Replace ^C with ^ in soft keyboard extension bar

js/term/input.js

@@ -256,16 +256,23 @@ module.exports = function (conn, screen) {
     'F5', 'F11', 'F12', 'Shift+F5'
   ]
 
+  let softModifiers = {
+    alt: false,
+    ctrl: false,
+    meta: false,
+    shift: false
+  }
+
   const handleKeyDown = function (e) {
     if (!shouldAcceptEvent()) return
     if (cfg.no_keys) return
 
     let modifiers = []
     // sorted alphabetically
-    if (e.altKey) modifiers.push('Alt')
-    if (e.ctrlKey) modifiers.push('Control')
-    if (e.metaKey) modifiers.push('Meta')
-    if (e.shiftKey) modifiers.push('Shift')
+    if (e.altKey || softModifiers.alt) modifiers.push('Alt')
+    if (e.ctrlKey || softModifiers.ctrl) modifiers.push('Control')
+    if (e.metaKey || softModifiers.meta) modifiers.push('Meta')
+    if (e.shiftKey || softModifiers.shift) modifiers.push('Shift')
 
     let key = KEY_NAMES[e.which] || e.key
 
@@ -455,7 +462,8 @@ module.exports = function (conn, screen) {
       cfg.no_keys = yes
     },
 
-    handleKeyDown
+    handleKeyDown,
+    softModifiers
   }
   return input
 }

js/term/soft_keyboard.js

@@ -122,7 +122,7 @@ module.exports = function (screen, input) {
     '↓': 0x28,
     '↑': 0x26,
     '→': 0x27,
-    '^C': { which: 0x43, ctrlKey: true }
+    Control: 'ctrl'
   }
 
   for (const shortcut in shortcuts) {
@@ -132,12 +132,24 @@ module.exports = function (screen, input) {
     shortcutBar.appendChild(button)
 
     const key = shortcuts[shortcut]
-    button.addEventListener('click', e => {
+    button.addEventListener('touchstart', e => {
+      if (typeof key === 'string') {
+        // modifier button
+        input.softModifiers[key] = true
+
+        // prevent default. This prevents scrolling, but also prevents the
+        // selection popup
+        e.preventDefault()
+      }
+    })
+    button.addEventListener('touchend', e => {
       e.preventDefault()
-      let fakeEvent = key
-      if (typeof key === 'number') fakeEvent = { which: key }
-      fakeEvent.preventDefault = () => {}
-      input.handleKeyDown(fakeEvent)
+      if (typeof key === 'number') {
+        let fakeEvent = { which: key, preventDefault: () => {} }
+        input.handleKeyDown(fakeEvent)
+      } else if (typeof key === 'string') {
+        input.softModifiers[key] = false
+      }
     })
   }
 }