jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/mappings/details/PrimaryKeyJoinColumnsInSecondaryTableComposite.java - dali/webtools.dali - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007 Oracle. All rights reserved.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0, which accompanies this distribution
  * and is available at http://www.eclipse.org/legal/epl-v10.html.
  *
  * Contributors:
  *     Oracle - initial API and implementation
  ******************************************************************************/
 package org.eclipse.jpt.ui.internal.mappings.details;

 import java.util.Iterator;
 import org.eclipse.emf.common.command.CommandStack;
 import org.eclipse.emf.common.notify.Adapter;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.notify.impl.AdapterImpl;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.jface.viewers.IContentProvider;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.ListViewer;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.jpt.core.internal.mappings.IAbstractJoinColumn;
 import org.eclipse.jpt.core.internal.mappings.INamedColumn;
 import org.eclipse.jpt.core.internal.mappings.IPrimaryKeyJoinColumn;
 import org.eclipse.jpt.core.internal.mappings.ISecondaryTable;
 import org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage;
 import org.eclipse.jpt.ui.internal.IJpaHelpContextIds;
 import org.eclipse.jpt.ui.internal.details.BaseJpaComposite;
 import org.eclipse.jpt.ui.internal.mappings.JptUiMappingsMessages;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;

 public class PrimaryKeyJoinColumnsInSecondaryTableComposite extends BaseJpaComposite
 {
 	private ISecondaryTable secondaryTable;
 	private final Adapter secondaryTableListener;
 	private final Adapter pkJoinColumnListener;

 	ListViewer pkJoinColumnsListViewer;

 	private Group pkJoinColumnsGroup;
 	Button overrideDefaultJoinColumnsCheckBox;
 	private Button pkJoinColumnsAddButton;
 	private Button pkJoinColumnsRemoveButton;
 	private Button pkJoinColumnsEditButton;


 	public PrimaryKeyJoinColumnsInSecondaryTableComposite(Composite parent, CommandStack commandStack, TabbedPropertySheetWidgetFactory widgetFactory) {
 		super(parent, SWT.NULL, commandStack, widgetFactory);
 		this.secondaryTableListener = buildSecondaryTableListener();
 		this.pkJoinColumnListener = buildPkJoinColumnListener();
 	}

 	private Adapter buildSecondaryTableListener() {
 		return new AdapterImpl() {
 			public void notifyChanged(Notification notification) {
 				secondaryTableChanged(notification);
 			}
 		};
 	}

 	private Adapter buildPkJoinColumnListener() {
 		return new AdapterImpl() {
 			public void notifyChanged(Notification notification) {
 				pkJoinColumnChanged(notification);
 			}
 		};
 	}

 	@Override
 	protected void initializeLayout(Composite composite) {
 		GridLayout layout = new GridLayout(2, false);
 		layout.marginWidth = 0;
 		composite.setLayout(layout);

 		GridData gridData =  new GridData();
 		this.overrideDefaultJoinColumnsCheckBox = getWidgetFactory().createButton(
 			composite,
 			JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_overrideDefaultPrimaryKeyJoinColumns,
 			SWT.CHECK);
 		this.overrideDefaultJoinColumnsCheckBox.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				if (PrimaryKeyJoinColumnsInSecondaryTableComposite.this.overrideDefaultJoinColumnsCheckBox.getSelection()) {
 					IPrimaryKeyJoinColumn defaultJoinColumn = PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getDefaultPrimaryKeyJoinColumns().get(0);
 					String columnName = defaultJoinColumn.getDefaultName();
 					String referencedColumnName = defaultJoinColumn.getDefaultReferencedColumnName();

