SemanticsAction class Null safety

The possible actions that can be conveyed from the operating system accessibility APIs to a semantics node.

\warning When changes are made to this class, the equivalent APIs in lib/ui/semantics/semantics_node.h and in each of the embedders must be updated. See also:

  • file://./../../lib/ui/semantics/semantics_node.h

Properties

hashCode int
The hash code for this object.
read-only, inherited
index int
The numerical value for this action.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() String
A string representation of this object.
override

Operators

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

Constants

copy → const SemanticsAction
Copy the current selection to the clipboard.
SemanticsAction._(_kCopyIndex)
customAction → const SemanticsAction
Indicates that the user has invoked a custom accessibility action.
SemanticsAction._(_kCustomActionIndex)
cut → const SemanticsAction
Cut the current selection and place it in the clipboard.
SemanticsAction._(_kCutIndex)
decrease → const SemanticsAction
A request to decrease the value represented by the semantics node.
SemanticsAction._(_kDecreaseIndex)
didGainAccessibilityFocus → const SemanticsAction
Indicates that the node has gained accessibility focus.
SemanticsAction._(_kDidGainAccessibilityFocusIndex)
didLoseAccessibilityFocus → const SemanticsAction
Indicates that the node has lost accessibility focus.
SemanticsAction._(_kDidLoseAccessibilityFocusIndex)
dismiss → const SemanticsAction
A request that the node should be dismissed.
SemanticsAction._(_kDismissIndex)
increase → const SemanticsAction
A request to increase the value represented by the semantics node.
SemanticsAction._(_kIncreaseIndex)
longPress → const SemanticsAction
The equivalent of a user pressing and holding the screen with the finger for a few seconds without moving it.
SemanticsAction._(_kLongPressIndex)
moveCursorBackwardByCharacter → const SemanticsAction
Move the cursor backward by one character.
SemanticsAction._(_kMoveCursorBackwardByCharacterIndex)
moveCursorBackwardByWord → const SemanticsAction
Move the cursor backward by one word.
SemanticsAction._(_kMoveCursorBackwardByWordIndex)
moveCursorForwardByCharacter → const SemanticsAction
Move the cursor forward by one character.
SemanticsAction._(_kMoveCursorForwardByCharacterIndex)
moveCursorForwardByWord → const SemanticsAction
Move the cursor forward by one word.
SemanticsAction._(_kMoveCursorForwardByWordIndex)
paste → const SemanticsAction
Paste the current content of the clipboard.
SemanticsAction._(_kPasteIndex)
scrollDown → const SemanticsAction
The equivalent of a user moving their finger across the screen from top to bottom.
SemanticsAction._(_kScrollDownIndex)
scrollLeft → const SemanticsAction
The equivalent of a user moving their finger across the screen from right to left.
SemanticsAction._(_kScrollLeftIndex)
scrollRight → const SemanticsAction
The equivalent of a user moving their finger across the screen from left to right.
SemanticsAction._(_kScrollRightIndex)
scrollUp → const SemanticsAction
The equivalent of a user moving their finger across the screen from bottom to top.
SemanticsAction._(_kScrollUpIndex)
setSelection → const SemanticsAction
Set the text selection to the given range.
SemanticsAction._(_kSetSelectionIndex)
setText → const SemanticsAction
Replaces the current text in the text field.
SemanticsAction._(_kSetTextIndex)
showOnScreen → const SemanticsAction
A request to fully show the semantics node on screen.
SemanticsAction._(_kShowOnScreenIndex)
tap → const SemanticsAction
The equivalent of a user briefly tapping the screen with the finger without moving it.
SemanticsAction._(_kTapIndex)
values → const Map<int, SemanticsAction>
The possible semantics actions.
<int, SemanticsAction>{_kTapIndex : tap, _kLongPressIndex : longPress, _kScrollLeftIndex : scrollLeft, _kScrollRightIndex : scrollRight, _kScrollUpIndex : scrollUp, _kScrollDownIndex : scrollDow…