zng_view_api::access

Enum AccessState

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#[non_exhaustive]
pub enum AccessState {
Show 42 variants AutoComplete(AutoComplete), Checked(Option<bool>), Current(CurrentKind), Disabled, ErrorMessage(AccessNodeId), Expanded(bool), Popup(Popup), Invalid(Invalid), Label(Txt), Level(NonZeroU32), Modal, MultiSelectable, Orientation(Orientation), Placeholder(Txt), ReadOnly, Required, Selected, Sort(SortDirection), ValueMax(f64), ValueMin(f64), Value(f64), ValueText(Txt), Live { indicator: LiveIndicator, atomic: bool, busy: bool, }, ActiveDescendant(AccessNodeId), ColCount(usize), ColIndex(usize), ColSpan(usize), Controls(Vec<AccessNodeId>), DescribedBy(Vec<AccessNodeId>), Details(Vec<AccessNodeId>), FlowTo(Vec<AccessNodeId>), LabelledBy(Vec<AccessNodeId>), LabelledByChild, Owns(Vec<AccessNodeId>), ItemIndex(usize), RowCount(usize), RowIndex(usize), RowSpan(usize), ItemCount(usize), Lang(LanguageIdentifier), ScrollHorizontal(f32), ScrollVertical(f32),
}
Expand description

Accessibility attribute of a node in the accessibility tree.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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AutoComplete(AutoComplete)

Inputting text triggers display of one or more predictions of the user’s intended value for a ComboBox, SearchBox, or TextInput.

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Checked(Option<bool>)

If the widget is checked (Some(true)), unchecked (Some(false)), or if the checked status is indeterminate (None).

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Current(CurrentKind)

Indicates that the widget represents a current item.

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Disabled

Indicates that the widget is perceivable but disabled, so it is not editable or otherwise operable.

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ErrorMessage(AccessNodeId)

Indicates that the widget is an error message for the referenced node.

The other widget must be Invalid.

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Expanded(bool)

Indicate that the widget toggles the visibility of related widgets.

Use Controls, or Owns to indicate the widgets that change visibility based on this value.

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Popup(Popup)

Indicates the availability and type of interactive popup widget.

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Invalid(Invalid)

Indicates the entered value does not conform to the format expected by the application.

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Label(Txt)

Defines a string value that labels the widget.

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Level(NonZeroU32)

Defines the hierarchical level of a widget within a structure.

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Modal

Indicates whether the widget is modal when displayed.

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MultiSelectable

Indicates that the user may select more than one item from the current selectable descendants.

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Orientation(Orientation)

Indicates whether the widget’s orientation is horizontal, vertical, or unknown/ambiguous.

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Placeholder(Txt)

Short hint (a word or short phrase) intended to help the user with data entry when a form control has no value.

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ReadOnly

Indicates that the widget is not editable, but is otherwise operable.

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Required

Indicates that user input is required on the widget before a form may be submitted.

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Selected

Indicates that the widget is selected.

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Sort(SortDirection)

Indicates if items in a table or grid are sorted in ascending or descending order.

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ValueMax(f64)

Defines the maximum value (inclusive).

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ValueMin(f64)

Defines the minimum value (inclusive).

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Value(f64)

Defines the current value.

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ValueText(Txt)

Defines a human readable version of the Value.

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Live

Indicate that the widget can change.

Fields

§indicator: LiveIndicator

How the changes must be notified.

§atomic: bool

If the live region must be re-read entirely after each update.

§busy: bool

Indicates the live area being modified and that assistive technologies may want to wait until the changes are complete before informing the user about the update.

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ActiveDescendant(AccessNodeId)

Identifies the currently active widget when focus is on a composite widget, ComboBox, TextInput, Group, or Application.

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ColCount(usize)

Defines the total number of columns in a Table, Grid, or TreeGrid when not all columns are present in tree.

The value 0 indicates that not all columns are in the widget and the application cannot determinate the exact number.

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ColIndex(usize)

Defines a widget’s column index in the parent table or grid.

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ColSpan(usize)

Defines the number of columns spanned by the widget in the parent table or grid.

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Controls(Vec<AccessNodeId>)

Identifies the widget(s) whose contents or presence are controlled by this widget.

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DescribedBy(Vec<AccessNodeId>)

Identifies the widget(s) that describes this widget.

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Details(Vec<AccessNodeId>)

Identifies the widget(s) that provide additional information related to this widget.

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FlowTo(Vec<AccessNodeId>)

Options for next widget to read.

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LabelledBy(Vec<AccessNodeId>)

Identifies the widget(s) that labels the widget it is applied to.

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LabelledByChild

Uses the widget children as LabelledBy.

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Owns(Vec<AccessNodeId>)

Identifies widget(s) in order to define a visual, functional, or contextual relationship between a parent and its child widgets when the tree hierarchy cannot be used to represent the relationship.

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ItemIndex(usize)

Defines the widget’s number or position in the current set of list items or tree items when not all items are present in the tree.

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RowCount(usize)

Defines the total number of rows in a Table, Grid, or TreeGrid when not all rows are present in tree.

The value 0 indicates that not all rows are in the widget and the application cannot determinate the exact number.

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RowIndex(usize)

Defines a widget’s row index in the parent table or grid.

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RowSpan(usize)

Defines the number of rows spanned by the widget in the parent table or grid.

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ItemCount(usize)

Defines the number of items in the current set of list items or tree items when not all items in the set are present in the tree.

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Lang(LanguageIdentifier)

Language of texts inside the widget and descendants.

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ScrollHorizontal(f32)

Normalized (0..1) horizontal scroll, 0 is showing the content leftmost edge, 1 is showing the content the rightmost edge.

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ScrollVertical(f32)

Normalized (0..1) vertical scroll, 0 is showing the content topmost edge, 1 is showing the content the bottommost edge.

Trait Implementations§

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impl Clone for AccessState

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fn clone(&self) -> AccessState

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AccessState

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for AccessState

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl IntoVar<Option<AccessState>> for AccessState

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type Var = LocalVar<Option<AccessState>>

Variable type that will wrap the T value. Read more
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fn into_var(self) -> Self::Var

Converts the source value into a var.
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fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>
where Self: Sized,

Converts into BoxedVar<T>. Read more
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impl PartialEq for AccessState

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fn eq(&self, other: &AccessState) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for AccessState

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl IntoValue<Option<AccessState>> for AccessState

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impl StructuralPartialEq for AccessState

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