226 lines
		
	
	
		
			7.9 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
			
		
		
	
	
			226 lines
		
	
	
		
			7.9 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
/**
 | 
						||
 * 此为wxs模块,只支持APP-VUE,微信和QQ小程序以及H5平台
 | 
						||
 * wxs内部不支持es6语法,变量只能使用var定义,无法使用解构,箭头函数等特性
 | 
						||
 */
 | 
						||
 | 
						||
// 开始触摸
 | 
						||
function touchstart(event, ownerInstance) {
 | 
						||
	// 触发事件的组件的ComponentDescriptor实例
 | 
						||
	var instance = event.instance
 | 
						||
	// wxs内的局部变量快照,此快照是属于整个组件的,在touchstart和touchmove事件中都能获取到相同的结果
 | 
						||
	var state = instance.getState()
 | 
						||
	if (state.disabled) return
 | 
						||
	var touches = event.touches
 | 
						||
	// 如果进行的是多指触控,不允许进行操作
 | 
						||
	if (touches && touches.length > 1) return
 | 
						||
	// 标识当前为滑动中状态
 | 
						||
	state.moving = true
 | 
						||
	// 记录触摸开始点的坐标值
 | 
						||
	state.startX = touches[0].pageX
 | 
						||
	state.startY = touches[0].pageY
 | 
						||
	
 | 
						||
	ownerInstance.callMethod('closeOther')
 | 
						||
}
 | 
						||
 | 
						||
// 触摸滑动
 | 
						||
function touchmove(event, ownerInstance) {
 | 
						||
	// 触发事件的组件的ComponentDescriptor实例
 | 
						||
	var instance = event.instance
 | 
						||
	// wxs内的局部变量快照
 | 
						||
	var state = instance.getState()
 | 
						||
	if (state.disabled || !state.moving) return
 | 
						||
	var touches = event.touches
 | 
						||
	var pageX = touches[0].pageX
 | 
						||
	var pageY = touches[0].pageY
 | 
						||
	var moveX = pageX - state.startX
 | 
						||
	var moveY = pageY - state.startY
 | 
						||
	var buttonsWidth = state.buttonsWidth
 | 
						||
 | 
						||
	// 移动的X轴距离大于Y轴距离,也即终点与起点位置连线,与X轴夹角小于45度时,禁止页面滚动
 | 
						||
	if (Math.abs(moveX) > Math.abs(moveY) || Math.abs(moveX) > state.threshold) {
 | 
						||
		event.preventDefault && event.preventDefault()
 | 
						||
		event.stopPropagation && event.stopPropagation()
 | 
						||
	}
 | 
						||
	// 如果移动的X轴距离小于Y轴距离,也即终点位置与起点位置连线,与Y轴夹角小于45度时,认为是页面上下滑动,而不是左右滑动单元格
 | 
						||
	if (Math.abs(moveX) < Math.abs(moveY)) return
 | 
						||
 | 
						||
	// 限制右滑的距离,不允许内容部分往右偏移,右滑会导致X轴偏移值大于0,以此做判断
 | 
						||
	// 此处不能直接return,因为滑动过程中会缺失某些关键点坐标,会导致错乱,最好的办法就是
 | 
						||
	// 在超出后,设置为0
 | 
						||
	if (state.status === 'open') {
 | 
						||
		// 在开启状态下,向左滑动,需忽略
 | 
						||
		if (moveX < 0) moveX = 0
 | 
						||
		// 想要收起菜单,最大能移动的距离为按钮的总宽度
 | 
						||
		if (moveX > buttonsWidth) moveX = buttonsWidth
 | 
						||
		// 如果是已经打开了的状态,向左滑动时,移动收起菜单
 | 
						||
		moveSwipeAction(-buttonsWidth + moveX, instance, ownerInstance)
 | 
						||
	} else {
 | 
						||
		// 关闭状态下,右滑动需忽略
 | 
						||
		if (moveX > 0) moveX = 0
 | 
						||
		// 滑动的距离不允许超过所有按钮的总宽度,此时只能是左滑,最终设置按钮的总宽度,同时为负数
 | 
						||
		if (Math.abs(moveX) > buttonsWidth) moveX = -buttonsWidth
 | 
						||
		// 只要是在滑过程中,就不断移动单元格内容部分,从而使隐藏的菜单显示出来
 | 
						||
		moveSwipeAction(moveX, instance, ownerInstance)
 | 
						||
	}
 | 
						||
}
 | 
						||
 | 
						||
// 触摸结束
 | 
						||
function touchend(event, ownerInstance) {
 | 
						||
	// 触发事件的组件的ComponentDescriptor实例
 | 
						||
	var instance = event.instance
 | 
						||
	// wxs内的局部变量快照
 | 
						||
	var state = instance.getState()
 | 
						||
	if (!state.moving || state.disabled) return
 | 
						||
	var touches = event.changedTouches ? event.changedTouches[0] : {}
 | 
						||
	var pageX = touches.pageX
 | 
						||
	var pageY = touches.pageY
 | 
						||
	var moveX = pageX - state.startX
 | 
						||
	if (state.status === 'open') {
 | 
						||
		// 在展开的状态下,继续左滑,无需操作
 | 
						||
		if (moveX < 0) return
 | 
						||
		// 在开启状态下,点击一下内容区域,moveX为0,也即没有进行移动,这时执行收起菜单逻辑
 | 
						||
		if (moveX === 0) {
 | 
						||
			return closeSwipeAction(instance, ownerInstance)
 | 
						||
		}
 | 
						||
		// 在开启状态下,滑动距离小于阈值,则默认为不关闭,同时恢复原来的打开状态
 | 
						||
		if (Math.abs(moveX) < state.threshold) {
 | 
						||
			openSwipeAction(instance, ownerInstance)
 | 
						||
		} else {
 | 
						||
			// 如果滑动距离大于阈值,则执行收起逻辑
 | 
						||
			closeSwipeAction(instance, ownerInstance)
 | 
						||
		}
 | 
						||
	} else {
 | 
						||
		// 在关闭的状态下,右滑,无需操作
 | 
						||
		if (moveX > 0) return
 | 
						||
		// 理由同上
 | 
						||
		if (Math.abs(moveX) < state.threshold) {
 | 
						||
			closeSwipeAction(instance, ownerInstance)
 | 
						||
		} else {
 | 
						||
			openSwipeAction(instance, ownerInstance)
 | 
						||
		}
 | 
						||
	}
 | 
						||
}
 | 
						||
 | 
						||
// 获取过渡时间
 | 
						||
function getDuration(value) {
 | 
						||
	if (value.toString().indexOf('s') >= 0) return value
 | 
						||
	return value > 30 ? value + 'ms' : value + 's'
 | 
						||
}
 | 
						||
 | 
						||
// 滑动结束时判断滑动的方向
 | 
						||
function getMoveDirection(instance, ownerInstance) {
 | 
						||
	var state = instance.getState()
 | 
						||
}
 | 
						||
 | 
						||
// 移动滑动选择器内容区域,同时显示出其隐藏的菜单
 | 
						||
function moveSwipeAction(moveX, instance, ownerInstance) {
 | 
						||
	var state = instance.getState()
 | 
						||
	// 获取所有按钮的实例,需要通过它去设置按钮的位移
 | 
						||
	var buttons = ownerInstance.selectAllComponents('.u-swipe-action-item__right__button')
 | 
						||
 | 
						||
	// 设置菜单内容部分的偏移
 | 
