706 lines
22 KiB
Dart
706 lines
22 KiB
Dart
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_markdown_plus_latex/flutter_markdown_plus_latex.dart';
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import 'package:flutter_markdown_plus/flutter_markdown_plus.dart';
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import 'package:markdown/markdown.dart' as markdown;
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import '../formula_models.dart';
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import '../corpus.dart';
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import 'formula_screen.dart';
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import 'unit_dropdown.dart';
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/// A screen for editing a Formula's properties including name, description,
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/// input/output variables, and d4rt code.
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class FormulaEditor extends StatefulWidget {
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final Formula formula;
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final Corpus corpus;
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const FormulaEditor({
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super.key,
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required this.formula,
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required this.corpus,
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});
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@override
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State<FormulaEditor> createState() => _FormulaEditorState();
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}
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class _FormulaEditorState extends State<FormulaEditor> {
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final _formKey = GlobalKey<FormState>();
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late TextEditingController _nameController;
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late TextEditingController _descriptionController;
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late TextEditingController _d4rtCodeController;
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// Track input variables
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final List<_InputVariableRowData> _inputVariables = [];
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// Output variable
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late _OutputVariableRowData _outputVariable;
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bool _isPreviewVisible = false;
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@override
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void initState() {
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super.initState();
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_nameController = TextEditingController(text: widget.formula.name);
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_descriptionController = TextEditingController(text: widget.formula.description ?? '');
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_d4rtCodeController = TextEditingController(text: widget.formula.d4rtCode);
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// Initialize input variables
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for (final input in widget.formula.input) {
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_inputVariables.add(_InputVariableRowData(
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nameController: TextEditingController(text: input.name),
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unit: input.unit,
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values: input.values != null ? List.from(input.values!) : null,
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));
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}
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// Initialize output variable
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_outputVariable = _OutputVariableRowData(
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nameController: TextEditingController(text: widget.formula.output.name),
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unit: widget.formula.output.unit,
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);
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}
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@override
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void dispose() {
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_nameController.dispose();
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_descriptionController.dispose();
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_d4rtCodeController.dispose();
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for (final variable in _inputVariables) {
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variable.nameController.dispose();
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}
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_outputVariable.nameController.dispose();
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super.dispose();
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}
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void _addInputVariable() {
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setState(() {
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_inputVariables.add(_InputVariableRowData(
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nameController: TextEditingController(text: 'var${_inputVariables.length + 1}'),
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unit: null,
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values: null,
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));
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});
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}
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void _removeInputVariable(int index) {
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setState(() {
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_inputVariables.removeAt(index);
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});
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}
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void _showPreview() {
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setState(() {
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_isPreviewVisible = true;
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});
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}
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void _hidePreview() {
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setState(() {
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_isPreviewVisible = false;
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});
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}
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void _testFormula() {
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// Validate the formula before testing
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if (!_validateFormula()) {
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return;
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}
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final formula = _buildFormula();
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if (formula == null) return;
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (context) => FormulaScreen(
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formula: formula,
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corpus: widget.corpus,
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),
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),
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);
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}
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bool _validateFormula() {
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// Validate name
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if (_nameController.text.trim().isEmpty) {
