react-float-anchor - npm Package Compare versions

Comparing version 3.2.0 to 3.3.0

CHANGELOG.md

@@ -0,1 +1,5 @@
+## 3.3.0 (2019-10-22)
+
+* The choice return value from contain-by-screen is now available if you pass a callback as the `float` prop.
+
 ## 3.2.0 (2019-10-15)
@@ -2,0 +6,0 @@

index.d.ts

 import * as React from 'react';
 
-import {Options} from 'contain-by-screen';
+import {Options, Choice} from 'contain-by-screen';
 
-export {Options} from 'contain-by-screen';
+export {Options, Choice} from 'contain-by-screen';
 
 export type Props = {
   anchor: (anchorRef: React.Ref<any>) => React.ReactNode;
-  float?: React.ReactNode | null | undefined;
+  float?: React.ReactNode | ((choice: Choice | null) => React.ReactNode) | null | undefined;
   options?: Options | null | undefined;
@@ -11,0 +11,0 @@ zIndex?: number | string | null | undefined;

js/index.js

@@ -69,2 +69,6 @@ "use strict";
     _this = (0, _possibleConstructorReturn2["default"])(this, (_getPrototypeOf2 = (0, _getPrototypeOf3["default"])(FloatAnchor)).call.apply(_getPrototypeOf2, [this].concat(args)));
+    (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "state", {
+      choice: null,
+      floatNode: null
+    });
     (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "_portalEl", void 0);
@@ -162,3 +166,3 @@ (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "_portalRemoval", (0, _kefirBus["default"])());
 
-      if (this.props["float"] != null) {
+      if (this.state.floatNode != null) {
         // We need to reposition after the page has had its layout done.
@@ -169,8 +173,20 @@ this.repositionAsync();
   }, {
+    key: "shouldComponentUpdate",
+    value: function shouldComponentUpdate(nextProps, nextState) {
+      // If the only thing changed is state.choice *and* typeof props.float !== 'function', don't re-render.
+      // If nothing has changed, allow the re-render so we keep the same behavior on a plain forceUpdate of a parent.
+      // TODO in next major version, don't re-render when nothing has changed.
+      if (typeof nextProps["float"] !== 'function' && this.state.choice !== nextState.choice && this.props.anchor === nextProps.anchor && this.props.parentElement === nextProps.parentElement && this.props["float"] === nextProps["float"] && this.props.options === nextProps.options && this.props.zIndex === nextProps.zIndex && this.props.floatContainerClassName === nextProps.floatContainerClassName) {
+        return false;
+      }
+
+      return true;
+    }
+  }, {
     key: "componentDidUpdate",
-    value: function componentDidUpdate(prevProps) {
+    value: function componentDidUpdate(prevProps, prevState) {
       var portalEl = this._portalEl;
 
       if (portalEl) {
-        if (this.props["float"] == null) {
+        if (this.state.floatNode == null) {
           this._portalRemoval.value(null);
@@ -190,5 +206,6 @@ } else {
             portalEl.style.zIndex = String(this.props.zIndex);
-          }
+          } // If this re-render happened because of a change in position choice, don't reposition again now.
 
-          if (prevProps["float"] !== this.props["float"] || !(0, _isEqual["default"])(prevProps.options, this.props.options)) {
+
+          if (prevState.floatNode !== this.state.floatNode && prevState.choice === this.state.choice || !(0, _isEqual["default"])(prevProps.options, this.props.options)) {
             this.repositionAsync();
@@ -198,3 +215,3 @@ }
       } else {
-        if (this.props["float"] != null) {
+        if (this.state.floatNode != null) {
           throw new Error('Should not happen: portalEl was null after rendering with float prop');
@@ -261,4 +278,11 @@ }
       if (portalEl && portalEl.parentElement && anchorRef) {
-        (0, _containByScreen["default"])(portalEl, anchorRef, this.props.options || {}); // Make any child FloatAnchors reposition
+        var _choice = (0, _containByScreen["default"])(portalEl, anchorRef, this.props.options || {});
 
