{"id":19505983,"url":"https://github.com/morlay/react-amap","last_synced_at":"2025-04-26T02:32:15.724Z","repository":{"id":69524158,"uuid":"66069841","full_name":"morlay/react-amap","owner":"morlay","description":null,"archived":false,"fork":false,"pushed_at":"2016-08-29T14:52:52.000Z","size":64,"stargazers_count":9,"open_issues_count":0,"forks_count":0,"subscribers_count":4,"default_branch":"master","last_synced_at":"2025-04-04T06:11:10.245Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"http://morlay.github.io/react-amap","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/morlay.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2016-08-19T09:16:53.000Z","updated_at":"2020-07-17T01:31:56.000Z","dependencies_parsed_at":"2023-04-21T15:17:11.245Z","dependency_job_id":null,"html_url":"https://github.com/morlay/react-amap","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/morlay%2Freact-amap","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/morlay%2Freact-amap/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/morlay%2Freact-amap/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/morlay%2Freact-amap/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/morlay","download_url":"https://codeload.github.com/morlay/react-amap/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":250922127,"owners_count":21508279,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-11-10T22:35:15.964Z","updated_at":"2025-04-26T02:32:15.718Z","avatar_url":"https://github.com/morlay.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"## React AMap integration\n\n\n```\nAMapLoader\n    |    \n    | context.AMap // AMap SDK\n    |\n    AMapProvider\n         |\n         | context.$map // dom container of map instance\n         | context.map // map instance of AMap\n         |\n         MapView // contains $map\n         withZoomInOut(ZoomInOutControls)\n    AMapProvider     \n    AMapProvider\n    ...\n```\n\n这不是一个完整的库, 而只是一个 React 集成较大型三方类库的的思路。\n\n较大型三方类库的特点:\n\n* 需加载 MapSDK.js 全局注册。\n* 提供完整的 APIs 以操作自身对应元素。\n* 一般伴有事件的注册与销毁机制, 方便状态的同步。\n\nMap 便是其中较符合的一个例子。\n\n在实际使用中, Map 往往会作为一个子应用, 存在大型系统中。\n除了该子应用, 其他子应用中不应该去加载其所依赖的 MapSDK.js, 按需加载是一个很必要的需求。\n同时被全局注册的 Map 类与方法, 不宜被直接调用(会增加测试的难度)。\n\nReact 提供了统一的 lifecycle, 在集成 Map 的时候, 可以加以利用。\n同样, React.Context 也可以方便 Map 的使用。\n\n### MapSDK 的准备 —— AMapLoader\n\n其一是 MapSDK 的按需加载, 这点很容易想到利用 [script.js](https://github.com/ded/script.js/) \n一类的 JavaScript Loader 方案实现。\n\n`componentDidMount` 中加载 MapSDK, 首次 render 的时候返回 `null` 或者别的 loading placeholder, \n加载完成后, `setState` re-render AMapLoader, 同时 AMapLoader 的 children 在此时才随之 mount。\n以此, 确保子 Component 中的 MapSDK 的调用是存在的。\n\n当然, 子 Component 中调用 MapSDK 可以从使用 `global.AMap`, 但这不利于测试, 也会对后期维护带来困扰。\n将整个 AMap 对象放到 React.Context 会是个不错的选择 (参考 `react-router` 和 `redux` 的做法), \n且对于复杂 Map 应用, children 会是较复杂的结构, 因此不通过 `props` 传递, \n只是在需要使用 MapSDK 的组件处, 用 `withAMap`, 将 `AMap` 的引入 从 `context` 换至 `props`; \n\n### Map instance 和 composers\n\n```\n|----------------------------|\n|           |                |\n|  MapView  |  LocationList  |\n|           |                |\n|----------------------------|\n```\n\n应用场景的不同, Map 在子应用的位置也会是不同的, 使用到的功能也是组合多样。\n过重的封装, 是没有必要的, 但依然可以有抽离公用部分的地方。\n \n比如这里 AMapProvider 将创建 map instance 供 AMapProvider 的 children 访问, \n当然也是通过 React.Context。\n这样做, 可以将 map instance 限定到较小的 scope 中, 同时利用 React 的 Component 模式隔离一些逻辑。\n\n同时, 在 map 的控制逻辑中, 可以使用 High-order Component 将 map 的部分状态, 及其操作方法组合起来,\n并确保 map instance 的对应状态的同步。\n这样我们可以将 UI 独立, 随意变换, 而交互逻辑作为公用的 composer, 被复用。\n\n如下:\n\n```js\nimport React from 'react';\nimport classNames from 'classnames';\n\nimport {\n  withZoomInOut,\n} from 'react-amap';\n\nimport MapToolbar_ from './MapToolbar_.styl';\n\nconst MapToolbar = withZoomInOut(({\n  className,\n  \n  zoom,\n  maxZoom,\n  minZoom,\n  zoomIn,\n  zoomOut,\n}) =\u003e (\n  \u003cdiv className={classNames(className)}\u003e\n    \u003cdiv className={MapToolbar_.Panel}\u003e\n      \u003cbutton\n        className={MapToolbar_.Button}\n        onClick={zoomIn}\n        disabled={zoom === maxZoom}\n      \u003e\n        +\n      \u003c/button\u003e\n      \u003cbutton\n        className={MapToolbar_.Button}\n        onClick={zoomOut}\n        disabled={zoom === minZoom}\n      \u003e\n        \u0026minus;\n      \u003c/button\u003e\n    \u003c/div\u003e\n  \u003c/div\u003e\n));\n\nexport default MapToolbar;\n```\n\n更多细节参考源代码。","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmorlay%2Freact-amap","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmorlay%2Freact-amap","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmorlay%2Freact-amap/lists"}