Struct TextInsertCmd 

pub struct TextInsertCmd {
    pub target: WidgetId,
    pub position: usize,
    pub text: String,
    pub metadata: CommandMetadata,
    /* private fields */
}

Command to insert text at a position.

Fields

target: WidgetId

Target widget.

position: usize

Position to insert at (byte offset).

text: String

Text to insert.

metadata: CommandMetadata

Command metadata.

Implementations

impl TextInsertCmd

pub fn new(target: WidgetId, position: usize, text: impl Into<String>) -> Self

Create a new text insert command.

pub fn with_apply<F>(self, f: F) -> Self

where F: Fn(WidgetId, usize, &str) -> CommandResult + Send + Sync + 'static,

Set the apply callback.

pub fn with_remove<F>(self, f: F) -> Self

where F: Fn(WidgetId, usize, usize) -> CommandResult + Send + Sync + 'static,

Set the remove callback.

Trait Implementations

impl Debug for TextInsertCmd

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

Formats the value using the given formatter.

impl UndoableCmd for TextInsertCmd

fn execute(&mut self) -> CommandResult

Execute the command, applying its effect.

fn undo(&mut self) -> CommandResult

Undo the command, reverting its effect.

fn description(&self) -> &str

Human-readable description for UI display.

fn size_bytes(&self) -> usize

Size of this command in bytes for memory budgeting.

fn can_merge(&self, other: &dyn UndoableCmd, config: &MergeConfig) -> bool

Check if this command can merge with another.

fn merge_text(&self) -> Option<&str>

Merge another command into this one.

fn accept_merge(&mut self, other: &dyn UndoableCmd) -> bool

Accept a merge from another command.

fn metadata(&self) -> &CommandMetadata

Get the command metadata.

fn target(&self) -> Option<WidgetId>

Get the target widget ID, if any.

fn as_any(&self) -> &dyn Any

Downcast to concrete type for merging.

fn as_any_mut(&mut self) -> &mut dyn Any

Downcast to mutable concrete type for merging.

fn debug_name(&self) -> &'static str

Debug description of the command.

fn redo(&mut self) -> CommandResult

Redo the command after it was undone.