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_showErrorDialog('Formula name cannot be empty');
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return false;
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}
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// Validate output name
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if (_outputVariable.nameController.text.trim().isEmpty) {
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_showErrorDialog('Output variable name cannot be empty');
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return false;
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}
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// Validate input variable names
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for (final variable in _inputVariables) {
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if (variable.nameController.text.trim().isEmpty) {
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_showErrorDialog('Input variable names cannot be empty');
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return false;
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}
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}
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// Validate d4rt code
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if (_d4rtCodeController.text.trim().isEmpty) {
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_showErrorDialog('D4RT code cannot be empty');
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return false;
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}
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return true;
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}
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Formula? _buildFormula() {
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try {
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final input = <VariableSpec>[];
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for (final variable in _inputVariables) {
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input.add(VariableSpec(
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name: variable.nameController.text.trim(),
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unit: variable.unit,
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values: variable.values,
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));
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}
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final output = VariableSpec(
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name: _outputVariable.nameController.text.trim(),
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unit: _outputVariable.unit,
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);
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return Formula(
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name: _nameController.text.trim(),
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description: _descriptionController.text.isEmpty ? null : _descriptionController.text,
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input: input,
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output: output,
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d4rtCode: _d4rtCodeController.text,
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tags: widget.formula.tags, // Preserve existing tags
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);
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} catch (e) {
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_showErrorDialog('Error building formula: $e');
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return null;
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}
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}
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void _saveFormula() {
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if (!_validateFormula()) {
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return;
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}
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final formula = _buildFormula();
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if (formula == null) return;
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// For now, just show a success message
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// In a real implementation, this would save to database
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('Formula "${formula.name}" saved successfully!'),
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backgroundColor: Theme.of(context).colorScheme.primary,
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),
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);
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}
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void _showErrorDialog(String message) {
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showDialog(
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context: context,
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builder: (BuildContext context) {
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return AlertDialog(
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title: const Text('Error'),
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content: Text(message),
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actions: <Widget>[
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TextButton(
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onPressed: () {
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Navigator.of(context).pop();
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},
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child: const Text('OK'),
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),
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],
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);
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},
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);
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Edit Formula'),
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actions: [
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IconButton(
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icon: const Icon(Icons.play_arrow),
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onPressed: _testFormula,
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tooltip: 'Test Formula',
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),
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IconButton(
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icon: const Icon(Icons.save),
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onPressed: _saveFormula,
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tooltip: 'Save',
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),
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],
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),
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body: Form(
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key: _formKey,
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: ListView(
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children: [
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_buildNameSection(),
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const SizedBox(height: 16),
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_buildDescriptionSection(),
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const SizedBox(height: 16),
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_buildInputVariablesSection(),
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const SizedBox(height: 16),
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_buildOutputVariableSection(),
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const SizedBox(height: 16),
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_buildD4rtCodeSection(),
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const SizedBox(height: 32),
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],
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),
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),
