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var MIN_DISTANCE = 10;
/**
* 判断当前是否为H5、app-vue
*/
var IS_HTML5 = false
if (typeof window === 'object') IS_HTML5 = true
/**
* 监听页面内值的变化,主要用于动态开关swipe-action
* @param {Object} newValue
* @param {Object} oldValue
* @param {Object} ownerInstance
* @param {Object} instance
*/
function sizeReady(newValue, oldValue, ownerInstance, instance) {
var state = instance.getState()
var buttonPositions = JSON.parse(newValue)
if (!buttonPositions || !buttonPositions.data || buttonPositions.data.length === 0) return
state.leftWidth = buttonPositions.data[0].width
state.rightWidth = buttonPositions.data[1].width
state.threshold = instance.getDataset().threshold
if (buttonPositions.show && buttonPositions.show !== 'none') {
openState(buttonPositions.show, instance, ownerInstance)
return
}
if (state.left) {
openState('none', instance, ownerInstance)
}
resetTouchStatus(instance)
}
/**
* 开始触摸操作
* @param {Object} e
* @param {Object} ins
*/
function touchstart(e, ins) {
var instance = e.instance;
var disabled = instance.getDataset().disabled
var state = instance.getState();
// fix by mehaotian, TODO 兼容 app-vue 获取dataset为字符串 , h5 获取 为 undefined 的问题,待框架修复
disabled = (typeof(disabled) === 'string' ? JSON.parse(disabled) : disabled) || false;
if (disabled) return
// 开始触摸时移除动画类
instance.requestAnimationFrame(function() {
instance.removeClass('ani');
ins.callMethod('closeSwipe');
})
// 记录上次的位置
state.x = state.left || 0
// 计算滑动开始位置
stopTouchStart(e, ins)
}
/**
* 开始滑动操作
* @param {Object} e
* @param {Object} ownerInstance
*/
function touchmove(e, ownerInstance) {
var instance = e.instance;
var disabled = instance.getDataset().disabled
var state = instance.getState()
// fix by mehaotian, TODO 兼容 app-vue 获取dataset为字符串 , h5 获取 为 undefined 的问题,待框架修复
disabled = (typeof(disabled) === 'string' ? JSON.parse(disabled) : disabled) || false;
if (disabled) return
// 是否可以滑动页面
stopTouchMove(e);
if (state.direction !== 'horizontal') {
return;
}
if (e.preventDefault) {
// 阻止页面滚动
e.preventDefault()
}
move(state.x + state.deltaX, instance, ownerInstance)
}
/**
* 结束触摸操作
* @param {Object} e
* @param {Object} ownerInstance
*/
function touchend(e, ownerInstance) {
var instance = e.instance;
var disabled = instance.getDataset().disabled
var state = instance.getState()
// fix by mehaotian, TODO 兼容 app-vue 获取dataset为字符串 , h5 获取 为 undefined 的问题,待框架修复
disabled = (typeof(disabled) === 'string' ? JSON.parse(disabled) : disabled) || false;
if (disabled) return
// 滑动过程中触摸结束,通过阙值判断是开启还是关闭
// fixed by mehaotian 定时器解决点击按钮,touchend 触发比 click 事件时机早的问题 ,主要是 ios13
moveDirection(state.left, instance, ownerInstance)
}
/**
* 设置移动距离
* @param {Object} value
* @param {Object} instance
* @param {Object} ownerInstance
*/
function move(value, instance, ownerInstance) {
value = value || 0
var state = instance.getState()
var leftWidth = state.leftWidth
var rightWidth = state.rightWidth
// 获取可滑动范围
state.left = range(value, -rightWidth, leftWidth);
instance.requestAnimationFrame(function() {
instance.setStyle({
transform: 'translateX(' + state.left + 'px)',
'-webkit-transform': 'translateX(' + state.left + 'px)'
})
})
}
/**
* 获取范围
* @param {Object} num
* @param {Object} min
* @param {Object} max
*/
function range(num, min, max) {
return Math.min(Math.max(num, min), max);
}
/**
* 移动方向判断
* @param {Object} left
* @param {Object} value
* @param {Object} ownerInstance
* @param {Object} ins
*/
