package com.quantum.ui.dialog;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;


/**
 * @author BC
 */
public class SimpleSelectionDialog extends Dialog {
	
	class LabelProvider implements ITableLabelProvider {

		public Image getColumnImage(Object element, int columnIndex) {
			return SimpleSelectionDialog.this.image;
		}

		public String getColumnText(Object element, int columnIndex) {
			return (String) element;
		}

		public void addListener(ILabelProviderListener listener) {
		}

		public void dispose() {
		}

		public boolean isLabelProperty(Object element, String property) {
			return false;
		}

		public void removeListener(ILabelProviderListener listener) {
		}
	}
	
	class ContentProvider implements IStructuredContentProvider {

		public Object[] getElements(Object inputElement) {
			return SimpleSelectionDialog.this.objects;
		}

		public void dispose() {
		}

		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}
		
	}

	private final String title;
	private TableViewer viewer;
	private final Image image;
	private final String[] objects;
	
	private String selectedElement = null;

	/**
	 * @param parentShell
	 */
	protected SimpleSelectionDialog(Shell parentShell, String title, 
			String[] objects, Image image) {
		super(parentShell);
		this.title = title;
		this.objects = objects;
		this.image = image;
	}

    protected void configureShell(Shell shell) {
        super.configureShell(shell);
        shell.setText(title);
        GridLayout layout = new GridLayout();
        shell.setLayout(layout);
    }
        
    protected Control createDialogArea(Composite parent) {

        Composite composite = new Composite(parent, 0);
        GridLayout layout = new GridLayout();
        composite.setLayout(layout);
        layout.numColumns = 1;
        layout.verticalSpacing = 1;
        
        this.viewer = new TableViewer(composite);
        GridData full = new GridData(GridData.FILL_HORIZONTAL);
        full.widthHint = 200;
        full.heightHint = 50;
        this.viewer.getControl().setLayoutData(full);
        
        this.viewer.setLabelProvider(new LabelProvider());
        this.viewer.setContentProvider(new ContentProvider());

        this.viewer.setInput(this);

        return composite;
    }
    
	
	protected void okPressed() {
		
        IStructuredSelection selection = (IStructuredSelection) this.viewer.getSelection();
        this.selectedElement = (String) selection.getFirstElement();
        super.okPressed();
	}
	/**
	 * @return Returns the selectedElement.
	 */
	public String getSelectedElement() {
		return this.selectedElement;
	}
	/**
	 * @param selectedElement The selectedElement to set.
	 */
	public void setSelectedElement(String selectedElement) {
		this.selectedElement = selectedElement;
	}
}