friendlier networking + adding tabs

sys/apps/Network.lua

@@ -28,10 +28,17 @@ end
 local page = UI.Page {
   menuBar = UI.MenuBar {
     buttons = {
-      { text = 'Telnet', event = 'telnet' },
-      { text = 'VNC',    event = 'vnc'    },
-      { text = 'Trust',  event = 'trust'  },
-      { text = 'Reboot', event = 'reboot' },
+      { text = 'Connect', dropdown = {
+        { text = 'Telnet      t', event = 'telnet' },
+        { text = 'VNC         v', event = 'vnc'    },
+        UI.MenuBar.spacer,
+        { text = 'Reboot      r', event = 'reboot' },
+      } },
+      { text = 'Trust', dropdown = {
+        { text = 'Establish', event = 'trust'   },
+        { text = 'Remove',    event = 'untrust' },
+      } },
+      { text = 'Help', event = 'help' },
     },
   },
   grid = UI.ScrollingGrid {
@@ -43,6 +50,9 @@ local page = UI.Page {
   },
   notification = UI.Notification { },
   accelerators = {
+    t = 'telnet',
+    v = 'vnc',
+    r = 'reboot',
     q = 'quit',
     c = 'clear',
   },
@@ -85,20 +95,62 @@ function page:eventHandler(event)
         args = { t.id },
         title = t.label,
       })
+    elseif event.type == 'clear' then
+      Util.clear(network)
+      page.grid:update()
+      page.grid:draw()
+
     elseif event.type == 'trust' then
       shell.openForegroundTab('trust ' .. t.id)
+
+    elseif event.type == 'untrust' then
+      local trustList = Util.readTable('usr/.known_hosts') or { }
+      trustList[t.id] = nil
+      Util.writeTable('usr/.known_hosts', trustList)
+
     elseif event.type == 'reboot' then
       sendCommand(t.id, 'reboot')
+
     elseif event.type == 'shutdown' then
       sendCommand(t.id, 'shutdown')
     end
   end
-  if event.type == 'quit' then
+  if event.type == 'help' then
+    UI:setPage(UI.Dialog {
+      title = 'Network Help',
+      height = 10,
+      backgroundColor = colors.white,
+      text = UI.TextArea {
+        x = 2, y = 2,
+        backgroundColor = colors.white,
+        value = [[
+In order to connect to another computer:
+
+  1. The target computer must have a password set (run 'password' from the shell prompt).
+  2. From this computer, click trust and enter the password for that computer.
+
+This only needs to be done once.
+        ]],
+      },
+      accelerators = {
+        q = 'cancel',
+      }
+    })
+  elseif event.type == 'quit' then
     Event.exitPullEvents()
   end
   UI.Page.eventHandler(self, event)
 end
 
+function page.menuBar:getActive(menuItem)
+  local t = page.grid:getSelected()
+  if menuItem.event == 'untrust' then
+    local trustList = Util.readTable('usr/.known_hosts') or { }
+    return t and trustList[t.id]
+  end
+  return not not t
+end
+
 function page.grid:getRowTextColor(row, selected)
   if not row.active then
     return colors.orange