path: root/dozentenmodul/src/main/java/org/openslx/dozmod/gui/control/ImageCustomPermissionManager.java

package org.openslx.dozmod.gui.control;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.swing.JOptionPane;

import org.apache.log4j.Logger;
import org.openslx.bwlp.thrift.iface.ImagePermissions;
import org.openslx.bwlp.thrift.iface.UserInfo;
import org.openslx.dozmod.gui.control.table.ImagePermissionTable.UserImagePermissions;
import org.openslx.dozmod.gui.window.UserListWindow;
import org.openslx.dozmod.gui.window.UserListWindow.UserAddedCallback;


/**
 * Panel including ImagePermissionTable and add/remove buttons for setting customImagePermissions.
 */
public class ImageCustomPermissionManager extends ImageCustomPermissionManagerLayout {

	private ImageCustomPermissionManager me;

	private ArrayList<UserImagePermissions> permissionList;
	private Map<String, ImagePermissions> newPermissionMap;

	private ActionListener addButtonListener = null;
	private ActionListener removeButtonListener = null;

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


	public ImageCustomPermissionManager(){
		super();
		me = this;
	}

	/**
	 * Initialise the PermissionManager
	 * @param permissionMap the old permission, to initialise the table with, null creates empty table.
	 * @param defaultPermissions the permissions for a newly added user
	 */
	public void initPanel(Map<String, ImagePermissions> permissionMap, final ImagePermissions defaultPermissions){
		this.newPermissionMap = permissionMap == null ? new HashMap<String, ImagePermissions>() : permissionMap;
		permissionList = new ArrayList<UserImagePermissions>();

		for (Entry<String, ImagePermissions> e : newPermissionMap.entrySet()) {
			permissionList.add(new UserImagePermissions(e.getKey(), e.getValue()));
		}

		permissionTable.setData(permissionList, false);
		
		// clear listeners (multiple calls to init)
		if(addButtonListener != null)
			btnAddUser.removeActionListener(addButtonListener);
		if(removeButtonListener != null)
			btnRemoveUser.removeActionListener(removeButtonListener);

		// add user button listener
		addButtonListener = new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO again: which frame to give? JOptionPane.getFrameForComponent(me) sounds cool at least :)
				UserListWindow.open(JOptionPane.getFrameForComponent(me), new UserAddedCallback() {

					@Override
					public void userAdded(final UserInfo newUser, UserListWindow window) {

						// check if we have this user already
						for (UserImagePermissions current : permissionList) {
							if (current.userId.equals(newUser.userId)) {
								LOGGER.debug("User already present in the list, skipping!");
								return;
							}
						}
						// add it to the list with default permissions
						permissionList.add(new UserImagePermissions(newUser.userId, new ImagePermissions(defaultPermissions)));
						LOGGER.debug("User added: " + newUser);
						permissionTable.setData(permissionList, false);
					}
				}, "Hinzufügen");
			}
		};
		btnAddUser.addActionListener(addButtonListener);
		
		// delete user button listener
		removeButtonListener = new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent e) {
				final UserImagePermissions selected = permissionTable.getSelectedItem();
				LOGGER.debug("Removing: " + selected);
				if (!permissionList.remove(selected)) {
					LOGGER.debug("Could not remove: " + selected);
				}
				permissionTable.setData(permissionList, false);
			}
		};
		btnRemoveUser.addActionListener(removeButtonListener);
	}


	/**
	 * Get map with the permissions set in the table of the manager.
	 * @return Map with new custom permissions, null if something went wrong
	 */
	public Map<String, ImagePermissions> getMap(){
		// save the table stuff to our upload wizard state
		if (permissionList == null)
			return null;

		newPermissionMap.clear();

		// put permissions of the list into the map
		for (UserImagePermissions perm : permissionList) {
			newPermissionMap.put(perm.userId, perm.permissions);
		}
		return newPermissionMap;
	}

}