anchor

components/affix/demo/basic.md

@@ -14,7 +14,7 @@ title:
 The simplest usage.
 
 ````jsx
-import { Affix, Button } from 'antd';
+import { Anchor } from 'antd';
 
 ReactDOM.render(
   <div>

components/anchor/AnchorLink.tsx

@@ -0,0 +1,21 @@
+import React from 'react';
+
+
+export interface AnchorLinkProps {
+  href: string;
+  onClick: (href: string) => {};
+  active: boolean;
+}
+
+export default class AnchorLink extends React.Component<AnchorLinkProps, any> {
+  onClick = () => {
+    if (this.props.href) {
+      this.props.onClick(this.props.href);
+    }
+  }
+  render() {
+    return <div onClick={this.onClick}>
+      {this.props.active ? 'active':null } {this.props.children}
+    </div>;
+  }
+}

components/anchor/demo/basic.md

@@ -0,0 +1,27 @@
+---
+order: 0
+title:
+  zh-CN: 基本
+  en-US: Basic
+---
+
+## zh-CN
+
+最简单的用法。
+
+## en-US
+
+The simplest usage.
+
+```jsx
+
+const { Anchor } = antd;
+
+const { AnchorLink }  = Anchor;
+
+ReactDOM.render(
+  <Anchor>
+    <AnchorLink href="#components-anchor-demo-basic">锚点1</AnchorLink>
+  </Anchor>
+, mountNode);
+```

components/anchor/demo/independ.md

@@ -0,0 +1,24 @@
+---
+order: 1
+title:
+  zh-CN: 独立使用 AnchorLink
+  en-US: Independent AnchorLink
+---
+
+## zh-CN
+
+独立使用 AnchorLink
+
+## en-US
+
+Independent AnchorLink
+
+```jsx
+
+const { Anchor } = antd;
+const { AnchorLink }  = Anchor;
+
+ReactDOM.render(
+    <AnchorLink href="#components-anchor-demo-basic">锚点1</AnchorLink>
+, mountNode);
+```

components/anchor/index.en-US.md

@@ -0,0 +1,29 @@
+---
+category: Components
+type: Other
+title: Anchor
+---
+
+Make an element sticky to viewport.
+
+## When To Use
+
+When user browses a long web page, some content need to sticky to viewport. It is common for menus and actions.
+
+Please note that Affix should not cover other content in page, especially when the size of viewport is small.
+
+## API
+
+| Property     | Description           | Type     | Default      |
+|--------------|-----------------------|----------|--------------|
+| offsetTop    | Pixels to offset from top when calculating position of scroll | Number | 0 |
+| offsetBottom | Pixels to offset from bottom when calculating position of scroll | Number | - |
+| onChange     | Callback when affix state is changed | Function(affixed) | - |
+
+**Note:** Children of `Affix` can not be `position: absolute`, but you can set `Affix` as `position: absolute`:
+
+```jsx
+<Affix style={{ position: 'absolute', top: y, left: x}}>
+  ...
+</Affix>
+```

components/anchor/index.tsx

@@ -0,0 +1,128 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import addEventListener from 'rc-util/lib/Dom/addEventListener';
+import getScroll from '../_util/getScroll';
+import AnchorLink from './AnchorLink';
+import Affix from '../affix';
+import getRequestAnimationFrame from '../_util/getRequestAnimationFrame';
+
+const reqAnimFrame = getRequestAnimationFrame();
+
+const easeInOutCubic = (t, b, c, d) => {
+  t /= d/2;
+	if (t < 1) return c/2*t*t*t + b;
+	t -= 2;
+	return c/2*(t*t*t + 2) + b;
+};
+
+function getDefaultTarget() {
+  return typeof window !== 'undefined' ?
