ja-contextmenu v1.7.1

ja-contextmenu

Demo: npm run dev (this project)

Brief introduction

• Native js right-click menu encapsulation. It can also be used for the onclick event to open the menu.
• The default style is completed by inserting the style tag through js, paying attention to the class namespace.。
• Only the most basic styles are provided.
• TypeScript ✔
• default z-index = 5000;
• Gitee
• 中文🇨🇳

Usage

npm i ja-contextmenu

import ContextMenu from 'ja-contextmenu';
const contextMenu = new ContextMenu();
let menu = contextMenu.create({
  item:[
    { label:'go', onclick(e, payload){...} }
  ]
})
window.addEventListener('contextmenu',e => {menu.show(e, payload)})

## Attention
Please delete the "^"before the version number of ja-contextmenu in package.json after installation to prevent the unexpected automatic update of npm. <br>
(eg: "ja-contextmenu":"`^`1.3.0" => "ja-contextmenu":"1.3.0")
<br>
Limited energy, there is no guarantee that the use mode will not be changed when the small version is updated.
## Feature Log
- [x] MenuItemOption.onclick return true. click item not close menu. (v1.6.0)
- [x] MenuItemOption.icon support HTMLElement. (v1.6.0)
- [x] MenuItemOption.show: boolean。Control MenuItem show. (v1.5.0)
- [x] click close，capture:true.
- [x] Items with submenus cannot be clicked.
- [x] Support configuration class.
- [x] Support configuration class icon.
- [x] Hide when scrolling
- [x] Use position:fixed
- [x] title/tip formatter
- [x] Support incoming DOM，custom MenuItem
## Example
```javascript
import ContextMenu, { h } from 'ja-contextmenu'; // types.d.ts supported
// import ContextMenu from 'ja-contextmenu/src/index.ts'  
const contextMenu = new ContextMenu({
  width: 200, // default: 200
  fixMenuWhenScroll: false, // (position:fixed) default:false
  hideMenuWhenScroll: true // default:true
});
const menuOption = {
  items: [
    { 
      label: 'menu1', // name
      icon: './assets/images/ico.png', // icon url | HTMLElement
      class: 'customClass', // item class, default: ''
      tip: 'tip1', // Prompt text to the right of option, default: ''
      show: true, // default: true
      disabled: false, //  default: false
      onclick(e, payload) {
        // payload is the parameter passed in by calling the menu.show method.
        console.log('menu1 click', payload);
        // return true; // not close menu
      },
    },
    { type: '---' }, // <hr> split line
    { 
      // support function
      label: payload => 'menu2', 
      icon: payload => 'icon href2',
      class: payload => 'class2',
      tip: payload => 'tip2',
      show: payload => true,
      disabled: payload => true
      children: {
        width: 120, // default = parent menu width
        items: [
          {
            label: 'sub menu1',
            onclick: (e, payload) => {
              console.log('sub menu1 click', payload)
            }
          },{
            class: 'li-class-name',
            customItem: document.createElement('div')
          },{
            // I encapsulated the function h of createElement.
            customItem: h('div',[
              h('span', {
                // {[element.key]:value}
                textContent: 'hello', // element.textContent = 'hello'
                style:{
                  fontWeight:'bolder'.// element.style.fontWeight = 'holder'
                  cssText: 'font-size:14px;' // element.style.cssText = 'font-size:14px;'
                }, 
                className:'class-name', 
              }),
              h('span.class-name#id',' world')
            ])
          }
        ]
      }
    },
  ],
}
let menu = contextMenu.create(menuOption);

document.body.oncontextmenu = (e) => {
  let payload = 'payload data: callback when click items';
  menu.show(e, payload);
};
// or
someButton.onclick = (e) => {
  menu.show(e);
}

// menu.hide();
// menu.destroy();
// menu = null;

ContextMenu constructor

new ContextMenu(option: ContextMenuOption);

ContextMenuOption

key: type	default	desc
width: number	200	Menu width
fixMenuWhenScroll: boolean	false	Is the menu fixed when scrolling(hideMenuWhenScroll=false)
hideMenuWhenScroll: boolean	true	Whether to close the menu when scrolling.

ContextMenu instance method

create\<PayloadType>(option: MenuOption): MenuWrapper

Create a menu and return a MenuWrapper object.

MenuOption

param: type	default	desc
width?: number	200	Menu width. If the submenu is not configured, the width of the parent menu will be inherited.
class?: string|(payload)=>string		Menu ul class
items: MenuItemOption		List configuration item

MenuItemOption

MenuWrapper

const menu:MenuWrapper = contextMenu.create<Payload>(...)

1.show(pos: { x: number, y: number }, payload?: any)

Show menu

• pos: PointerEvent, MouseEvent, T extends { x: number, y: number }
• payload: Return in the onclick callback of the click menu.

2.hide()

3.destroy()

Typescript Demo

import ContextMenu from 'ja-contextmenu';
const contextMenu = new ContextMenu();
// Generic - PayloadType
const menu = contextMenu.create<number>({
  width: 100,
  items: [
    {
      label: 'label',
      onclick(e, payload:number) { // type
        console.log(payload);
      },
    },
  ],
});

menu.show({x: 100,y:100}, 1) // payload type :number
//menu.show({x: 100,y:100}, '2') // payload type error not number

About Project

• demo: npm run dev Demo code in /test folder
• build prod: npm run bd
• src/utils/h.ts => document.createElement()