 					IPrimaryKeyJoinColumn pkJoinColumn = PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.createPrimaryKeyJoinColumn(0);
 					PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().add(pkJoinColumn);
 					pkJoinColumn.setSpecifiedName(columnName);
 					pkJoinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
 				} else {
 					PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().clear();
 				}
 			}
 		});

 		this.pkJoinColumnsGroup =
 			getWidgetFactory().createGroup(
 				composite,
 				JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_primaryKeyJoinColumn);
 		this.pkJoinColumnsGroup.setLayout(new GridLayout(2, false));
 		gridData =  new GridData();
 		gridData.horizontalAlignment = GridData.FILL;
 		gridData.verticalAlignment = GridData.FILL;
 		gridData.grabExcessHorizontalSpace = true;
 		gridData.grabExcessVerticalSpace = true;
 		gridData.horizontalSpan = 2;
 		this.pkJoinColumnsGroup.setLayoutData(gridData);

 		this.pkJoinColumnsListViewer = new ListViewer(this.pkJoinColumnsGroup, SWT.BORDER | SWT.MULTI);
 		this.pkJoinColumnsListViewer.setContentProvider(buildJoinColumnsListContentProvider());
 		this.pkJoinColumnsListViewer.setLabelProvider(buildJoinColumnsListLabelProvider());
 		gridData =  new GridData();
 		gridData.horizontalAlignment = GridData.FILL;
 		gridData.verticalAlignment = GridData.FILL;
 		gridData.verticalSpan = 3;
 		gridData.grabExcessHorizontalSpace = true;
 		gridData.grabExcessVerticalSpace = true;
 		this.pkJoinColumnsListViewer.getList().setLayoutData(gridData);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(this.pkJoinColumnsListViewer.getList(), IJpaHelpContextIds.MAPPING_JOIN_TABLE_COLUMNS);

 		this.pkJoinColumnsAddButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
 		this.pkJoinColumnsAddButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_add);
 		gridData =  new GridData();
 		gridData.horizontalAlignment = GridData.FILL;
 		this.pkJoinColumnsAddButton.setLayoutData(gridData);
 		this.pkJoinColumnsAddButton.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				addPrimaryKeyJoinColumn();
 			}
 		});

 		this.pkJoinColumnsEditButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
 		this.pkJoinColumnsEditButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_edit);
 		this.pkJoinColumnsEditButton.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				editPrimaryKeyJoinColumn();
 			}
 		});
 		gridData =  new GridData();
 		gridData.horizontalAlignment = GridData.FILL;
 		this.pkJoinColumnsEditButton.setLayoutData(gridData);

 		this.pkJoinColumnsRemoveButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
 		this.pkJoinColumnsRemoveButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_remove);
 		gridData =  new GridData();
 		gridData.horizontalAlignment = GridData.FILL;
 		gridData.verticalAlignment = GridData.BEGINNING;
 		this.pkJoinColumnsRemoveButton.setLayoutData(gridData);
 		this.pkJoinColumnsRemoveButton.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				removePrimaryKeyJoinColumn();
 			}
 		});

 		this.pkJoinColumnsListViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				updatePrimaryKeyJoinColumnsEnablement();
 			}
 		});
 	}

 	private IContentProvider buildJoinColumnsListContentProvider() {
 		return new IStructuredContentProvider(){
 			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 				// do nothing
 			}

 			public void dispose() {
 				// do nothing
 			}

 			public Object[] getElements(Object inputElement) {
 				return ((ISecondaryTable) inputElement).getPrimaryKeyJoinColumns().toArray();
 			}
 		};
 	}

 	private ILabelProvider buildJoinColumnsListLabelProvider() {
 		return new LabelProvider() {
 			public String getText(Object element) {
 				IPrimaryKeyJoinColumn joinColumn = (IPrimaryKeyJoinColumn) element;
 				return (PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns()) ?
 					buildJoinColumnLabel(joinColumn)
 				:
 					buildDefaultJoinColumnLabel(joinColumn);
 			}
 		};
 	}

 	String buildDefaultJoinColumnLabel(IPrimaryKeyJoinColumn joinColumn) {
 		return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
 	}

