完成拖拽插件的重构
宇天
parent
4a4d2f1c36
commit
6aa402b957
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@ -19,7 +19,7 @@
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- [x] 徽标组件(`wc-badge`)
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- [x] codemirror插件(第三方插件,整合适配)
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- [ ] 倒计时组件(`wc-counter`)
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- [ ] 拖拽指令插件(`:drag`) 待重构...
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- [x] 拖拽指令插件(`:drag`)
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- [x] 表单组件-按钮(`wc-button`)
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- [x] 表单组件-复选框(`wc-checkbox`)
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- [x] 表单组件-文本输入框(`wc-input`)
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@ -1,15 +1,13 @@
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/**
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* 拖拽插件
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* 拖拽插件的核心部分
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* @author yutent<yutent@doui.cc>
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* @date 2019/08/21 17:28:40
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* @date 2019/08/23 19:41:21
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*/
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'use strict'
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import { bind, unbind } from '../utils'
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const log = console.log
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const DEF_OPT = {
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axis: '', // x | y | xy 拖拽方向
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limit: false, // false | window | parent 拖拽范围
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@ -1,5 +1,5 @@
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/**
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*
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* 拖拽指令 :drag
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* @authors yutent (yutent@doui.cc)
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* @date 2017-03-29 18:39:35
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*
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@ -7,49 +7,12 @@
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'use strict'
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function getBindingCallback(elem, name, vmodels) {
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var callback = elem.getAttribute(name)
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if (callback) {
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for (var i = 0, vm; (vm = vmodels[i++]); ) {
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if (vm.hasOwnProperty(callback) && typeof vm[callback] === 'function') {
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return vm[callback]
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}
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}
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}
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}
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Anot.ui.drag = '1.0.0'
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// 元素拖动
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import Drag from './core'
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Anot.directive('drag', {
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priority: 1500,
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init: function(binding) {
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binding.expr = '"' + binding.expr + '"'
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let ico = document.documentMode ? 'move' : 'grab'
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if (window.sidebar) {
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ico = '-moz-' + ico
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} else if (window.chrome) {
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ico = '-webkit-' + ico
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}
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Anot(binding.element).css('cursor', ico)
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//取得拖动的3种状态回调
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//按下,且拖拽之前
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binding.beforedrag = getBindingCallback(
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binding.element,
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'data-beforedrag',
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binding.vmodels
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)
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//拖拽过程
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binding.dragging = getBindingCallback(
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binding.element,
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'data-dragging',
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binding.vmodels
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)
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// 拖拽结束,且释放鼠标
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binding.dragged = getBindingCallback(
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binding.element,
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'data-dragged',
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binding.vmodels
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)
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//默认允许溢出可视区
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binding.overflow = true
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@ -69,174 +32,30 @@ Anot.directive('drag', {
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binding.overflow = false
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delete binding.element.dataset.limit
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}
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delete binding.element.dataset.beforedrag
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delete binding.element.dataset.dragging
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delete binding.element.dataset.dragged
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},
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update: function(val) {
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let _this = this
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let target = val ? this.element.parentNode : this.element
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let $drag = Anot(this.element)
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let $doc = Anot(document)
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let $target = null
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let parentElem = null
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var target = this.element
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// val值不为空时, 获取真正的拖动元素
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// 仅从父级上找
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while (val && target) {
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if (!target.classList) {
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Anot.error(`${this.name}=${this.expr}, 解析异常[元素不存在]`)
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}
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if (target.classList.contains(val) || target.id === val) {
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break
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} else {
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target = target.parentNode
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if (val) {
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target = this.element.parentNode
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while (target) {
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if (!target.classList) {
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Anot.error(`${this.name}=${this.expr}, 解析异常[元素不存在]`)
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}
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if (target.classList.contains(val) || target.id === val) {
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break
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} else {
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target = target.parentNode
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}
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}
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}
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$target = Anot(target)
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// 限制范围为parent时,获取父级元素
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if (this.limit === 'parent') {
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parentElem = target.parentNode
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}
