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270 lines
6.8 KiB
270 lines
6.8 KiB
const MIN_DISTANCE = 10; |
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export default { |
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showWatch(newVal, oldVal, ownerInstance, instance, self) { |
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var state = self.state |
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var $el = ownerInstance.$el || ownerInstance.$vm && ownerInstance.$vm.$el |
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if (!$el) return |
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this.getDom(instance, ownerInstance, self) |
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if (newVal && newVal !== 'none') { |
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this.openState(newVal, instance, ownerInstance, self) |
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return |
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} |
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if (state.left) { |
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this.openState('none', instance, ownerInstance, self) |
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} |
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this.resetTouchStatus(instance, self) |
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}, |
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/** |
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* 开始触摸操作 |
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* @param {Object} e |
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* @param {Object} ins |
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*/ |
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touchstart(e, ownerInstance, self) { |
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let instance = e.instance; |
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let disabled = instance.getDataset().disabled |
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let state = self.state; |
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this.getDom(instance, ownerInstance, self) |
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// 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 |
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disabled = this.getDisabledType(disabled) |
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if (disabled) return |
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// 开始触摸时移除动画类 |
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instance.requestAnimationFrame(function() { |
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instance.removeClass('ani'); |
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ownerInstance.callMethod('closeSwipe'); |
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}) |
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// 记录上次的位置 |
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state.x = state.left || 0 |
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// 计算滑动开始位置 |
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this.stopTouchStart(e, ownerInstance, self) |
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}, |
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/** |
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* 开始滑动操作 |
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* @param {Object} e |
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* @param {Object} ownerInstance |
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*/ |
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touchmove(e, ownerInstance, self) { |
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let instance = e.instance; |
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// 删除之后已经那不到实例了 |
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if (!instance) return; |
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let disabled = instance.getDataset().disabled |
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let state = self.state |
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// 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 |
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disabled = this.getDisabledType(disabled) |
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if (disabled) return |
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// 是否可以滑动页面 |
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this.stopTouchMove(e, self); |
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if (state.direction !== 'horizontal') { |
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return; |
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} |
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if (e.preventDefault) { |
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// 阻止页面滚动 |
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e.preventDefault() |
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} |
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let x = state.x + state.deltaX |
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this.move(x, instance, ownerInstance, self) |
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}, |
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/** |
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* 结束触摸操作 |
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* @param {Object} e |
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* @param {Object} ownerInstance |
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*/ |
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touchend(e, ownerInstance, self) { |
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let instance = e.instance; |
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let disabled = instance.getDataset().disabled |
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let state = self.state |
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// 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 |
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disabled = this.getDisabledType(disabled) |
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if (disabled) return |
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// 滑动过程中触摸结束,通过阙值判断是开启还是关闭 |
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// 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 |
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this.moveDirection(state.left, instance, ownerInstance, self) |
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}, |
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/** |
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* 设置移动距离 |
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* @param {Object} value |
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* @param {Object} instance |
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* @param {Object} ownerInstance |
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*/ |
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move(value, instance, ownerInstance, self) { |
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value = value || 0 |
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let state = self.state |
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let leftWidth = state.leftWidth |
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let rightWidth = state.rightWidth |
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// 获取可滑动范围 |
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state.left = this.range(value, -rightWidth, leftWidth); |
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instance.requestAnimationFrame(function() { |
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instance.setStyle({ |
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transform: 'translateX(' + state.left + 'px)', |
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'-webkit-transform': 'translateX(' + state.left + 'px)' |
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}) |
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}) |
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}, |
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/** |
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* 获取元素信息 |
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* @param {Object} instance |
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* @param {Object} ownerInstance |
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*/ |
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getDom(instance, ownerInstance, self) { |
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var state = self.state |
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var $el = ownerInstance.$el || ownerInstance.$vm && ownerInstance.$vm.$el |
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var leftDom = $el.querySelector('.button-group--left') |
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var rightDom = $el.querySelector('.button-group--right') |
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state.leftWidth = leftDom.offsetWidth || 0 |
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state.rightWidth = rightDom.offsetWidth || 0 |
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state.threshold = instance.getDataset().threshold |
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}, |
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getDisabledType(value) { |
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return (typeof(value) === 'string' ? JSON.parse(value) : value) || false; |
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}, |
