[lua] Add Next/Prev shortcuts

plugins/ColorCycle/main.lua

@@ -8,6 +8,8 @@ app.registerUi({["menu"] = "Color 3", ["callback"] = "colorThree", ["accelerator
 app.registerUi({["menu"] = "Color 4", ["callback"] = "colorFour", ["accelerator"] = "F18"});
 app.registerUi({["menu"] = "Solid", ["callback"] = "solid", ["accelerator"] = "<Alt>F15"});
 app.registerUi({["menu"] = "dash", ["callback"] = "dash", ["accelerator"] = "<Alt>F16"});
+app.registerUi({["menu"] = "prev", ["callback"] = "prev", ["accelerator"] = "<Ctrl>F15"});
+app.registerUi({["menu"] = "next", ["callback"] = "next", ["accelerator"] = "<Ctrl>F16"});
   -- if you want to have multiple color lists you must use the app.registerUi function multiple times
   -- with different callback functions and accelerators
 end
@@ -56,6 +58,15 @@ function dash()
     app.uiAction({["action"]="ACTION_TOOL_LINE_STYLE_DOT"})
 end
 
+function next()
+    app.uiAction({["action"]="ACTION_GOTO_NEXT"})
+end
+
+function prev()
+    app.uiAction({["action"]="ACTION_GOTO_BACK"})
+end
+
+
 function cycle()
   if (currentColor < #colorList) then
     currentColor = currentColor + 1