widgets/main.js

export function createElement({ innerText, innerHTML, textContent, readOnly, children = [], dataset, style, classList = [], ...attributes }, tagName = 'div', __name = '') {
    const element = document.createElement(tagName)
    for (const key in attributes) {
        if (key.startsWith('on')) element[key] = attributes[key] // 如果是事件则直接赋值
        else element.setAttribute(key, attributes[key])          // 否则是属性则使用setAttribute
    }
    if (dataset) Object.assign(element.dataset, dataset)
    if (style) Object.assign(element.style, style)
    if (classList.length) element.classList.add(...classList)
    if (textContent) element.textContent = textContent
    if (innerText) element.innerText = innerText
    if (innerHTML) element.innerHTML = innerHTML
    if (readOnly) element.readOnly = readOnly
    if (children) children.forEach(child => element.appendChild(child))

    // 生成样式
    console.log('name:', __name)

    // 分解类名, 生成样式, 直接将样式赋予元素
    __name.split('.').map(name => name.split('_')).forEach(item => {
        console.log('item:', item)
        // 两个参数的情况下, 第一个参数是样式名, 第二个参数是样式值
        if (item.length === 2) {
            const [key, value] = item

            if (key === 'cursor') {
                element.style.cursor = value
                return
            }
            if (key === 'overflow') {
                element.style.overflow = value
                return
            }
            if (key === 'bg') {
                element.style.backgroundColor = value
                return
            }

            const styleMap = {
                'w': ['width'],
                'h': ['height'],
                'p': ['padding'],
                'm': ['margin'],
                'pt': ['paddingTop'],
                'pl': ['paddingLeft'],
                'pr': ['paddingRight'],
                'pb': ['paddingBottom'],
                'mt': ['marginTop'],
                'ml': ['marginLeft'],
                'mr': ['marginRight'],
                'mb': ['marginBottom'],
                'px': ['paddingLeft', 'paddingRight'],
                'py': ['paddingTop', 'paddingBottom'],
                'mx': ['marginLeft', 'marginRight'],
                'my': ['marginTop', 'marginBottom']
            }

            if (styleMap.hasOwnProperty(key)) {
                styleMap[key].forEach(style => {
                    element.style[style] = isNaN(value) ? value : `${value}px`
                })
                return
            }

            if (key === 'radius') {
                element.style.borderRadius = value
                return
            }
            if (key === 'font') {
                element.style.font = value
                return
            }
        }

        // 三个参数的情况下, 第一个参数是样式名, 第二个参数是样式, 第三个参数是数值
        if (item.length === 3) {
            if (item[0] === 'color') {
                element.style.color = item[1]
                return
            }
        }
        // px py mx my
        // p-1 p-2 p-3 p-4
        // m-1 m-2 m-3 m-4
        // w h z bg
    })

    //const className = __name.split('.').map(name => name.replace(/_/g, '-')).join(' ')
    //console.log('className:', className, element.classList)
    //if (className) element.classList.add(...className.split(' '))
    //// 获取全局样式表, 如果不存在则添加一个
    //if (!document.styleSheets.length) {
    //    document.head.appendChild(document.createElement('style'))
    //}
    //// 检查全局是否已经存在 cursor-pointer, 如果不存在则添加
    //const rules = Array.from(document.styleSheets[0].cssRules)
    //const styleSheet = document.styleSheets[0]
    //if (!rules.some(rule => rule.selectorText === '.cursor-pointer')) {
    //    styleSheet.insertRule('.cursor-pointer { cursor: pointer; }')
    //    console.log('insertRule:', styleSheet.cssRules)
    //}

