uni-zhihuikuangshan/components/ly-tree-nvue/ly-tree-node.vue

<template>
	<view v-if="node.visible" 
		class="ly-tree-node" 
		name="LyTreeNode" 
		ref="node">
		<view class="ly-tree-node__content" 
			:class="{
				'ly-tree-node__content-current': node.isCurrent && highlightCurrent
			}" 
			:style="{ 
				'padding-left': (node.level - 1) * indent + 'px' 
			}">
			<text v-if="node.isLeaf" 
				class="ly-tree-node__expand-icon-holder">
			</text>	
			<text v-else 
				class="ly-tree-node__expand-icon" 
				@click.stop="handleExpandIconClick">
				{{node.expanded ? iconExpand : iconCollapse}}
			</text>

			<ly-checkbox v-if="checkboxVisible || radioVisible" 
				:type="checkboxVisible ? 'checkbox' : 'radio'" 
				:checked="node.checked"
				:indeterminate="node.indeterminate" 
				:disabled="!!node.disabled" 
				@check="handleCheckChange(!node.checked)" />

			<image v-if="node.loading" 
				class="ly-tree-node__loading-icon" 
				mode="widthFix" 
				src="data:image/gif;base64,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">
			</image>

			<template v-if="node.icon && node.icon.length > 0">
				<image v-if="node.icon.indexOf('/') !== -1" 
					class="ly-tree-node__icon" 
					:src="node.icon" 
					mode="widthFix"
					@error="handleImageError">
				</image>
				<text v-else 
					class="ly-tree-node__icon" 
					:class="node.icon">
				</text>
			</template>

			<text class="ly-tree-node__label" 
				@click.stop="handleClick">
				{{node.label}}
			</text>
		</view>

		<view v-if="(!renderAfterExpand || childNodeRendered)" 
			class="ly-tree-node__children" 
			:class="{'ly-tree-node__children-hide': !expanded}" 
			role="group">
			<ly-tree-node v-for="cNodeId in node.childNodesId" 
				:nodeId="cNodeId" 
				:render-after-expand="renderAfterExpand"
				:show-checkbox="showCheckbox" 
				:show-radio="showRadio" 
				:check-only-leaf="checkOnlyLeaf" 
				:key="getNodeKey(cNodeId)"
				:indent="indent" 
				:icon-class="iconClass">
			</ly-tree-node>
		</view>
	</view>
</template>

<script>
	import {
		getNodeKey
	} from './tool/util.js';
	import lyCheckbox from './components/ly-checkbox.vue';
	
	// #ifdef APP-NVUE
	var domModule = weex.requireModule('dom');
	domModule.addRule('fontFace', {
		'fontFamily': "lyExpandIcons",
		'src': "url('data:font/truetype;charset=utf-8;base64,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')"
	});
	// #endif

	export default {
		name: 'LyTreeNode',

		componentName: 'LyTreeNode',

		components: {
			lyCheckbox
		},

		props: {
			nodeId: [Number, String],
			renderAfterExpand: {
				type: Boolean,
				default: true
			},
			checkOnlyLeaf: {
				type: Boolean,
				default: false
			},
			showCheckbox: {
				type: Boolean,
				default: false
			},
			showRadio: {
				type: Boolean,
				default: false
			},
			indent: Number,
			iconClass: String
		},

		data() {
			return {
				node: {
					indeterminate: false,
					checked: false,
					expanded: false
				},
				expanded: false,
				childNodeRendered: false,
				oldChecked: null,
				oldIndeterminate: null,
				highlightCurrent: false,
				iconExpand: '\ue8ec',
				iconCollapse: '\ue8ed'
			};
		},

		inject: ['tree'],

		computed: {
			checkboxVisible() {
				if (this.checkOnlyLeaf) {
					return this.showCheckbox && this.node.isLeaf;
				}

				return this.showCheckbox;
			},
			radioVisible() {
				if (this.checkOnlyLeaf) {
					return this.showRadio && this.node.isLeaf;
				}

				return this.showRadio;
			}
		},

		watch: {
			'node.indeterminate'(val) {
				this.handleSelectChange(this.node.checked, val);
			},
			'node.checked'(val) {
				this.handleSelectChange(val, this.node.indeterminate);
			},
			'node.expanded'(val) {
				this.$nextTick(() => this.expanded = val);
				if (val) {
					this.childNodeRendered = true;
				}
			}
		},

		methods: {
			getNodeKey(nodeId) {
				let node = this.tree.store.root.getChildNodes([nodeId])[0];
				return getNodeKey(this.tree.nodeKey, node.data);
			},

			handleSelectChange(checked, indeterminate) {
				if (this.oldChecked !== checked && this.oldIndeterminate !== indeterminate) {

					if (this.checkOnlyLeaf && !this.node.isLeaf) return;