+        if (!(0, _isEqual["default"])(this.state.choice, _choice)) {
+          this.setState({
+            choice: _choice
+          });
+        } // Make any child FloatAnchors reposition
+
+
         this._childContext.repositionEvents.value(null);
@@ -270,5 +294,4 @@ }
     value: function render() {
-      var _this$props = this.props,
-          anchor = _this$props.anchor,
-          _float = _this$props["float"];
+      var anchor = this.props.anchor;
+      var _float = this.state.floatNode;
       var floatPortal = null;
@@ -313,2 +336,9 @@
     })
+  }, {
+    key: "getDerivedStateFromProps",
+    value: function getDerivedStateFromProps(props, state) {
+      return {
+        floatNode: typeof props["float"] === 'function' ? props["float"](state.choice) : props["float"]
+      };
+    }
   }]);
@@ -322,3 +352,3 @@ return FloatAnchor;
   parentElement: _propTypes["default"].object,
-  "float": _propTypes["default"].node,
+  "float": _propTypes["default"].oneOfType([_propTypes["default"].node, _propTypes["default"].func]),
   options: _propTypes["default"].object,
@@ -331,2 +361,2 @@ zIndex: _propTypes["default"].oneOfType([_propTypes["default"].number, _propTypes["default"].string]),
 module.exports.default = exports.default;
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@flow */\n\nimport fromEventsWithOptions from './lib/fromEventsWithOptions';\nimport LifecycleHelper from './LifecycleHelper';\nimport Kefir from 'kefir';\nimport kefirBus from 'kefir-bus';\nimport type {Bus} from 'kefir-bus';\nimport React from 'react';\nimport {createPortal} from 'react-dom';\nimport PropTypes from 'prop-types';\nimport containByScreen from 'contain-by-screen';\nimport type {Options} from 'contain-by-screen';\nimport isEqual from 'lodash/isEqual';\n\nconst requestAnimationFrame = global.requestAnimationFrame || (cb => Promise.resolve().then(cb));\n\ntype FloatAnchorContextType = {\n  // Emits an event after the component repositions, so the children can reposition themselves to match.\n  repositionEvents: Kefir.Observable<null>,\n\n  // Signifies this component has a repositionAsync queued up. Children components should ignore repositionAsync\n  // calls while this is true. Children should copy their parent whenever their parent sets theirs to true.\n  // Components should clear this flag when they reposition unless they have a parent with it still set.\n  repositionAsyncQueued: boolean,\n\n  // Emits every time repositionAsyncQueued becomes true.\n  repositionAsyncEvents: Kefir.Observable<null>\n};\n\n// Context is used so that when a FloatAnchor has reposition() called on it,\n// all of its descendant FloatAnchor elements reposition too.\nconst FloatAnchorContext = React.createContext<?FloatAnchorContextType>(null);\n\nexport type {Options} from 'contain-by-screen';\n\nexport type Props = {\n  anchor: (anchorRef: React$Ref<any>) => React$Node;\n  parentElement?: ?HTMLElement;\n  float?: ?React$Node;\n  options?: ?Options;\n  zIndex?: ?number|string;\n  floatContainerClassName?: ?string;\n};\nexport default class FloatAnchor extends React.Component<Props> {\n  static propTypes = {\n    anchor: PropTypes.func.isRequired,\n    parentElement: PropTypes.object,\n    float: PropTypes.node,\n    options: PropTypes.object,\n    zIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n    floatContainerClassName: PropTypes.string\n  };\n\n  static contextType = FloatAnchorContext;\n\n  _portalEl: ?HTMLElement;\n  _portalRemoval: Bus<null> = kefirBus();\n  _unmount: Bus<null> = kefirBus();\n  _childContext = {\n    repositionEvents: (kefirBus(): Bus<null>),\n    repositionAsyncQueued: false,\n    repositionAsyncEvents: (kefirBus(): Bus<null>)\n  };\n\n  _anchorRef: ?HTMLElement = null;\n\n  static *parentNodes(node: Node): Iterator<Node> {\n    do {\n      yield (node: Node);\n    } while ((node = (node: any).rfaAnchor || (node: any).parentNode));\n  }\n\n  _setAnchorRef = (anchorRef: ?HTMLElement) => {\n    this._anchorRef = anchorRef;\n\n    const portalEl = this._portalEl;\n    if (portalEl) {\n      (portalEl: any).rfaAnchor = anchorRef ? anchorRef : undefined;\n    }\n  };\n\n  _getOrCreatePortalEl(): HTMLElement {\n    const portalEl_firstCheck = this._portalEl;\n    if (portalEl_firstCheck) {\n      return portalEl_firstCheck;\n    }\n\n    const portalEl = this._portalEl = document.createElement('div');\n    portalEl.className = this.props.floatContainerClassName || '';\n    portalEl.style.zIndex = String(this.props.zIndex);\n    portalEl.style.position = 'fixed';\n\n    return portalEl;\n  }\n\n  componentDidMount() {\n    const parentCtx: ?FloatAnchorContextType = this.context;\n    if (parentCtx) {\n      parentCtx.repositionEvents\n        .takeUntilBy(this._unmount)\n        .onValue(() => this.reposition());\n\n      parentCtx.repositionAsyncEvents\n        .takeUntilBy(this._unmount)\n        .onValue(() => {\n          if (!this._childContext.repositionAsyncQueued) {\n            this._childContext.repositionAsyncQueued = true;\n            this._childContext.repositionAsyncEvents.value(null);\n          }\n        });\n\n      if (parentCtx.repositionAsyncQueued) {\n        this._childContext.repositionAsyncQueued = true;\n        this._childContext.repositionAsyncEvents.value(null);\n      }\n    }\n\n    if (this.props.float != null) {\n      // We need to reposition after the page has had its layout done.\n      this.repositionAsync();\n    }\n  }\n\n  componentDidUpdate(prevProps: Props) {\n    const portalEl = this._portalEl;\n    if (portalEl) {\n      if (this.props.float == null) {\n        this._portalRemoval.value(null);\n      } else {\n        if (prevProps.parentElement !== this.props.parentElement) {\n          this._portalRemoval.value(null);\n          this._mountPortalEl();\n        }\n        if (prevProps.floatContainerClassName !== this.props.floatContainerClassName) {\n          portalEl.className = this.props.floatContainerClassName || '';\n        }\n        if (prevProps.zIndex !== this.props.zIndex) {\n          portalEl.style.zIndex = String(this.props.zIndex);\n        }\n\n        if (\n          prevProps.float !== this.props.float ||\n          !isEqual(prevProps.options, this.props.options)\n        ) {\n          this.repositionAsync();\n        }\n      }\n    } else {\n      if (this.props.float != null) {\n        throw new Error('Should not happen: portalEl was null after rendering with float prop');\n      }\n    }\n  }\n\n  componentWillUnmount() {\n    this._portalRemoval.value(null);\n    this._unmount.value(null);\n    this._childContext.repositionEvents.end();\n    this._childContext.repositionAsyncEvents.end();\n  }\n\n  // Repositions on the next animation frame. Automatically batches with other repositionAsync calls\n  // in the same tree.\n  repositionAsync() {\n    // If we already have a repositionAsync queued up, there's no reason to queue another.\n    if (this._childContext.repositionAsyncQueued) {\n      return;\n    }\n    this._childContext.repositionAsyncQueued = true;\n    this._childContext.repositionAsyncEvents.value(null);\n\n    requestAnimationFrame(() => {\n      // If our parent still has a repositionAsync queued up, then don't fire.\n      // The parent may have queued up a repositionAsync in the time since this repositionAsync() was called.\n      const parentCtx: ?FloatAnchorContextType = this.context;\n      if (!parentCtx || !parentCtx.repositionAsyncQueued) {\n        // Make sure we still have a repositionAsync queued up. 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@flow */\n\nimport fromEventsWithOptions from './lib/fromEventsWithOptions';\nimport LifecycleHelper from './LifecycleHelper';\nimport Kefir from 'kefir';\nimport kefirBus from 'kefir-bus';\nimport type {Bus} from 'kefir-bus';\nimport React from 'react';\nimport {createPortal} from 'react-dom';\nimport PropTypes from 'prop-types';\nimport containByScreen from 'contain-by-screen';\nimport type {Options, Choice} from 'contain-by-screen';\nimport isEqual from 'lodash/isEqual';\n\nconst requestAnimationFrame = global.requestAnimationFrame || (cb => Promise.resolve().then(cb));\n\ntype FloatAnchorContextType = {\n  // Emits an event after the component repositions, so the children can reposition themselves to match.\n  repositionEvents: Kefir.Observable<null>,\n\n  // Signifies this component has a repositionAsync queued up. Children components should ignore repositionAsync\n  // calls while this is true. Children should copy their parent whenever their parent sets theirs to true.\n  // Components should clear this flag when they reposition unless they have a parent with it still set.\n  repositionAsyncQueued: boolean,\n\n  // Emits every time repositionAsyncQueued becomes true.\n  repositionAsyncEvents: Kefir.Observable<null>\n};\n\n// Context is used so that when a FloatAnchor has reposition() called on it,\n// all of its descendant FloatAnchor elements reposition too.