From f32bdbdeacef0b1fbcf53834acd189d9048953bf Mon Sep 17 00:00:00 2001
From: Eugene Pankov <john.pankov@gmail.com>
Date: Mon, 10 Dec 2018 11:57:13 +0100
Subject: [PATCH] make scroll-on-input behaviour configurable (fixes #543)

---
 .../src/components/terminalSettingsTab.component.pug     | 9 +++++++++
 .../src/components/terminalTab.component.ts              | 8 +++++---
 terminus-terminal/src/config.ts                          | 1 +
 terminus-terminal/src/frontends/htermFrontend.ts         | 2 ++
 4 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/terminus-terminal/src/components/terminalSettingsTab.component.pug b/terminus-terminal/src/components/terminalSettingsTab.component.pug
index f7bbd4ef..bee79326 100644
--- a/terminus-terminal/src/components/terminalSettingsTab.component.pug
+++ b/terminus-terminal/src/components/terminalSettingsTab.component.pug
@@ -82,6 +82,15 @@ h3.mb-3 Terminal
         [(ngModel)]='config.store.terminal.copyOnSelect',
         (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
diff --git a/terminus-terminal/src/components/terminalTab.component.ts b/terminus-terminal/src/components/terminalTab.component.ts
index 4fa5b074..5dea3b57 100644
--- a/terminus-terminal/src/components/terminalTab.component.ts
+++ b/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) {
diff --git a/terminus-terminal/src/config.ts b/terminus-terminal/src/config.ts
index 6f3f9669..9adc7d93 100644
--- a/terminus-terminal/src/config.ts
+++ b/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: {
diff --git a/terminus-terminal/src/frontends/htermFrontend.ts b/terminus-terminal/src/frontends/htermFrontend.ts
index 7c1ea6a0..7803379d 100644
--- a/terminus-terminal/src/frontends/htermFrontend.ts
+++ b/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)