Feat/gh 25/images form #62
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| import 'dart:typed_data'; | ||
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| import 'package:collaction_cms/domain/core/value_validators.dart'; | ||
| import 'package:collaction_cms/presentation/shared/form/form_header.dart'; | ||
| import 'package:collaction_cms/presentation/shared/form/image_field.dart'; | ||
| import 'package:flutter/widgets.dart'; | ||
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|
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| class CrowdActionImagesForm extends StatefulWidget { | ||
| final double width; | ||
| final bool buttonTriggered; | ||
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| const CrowdActionImagesForm({ | ||
| super.key, | ||
| this.width = double.infinity, | ||
| this.buttonTriggered = false, | ||
| }); | ||
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| @override | ||
| State<CrowdActionImagesForm> createState() => _CrowdActionImagesFormState(); | ||
| } | ||
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| class _CrowdActionImagesFormState extends State<CrowdActionImagesForm> { | ||
| Uint8List? cardImage; | ||
| Uint8List? bannerImage; | ||
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| @override | ||
| Widget build(BuildContext context) { | ||
| return Container( | ||
| width: widget.width, | ||
| padding: const EdgeInsets.all(10), | ||
| child: Column( | ||
| children: [ | ||
| const FormHeader(title: "Images"), | ||
| const SizedBox(height: 18), | ||
| Container( | ||
| padding: const EdgeInsets.symmetric(horizontal: 23), | ||
| child: Column( | ||
| children: [ | ||
| ImageField( | ||
| label: "Card", | ||
| buttonTriggered: widget.buttonTriggered, | ||
| validationCallback: validateEmptyField, | ||
| callback: (Uint8List image) => cardImage = image, | ||
| imageSize: const Size(16, 9), | ||
| ), | ||
| ImageField( | ||
| label: "Banner", | ||
| buttonTriggered: widget.buttonTriggered, | ||
| validationCallback: validateEmptyField, | ||
| callback: (Uint8List image) => bannerImage = image, | ||
| imageSize: const Size(16, 9), | ||
| ), | ||
| ], | ||
| ), | ||
| ) | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| import 'dart:typed_data'; | ||
|
|
||
| import 'package:collaction_cms/domain/core/value_validators.dart'; | ||
| import 'package:collaction_cms/presentation/shared/form/form_field.dart'; | ||
| import 'package:collaction_cms/presentation/shared/form/util/image_cropper_dialog.dart'; | ||
| import 'package:collaction_cms/presentation/theme/constants.dart'; | ||
| import 'package:dotted_border/dotted_border.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_dropzone/flutter_dropzone.dart'; | ||
|
|
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| class ImageField extends StatefulWidget { | ||
| final String label; | ||
| final String caption; | ||
| final double width; | ||
| final Size? imageSize; | ||
| final Function? callback; | ||
| final Function? validationCallback; | ||
| final bool readOnly; | ||
| final bool buttonTriggered; | ||
|
|
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| const ImageField({ | ||
| super.key, | ||
| required this.label, | ||
| this.caption = "Image should be a PNG or JPEG file.", | ||
| this.width = double.infinity, | ||
| this.imageSize, | ||
| this.callback, | ||
| this.validationCallback, | ||
| this.readOnly = false, | ||
| this.buttonTriggered = false, | ||
| }); | ||
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| @override | ||
| State<ImageField> createState() => _ImageFieldState(); | ||
| } | ||
|
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| class _ImageFieldState extends State<ImageField> { | ||
| final List<String> mime = [ | ||
| 'image/jpeg', | ||
| 'image/png', | ||
| ]; | ||
| late DropzoneViewController _controller; | ||
| late ValidationOutput _validationOutput; | ||
| bool _highlighted = false; | ||
| bool _loading = false; | ||
| Uint8List? _image; | ||
| String message = "Drag and drop your files here or choose file"; | ||
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| @override | ||
