custom_iterm_script.applescript: Improve method to detect open windows

custom_iterm_script.applescript

@@ -9,56 +9,65 @@ property open_in_new_tab : true
 
 -- Handlers
 on new_window()
-	tell application "iTerm" to create window with default profile
+  tell application "iTerm" to create window with default profile
 end new_window
 
 on new_tab()
-	tell application "iTerm" to tell the first window to create tab with default profile
+  tell application "iTerm" to tell the first window to create tab with default profile
 end new_tab
 
 on call_forward()
-	tell application "iTerm" to activate
+  tell application "iTerm" to activate
 end call_forward
 
 on is_running()
-	application "iTerm" is running
+  application "iTerm" is running
 end is_running
 
 on has_windows()
-	if not is_running() then return false
-	if windows of application "iTerm" is {} then return false
-	true
+  if not is_running() then return false
+
+  tell application "iTerm"
+    if windows is {} then return false
+    if tabs of current window is {} then return false
+    if sessions of current tab of current window is {} then return false
+
+    set session_text to contents of current session of current tab of current window
+    if words of session_text is {} then return false
+  end tell
+
+  true
 end has_windows
 
 on send_text(custom_text)
-	tell application "iTerm" to tell the first window to tell current session to write text custom_text
+  tell application "iTerm" to tell the first window to tell current session to write text custom_text
 end send_text
 
 -- Main
 on alfred_script(query)
-	if has_windows() then
-		if open_in_new_window then
-			new_window()
-		else if open_in_new_tab then
-			new_tab()
-		else
-			-- Reuse current tab
-		end if
-	else
-		-- If iTerm is not running and we tell it to create a new window, we get two
-		-- One from opening the application, and the other from the command
-		if is_running() then
-			new_window()
-		else
-			call_forward()
-		end if
-	end if
+  if has_windows() then
+    if open_in_new_window then
+      new_window()
+    else if open_in_new_tab then
+      new_tab()
+    else
+      -- Reuse current tab
+    end if
+  else
+    -- If iTerm is not running and we tell it to create a new window, we get two
+    -- One from opening the application, and the other from the command
+    if is_running() then
+      new_window()
+    else
+      call_forward()
+    end if
+  end if
 
-	-- Make sure a window exists before we continue, or the write may fail
-	repeat until has_windows()
-		delay 0.01
-	end repeat
+  -- Make sure a window exists before we continue, or the write may fail
+  repeat until has_windows()
+    delay 0.01
+  end repeat
 
-	send_text(query)
-	call_forward()
+  send_text(query)
+  call_forward()
 end alfred_script