SBaseDropdownMenuState<T extends SBaseDropdownMenu> class abstract

Inheritance

Constructors

SBaseDropdownMenuState()

Properties

animationController ↔ AnimationController
The controller responsible for animating the menu. The animation controls the menu opening and closing.
latefinalinherited
context → BuildContext
The location in the tree where this widget builds.
no setterinherited
controller ↔ SMenuController
The controller for this menu. Default is internal controller, but an external one (i.e. from class parameter) can be provided and is set to this variable in the initState() function.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
mounted → bool
Whether this State object is currently in a tree.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
widget → T
The current configuration.
no setterinherited

Methods

activate() → void
Called when this object is reinserted into the tree after having been removed via deactivate.
inherited
bottomCenterPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the bottom center of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
bottomLeftPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the bottom left of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
bottomRightPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the bottom right of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
buildMenu({void onTap(MapEntry<int, SMenuItem> element)?}) → dynamic
Given the items and possibly a builder , build the actual menu. Uses a SingleChildScrollView if performance mode is off, or uses a ListView for lazy loading if performance mode is on. The builder can be used to completely customize the menu actually shown.
inherited
calcPopupPosition(BuildContext context) → Offset
Calculate the position of the menu. Finds dropdown button size, window size, and popup menu size. Then finds location of the dropdown button. Finally, depending on the SDropdownMenuPosition, this function will calculate the location of the menu (from its top left corner) relative to the screen's (0, 0) coordinate. Also adjusts the positon of the menu will be out of screen bounds (thus making it clip off screen)
centerLeftPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the center left of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
centerPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the center of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
centerRightPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the center right of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
closeMenu() → void
The function responsible for performing the close menu task. Controller close function is set to this function.
inherited
createTicker(TickerCallback onTick) → Ticker
Creates a ticker with the given callback.
inherited
deactivate() → void
Called when this object is removed from the tree.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
didChangeDependencies() → void
Called when a dependency of this State object changes.
inherited
didUpdateWidget(covariant T oldWidget) → void
Called whenever the widget configuration changes.
inherited
dispose() → void
Called when this object is removed from the tree permanently.
inherited
initState() → void
Called when this object is inserted into the tree.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
openMenu() → void
The function responsible for performing the open menu task. Controller open function is set to this function.
inherited
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload.
inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toggleMenu() → void
The function responsible for performing the toggle menu task. Controller toggle function is set to this function.
inherited
topCenterPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the top center of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
topLeftPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the top left of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
topRightPositionCalculation(Size buttonSize, Size popupSize, Offset offset) → Offset
Calculate the location from (0, 0) of the screen if the menu is located at the top right of the dropdown button. Given the location of the button (offset), the size of the popup menu, and the size of the dropdown menu button, calculate location of the menu.
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited