@@ -38,11 +38,75 @@ enum FItemDivider {
3838
3939}
4040
41- /// An [FItemData ] is used to provide data about the item's position in the current nesting level, i.e. [FTileGroup] .
41+ /// An [FInheritedItemData ] is used to provide data about the item's position in the current nesting level, i.e. [FTileGroup] .
4242///
4343/// Users that wish to create their own custom group should pass additional data to the children using a separate
4444/// inherited widget.
45- final class FItemData extends InheritedWidget {
45+ final class FInheritedItemData extends InheritedWidget {
46+ /// Returns the [FItemData] in the given [context] .
47+ static FItemData ? maybeOf (BuildContext context) =>
48+ context.dependOnInheritedWidgetOfExactType <FInheritedItemData >()? .data;
49+
50+ /// The item's properties.
51+ final FItemData ? data;
52+
53+ /// Creates a [FInheritedItemData] .
54+ const FInheritedItemData ({required super .child, this .data, super .key});
55+
56+ /// Creates a [FInheritedItemData] that merges the given fields with the current [FInheritedItemData] .
57+ static Widget merge ({
58+ required bool last,
59+ required Widget child,
60+ FItemStyle ? style,
61+ double ? spacing,
62+ FItemDivider ? divider,
63+ FWidgetStateMap <Color >? dividerColor,
64+ double ? dividerWidth,
65+ bool ? enabled,
66+ int ? index,
67+ }) => Builder (
68+ builder: (context) {
69+ final parent = maybeOf (context);
70+ final globalLast = last && (parent? .globalLast ?? true );
71+
72+ return FInheritedItemData (
73+ data: FItemData (
74+ style: style ?? parent? .style,
75+ spacing: max (spacing ?? 0 , parent? .spacing ?? 0 ),
76+ dividerColor: dividerColor ?? parent? .dividerColor ?? FWidgetStateMap .all (Colors .transparent),
77+ dividerWidth: dividerWidth ?? parent? .dividerWidth ?? 0 ,
78+ divider: switch ((last, globalLast)) {
79+ // The first/middle items of a group.
80+ (false , false ) => divider ?? FItemDivider .none,
81+ // Last of a group which itself isn't the last.
82+ // propagatedLast can only be false if parent?.last is false since last must always be true.
83+ // Hence, parent!.divider can never be null.
84+ (true , false ) => parent! .divider,
85+ // The last item in the last group.
86+ (_, true ) => FItemDivider .none,
87+ },
88+ enabled: enabled ?? parent? .enabled ?? true ,
89+ index: index ?? parent? .index ?? 0 ,
90+ last: last,
91+ globalLast: globalLast,
92+ ),
93+ child: child,
94+ );
95+ },
96+ );
97+
98+ @override
99+ bool updateShouldNotify (FInheritedItemData old) => data != old.data;
100+
101+ @override
102+ void debugFillProperties (DiagnosticPropertiesBuilder properties) {
103+ super .debugFillProperties (properties);
104+ properties.add (DiagnosticsProperty ('data' , data));
105+ }
106+ }
107+
108+ /// The item's data.
109+ final class FItemData with Diagnosticable {
46110 /// The item's style.
47111final FItemStyle ? style;
48112
@@ -70,91 +134,19 @@ final class FItemData extends InheritedWidget {
70134 /// True if the item is the last item across all levels.
71135final bool globalLast;
72136
73- /// Creates a [FItemData] .
137+ /// Creates a new [FItemData] .
74138const FItemData ({
75- required this .style,
76- required this .spacing,
77- required this .dividerColor,
78- required this .dividerWidth,
79- required this .divider,
80- required this .enabled,
81- required this .index,
82- required this .last,
83- required this .globalLast,
84- required super .child,
85- super .key,
139+ this .style,
140+ this .spacing = 0 ,
141+ this .dividerColor = const FWidgetStateMap ({WidgetState .any: Colors .transparent}),
142+ this .dividerWidth = 0 ,
143+ this .divider = FItemDivider .none,
144+ this .enabled = true ,
145+ this .index = 0 ,
146+ this .last = true ,
147+ this .globalLast = true ,
86148 });
87149
88- /// Creates a [FItemData] that merges the given fields with the current [FItemData] .
