terminal: expose onKey event

The commit exposes the terminal `onKey` event from xterm.

Signed-off-by: vince-fugnitto <[email protected]>

Author: vince-fugnitto

packages/terminal/src/browser/base/terminal-widget.ts

@@ -80,6 +80,9 @@ export abstract class TerminalWidget extends BaseWidget {
     /** Event that fires when the terminal size changed */
     abstract onSizeChanged: Event<{ cols: number; rows: number; }>;
 
+    /** Event that fires when the terminal receives a key event. */
+    abstract onKey: Event<{ key: string, domEvent: KeyboardEvent }>;
+
     /** Event that fires when the terminal input data */
     abstract onData: Event<string>;
 

packages/terminal/src/browser/terminal-widget-impl.ts

@@ -91,6 +91,9 @@ export class TerminalWidgetImpl extends TerminalWidget implements StatefulWidget
     protected readonly onDataEmitter = new Emitter<string>();
     readonly onData: Event<string> = this.onDataEmitter.event;
 
+    protected readonly onKeyEmitter = new Emitter<{ key: string, domEvent: KeyboardEvent }>();
+    readonly onKey: Event<{ key: string, domEvent: KeyboardEvent }> = this.onKeyEmitter.event;
+
     protected readonly toDisposeOnConnect = new DisposableCollection();
 
     @postConstruct()
@@ -213,6 +216,7 @@ export class TerminalWidgetImpl extends TerminalWidget implements StatefulWidget
         this.toDispose.push(this.onDidOpenFailureEmitter);
         this.toDispose.push(this.onSizeChangedEmitter);
         this.toDispose.push(this.onDataEmitter);
+        this.toDispose.push(this.onKeyEmitter);
 
         const touchEndListener = (event: TouchEvent) => {
             if (this.node.contains(event.target as Node)) {
@@ -242,6 +246,10 @@ export class TerminalWidgetImpl extends TerminalWidget implements StatefulWidget
             this.onDataEmitter.fire(data);
         }));
 
+        this.toDispose.push(this.term.onKey(data => {
+            this.onKeyEmitter.fire(data);
+        }));
+
         for (const contribution of this.terminalContributionProvider.getContributions()) {
             contribution.onCreate(this);
         }