package org.argeo.people.e4.parts;
   
   import java.io.InputStream;
   
   import javax.annotation.PreDestroy;
   import javax.jcr.Node;
   import javax.jcr.Property;
   
   import org.apache.commons.io.IOUtils;
  import org.argeo.cms.ui.eclipse.forms.FormToolkit;
  import org.argeo.connect.ConnectNames;
  import org.argeo.connect.e4.parts.AbstractConnectCTabEditor;
  import org.argeo.connect.ui.ConnectImages;
  import org.argeo.connect.ui.ConnectUiUtils;
  import org.argeo.eclipse.ui.EclipseUiUtils;
  import org.eclipse.swt.SWT;
  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.Display;
  import org.eclipse.swt.widgets.Label;
  
  /**
   * Slightly modifies AbstractPeopleEditor main layout adding a place for an
   * image on the left part of the header
   */
  public abstract class AbstractPeopleWithImgEditor extends AbstractConnectCTabEditor {
  
  	// A corresponding picture that must be explicitly disposed
  	protected Image itemPicture = null;
  
  	@Override
  	public void init() {
  
  		InputStream is = null;
  		try {
  			if (getNode().hasNode(ConnectNames.CONNECT_PHOTO)) {
  				Node imageNode = getNode().getNode(ConnectNames.CONNECT_PHOTO).getNode(Node.JCR_CONTENT);
  				is = imageNode.getProperty(Property.JCR_DATA).getBinary().getStream();
  				itemPicture = new Image(Display.getCurrent(), is);
  			} else
  				itemPicture = null;
  		} catch (Exception e) {
  		} finally {
  			IOUtils.closeQuietly(is);
  		}
  	}
  
  	@Override
  	protected void createMainLayout(Composite parent) {
  		parent.setLayout(EclipseUiUtils.noSpaceGridLayout());
  
  		FormToolkit toolkit = getManagedForm().getToolkit();
  
  		// Internal main Layout
  		// The header
  		Composite header = toolkit.createComposite(parent, SWT.NO_FOCUS | SWT.NO_SCROLL | SWT.NO_TRIM);
  
  		GridLayout gl;
  		if (displayImage())
  			gl = ConnectUiUtils.noSpaceGridLayout(3);
  		else
  			gl = ConnectUiUtils.noSpaceGridLayout(2);
  
  		// So that the buttons are not too close to the right border of the
  		// composite.
  		gl.marginRight = 5;
  		header.setLayout(gl);
  		header.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
  
  		if (displayImage()) {
  			// the image
  			Composite imgCmp = toolkit.createComposite(header, SWT.NO_FOCUS | SWT.NO_SCROLL | SWT.NO_TRIM);
  			imgCmp.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
  			populateImagePart(imgCmp);
  		}
  		// header content
  		Composite left = toolkit.createComposite(header, SWT.NO_FOCUS | SWT.NO_SCROLL | SWT.NO_TRIM);
  		left.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
  		populateHeader(left);
  
  		// header buttons
  		Composite right = toolkit.createComposite(header, SWT.NO_FOCUS | SWT.NO_SCROLL | SWT.NO_TRIM);
  		GridData gd = new GridData(SWT.CENTER, SWT.TOP, false, false);
  		gd.verticalIndent = 5;
  		right.setLayoutData(gd);
  		populateButtonsComposite(right);
  
  		// the body
  		Composite body = toolkit.createComposite(parent, SWT.NO_FOCUS);
  		body.setLayout(EclipseUiUtils.noSpaceGridLayout());
  		body.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  		populateBody(body);
  	}
  
  	protected void populateImagePart(Composite parent) {
  		GridLayout gl = new GridLayout(2, false);
  		gl.marginTop = gl.verticalSpacing = 0;
 		gl.horizontalSpacing = 0;
 		gl.marginWidth = 10;
 		gl.marginBottom = 8;
 		parent.setLayout(gl);
 
 		Label image = getManagedForm().getToolkit().createLabel(parent, "", SWT.NO_FOCUS);
 		image.setBackground(parent.getBackground());
 		GridData gd = new GridData(SWT.LEFT, SWT.TOP, false, false);
 		if (getPicture() != null) {
 			image.setImage(getPicture());
 			gd.horizontalIndent = 5;
 			gd.verticalIndent = 5;
 		} else {
 			gd.widthHint = 10;
 		}
 		image.setLayoutData(gd);
 
 	}
 
 	protected Image getPicture() {
 		return itemPicture;
 	}
 
 	@PreDestroy
 	public void dispose() {
 		// Free the resources.
 		if (itemPicture != null && !itemPicture.equals(ConnectImages.NO_PICTURE))
 			itemPicture.dispose();
 		super.dispose();
 	}
 
 	/**
 	 * Overwrite to display no image in the header
 	 * 
 	 * @return
 	 */
 	protected boolean displayImage() {
 		return false;
 	}
 }