					if (this.checkboxVisible) {
						const allNodes = this.tree.store._getAllNodes();
						this.tree.$emit('check-change', {
							checked,
							indeterminate,
							node: this.node,
							data: this.node.data,
							checkedall: allNodes.every(item => item.checked)
						});
					} else {
						this.tree.$emit('radio-change', {
							checked,
							node: this.node,
							data: this.node.data,
							checkedall: false
						});
					}
				}

				if (!this.expanded && this.tree.expandOnCheckNode && checked) {
					this.handleExpandIconClick();
				}

				this.oldChecked = checked;
				this.indeterminate = indeterminate;
			},

			handleClick(e) {
				this.tree.store.setCurrentNode(this.node);
				this.tree.$emit('current-change', {
					node: this.node,
					data: this.tree.store.currentNode ? this.tree.store.currentNode.data : null,
					currentNode: this.tree.store.currentNode
				});
				this.tree.currentNode = this.node;

				if (this.tree.expandOnClickNode) {
					this.handleExpandIconClick();
				}

				if (this.tree.checkOnClickNode && !this.node.disabled) {
					(this.checkboxVisible || this.radioVisible) && this.handleCheckChange(!this.node.checked);
				}

				this.tree.$emit('node-click', this.node);
				
				// #ifdef APP-NVUE
				e.stopPropagation()
				// #endif
			},

			handleExpandIconClick() {
				if (this.node.isLeaf) return;

				if (this.expanded) {
					this.tree.$emit('node-collapse', this.node);
					this.node.collapse();
				} else {
					this.node.expand();
					this.tree.$emit('node-expand', this.node);

					if (this.tree.accordion) {
						uni.$emit(`${this.tree.elId}-tree-node-expand`, this.node);
					}
				}
			},

			handleCheckChange(checked) {
				if (this.node.disabled) return;

				if (this.checkboxVisible) {
					this.node.setChecked(checked, !(this.tree.checkStrictly || this.checkOnlyLeaf));
				} else {
					this.node.setRadioChecked(checked);
				}

				this.$nextTick(() => {
					this.tree.$emit('check', {
						node: this.node,
						data: this.node.data,
						checkedNodes: this.tree.store.getCheckedNodes(),
						checkedKeys: this.tree.store.getCheckedKeys(),
						halfCheckedNodes: this.tree.store.getHalfCheckedNodes(),
						halfCheckedKeys: this.tree.store.getHalfCheckedKeys()
					});
				});
			},
			
			handleImageError() {
				this.node.icon = this.tree.defaultNodeIcon;
			}
		},

		created() {
			if (!this.tree) {
				throw new Error('Can not find node\'s tree.');
			}
			
			const props = this.tree.props || {};
			const childrenKey = props['children'] || 'children';

			this.node = this.tree.store.nodesMap[this.nodeId];
			this.highlightCurrent = this.tree.highlightCurrent;

			if (this.node.expanded) {
				this.expanded = true;
				this.childNodeRendered = true;
			}

			this.$watch(`node.data.${childrenKey}`, () => {
				this.node.updateChildren();
			});

			if (this.tree.accordion) {
				uni.$on(`${this.tree.elId}-tree-node-expand`, node => {
					if (this.node.id !== node.id && this.node.level === node.level) {
						this.node.collapse();
					}
				});
			}
		},

		beforeDestroy() {
			this.$parent = null;
		}
	};
</script>

<style>
	.ly-tree-node__content {
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		flex-direction: row;
		align-items: center;
		height: 70rpx;
	}
	
	.ly-tree-node__expand-icon-holder {
		width: 50rpx;
		height: 36rpx;
		padding-right: 16rpx;
	}

	.ly-tree-node__icon {
		width: 40rpx;
		height: 40rpx;
		overflow: hidden;
		margin-right: 16rpx;
	}
	
	.ly-tree-node__loading-icon {
		margin-right: 16rpx;
		width: 30rpx;
		height: 30rpx;
	}

	.ly-tree-node__label {
		font-size: 28rpx;
		color: #606266;
		width: 750rpx;
	}
	
	.ly-tree-node__children {
		overflow: hidden;
		background-color: transparent
	}
	
	.ly-tree-node__children-hide {
		height: 0px;
		line-height: 0px;
	}

	.ly-tree-node__content-current {
		background-color: #F5F7FA
	}
	
	/* icon-start */
	/* #ifndef APP-NVUE */
	@font-face {
		font-family: "lyExpandIcons";
		src: url('data:font/truetype;charset=utf-8;base64,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') format('truetype');
	}
	/* #endif */
	
	.ly-tree-node__expand-icon {
		font-family: lyExpandIcons;
		font-size: 36rpx;
		font-style: normal;
		text-decoration: none;
		text-align: center;
		color: #DCDFE6;
		font-weight: 500;
		padding-right: 16rpx
	}
	/* icon-end */
</style>