						||
	instance.requestAnimationFrame(function() {
 | 
						||
		instance.setStyle({
 | 
						||
			// 设置translateX的值
 | 
						||
			'transition': 'none',
 | 
						||
			transform: 'translateX(' + moveX + 'px)',
 | 
						||
			'-webkit-transform': 'translateX(' + moveX + 'px)'
 | 
						||
		})
 | 
						||
	})
 | 
						||
}
 | 
						||
 | 
						||
// 一次性展开滑动菜单
 | 
						||
function openSwipeAction(instance, ownerInstance) {
 | 
						||
	var state = instance.getState()
 | 
						||
	// 获取所有按钮的实例,需要通过它去设置按钮的位移
 | 
						||
	var buttons = ownerInstance.selectAllComponents('.u-swipe-action-item__right__button')
 | 
						||
	// 处理duration单位问题
 | 
						||
	var duration = getDuration(state.duration)
 | 
						||
	// 展开过程中,是向左移动,所以X的偏移应该为负值
 | 
						||
	var buttonsWidth = -state.buttonsWidth
 | 
						||
	instance.requestAnimationFrame(function() {
 | 
						||
		// 设置菜单主体内容
 | 
						||
		instance.setStyle({
 | 
						||
			'transition': 'transform ' + duration,
 | 
						||
			'transform': 'translateX(' + buttonsWidth + 'px)',
 | 
						||
			'-webkit-transform': 'translateX(' + buttonsWidth + 'px)',
 | 
						||
		})
 | 
						||
	})
 | 
						||
	setStatus('open', instance, ownerInstance)
 | 
						||
}
 | 
						||
 | 
						||
// 标记菜单的当前状态,open-已经打开,close-已经关闭
 | 
						||
function setStatus(status, instance, ownerInstance) {
 | 
						||
	var state = instance.getState()
 | 
						||
	state.status = status
 | 
						||
	ownerInstance.callMethod('setState', status)
 | 
						||
}
 | 
						||
 | 
						||
// 一次性收起滑动菜单
 | 
						||
function closeSwipeAction(instance, ownerInstance) {
 | 
						||
	var state = instance.getState()
 | 
						||
	// 获取所有按钮的实例,需要通过它去设置按钮的位移
 | 
						||
	var buttons = ownerInstance.selectAllComponents('.u-swipe-action-item__right__button')
 | 
						||
	var len = buttons.length
 | 
						||
	// 处理duration单位问题
 | 
						||
	var duration = getDuration(state.duration)
 | 
						||
	instance.requestAnimationFrame(function() {
 | 
						||
		// 设置菜单主体内容
 | 
						||
		instance.setStyle({
 | 
						||
			'transition': 'transform ' + duration,
 | 
						||
			'transform': 'translateX(0px)',
 | 
						||
			'-webkit-transform': 'translateX(0px)'
 | 
						||
		})
 | 
						||
		// 设置各个隐藏的按钮为收起的状态
 | 
						||
		for (var i = len - 1; i >= 0; i--) {
 | 
						||
			buttons[i].setStyle({
 | 
						||
				'transition': 'transform ' + duration,
 | 
						||
				'transform': 'translateX(0px)',
 | 
						||
				'-webkit-transform': 'translateX(0px)'
 | 
						||
			})
 | 
						||
		}
 | 
						||
	})
 | 
						||
	setStatus('close', instance, ownerInstance)
 | 
						||
}
 | 
						||
 | 
						||
// status的状态发生变化
 | 
						||
function statusChange(newValue, oldValue, ownerInstance, instance) {
 | 
						||
	var state = instance.getState()
 | 
						||
	if (state.disabled) return
 | 
						||
	// 打开或关闭单元格
 | 
						||
	if (newValue === 'close' && state.status === 'open') {
 | 
						||
		closeSwipeAction(instance, ownerInstance)
 | 
						||
	} else if(newValue === 'open' && state.status === 'close') {
 | 
						||
		openSwipeAction(instance, ownerInstance)
 | 
						||
	}
 | 
						||
}
 | 
						||
 | 
						||
// 菜单尺寸发生变化
 | 
						||
function sizeChange(newValue, oldValue, ownerInstance, instance) {
 | 
						||
	// wxs内的局部变量快照
 | 
						||
	var state = instance.getState()
 | 
						||
	state.disabled = newValue.disabled
 | 
						||
	state.duration = newValue.duration
 | 
						||
	state.show = newValue.show
 | 
						||
	state.threshold = newValue.threshold
 | 
						||
	state.buttons = newValue.buttons
 | 
						||
 | 
						||
	if (state.buttons) {
 | 
						||
		var len = state.buttons.length
 | 
						||
		var buttonsWidth = 0
 | 
						||
		var buttons = newValue.buttons
 | 
						||
		for (var i = 0; i < len; i++) {
 | 
						||
			buttonsWidth += buttons[i].width
 | 
						||
		}
 | 
						||
	}
 | 
						||
	state.buttonsWidth = buttonsWidth
 | 
						||
}
 | 
						||
 | 
						||
module.exports = {
 | 
						||
	touchstart: touchstart,
 | 
						||
	touchmove: touchmove,
 | 
						||
	touchend: touchend,
 | 
						||
	sizeChange: sizeChange,
 | 
						||
	statusChange: statusChange
 | 
						||
}
 |