\nconst FloatAnchorContext = React.createContext<?FloatAnchorContextType>(null);\n\nexport type {Options, Choice} from 'contain-by-screen';\n\nexport type Props = {\n  anchor: (anchorRef: React$Ref<any>) => React$Node;\n  parentElement?: ?HTMLElement;\n  float?: ?React$Node | ((choice: Choice | null) => React$Node);\n  options?: ?Options;\n  zIndex?: ?number|string;\n  floatContainerClassName?: ?string;\n};\ntype State = {\n  choice: Choice | null;\n  floatNode: ?React$Node;\n};\nexport default class FloatAnchor extends React.Component<Props, State> {\n  static propTypes = {\n    anchor: PropTypes.func.isRequired,\n    parentElement: PropTypes.object,\n    float: PropTypes.oneOfType([PropTypes.node, PropTypes.func]),\n    options: PropTypes.object,\n    zIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n    floatContainerClassName: PropTypes.string\n  };\n\n  static contextType = FloatAnchorContext;\n\n  state: State = {\n    choice: null,\n    floatNode: null\n  };\n\n  _portalEl: ?HTMLElement;\n  _portalRemoval: Bus<null> = kefirBus();\n  _unmount: Bus<null> = kefirBus();\n  _childContext = {\n    repositionEvents: (kefirBus(): Bus<null>),\n    repositionAsyncQueued: false,\n    repositionAsyncEvents: (kefirBus(): Bus<null>)\n  };\n\n  _anchorRef: ?HTMLElement = null;\n\n  static *parentNodes(node: Node): Iterator<Node> {\n    do {\n      yield (node: Node);\n    } while ((node = (node: any).rfaAnchor || (node: any).parentNode));\n  }\n\n  _setAnchorRef = (anchorRef: ?HTMLElement) => {\n    this._anchorRef = anchorRef;\n\n    const portalEl = this._portalEl;\n    if (portalEl) {\n      (portalEl: any).rfaAnchor = anchorRef ? anchorRef : undefined;\n    }\n  };\n\n  _getOrCreatePortalEl(): HTMLElement {\n    const portalEl_firstCheck = this._portalEl;\n    if (portalEl_firstCheck) {\n      return portalEl_firstCheck;\n    }\n\n    const portalEl = this._portalEl = document.createElement('div');\n    portalEl.className = this.props.floatContainerClassName || '';\n    portalEl.style.zIndex = String(this.props.zIndex);\n    portalEl.style.position = 'fixed';\n\n    return portalEl;\n  }\n\n  componentDidMount() {\n    const parentCtx: ?FloatAnchorContextType = this.context;\n    if (parentCtx) {\n      parentCtx.repositionEvents\n        .takeUntilBy(this._unmount)\n        .onValue(() => this.reposition());\n\n      parentCtx.repositionAsyncEvents\n        .takeUntilBy(this._unmount)\n        .onValue(() => {\n          if (!this._childContext.repositionAsyncQueued) {\n            this._childContext.repositionAsyncQueued = true;\n            this._childContext.repositionAsyncEvents.value(null);\n          }\n        });\n\n      if (parentCtx.repositionAsyncQueued) {\n        this._childContext.repositionAsyncQueued = true;\n        this._childContext.repositionAsyncEvents.value(null);\n      }\n    }\n\n    if (this.state.floatNode != null) {\n      // We need to reposition after the page has had its layout done.\n      this.repositionAsync();\n    }\n  }\n\n  static getDerivedStateFromProps(props: Props, state: State): $Shape<State> | null {\n    return {\n      floatNode: typeof props.float === 'function' ? props.float(state.choice) : props.float\n    };\n  }\n\n  shouldComponentUpdate(nextProps: Props, nextState: State) {\n    // If the only thing changed is state.choice *and* typeof props.float !== 'function', don't re-render.\n    // If nothing has changed, allow the re-render so we keep the same behavior on a plain forceUpdate of a parent.\n    // TODO in next major version, don't re-render when nothing has changed.\n    if (\n      typeof nextProps.float !== 'function' &&\n      this.state.choice !== nextState.choice &&\n      this.props.anchor === nextProps.anchor &&\n      this.props.parentElement === nextProps.parentElement &&\n      this.props.float === nextProps.float &&\n      this.props.options === nextProps.options &&\n      this.props.zIndex === nextProps.zIndex &&\n      this.props.floatContainerClassName === nextProps.floatContainerClassName\n    ) {\n      return false;\n    }\n    return true;\n  }\n\n  componentDidUpdate(prevProps: Props, prevState: State) {\n    const portalEl = this._portalEl;\n    if (portalEl) {\n      if (this.state.floatNode == null) {\n        this._portalRemoval.value(null);\n      } else {\n        if (prevProps.parentElement !== this.props.parentElement) {\n          this._portalRemoval.value(null);\n          this._mountPortalEl();\n        }\n        if (prevProps.floatContainerClassName !== this.props.floatContainerClassName) {\n          portalEl.className = this.props.floatContainerClassName || '';\n        }\n        if (prevProps.zIndex !== this.props.zIndex) {\n          portalEl.style.zIndex = String(this.props.zIndex);\n        }\n\n        // If this re-render happened because of a change in position choice, don't reposition again now.\n        if (\n          (prevState.floatNode !== this.state.floatNode && prevState.choice === this.state.choice) ||\n          !isEqual(prevProps.options, this.props.options)\n        ) {\n          this.repositionAsync();\n        }\n      }\n    } else {\n      if (this.state.floatNode != null) {\n        throw new Error('Should not happen: portalEl was null after rendering with float prop');\n      }\n    }\n  }\n\n  componentWillUnmount() {\n    this._portalRemoval.value(null);\n    this._unmount.value(null);\n    this._childContext.repositionEvents.end();\n    this._childContext.repositionAsyncEvents.end();\n  }\n\n  // Repositions on the next animation frame. Automatically batches with other repositionAsync calls\n  // in the same tree.\n  repositionAsync() {\n    // If we already have a repositionAsync queued up, there's no reason to queue another.\n    if (this._childContext.repositionAsyncQueued) {\n      return;\n    }\n    this._childContext.repositionAsyncQueued = true;\n    this._childContext.repositionAsyncEvents.value(null);\n\n    requestAnimationFrame(() => {\n      // If our parent still has a repositionAsync queued up, then don't fire.\n      // The parent may have queued up a repositionAsync in the time since this repositionAsync() was called.\n      const parentCtx: ?FloatAnchorContextType = this.context;\n      if (!parentCtx || !parentCtx.repositionAsyncQueued) {\n        // Make sure we still have a repositionAsync queued up. It could be that reposition() has been called\n        // in the time since repositionAsync().\n        if (this._childContext.repositionAsyncQueued) {\n          this._childContext.repositionAsyncQueued = false;\n          this.reposition();\n        }\n      }\n    });\n  }\n\n  reposition() {\n    // Only clear our repositionAsyncQueued flag if we're not reflecting our parent's true value.\n    const parentCtx: ?FloatAnchorContextType = this.context;\n    if (!parentCtx || !parentCtx.repositionAsyncQueued) {\n      this._childContext.repositionAsyncQueued = false;\n    }\n\n    const portalEl = this._portalEl;\n    const anchorRef = this._anchorRef;\n    if (portalEl && portalEl.parentElement && anchorRef) {\n      const choice = containByScreen(portalEl, anchorRef, this.props.options || {});\n      if (!isEqual(this.state.choice, choice)) {\n        this.setState({choice});\n      }\n\n      // Make any child FloatAnchors reposition\n      this._childContext.repositionEvents.value(null);\n    }\n  }\n\n  _mountPortalEl = () => {\n    const portalEl = this._portalEl;\n    /*:: if (!portalEl) throw new Error(); */\n    if (portalEl.parentElement) {\n      throw new Error('Should not happen: portalEl already in page');\n    }\n\n    const anchorRef = this._anchorRef;\n    if (!anchorRef) throw new Error('ReactFloatAnchor missing anchorRef element');\n    (portalEl: any).rfaAnchor = anchorRef;\n\n    const target = this.props.parentElement || document.body || document.documentElement;\n    /*:: if (!target) throw new Error(); */\n    target.appendChild(portalEl);\n\n    Kefir.merge([\n      Kefir.fromEvents(window, 'resize'),\n      fromEventsWithOptions(window, 'scroll', {\n        capture: true,\n        passive: true\n      }).filter(event => {\n        const anchorRef = this._anchorRef;\n        return anchorRef && event.target.contains(anchorRef);\n      })\n    ])\n      .takeUntilBy(this._portalRemoval)\n      .onValue(() => {\n        this.repositionAsync();\n      })\n      .onEnd(() => {\n        (portalEl: any).rfaAnchor = undefined;\n        /*:: if (!portalEl.parentElement) throw new Error(); */\n        portalEl.parentElement.removeChild(portalEl);\n      });\n  };\n\n  render() {\n    const {anchor} = this.props;\n    const float = this.state.floatNode;\n    let floatPortal = null;\n    if (float != null) {\n      const portalEl = this._getOrCreatePortalEl();\n      floatPortal = (\n        <FloatAnchorContext.Provider value={(this._childContext: FloatAnchorContextType)}>\n          <LifecycleHelper onMount={this._mountPortalEl} />\n          {createPortal(float, portalEl)}\n        </FloatAnchorContext.Provider>\n      );\n    }\n\n    return (\n      <>\n        {anchor((this._setAnchorRef: any))}\n        {floatPortal}\n      </>\n    );\n  }\n}\n"]}

