generalized canvas

sys/apps/multishell

@@ -25,7 +25,8 @@ local Config = require('config')
 local Opus   = require('opus')
 local Util   = require('util')
 
--- Begin multishell
+local SESSION_FILE = 'usr/config/multishell.session'
+
 local parentTerm = term.current()
 local w,h = parentTerm.getSize()
 local tabs = {}
@@ -228,6 +229,7 @@ local function launchProcess(tab)
       selectTab(previousTab)
     end
     redrawMenu()
+    saveSession()
   end)
 
   tabs[tab.tabId] = tab
@@ -259,6 +261,19 @@ local function resizeWindows()
   end
 end
 
+local function saveSession()
+  local t = { }
+  for _,process in pairs(tabs) do
+    if process.path and not process.isOverview and not process.hidden then
+      table.insert(t, {
+        path = process.path,
+        args = process.args,
+      })
+    end
+  end
+  --Util.writeTable(SESSION_FILE, t)
+end
+
 local control
 local hotkeys = { }
 
@@ -383,6 +398,11 @@ function multishell.openTab(tab)
   else
     redrawMenu()
   end
+
+  if not tab.hidden then
+    saveSession()
+  end
+
   return tab.tabId
 end
 
@@ -454,6 +474,7 @@ end)
 
 local function startup()
   local hasError
+  local session = Util.readTable(SESSION_FILE)
 
   local overviewId = multishell.openTab({
     path = 'sys/apps/Overview.lua',
@@ -471,6 +492,12 @@ local function startup()
     hasError = true
   end
 
+  if session then
+    for _,v in pairs(session) do
+      multishell.openTab(v)
+    end
+  end
+
   if hasError then
     print()
     error('An autorun program has errored')