Fix using #allTabs; it isnt a list

orders.lua

@@ -35,7 +35,7 @@ local function displayTab(self)
     local tw,th = self.window.getSize()
     for i, val in pairs(orders) do
         local line_num = (i-self.scrollPos)*2+1
-        if line_num > 2 and line_num < th-1 then
+        if line_num > 0 and line_num < th-1 then
             self.window.setTextColor(colors.lightGray)
             self.window.setCursorPos(1,line_num)
             self.window.write(val.id)

requests.lua

@@ -51,7 +51,7 @@ local function displayTab(self)
     display_list = {}
     for i, val in pairs(requests) do
         local line_num = i-self.scrollPos+1
-        if line_num > 2 and line_num < th then
+        if line_num > 0 and line_num < th then
             self.window.setTextColor(colors.white)
             self.window.setCursorPos(1,line_num)
             self.window.write(val.req.name)

tabview.lua

@@ -1,4 +1,5 @@
 local parent = term.current()
+local tabCount = 0
 local allTabs = {}
 local tabOrder = {}
 local currentTab = nil
@@ -26,6 +27,7 @@ local function addTab(tab, order_idx)
     end
     allTabs[tab.name] = tab
     tabOrder[order_idx] = tab.name
+    tabCount = tabCount + 1
     return tab
 end
 
@@ -43,14 +45,14 @@ local function showTab(name)
 end
 
 local function switchTab()
-    assert(#allTabs > 0, "tabs need to be registered in order to switch tabs")
+    assert(tabCount > 0, "tabs need to be registered in order to switch tabs")
     local idx = 0
     if currentTab ~= nil then
         currentTab.window.setVisible(false)
         idx = tabOrder[currentTab.name]
     end
     idx = idx + 1
-    if idx > #allTabs then
+    if idx > tabCount then
         idx = 1
     end
     currentTab = allTabs[tabOrder[idx]]