 	String buildJoinColumnLabel(IPrimaryKeyJoinColumn joinColumn) {
 		if (joinColumn.getSpecifiedName() == null) {
 			if (joinColumn.getSpecifiedReferencedColumnName() == null) {
 				return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsBothDefault, joinColumn.getName(),joinColumn.getReferencedColumnName());
 			}
 			return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsFirstDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
 		}
 		else if (joinColumn.getSpecifiedReferencedColumnName() == null) {
 			return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsSecDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
 		}
 		else {
 			return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParams, joinColumn.getName(), joinColumn.getReferencedColumnName());
 		}
 	}


 	void addPrimaryKeyJoinColumn() {
 		PrimaryKeyJoinColumnInSecondaryTableDialog dialog = new PrimaryKeyJoinColumnInSecondaryTableDialog(this.getControl().getShell(), this.secondaryTable);
 		addJoinColumnFromDialog(dialog);
 	}

 	private void addJoinColumnFromDialog(PrimaryKeyJoinColumnInSecondaryTableDialog dialog) {
 		if (dialog.open() == Window.OK) {
 			int index = this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().size();
 			String name = dialog.getSelectedName();
 			String referencedColumnName = dialog.getReferencedColumnName();
 			IPrimaryKeyJoinColumn joinColumn = this.secondaryTable.createPrimaryKeyJoinColumn(index);
 			this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().add(joinColumn);
 			joinColumn.setSpecifiedName(name);
 			joinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
 		}
 	}

 	private IPrimaryKeyJoinColumn getSelectedJoinColumn() {
 		return (IPrimaryKeyJoinColumn) ((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).getFirstElement();
 	}

 	void editPrimaryKeyJoinColumn() {
 		IPrimaryKeyJoinColumn joinColumn = getSelectedJoinColumn();
 		PrimaryKeyJoinColumnInSecondaryTableDialog dialog = new PrimaryKeyJoinColumnInSecondaryTableDialog(this.getControl().getShell(), joinColumn);
 		editJoinColumnFromDialog(dialog, joinColumn);
 	}

 	private void editJoinColumnFromDialog(PrimaryKeyJoinColumnInSecondaryTableDialog dialog, IPrimaryKeyJoinColumn joinColumn) {
 		if (dialog.open() == Window.OK) {
 			editJoinColumnDialogOkd(dialog, joinColumn);
 		}
 	}

 	private void editJoinColumnDialogOkd(PrimaryKeyJoinColumnInSecondaryTableDialog dialog, IPrimaryKeyJoinColumn joinColumn) {
 		String name = dialog.getSelectedName();
 		String referencedColumnName = dialog.getReferencedColumnName();

 		if (dialog.isDefaultNameSelected()) {
 			if (joinColumn.getSpecifiedName() != null) {
 				joinColumn.setSpecifiedName(null);
 			}
 		}
 		else if (joinColumn.getSpecifiedName() == null || !joinColumn.getSpecifiedName().equals(name)){
 			joinColumn.setSpecifiedName(name);
 		}

 		if (dialog.isDefaultReferencedColumnNameSelected()) {
 			if (joinColumn.getSpecifiedReferencedColumnName() != null) {
 				joinColumn.setSpecifiedReferencedColumnName(null);
 			}
 		}
 		else if (joinColumn.getSpecifiedReferencedColumnName() == null || !joinColumn.getSpecifiedReferencedColumnName().equals(referencedColumnName)){
 			joinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
 		}
 	}

 	void removePrimaryKeyJoinColumn() {
 		ISelection selection = this.pkJoinColumnsListViewer.getSelection();
 		if (selection instanceof StructuredSelection) {
 			for (Iterator i = ((StructuredSelection) selection).iterator(); i.hasNext(); ) {
 				this.secondaryTable.getPrimaryKeyJoinColumns().remove(i.next());
 			}
 		}
 	}

 	void updatePrimaryKeyJoinColumnsEnablement() {
 		boolean groupEnabledState = this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns();
 		enableGroup(this.pkJoinColumnsGroup, groupEnabledState);

 		this.pkJoinColumnsRemoveButton.setEnabled(groupEnabledState && !((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).isEmpty());
 		this.pkJoinColumnsEditButton.setEnabled(groupEnabledState && ((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).size() == 1);
 	}

