EMCO: Allow creation without tabs (#67)

Currently, if EMCO is initialized by passing an empty table it throws an error. This fix allows it to be initialized without tabs.

Co-authored-by: Borna <>

src/resources/emco.lua

@@ -29,6 +29,7 @@ local EMCO = Geyser.Container:new({
   tabBoxColor = "black",
   consoleContainerCSS = "",
   consoleContainerColor = "black",
+  noTabMessage = [[<center>No tabs added...</center>]],
   tabHeight = 25,
   leftMargin = 0,
   rightMargin = 0,
@@ -236,6 +237,11 @@ end
 --     <td>"black"</td>
 --   </tr>
 --   <tr>
+--     <td>noTabMessage</td>
+--     <td>Message shown in the parent label when there are no tabs added.</td>
+--     <td>[[<center>No tabs added...</center>]]</td>
+--   </tr>
+--   <tr>
 --     <td>gap</td>
 --     <td>How many pixels to place between the tabs and the miniconsoles?</td>
 --     <td>1</td>
@@ -1045,6 +1051,12 @@ end
 --- resets the object, redrawing everything
 function EMCO:reset()
   self:createContainers()
+
+  if next(self.consoles) == nil then
+    -- Stop execution if there are no consoles, this happens if EMCO is initialized by passing an empty table into consoles property
+    return
+  end
+
   for _, tabName in ipairs(self.consoles) do
     self:createComponentsForTab(tabName)
   end
@@ -1074,6 +1086,7 @@ function EMCO:createContainers()
     width = "100%",
     height = "-0px",
     name = self.name .. "ConsoleContainer",
+    message = self.noTabMessage
   }, self)
   self.consoleContainer:setStyleSheet(self.consoleContainerCSS)
   self.consoleContainer:setColor(self.consoleContainerColor)
@@ -2212,6 +2225,7 @@ function EMCO:save()
     tabBoxColor = self.tabBoxColor,
     consoleContainerCSS = self.consoleContainerCSS,
     consoleContainerColor = self.consoleContainerColor,
+    noTabMessage = self.noTabMessage,
     gap = self.gap,
     consoles = self.consoles,
     allTabExclusions = self.allTabExclusions,
@@ -2288,6 +2302,7 @@ function EMCO:load()
   self.tabBoxColor = configTable.tabBoxColor
   self.consoleContainerCSS = configTable.consoleContainerCSS
   self.consoleContainerColor = configTable.consoleContainerColor
+  self.noTabMessage = configTable.noTabMessage
   self.gap = configTable.gap
   self.consoles = configTable.consoles
   self.allTabExclusions = configTable.allTabExclusions