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text_editor.dart
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text_editor.dart
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library text_editor;
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:text_editor/src/font_option_model.dart';
import 'package:text_editor/src/text_style_model.dart';
import 'package:text_editor/src/widget/color_palette.dart';
import 'package:text_editor/src/widget/font_family.dart';
import 'package:text_editor/src/widget/font_size.dart';
import 'package:text_editor/src/widget/font_option_switch.dart';
import 'package:text_editor/src/widget/text_alignment.dart';
/// Instagram like text editor
/// A flutter widget that edit text style and text alignment
///
/// You can pass your text style to the widget
/// and then get the edited text style
class TextEditor extends StatefulWidget {
/// After edit process completed, [onEditCompleted] callback will be called.
final void Function(TextStyle, TextAlign, String) onEditCompleted;
/// [onTextAlignChanged] will be called after [textAlingment] prop has changed
final ValueChanged<TextAlign> onTextAlignChanged;
/// [onTextStyleChanged] will be called after [textStyle] prop has changed
final ValueChanged<TextStyle> onTextStyleChanged;
/// [onTextChanged] will be called after [text] prop has changed
final ValueChanged<String> onTextChanged;
/// The text alignment
final TextAlign textAlingment;
/// The text style
final TextStyle textStyle;
/// Widget's background color
final Color backgroundColor;
/// Editor's font families
final List<String> fonts;
/// Editor's default text
final String text;
/// Decoration to customize the editor
final EditorDecoration decoration;
/// Create a [TextEditor] widget
///
/// [fonts] list of font families that you want to use in editor.
/// After edit process completed, [onEditCompleted] callback will be called
/// with new [textStyle], [textAlingment] and [text] value
TextEditor({
@required this.fonts,
@required this.onEditCompleted,
this.backgroundColor,
this.text = '',
this.textStyle,
this.textAlingment,
this.onTextAlignChanged,
this.onTextStyleChanged,
this.onTextChanged,
this.decoration,
});
@override
_TextEditorState createState() => _TextEditorState();
}
class _TextEditorState extends State<TextEditor> {
TextStyleModel _textStyleModel;
FontOptionModel _fontOptionModel;
Widget _doneButton;
@override
void initState() {
_textStyleModel = TextStyleModel(
widget.text,
widget.textStyle == null ? TextStyle() : widget.textStyle,
widget.textAlingment == null ? TextAlign.center : widget.textAlingment,
);
_fontOptionModel = FontOptionModel(_textStyleModel, widget.fonts);
// Initialize decorator
_doneButton = widget.decoration?.doneButton == null
? Text('Done', style: TextStyle(color: Colors.white))
: widget.decoration.doneButton;
super.initState();
}
void _editCompleteHandler() {
widget.onEditCompleted(
_textStyleModel.textStyle,
_textStyleModel.textAlign,
_textStyleModel.text,
);
}
@override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
ChangeNotifierProvider(create: (context) => _textStyleModel),
ChangeNotifierProvider(create: (context) => _fontOptionModel),
],
child: Container(
padding: EdgeInsets.only(right: 10, left: 10),
color: widget.backgroundColor,
child: Column(
children: [
Row(
children: [
Expanded(child: Container()),
Expanded(
flex: 3,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextAlignment(
left: widget.decoration?.alignment?.left,
center: widget.decoration?.alignment?.center,
right: widget.decoration?.alignment?.right,
),
SizedBox(width: 20),
FontOptionSwitch(
fontFamilySwitch: widget.decoration?.fontFamily,
colorPaletteSwitch: widget.decoration?.colorPalette,
),
// TODO: Add text background color
// SizedBox(width: 20),
// TextBackgroundColor(),
],
),
),
Expanded(
child: Align(
alignment: Alignment.centerRight,
child: GestureDetector(
onTap: _editCompleteHandler,
child: _doneButton,
),
),
),
],
),
Expanded(
child: Row(
children: [
FontSize(),
Expanded(
child: Container(
child: Center(
child: Consumer<TextStyleModel>(
builder: (context, textStyleModel, child) {
return TextField(
controller: TextEditingController()
..text = textStyleModel.text,
onChanged: (value) => textStyleModel.text = value,
maxLines: null,
keyboardType: TextInputType.multiline,
style: textStyleModel.textStyle,
textAlign: textStyleModel.textAlign,
autofocus: true,
cursorColor: Colors.white,
decoration: null,
);
},
),
),
),
),
],
),
),
Container(
margin: EdgeInsets.only(bottom: 5),
child: Consumer<FontOptionModel>(
builder: (context, model, child) =>
model.status == FontOptionStatus.fontFamily
? FontFamily(model.fonts)
: ColorPalette(),
),
),
],
),
),
);
}
}
/// Decoration to customize text alignment widgets' design.
///
/// Pass your custom widget to `left`, `right` and `center` to customize their design
class AlignmentDecoration {
/// Left alignment widget
final Widget left;
/// Center alignment widget
final Widget center;
/// Right alignment widget
final Widget right;
AlignmentDecoration({this.left, this.center, this.right});
}
/// Decoration to customize the editor
///
/// By using this class, you can customize the text editor's design
class EditorDecoration {
/// Done button widget
final Widget doneButton;
final AlignmentDecoration alignment;
/// Font family switch widget
final Widget fontFamily;
/// Color palette switch widget
final Widget colorPalette;
EditorDecoration({
this.doneButton,
this.alignment,
this.fontFamily,
this.colorPalette,
});
}