 	private void enableGroup(Group group, boolean enabled) {
 		group.setEnabled(enabled);
 		for (int i = 0; i < group.getChildren().length; i++) {
 			group.getChildren()[i].setEnabled(enabled);
 		}
 	}


 	public void doPopulate(EObject obj) {
 		this.secondaryTable = (ISecondaryTable) obj;
 		if (this.secondaryTable == null) {
 			this.pkJoinColumnsListViewer.setInput(null);
 			return;
 		}

 		this.pkJoinColumnsListViewer.setInput(this.secondaryTable);


 		updatePrimaryKeyJoinColumnsEnablement();
 		this.overrideDefaultJoinColumnsCheckBox.setSelection(this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns());
 	}

 	@Override
 	protected void doPopulate() {
 	}

 	protected void engageListeners() {
 		if (this.secondaryTable != null) {
 			this.secondaryTable.eAdapters().add(this.secondaryTableListener);
 			for (IPrimaryKeyJoinColumn pkJoinColumn : this.secondaryTable.getPrimaryKeyJoinColumns()) {
 				pkJoinColumn.eAdapters().add(this.pkJoinColumnListener);
 			}
 		}
 	}

 	protected void disengageListeners() {
 		if (this.secondaryTable != null) {
 			for (IPrimaryKeyJoinColumn pkJoinColumn : this.secondaryTable.getPrimaryKeyJoinColumns()) {
 				pkJoinColumn.eAdapters().remove(this.pkJoinColumnListener);
 			}
 			this.secondaryTable.eAdapters().remove(this.secondaryTableListener);
 		}
 	}

 	protected void secondaryTableChanged(Notification notification) {
 		if (notification.getFeatureID(ISecondaryTable.class) == JpaCoreMappingsPackage.ISECONDARY_TABLE__SPECIFIED_PRIMARY_KEY_JOIN_COLUMNS) {
 			if (notification.getEventType() == Notification.ADD) {
 				((IPrimaryKeyJoinColumn) notification.getNewValue()).eAdapters().add(this.pkJoinColumnListener);
 			}
 			else if (notification.getEventType() == Notification.REMOVE) {
 				((IPrimaryKeyJoinColumn) notification.getOldValue()).eAdapters().remove(this.pkJoinColumnListener);
 			}
 			Display.getDefault().asyncExec(new Runnable() {
 				public void run() {
 					if (getControl().isDisposed()) {
 						return;
 					}
 					pkJoinColumnsListViewer.refresh();
 					overrideDefaultJoinColumnsCheckBox.setSelection(secondaryTable.containsSpecifiedPrimaryKeyJoinColumns());
 					updatePrimaryKeyJoinColumnsEnablement();
 				}
 			});
 		}
 	}

 	protected void pkJoinColumnChanged(Notification notification) {
 		if (notification.getFeatureID(INamedColumn.class) == JpaCoreMappingsPackage.INAMED_COLUMN__SPECIFIED_NAME
 			|| notification.getFeatureID(IAbstractJoinColumn.class) == JpaCoreMappingsPackage.IABSTRACT_JOIN_COLUMN__SPECIFIED_REFERENCED_COLUMN_NAME
 			|| notification.getFeatureID(INamedColumn.class) == JpaCoreMappingsPackage.INAMED_COLUMN__DEFAULT_NAME
 			|| notification.getFeatureID(IAbstractJoinColumn.class) == JpaCoreMappingsPackage.IABSTRACT_JOIN_COLUMN__DEFAULT_REFERENCED_COLUMN_NAME) {
 			Display.getDefault().asyncExec(new Runnable() {
 				public void run() {
 					if (getControl().isDisposed()) {
 						return;
 					}
 					pkJoinColumnsListViewer.refresh();
 				}
 			});
 		}
 	}