+    window : null;
+}
+
+function getOffsetTop(element): number {
+  if (!element) {
+    return 0;
+  }
+
+  if (!element.getClientRects().length) {
+    return 0;
+  }
+
+  const rect = element.getBoundingClientRect();
+
+  if ( rect.width || rect.height ) {
+    const doc = element.ownerDocument;
+    const docElem = doc.documentElement;
+    return  rect.top + window.pageYOffset - docElem.clientTop;
+  }
+
+  return rect.top;
+}
+
+export interface AnchorProps {
+  target: () => HTMLElement | Window;
+  children: React.ReactNode;
+} 
+
+
+export default class Anchor extends React.Component<AnchorProps, any> {
+  static AnchorLink = AnchorLink;
+
+  private scrollEvent: any;
+  private sections: Array<string> = [];
+
+  constructor(props) {
+    super(props);
+    this.state = {
+      activeAnchor: null,
+    };
+  }
+  handleScroll = () => {
+    const { target = getDefaultTarget } = this.props;
+    const scrollTop = getScroll(target(), true);
+    let activeAnchor;
+
+    this.sections.forEach(section => {
+      const target = document.querySelector(section);
+      if (target) {
+        const top = target.offsetTop;
+        const bottom = top + target.clientHeight;
+        if ((scrollTop >= top) && (scrollTop <= bottom)) {
+          activeAnchor = section;
+        }
+      }
+    });
+
+    if (activeAnchor) {
+      this.setState({
+        activeAnchor,
+      });
+    }
+  }
+
+  componentDidMount() {
+    this.handleScroll();
+    this.scrollEvent = addEventListener((this.props.target || getDefaultTarget)(), 'scroll', this.handleScroll);
+  }
+
+  componentWillUnmount() {
+    if (this.scrollEvent) {
+      this.scrollEvent.remove();
+    }
+  }
+
+  scrollTo = (href) => {
+    const { target = getDefaultTarget } = this.props;
+    const scrollTop = getScroll(target(), true);
+    const offsetTop = getOffsetTop(document.querySelector(href));
+    const startTime = Date.now();
+    const frameFunc = () => {
+      const timestamp = Date.now();
+      const time = timestamp - startTime;
+      document.body.scrollTop = easeInOutCubic(time, scrollTop, offsetTop, 450);
+      if (time < 450) {
+        reqAnimFrame(frameFunc);
+      }
+    };
+    reqAnimFrame(frameFunc);
+  }
+
+  renderAnchorLink = (child) => {
+    const { href } = child.props;
+    if (href) {
+      if (this.sections.indexOf(href) === -1) {
+        this.sections.push(href);
+      }
+      return React.cloneElement(child, { onClick: this.scrollTo, active: this.state.activeAnchor === href });
+    }
+    return child;
+  }
+
+  render() {
+    return <Affix>
+      <div>{React.Children.map(this.props.children, this.renderAnchorLink)}</div>
+    </Affix>;
+  }
+}
+

components/anchor/index.zh-CN.md

@@ -0,0 +1,31 @@
+---
+category: Components
+subtitle: 锚点
+type: Other
+title: Anchor
+---
+
+将页面元素钉在可视范围。
+
+## 何时使用
+
+当内容区域比较长，需要滚动页面时，这部分内容对应的操作或者导航需要在滚动范围内始终展现。常用于侧边菜单和按钮组合。
+
+页面可视范围过小时，慎用此功能以免遮挡页面内容。
+
+## API
+
+| 成员        | 说明           | 类型               | 默认值       |
+|-------------|----------------|--------------------|--------------|
+| offsetTop    | 距离窗口顶部达到指定偏移量后触发   | Number |         |
+| offsetBottom | 距离窗口底部达到指定偏移量后触发   | Number |         |
+| target | 设置 `Affix` 需要监听其滚动事件的元素，值为一个返回对应 DOM 元素的函数 | Function | () => window |
+| onChange | 固定状态改变时触发的回调函数   | Function(affixed) | 无        |
+
+**注意：**`Affix` 内的元素不要使用绝对定位，如需要绝对定位的效果，可以直接设置 `Affix` 为绝对定位：
+
+```jsx
+<Affix style={{ position: 'absolute', top: y, left: x}}>
+  ...
+</Affix>
+```

components/anchor/style/index.less

@@ -0,0 +1,5 @@
+@import "../../style/themes/default";
+
+.@{ant-prefix}-anchor {
+  color: red;
+}

components/anchor/style/index.tsx

@@ -0,0 +1,2 @@
+import '../../style/index.less';
+import './index.less';

components/anchor/style/index.zh-CN.md

@@ -0,0 +1,31 @@
+---
+category: Components
+subtitle: 固钉
+type: Other
+title: Affix
+---
+
+将页面元素钉在可视范围。
+
+## 何时使用
+
+当内容区域比较长，需要滚动页面时，这部分内容对应的操作或者导航需要在滚动范围内始终展现。常用于侧边菜单和按钮组合。
+
+页面可视范围过小时，慎用此功能以免遮挡页面内容。
+
+## API
+
+| 成员        | 说明           | 类型               | 默认值       |
+|-------------|----------------|--------------------|--------------|
+| offsetTop    | 距离窗口顶部达到指定偏移量后触发   | Number |         |
+| offsetBottom | 距离窗口底部达到指定偏移量后触发   | Number |         |
+| target | 设置 `Affix` 需要监听其滚动事件的元素，值为一个返回对应 DOM 元素的函数 | Function | () => window |
+| onChange | 固定状态改变时触发的回调函数   | Function(affixed) | 无        |
+
+**注意：**`Affix` 内的元素不要使用绝对定位，如需要绝对定位的效果，可以直接设置 `Affix` 为绝对定位：
+
+```jsx
+<Affix style={{ position: 'absolute', top: y, left: x}}>
+  ...
+</Affix>
+```

components/index.tsx

@@ -9,6 +9,8 @@ please use https://www.npmjs.com/package/babel-plugin-import to reduce app bundl
 
 export { default as Affix } from './affix';
 
+export { default as Anchor } from './anchor';
+
 export { default as AutoComplete } from './auto-complete';
 
 export { default as Alert } from './alert';
@@ -101,4 +103,4 @@ export { default as Tooltip } from './tooltip';
 
 export { default as Mention } from './mention';
 
-export { default as Upload } from './upload';
+export { default as Upload } from './upload';