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.bulkeditor.e4;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.util.Properties;

import org.eclipse.nebula.widgets.nattable.persistence.command.DisplayPersistenceDialogCommand;

import org.eclipse.nebula.widgets.nattable.persistence.command.DisplayPersistenceDialogCommandHandler;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.FocusEvent;

import org.eclipse.swt.events.FocusListener;

import org.eclipse.swt.events.KeyAdapter;

import org.eclipse.swt.events.KeyEvent;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

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.Label;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.PlatformUI;

import org.eclipse.ui.swt.IFocusService;

import eu.etaxonomy.cdm.common.CdmUtils;

import eu.etaxonomy.taxeditor.bulkeditor.BulkEditorQuery;

import eu.etaxonomy.taxeditor.l10n.Messages;

import eu.etaxonomy.taxeditor.model.ColorResources;

import eu.etaxonomy.taxeditor.model.ImageResources;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.preference.Resources;

import eu.etaxonomy.taxeditor.store.SearchManager;

import eu.etaxonomy.taxeditor.workbench.WorkbenchUtility;

/**

 * @author p.ciardelli

 * @author e.-m.lee

 * @author n.hoffmann

 * @created 17.08.2009

 * @version 1.0

 */

public class BulkEditorSearchE4 {

	private static final String SEARCH = Messages.BulkEditorSearchE4_SEARCH;

	private static final String DEFAULT_TEXT = String.format(Messages.BulkEditorSearchE4_WILDCARD, SearchManager.WILDCARD);

	private final BulkEditorE4Composite editor;

    private DisplayPersistenceDialogCommandHandler displayPersistenceDialogCommandHandler;

    private Properties natTableState;

	private Text text;

	private Button button;

	private Button btnManageState;

	public Object ORDER_BY = new Object();

	public BulkEditorSearchE4(BulkEditorE4Composite editor, Composite parent, int style) {

		this.editor = editor;

		createControl(parent, style);

	}

	/**

	 * Creates the search control.

	 */

	protected void createControl(Composite parent, int style) {

		final Composite container = new Composite(parent, style);

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

		container.setLayoutData(gridData);

		container.setLayout(new GridLayout(5, false));

		createSearchTextField(container, SWT.BORDER | SWT.SINGLE | SWT.FULL_SELECTION);

		button = new Button(container, SWT.PUSH);

		button.setText(SEARCH);

		button.addSelectionListener(new SelectionAdapter() {

			@Override

			public void widgetSelected(SelectionEvent e) {

				updateEditorInput();

			}

		});

		/**

		 * Table state persistence

		 */

		natTableState = new Properties();

		//load persisted state

		File statePropertiesFile = getStatePropertiesFile();

		FileInputStream inputStream;

		try {

		    inputStream = new FileInputStream(statePropertiesFile);

		    natTableState.load(inputStream);

		} catch (IOException e) {

		    MessagingUtils.info("No initial state properties file found for bulk editor"); //$NON-NLS-1$

		}

		// add settings button

		displayPersistenceDialogCommandHandler = new DisplayPersistenceDialogCommandHandler(natTableState, editor.getNatTable());

        btnManageState = new Button(container, SWT.PUSH);

        btnManageState.setImage(ImageResources.getImage(ImageResources.SETTINGS));

        btnManageState.setToolTipText(Messages.BulkEditorSearchE4_TABLE_SETTINGS);

        btnManageState.addSelectionListener(new SelectionAdapter() {

            @Override

            public void widgetSelected(SelectionEvent e) {

                editor.getNatTable().doCommand(new DisplayPersistenceDialogCommand(editor.getNatTable()));

            }

        });

		registerAtFocusService();

	}

    DisplayPersistenceDialogCommandHandler getDisplayPersistenceDialogCommandHandler() {

        return displayPersistenceDialogCommandHandler;

    }

    File getStatePropertiesFile() {

        return new File(WorkbenchUtility.getBaseLocation(), "bulkeditor_tablestate.properties"); //$NON-NLS-1$

    }

    Properties getNatTableState() {

        return natTableState;

    }

	/**

	 * Handles focus changes for the textfield.

	 */

	private void registerAtFocusService() {

		IFocusService focusService =

			PlatformUI.getWorkbench().getService(IFocusService.class);

		if (focusService != null) {

			focusService.addFocusTracker(text, "bulkeditor.textControlId"); //$NON-NLS-1$

		}

	}

	/**

	 * Creates the search textfield.

	 */

	private void createSearchTextField(Composite parent, int style) {

		final Label label = new Label(parent, SWT.NONE);

		label.setText(Messages.BulkEditorSearchE4_TITLE_CACHE);

		text = new Text(parent, style);

		text.setText(DEFAULT_TEXT);

		text.setForeground(ColorResources.getColor(Resources.SEARCH_VIEW_FOREGROUND));

		text.addFocusListener(new FocusListener() {

			@Override

            public void focusGained(FocusEvent e) {

				text.setForeground(ColorResources.getColor(Resources.SEARCH_VIEW_FOCUS));

				if (DEFAULT_TEXT.equals(text.getText())) {

					text.setText(""); //$NON-NLS-1$

				}

			}

			@Override

            public void focusLost(FocusEvent e) {

				if (CdmUtils.isBlank(text.getText())) {

					text.setForeground(ColorResources.getColor(Resources.SEARCH_VIEW_FOREGROUND));

					text.setText(DEFAULT_TEXT);

				}

			}

		});

		text.addKeyListener(new KeyAdapter() {

			@Override

			public void keyReleased(KeyEvent e) {

				if (e.keyCode == SWT.CR) {

					updateEditorInput();

				}

			}

		});

		GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);

		text.setLayoutData(gridData);

		text.setFocus();

	}

	/**

	 * Shows the results of the search.

	 */

	public void updateEditorInput() {

		String searchString = getSearchString().trim();

		if(DEFAULT_TEXT.equals(searchString) || CdmUtils.isBlank(searchString)){

			return;

		}

		BulkEditorQuery query = new BulkEditorQuery(searchString);

		editor.performSearch(query);

	}

	/**

	 * Returns the current string in the search textfield.

	 * @return the content of the textfield

	 */

	public String getSearchString() {

		return text.getText().trim();

	}

	public void setFocus() {

		if(text != null && ! text.isDisposed()){

			text.setFocus();

		}

	}

}