) {
if (event.altKey) {
if (this.focusedOptionInfo.index !== -1) {
const processedOption = this.visibleOptions[this.focusedOptionInfo.index];
const grouped = this.isProccessedOptionGroup(processedOption);
!grouped && this.onOptionChange({ originalEvent: event, processedOption });
}
this.overlayVisible && this.hide();
event.preventDefault();
} else {
const optionIndex = this.focusedOptionInfo.index !== -1 ? this.findPrevOptionIndex(this.focusedOptionInfo.index) : this.findLastFocusedOptionIndex();
this.changeFocusedOptionIndex(event, optionIndex);
!this.overlayVisible && this.show();
event.preventDefault();
}
},
onArrowLeftKey(event) {
if (this.overlayVisible) {
const processedOption = this.visibleOptions[this.focusedOptionInfo.index];
const parentOption = this.activeOptionPath.find((p) => p.key === processedOption?.parentKey);
const matched = this.focusedOptionInfo.parentKey === '' || (parentOption && parentOption.key === this.focusedOptionInfo.parentKey);
const root = ObjectUtils.isEmpty(processedOption?.parent);
if (matched) {
this.activeOptionPath = this.activeOptionPath.filter((p) => p.parentKey !== this.focusedOptionInfo.parentKey);
}
if (!root) {
this.focusedOptionInfo = { index: -1, parentKey: parentOption ? parentOption.parentKey : '' };
this.searchValue = '';
this.onArrowDownKey(event);
}
event.preventDefault();
}
},
onArrowRightKey(event) {
if (this.overlayVisible) {
const processedOption = this.visibleOptions[this.focusedOptionInfo.index];
const grouped = this.isProccessedOptionGroup(processedOption);
if (grouped) {
const matched = this.activeOptionPath.some((p) => processedOption?.key === p.key);
if (matched) {
this.focusedOptionInfo = { index: -1, parentKey: processedOption?.key };
this.searchValue = '';
this.onArrowDownKey(event);
} else {
this.onOptionChange({ originalEvent: event, processedOption });
}
}
event.preventDefault();
}
},
onHomeKey(event) {
this.changeFocusedOptionIndex(event, this.findFirstOptionIndex());
!this.overlayVisible && this.show();
event.preventDefault();
},
onEndKey(event) {
this.changeFocusedOptionIndex(event, this.findLastOptionIndex());
!this.overlayVisible && this.show();
event.preventDefault();
},
onEnterKey(event) {
if (!this.overlayVisible) {
this.onArrowDownKey(event);
} else {
if (this.focusedOptionInfo.index !== -1) {
const processedOption = this.visibleOptions[this.focusedOptionInfo.index];
const grouped = this.isProccessedOptionGroup(processedOption);
this.onOptionChange({ originalEvent: event, processedOption });
!grouped && this.hide();
}
}
event.preventDefault();
},
onSpaceKey(event) {
this.onEnterKey(event);
},
onEscapeKey(event) {
this.overlayVisible && this.hide(true);
event.preventDefault();
},
onTabKey(event) {
if (this.focusedOptionInfo.index !== -1) {
const processedOption = this.visibleOptions[this.focusedOptionInfo.index];
const grouped = this.isProccessedOptionGroup(processedOption);
!grouped && this.onOptionChange({ originalEvent: event, processedOption });
}
this.overlayVisible && this.hide();
},
onOverlayEnter(el) {
ZIndexUtils.set('overlay', el, this.$primevue.config.zIndex.overlay);
DomHandler.addStyles(el, { position: 'absolute', top: '0', left: '0' });
this.alignOverlay();
this.scrollInView();
},
onOverlayAfterEnter() {
this.bindOutsideClickListener();
this.bindScrollListener();
this.bindResizeListener();
this.$emit('show');
},
onOverlayLeave() {
this.unbindOutsideClickListener();
this.unbindScrollListener();
this.unbindResizeListener();
this.$emit('hide');
this.overlay = null;
this.dirty = false;
},
onOverlayAfterLeave(el) {
ZIndexUtils.clear(el);
},
alignOverlay() {
if (this.appendTo === 'self') {
DomHandler.relativePosition(this.overlay, this.$el);
} else {
this.overlay.style.minWidth = DomHandler.getOuterWidth(this.$el) + 'px';
DomHandler.absolutePosition(this.overlay, this.$el);
}
},
bindOutsideClickListener() {
if (!this.outsideClickListener) {
this.outsideClickListener = (event) => {
if (this.overlayVisible && this.overlay && !this.$el.contains(event.target) && !this.overlay.contains(event.target)) {
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 && !DomHandler.isTouchDevice()) {
this.hide();
}
};
window.addEventListener('resize', this.resizeListener);
}
},
unbindResizeListener() {
if (this.resizeListener) {
window.removeEventListener('resize', this.resizeListener);
this.resizeListener = null;
}
},
isOptionMatched(processedOption) {
return this.isValidOption(processedOption) && this.getProccessedOptionLabel(processedOption).toLocaleLowerCase(this.searchLocale).startsWith(this.searchValue.toLocaleLowerCase(this.searchLocale));
},
isValidOption(processedOption) {
return ObjectUtils.isNotEmpty(processedOption) && !this.isOptionDisabled(processedOption.option);
},
isValidSelectedOption(processedOption) {
return this.isValidOption(processedOption) && this.isSelected(processedOption);
},
isSelected(processedOption) {
return this.activeOptionPath.some((p) => p.key === processedOption.key);
},
findFirstOptionIndex() {
return this.visibleOptions.findIndex((processedOption) => this.isValidOption(processedOption));
},
findLastOptionIndex() {
return ObjectUtils.findLastIndex(this.visibleOptions, (processedOption) => this.isValidOption(processedOption));
},
findNextOptionIndex(index) {
const matchedOptionIndex = index < this.visibleOptions.length - 1 ? this.visibleOptions.slice(index + 1).findIndex((processedOption) => this.isValidOption(processedOption)) : -1;
return matchedOptionIndex > -1 ? matchedOptionIndex + index + 1 : index;
},
findPrevOptionIndex(index) {
const matchedOptionIndex = index > 0 ? ObjectUtils.findLastIndex(this.visibleOptions.slice(0, index), (processedOption) => this.isValidOption(processedOption)) : -1;
return matchedOptionIndex > -1 ? matchedOptionIndex : index;
},
findSelectedOptionIndex() {
return this.visibleOptions.findIndex((processedOption) => this.isValidSelectedOption(processedOption));
},
findFirstFocusedOptionIndex() {
const selectedIndex = this.findSelectedOptionIndex();
return selectedIndex < 0 ? this.findFirstOptionIndex() : selectedIndex;
},
findLastFocusedOptionIndex() {
const selectedIndex = this.findSelectedOptionIndex();
return selectedIndex < 0 ? this.findLastOptionIndex() : selectedIndex;
},
findOptionPathByValue(value, processedOptions, level = 0) {
processedOptions = processedOptions || (level === 0 && this.processedOptions);
if (!processedOptions) return null;
if (ObjectUtils.isEmpty(value)) return [];
for (let i = 0; i < processedOptions.length; i++) {
const processedOption = processedOptions[i];
if (ObjectUtils.equals(value, this.getOptionValue(processedOption.option), this.equalityKey)) {
return [processedOption];
}
const matchedOptions = this.findOptionPathByValue(value, processedOption.children, level + 1);
if (matchedOptions) {
matchedOptions.unshift(processedOption);
return matchedOptions;
}
}
},
searchOptions(event, char) {
this.searchValue = (this.searchValue || '') + char;
let optionIndex = -1;
let matched = false;
if (this.focusedOptionInfo.index !== -1) {
optionIndex = this.visibleOptions.slice(this.focusedOptionInfo.index).findIndex((processedOption) => this.isOptionMatched(processedOption));
optionIndex = optionIndex === -1 ? this.visibleOptions.slice(0, this.focusedOptionInfo.index).findIndex((processedOption) => this.isOptionMatched(processedOption)) : optionIndex + this.focusedOptionInfo.index;
} else {
optionIndex = this.visibleOptions.findIndex((processedOption) => this.isOptionMatched(processedOption));
}
if (optionIndex !== -1) {
matched = true;
}
if (optionIndex === -1 && this.focusedOptionInfo.index === -1) {
optionIndex = this.findFirstFocusedOptionIndex();
}
if (optionIndex !== -1) {
this.changeFocusedOptionIndex(event, optionIndex);
