How to use Vue and jsmind to implement the global style and theme switching function of mind maps?

How to use Vue and jsmind to implement the global style and theme switching function of mind maps?

Introduction:
Mind map is a commonly used thinking tool that can help us carry out logical thinking and expression of thinking. This article will introduce how to use Vue and jsmind library to build a mind map with global styles and theme switching functions.

1. Preparation
Before we start writing code, we need to prepare some necessary work.

1. Create Vue project
   First, we need to create a Vue project. You can use Vue CLI to quickly build a project skeleton. Open the terminal and run the following command:

vue create mindmap
cd mindmap

2. Install jsmind and jsmind.css
   We need to install the jsmind library to implement the mind map function, and also need to import the jsmind.css file , used to set the style of the mind map. Continue to run the following command in the terminal:

npm install jsmind

Then, introduce the jsmind and jsmind.css files into the project’s entry file (main.js):

import 'jsmind/style/jsmind.css'
import jsMind from 'jsmind'

3. Create Component
   We need to create a Mindmap component to realize the mind map display and style switching functions. First, create a components folder under the src folder, and then create the Mindmap.vue file in the folder. Write the following code in Mindmap.vue:

<template>
  <div>
    <div id="mindmap"></div>
    <div>
      <button @click="changeTheme">切换主题</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      theme: 'default'
    }
  },
  mounted() {
    const options = {
      container: 'mindmap',
      editable: true,
      theme: this.theme
    }
    const mind = jsMind.init(options)
    const mindData = {
      meta: {
        name: '思维导图'
      },
      format: 'node_tree',
      data: {
        id: 'root',
        topic: '思维导图',
        children: [
          { id: '1', parentid: 'root', topic: '主题1' },
          { id: '2', parentid: 'root', topic: '主题2' },
          // 更多节点...
        ]
      }
    }
    mind.show(mindData)
  },
  methods: {
    changeTheme() {
      this.theme = this.theme === 'default' ? 'primary' : 'default'
      mind.set_theme(this.theme)
    }
  }
}
</script>

2. Code Analysis
Let us analyze the above code in turn:

1. Template
   In the template , we use a div element with the id of mindmap to accommodate the mind map. And added a button to switch themes.
2. Script
   In data, we define a variable named theme to store the current theme. In the mounted hook function, we use the jsMind library to initialize a mind object and set the theme to the current theme.
3. Initialize the mind map
   In the mounted hook function, we first define an options object, in which the container attribute specifies that the container of the mind map is the div element with the ID of mindmap, and the editable attribute is set to true Editing is allowed, and the theme attribute uses the theme variable we stored in data.

Next, we initialize the mind object and pass in options. Next, we create a mindData object containing mind map data and use the show method of the mind object to display the data in the mind map.

4. Switch Theme
   The changeTheme method is used to switch themes. We switch the theme by modifying the theme variable, and use the set_theme method of the mind object to update the theme of the mind map.

3. Run the project
After completing the above code, we need to run the project to view the style and theme switching function of the mind map. Run the following command in the terminal:

npm run serve

Open the browser and visit http://localhost:8080, you will see the mind map and the button to switch themes.

Conclusion:
This article introduces how to use Vue and jsmind libraries to implement the global style and theme switching functions of mind maps. Through the introduction and use of jsmind and the writing of Vue components, we can flexibly control the style and theme of the mind map to meet the needs of different scenarios. Hope this article can help you.

The above is the detailed content of How to use Vue and jsmind to implement the global style and theme switching function of mind maps?. For more information, please follow other related articles on the PHP Chinese website!