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/** |
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* 获取范围 |
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* @param {Object} num |
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* @param {Object} min |
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* @param {Object} max |
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*/ |
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range(num, min, max) { |
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return Math.min(Math.max(num, min), max); |
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}, |
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/** |
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* 移动方向判断 |
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* @param {Object} left |
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* @param {Object} value |
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* @param {Object} ownerInstance |
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* @param {Object} ins |
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*/ |
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moveDirection(left, ins, ownerInstance, self) { |
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var state = self.state |
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var threshold = state.threshold |
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var position = state.position |
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var isopen = state.isopen || 'none' |
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var leftWidth = state.leftWidth |
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var rightWidth = state.rightWidth |
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if (state.deltaX === 0) { |
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this.openState('none', ins, ownerInstance, self) |
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return |
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} |
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if ((isopen === 'none' && rightWidth > 0 && -left > threshold) || (isopen !== 'none' && rightWidth > 0 && |
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rightWidth + |
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left < threshold)) { |
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// right |
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this.openState('right', ins, ownerInstance, self) |
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} else if ((isopen === 'none' && leftWidth > 0 && left > threshold) || (isopen !== 'none' && leftWidth > 0 && |
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leftWidth - left < threshold)) { |
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// left |
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this.openState('left', ins, ownerInstance, self) |
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} else { |
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// default |
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this.openState('none', ins, ownerInstance, self) |
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} |
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}, |
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/** |
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* 开启状态 |
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* @param {Boolean} type |
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* @param {Object} ins |
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* @param {Object} ownerInstance |
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*/ |
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openState(type, ins, ownerInstance, self) { |
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let state = self.state |
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let leftWidth = state.leftWidth |
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let rightWidth = state.rightWidth |
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let left = '' |
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state.isopen = state.isopen ? state.isopen : 'none' |
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switch (type) { |
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case "left": |
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left = leftWidth |
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break |
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case "right": |
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left = -rightWidth |
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break |
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default: |
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left = 0 |
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} |
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// && !state.throttle |
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if (state.isopen !== type) { |
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state.throttle = true |
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ownerInstance.callMethod('change', { |
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open: type |
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}) |
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} |
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state.isopen = type |
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// 添加动画类 |
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ins.requestAnimationFrame(() => { |
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ins.addClass('ani'); |
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this.move(left, ins, ownerInstance, self) |
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}) |
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}, |
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getDirection(x, y) { |
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if (x > y && x > MIN_DISTANCE) { |
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return 'horizontal'; |
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} |
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if (y > x && y > MIN_DISTANCE) { |
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return 'vertical'; |
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} |
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return ''; |
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}, |
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/** |
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* 重置滑动状态 |
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* @param {Object} event |
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*/ |
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resetTouchStatus(instance, self) { |
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let state = self.state; |
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state.direction = ''; |
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state.deltaX = 0; |
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state.deltaY = 0; |
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state.offsetX = 0; |
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state.offsetY = 0; |
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}, |
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/** |
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* 设置滑动开始位置 |
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* @param {Object} event |
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*/ |
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stopTouchStart(event, ownerInstance, self) { |
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let instance = event.instance; |
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let state = self.state |
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this.resetTouchStatus(instance, self); |
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var touch = event.touches[0]; |
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state.startX = touch.clientX; |
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state.startY = touch.clientY; |
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}, |
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/** |
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* 滑动中，是否禁止打开 |
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* @param {Object} event |
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*/ |
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stopTouchMove(event, self) { |
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let instance = event.instance; |
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let state = self.state; |
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let touch = event.touches[0]; |
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state.deltaX = touch.clientX - state.startX; |
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state.deltaY = touch.clientY - state.startY; |
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state.offsetY = Math.abs(state.deltaY); |
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state.offsetX = Math.abs(state.deltaX); |
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state.direction = state.direction || this.getDirection(state.offsetX, state.offsetY); |
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} |
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}
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