}
if (this.searchTimeout) {
clearTimeout(this.searchTimeout);
}
this.searchTimeout = setTimeout(() => {
this.searchValue = '';
this.searchTimeout = null;
}, 500);
return matched;
},
changeFocusedOptionIndex(event, index) {
if (this.focusedOptionInfo.index !== index) {
this.focusedOptionInfo.index = index;
this.scrollInView();
if (this.selectOnFocus) {
this.onOptionChange({ originalEvent: event, processedOption: this.visibleOptions[index], isHide: false });
}
}
},
scrollInView(index = -1) {
const id = index !== -1 ? `${this.id}_${index}` : this.focusedOptionId;
const element = DomHandler.findSingle(this.list, `li[id="${id}"]`);
if (element) {
element.scrollIntoView && element.scrollIntoView({ block: 'nearest', inline: 'start' });
}
},
autoUpdateModel() {
if (this.selectOnFocus && this.autoOptionFocus && !this.hasSelectedOption) {
this.focusedOptionInfo.index = this.findFirstFocusedOptionIndex();
this.onOptionChange({ processedOption: this.visibleOptions[this.focusedOptionInfo.index], isHide: false });
!this.overlayVisible && (this.focusedOptionInfo = { index: -1, level: 0, parentKey: '' });
}
},
updateModel(event, value) {
this.$emit('update:modelValue', value);
this.$emit('change', { originalEvent: event, value });
},
createProcessedOptions(options, level = 0, parent = {}, parentKey = '') {
const processedOptions = [];
options &&
options.forEach((option, index) => {
const key = (parentKey !== '' ? parentKey + '_' : '') + index;
const newOption = {
option,
index,
level,
key,
parent,
parentKey
};
newOption['children'] = this.createProcessedOptions(this.getOptionGroupChildren(option, level), level + 1, newOption, key);
processedOptions.push(newOption);
});
return processedOptions;
},
overlayRef(el) {
this.overlay = el;
}
},
computed: {
hasSelectedOption() {
return ObjectUtils.isNotEmpty(this.modelValue);
},
label() {
const label = this.placeholder || 'p-emptylabel';
if (this.hasSelectedOption) {
const activeOptionPath = this.findOptionPathByValue(this.modelValue);
const processedOption = ObjectUtils.isNotEmpty(activeOptionPath) ? activeOptionPath[activeOptionPath.length - 1] : null;
return processedOption ? this.getOptionLabel(processedOption.option) : label;
}
return label;
},
processedOptions() {
return this.createProcessedOptions(this.options || []);
},
visibleOptions() {
const processedOption = this.activeOptionPath.find((p) => p.key === this.focusedOptionInfo.parentKey);
return processedOption ? processedOption.children : this.processedOptions;
},
equalityKey() {
return this.optionValue ? null : this.dataKey;
},
searchResultMessageText() {
return ObjectUtils.isNotEmpty(this.visibleOptions) ? this.searchMessageText.replaceAll('{0}', this.visibleOptions.length) : this.emptySearchMessageText;
},
searchMessageText() {
return this.searchMessage || this.$primevue.config.locale.searchMessage || '';
},
emptySearchMessageText() {
return this.emptySearchMessage || this.$primevue.config.locale.emptySearchMessage || '';
},
emptyMessageText() {
return this.emptyMessage || this.$primevue.config.locale.emptyMessage || '';
},
selectionMessageText() {
return this.selectionMessage || this.$primevue.config.locale.selectionMessage || '';
},
emptySelectionMessageText() {
return this.emptySelectionMessage || this.$primevue.config.locale.emptySelectionMessage || '';
},
selectedMessageText() {
return this.hasSelectedOption ? this.selectionMessageText.replaceAll('{0}', '1') : this.emptySelectionMessageText;
},
focusedOptionId() {
return this.focusedOptionInfo.index !== -1 ? `${this.id}${ObjectUtils.isNotEmpty(this.focusedOptionInfo.parentKey) ? '_' + this.focusedOptionInfo.parentKey : ''}_${this.focusedOptionInfo.index}` : null;
}
},
components: {
CascadeSelectSub: CascadeSelectSub,
Portal: Portal,
ChevronDownIcon: ChevronDownIcon,
SpinnerIcon: SpinnerIcon,
AngleRightIcon: AngleRightIcon
}
};
</script>