Added clicked listeners.

wheel/src/kankan/wheel/demo/TimeActivity.java

@@ -4,6 +4,7 @@
 
 import kankan.wheel.R;
 import kankan.wheel.widget.OnWheelChangedListener;
+import kankan.wheel.widget.OnWheelClickedListener;
 import kankan.wheel.widget.OnWheelScrollListener;
 import kankan.wheel.widget.WheelView;
 import kankan.wheel.widget.adapters.NumericWheelAdapter;
@@ -64,9 +65,16 @@ public void onChanged(WheelView wheel, int oldValue, int newValue) {
 				}
 			}
 		};
-
 		hours.addChangingListener(wheelListener);
 		mins.addChangingListener(wheelListener);
+
+		OnWheelClickedListener click = new OnWheelClickedListener() {
+            public void onItemClicked(WheelView wheel, int itemIndex) {
+                wheel.setCurrentItem(itemIndex, true);
+            }
+        };
+        hours.addClickingListener(click);
+        mins.addClickingListener(click);
 
 		OnWheelScrollListener scrollListener = new OnWheelScrollListener() {
 			public void onScrollingStarted(WheelView wheel) {

wheel/src/kankan/wheel/widget/OnWheelChangedListener.java

@@ -1,5 +1,5 @@
 /*
- *  Copyright 2010 Yuri Kanivets
+ *  Copyright 2011 Yuri Kanivets
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -18,7 +18,7 @@
 
 /**
  * Wheel changed listener interface.
- * <p>The currentItemChanged() method is called whenever current wheel positions is changed:
+ * <p>The onChanged() method is called whenever current wheel positions is changed:
  * <li> New Wheel position is set
  * <li> Wheel view is scrolled
  */

wheel/src/kankan/wheel/widget/OnWheelClickedListener.java

@@ -0,0 +1,32 @@
+/*
+ *  Copyright 2011 Yuri Kanivets
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package kankan.wheel.widget;
+
+/**
+ * Wheel clicked listener interface.
+ * <p>The onItemClicked() method is called whenever a wheel item is clicked
+ * <li> New Wheel position is set
+ * <li> Wheel view is scrolled
+ */
+public interface OnWheelClickedListener {
+    /**
+     * Callback method to be invoked when current item clicked
+     * @param wheel the wheel view
+     * @param itemIndex the index of clicked item
+     */
+    void onItemClicked(WheelView wheel, int itemIndex);
+}

wheel/src/kankan/wheel/widget/WheelView.java

@@ -117,6 +117,7 @@ public class WheelView extends View {
 	// Listeners
 	private List<OnWheelChangedListener> changingListeners = new LinkedList<OnWheelChangedListener>();
 	private List<OnWheelScrollListener> scrollingListeners = new LinkedList<OnWheelScrollListener>();
+    private List<OnWheelClickedListener> clickingListeners = new LinkedList<OnWheelClickedListener>();
 
 	/**
 	 * Constructor
@@ -366,6 +367,31 @@ protected void notifyScrollingListenersAboutEnd() {
 		}
 	}
 
+    /**
+     * Adds wheel clicking listener
+     * @param listener the listener 
+     */
+    public void addClickingListener(OnWheelClickedListener listener) {
+        clickingListeners.add(listener);
+    }
+
+    /**
+     * Removes wheel clicking listener
+     * @param listener the listener
+     */
+    public void removeClickingListener(OnWheelClickedListener listener) {
+        clickingListeners.remove(listener);
+    }
+
+    /**
+     * Notifies listeners about clicking
+     */
+    protected void notifyClickListenersAboutClick(int item) {
+        for (OnWheelClickedListener listener : clickingListeners) {
+            listener.onItemClicked(this, item);
+        }
+    }
+
 	/**
 	 * Gets current value
 	 * 
@@ -764,7 +790,7 @@ public boolean onTouchEvent(MotionEvent event) {
 		            }
 		            int items = distance / getItemHeight();
 		            if (items != 0 && isValidItemIndex(currentItem + items)) {
-                        scroll(items, 0);
+	                    notifyClickListenersAboutClick(currentItem + items);
 		            }
 		        }
 		        break;