How to implement the search and filtering functions of mind maps through Vue and jsmind?

How to implement the search and filtering functions of mind maps through Vue and jsmind?

Mind map is a commonly used tool for recording and organizing thinking, which can help people display and understand the relationship between information more clearly. However, when there are a large number of nodes in the mind map, it becomes very difficult to find specific nodes. In order to solve this problem, we can combine Vue and jsmind to implement the search and filtering functions of the mind map to help users find the required nodes more quickly.

Below we will introduce how to use Vue and jsmind to implement the search and filtering functions of mind maps. First, we need to prepare a data containing the mind map structure, as shown below:

const mindData = {
    "meta": {
        "name": "思维导图",
        "version": "0.2.0"
    },
    "format": "node_tree",
    "data": {
        "id": "root",
        "topic": "思维导图",
        "expanded": true,
        "children": [{
            "id": "1",
            "topic": "节点1",
            "expanded": true,
            "children": [{
                    "id": "1.1",
                    "topic": "子节点1.1",
                    "expanded": true,
                    "children": []
                },
                {
                    "id": "1.2",
                    "topic": "子节点1.2",
                    "expanded": true,
                    "children": []
                }
            ]
        }]
    }
};

Next, we need to introduce the jsmind library into the Vue instance and pass the mind map data to the jsmind instance to Render a mind map. At the same time, add search and filter input boxes and buttons in Vue's template:

<template>
  <div>
    <input v-model="searchText" type="text" placeholder="在思维导图中搜索" />
    <button @click="filterMinds">搜索</button>
    <div ref="jsmindContainer"></div>
  </div>
</template>

Then, in Vue's script, define relevant data and functions to implement the search and filter functions of the mind map:

<script>
import jsMind from "jsmind";
import "jsmind/style/jsmind.css";

export default {
  data() {
    return {
      mind: null,
      searchText: ""
    };
  },
  mounted() {
    this.initMind();
  },
  methods: {
    initMind() {
      const container = this.$refs.jsmindContainer;

      this.mind = new jsMind({
          container,
          editable: false
      });
      
      this.mind.show(mindData);
    },
    filterMinds() {
      const nodes = mindData.data.children[0].children;

      for (let i = nodes.length - 1; i > -1; i--) {
          if (!nodes[i].topic.includes(this.searchText)) {
              nodes.splice(i, 1);
          }
      }

      this.mind.show(mindData);
    }
  }
};
</script>

In the above code, we first initialize the mind map in the mounted life cycle hook and render it to the page. Then, a filterMinds function is defined to filter the nodes of the mind map based on search keywords. This function traverses the nodes to determine whether the node's topic contains the search keyword. If it does not, delete the node from the node array. Finally, call the mind.show method to re-render the mind map.

Finally, add the above Vue component to the root Vue instance, and introduce the jsmind library into the page to see the mind map and search box. Users can enter keywords in the search box and click the search button, and the mind map nodes will be filtered based on the keywords and the mind map will be re-rendered. In this way, users can find the required nodes more quickly.

The above is an introduction to how to implement the search and filtering functions of mind maps through Vue and jsmind. Hope this helps!

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