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FormSession

pdfrum_form

Struct FormSession 

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pub struct FormSession {
    pub focus: Option<FocusTarget>,
    pub fields: BTreeMap<FieldId, FieldState>,
    pub hover: Option<AnnotId>,
    pub drag: Option<DragAnchor>,
    pub dirty: BTreeSet<FieldId>,
    pub formatted: BTreeMap<FieldId, String>,
    pub config: SessionConfig,
    pub border_styles: BTreeMap<FieldId, BorderStyle>,
}
Expand description

One interaction session over one document.

Fields§

§focus: Option<FocusTarget>

What has the keyboard, if anything.

§fields: BTreeMap<FieldId, FieldState>

Per-field interaction state, created when a field is first touched.

A field keeps its state across focus changes, which is why clicking away from a half-typed field and back finds the typing still there.

§hover: Option<AnnotId>

What the pointer is over, for enter and exit.

§drag: Option<DragAnchor>

A drag in progress, if one is.

§dirty: BTreeSet<FieldId>

Fields whose interaction state has outrun the document’s value.

§formatted: BTreeMap<FieldId, String>

What a /AA /F format script asked each field to show, which is not what it stores.

CommitOutcome::display is a formatting script’s whole output, and this is where it survives until the next appearance is generated — a field with AFNumber_Format(2, 0, 0, 0, "", true) otherwise regenerates (1234) where it should draw (1,234.00).

Keyed by field rather than by widget, because regeneration gives every control of the field the same string. Cleared when a field takes focus: the editor is seeded from the stored value and never from the formatted text, so a user who clicks into a currency field sees 1234 to edit, not 1,234.00.

§config: SessionConfig

The switches.

§border_styles: BTreeMap<FieldId, BorderStyle>

Field.borderStyle writes a script made, keyed by field.

Spent into appearance generation rather than written into /BS: the dictionary stays as the file left it, and a regenerated stream sees the new style through pdfrum_doc::ap::widget::LiveInput.

Implementations§

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impl FormSession

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pub fn new() -> FormSession

An empty session with the default switches.

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pub fn with_config(config: SessionConfig) -> FormSession

An empty session with the given switches.

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pub fn focused_field(&self) -> Option<FieldId>

The field that currently has the keyboard, if a field does.

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pub fn focused_state(&self) -> Option<&FieldState>

The interaction state of the focused field, if there is one.

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pub fn focused_state_mut(&mut self) -> Option<&mut FieldState>

The interaction state of the focused field, mutably.

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pub fn is_accelerator(&self, modifiers: Modifiers) -> bool

Whether these modifiers make a gesture a shortcut in this session.

One predicate, shared with the key router rather than restated here: two spellings of the same question drift, and the oracle has only one.

Trait Implementations§

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impl Clone for FormSession

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 Default for FormSession

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fn default() -> Self

Returns the “default value” for a type. Read more

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