MODULE test_inputs ;

(*
   m2-GTK4 test - the input widgets and their get/set + signals.

   Exercises GtkEntry/GtkEditable, GtkCheckButton, GtkSwitch, GtkScale
   and GtkRange: sets values, reads them back, then emits the signals
   programmatically and checks the handlers ran.  Requires a display.
*)

FROM Gio IMPORT g_application_run, g_application_quit;
FROM GtkApplication IMPORT gtk_application_new;
FROM GtkWindow IMPORT gtk_application_window_new, gtk_window_set_child;
FROM GtkBox IMPORT gtk_box_new, gtk_box_append, gtk_box_set_spacing;
FROM GtkEnums IMPORT GtkVertical, GtkHorizontal;
FROM GtkEntry IMPORT gtk_entry_new, gtk_entry_set_placeholder_text,
   gtk_entry_get_text_length;
FROM GtkEditable IMPORT gtk_editable_set_text, gtk_editable_get_text,
   gtk_editable_set_editable, gtk_editable_get_editable;
FROM GtkCheckButton IMPORT gtk_check_button_new_with_label,
   gtk_check_button_set_active, gtk_check_button_get_active;
FROM GtkSwitch IMPORT gtk_switch_new, gtk_switch_set_active,
   gtk_switch_get_active, gtk_switch_set_state, gtk_switch_get_state;
FROM GtkScale IMPORT gtk_scale_new_with_range, gtk_scale_set_digits;
FROM GtkRange IMPORT gtk_range_set_value, gtk_range_get_value;
FROM GObject IMPORT g_signal_emit_by_name;
FROM GtkUtils IMPORT Connect, CStrToM2;
FROM SYSTEM IMPORT ADDRESS, ADR;
FROM libc IMPORT printf;

CONST
   AppId = "org.example.m2gtk4.TestInputs";

VAR
   app, entry, check, sw, scale: ADDRESS;
   entryChanged, toggled, valueChanged: BOOLEAN;
   passed: BOOLEAN;

PROCEDURE OnChanged (editable: ADDRESS; data: ADDRESS);
BEGIN
   entryChanged := TRUE
END OnChanged;

PROCEDURE OnToggled (button: ADDRESS; data: ADDRESS);
BEGIN
   toggled := TRUE
END OnToggled;

PROCEDURE OnValue (range: ADDRESS; data: ADDRESS);
BEGIN
   valueChanged := TRUE
END OnValue;

PROCEDURE OnActivate (application: ADDRESS; data: ADDRESS);
VAR
   window, box: ADDRESS;
   got: ARRAY [0..63] OF CHAR;
   ok: BOOLEAN;
BEGIN
   ok := TRUE;
   entryChanged := FALSE;
   toggled := FALSE;
   valueChanged := FALSE;

   (* --- GtkEntry / GtkEditable --- *)
   entry := gtk_entry_new();
   gtk_entry_set_placeholder_text(entry, "name");
   Connect(entry, "changed", ADR(OnChanged), NIL);
   gtk_editable_set_text(entry, "hello");
   CStrToM2(gtk_editable_get_text(entry), got);
   IF (got[0] # 'h') OR (got[4] # 'o') OR (got[5] # 0C) THEN
      printf("entry text wrong: [%s]\n", got);
      ok := FALSE
   END;
   IF gtk_entry_get_text_length(entry) # 5 THEN
      printf("entry length wrong\n");
      ok := FALSE
   END;
   gtk_editable_set_editable(entry, 0);
   IF gtk_editable_get_editable(entry) # 0 THEN
      printf("editable flag wrong\n");
      ok := FALSE
   END;

   (* --- GtkCheckButton --- *)
   check := gtk_check_button_new_with_label("Enable");
   Connect(check, "toggled", ADR(OnToggled), NIL);
   gtk_check_button_set_active(check, 1);
   IF gtk_check_button_get_active(check) # 1 THEN
      printf("check active wrong\n");
      ok := FALSE
   END;

   (* --- GtkSwitch --- *)
   sw := gtk_switch_new();
   gtk_switch_set_active(sw, 1);
   IF gtk_switch_get_active(sw) # 1 THEN
      printf("switch active wrong\n");
      ok := FALSE
   END;
   gtk_switch_set_state(sw, 0);
   IF gtk_switch_get_state(sw) # 0 THEN
      printf("switch state wrong\n");
      ok := FALSE
   END;

   (* --- GtkScale / GtkRange --- *)
   scale := gtk_scale_new_with_range(GtkHorizontal, 0.0, 10.0, 1.0);
   gtk_scale_set_digits(scale, 1);
   Connect(scale, "value-changed", ADR(OnValue), NIL);
   gtk_range_set_value(scale, 4.0);
   IF ABS(gtk_range_get_value(scale) - 4.0) > 0.001 THEN
      printf("scale value wrong\n");
      ok := FALSE
   END;

   (* the setters may already have emitted; emit explicitly to be sure *)
   g_signal_emit_by_name(entry, "changed");
   g_signal_emit_by_name(check, "toggled");
   g_signal_emit_by_name(scale, "value-changed");

   IF NOT entryChanged THEN printf("changed did not fire\n"); ok := FALSE END;
   IF NOT toggled THEN printf("toggled did not fire\n"); ok := FALSE END;
   IF NOT valueChanged THEN printf("value-changed did not fire\n"); ok := FALSE END;

   (* assemble everything to exercise the container path too *)
   box := gtk_box_new(GtkVertical, 6);
   gtk_box_set_spacing(box, 6);
   gtk_box_append(box, entry);
   gtk_box_append(box, check);
   gtk_box_append(box, sw);
   gtk_box_append(box, scale);

   window := gtk_application_window_new(application);
   gtk_window_set_child(window, box);

   passed := ok;
   g_application_quit(application)
END OnActivate;

VAR
   rc: INTEGER;
BEGIN
   passed := FALSE;
   app := gtk_application_new(AppId, 0);
   IF app = NIL THEN
      printf("test_inputs: FAIL (no app)\n");
      HALT(1)
   END;
   Connect(app, "activate", ADR(OnActivate), NIL);
   rc := g_application_run(app, 0, NIL);

   IF passed THEN
      printf("test_inputs: PASS\n");
      HALT(0)
   ELSE
      printf("test_inputs: FAIL\n");
      HALT(1)
   END
END test_inputs.