    // 为元素添加链式操作方法
    element.w = (width) => { element.style.width = width; return element }
    element.h = (height) => { element.style.height = height; return element }
    element.x = (left) => { element.style.left = left; return element } // 以居中线对齐(flex)
    element.y = (top) => { element.style.top = top; return element }    // 以居中线对齐(flex)
    element.z = (zIndex) => { element.style.zIndex = zIndex; return element }
    element.cursor = (cursor) => { element.style.cursor = cursor; return element }
    element.text = (text) => { element.textContent = text; return element }
    element.html = (html) => { element.innerHTML = html; return element }
    element.childs = (childs) => { childs.forEach(child => element.appendChild(child)); return element }
    element.bg = (color) => { element.style.backgroundColor = color; return element }
    element.grid = (options) => { element.style.display = 'grid'; Object.assign(element.style, options); return element }
    element.flex = (options) => { element.style.display = 'flex'; Object.assign(element.style, options); return element }
    element.radius = (radius) => { element.style.borderRadius = radius; return element }
    element.p = (padding) => applyStyle(element, 'padding', padding)
    element.m = (margin) => applyStyle(element, 'margin', margin)
    element.mx = (value) => { element.style.marginLeft = value; element.style.marginRight = value; return element }
    element.my = (value) => { element.style.marginTop = value; element.style.marginBottom = value; return element }
    element.px = (value) => { element.style.paddingLeft = value; element.style.paddingRight = value; return element }
    element.py = (value) => { element.style.paddingTop = value; element.style.paddingBottom = value; return element }
    element.font = (font) => { element.style.font = font; return element }
    return element
}

function applyStyle(element, styleName, value) {
    if (typeof value === 'string') {
        element.style[styleName] = value;
    } else if (typeof value === 'object') {
        const { left = 0, right = 0, top = 0, bottom = 0 } = value;
        element.style[`${styleName}Left`] = left;
        element.style[`${styleName}Right`] = right;
        element.style[`${styleName}Top`] = top;
        element.style[`${styleName}Bottom`] = bottom;
    }
    return element;
}

/* HTML5 语义标签 */
export class BaseElement {
    constructor(options) {
        return createElement(options, this.constructor.name)
    }
    static text(text) {
        return createElement({ textContent: text }, this.name)
    }
    static html(html) {
        return createElement({ innerHTML: html }, this.name)
    }
    static childs(childs) {
        return createElement({ children: childs }, this.name)
    }
    static w(width, __name) {
        if (typeof width === 'number') width = width + 'px'
        return createElement({ style: { width } }, this.name, __name)
    }
    static h(height) {
        if (typeof height === 'number') height = height + 'px'
        return createElement({ style: { height } }, this.name)
    }
    static bg(color) {
        return createElement({ style: { backgroundColor: color } }, this.name)
    }
    static p(...args) {
        if (args.length === 1 && typeof args[0] === 'string') {
            return createElement({ style: { padding: args[0] } }, this.name)
        }
        if (args.length === 1 && typeof args[0] === 'object') {
            const { left = 0, right = 0, top = 0, bottom = 0 } = args[0]
            const style = { paddingLeft: left, paddingRight: right, paddingTop: top, paddingBottom: bottom }
            return createElement({ style }, this.name)
        }
        if (args.length === 4) {
            const [top, right, bottom, left] = args
            const style = { paddingTop: top, paddingRight: right, paddingBottom: bottom, paddingLeft: left }
            return createElement({ style }, this.name)
        }
    }
    static m(...args) {
        if (args.length === 1 && typeof args[0] === 'string') {
            return createElement({ style: { margin: args[0] } }, this.name)
        }
        if (args.length === 1 && typeof args[0] === 'object') {
            const { left = 0, right = 0, top = 0, bottom = 0 } = args[0]
            const style = { marginLeft: left, marginRight: right, marginTop: top, marginBottom: bottom }
            return createElement({ style }, this.name)
        }
        if (args.length === 4) {
            const [top, right, bottom, left] = args
            const style = { marginTop: top, marginRight: right, marginBottom: bottom, marginLeft: left }
            return createElement({ style }, this.name)
        }
    }
    static mx(value) {
        if (typeof value === 'number') value = value + 'px'
        return createElement({ style: { marginLeft: value, marginRight: value } }, this.name)
    }
    static my(value) {
        if (typeof value === 'number') value = value + 'px'
        return createElement({ style: { marginTop: value, marginBottom: value } }, this.name)
    }
    static px(value) {
        if (typeof value === 'number') value = value + 'px'
        return createElement({ style: { paddingLeft: value, paddingRight: value } }, this.name)
    }
    static py(value) {
        if (typeof value === 'number') value = value + 'px'
        return createElement({ style: { paddingTop: value, paddingBottom: value } }, this.name)
    }
    static grid(options) {
        return createElement({ style: { display: 'grid', ...options } }, this.name)
    }
    static flex(options) {
        return createElement({ style: { display: 'flex', ...options } }, this.name)
    }
    static radius(radius) {
        return createElement({ style: { borderRadius: radius } }, this.name)
    }
    static font(font) {
        return createElement({ style: { font } }, this.name)
    }
}

