fixes #7 inject state in ScrollResponders @thanks smothers

Now you can get `state` and `context`(ref to swiper's `this`) from params

README.md

@@ -35,6 +35,8 @@ The best Swiper component for React Native.
 
 - [x] Custom pagination style
 
+- [x] State inject
+
 ## Changelogs
 
 - **[v1.2.2]**
@@ -167,7 +169,7 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Basic
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | horizontal | true | `bool` | If `true`, the scroll view's children are arranged horizontally in a row instead of vertically in a column. |
 | loop | true | `bool` | Set to `true` to enable continuous loop mode. |
@@ -177,7 +179,7 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Custom basic style & content
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | width | - | `number` | If no specify default enable fullscreen mode by `flex: 1`. |
 | height | - | `number` | If no specify default fullscreen mode by `flex: 1`. |
@@ -185,17 +187,17 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Pagination
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | showsPagination | true | `bool` | Set to `true` make pagination visible. |
 | paginationStyle | {...} | `style` | Custom styles will merge with the default styles. |
-| renderPagination | - | `function` | Complete control how to render pagination with two params (`index`, `total`) ref to `this.state.index` / `this.state.total`, For example: show numbers instead of dots. |
+| renderPagination | - | `function` | Complete control how to render pagination with three params (`index`, `total`, `context`) ref to `this.state.index` / `this.state.total` / `this`, For example: show numbers instead of dots. |
 | dot | `<View style={{backgroundColor:'rgba(0,0,0,.2)', width: 8, height: 8,borderRadius: 4, marginLeft: 3, marginRight: 3, marginTop: 3, marginBottom: 3,}} />` | `element` | Allow custom the dot element. |
 | activeDot | `<View style={{backgroundColor: '#007aff', width: 8, height: 8, borderRadius: 4, marginLeft: 3, marginRight: 3, marginTop: 3, marginBottom: 3,}} />` | `element` | Allow custom the active-dot element. |
 
 #### Autoplay
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | autoplay | true | `bool` | Set to `true` enable auto play mode. |
 | autoplayTimeout | 2.5 | `number` | Delay between auto play transitions (in second). |
@@ -203,7 +205,7 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Control buttons
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | showsButtons | true | `bool` | Set to `true` make control buttons visible. |
 | buttonWrapperStyle | `{backgroundColor: 'transparent', flexDirection: 'row', position: 'absolute', top: 0, left: 0, flex: 1, paddingHorizontal: 10, paddingVertical: 10, justifyContent: 'space-between', alignItems: 'center'}` | `style` | Custom styles. |
@@ -212,14 +214,14 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Props of Children
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | style | {...} | `style` | Custom styles will merge with the default styles. |
 | title | {<Text numberOfLines={1}>...</Text>} | `element` | If this parameter is not specified, will not render the title. |
 
 #### Basic props of `<ScrollView />`
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Default  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
 | horizontal | true | `bool` | If `true`, the scroll view's children are arranged horizontally in a row instead of vertically in a column. |
 | pagingEnabled | true | `bool` | If true, the scroll view stops on multiples of the scroll view's size when scrolling. This can be used for horizontal pagination.  |
@@ -234,16 +236,34 @@ AppRegistry.registerComponent('swiper', () => swiper)
 
 #### Supported ScrollResponder
 
-| Prop  | Default  | Type | Describe |
+| Prop  | Params  | Type | Description |
 | :------------ |:---------------:| :---------------:| :-----|
-| onMomentumScrollBegin | - | `function` | When animation begins after letting up |
-| onMomentumScrollEnd | - | `function` | Makes no sense why this occurs first during bounce |
-| onTouchStartCapture | - | `function` | Immediately after `onMomentumScrollEnd` |
-| onTouchStart | - | `function` | Same, but bubble phase |
-| onTouchEnd | - | `function` | You could hold the touch start for a long time |
-| onResponderRelease | - | `function` | When lifting up - you could pause forever before * lifting |
+| onMomentumScrollBegin | `e` / `state` / `context` | `function` | When animation begins after letting up |
+| onMomentumScrollEnd | `e` / `state` / `context` | `function` | Makes no sense why this occurs first during bounce |
+| onTouchStartCapture | `e` / `state` / `context` | `function` | Immediately after `onMomentumScrollEnd` |
+| onTouchStart | `e` / `state` / `context` | `function` | Same, but bubble phase |
+| onTouchEnd | `e` / `state` / `context` | `function` | You could hold the touch start for a long time |
+| onResponderRelease | `e` / `state` / `context` | `function` | When lifting up - you could pause forever before * lifting |
 
-> @see: https://github.com/facebook/react-native/blob/master/Libraries/Components/ScrollResponder.js
+> Note: each ScrollResponder be injected with two params: `state` and `context`, you can get `state` and `this`(ref to swiper's context) from params, for example:
+
+```jsx
+var swiper = React.createClass({
+  _onMomentumScrollEnd: function (e, state, context) {
+    console.log(state, context.state)
+  },
+  render: function() {
+    return (
+      <Swiper style={styles.wrapper}
+      onMomentumScrollEnd ={this._onMomentumScrollEnd}
+     ...
+      </Swiper>
+    )
+  }
+})
+```
+
+> More ScrollResponder info, see: https://github.com/facebook/react-native/blob/master/Libraries/Components/ScrollResponder.js
 
 ### Examples
 

dist/index.js

@@ -192,6 +192,10 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
    */
   autoplayTimer: null,
 
+  componentWillMount: function componentWillMount() {
+    this.props = this.injectState(this.props);
+  },
+
   componentDidMount: function componentDidMount() {
     this.autoplay();
   },
@@ -227,7 +231,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
     });
 
     this.setTimeout(function () {
-      _this2.props.onScrollBeginDrag && _this2.props.onScrollBeginDrag.call(_this2, e);
+      _this2.props.onScrollBeginDrag && _this2.props.onScrollBeginDrag(e, _this2.state, _this2);
     });
   },
 
@@ -251,7 +255,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
       _this3.autoplay();
 
       // if `onMomentumScrollEnd` registered will be called here
-      _this3.props.onMomentumScrollEnd && _this3.props.onMomentumScrollEnd.call(_this3, e);
+      _this3.props.onMomentumScrollEnd && _this3.props.onMomentumScrollEnd(e, _this3.state, _this3);
     });
   },
 
@@ -400,6 +404,37 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
     );
   },
 
+  /**
+   * Inject state to ScrollResponder
+   * @param  {object} props origin props
+   * @return {object} props injected props
+   */
+  injectState: function injectState(props) {
+    var _this5 = this;
+
+    /*    const scrollResponders = [
+          'onMomentumScrollBegin',
+          'onTouchStartCapture',
+          'onTouchStart',
+          'onTouchEnd',
+          'onResponderRelease',
+        ]*/
+
+    for (var prop in props) {
+      // if(~scrollResponders.indexOf(prop)
+      if (typeof props[prop] === 'function' && prop !== 'onMomentumScrollEnd' && prop !== 'renderPagination' && prop !== 'onScrollBeginDrag') {
+        (function () {
+          var originResponder = props[prop];
+          props[prop] = function (e) {
+            return originResponder(e, _this5.state, _this5);
+          };
+        })();
+      }
+    }
+
+    return props;
+  },
+
   /**
    * Default render
    * @return {object} react-dom
@@ -456,7 +491,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
           onMomentumScrollEnd: this.onScrollEnd }),
         pages
       ),
-      props.showsPagination && (props.renderPagination ? this.props.renderPagination.call(this, state.index, state.total) : this.renderPagination()),
+      props.showsPagination && (props.renderPagination ? this.props.renderPagination(state.index, state.total, this) : this.renderPagination()),
       this.renderTitle(),
       this.props.showsButtons && this.renderButtons()
     );

examples/examples/basic.js

@@ -35,9 +35,15 @@ var styles = StyleSheet.create({
 })
 
 var swiper = React.createClass({
+  _onMomentumScrollEnd: function (e, state, context) {
+    // you can get `state` and `this`(ref to swiper's context) from params
+    console.log(state, context.state)
+  },
   render: function() {
     return (
-      <Swiper style={styles.wrapper} showsButtons={true}>
+      <Swiper style={styles.wrapper}
+      onMomentumScrollEnd={this._onMomentumScrollEnd}
+      showsButtons={true}>
         <View style={styles.slide1}>
           <Text style={styles.text}>Hello Swiper</Text>
         </View>

examples/examples/index.js

@@ -192,6 +192,10 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
    */
   autoplayTimer: null,
 
+  componentWillMount: function componentWillMount() {
+    this.props = this.injectState(this.props);
+  },
+
   componentDidMount: function componentDidMount() {
     this.autoplay();
   },
@@ -227,7 +231,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
     });
 
     this.setTimeout(function () {
-      _this2.props.onScrollBeginDrag && _this2.props.onScrollBeginDrag.call(_this2, e);
+      _this2.props.onScrollBeginDrag && _this2.props.onScrollBeginDrag(e, _this2.state, _this2);
     });
   },
 
@@ -251,7 +255,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
       _this3.autoplay();
 
       // if `onMomentumScrollEnd` registered will be called here
-      _this3.props.onMomentumScrollEnd && _this3.props.onMomentumScrollEnd.call(_this3, e);
+      _this3.props.onMomentumScrollEnd && _this3.props.onMomentumScrollEnd(e, _this3.state, _this3);
     });
   },
 
@@ -400,6 +404,37 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
     );
   },
 
