vxe-table-select-area/packages/select-area/utils/hooks-manager.js

一个基于 vxe-table 的可区域选中复制、粘贴的组件

/* eslint-disable prefer-const */
/*
hook system

*/
export default class Hooks {
  constructor () {
    // ...

    this.hooks = {
      /*
            table-scroll1:[
                function(){},
                function(){}
            ],
            table-scroll2:[
                function(){},
                function(){}
            ]

            */
    }
  }

  /**
     * Add listener to plugin hooks system.
     *
     * @param {string} hookName The hook name.
     * @param {Function} callback The listener function to add.
     */
  addHook (hookName, callback) {
    let hooks

    if (!this.hooks[hookName]) {
      this.hooks[hookName] = []
    }

    hooks = this.hooks[hookName]

    // exclude repeat hook
    let isRepeat = false
    for (let i = 0; i < hooks.length; i++) {
      if (hooks[i] === callback) {
        isRepeat = true
        break
      }
    }

    if (isRepeat) {
      console.warn(`Repeat hook name:${hookName}`)
    } else {
      hooks.push(callback)
    }
  }

  /**
     * Trigger hook.
     *
     * @param {string} hookName The hook name.
     * @param {Argument} args
     */
  triggerHook (hookName) {
    const hooks = this.hooks[hookName]

    if (hooks && hooks.length) {
      const args = Array.prototype.slice.call(arguments)

      hooks.forEach((hook) => {
        // exclude hookName param
        hook.apply(null, args.slice(1))
      })
    }
    // else {
    //     console.warn(`Can't find hook name:${hookName}`);
    // }
  }
}