TAB-WINDOWS: A lispusers package that lets you step through open windows (#1789)

Start it running with `(START-TAB-WINDOWS)`.

Bonus debug tool: `(KEY-WINDOW)` starts a process that monitors keyboard
and mouse button events and displays them in a little window.

lispusers/TAB-WINDOWS

@@ -0,0 +1,73 @@
+(DEFINE-FILE-INFO PACKAGE "INTERLISP" READTABLE "INTERLISP" BASE 10)
+
+
(FILECREATED " 9-Aug-2024 11:31:37" {DSK}<Users>hjellinek>Projects>IL>TAB-WINDOWS.;13
 3078   
+
+      :CHANGES-TO (FNS START-TAB-WINDOWS TAB-WINDOWS SHOW-KEYS IS-KEY-DOWN? KEY-WINDOW)
+                  (VARS TAB-WINDOWSCOMS)
+                  (PROPS (TAB-WINDOWS :COMPILE-FILE))
+
+      :PREVIOUS-DATE " 4-Jun-2024 09:48:34" {DSK}<Users>hjellinek>Projects>IL>TAB-WINDOWS.;1)
+
+
+(PRETTYCOMPRINT TAB-WINDOWSCOMS)
+
+(RPAQQ TAB-WINDOWSCOMS
 ((FNS IS-KEY-DOWN? START-TAB-WINDOWS TAB-WINDOWS SHOW-KEYS KEY-WINDOW)
+                        (PROP :COMPILE-FILE TAB-WINDOWS)))
+(DEFINEQ
+
+(IS-KEY-DOWN?

+  [LAMBDA (KEY-NAME KEYS-DOWN)
+    (for
 KEY-NAME-LIST in
 KEYS-DOWN thereis
 (FMEMB KEY-NAME KEY-NAME-LIST])
+
+(START-TAB-WINDOWS

+  [LAMBDA (META-KEY-NAME)
+    (ADD.PROCESS (LIST 'TAB-WINDOWS (KWOTE META-KEY-NAME))
+           'NAME "Window Tabber" 'RESTARTABLE T])
+
+(TAB-WINDOWS

+  [LAMBDA (META-KEY-NAME)
+
+    (* ;; "When the meta and tab keys go down, TOTOPW the next window in OPENWINDOWS")

+
+    (DECLARE
 (CL:SPECIAL \KEYNAMES))
+    (LET ((CURRENT-WINDOW NIL)
+          (OPEN-WINDOWS (OPENWINDOWS)))
+         (CL:UNWIND-PROTECT
+             [PROGN (while
 T
+                       do
 ([LET ((KEYS-DOWN (for
 K in
 \KEYNAMES when
 (KEYDOWNP K) collect
 K)))
+                                [if
 (AND (IS-KEY-DOWN?
 'TAB KEYS-DOWN)
+                                         (IS-KEY-DOWN?
 META-KEY-NAME KEYS-DOWN))
+                                    then
 (if
 CURRENT-WINDOW
+                                             then
 (TOTOPW CURRENT-WINDOW)
+                                                  (SETQ CURRENT-WINDOW (CADR (FMEMB CURRENT-WINDOW 
+                                                                                    OPEN-WINDOWS)))
+                                           else
 (SETQ CURRENT-WINDOW (CAR OPEN-WINDOWS]
+                                (if
 (NOT KEYS-DOWN)
+                                    then
 (SETQ CURRENT-WINDOW NIL)
+                                         (SETQ OPEN-WINDOWS (OPENWINDOWS]
+                           (BLOCK 20])])
+
+(SHOW-KEYS

+  [LAMBDA NIL
+    (DECLARE
 (CL:SPECIAL \KEYNAMES))
+    (LET ((WINDOW (CREATEW NIL "Keys down")))
+         (WINDOWPROP WINDOW 'PROCESS (THIS.PROCESS))
+         [WINDOWPROP WINDOW 'CLOSEFN (FUNCTION (LAMBDA (W)
+                                                 (DEL.PROCESS (WINDOWPROP W 'PROCESS]
+         (CL:UNWIND-PROTECT
+             [PROGN (while
 T do
 (LET ((DOWN-KEYS (for
 K in
 \KEYNAMES when
 (KEYDOWNP K) collect
 K)))
+                                     (BLOCK 100)
+                                     (CLEARW WINDOW)
+                                     (COND
+                                        (DOWN-KEYS (PRIN1 DOWN-KEYS WINDOW]
+             (CLOSEW WINDOW))])
+
+(KEY-WINDOW

+  [LAMBDA NIL
+    (ADD.PROCESS '(SHOW-KEYS
)
+           'NAME "Showing Keys" 'RESTARTABLE T])
+)
+(DECLARE%: DONTCOPY
+  (FILEMAP (NIL (645 3055 (IS-KEY-DOWN? 655 . 791) (START-TAB-WINDOWS 793 . 950) (TAB-WINDOWS 952 . 2219
+) (SHOW-KEYS 2221 . 2939) (KEY-WINDOW 2941 . 3053)))))
+STOP