+  /**
+   * Inject state to ScrollResponder
+   * @param  {object} props origin props
+   * @return {object} props injected props
+   */
+  injectState: function injectState(props) {
+    var _this5 = this;
+
+    /*    const scrollResponders = [
+          'onMomentumScrollBegin',
+          'onTouchStartCapture',
+          'onTouchStart',
+          'onTouchEnd',
+          'onResponderRelease',
+        ]*/
+
+    for (var prop in props) {
+      // if(~scrollResponders.indexOf(prop)
+      if (typeof props[prop] === 'function' && prop !== 'onMomentumScrollEnd' && prop !== 'renderPagination' && prop !== 'onScrollBeginDrag') {
+        (function () {
+          var originResponder = props[prop];
+          props[prop] = function (e) {
+            return originResponder(e, _this5.state, _this5);
+          };
+        })();
+      }
+    }
+
+    return props;
+  },
+
   /**
    * Default render
    * @return {object} react-dom
@@ -456,7 +491,7 @@ exports['default'] = _React$StyleSheet$Text$View$ScrollView$TouchableOpacity2['d
           onMomentumScrollEnd: this.onScrollEnd }),
         pages
       ),
-      props.showsPagination && (props.renderPagination ? this.props.renderPagination.call(this, state.index, state.total) : this.renderPagination()),
+      props.showsPagination && (props.renderPagination ? this.props.renderPagination(state.index, state.total, this) : this.renderPagination()),
       this.renderTitle(),
       this.props.showsButtons && this.renderButtons()
     );

examples/examples/swiper.js

@@ -60,7 +60,7 @@ var swiper = React.createClass({
         </Swiper>
 
         <Swiper style={styles.wrapper} height={240}
-          onMomentumScrollEnd={function(){console.log('this.state.index:', this.state.index)}}
+          onMomentumScrollEnd={function(e, state, context){console.log('index:', state.index)}}
           dot={<View style={{backgroundColor:'rgba(0,0,0,.2)', width: 5, height: 5,borderRadius: 4, marginLeft: 3, marginRight: 3, marginTop: 3, marginBottom: 3,}} />}
           activeDot={<View style={{backgroundColor: '#000', width: 8, height: 8, borderRadius: 4, marginLeft: 3, marginRight: 3, marginTop: 3, marginBottom: 3,}} />}
           paginationStyle={{

examples/examples/swiper_number.js

@@ -25,7 +25,7 @@ var styles = StyleSheet.create({
   }
 })
 
-var renderPagination = function (index, total) {
+var renderPagination = function (index, total, context) {
   return (
     <View style={{
       position: 'absolute',

src/index.js

@@ -192,6 +192,10 @@ export default React.createClass({
    */
   autoplayTimer: null,
 
+  componentWillMount() {
+    this.props = this.injectState(this.props)
+  },
+
   componentDidMount() {
     this.autoplay()
   },
@@ -227,7 +231,7 @@ export default React.createClass({
     })
 
     this.setTimeout(() => {
-      this.props.onScrollBeginDrag && this.props.onScrollBeginDrag.call(this, e)
+      this.props.onScrollBeginDrag && this.props.onScrollBeginDrag(e, this.state, this)
     })
   },
 
@@ -250,7 +254,7 @@ export default React.createClass({
       this.autoplay()
 
       // if `onMomentumScrollEnd` registered will be called here
-      this.props.onMomentumScrollEnd && this.props.onMomentumScrollEnd.call(this, e)
+      this.props.onMomentumScrollEnd && this.props.onMomentumScrollEnd(e, this.state, this)
     })
   },
 
@@ -387,6 +391,35 @@ export default React.createClass({
     )
   },
 
+  /**
+   * Inject state to ScrollResponder
+   * @param  {object} props origin props
+   * @return {object} props injected props
+   */
+  injectState(props) {
+/*    const scrollResponders = [
+      'onMomentumScrollBegin',
+      'onTouchStartCapture',
+      'onTouchStart',
+      'onTouchEnd',
+      'onResponderRelease',
+    ]*/
+
+    for(let prop in props) {
+      // if(~scrollResponders.indexOf(prop)
+      if(typeof props[prop] === 'function'
+        && prop !== 'onMomentumScrollEnd'
+        && prop !== 'renderPagination'
+        && prop !== 'onScrollBeginDrag'
+      ) {
+        let originResponder = props[prop]
+        props[prop] = (e) => originResponder(e, this.state, this)
+      }
+    }
+
+    return props
+  },
+
   /**
    * Default render
    * @return {object} react-dom
@@ -434,7 +467,7 @@ export default React.createClass({
           {pages}
         </ScrollView>
         {props.showsPagination && (props.renderPagination
-          ? this.props.renderPagination.call(this, state.index, state.total)
+          ? this.props.renderPagination(state.index, state.total, this)
           : this.renderPagination())}
         {this.renderTitle()}
         {this.props.showsButtons && this.renderButtons()}