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Refactor theme management to use ValueListenableBuilder for effective theme updates

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Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>
This commit is contained in:
Hans Kokx
2025-07-01 16:56:30 +02:00
parent f8dcaf3c6c
commit b0c9fe7b98
3 changed files with 98 additions and 56 deletions
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lib/src/services/reactive_theme/reactive_theme_service.dart
+25
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@@ -66,6 +66,22 @@ class ArcaneReactiveTheme extends ArcaneService {
final ValueNotifier<ThemeData> _themeNotifier =
ValueNotifier<ThemeData>(ThemeData.light());
/// ValueListenable that rebuilds when the effective theme changes.
/// This includes theme mode changes and active theme data changes.
/// Use this for most UI components that need to react to theme changes.
ValueListenable<ThemeData> get effectiveThemeChanges =>
I._effectiveThemeNotifier;
final ValueNotifier<ThemeData> _effectiveThemeNotifier =
ValueNotifier<ThemeData>(ThemeData.light());
/// ValueListenable that notifies when the system theme following state changes.
ValueListenable<bool> get followingSystemThemeChanges =>
I._followingSystemThemeNotifier;
final ValueNotifier<bool> _followingSystemThemeNotifier =
ValueNotifier<bool>(false);
// ************************************************************************ //
// * MARK: Light/Dark theme
// ************************************************************************ //
@@ -101,6 +117,7 @@ class ArcaneReactiveTheme extends ArcaneService {
/// ```
ArcaneReactiveTheme switchTheme({ThemeMode? themeMode}) {
_followingSystemTheme = false;
_followingSystemThemeNotifier.value = false;
if (themeMode != null) {
_updateTheme(themeMode);
@@ -127,6 +144,7 @@ class ArcaneReactiveTheme extends ArcaneService {
/// ```
ArcaneReactiveTheme followSystemTheme(BuildContext context) {
_followingSystemTheme = true;
_followingSystemThemeNotifier.value = true;
_currentSystemThemeMode =
context.isDarkMode ? ThemeMode.dark : ThemeMode.light;
@@ -152,6 +170,7 @@ class ArcaneReactiveTheme extends ArcaneService {
if (_currentThemeMode == ThemeMode.dark) {
_themeNotifier.value = theme;
_currentTheme = theme;
_effectiveThemeNotifier.value = theme;
}
return I;
@@ -173,6 +192,7 @@ class ArcaneReactiveTheme extends ArcaneService {
if (_currentThemeMode == ThemeMode.light) {
_themeNotifier.value = theme;
_currentTheme = theme;
_effectiveThemeNotifier.value = theme;
}
return I;
@@ -187,9 +207,11 @@ class ArcaneReactiveTheme extends ArcaneService {
_darkTheme.value = ThemeData.dark();
_lightTheme.value = ThemeData.light();
_followingSystemTheme = false;
_followingSystemThemeNotifier.value = false;
_updateTheme(ThemeMode.light);
_themeNotifier.value = _lightTheme.value;
_currentTheme = _lightTheme.value;
_effectiveThemeNotifier.value = _lightTheme.value;
}
/// Updates the current theme mode and broadcasts the change.
@@ -201,6 +223,7 @@ class ArcaneReactiveTheme extends ArcaneService {
final ThemeData newTheme = themeMode == ThemeMode.dark ? dark : light;
_currentTheme = newTheme;
_themeNotifier.value = newTheme;
_effectiveThemeNotifier.value = newTheme;
}
/// Disposes of the theme service resources.
@@ -212,6 +235,8 @@ class ArcaneReactiveTheme extends ArcaneService {
_systemThemeNotifier.dispose();
_themeModeNotifier.dispose();
_themeNotifier.dispose();
_effectiveThemeNotifier.dispose();
_followingSystemThemeNotifier.dispose();
_darkTheme.dispose();
_lightTheme.dispose();
super.dispose();