| Widget build(BuildContext context) { | ||
| return CollActionFormField( | ||
| readOnly: widget.readOnly, | ||
| error: widget.buttonTriggered && _validationOutput.error | ||
| ? _validationOutput.output | ||
| : null, | ||
| label: widget.label, | ||
| caption: widget.caption, | ||
| child: DottedBorder( | ||
| borderType: BorderType.RRect, | ||
| radius: const Radius.circular(10), | ||
| color: const Color(0x80707070), | ||
| dashPattern: const [4, 4], | ||
| strokeWidth: 1, | ||
| child: ClipRRect( | ||
| borderRadius: const BorderRadius.all(Radius.circular(10)), | ||
| child: Container( | ||
| width: widget.width, | ||
| height: 87, | ||
| color: _highlighted ? const Color(0x20A0A0A0) : Colors.transparent, | ||
| child: Stack( | ||
| children: [ | ||
| DropzoneView( | ||
| operation: DragOperation.copy, | ||
| cursor: _loading ? null : CursorType.grab, | ||
| onCreated: (ctrl) => _controller = ctrl, | ||
| onHover: () => setState( | ||
| () => _highlighted = true, | ||
| ), | ||
| onLeave: () => setState( | ||
| () => _highlighted = false, | ||
| ), | ||
| onDrop: (event) async { | ||
| await _processUploadedImage(event); | ||
| setState(() { | ||
| _loading = false; | ||
| }); | ||
| }, | ||
| ), | ||
| GestureDetector( | ||
| onTap: () async { | ||
| var files = await _controller.pickFiles(mime: mime); | ||
| if (files.isNotEmpty) { | ||
| await _processUploadedImage(files[0]); | ||
| } | ||
| setState(() { | ||
| _loading = false; | ||
| }); | ||
| }, | ||
| behavior: HitTestBehavior.translucent, | ||
| child: Center( | ||
| child: _loading | ||
| ? const CircularProgressIndicator( | ||
| color: kBlackPrimary200, | ||
| ) | ||
| : Column( | ||
| mainAxisAlignment: MainAxisAlignment.center, | ||
| children: [ | ||
| const Icon( | ||
| Icons.file_upload_outlined, | ||
| color: kBlackPrimary300, | ||
| ), | ||
| const SizedBox(height: 12), | ||
| Text( | ||
| message, | ||
| style: CollactionTextStyles.body14, | ||
| textAlign: TextAlign.center, | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
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| bool _validateExtension(String s) { | ||
| return s.toLowerCase().endsWith("png") || | ||
| s.toLowerCase().endsWith("jpg") || | ||
| s.toLowerCase().endsWith("jpeg"); | ||
| } | ||
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| void _validate() { | ||
| widget.validationCallback == null | ||
| ? _validationOutput = ValidationOutput(error: false) | ||
| : _validationOutput = widget.validationCallback!(_image); | ||
| widget.callback == null | ||
| ? null | ||
| : widget.callback!(_validationOutput.error ? null : _image); | ||
|
There was a problem hiding this comment. I think that There was a problem hiding this comment. Agreed, will make the change |
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| } | ||
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| Future<void> _processUploadedImage(dynamic file) async { | ||
| setState(() { | ||
| _highlighted = false; | ||
| _loading = true; | ||
| }); | ||
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| if (!_validateExtension(file.name)) { | ||
| message = "File type invalid."; | ||
| return; | ||
| } | ||
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| _image = await _controller.getFileData(file); | ||
| if (!mounted) { | ||
| message = "Image could not be loaded."; | ||
| return; | ||
| } | ||
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| if (widget.imageSize != null) { | ||
| _image = await showImageCropperModal( | ||
| context, | ||
| widget.imageSize!, | ||
| _image!, | ||
| ); | ||
| } | ||
|
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| if (_image != null) { | ||
| _validate(); | ||
| message = "Uploaded image: ${file.name}"; | ||
| } | ||
| } | ||
| } | ||
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If you trigger the button "Save CrowdAction" and the fields are empty a "late initialization error" is produced. This is because the ValidationOutput has not been initialized. One way to fix this is by adding a validation in
initStatelike this: