| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'dart:async'; |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/services.dart'; |
| import 'package:meta/meta.dart' show visibleForTesting; |
| |
| import 'package:image_picker_platform_interface/image_picker_platform_interface.dart'; |
| |
| final MethodChannel _channel = MethodChannel('plugins.flutter.io/image_picker'); |
| |
| /// An implementation of [ImagePickerPlatform] that uses method channels. |
| class MethodChannelImagePicker extends ImagePickerPlatform { |
| /// The MethodChannel that is being used by this implementation of the plugin. |
| @visibleForTesting |
| MethodChannel get channel => _channel; |
| |
| @override |
| Future<PickedFile?> pickImage({ |
| required ImageSource source, |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| }) async { |
| String? path = await _getImagePath( |
| source: source, |
| maxWidth: maxWidth, |
| maxHeight: maxHeight, |
| imageQuality: imageQuality, |
| preferredCameraDevice: preferredCameraDevice, |
| ); |
| return path != null ? PickedFile(path) : null; |
| } |
| |
| @override |
| Future<List<PickedFile>?> pickMultiImage({ |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| }) async { |
| final List<dynamic>? paths = await _getMultiImagePath( |
| maxWidth: maxWidth, |
| maxHeight: maxHeight, |
| imageQuality: imageQuality, |
| ); |
| if (paths == null) return null; |
| |
| return paths.map((path) => PickedFile(path)).toList(); |
| } |
| |
| Future<List<dynamic>?> _getMultiImagePath({ |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| }) { |
| if (imageQuality != null && (imageQuality < 0 || imageQuality > 100)) { |
| throw ArgumentError.value( |
| imageQuality, 'imageQuality', 'must be between 0 and 100'); |
| } |
| |
| if (maxWidth != null && maxWidth < 0) { |
| throw ArgumentError.value(maxWidth, 'maxWidth', 'cannot be negative'); |
| } |
| |
| if (maxHeight != null && maxHeight < 0) { |
| throw ArgumentError.value(maxHeight, 'maxHeight', 'cannot be negative'); |
| } |
| |
| return _channel.invokeMethod<List<dynamic>?>( |
| 'pickMultiImage', |
| <String, dynamic>{ |
| 'maxWidth': maxWidth, |
| 'maxHeight': maxHeight, |
| 'imageQuality': imageQuality, |
| }, |
| ); |
| } |
| |
| Future<String?> _getImagePath({ |
| required ImageSource source, |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| }) { |
| if (imageQuality != null && (imageQuality < 0 || imageQuality > 100)) { |
| throw ArgumentError.value( |
| imageQuality, 'imageQuality', 'must be between 0 and 100'); |
| } |
| |
| if (maxWidth != null && maxWidth < 0) { |
| throw ArgumentError.value(maxWidth, 'maxWidth', 'cannot be negative'); |
| } |
| |
| if (maxHeight != null && maxHeight < 0) { |
| throw ArgumentError.value(maxHeight, 'maxHeight', 'cannot be negative'); |
| } |
| |
| return _channel.invokeMethod<String>( |
| 'pickImage', |
| <String, dynamic>{ |
| 'source': source.index, |
| 'maxWidth': maxWidth, |
| 'maxHeight': maxHeight, |
| 'imageQuality': imageQuality, |
| 'cameraDevice': preferredCameraDevice.index |
| }, |
| ); |
| } |
| |
| @override |
| Future<PickedFile?> pickVideo({ |
| required ImageSource source, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| Duration? maxDuration, |
| }) async { |
| final String? path = await _getVideoPath( |
| source: source, |
| maxDuration: maxDuration, |
| preferredCameraDevice: preferredCameraDevice, |
| ); |
| return path != null ? PickedFile(path) : null; |
| } |
| |
| Future<String?> _getVideoPath({ |
| required ImageSource source, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| Duration? maxDuration, |
