SaveButton class
A customizable save button widget that visually indicates whether there are unsaved changes.
The button is enabled only when hasChanges is true. When enabled, it calls the provided onPressed callback when tapped. When disabled, it appears greyed out and is not tappable.
The button displays an icon and a label side by side, and has a subtle container styling with rounded corners and shadow to make it stand out.
Example usage:
SaveButton(
hasChanges: _formHasChanges,
onPressed: _saveData,
label: 'Save Changes',
)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SaveButton
- Available extensions
Constructors
- SaveButton.new({Key? key, required bool hasChanges, required VoidCallback? onPressed, required String label})
-
const
Properties
- hasChanges → bool
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- label → String
-
final
- marginZero → Widget
-
Available on Widget, provided by the WidgetMarginX extension
no setter - onPressed → VoidCallback?
-
final
- paddingZero → Widget
-
Available on Widget, provided by the WidgetPaddingX extension
no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sliverBox → Widget
-
Available on Widget, provided by the WidgetSliverBoxX extension
no setter
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
marginAll(
double margin) → Widget -
Available on Widget, provided by the WidgetMarginX extension
-
marginOnly(
{double left = 0.0, double top = 0.0, double right = 0.0, double bottom = 0.0}) → Widget -
Available on Widget, provided by the WidgetMarginX extension
-
marginSymmetric(
{double horizontal = 0.0, double vertical = 0.0}) → Widget -
Available on Widget, provided by the WidgetMarginX extension
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
paddingAll(
double padding) → Widget -
Available on Widget, provided by the WidgetPaddingX extension
-
paddingOnly(
{double left = 0.0, double top = 0.0, double right = 0.0, double bottom = 0.0}) → Widget -
Available on Widget, provided by the WidgetPaddingX extension
-
paddingSymmetric(
{double horizontal = 0.0, double vertical = 0.0}) → Widget -
Available on Widget, provided by the WidgetPaddingX extension
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited