How to use Vue and jsmind to implement node style customization and skin switching of mind maps?

How to use Vue and jsmind to implement node style customization and skin switching of mind maps?

Mind map is a commonly used thinking tool, which can help us organize our thoughts, record our thinking process and show relationships. Vue.js is a popular front-end framework, and jsmind is a mind mapping plug-in based on Vue. It provides a rich API that can easily customize node styles and implement skin switching.

First, we need to install and introduce jsmind and Vue.js. You can find how to install it on jsmind's GitHub page, or install it through npm.

Next, we create a Vue component to host the mind map. In the template, we can use <div id="jsmind_container"></div> to create a container.

<template>
  <div id="jsmind_container"></div>
</template>

In Vue's life cycle method, we can instantiate jsmind and mount it on the container. At the same time, we can define a node style object and a skin style object for node style customization and skin switching.

<script>
import jsMind from 'jsmind'
import 'jsmind/style/jsmind.css'

export default {
  mounted() {
    const container = document.getElementById('jsmind_container')
    const options = {
      theme: 'default', // 初始皮肤
      container,
      editable: true,
      shortcut: { enable: false }
    }
    const jm = new jsMind(options)

    // 自定义节点样式
    const topicStyles = {
      root: { background: '#FFCC99' },
      business: { background: '#66CCFF' },
      development: { background: '#66FF99' },
      design: { background: '#FF99CC' }
    }

    // 皮肤切换
    const skinStyles = {
      default: {},
      dark: { background: '#333', color: '#fff' },
      light: { background: '#fff', color: '#333' },
      blue: { background: '#66CCFF', color: '#fff' }
    }

    jm.add_theme('custom', topicStyles)
    jm.add_theme('skins', skinStyles)

    jm.init()
    jm.show()
    this.jm = jm
  }
}
</script>

In the above code, we first introduced jsmind and the corresponding style files. Then, in the mounted life cycle method, we initialize the jsmind instance and mount it on jsmind_container. We also defined two objects, topicStyles and skinStyles, which are used to customize node styles and implement skin switching respectively. Through the jm.add_theme method, we name these two objects custom and skins themes respectively, and add them to jsmind. Finally, call the jm.init() method and the jm.show() method to initialize the mind map and display it.

In the template, we can apply custom node styles by defining the style attribute of the node.

<template>
  <div id="jsmind_container"></div>
</template>

<script>
export default {
  mounted() {
    // 省略其他内容...
    const options = {
      // 省略其他配置...
      mode: 'full',
      default_event_handle: {
        enable_mousedown_handle: false
      },
      event_handle: {
        click_element_handle: (el) => {
          this.handleNodeClick(el)
        },
        mouse_over_handle: (el) => {
          this.handleNodeHover(el)
        },
        mouse_leave_handle: () => {
          this.handleNodeLeave()
        }
      }
    }

    // 省略其他内容...
  },
  methods: {
    handleNodeClick(el) {
      const nodeId = el.getAttribute('nodeid')
      const nodeData = this.jm.get_node(nodeId)
      // 处理节点点击事件...
    },
    handleNodeHover(el) {
      const nodeId = el.getAttribute('nodeid')
      const nodeData = this.jm.get_node(nodeId)
      // 处理节点悬停事件...
    },
    handleNodeLeave() {
      // 处理节点离开事件...
    }
  }
}
</script>

In the above code, we added the event_handle attribute in the configuration options and defined click_element_handle, mouse_over_handle and The mouse_leave_handle method responds to the click, hover and leave events of the node respectively.

Through the above code examples, we have completed the function of using Vue and jsmind to customize the node style and skin switching of the mind map. You can further modify the customized node style and skin style objects according to actual needs to achieve different node styles and skin effects.

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