89- static Widget merge ({
90- required bool last,
91- required Widget child,
92- FItemStyle ? style,
93- double ? spacing,
94- FItemDivider ? divider,
95- FWidgetStateMap <Color >? dividerColor,
96- double ? dividerWidth,
97- bool ? enabled,
98- int ? index,
99- }) => Builder (
100- builder: (context) {
101- final parent = context.dependOnInheritedWidgetOfExactType <FItemData >();
102- final globalLast = last && (parent? .globalLast ?? true );
103-
104- return FItemData (
105- style: style ?? parent? .style,
106- spacing: max (spacing ?? 0 , parent? .spacing ?? 0 ),
107- dividerColor: dividerColor ?? parent? .dividerColor ?? FWidgetStateMap .all (Colors .transparent),
108- dividerWidth: dividerWidth ?? parent? .dividerWidth ?? 0 ,
109- divider: switch ((last, globalLast)) {
110- // The first/middle items of a group.
111- (false , false ) => divider ?? FItemDivider .none,
112- // Last of a group which itself isn't the last.
113- // propagatedLast can only be false if parent?.last is false since last must always be true.
114- // Hence, parent!.divider can never be null.
115- (true , false ) => parent! .divider,
116- // The last item in the last group.
117- (_, true ) => FItemDivider .none,
118- },
119- enabled: enabled ?? parent? .enabled ?? true ,
120- index: index ?? parent? .index ?? 0 ,
121- last: last,
122- globalLast: globalLast,
123- child: child,
124- );
125- },
126- );
127-
128- /// Returns the [FItemData] in the given [context] .
129- static FItemData ? maybeOf (BuildContext context) => context.dependOnInheritedWidgetOfExactType <FItemData >();
130-
131- /// Returns the [FItemData] in the given [context] , or a default [FItemData] if none is found.
132- factory FItemData .of (BuildContext context) =>
133- maybeOf (context) ??
134- FItemData (
135- style: null ,
136- spacing: 0 ,
137- dividerColor: FWidgetStateMap .all (Colors .transparent),
138- dividerWidth: 0 ,
139- divider: FItemDivider .none,
140- enabled: true ,
141- index: 0 ,
142- last: true ,
143- globalLast: true ,
144- child: const SizedBox (),
145- );
146-
147- @override
148- bool updateShouldNotify (FItemData old) =>
149- style != old.style ||
150- dividerColor != old.dividerColor ||
151- dividerWidth != old.dividerWidth ||
152- divider != old.divider ||
153- enabled != old.enabled ||
154- index != old.index ||
155- last != old.last ||
156- globalLast != old.globalLast;
157-
158150 @override
159151 void debugFillProperties (DiagnosticPropertiesBuilder properties) {
160152 super .debugFillProperties (properties);
@@ -169,4 +161,23 @@ final class FItemData extends InheritedWidget {
169161 ..add (FlagProperty ('last' , value: last, ifTrue: 'last' ))
170162 ..add (FlagProperty ('globalLast' , value: globalLast, ifTrue: 'globalLast' ));
171163 }
164+
165+ @override
166+ bool operator == (Object other) =>
167+ identical (this , other) ||
168+ other is FItemData &&
169+ runtimeType == other.runtimeType &&
170+ style == other.style &&
171+ spacing == other.spacing &&
172+ dividerColor == other.dividerColor &&
173+ dividerWidth == other.dividerWidth &&
174+ divider == other.divider &&
175+ enabled == other.enabled &&
176+ index == other.index &&
177+ last == other.last &&
178+ globalLast == other.globalLast;
179+
180+ @override
181+ int get hashCode =>
182+ Object .hash (style, spacing, dividerColor, dividerWidth, divider, enabled, index, last, globalLast);
172183}
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