target/classes/static/plugins/element-ui/packages/cascader-panel/src/cascader-node.vue

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<script>
  import ElCheckbox from 'element-ui/packages/checkbox';
  import ElRadio from 'element-ui/packages/radio';
  import { isEqual } from 'element-ui/src/utils/util';

  const stopPropagation = e => e.stopPropagation();

  export default {
    inject: ['panel'],

    components: {
      ElCheckbox,
      ElRadio
    },

    props: {
      node: {
        required: true
      },
      nodeId: String
    },

    computed: {
      config() {
        return this.panel.config;
      },
      isLeaf() {
        return this.node.isLeaf;
      },
      isDisabled() {
        return this.node.isDisabled;
      },
      checkedValue() {
        return this.panel.checkedValue;
      },
      isChecked() {
        return this.node.isSameNode(this.checkedValue);
      },
      inActivePath() {
        return this.isInPath(this.panel.activePath);
      },
      inCheckedPath() {
        if (!this.config.checkStrictly) return false;

        return this.panel.checkedNodePaths
          .some(checkedPath => this.isInPath(checkedPath));
      },
      value() {
        return this.node.getValueByOption();
      }
    },

    methods: {
      handleExpand() {
        const { panel, node, isDisabled, config } = this;
        const { multiple, checkStrictly } = config;

        if (!checkStrictly && isDisabled || node.loading) return;

        if (config.lazy && !node.loaded) {