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feat(chat): load more messages #35

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24 changes: 22 additions & 2 deletions example/App.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ import {
import {GiftedChat, Actions, Bubble} from 'react-native-gifted-chat';
import CustomActions from './CustomActions';
import CustomView from './CustomView';
import _ from 'lodash';

export default class Example extends React.Component {
constructor(props) {
Expand All @@ -27,6 +28,7 @@ export default class Example extends React.Component {
this.renderBubble = this.renderBubble.bind(this);
this.renderFooter = this.renderFooter.bind(this);
this.onLoadEarlier = this.onLoadEarlier.bind(this);
this.onLoadNewer = this.onLoadNewer.bind(this);

this._isAlright = null;
}
Expand All @@ -40,6 +42,10 @@ export default class Example extends React.Component {
});
}

componentDidMount() {
this.onLoadNewer();
}

componentWillUnmount() {
this._isMounted = false;
}
Expand All @@ -55,7 +61,7 @@ export default class Example extends React.Component {
if (this._isMounted === true) {
this.setState((previousState) => {
return {
messages: GiftedChat.prepend(previousState.messages, require('./data/old_messages.js')),
messages: require('./data/old_messages.js').concat(previousState.messages),
loadEarlier: false,
isLoadingEarlier: false,
};
Expand All @@ -64,6 +70,19 @@ export default class Example extends React.Component {
}, 1000); // simulating network
}

onLoadNewer() {
setTimeout(() => {
if (this._isMounted) {
this.setState((previousState) => {
return {
messages: _.cloneDeep(previousState.messages).concat(require('./data/new_messages')()),
};
});
}
}, 1000);
}


onSend(messages = []) {
this.setState((previousState) => {
return {
Expand All @@ -80,7 +99,7 @@ export default class Example extends React.Component {
if ((messages[0].image || messages[0].location) || !this._isAlright) {
this.setState((previousState) => {
return {
typingText: 'React Native is typing'
typingText: 'React Native is typing',
};
});
}
Expand Down Expand Up @@ -193,6 +212,7 @@ export default class Example extends React.Component {
onSend={this.onSend}
loadEarlier={this.state.loadEarlier}
onLoadEarlier={this.onLoadEarlier}
onLoadNewer={this.onLoadNewer}
isLoadingEarlier={this.state.isLoadingEarlier}

user={{
Expand Down
169 changes: 169 additions & 0 deletions example/data/new_messages.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,169 @@
module.exports = function () {
return [
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
{
_id: Math.round(Math.random() * 1000000),
text: 'New message',
createdAt: new Date(Date.UTC(2016, 7, 30, 17, 20, 0)),
user: {
_id: 1,
name: 'Developer',
},
sent: true,
received: true,
// location: {
// latitude: 48.864601,
// longitude: 2.398704
// },
},
];
}
1 change: 1 addition & 0 deletions example/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
"sync": "rm -rf ./node_modules/react-native-gifted-chat; sane '/usr/bin/rsync -v -a --exclude .git --exclude example --exclude __tests__ --exclude node_modules ../ ./node_modules/react-native-gifted-chat/' .. --glob='{**/*.json,**/*.js}'"
},
"dependencies": {
"lodash": "^4.17.4",
"prop-types": "15.5.10",
"react": "16.0.0-alpha.12",
"react-native": "0.46.3",
Expand Down
2 changes: 2 additions & 0 deletions src/GiftedChat.js
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Original file line number Diff line number Diff line change
Expand Up @@ -553,6 +553,7 @@ GiftedChat.defaultProps = {
}),
loadEarlier: false,
onLoadEarlier: () => {},
onLoadNewer: () => {},
isLoadingEarlier: false,
renderLoading: null,
renderLoadEarlier: null,
Expand Down Expand Up @@ -603,6 +604,7 @@ GiftedChat.propTypes = {
isAnimated: PropTypes.bool,
loadEarlier: PropTypes.bool,
onLoadEarlier: PropTypes.func,
onLoadNewer: PropTypes.func,
isLoadingEarlier: PropTypes.bool,
renderLoading: PropTypes.func,
renderLoadEarlier: PropTypes.func,
Expand Down
21 changes: 19 additions & 2 deletions src/MessageContainer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,9 +14,11 @@ export default class MessageContainer extends React.Component {
this.renderRow = this.renderRow.bind(this);
this.renderFooter = this.renderFooter.bind(this);
this.renderLoadEarlier = this.renderLoadEarlier.bind(this);
this.onScroll = this.onScroll.bind(this);

this.state = {
messages: this.prepareMessages(props.messages),
isLoadingNewer: false,
};
}

Expand Down Expand Up @@ -112,6 +114,17 @@ export default class MessageContainer extends React.Component {
return <Message {...messageProps}/>;
}

async onScroll({nativeEvent}) {
const offset = nativeEvent.contentSize.height - nativeEvent.contentOffset.y;
const threshold = offset / nativeEvent.layoutMeasurement.height - 1;
if (!this.state.isLoadingNewer && threshold <= this.props.onTopReachedThreshold) {
await this.setState({isLoadingNewer: true});
await this.props.onLoadNewer();
await this.setState({isLoadingNewer: false});
//console.log('!!!!!!!!!!!!!!', offset, threshold);
}
}

keyExtractor = (item, index) => item._id;

render() {
Expand All @@ -131,6 +144,8 @@ export default class MessageContainer extends React.Component {
ListFooterComponent={this.renderLoadEarlier}
onEndReached={this.props.onTopReached}
onEndReachedThreshold={this.props.onTopReachedThreshold}
onScroll={this.onScroll}
scrollEventThrottle={500}
/>
</View>
);
Expand All @@ -142,8 +157,9 @@ MessageContainer.defaultProps = {
user: {},
renderFooter: null,
renderMessage: null,
onLoadEarlier: () => {
},
onLoadEarlier: () => {},
onLoadNewer: () => {},
onTopReachedThreshold: 0.5,
};

MessageContainer.propTypes = {
Expand All @@ -152,6 +168,7 @@ MessageContainer.propTypes = {
renderFooter: PropTypes.func,
renderMessage: PropTypes.func,
onLoadEarlier: PropTypes.func,
onLoadNewer: PropTypes.func,
flatListProps: PropTypes.object,
flatListKeyboardProps: PropTypes.object,
onTopReached: PropTypes.func,
Expand Down