 	protected void enableWidgets(boolean enabled) {
 		this.pkJoinColumnsListViewer.getControl().setEnabled(enabled);
 		this.overrideDefaultJoinColumnsCheckBox.setEnabled(enabled);
 		this.pkJoinColumnsEditButton.setEnabled(enabled);
 		this.pkJoinColumnsRemoveButton.setEnabled(enabled);
 		this.pkJoinColumnsAddButton.setEnabled(enabled);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2007 Oracle. All rights reserved.
	* This program and the accompanying materials are made available under the
	* terms of the Eclipse Public License v1.0, which accompanies this distribution
	* and is available at http://www.eclipse.org/legal/epl-v10.html.
	*
	* Contributors:
	* Oracle - initial API and implementation
	******************************************************************************/
	package org.eclipse.jpt.ui.internal.mappings.details;

	import java.util.Iterator;
	import org.eclipse.emf.common.command.CommandStack;
	import org.eclipse.emf.common.notify.Adapter;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.common.notify.impl.AdapterImpl;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.jface.viewers.IContentProvider;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.ListViewer;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.jpt.core.internal.mappings.IAbstractJoinColumn;
	import org.eclipse.jpt.core.internal.mappings.INamedColumn;
	import org.eclipse.jpt.core.internal.mappings.IPrimaryKeyJoinColumn;
	import org.eclipse.jpt.core.internal.mappings.ISecondaryTable;
	import org.eclipse.jpt.core.internal.mappings.JpaCoreMappingsPackage;
	import org.eclipse.jpt.ui.internal.IJpaHelpContextIds;
	import org.eclipse.jpt.ui.internal.details.BaseJpaComposite;
	import org.eclipse.jpt.ui.internal.mappings.JptUiMappingsMessages;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;

	public class PrimaryKeyJoinColumnsInSecondaryTableComposite extends BaseJpaComposite
	{
	private ISecondaryTable secondaryTable;
	private final Adapter secondaryTableListener;
	private final Adapter pkJoinColumnListener;

	ListViewer pkJoinColumnsListViewer;

	private Group pkJoinColumnsGroup;
	Button overrideDefaultJoinColumnsCheckBox;
	private Button pkJoinColumnsAddButton;
	private Button pkJoinColumnsRemoveButton;
	private Button pkJoinColumnsEditButton;


	public PrimaryKeyJoinColumnsInSecondaryTableComposite(Composite parent, CommandStack commandStack, TabbedPropertySheetWidgetFactory widgetFactory) {
	super(parent, SWT.NULL, commandStack, widgetFactory);
	this.secondaryTableListener = buildSecondaryTableListener();
	this.pkJoinColumnListener = buildPkJoinColumnListener();
	}

	private Adapter buildSecondaryTableListener() {
	return new AdapterImpl() {
	public void notifyChanged(Notification notification) {
	secondaryTableChanged(notification);
	}
	};
	}

	private Adapter buildPkJoinColumnListener() {
	return new AdapterImpl() {
	public void notifyChanged(Notification notification) {
	pkJoinColumnChanged(notification);
	}
	};
	}

	@Override
	protected void initializeLayout(Composite composite) {
	GridLayout layout = new GridLayout(2, false);
	layout.marginWidth = 0;
	composite.setLayout(layout);

	GridData gridData = new GridData();
	this.overrideDefaultJoinColumnsCheckBox = getWidgetFactory().createButton(
	composite,
	JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_overrideDefaultPrimaryKeyJoinColumns,
	SWT.CHECK);
	this.overrideDefaultJoinColumnsCheckBox.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	if (PrimaryKeyJoinColumnsInSecondaryTableComposite.this.overrideDefaultJoinColumnsCheckBox.getSelection()) {
	IPrimaryKeyJoinColumn defaultJoinColumn = PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getDefaultPrimaryKeyJoinColumns().get(0);
	String columnName = defaultJoinColumn.getDefaultName();
	String referencedColumnName = defaultJoinColumn.getDefaultReferencedColumnName();