function moveDirection(left, ins, ownerInstance) {
var state = ins.getState()
var threshold = state.threshold
var position = state.position
var isopen = state.isopen || 'none'
var leftWidth = state.leftWidth
var rightWidth = state.rightWidth
if (state.deltaX === 0) {
openState('none', ins, ownerInstance)
return
}
if ((isopen === 'none' && rightWidth > 0 && -left > threshold) || (isopen !== 'none' && rightWidth > 0 &&
rightWidth +
left < threshold)) {
// right
openState('right', ins, ownerInstance)
} else if ((isopen === 'none' && leftWidth > 0 && left > threshold) || (isopen !== 'none' && leftWidth > 0 &&
leftWidth - left < threshold)) {
// left
openState('left', ins, ownerInstance)
} else {
// default
openState('none', ins, ownerInstance)
}
}
/**
*
* @param {Boolean} type
* @param {Object} ins
* @param {Object} ownerInstance
*/
function openState(type, ins, ownerInstance) {
var state = ins.getState()
var position = state.position
var leftWidth = state.leftWidth
var rightWidth = state.rightWidth
var left = ''
state.isopen = state.isopen ? state.isopen : 'none'
switch (type) {
case "left":
left = leftWidth
break
case "right":
left = -rightWidth
break
default:
left = 0
}
// && !state.throttle
if (state.isopen !== type) {
state.throttle = true
ownerInstance.callMethod('change', {
open: type
})
}
state.isopen = type
//
ins.requestAnimationFrame(function() {
ins.addClass('ani');
move(left, ins, ownerInstance)
})
// ,
}
function getDirection(x, y) {
if (x > y && x > MIN_DISTANCE) {
return 'horizontal';
}
if (y > x && y > MIN_DISTANCE) {
return 'vertical';
}
return '';
}
/**
* 重置滑动状态
* @param {Object} event
*/
function resetTouchStatus(instance) {
var state = instance.getState();
state.direction = '';
state.deltaX = 0;
state.deltaY = 0;
state.offsetX = 0;
state.offsetY = 0;
}
/**
* 设置滑动开始位置
* @param {Object} event
*/
function stopTouchStart(event) {
var instance = event.instance;
var state = instance.getState();
resetTouchStatus(instance);
var touch = event.touches[0];
if (IS_HTML5 && isPC()) {
touch = event;
}
state.startX = touch.clientX;
state.startY = touch.clientY;
}
/**
* 滑动中,是否禁止打开
* @param {Object} event
*/
function stopTouchMove(event) {
var instance = event.instance;
var state = instance.getState();
var touch = event.touches[0];
if (IS_HTML5 && isPC()) {
touch = event;
}
state.deltaX = touch.clientX - state.startX;
state.deltaY = touch.clientY - state.startY;
state.offsetY = Math.abs(state.deltaY);
state.offsetX = Math.abs(state.deltaX);
state.direction = state.direction || getDirection(state.offsetX, state.offsetY);
}
function isPC() {
var userAgentInfo = navigator.userAgent;
var Agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];
var flag = true;
for (var v = 0; v < Agents.length - 1; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) {
flag = false;
break;
}
}
return flag;
}
var movable = false
function mousedown(e, ins) {
if (!IS_HTML5) return
if (!isPC()) return
touchstart(e, ins)
movable = true
}
function mousemove(e, ins) {
if (!IS_HTML5) return
if (!isPC()) return
if (!movable) return
touchmove(e, ins)
}
function mouseup(e, ins) {
if (!IS_HTML5) return
if (!isPC()) return
touchend(e, ins)
movable = false
}
function mouseleave(e, ins) {
if (!IS_HTML5) return
if (!isPC()) return
movable = false
}
module.exports = {
sizeReady: sizeReady,
touchstart: touchstart,
touchmove: touchmove,
touchend: touchend,
mousedown: mousedown,
mousemove: mousemove,
mouseup: mouseup,
mouseleave: mouseleave
}