make scroll-on-input behaviour configurable (fixes #543)

terminus-terminal/src/components/terminalSettingsTab.component.pug

@@ -83,6 +83,15 @@ h3.mb-3 Terminal
         (ngModelChange)='config.save()',
     )
 
+.form-line
+    .header
+        .title Scroll on input
+        .description Scrolls the terminal to the bottom on user input
+    toggle(
+        [(ngModel)]='config.store.terminal.scrollOnInput',
+        (ngModelChange)='config.save()',
+    )
+    
 .form-line
     .header
         .title Use Alt key as the Meta key

terminus-terminal/src/components/terminalTab.component.ts

@@ -264,9 +264,9 @@ export class TerminalTabComponent extends BaseTabComponent {
                     let wheelDeltaY = 0
 
                     if ('wheelDeltaY' in event) {
-                        wheelDeltaY = (event as MouseWheelEvent)["wheelDeltaY"]
+                        wheelDeltaY = (event as MouseWheelEvent).wheelDeltaY
                     } else {
-                        wheelDeltaY = (event as MouseWheelEvent)["deltaY"]
+                        wheelDeltaY = (event as MouseWheelEvent).deltaY
                     }
                     if (event.ctrlKey || event.metaKey) {
 
@@ -300,7 +300,9 @@ export class TerminalTabComponent extends BaseTabComponent {
 
     sendInput (data: string) {
         this.session.write(data)
-        this.frontend.scrollToBottom()
+        if (this.config.store.terminal.scrollOnInput) {
+            this.frontend.scrollToBottom()
+        }
     }
 
     write (data: string) {

terminus-terminal/src/config.ts

@@ -21,6 +21,7 @@ export class TerminalConfigProvider extends ConfigProvider {
             customShell: '',
             rightClick: 'menu',
             copyOnSelect: false,
+            scrollOnInput: true,
             workingDirectory: '',
             altIsMeta: false,
             colorScheme: {

terminus-terminal/src/frontends/htermFrontend.ts

@@ -72,6 +72,8 @@ export class HTermFrontend extends Frontend {
         preferenceManager.set('pass-alt-number', true)
         preferenceManager.set('cursor-blink', config.terminal.cursorBlink)
         preferenceManager.set('clear-selection-after-copy', true)
+        preferenceManager.set('scroll-on-output', false)
+        preferenceManager.set('scroll-on-keystroke', config.terminal.scrollOnInput)
 
         if (config.terminal.colorScheme.foreground) {
             preferenceManager.set('foreground-color', config.terminal.colorScheme.foreground)