export const proxy = new Proxy(BaseElement, {
    get(target, property) {
        if (property in target) {
            // 如果调用的是静态方法则在结尾附上 __name 参数
            const __name = this.__name || ''
            if (typeof target[property] === 'function') {
                return function (...args) {
                    return target[property](...args, __name)
                }
            }
            return target[property]
        } else {
            const __name = this.__name ? this.__name + '.' + property : property
            console.log('__name:', __name)
            return new Proxy(target, { __name, get: this.get })
        }
    }
})

export class div extends proxy {
    constructor(options) {
        super(options)
    }
}

export class span extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class button extends BaseElement {
    constructor(options) {
        super({ ...options, style: { cursor: 'pointer', ...options.style } })
    }
}

export class img extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class pre extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class input extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class textarea extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class select extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class option extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class nav extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class main extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class article extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class section extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class aside extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class header extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class footer extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h1 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h2 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h3 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h4 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h5 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class h6 extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class p extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class a extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class ul extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class ol extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class li extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class dl extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class dt extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class dd extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class table extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class caption extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class thead extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class tbody extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class tfoot extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class tr extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class th extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class td extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class colgroup extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class col extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class form extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class fieldset extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class legend extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class label extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class strong extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class small extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class em extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class mark extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class del extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class ins extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class code extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class sub extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class sup extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class i extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class b extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class u extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class s extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class cite extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class q extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class blockquote extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class address extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class time extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class dfn extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class abbr extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class ruby extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class rt extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class rp extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class bdi extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class bdo extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class hr extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class br extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class figure extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class figcaption extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class video extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class audio extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export class canvas extends BaseElement {
    constructor(options) {
        super(options)
    }
}

export function Avatar(options) {
    const element = createElement(options, 'img')
    element.onerror = () => element.src = '/favicon.ico'
    return element
}

export function Dialog(options) {
    const element = createElement({
        tabIndex: 0,
        style: {
            position: 'fixed',
            top: 0,
            left: 0,
            zIndex: 1000,
            width: '100%',
            height: '100%',
            backdropFilter: 'blur(5px)',
            duration: '0.5s',
            transition: 'all 0.5s'
        },
        onclick: async event => {
            if (event.target !== event.currentTarget) return
            await event.target.animate([{ opacity: 1 }, { opacity: 0 }], { duration: 100 }).finished
            await event.target.remove()
        },
        onkeydown: async event => {
            if (event.key !== 'Escape') return
            await event.target.animate([{ opacity: 1 }, { opacity: 0 }], { duration: 100 }).finished
            await event.target.remove()
        },
        children: [
            createElement({
                ...options,
                style: {
                    position: 'fixed',
                    top: '50%',
                    left: '50%',
                    transform: 'translate(-50%, -50%)',
                    backgroundColor: '#fff',
                    borderRadius: '150px',
                    boxShadow: '0 0 1em #ccc',
                    overflow: 'hidden',
                    display: 'flex',
                    justifyContent: 'center',
                    ...options.style,
                }
            })
        ]
    })
    const observer = new MutationObserver(mutationsList => {
        for (const mutation of mutationsList) {
            if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
                element.focus()
                element.animate([{ opacity: 0 }, { opacity: 1 }], { duration: 100 }).finished
                return observer.disconnect()
            }
        }
    })
    observer.observe(document.body, { childList: true, subtree: true })
    return element
}