	IPrimaryKeyJoinColumn pkJoinColumn = PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.createPrimaryKeyJoinColumn(0);
	PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().add(pkJoinColumn);
	pkJoinColumn.setSpecifiedName(columnName);
	pkJoinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
	} else {
	PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().clear();
	}
	}
	});

	this.pkJoinColumnsGroup =
	getWidgetFactory().createGroup(
	composite,
	JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_primaryKeyJoinColumn);
	this.pkJoinColumnsGroup.setLayout(new GridLayout(2, false));
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	gridData.verticalAlignment = GridData.FILL;
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.horizontalSpan = 2;
	this.pkJoinColumnsGroup.setLayoutData(gridData);

	this.pkJoinColumnsListViewer = new ListViewer(this.pkJoinColumnsGroup, SWT.BORDER \| SWT.MULTI);
	this.pkJoinColumnsListViewer.setContentProvider(buildJoinColumnsListContentProvider());
	this.pkJoinColumnsListViewer.setLabelProvider(buildJoinColumnsListLabelProvider());
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	gridData.verticalAlignment = GridData.FILL;
	gridData.verticalSpan = 3;
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	this.pkJoinColumnsListViewer.getList().setLayoutData(gridData);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(this.pkJoinColumnsListViewer.getList(), IJpaHelpContextIds.MAPPING_JOIN_TABLE_COLUMNS);

	this.pkJoinColumnsAddButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
	this.pkJoinColumnsAddButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_add);
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	this.pkJoinColumnsAddButton.setLayoutData(gridData);
	this.pkJoinColumnsAddButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	addPrimaryKeyJoinColumn();
	}
	});

	this.pkJoinColumnsEditButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
	this.pkJoinColumnsEditButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_edit);
	this.pkJoinColumnsEditButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	editPrimaryKeyJoinColumn();
	}
	});
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	this.pkJoinColumnsEditButton.setLayoutData(gridData);

	this.pkJoinColumnsRemoveButton = new Button(this.pkJoinColumnsGroup, SWT.NONE);
	this.pkJoinColumnsRemoveButton.setText(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_remove);
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	gridData.verticalAlignment = GridData.BEGINNING;
	this.pkJoinColumnsRemoveButton.setLayoutData(gridData);
	this.pkJoinColumnsRemoveButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	removePrimaryKeyJoinColumn();
	}
	});

	this.pkJoinColumnsListViewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	updatePrimaryKeyJoinColumnsEnablement();
	}
	});
	}

	private IContentProvider buildJoinColumnsListContentProvider() {
	return new IStructuredContentProvider(){
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	// do nothing
	}

	public void dispose() {
	// do nothing
	}

	public Object[] getElements(Object inputElement) {
	return ((ISecondaryTable) inputElement).getPrimaryKeyJoinColumns().toArray();
	}
	};
	}

	private ILabelProvider buildJoinColumnsListLabelProvider() {
	return new LabelProvider() {
	public String getText(Object element) {
	IPrimaryKeyJoinColumn joinColumn = (IPrimaryKeyJoinColumn) element;
	return (PrimaryKeyJoinColumnsInSecondaryTableComposite.this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns()) ?
	buildJoinColumnLabel(joinColumn)
	:
	buildDefaultJoinColumnLabel(joinColumn);
	}
	};
	}

	String buildDefaultJoinColumnLabel(IPrimaryKeyJoinColumn joinColumn) {
	return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
	}

	String buildJoinColumnLabel(IPrimaryKeyJoinColumn joinColumn) {
	if (joinColumn.getSpecifiedName() == null) {
	if (joinColumn.getSpecifiedReferencedColumnName() == null) {
	return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsBothDefault, joinColumn.getName(),joinColumn.getReferencedColumnName());
	}
	return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsFirstDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
	}
	else if (joinColumn.getSpecifiedReferencedColumnName() == null) {
	return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParamsSecDefault, joinColumn.getName(), joinColumn.getReferencedColumnName());
	}
	else {
	return NLS.bind(JptUiMappingsMessages.PrimaryKeyJoinColumnsComposite_mappingBetweenTwoParams, joinColumn.getName(), joinColumn.getReferencedColumnName());
	}
	}


