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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 | 7x 7x 7x | <template> <div :class="$style.root"> <div :class="$style.text">{{ text }}</div> <div :class="$style.sub"> <slot></slot> </div> </div> </template> <script> import MEmitter from '../m-emitter.vue'; export default { name: 'm-node', rootName: 'm-root', mixins: [MEmitter], props: { text: String }, data() { return { nodeVMs: [], rootVM: undefined, parentVM: undefined }; }, created() { !this.parentVM && this.$contact(this.$options.name, (parentVM) => { this.parentVM = parentVM; this.rootVM = parentVM.rootVM; parentVM.nodeVMs.push(this); }); // 顺序不能换 !this.parentVM && this.$contact(this.$options.rootName, (rootVM) => { this.rootVM = rootVM; rootVM.nodeVMs.push(this); }); }, destroyed() { this.$contact(this.$options.rootName, (rootVM) => { const index = rootVM.nodeVMs.indexOf(this); ~index && rootVM.nodeVMs.splice(index, 1); this.rootVM = undefined; }); this.$contact(this.$options.name, (parentVM) => { const index = parentVM.nodeVMs.indexOf(this); ~index && parentVM.nodeVMs.splice(index, 1); this.rootVM = undefined; this.parentVM = undefined; }); }, }; </script> <style module> .root { margin-left: 20px; } .text { position: relative; padding: 4px 12px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; } </style> |