TextEditingModel class final

Pure editing operations over TextEditingValue.

Public offsets are Dart string (UTF-16 code unit) offsets, like every other text API in Dart, but every operation snaps to extended-grapheme-cluster boundaries before mutating. That keeps emoji, CJK, and combining sequences from being split by cursor movement or deletion.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

killRing ↔ String

The shared kill ring (most recent kill). Resettable for tests.

getter/setter pair

Static Methods

backspace(TextEditingValue value) → TextEditingValue

clearComposing(TextEditingValue value) → TextEditingValue

commitComposing(TextEditingValue value, {String? text, bool singleLine = false}) → TextEditingValue

Commits the current composing range.

delete(TextEditingValue value) → TextEditingValue

graphemeColumn(String text, int lineStart, int offset) → int

insert(TextEditingValue value, String text, {bool singleLine = false}) → TextEditingValue

killRange(TextEditingValue value, int start, int end, {bool captureToKillRing = true}) → TextEditingValue

Cuts [start, end) into the kill ring and returns the value with that span removed (caret at the cut point). Empty spans are a no-op.

killToLineEnd(TextEditingValue value, {bool captureToKillRing = true}) → TextEditingValue

Ctrl+K: kill from the caret to the end of the line; if already at the line end, kill the trailing newline (joining the next line) — emacs behavior.

killToLineStart(TextEditingValue value, {bool captureToKillRing = true}) → TextEditingValue

Ctrl+U: kill from the start of the line to the caret.

killWordLeft(TextEditingValue value, {bool captureToKillRing = true}) → TextEditingValue

Ctrl+W: kill the word before the caret.

lineEndOffset(String text, int offset) → int

lineStartOffset(String text, int offset) → int

moveLeft(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveLineDown(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveLineUp(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveRight(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveToEnd(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveToLineEnd(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveToLineStart(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveToStart(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveWordLeft(TextEditingValue value, {bool extend = false}) → TextEditingValue

moveWordRight(TextEditingValue value, {bool extend = false}) → TextEditingValue

nextGraphemeBoundary(String text, int offset) → int

nextWordBoundary(String text, int offset) → int

normalizeMultilineInput(String text) → String

Canonicalizes clipboard line endings for a multiline editing value.

normalizeSingleLineInput(String text) → String

offsetForGraphemeColumn(String text, int lineStart, int lineEnd, int column) → int

prepareInput(String text, {required bool singleLine, bool preserveText = false}) → String

Canonicalizes text arriving from outside the model — typed input, paste, an IME commit, a programmatic write.

previousGraphemeBoundary(String text, int offset) → int

previousWordBoundary(String text, int offset) → int

replaceRange(TextEditingValue value, TextRange range, String replacement, {bool singleLine = false}) → TextEditingValue

replaceSelection(TextEditingValue value, String replacement) → TextEditingValue

setComposingRange(TextEditingValue value, TextRange range) → TextEditingValue

snapOffsetToGraphemeBoundary(String text, int offset) → int

updateComposing(TextEditingValue value, String text, {bool singleLine = false}) → TextEditingValue

Replaces the active composing range with text and marks the inserted text as the new composing range.

yank(TextEditingValue value, {bool singleLine = false}) → TextEditingValue

Ctrl+Y: insert the kill ring at the caret (replacing any selection).