path: root/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/LectureChangeImage.java

package org.openslx.dozmod.gui.window;

import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.SwingUtilities;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.apache.log4j.Logger;
import org.openslx.bwlp.thrift.iface.ImageSummaryRead;
import org.openslx.dozmod.gui.Gui;
import org.openslx.dozmod.gui.control.table.ImageTable;
import org.openslx.dozmod.gui.helper.MessageType;
import org.openslx.dozmod.gui.helper.UiFeedback;
import org.openslx.dozmod.gui.window.layout.LectureChangeImageLayout;
import org.openslx.dozmod.permissions.ImagePerms;

/**
 * Window for changing the linked image of a lecture
 */
@SuppressWarnings("serial")
public class LectureChangeImage extends LectureChangeImageLayout implements UiFeedback {

	private static final Logger LOGGER = Logger.getLogger(LectureChangeImage.class);

	private boolean okUsed = false;
	private ImageTable imageTable;

	private LectureChangeImage me;

	/**
	 * Don't use this constructor, use static function open instead.
	 */
	protected LectureChangeImage(final Window modalParent) {
		super(modalParent);
		me = this;

		/**
		 * 	initialise the ImageListViewer 
		 */
		imageListViewer.refreshList(false, 1);
		imageTable = imageListViewer.getImageTable();

		imageTable.setColumnVisible(ImageTable.COL_LASTCHANGE , false);
		imageTable.setColumnVisible(ImageTable.COL_OS , false);
		imageTable.setColumnVisible(ImageTable.COL_SIZE , false);
		imageTable.setColumnVisible(ImageTable.COL_TEMPLATE , false);

		// finally the table listeners
		imageTable.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {

			}
			@Override
			public void mousePressed(MouseEvent e) {
				processClick(e);
			}
			@Override
			public void mouseReleased(MouseEvent e) {
				processClick(e);
			}
			private void processClick(MouseEvent e) {
				// left double click => open details
				if (SwingUtilities.isLeftMouseButton(e) && e.getClickCount() == 2) {
					ImageSummaryRead image = imageTable.getSelectedItem();
					if (image.isValid && ImagePerms.canLink(image)) {
						okUsed = true;
						dispose();
					} else {
						if(!image.isValid)
							Gui.showMessageBox(me, "Ausgewähltes Image ist ungültig!", MessageType.ERROR, LOGGER , null);
						else Gui.showMessageBox(me, "Keine Rechte zum Verlinken auf das ausgewählte Image.", MessageType.ERROR, LOGGER , null);
					}
				}

			}
		});


		imageTable.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
			@Override
			public void valueChanged(ListSelectionEvent e) {
				ImageSummaryRead image = imageTable.getSelectedItem();
				btnOk.setEnabled(image.isValid && ImagePerms.canLink(image));
			}
		});

		/**
		 * ActionListeners for the buttons.
		 */
		btnOk.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				okUsed = true;
				dispose();
			}
		});
		btnClose.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent arg0) {
				dispose();				
			}
		});
	}


	/**
	 * Set window visible and return resulting ImageSummaryRead
	 * @return ImageSummaryRead of selected Image
	 */
	private ImageSummaryRead runAndReturn(){
		setVisible(true);
		if (okUsed){
			return imageTable.getSelectedItem();
		} else {
			return null;
		}
	}

	/**
	 * Create new LectureChangeLinkedImage
	 * @param modalParent parent window of the popup window
	 * @return ImageSummaryRead of selected image or null, if abort has been used
	 */
	public static ImageSummaryRead open(Window modalParent) {
		return new LectureChangeImage(modalParent).runAndReturn();
	}

	@Override
	public boolean wantConfirmQuit() {
		return false;
	}

	@Override
	public void escapePressed() {
		dispose();
	}
}