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),
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);
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}
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Widget _buildNameSection() {
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return TextFormField(
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controller: _nameController,
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decoration: const InputDecoration(
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labelText: 'Formula Name',
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border: OutlineInputBorder(),
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prefixIcon: Icon(Icons.title),
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),
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validator: (value) {
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if (value == null || value.trim().isEmpty) {
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return 'Name is required';
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}
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return null;
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},
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);
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}
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Widget _buildDescriptionSection() {
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return Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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const Text(
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'Description (Markdown)',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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if (_isPreviewVisible)
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TextButton.icon(
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icon: const Icon(Icons.visibility_off),
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label: const Text('Hide Preview'),
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onPressed: _hidePreview,
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)
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else
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TextButton.icon(
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icon: const Icon(Icons.visibility),
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label: const Text('Preview'),
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onPressed: _showPreview,
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),
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],
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),
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],
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),
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const SizedBox(height: 8),
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if (_isPreviewVisible) ...[
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Container(
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padding: const EdgeInsets.all(8),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surfaceVariant,
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borderRadius: BorderRadius.circular(8),
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),
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child: Markdown(
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data: _descriptionController.text,
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shrinkWrap: true,
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builders: {
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'latex': LatexElementBuilder(),
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},
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extensionSet: markdown.ExtensionSet(
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[LatexBlockSyntax()],
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[LatexInlineSyntax()],
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),
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),
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),
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const SizedBox(height: 16),
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],
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TextFormField(
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controller: _descriptionController,
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decoration: const InputDecoration(
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hintText: 'Enter formula description (supports Markdown and LaTeX)',
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border: OutlineInputBorder(),
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),
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maxLines: 5,
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),
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],
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),
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),
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);
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}
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Widget _buildInputVariablesSection() {
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return Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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'Input Variables',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 8),
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..._inputVariables.asMap().entries.map((entry) {
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final index = entry.key;
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final variable = entry.value;
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return _buildInputVariableRow(index, variable);
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}).toList(),
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const SizedBox(height: 8),
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ElevatedButton.icon(
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icon: const Icon(Icons.add),
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label: const Text('Add Input Variable'),
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onPressed: _addInputVariable,
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),
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],
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),
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),
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);
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}
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Widget _buildInputVariableRow(int index, _InputVariableRowData variable) {
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return Card(
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margin: const EdgeInsets.only(bottom: 8),
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child: Padding(
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padding: const EdgeInsets.all(8.0),
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child: Column(
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children: [
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Row(
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children: [
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Expanded(
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flex: 2,
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child: TextFormField(
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controller: variable.nameController,
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decoration: const InputDecoration(
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labelText: 'Name',
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border: OutlineInputBorder(),
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),
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text('Base Unit', style: TextStyle(fontSize: 12)),
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DropdownButtonFormField<String?>(
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value: _getBaseUnit(variable.unit),