| }) { |
| return _channel.invokeMethod<String>( |
| 'pickVideo', |
| <String, dynamic>{ |
| 'source': source.index, |
| 'maxDuration': maxDuration?.inSeconds, |
| 'cameraDevice': preferredCameraDevice.index |
| }, |
| ); |
| } |
| |
| @override |
| Future<LostData> retrieveLostData() async { |
| final Map<String, dynamic>? result = |
| await _channel.invokeMapMethod<String, dynamic>('retrieve'); |
| |
| if (result == null) { |
| return LostData.empty(); |
| } |
| |
| assert(result.containsKey('path') != result.containsKey('errorCode')); |
| |
| final String? type = result['type']; |
| assert(type == kTypeImage || type == kTypeVideo); |
| |
| RetrieveType? retrieveType; |
| if (type == kTypeImage) { |
| retrieveType = RetrieveType.image; |
| } else if (type == kTypeVideo) { |
| retrieveType = RetrieveType.video; |
| } |
| |
| PlatformException? exception; |
| if (result.containsKey('errorCode')) { |
| exception = PlatformException( |
| code: result['errorCode'], message: result['errorMessage']); |
| } |
| |
| final String? path = result['path']; |
| |
| return LostData( |
| file: path != null ? PickedFile(path) : null, |
| exception: exception, |
| type: retrieveType, |
| ); |
| } |
| |
| @override |
| Future<XFile?> getImage({ |
| required ImageSource source, |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| }) async { |
| String? path = await _getImagePath( |
| source: source, |
| maxWidth: maxWidth, |
| maxHeight: maxHeight, |
| imageQuality: imageQuality, |
| preferredCameraDevice: preferredCameraDevice, |
| ); |
| return path != null ? XFile(path) : null; |
| } |
| |
| @override |
| Future<List<XFile>?> getMultiImage({ |
| double? maxWidth, |
| double? maxHeight, |
| int? imageQuality, |
| }) async { |
| final List<dynamic>? paths = await _getMultiImagePath( |
| maxWidth: maxWidth, |
| maxHeight: maxHeight, |
| imageQuality: imageQuality, |
| ); |
| if (paths == null) return null; |
| |
| return paths.map((path) => XFile(path)).toList(); |
| } |
| |
| @override |
| Future<XFile?> getVideo({ |
| required ImageSource source, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| Duration? maxDuration, |
| }) async { |
| final String? path = await _getVideoPath( |
| source: source, |
| maxDuration: maxDuration, |
| preferredCameraDevice: preferredCameraDevice, |
| ); |
| return path != null ? XFile(path) : null; |
| } |
| |
| @override |
| Future<LostDataResponse> getLostData() async { |
| List<XFile>? pickedFileList; |
| |
| Map<String, dynamic>? result = |
| await _channel.invokeMapMethod<String, dynamic>('retrieve'); |
| |
| if (result == null) { |
| return LostDataResponse.empty(); |
| } |
| |
| assert(result.containsKey('path') != result.containsKey('errorCode')); |
| |
| final String? type = result['type']; |
| assert(type == kTypeImage || type == kTypeVideo); |
| |
| RetrieveType? retrieveType; |
| if (type == kTypeImage) { |
| retrieveType = RetrieveType.image; |
| } else if (type == kTypeVideo) { |
| retrieveType = RetrieveType.video; |
| } |
| |
| PlatformException? exception; |
| if (result.containsKey('errorCode')) { |
| exception = PlatformException( |
| code: result['errorCode'], message: result['errorMessage']); |
| } |
| |
| final String? path = result['path']; |
| |
| final pathList = result['pathList']; |
| if (pathList != null) { |
| pickedFileList = []; |
| for (String path in pathList) { |
| pickedFileList.add(XFile(path)); |
| } |
| } |
| |
| return LostDataResponse( |
| file: path != null ? XFile(path) : null, |
| exception: exception, |
| type: retrieveType, |
| files: pickedFileList, |
| ); |
| } |
| } |