	void addPrimaryKeyJoinColumn() {
	PrimaryKeyJoinColumnInSecondaryTableDialog dialog = new PrimaryKeyJoinColumnInSecondaryTableDialog(this.getControl().getShell(), this.secondaryTable);
	addJoinColumnFromDialog(dialog);
	}

	private void addJoinColumnFromDialog(PrimaryKeyJoinColumnInSecondaryTableDialog dialog) {
	if (dialog.open() == Window.OK) {
	int index = this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().size();
	String name = dialog.getSelectedName();
	String referencedColumnName = dialog.getReferencedColumnName();
	IPrimaryKeyJoinColumn joinColumn = this.secondaryTable.createPrimaryKeyJoinColumn(index);
	this.secondaryTable.getSpecifiedPrimaryKeyJoinColumns().add(joinColumn);
	joinColumn.setSpecifiedName(name);
	joinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
	}
	}

	private IPrimaryKeyJoinColumn getSelectedJoinColumn() {
	return (IPrimaryKeyJoinColumn) ((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).getFirstElement();
	}

	void editPrimaryKeyJoinColumn() {
	IPrimaryKeyJoinColumn joinColumn = getSelectedJoinColumn();
	PrimaryKeyJoinColumnInSecondaryTableDialog dialog = new PrimaryKeyJoinColumnInSecondaryTableDialog(this.getControl().getShell(), joinColumn);
	editJoinColumnFromDialog(dialog, joinColumn);
	}

	private void editJoinColumnFromDialog(PrimaryKeyJoinColumnInSecondaryTableDialog dialog, IPrimaryKeyJoinColumn joinColumn) {
	if (dialog.open() == Window.OK) {
	editJoinColumnDialogOkd(dialog, joinColumn);
	}
	}

	private void editJoinColumnDialogOkd(PrimaryKeyJoinColumnInSecondaryTableDialog dialog, IPrimaryKeyJoinColumn joinColumn) {
	String name = dialog.getSelectedName();
	String referencedColumnName = dialog.getReferencedColumnName();

	if (dialog.isDefaultNameSelected()) {
	if (joinColumn.getSpecifiedName() != null) {
	joinColumn.setSpecifiedName(null);
	}
	}
	else if (joinColumn.getSpecifiedName() == null \|\| !joinColumn.getSpecifiedName().equals(name)){
	joinColumn.setSpecifiedName(name);
	}

	if (dialog.isDefaultReferencedColumnNameSelected()) {
	if (joinColumn.getSpecifiedReferencedColumnName() != null) {
	joinColumn.setSpecifiedReferencedColumnName(null);
	}
	}
	else if (joinColumn.getSpecifiedReferencedColumnName() == null \|\| !joinColumn.getSpecifiedReferencedColumnName().equals(referencedColumnName)){
	joinColumn.setSpecifiedReferencedColumnName(referencedColumnName);
	}
	}

	void removePrimaryKeyJoinColumn() {
	ISelection selection = this.pkJoinColumnsListViewer.getSelection();
	if (selection instanceof StructuredSelection) {
	for (Iterator i = ((StructuredSelection) selection).iterator(); i.hasNext(); ) {
	this.secondaryTable.getPrimaryKeyJoinColumns().remove(i.next());
	}
	}
	}

	void updatePrimaryKeyJoinColumnsEnablement() {
	boolean groupEnabledState = this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns();
	enableGroup(this.pkJoinColumnsGroup, groupEnabledState);

	this.pkJoinColumnsRemoveButton.setEnabled(groupEnabledState && !((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).isEmpty());
	this.pkJoinColumnsEditButton.setEnabled(groupEnabledState && ((StructuredSelection) this.pkJoinColumnsListViewer.getSelection()).size() == 1);
	}

	private void enableGroup(Group group, boolean enabled) {
	group.setEnabled(enabled);
	for (int i = 0; i < group.getChildren().length; i++) {
	group.getChildren()[i].setEnabled(enabled);
	}
	}


