EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.preference.matching;

import java.lang.reflect.Field;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.eclipse.jface.preference.ComboFieldEditor;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import eu.etaxonomy.cdm.model.common.IdentifiableEntity;

import eu.etaxonomy.cdm.strategy.match.IMatchStrategy;

import eu.etaxonomy.cdm.strategy.match.MatchException;

import eu.etaxonomy.cdm.strategy.match.MatchMode;

import eu.etaxonomy.taxeditor.preference.menu.CdmPreferencePage;

/**

 * @author n.hoffmann

 * @created Jan 22, 2010

 */

public abstract class AbstractMatchingPreferences<T extends IdentifiableEntity> 

		extends CdmPreferencePage {

	/**

	 * Fields that will be excluded from the display

	 */

	private static final String ExcludePattern = "serialVersionUID|logger|allFields|ajc.*|id|updated|updatedBy|created|createdBy|uuid" +

				"|parsingProblem|problemStarts|problemEnds|PROTECTED|NOT_PROTECTED|propertyChangeSupport|CLOB_LENGTH|newEntityListener|.*SWITCH_TABLE.*";

	protected IMatchStrategy matchStrategy;

	protected Class<T> clazz;

	private List<MatchMode> matchModeList;

	protected Map<String, ComboFieldEditor> matchModeCombos = new HashMap<>();

	 @Override

	 protected Control createContents(Composite parent) {

	       Composite top = new Composite(parent, SWT.LEFT);

	       GridData layoutData = new GridData(SWT.FILL, SWT.TOP, true, false);

           layoutData.heightHint = 300;

           top.setLayoutData(layoutData);

//	       final GridLayout gridLayout = new GridLayout();

//	       gridLayout.numColumns = 2;

//

//	       top.setLayout(gridLayout);

	       for(String fieldName : getFieldNames()){

               String[][] comboValues = new String[getMatchModeList().size()][2];

               for (int i=0;i<getMatchModeList().size();i++) {

                   comboValues[i][0] = getMatchModeList().get(i).name();

                   comboValues[i][1] = getMatchModeList().get(i).name();

               }

               ComboFieldEditor editor = new ComboFieldEditor(this.getClass().getCanonicalName()+fieldName,

                       fieldName, comboValues,

                       top);

               editor.setPreferenceStore(getPreferenceStore());

               editor.load();

               editor.fillIntoGrid(top, editor.getNumberOfControls());

               matchModeCombos.put(fieldName, editor);

           }

	       return top;

	    }

	    @Override

	    public void createControl(Composite parent){

	        super.createControl(parent);

	        if (getApplyButton() != null){

	            this.getApplyButton().setEnabled(true);

	        }

	    }

	    @Override

	    public boolean performOk() {

	       if (matchModeCombos.size() > 0){

	           for (ComboFieldEditor editor: matchModeCombos.values()){

	               editor.store();

	           }

	       }

	       return super.performOk();

	    }

	    @Override

	    protected void performDefaults() {

	        if (matchModeCombos.size() > 0){

	               for (ComboFieldEditor editor: matchModeCombos.values()){

	                   editor.loadDefault();

	               }

	           }

	        super.performDefaults();

	    }

//	@Override

//	protected void createFieldEditors() {

//	    if(CdmStore.isActive()) {

//            for(String fieldName : getFieldNames()){

//                String[][] comboValues = new String[getMatchModeList().size()][2];

//                for (int i=0;i<getMatchModeList().size();i++) {

//                    comboValues[i][0] = getMatchModeList().get(i).name();

//                    comboValues[i][1] = getMatchModeList().get(i).name();

//                }

//                addField(new ComboFieldEditor(this.getClass().getCanonicalName()+fieldName,

//                        fieldName, comboValues,

//                        getFieldEditorParent()));

//            }

//        }

//	}

	/**

	 * Transforms the MatchMode enum into a list.

	 *

	 * @return

	 */

	private List<MatchMode> getMatchModeList(){

		if(matchModeList == null){

			matchModeList = Arrays.asList(MatchMode.values());

		}

		return matchModeList;

	}

	/**

	 * Get names of all declared fields

	 */

	private List<String> getFieldNames(){

		List<Field> fields = new ArrayList<>();

		fields = getAllFields(fields, clazz);

		List<String> fieldNames = new ArrayList<String>();

		for(Field field : fields){

			String fieldName = field.getName();

			if(! fieldName.matches(ExcludePattern)){

				fieldNames.add(fieldName);

			}

		}

		return fieldNames;

	}

	/**

	 * Get all declared fields including fields of the superclasses.

	 *

	 * @param fields a {@link java.util.List} object.

	 * @param type a {@link java.lang.Class} object.

	 * @return a {@link java.util.List} object.

	 */

	public static List<Field> getAllFields(List<Field> fields, Class<?> type) {

        fields.addAll(Arrays.asList(type.getDeclaredFields()));

	    if (type.getSuperclass() != null) {

	        fields = getAllFields(fields, type.getSuperclass());

	    }

	    return fields;

	}

	/**

	 * Returns the default match strategy for the respective class

	 *

	 * @throws eu.etaxonomy.cdm.strategy.match.MatchException if any.

	 * @return a {@link eu.etaxonomy.cdm.strategy.match.IMatchStrategy} object.

	 */

	protected abstract IMatchStrategy getDefaultMatchStrategy() throws MatchException;

}