ListNavigationAdapter.java

package gueei.binding.plugin.abs.attributes;

import gueei.binding.Binder;
import gueei.binding.BindingType;
import gueei.binding.ViewAttribute;
import gueei.binding.plugin.abs.BindableActionBar;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
import android.widget.Adapter;
import android.widget.SpinnerAdapter;

public class ListNavigationAdapter extends ViewAttribute<BindableActionBar, SpinnerAdapter> {

	public ListNavigationAdapter(BindableActionBar view) {
		super(SpinnerAdapter.class, view, "ListNavigationAdapter");
	}

	private SpinnerAdapter mAdapter;
	
	@Override
	protected void doSetAttributeValue(Object newValue) {
		if (newValue instanceof SpinnerAdapter){
			ActionBar bar = getHost().getActionBar();
			bar.setListNavigationCallbacks((SpinnerAdapter)newValue, 
					new NavigationListener());
			mAdapter = (SpinnerAdapter)newValue;
		}
	}

	@Override
	public SpinnerAdapter get() {
		return mAdapter;
	}
	
	@Override
	protected BindingType AcceptThisTypeAs(Class<?> type) {
		if (SpinnerAdapter.class.isAssignableFrom(type)){
			return BindingType.TwoWay;
		}
		if (Adapter.class.isAssignableFrom(type)){
			return BindingType.OneWay;
		}
		return BindingType.NoBinding;
	}
	
	private class NavigationListener implements OnNavigationListener{
		public boolean onNavigationItemSelected(
				int itemPosition, long itemId) {
			try {
				ListNavigationSelectedItem selectedItem = 
						(ListNavigationSelectedItem)Binder.getAttributeForView(getView(), "listNavigationSelectedItem");
				selectedItem.set(mAdapter.getItem(itemPosition));
				
				ListNavigationOnItemSelected onItemSelected = 
						(ListNavigationOnItemSelected)Binder.getAttributeForView(getView(), "listNavigationOnItemSelected");
				onItemSelected.invokeCommand(getView(), itemPosition, itemId);
			} catch (Exception e) {
				e.printStackTrace();
			}
			return true;
		}
	}

	public boolean onNavigationItemSelected(int position, long itemId) {
		try {
			ListNavigationSelectedItem selectedItem = 
					(ListNavigationSelectedItem)Binder.getAttributeForView(getView(), "ListNavigationSelectedItem");
			selectedItem.set(mAdapter.getItem(position));
			
			ListNavigationOnItemSelected onItemSelected = 
					(ListNavigationOnItemSelected)Binder.getAttributeForView(getView(), "ListNavigationOnItemSelected");
			onItemSelected.invokeCommand(getView(), position, itemId);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}
}