Enum ActionTrigger 

pub enum ActionTrigger {
    Keystroke,
    Validate,
    Format,
    Calculate,
    CursorEnter,
    CursorExit,
    Focus,
    Blur,
    PageOpen,
    PageClose,
}

Action trigger types from the /AA (Additional Actions) dictionary on a form field or page.

Each variant maps to a PDF additional-action key per ISO 32000-2 §12.6.3. Most are field-level; PageOpen and PageClose are page-level.

Variants

Keystroke

/K — fires on every keystroke while a text field is being edited. Used for input filtering (e.g. allow only digits).

Validate

/V — fires when the field’s value is committed (focus loss or explicit submit). Used for validation; the script may reject the value.

Format

/F — fires before the field’s value is displayed. Used to format the visual representation (e.g. number formatting, dates).

Calculate

/C — fires when any field referenced in this field’s calculation order changes. Used to derive a value from other fields.

CursorEnter

/E — fires when the cursor enters the field’s annotation area.

CursorExit

/X — fires when the cursor exits the field’s annotation area.

Focus

/Fo — fires when the field gains keyboard focus.

Blur

/Bl — fires when the field loses keyboard focus.

PageOpen

/O — page-level: fires when the page is opened in a viewer.

PageClose

/C (page-level): fires when the page is closed in a viewer.

Trait Implementations

impl Clone for ActionTrigger

fn clone(&self) -> ActionTrigger

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ActionTrigger

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

Formats the value using the given formatter.

impl PartialEq for ActionTrigger

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl Copy for ActionTrigger

impl Eq for ActionTrigger

impl StructuralPartialEq for ActionTrigger