Struct FormNodeMeta 

pub struct FormNodeMeta {

    pub xfa_id: Option<String>,
    pub presence: Presence,
    pub page_break_before: bool,
    pub page_break_after: bool,
    pub break_target: Option<String>,
    pub content_area_break: bool,
    pub overflow_leader: Option<String>,
    pub overflow_trailer: Option<String>,
    pub keep_next_content_area: bool,
    pub keep_previous_content_area: bool,
    pub keep_intact_content_area: bool,
    pub layout_ready_script: Option<String>,
    pub event_scripts: Vec<EventScript>,
    pub data_bind_ref: Option<String>,
    pub data_bind_none: bool,
    pub style: FormNodeStyle,
    pub field_kind: FieldKind,
    pub group_kind: GroupKind,
    pub item_value: Option<String>,
    pub check_size: Option<f64>,
    pub display_items: Vec<String>,
    pub save_items: Vec<String>,
    pub runtime_listbox_items: Vec<(String, String)>,
    pub anchor_type: AnchorType,
    pub bound_data_node: Option<usize>,
    pub is_zero_instance_prototype: bool,
}

Extended metadata for a form node.

Carries XFA attributes that the layout engine and dynamic scripting system need but that are not part of the core FormNode shape.

Fields

xfa_id: Option<String>

Optional XFA id attribute.

presence: Presence

XFA presence attribute (visible/hidden/invisible/inactive).

page_break_before: bool

Whether a page break should be inserted before this node.

page_break_after: bool

Whether a page break should be inserted after this node.

break_target: Option<String>

Target page area name/id for the break (e.g. “MP3”, “Page4_ID”).

content_area_break: bool

Whether this node targets a specific content area via breakBefore targetType="contentArea". Such nodes should be excluded from the primary content flow (they go into small decorative areas like “flatten” or “eSign”).

overflow_leader: Option<String>

Overflow leader reference name.

overflow_trailer: Option<String>

Overflow trailer reference name.

keep_next_content_area: bool

Keep with next content area.

keep_previous_content_area: bool

Keep with previous content area.

keep_intact_content_area: bool

Keep intact within content area.

layout_ready_script: Option<String>

Layout-ready script (XFA S14.3).

event_scripts: Vec<EventScript>

Event scripts collected from <event> and <calculate> children.

data_bind_ref: Option<String>

Explicit XFA data binding ref from <bind ref="...">.

data_bind_none: bool

Whether the node explicitly opts out of data binding via <bind match="none">.

style: FormNodeStyle

Visual style (font, colors, borders).

field_kind: FieldKind

The kind of field (text, checkbox, radio, etc.).

group_kind: GroupKind

The kind of group (none or exclusive choice).

item_value: Option<String>

Item value for fields inside an exclGroup.

check_size: Option<f64>

Check box / radio button size in points.

display_items: Vec<String>

Display items for choice list fields (XFA 3.3 §7.7).

save_items: Vec<String>

Save items for choice list fields (XFA 3.3 §7.7).

runtime_listbox_items: Vec<(String, String)>

Runtime-populated choice list items from sandboxed script addItem calls. Each tuple is (display_value, save_value). Phase D-β only; layout does not yet read this in default mode.

anchor_type: AnchorType

XFA anchorType for positioned layout (XFA 3.3 §2.6, App A p1510).

bound_data_node: Option<usize>

Raw DataDom arena index of the data node this form node was bound to during the merge phase. None means unbound. Phase D-γ: populated by FormMerger and consumed by the JS runtime to resolve $record.

is_zero_instance_prototype: bool

True when this node is a synthetic prototype for a repeating subform whose live instance count is currently zero. Used by the JS runtime to expose an InstanceManager via parent._child even when no data bindings produced live rows. Layout treats this as presence = Hidden.

Trait Implementations

impl Clone for FormNodeMeta

fn clone(&self) -> FormNodeMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FormNodeMeta

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

Formats the value using the given formatter.

impl Default for FormNodeMeta

fn default() -> FormNodeMeta

Returns the “default value” for a type.