package.json

 {
   "name": "react-float-anchor",
-  "version": "3.2.0",
+  "version": "3.3.0",
   "description": "React component for positioning an element aligned to another",
@@ -5,0 +5,0 @@ "main": "js/index.js",

README.md

@@ -35,10 +35,15 @@ # react-float-anchor
  `FloatAnchor` element was used, with no added wrapper elements around it.
-* `float` must be null, or a React node. If null, then FloatAnchor won't do
- anything other than render `anchor` as-is. If non-null, `float` will be
- rendered in a container div which has `position:fixed` styling, is attached
- directly to the document body (or parentElement), and is positioned to line up
- with the anchorRef element.
+* `float` must be null, a React node, or a function that returns a React node.
+ If null, then FloatAnchor won't do anything other than render `anchor` as-is.
+ If non-null, the `float` React node will be rendered in a container div which
+ has `position:fixed` styling, is attached directly to the document body (or
+ parentElement), and is positioned to line up with the anchorRef element.
+ If `float` is a function, then the function will receive the return value from
+ the most recent call to [contain-by-screen](https://github.com/Macil/contain-by-screen),
+ or null if it hasn't been called yet. The initial render will pass null, and
+ then the component will be re-rendered after having been positioned by
+ contain-by-screen.
 * `options` is an optional object of options to control how the float element's
  container is aligned to the anchor element. The options are the same as those
- supported by [contain-by-screen (version ^1.0)](https://github.com/AgentME/contain-by-screen#readme).
+ supported by [contain-by-screen (version ^1.0)](https://github.com/Macil/contain-by-screen#readme).
 * `zIndex` is an optional number controlling the z-index CSS property of the
@@ -45,0 +50,0 @@ float element's container.

No alert changes

Improved metrics

Total package byte prevSize

65318

increased by13.09%

Lines of code

351

increased by8.33%

Number of lines in readme file

86

increased by6.17%

No dependency changes