From 17f7af82314e556a216e1c56f556ef97231fa3d4 Mon Sep 17 00:00:00 2001
From: sbosse <sbosse@uni-bremen.de>
Date: Mon, 21 Jul 2025 23:11:22 +0200
Subject: [PATCH] Mon 21 Jul 22:43:21 CEST 2025

---
 js/term/widgets/arrows.js | 70 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 js/term/widgets/arrows.js

diff --git a/js/term/widgets/arrows.js b/js/term/widgets/arrows.js
new file mode 100644
index 0000000..944a2e9
--- /dev/null
+++ b/js/term/widgets/arrows.js
@@ -0,0 +1,70 @@
+var Comp = Require('com/compat');
+
+var Node = Require('term/widgets/node');
+var Box = Require('term/widgets/box');
+var Helpers = Require('term/helpers');
+var Button = Require('term/widgets/button');
+
+
+// Add up and down arrow buttons on the right outside of a widget
+// options.arrows: {up:'[-]',down:'[+]',width:3,height:1,fg:'red',bg:'default'}}
+module.exports = function (parent,options,up,down,nocontrol) {  
+  var bbox;
+  // Bbox computing for button positions; relatives can only be resolved to screen
+  // coordinates?
+  bbox=Helpers.bbox(parent.screen,options);
+  parent._.up = new Button({
+    screen: parent.screen,
+    top: bbox.top+1,
+    height: options.arrows.height||1,
+    left: bbox.left+bbox.width,
+    width: options.arrows.width||3,
+    content: options.arrows.up||'[-]',
+    align: 'center',
+    style: {
+      fg:options.arrows.fg||'red',
+      bg: options.arrows.bg||'white',
+      bold:true,
+    },
+    autoFocus: false,
+    hidden:options.hidden,
+    mouse: true
+  });
+  parent._.up.on('press',up);
+  parent.screen.append(parent._.up);
+  parent._.down = new Button({
+    screen: this.screen,
+    top: bbox.top+bbox.height-1-(options.arrows.height||1),
+    height: options.arrows.height||1,
+    left: bbox.left+bbox.width,
+    width: options.arrows.width||3,
+    content: options.arrows.down||'[+]',
+    align: 'center',
+    style: {
+      fg:options.arrows.fg||'red',
+      bg: options.arrows.bg||'white',
+      bold:true,
+    },
+    autoFocus: false,
+    hidden:options.hidden,
+    mouse: true
+  });
+  parent._.down.on('press',down);
+  parent.screen.append(parent._.down);
+  if (!nocontrol) {
+    parent._hide=parent.hide;
+    parent.hide = function() {
+      parent._hide();
+      if (parent._.up) parent._.up.hide();
+      if (parent._.down) parent._.down.hide();
+      parent.screen.render();
+    } 
+    parent._show = parent.show;
+    parent.show = function() {
+      parent._show();
+      if (parent._.up) parent._.up.show();
+      if (parent._.down) parent._.down.show();
+      parent.screen.render();
+    } 
+  }
+}