| 1 | {"version":3,"file":"selectorQuery.js","sources":["../../../src/api/wxml/selectorQuery.ts"],"sourcesContent":["import Taro from '@tarojs/api'\nimport { isFunction } from '@tarojs/shared'\n\nimport { findDOM } from '../../utils'\nimport { CanvasContext } from '../canvas/CanvasContext'\nimport { NodesRef } from './nodesRef'\n\ntype TElement = Document | HTMLElement | Element\n\ninterface ISelectorQueryQueue {\n component: TaroGeneral.IAnyObject\n selector: string\n single: boolean\n fields\n}\n\ntype TSelectorQueryQueueCallback = (res: ISelectorQueryQueue) => void\n\nfunction filter (fields, dom?: HTMLElement, selector?: string) {\n if (!dom) return null\n\n const isViewport = selector === '.taro_page'\n const { id, dataset, rect, size, scrollOffset, properties = [], computedStyle = [], nodeCanvasType, node, context } = fields\n const res: any = {}\n\n if (nodeCanvasType && node) {\n const tagName = dom.tagName\n res.node = {\n id: dom.id,\n $taroElement: dom\n }\n if (/^taro-canvas-core/i.test(tagName)) {\n const type = (dom as any).type! || ''\n res.nodeCanvasType = type\n const canvas = dom.getElementsByTagName('canvas')[0]\n if (/^(2d|webgl)/i.test(type) && canvas) {\n res.node = canvas\n } else {\n res.node = null\n }\n } else {\n // TODO https://developers.weixin.qq.com/miniprogram/dev/api/ui/scroll/ScrollViewContext.html\n // if (/^taro-scroll-view-core/i.test(tagName))\n res.nodeCanvasType = ''\n res.node = dom\n }\n return res\n }\n if (context) {\n const tagName = dom.tagName\n if (/^taro-video-core/i.test(tagName)) {\n // TODO HTMLVideoElement to VideoContext\n return { context: dom as unknown as Taro.VideoContext }\n } else if (/^taro-canvas-core/i.test(tagName)) {\n const type = (dom as any).type! || '2d'\n const canvas = dom?.querySelector('canvas') as HTMLCanvasElement\n const ctx = canvas?.getContext(type) as CanvasRenderingContext2D\n return { context: new CanvasContext(canvas, ctx) }\n } else if 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(properties.length) {\n properties.forEach(prop => {\n const attr = dom.getAttribute(prop)\n if (attr) res[prop] = attr\n })\n }\n if (computedStyle.length) {\n const styles = window.getComputedStyle(dom)\n computedStyle.forEach(key => {\n const value = styles.getPropertyValue(key) || styles[key]\n if (value) res[key] = value\n })\n }\n\n return res\n}\n\n/**\n * WXML节点信息API\n * @return {Object} SelectorQuery 对象实例\n */\nfunction queryBat (queue: ISelectorQueryQueue[], cb: (...args: any[]) => any): void {\n const result: any[] = []\n\n queue.forEach(item => {\n const { selector, single, fields, component } = item\n // selector 的容器节点\n /* eslint-disable */\n const container: TElement = (\n component !== null ?\n (findDOM(component) as HTMLElement || document) :\n document\n )\n /* eslint-enable */\n\n // 特殊处理 ---- 选自己\n let selectSelf = false\n if (container !== document) {\n const $nodeList = container.parentNode?.querySelectorAll(selector)\n if ($nodeList) {\n for (let i = 0, len = $nodeList.length; i < len; ++i) {\n if (container === $nodeList[i]) {\n selectSelf = true\n break\n }\n }\n }\n }\n\n if (single) {\n const el = selectSelf === true ? container : container.querySelector(selector)\n result.push(filter(fields, el as HTMLElement, selector))\n } else {\n const $children = container.querySelectorAll(selector)\n const children: TElement[] = []\n selectSelf === true && children.push(container)\n for (let i = 0, len = $children.length; i < len; ++i) {\n children.push($children[i])\n }\n result.push(children.map(dom => filter(fields, dom as HTMLElement)))\n }\n })\n cb(result)\n}\n\nexport class SelectorQuery implements Taro.SelectorQuery {\n _defaultWebviewId: string | null\n _webviewId: string | null\n _queue: ISelectorQueryQueue[]\n _queueCb: (TSelectorQueryQueueCallback | null)[]\n _component?: TaroGeneral.IAnyObject\n\n constructor () {\n this._defaultWebviewId = null\n this._webviewId = null\n this._queue = []\n this._queueCb = []\n this._component\n }\n\n in (component: TaroGeneral.IAnyObject) {\n this._component = component\n return this\n }\n\n select (selector: string) {\n // 小程序里跨自定义组件的后代选择器 '>>>' 在 h5 替换为普通后代选择器 '>'\n if (typeof selector === 'string') selector = selector.replace('>>>', '>')\n return new NodesRef(selector, this, true)\n }\n\n selectAll (selector: string) {\n // 小程序里跨自定义组件的后代选择器 '>>>' 在 h5 替换为普通后代选择器 '>'\n if (typeof selector === 'string') selector = selector.replace('>>>', '>')\n return new NodesRef(selector, this, false)\n }\n\n selectViewport () {\n return new NodesRef('.taro_page', this, true)\n }\n\n exec (cb) {\n queryBat(this._queue, res => {\n const _queueCb = this._queueCb\n res.forEach((item, index) => {\n const cb = _queueCb[index]\n isFunction(cb) && cb.call(this, item)\n })\n isFunction(cb) && cb.call(this, res)\n })\n return this as unknown as Taro.NodesRef\n }\n\n _push (selector: string, component, single, fields, callback: TSelectorQueryQueueCallback | null = null) {\n this._queue.push({\n component,\n selector,\n single,\n fields\n })\n this._queueCb.push(callback)\n 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