	public void doPopulate(EObject obj) {
	this.secondaryTable = (ISecondaryTable) obj;
	if (this.secondaryTable == null) {
	this.pkJoinColumnsListViewer.setInput(null);
	return;
	}

	this.pkJoinColumnsListViewer.setInput(this.secondaryTable);


	updatePrimaryKeyJoinColumnsEnablement();
	this.overrideDefaultJoinColumnsCheckBox.setSelection(this.secondaryTable.containsSpecifiedPrimaryKeyJoinColumns());
	}

	@Override
	protected void doPopulate() {
	}

	protected void engageListeners() {
	if (this.secondaryTable != null) {
	this.secondaryTable.eAdapters().add(this.secondaryTableListener);
	for (IPrimaryKeyJoinColumn pkJoinColumn : this.secondaryTable.getPrimaryKeyJoinColumns()) {
	pkJoinColumn.eAdapters().add(this.pkJoinColumnListener);
	}
	}
	}

	protected void disengageListeners() {
	if (this.secondaryTable != null) {
	for (IPrimaryKeyJoinColumn pkJoinColumn : this.secondaryTable.getPrimaryKeyJoinColumns()) {
	pkJoinColumn.eAdapters().remove(this.pkJoinColumnListener);
	}
	this.secondaryTable.eAdapters().remove(this.secondaryTableListener);
	}
	}

	protected void secondaryTableChanged(Notification notification) {
	if (notification.getFeatureID(ISecondaryTable.class) == JpaCoreMappingsPackage.ISECONDARY_TABLE__SPECIFIED_PRIMARY_KEY_JOIN_COLUMNS) {
	if (notification.getEventType() == Notification.ADD) {
	((IPrimaryKeyJoinColumn) notification.getNewValue()).eAdapters().add(this.pkJoinColumnListener);
	}
	else if (notification.getEventType() == Notification.REMOVE) {
	((IPrimaryKeyJoinColumn) notification.getOldValue()).eAdapters().remove(this.pkJoinColumnListener);
	}
	Display.getDefault().asyncExec(new Runnable() {
	public void run() {
	if (getControl().isDisposed()) {
	return;
	}
	pkJoinColumnsListViewer.refresh();
	overrideDefaultJoinColumnsCheckBox.setSelection(secondaryTable.containsSpecifiedPrimaryKeyJoinColumns());
	updatePrimaryKeyJoinColumnsEnablement();
	}
	});
	}
	}

	protected void pkJoinColumnChanged(Notification notification) {
	if (notification.getFeatureID(INamedColumn.class) == JpaCoreMappingsPackage.INAMED_COLUMN__SPECIFIED_NAME
	\|\| notification.getFeatureID(IAbstractJoinColumn.class) == JpaCoreMappingsPackage.IABSTRACT_JOIN_COLUMN__SPECIFIED_REFERENCED_COLUMN_NAME
	\|\| notification.getFeatureID(INamedColumn.class) == JpaCoreMappingsPackage.INAMED_COLUMN__DEFAULT_NAME
	\|\| notification.getFeatureID(IAbstractJoinColumn.class) == JpaCoreMappingsPackage.IABSTRACT_JOIN_COLUMN__DEFAULT_REFERENCED_COLUMN_NAME) {
	Display.getDefault().asyncExec(new Runnable() {
	public void run() {
	if (getControl().isDisposed()) {
	return;
	}
	pkJoinColumnsListViewer.refresh();
	}
	});
	}
	}

	protected void enableWidgets(boolean enabled) {
	this.pkJoinColumnsListViewer.getControl().setEnabled(enabled);
	this.overrideDefaultJoinColumnsCheckBox.setEnabled(enabled);
	this.pkJoinColumnsEditButton.setEnabled(enabled);
	this.pkJoinColumnsRemoveButton.setEnabled(enabled);
	this.pkJoinColumnsAddButton.setEnabled(enabled);
	}

	}