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let dx, dy, mx, my, ox, oy, fox, foy, tw, th, ww, wh, bst, bsl
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let cssTransition
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$drag.bind('mousedown', function(ev) {
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let gcs = getComputedStyle(target)
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let cst = gcs.transform.replace(/matrix\((.*)\)/, '$1')
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let offset = $target.offset()
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if (gcs.transitionDuration !== '0s') {
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cssTransition = gcs.transitionDuration
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target.style.transitionDuration = '0s'
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}
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cst = cst !== 'none' ? cst.split(', ') : [1, 0, 0, 1, 0, 0]
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cst[4] -= 0
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cst[5] -= 0
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//记录初始的transform位移
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dx = cst[4]
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dy = cst[5]
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//滚动条的偏移
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bst = $doc.scrollTop()
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bsl = $doc.scrollLeft()
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// 计算元素的offset值, 需要修正
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ox = offset.left - dx - bsl
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oy = offset.top - dy - bst
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mx = ev.pageX //按下鼠标的的坐标值
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my = ev.pageY //按下鼠标的的坐标值
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// 在按下时才获取窗口大小, 是为了防止人为的改变窗口大小,导致计算不准备
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// 同时减少不必要的事件监听(页面上可能会很多可拖动元素)
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ww = window.innerWidth
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wh = window.innerHeight
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// 同样,在点击之后获取元素的宽高,可保证获取到的是真实的值
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tw = target.clientWidth
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th = target.clientHeight
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//拖拽前回调
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if (_this.beforedrag) {
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let result = _this.beforedrag.call(
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_this.vmodels[0],
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target,
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ox + dx,
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oy + dy
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)
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if (result === false) {
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return
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}
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}
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//限制区域, 4个值依次是: 上, 下, 左, 右
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let limit = [0, wh - th, 0, ww - tw]
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if (_this.limit === 'parent') {
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let pgcs = getComputedStyle(parentElem)
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let pcst = pgcs.transform.replace(/matrix\((.*)\)/, '$1')
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let poffset = Anot(parentElem).offset()
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pcst = pcst !== 'none' ? pcst.split(', ') : [1, 0, 0, 1, 0, 0]
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let pox = poffset.left - pcst[4] - bsl
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let poy = poffset.top - pcst[5] - bst
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limit = [
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poy,
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poy + parentElem.clientHeight - th,
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pox,
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pox + parentElem.clientWidth - tw
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]
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}
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let mvfn = $doc.bind('mousemove', function(ev) {
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// 防止拖动到边缘时导致页面滚动
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ev.preventDefault()
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//坐标轴限制
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if (_this.axis !== 'y') {
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cst[4] = ev.pageX - mx + dx
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}
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if (_this.axis !== 'x') {
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cst[5] = ev.pageY - my + dy
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}
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fox = ox + cst[4] //修正的offset
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foy = oy + cst[5] //修正的offset
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//如果不允许溢出可视区
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if (!_this.overflow) {
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if (_this.axis !== 'y') {
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if (fox <= limit[2]) {
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fox = limit[2]
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//修正矩阵
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cst[4] = fox - ox
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}
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if (fox >= limit[3]) {
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fox = limit[3]
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//修正矩阵
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cst[4] = fox - ox
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}
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}
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if (_this.axis !== 'x') {
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if (foy <= limit[0]) {
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foy = limit[0]
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//修正矩阵
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cst[5] = foy - oy
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}
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if (foy >= limit[1]) {
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foy = limit[1]
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//修正矩阵
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cst[5] = foy - oy
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}
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}
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}
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$target.css({
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transform: 'matrix(' + cst.join(', ') + ')'
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})
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//拖拽过程的回调
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if (_this.dragging) {
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_this.dragging.call(_this.vmodels[0], target, fox, foy)
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}
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})
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let upfn = $doc.bind('mouseup', function(ev) {
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$doc.unbind('mousemove', mvfn)
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$doc.unbind('mouseup', upfn)
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target.style.transitionDuration = cssTransition
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//结束回调
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if (_this.dragged) {
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_this.dragged.call(_this.vmodels[0], target, fox, foy, cst[4], cst[5])
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}
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})
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new Drag(target).by(this.element, {
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limit: this.limit,
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axis: this.axis,
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overflow: this.overflow
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})
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}
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})
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