TerminalController class
View-model layer between the TerminalEngine and the widget tree.
Hosts state that was previously inline on the screen widget's state (selection presence, primary-selection text, current search pattern and its validity) and notifies listeners on every transition so the view can rebuild the relevant slice without owning the state directly.
Lifecycle: the widget constructs a controller, calls attach once with its
TerminalEngine, and calls dispose when tearing down. The controller
does NOT own the engine — disposal drops only its own ChangeNotifier
machinery and the engine reference; the widget remains responsible for
engine.dispose().
UI-only state (e.g. search-bar visibility) stays on the widget; only engine-coupled state lives here.
- Inheritance
-
- Object
- ChangeNotifier
- TerminalController
Constructors
Properties
- engine → TerminalEngine?
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- primary → String
-
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- searchPattern → String
-
no setter
- searchValid → bool
-
no setter
- selectionActive → bool
-
no setter
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
attach(
TerminalEngine engine) → void - Wire the controller to an engine. One-shot: re-attach without an intervening dispose is a programmer error.
-
capturePrimary(
) → void - Snapshot the current engine selection into primary. Notifies only on change so a redundant capture (e.g. tap after a tap) doesn't churn the listener chain.
-
clearSelection(
) → void - Gated to match alacritty event.rs:clear_selection — the FFI hop + full snapshot are skipped when there's nothing to clear.
-
dispose(
) → void -
Discards any resources used by the object.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
onTerminalInputStart(
) → void -
Mirror of alacritty
event.rs:on_terminal_input_start. Call this from every "user just typed / pasted / dropped" entry point — the gates ensure no FFI snapshot fires when there's nothing to clear and the viewport is already at the bottom (this is the Plan 2L perf fix). -
readSelectionText(
) → String? -
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
scrollLines(
int delta) → Future< void> -
scrollToBottom(
) → Future< void> -
searchClear(
) → void - Gated: no-op when nothing is set. Prevents redundant engine work when the search bar is closed without ever having been used.
-
searchNext(
) → void -
searchPrev(
) → void -
searchSet(
String pattern) → bool - Push a new pattern into the engine. Returns the engine's compile result; an empty pattern is always reported as valid (matches the UI's behavior for "no pattern → no error indicator").
-
selectionStart(
int row, int col, bool rightHalf, int kind) → void -
selectionUpdate(
int row, int col, bool rightHalf) → void -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited