Press n or j to go to the next uncovered block, b, p or k for the previous block.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | 7x 7x | <template> <f-scroll-view color="light" style="display: inline-block" :class="isInput? $style.searchShape : $style.scrollShape"> <u-menu :class="$style.umenuShape"> <u-menu-item v-for="(item, index) in data" :key="index" :ref="index" :has-sub="hasSub(item)" :disabled="item.disabled" :class="$style.select_item" :select="index === umenuIndex" @click="clickMenuitem(item, index)"> <span v-if="item.highlighterHtml" v-html="item.highlighterHtml"></span> <template v-else> {{ $at(item, field) }} </template> <span :class="$style.spinner" v-if="item.loading"></span> </u-menu-item> </u-menu> </f-scroll-view> </template> <script> import { findScrollParent } from '../../utils/dom'; export default { name: 'u-cascader-item', props: { data: { type: Array, default: () => [] }, field: { type: String, default: 'text' }, trigger: { type: String, default: 'click' }, lazy: { type: Boolean, default: false }, componentIndex: Number, // 第几个cascaderitem组件 selectSubIdnex: Number, // parent选择了第几个cascaderitem组件 isInput: Boolean, menuIndex: Number, changeOnSelect: { type: Boolean, default: false, }, }, data() { return { umenuIndex: this.menuIndex !== undefined ? this.menuIndex : -1, }; }, watch: { selectSubIdnex(newValue) { if (this.componentIndex > newValue) this.umenuIndex = -1; }, data(newdata, predata) { if (newdata.length > predata.length) this.$nextTick(() => { this.addMouseenter(newdata.slice(predata.length), predata.length); }); }, menuIndex(value) { this.selectMenuitem(value); }, }, mounted() { this.addMouseenter(this.data, 0); }, methods: { clickMenuitem(selectItem, index) { this.selectMenuitem(index); this.$emit('select-umenuitem', selectItem, this.componentIndex); if (this.lazy) { if (selectItem.leaf || this.changeOnSelect) this.$emit('select-lastvalue'); } else if (!selectItem.children || this.changeOnSelect) { this.$emit('select-lastvalue'); } }, hoverSelect(selectItem, level) { this.selectMenuitem(level); this.$emit('select-umenuitem', selectItem, this.componentIndex); }, addMouseenter(newDatas, length) { if (this.trigger.toLowerCase() === 'hover') { newDatas.forEach((_, index) => { const currentIndex = length + index; // v-for中使用ref,vue的内部逻辑会自动将ref生成数组,所以要添一个xxx[0] this.$refs[currentIndex][0].$el.addEventListener('mouseenter', () => { if (!newDatas[index].disabled) this.hoverSelect(newDatas[index], currentIndex); }); }); } }, selectMenuitem(level) { if (level === -1) return; this.umenuIndex = level; this.ensureFocusedInView(); }, ensureFocusedInView() { if (!this.$refs[this.umenuIndex]) { return; } const focusedEl = this.$refs[this.umenuIndex][0].$el; let parentEl = focusedEl.parentElement; parentEl = findScrollParent(focusedEl); if (parentEl) { if (parentEl.scrollTop < focusedEl.offsetTop + focusedEl.offsetHeight - parentEl.clientHeight) { parentEl.scrollTop = focusedEl.offsetTop + focusedEl.offsetHeight - parentEl.clientHeight; } if (parentEl.scrollTop > focusedEl.offsetTop) parentEl.scrollTop = focusedEl.offsetTop; } }, keyboardShift(count, enter) { let newUmenuIndex = this.umenuIndex + count; while (this.data[newUmenuIndex] && this.data[newUmenuIndex].disabled) { newUmenuIndex += count; } if (newUmenuIndex < 0 || newUmenuIndex >= this.data.length) return; const selectItem = this.data[newUmenuIndex]; this.selectMenuitem(newUmenuIndex); this.$emit('select-umenuitem', selectItem, this.componentIndex); if (enter && (!selectItem.children || this.changeOnSelect)) this.$emit('select-lastvalue'); }, hasSub(item) { let show = false; if (item.children || ('leaf' in item && !item.leaf)) if (!item.loading) show = true; return show; }, }, }; </script> <style module src="./item.css"> </style> |