Implement durationMode in TimeSpinner3D (#4379)

* Implemented durationMode in TimeSpinner3D

Added setDurationMode(boolean) logic to toggle duration mode (0-24h range, no meridiem).
Updated addComponents to include "hours" and "minutes" labels when in duration mode.
Updated rebuildHours to adjust startHour/endHour for duration mode.
Verified with TimeSpinner3DTest.

* Implemented durationMode in TimeSpinner3D and added unit test.

- In `TimeSpinner3D.java`:
    - Implemented `setDurationMode(boolean)` to update state and rebuild UI.
    - Updated `addComponents` to add "hours" and "minutes" labels in duration mode.
    - Updated `rebuildHours` to set correct hour range (0-24) for duration mode.
- Added `TimeSpinner3DTest.java` in `maven/core-unittests` to verify duration mode behavior.

---------

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: google-labs-jules[bot]

CodenameOne/src/com/codename1/ui/spinner/TimeSpinner3D.java

@@ -156,17 +156,30 @@ void addComponents() {
             setLayout(new LayeredLayout());
             addComponent(hour);
 
-            addComponent(minute);
             LayeredLayout ll = (LayeredLayout) getLayout();
-            if (showMeridiem) {
-                //content.addComponent(createSeparator());
-                addComponent(amPM);
-                ll.setInsets(hour, "0 67% 0 0")
-                        .setInsets(minute, "0 33% 0 33%")
-                        .setInsets(amPM, "0 0 0 67%");
+            if (durationMode) {
+                Label hoursLabel = new Label(getUIManager().localize("hours", "hours"), "TimeSpinnerHoursLabel");
+                Label minutesLabel = new Label(getUIManager().localize("minutes", "minutes"), "TimeSpinnerMinutesLabel");
+                addComponent(hoursLabel);
+                addComponent(minute);
+                addComponent(minutesLabel);
+
+                ll.setInsets(hour, "0 75% 0 0");
+                ll.setInsets(hoursLabel, "0 50% 0 25%");
+                ll.setInsets(minute, "0 25% 0 50%");
+                ll.setInsets(minutesLabel, "0 0 0 75%");
             } else {
-                ll.setInsets(hour, "0 50% 0 0")
-                        .setInsets(minute, "0 0 0 50%");
+                addComponent(minute);
+                if (showMeridiem) {
+                    //content.addComponent(createSeparator());
+                    addComponent(amPM);
+                    ll.setInsets(hour, "0 67% 0 0")
+                            .setInsets(minute, "0 33% 0 33%")
+                            .setInsets(amPM, "0 0 0 67%");
+                } else {
+                    ll.setInsets(hour, "0 50% 0 0")
+                            .setInsets(minute, "0 0 0 50%");
+                }
             }
 
 
@@ -352,7 +365,10 @@ public void setShowMeridiem(boolean showMeridiem) {
     }
 
     private void rebuildHours() {
-        if (showMeridiem) {
+        if (durationMode) {
+            startHour = 0;
+            endHour = 24;
+        } else if (showMeridiem) {
             startHour = 1;
             endHour = 12;
         } else {
@@ -449,6 +465,27 @@ public void setCurrentMeridiem(boolean currentMeridiem) {
         }
     }
 
+    /**
+     * Duration mode uses the time spinner to indicate a duration in hours and minutes
+     *
+     * @return the durationMode
+     */
+    public boolean isDurationMode() {
+        return durationMode;
+    }
+
+    /**
+     * Duration mode uses the time spinner to indicate a duration in hours and minutes
+     *
+     * @param durationMode the durationMode to set
+     */
+    public void setDurationMode(boolean durationMode) {
+        this.durationMode = durationMode;
+        if (durationMode) {
+            showMeridiem = false;
+        }
+        rebuildHours();
+    }
 
     /**
      * Show or hide the hours spinner.

maven/core-unittests/src/test/java/com/codename1/ui/spinner/TimeSpinner3DTest.java

@@ -0,0 +1,51 @@
+package com.codename1.ui.spinner;
+
+import com.codename1.ui.Component;
+import com.codename1.ui.Display;
+import com.codename1.ui.Form;
+import com.codename1.ui.Label;
+import com.codename1.ui.layouts.LayeredLayout;
+import com.codename1.junit.UITestBase;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class TimeSpinner3DTest extends UITestBase {
+
+    @Test
+    public void testDurationMode() {
+        TimeSpinner3D ts = new TimeSpinner3D();
+        ts.setDurationMode(true);
+
+        Assertions.assertTrue(ts.isDurationMode(), "durationMode should be true");
+        Assertions.assertFalse(ts.isShowMeridiem(), "showMeridiem should be false in duration mode");
+
+        // Check components
+        // In duration mode we expect: Hour spinner, Hour label, Minute spinner, Minute label
+        // That is 4 components.
+
+        Assertions.assertEquals(4, ts.getComponentCount(), "Should have 4 components in duration mode");
+
+        boolean foundHoursLabel = false;
+        boolean foundMinutesLabel = false;
+
+        for (int i = 0; i < ts.getComponentCount(); i++) {
+            Component c = ts.getComponentAt(i);
+            if (c instanceof Label) {
+                Label l = (Label) c;
+                if ("hours".equals(l.getText()) || "hours".equals(l.getUIID())) {
+                   if ("TimeSpinnerHoursLabel".equals(l.getUIID())) {
+                       foundHoursLabel = true;
+                   }
+                }
+                if ("minutes".equals(l.getText()) || "minutes".equals(l.getUIID())) {
+                   if ("TimeSpinnerMinutesLabel".equals(l.getUIID())) {
+                       foundMinutesLabel = true;
+                   }
+                }
+            }
+        }
+
+        Assertions.assertTrue(foundHoursLabel, "Should find hours label");
+        Assertions.assertTrue(foundMinutesLabel, "Should find minutes label");
+    }
+}