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index.js
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index.js
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/*
Copyright 2017 Salathé Lab - EPFL - Boris Conforty
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/* @flow */
/* eslint
no-underscore-dangle:
["error", { "allow": ["_onDidScan", "_onSettingsDidChange", "_activity"] }]
no-console:
0
*/
import React, { PropTypes } from 'react';
import {
NativeModules,
Platform,
requireNativeComponent,
UIManager,
View,
Event,
} from 'react-native';
import NativeComponent from './SGNativeComponent';
import type {
ScanditPointType as PointType,
ScanditSizeType as SizeType,
ScanditRectType as RectType,
ScanditScanAreaType as ScanAreaType,
ScanditSymbologyType as SymbologyType,
ScanditSettingsType as SettingsType,
} from './SGScanditTypes';
const { SGScandit, SGScanditPicker } = NativeModules;
const iOS = Platform.OS === 'ios';
const Commands = iOS
? SGScanditPicker
: UIManager.SGScanditPicker.Commands;
type ScanditPickerPropsType = {
}
type ScanditPickerActivityType = 'active' | 'paused' | 'stopped';
export class ScanditPicker extends NativeComponent {
_onDidScan: Function;
_onSettingsDidChange: Function;
_activity: ScanditPickerActivityType;
constructor(props: ScanditPickerPropsType) {
super(props);
this._onDidScan = this._onDidScan.bind(this);
this._onSettingsDidChange = this._onSettingsDidChange.bind(this);
this._activity = 'stopped';
}
_onDidScan(event: Event) {
if (this.props.onScan) {
this.props.onScan(event.nativeEvent);
}
if (this.props.onCodeScan) {
const codes = event.nativeEvent.newlyRecognizedCodes;
if (codes && codes.length) {
this.props.onCodeScan(codes[0]);
}
}
}
_onSettingsDidChange(event: Event) {
if (!this.props.onSettingsChange) {
return;
}
this.props.onSettingsChange(event.nativeEvent);
}
componentDidMount() {
this.startScanning();
}
getSettings(): Promise<*> {
return this.dispatchCommand(Commands.getSettings);
}
setSettings(settings: SettingsType): Promise<*> {
return this.dispatchCommand(Commands.setSettings, [settings]);
}
startScanning(): Promise<*> {
return this.dispatchCommand(Commands.startScanning);
}
startScanningInPausedState() {
this.dispatchCommand(Commands.startScanningInPausedState);
}
stopScanning() {
this.dispatchCommand(Commands.stopScanning);
}
pauseScanning() {
this.dispatchCommand(Commands.pauseScanning);
}
resumeScanning() {
this.dispatchCommand(Commands.resumeScanning);
}
activity(): string {
return this._activity;
}
render() {
return (<SGScanditPickerComponent
{...this.props}
onDidScan={this._onDidScan}
onSettingsDidChange={this._onSettingsDidChange}
/>);
}
}
ScanditPicker.propTypes = {
settings: PropTypes.object.isRequired, // eslint-disable-line react/forbid-prop-types
onScan: PropTypes.func,
onCodeScan: PropTypes.func,
onSettingsChange: PropTypes.func,
...View.propTypes,
};
const SGScanditPickerComponent = requireNativeComponent(
'SGScanditPicker',
ScanditPicker,
{
nativeOnly: {
onDidScan: true,
onSettingsDidChange: true,
},
},
);
export default SGScandit;
export type ScanditPointType = PointType;
export type ScanditSizeType = SizeType;
export type ScanditRectType = RectType;
export type ScanditScanAreaType = ScanAreaType;
export type ScanditSymbologyType = SymbologyType;
export type ScanditSettingsType = SettingsType;
export const ScanditSDKVersion = SGScandit.SDK_VERSION;