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 0),
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),
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items: [
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const DropdownMenuItem<String?>(
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value: null,
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child: Text('None', style: TextStyle(fontSize: 14)),
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),
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..._getAllBaseUnits().map((baseUnit) {
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||
|
|
return DropdownMenuItem<String?>(
|
||
|
|
value: baseUnit,
|
||
|
|
child: Text(baseUnit, style: const TextStyle(fontSize: 14)),
|
||
|
|
);
|
||
|
|
}).toList(),
|
||
|
|
],
|
||
|
|
onChanged: (baseUnit) {
|
||
|
|
setState(() {
|
||
|
|
variable.unit = baseUnit;
|
||
|
|
});
|
||
|
|
},
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(width: 8),
|
||
|
|
Expanded(
|
||
|
|
child: Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
const Text('Derived Unit', style: TextStyle(fontSize: 12)),
|
||
|
|
DropdownButtonFormField<String?>(
|
||
|
|
value: variable.unit,
|
||
|
|
decoration: const InputDecoration(
|
||
|
|
border: OutlineInputBorder(),
|
||
|
|
contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 0),
|
||
|
|
),
|
||
|
|
items: [
|
||
|
|
const DropdownMenuItem<String?>(
|
||
|
|
value: null,
|
||
|
|
child: Text('None', style: TextStyle(fontSize: 14)),
|
||
|
|
),
|
||
|
|
..._getDerivedUnits(variable.unit).map((unit) {
|
||
|
|
final unitSpec = widget.corpus.getUnit(unit);
|
||
|
|
return DropdownMenuItem<String?>(
|
||
|
|
value: unit,
|
||
|
|
child: Text('${unitSpec.symbol} - ${unit}',
|
||
|
|
style: const TextStyle(fontSize: 14),
|
||
|
|
overflow: TextOverflow.ellipsis,
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}).toList(),
|
||
|
|
],
|
||
|
|
onChanged: (unit) {
|
||
|
|
setState(() {
|
||
|
|
variable.unit = unit;
|
||
|
|
});
|
||
|
|
},
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(width: 8),
|
||
|
|
IconButton(
|
||
|
|
icon: const Icon(Icons.delete, color: Colors.red),
|
||
|
|
onPressed: () => _removeInputVariable(index),
|
||
|
|
tooltip: 'Delete variable',
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
Widget _buildOutputVariableSection() {
|
||
|
|
return Card(
|
||
|
|
child: Padding(
|
||
|
|
padding: const EdgeInsets.all(16.0),
|
||
|
|
child: Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
const Text(
|
||
|
|
'Output Variable',
|
||
|
|
style: TextStyle(
|
||
|
|
fontSize: 16,
|
||
|
|
fontWeight: FontWeight.bold,
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(height: 8),
|
||
|
|
Row(
|
||
|
|
children: [
|
||
|
|
Expanded(
|
||
|
|
flex: 2,
|
||
|
|
child: TextFormField(
|
||
|
|
controller: _outputVariable.nameController,
|
||
|
|
decoration: const InputDecoration(
|
||
|
|
labelText: 'Name',
|
||
|
|
border: OutlineInputBorder(),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(width: 8),
|
||
|
|
Expanded(
|
||
|
|
child: Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
const Text('Base Unit', style: TextStyle(fontSize: 12)),
|
||
|
|
DropdownButtonFormField<String?>(
|
||
|
|
value: _getBaseUnit(_outputVariable.unit),
|
||
|
|
decoration: const InputDecoration(
|
||
|
|
border: OutlineInputBorder(),
|
||
|
|
contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 0),
|
||
|
|
),
|
||
|
|
items: [
|
||
|
|
const DropdownMenuItem<String?>(
|
||
|
|
value: null,
|
||
|
|
child: Text('None', style: TextStyle(fontSize: 14)),
|
||
|
|
),
|
||
|
|
..._getAllBaseUnits().map((baseUnit) {
|
||
|
|
return DropdownMenuItem<String?>(
|
||
|
|
value: baseUnit,
|
||
|
|
child: Text(baseUnit, style: const TextStyle(fontSize: 14)),
|
||
|
|
);
|
||
|
|
}).toList(),
|
||
|
|
],
|
||
|
|
onChanged: (baseUnit) {
|
||
|
|
setState(() {
|
||
|
|
_outputVariable.unit = baseUnit;
|
||
|
|
});
|
||
|
|
},
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(width: 8),
|
||
|
|
Expanded(
|
||
|
|
child: Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
const Text('Derived Unit', style: TextStyle(fontSize: 12)),
|
||
|
|
DropdownButtonFormField<String?>(
|
||
|
|
value: _outputVariable.unit,
|
||
|
|
decoration: const InputDecoration(
|
||
|
|
border: OutlineInputBorder(),
|
||
|
|
contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 0),
|
||
|
|
),
|
||
|
|
items: [
|
||
|
|
const DropdownMenuItem<String?>(
|
||
|
|
value: null,
|
||
|
|
child: Text('None', style: TextStyle(fontSize: 14)),
|
||
|
|
),
|
||
|
|
..._getDerivedUnits(_outputVariable.unit).map((unit) {
|
||
|
|
final unitSpec = widget.corpus.getUnit(unit);
|
||
|
|
return DropdownMenuItem<String?>(
|
||
|
|
value: unit,
|
||
|
|
child: Text('${unitSpec.symbol} - ${unit}',
|
||
|
|
style: const TextStyle(fontSize: 14),
|
||
|
|
overflow: TextOverflow.ellipsis,
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}).toList(),
|
||
|
|
],
|
||
|
|
onChanged: (unit) {
|
||
|
|
setState(() {
|
||
|
|
_outputVariable.unit = unit;
|
||
|
|
});
|
||
|
|
},
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
Widget _buildD4rtCodeSection() {
|
||
|
|
return Card(
|
||
|
|
child: Padding(
|
||
|
|
padding: const EdgeInsets.all(16.0),
|
||
|
|
child: Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
const Text(
|
||
|
|
'D4RT Code',
|
||
|
|
style: TextStyle(
|
||
|
|
fontSize: 16,
|
||
|
|
fontWeight: FontWeight.bold,
|
||
|
|
),
|
||
|
|
),
|
||
|
|
const SizedBox(height: 8),
|
||
|
|
Container(
|
||
|
|
decoration: BoxDecoration(
|
||
|
|
border: Border.all(color: Theme.of(context).dividerColor),
|
||
|
|
borderRadius: BorderRadius.circular(4),
|
||
|
|
),
|
||
|
|
child: Column(
|
||
|
|
children: [
|
||
|
|
Container(
|
||
|
|
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
|
||
|
|
decoration: BoxDecoration(
|
||
|
|
color: Theme.of(context).colorScheme.surfaceVariant,
|
||
|
|
borderRadius: const BorderRadius.only(
|
||
|
|
topLeft: Radius.circular(4),
|
||
|
|
topRight: Radius.circular(4),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
child: Row(
|
||
|
|
children: [
|
||
|
|
Icon(Icons.code, size: 16, color: Theme.of(context).colorScheme.primary),
|
||
|
|
const SizedBox(width: 8),
|
||
|
|
Text(
|
||
|
|
'Dart Syntax',
|
||
|
|
style: TextStyle(
|
||
|
|
fontSize: 12,
|
||
|
|
fontWeight: FontWeight.bold,
|
||
|
|
color: Theme.of(context).colorScheme.primary,
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
TextFormField(
|
||
|
|
controller: _d4rtCodeController,
|
||
|
|
decoration: const InputDecoration(
|
||
|
|
hintText: 'Enter D4RT/Dart code here',
|
||
|
|
border: InputBorder.none,
|
||
|
|
contentPadding: EdgeInsets.all(12),
|
||
|
|
),
|
||
|
|
maxLines: 10,
|
||
|
|
style: const TextStyle(
|
||
|
|
fontFamily: 'monospace',
|
||
|
|
fontSize: 14,
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Helper methods for unit management
|
||
|
|
String? _getBaseUnit(String? unit) {
|
||
|
|
if (unit == null) return null;
|
||
|
|
try {
|
||
|
|
return widget.corpus.getUnit(unit).baseUnit;
|
||
|
|
} catch (e) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
List<String> _getAllBaseUnits() {
|
||
|
|
final baseUnits = <String>{};
|
||
|
|
for (final unit in widget.corpus.allUnits()) {
|
||
|
|
baseUnits.add(unit.baseUnit);
|
||
|
|
}
|
||
|
|
return baseUnits.toList()..sort();
|
||
|
|
}
|
||
|
|
|
||
|
|
List<String> _getDerivedUnits(String? baseUnit) {
|
||
|
|
if (baseUnit == null) return [];
|
||
|
|
return widget.corpus.unitsOfSameMagnitude(baseUnit)..sort();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Data classes to track variable state
|
||
|
|
class _InputVariableRowData {
|
||
|
|
final TextEditingController nameController;
|
||
|
|
String? unit;
|
||
|
|
List<dynamic>? values;
|
||
|
|
|
||
|
|
_InputVariableRowData({
|
||
|
|
required this.nameController,
|
||
|
|
this.unit,
|
||
|
|
this.values,
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
class _OutputVariableRowData {
|
||
|
|
final TextEditingController nameController;
|
||
|
|
String? unit;
|
||
|
|
|
||
|
|
_OutputVariableRowData({
|
||
|
|
required this.nameController,
|
||
|
|
this.unit,
|
||
|
|
});
|
||
|
|
}
|