411 lines
13 KiB
Vue
411 lines
13 KiB
Vue
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<template>
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<div ref="container" :class="containerClass" @click="onClick">
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<div class="p-hidden-accessible">
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<input ref="focusInput" type="text" role="listbox" :id="inputId" readonly :disabled="disabled" @focus="onFocus" @blur="onBlur" @keydown="onKeyDown" :tabindex="tabindex"
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aria-haspopup="true" :aria-expanded="overlayVisible" :aria-labelledby="ariaLabelledBy"/>
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</div>
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<div class="p-treeselect-label-container">
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<div :class="labelClass">
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<slot name="value" :value="selectedNodes" :placeholder="placeholder">
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<template v-if="display === 'comma'">
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{{label || 'empty'}}
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</template>
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<template v-else-if="display === 'chip'">
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<div v-for="node of selectedNodes" class="p-treeselect-token" :key="node.key">
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<span class="p-treeselect-token-label">{{node.label}}</span>
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</div>
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<template v-if="emptyValue">{{placeholder || 'empty'}}</template>
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</template>
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</slot>
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</div>
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</div>
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<div class="p-treeselect-trigger">
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<span class="p-treeselect-trigger-icon pi pi-chevron-down"></span>
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</div>
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<Teleport :to="appendTo">
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<transition name="p-connected-overlay" @enter="onOverlayEnter" @leave="onOverlayLeave">
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<div :ref="overlayRef" v-if="overlayVisible" @click="onOverlayClick" :class="['p-treeselect-panel p-component', panelClass]">
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<slot name="header" :value="modelValue" :options="options"></slot>
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<div class="p-treeselect-items-wrapper" :style="{'max-height': scrollHeight}">
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<TSTree :value="options" :selectionMode="selectionMode" @update:selectionKeys="onSelectionChange" :selectionKeys="modelValue"
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:expandedKeys="expandedKeys" @update:expandedKeys="onNodeToggle" :metaKeySelection="metaKeySelection"
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@node-expand="$emit('node-expand', $event)" @node-collapse="$emit('node-collapse', $event)"
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@node-select="onNodeSelect" @node-unselect="onNodeUnselect" />
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<div v-if="emptyOptions" class="p-treeselect-empty-message">
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<slot name="empty">{{emptyMessageText}}</slot>
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</div>
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</div>
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<slot name="footer" :value="modelValue" :options="options"></slot>
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</div>
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</transition>
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</Teleport>
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</div>
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</template>
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<script>
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import {ConnectedOverlayScrollHandler,DomHandler} from 'primevue/utils';
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import OverlayEventBus from 'primevue/overlayeventbus';
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import Tree from 'primevue/tree';
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import Ripple from 'primevue/ripple';
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export default {
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emits: ['update:modelValue', 'before-show', 'before-hide', 'change', 'show', 'hide', 'node-select', 'node-unselect', 'node-expand', 'node-collapse'],
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props: {
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modelValue: null,
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options: Array,
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scrollHeight: {
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type: String,
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default: '400px'
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},
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placeholder: String,
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disabled: Boolean,
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tabindex: String,
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inputId: String,
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ariaLabelledBy: null,
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selectionMode: {
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type: String,
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default: 'single'
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},
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panelClass: {
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type: String,
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default: null
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},
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appendTo: {
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type: String,
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default: 'body'
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},
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emptyMessage: {
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type: String,
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default: null
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},
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display: {
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type: String,
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default: 'comma'
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},
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metaKeySelection: {
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type: Boolean,
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default: true
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}
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},
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watch: {
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modelValue() {
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this.touched = false;
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}
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},
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data() {
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return {
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focused: false,
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overlayVisible: false,
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expandedKeys: {},
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touched: false
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};
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},
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outsideClickListener: null,
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resizeListener: null,
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scrollHandler: null,
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overlay: null,
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beforeUnmount() {
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this.unbindOutsideClickListener();
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this.unbindResizeListener();
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if (this.scrollHandler) {
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this.scrollHandler.destroy();
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this.scrollHandler = null;
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}
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this.overlay = null;
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},
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methods: {
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show() {
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this.$emit('before-show');
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this.overlayVisible = true;
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},
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hide() {
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this.$emit('before-hide');
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this.overlayVisible = false;
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},
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onFocus() {
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this.focused = true;
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},
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onBlur() {
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this.focused = false;
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},
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onClick(event) {
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if (!this.disabled && (!this.overlay || !this.overlay.contains(event.target)) && !DomHandler.hasClass(event.target, 'p-treeselect-close')) {
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if (this.overlayVisible)
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this.hide();
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else
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this.show();
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this.$refs.focusInput.focus();
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}
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},
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onSelectionChange(keys) {
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this.$emit('update:modelValue', keys);
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this.$emit('change', keys);
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},
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onNodeSelect(node) {
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this.$emit('node-select', node);
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if (this.selectionMode === 'single') {
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this.hide();
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}
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},
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onNodeUnselect(node) {
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this.$emit('node-select', node);
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},
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onNodeToggle(keys) {
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this.expandedKeys = keys;
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this.touched = true;
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},
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onKeyDown(event) {
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switch(event.which) {
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//down
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case 40:
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if (!this.overlayVisible && event.altKey) {
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this.show();
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}
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break;
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//space
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case 32:
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if (!this.overlayVisible) {
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this.show();
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event.preventDefault();
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}
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break;
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//enter and escape
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case 13:
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case 27:
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if (this.overlayVisible) {
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this.hide();
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event.preventDefault();
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}
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break;
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//tab
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case 9:
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this.hide();
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break;
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default:
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break;
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}
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},
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onOverlayEnter() {
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this.overlay.style.zIndex = String(DomHandler.generateZIndex());
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this.alignOverlay();
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this.bindOutsideClickListener();
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this.bindScrollListener();
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this.bindResizeListener();
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this.$emit('show');
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},
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onOverlayLeave() {
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this.unbindOutsideClickListener();
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this.unbindScrollListener();
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this.unbindResizeListener();
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this.$emit('hide');
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this.overlay = null;
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},
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alignOverlay() {
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this.overlay.style.minWidth = DomHandler.getOuterWidth(this.$el) + 'px';
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DomHandler.absolutePosition(this.overlay, this.$el);
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},
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bindOutsideClickListener() {
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if (!this.outsideClickListener) {
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this.outsideClickListener = (event) => {
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if (this.overlayVisible && this.isOutsideClicked(event)) {
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this.hide();
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}
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};
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document.addEventListener('click', this.outsideClickListener);
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}
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},
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unbindOutsideClickListener() {
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if (this.outsideClickListener) {
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document.removeEventListener('click', this.outsideClickListener);
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this.outsideClickListener = null;
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}
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},
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bindScrollListener() {
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if (!this.scrollHandler) {
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this.scrollHandler = new ConnectedOverlayScrollHandler(this.$refs.container, () => {
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if (this.overlayVisible) {
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this.hide();
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}
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});
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}
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this.scrollHandler.bindScrollListener();
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},
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unbindScrollListener() {
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if (this.scrollHandler) {
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this.scrollHandler.unbindScrollListener();
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}
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},
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bindResizeListener() {
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if (!this.resizeListener) {
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this.resizeListener = () => {
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if (this.overlayVisible) {
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this.hide();
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}
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};
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window.addEventListener('resize', this.resizeListener);
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}
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},
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unbindResizeListener() {
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if (this.resizeListener) {
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window.removeEventListener('resize', this.resizeListener);
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this.resizeListener = null;
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}
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},
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isOutsideClicked(event) {
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return !(this.$el.isSameNode(event.target) || this.$el.contains(event.target) || (this.overlay && this.overlay.contains(event.target)));
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},
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overlayRef(el) {
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this.overlay = el;
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},
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onOverlayClick(event) {
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OverlayEventBus.emit('overlay-click', {
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originalEvent: event,
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target: this.$el
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});
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},
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searchBranch(node, parentNode, keys, selectedNodes) {
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if (node) {
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if (this.isSelected(node, keys)) {
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selectedNodes.push(node);
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if (parentNode && !this.touched) {
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this.expandedKeys[parentNode.key] = true;
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}
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delete keys[node.key];
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}
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if (Object.keys(keys).length && node.children) {
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for (let childNode of node.children) {
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this.searchBranch(childNode, node, keys, selectedNodes);
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}
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}
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}
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else {
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for (let childNode of this.options) {
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this.searchBranch(childNode, null, keys, selectedNodes);
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}
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}
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},
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isSelected(node, keys) {
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return this.selectionMode === 'checkbox' ? keys[node.key] && keys[node.key].checked : keys[node.key];
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}
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},
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computed: {
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containerClass() {
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return [
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'p-treeselect p-component p-inputwrapper',
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{
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'p-treeselect-chip': this.display === 'chip',
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'p-disabled': this.disabled,
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'p-focus': this.focused,
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'p-inputwrapper-filled': !this.emptyValue,
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'p-inputwrapper-focus': this.focused || this.overlayVisible
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}
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];
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},
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labelClass() {
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return [
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'p-treeselect-label',
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{
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'p-placeholder': this.label === this.placeholder,
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'p-treeselect-label-empty': !this.placeholder && this.emptyValue
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}
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];
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},
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selectedNodes() {
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let selectedNodes = [];
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if (this.modelValue && this.options) {
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let keys = {...this.modelValue};
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this.searchBranch(null, null, keys, selectedNodes);
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}
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return selectedNodes;
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},
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label() {
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let value = this.selectedNodes;
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return value.length ? value.map(node => node.label).join(', '): this.placeholder;
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},
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emptyMessageText() {
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return this.emptyMessage || this.$primevue.config.locale.emptyMessage;
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},
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emptyValue() {
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return !this.modelValue || Object.keys(this.modelValue).length === 0;
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},
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emptyOptions() {
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return !this.options || this.options.length === 0;
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}
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},
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components: {
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'TSTree': Tree
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},
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directives: {
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'ripple': Ripple
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}
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}
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</script>
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<style>
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.p-treeselect {
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display: inline-flex;
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cursor: pointer;
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position: relative;
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user-select: none;
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}
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.p-treeselect-trigger {
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display: flex;
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align-items: center;
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justify-content: center;
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flex-shrink: 0;
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}
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.p-treeselect-label-container {
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overflow: hidden;
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flex: 1 1 auto;
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cursor: pointer;
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}
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.p-treeselect-label {
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display: block;
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white-space: nowrap;
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cursor: pointer;
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overflow: hidden;
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text-overflow: ellipsis;
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}
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.p-treeselect-label-empty {
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overflow: hidden;
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visibility: hidden;
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}
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.p-treeselect-token {
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cursor: default;
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display: inline-flex;
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align-items: center;
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flex: 0 0 auto;
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}
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.p-treeselect .p-treeselect-panel {
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min-width: 100%;
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}
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.p-treeselect-panel {
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position: absolute;
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}
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.p-treeselect-items-wrapper {
|
||
|
|
overflow: auto;
|
||
|
|
}
|
||
|
|
|
||
|
|
.p-fluid .p-treeselect {
|
||
|
|
display: flex;
|
||
|
|
}
|
||
|
|
</style>
|