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Feat: custom leading builder (#2146)
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151 changes: 151 additions & 0 deletions
151
lib/src/editor/raw_editor/builders/leading_block_builder.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import '../../../document/attribute.dart'; | ||
| import '../../../document/nodes/node.dart'; | ||
| import '../../style_widgets/checkbox_point.dart'; | ||
|
|
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| typedef LeadingBlockNodeBuilder = Widget? Function(Node, LeadingConfigurations); | ||
|
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| /// This class contains all necessary values | ||
| /// to build the leading for lists and codeblocks | ||
| /// | ||
| /// If you want to customize the number point of the codeblock | ||
| /// please, take care about it, because the default | ||
| /// implementation uses the same leading of | ||
| /// ordered list to show lines with correct format | ||
| class LeadingConfigurations { | ||
| LeadingConfigurations({ | ||
| required this.attribute, | ||
| required this.indentLevelCounts, | ||
| required this.count, | ||
| required this.style, | ||
| required this.width, | ||
| required this.padding, | ||
| required this.value, | ||
| required this.onCheckboxTap, | ||
| required this.attrs, | ||
| this.withDot = true, | ||
| this.index, | ||
| this.lineSize, | ||
| this.enabled, | ||
| this.uiBuilder, | ||
| }); | ||
|
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| final Attribute attribute; | ||
| final Map<String, Attribute> attrs; | ||
| final bool withDot; | ||
| final Map<int, int> indentLevelCounts; | ||
| // if is a list that contains a number as its leading then this is non null | ||
| final int? index; | ||
| final int count; | ||
| final TextStyle? style; | ||
| final double? width; | ||
| final double? padding; | ||
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| // these values are used if the leading is from a check list | ||
| final QuillCheckboxBuilder? uiBuilder; | ||
| final double? lineSize; | ||
| final bool? enabled; | ||
| final bool value; | ||
| final void Function(bool) onCheckboxTap; | ||
|
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| String? get getIndexNumberByIndent { | ||
| if (index == null) return null; | ||
| var s = index.toString(); | ||
| var level = 0; | ||
| if (!attrs.containsKey(Attribute.indent.key) && indentLevelCounts.isEmpty) { | ||
| indentLevelCounts.clear(); | ||
| indentLevelCounts[0] = 1; | ||
| return s; | ||
| } | ||
| if (attrs.containsKey(Attribute.indent.key)) { | ||
| level = attrs[Attribute.indent.key]!.value; | ||
| } else if (!indentLevelCounts.containsKey(0)) { | ||
| // first level but is back from previous indent level | ||
| // supposed to be "2." | ||
| indentLevelCounts[0] = 1; | ||
| } | ||
| if (indentLevelCounts.containsKey(level + 1)) { | ||
| // last visited level is done, going up | ||
| indentLevelCounts.remove(level + 1); | ||
| } | ||
| final count = (indentLevelCounts[level] ?? 0) + 1; | ||
| indentLevelCounts[level] = count; | ||
|
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| s = count.toString(); | ||
| if (level % 3 == 1) { | ||
| // a. b. c. d. e. ... | ||
| s = _toExcelSheetColumnTitle(count); | ||
| } else if (level % 3 == 2) { | ||
| // i. ii. iii. ... | ||
| s = _intToRoman(count); | ||
| } | ||
| return s; | ||
| } | ||
|
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| String _toExcelSheetColumnTitle(int n) { | ||
| final result = StringBuffer(); | ||
| while (n > 0) { | ||
| n--; | ||
| result.write(String.fromCharCode((n % 26).floor() + 97)); | ||
| n = (n / 26).floor(); | ||
| } | ||
|
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| return result.toString().split('').reversed.join(); | ||
| } | ||
|
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| String _intToRoman(int input) { | ||
| var num = input; | ||
|
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| if (num < 0) { | ||
| return ''; | ||
| } else if (num == 0) { | ||
| return 'nulla'; | ||
| } | ||
|
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| final builder = StringBuffer(); | ||
| for (var a = 0; a < _arabianRomanNumbers.length; a++) { | ||
| final times = (num / _arabianRomanNumbers[a]) | ||
| .truncate(); // equals 1 only when arabianRomanNumbers[a] = num | ||
| // executes n times where n is the number of times you have to add | ||
| // the current roman number value to reach current num. | ||
| builder.write(_romanNumbers[a] * times); | ||
| num -= times * | ||
| _arabianRomanNumbers[ | ||
| a]; // subtract previous roman number value from num | ||
| } | ||
|
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| return builder.toString().toLowerCase(); | ||
| } | ||
| } | ||
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| const _arabianRomanNumbers = <int>[ | ||
| 1000, | ||
| 900, | ||
| 500, | ||
| 400, | ||
| 100, | ||
| 90, | ||
| 50, | ||
| 40, | ||
| 10, | ||
| 9, | ||
| 5, | ||
| 4, | ||
| 1 | ||
| ]; | ||
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| const _romanNumbers = <String>[ | ||
| 'M', | ||
| 'CM', | ||
| 'D', | ||
| 'CD', | ||
| 'C', | ||
| 'XC', | ||
| 'L', | ||
| 'XL', | ||
| 'X', | ||
| 'IX', | ||
| 'V', | ||
| 'IV', | ||
| 'I' | ||
| ]; |
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10 changes: 10 additions & 0 deletions
10
lib/src/editor/widgets/default_leading_components/bullet_point_leading.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import '../../raw_editor/builders/leading_block_builder.dart'; | ||
| import '../../style_widgets/style_widgets.dart'; | ||
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| Widget bulletPointLeading(LeadingConfigurations config) => | ||
| QuillEditorBulletPoint( | ||
| style: config.style!, | ||
| width: config.width!, | ||
| padding: config.padding!, | ||
| ); |
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