// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

package com.symbian.smt.gui.smtwidgets;

import java.util.ArrayList;

import java.util.List;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.KeyEvent;

import org.eclipse.swt.events.KeyListener;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.layout.RowData;

import org.eclipse.swt.layout.RowLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Combo;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableColumn;

import org.eclipse.swt.widgets.TableItem;

import org.eclipse.swt.widgets.Text;

public class IgnoreWidget extends Composite {

	private Combo itemTypeCombo;

	private Text itemNameText;

	private Table ignoreItemsTable;

	private Button modifyButton;

	/**

	 * Creates an IgnoreWidget composite object

	 * 

	 * @return void

	 */

	public IgnoreWidget(final Composite parent, int style) {

		super(parent, style);

		this.setLayout(new FillLayout());

		final Composite gridLayoutComposite = new Composite(this, SWT.NONE);

		final GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 4;

		gridLayoutComposite.setLayout(gridLayout);

		ignoreItemsTable = new Table(gridLayoutComposite, SWT.FULL_SELECTION

				| SWT.BORDER);

		ignoreItemsTable.setHeaderVisible(true);

		ignoreItemsTable.setLinesVisible(true);

		final GridData gd_ignoreItemsTable = new GridData(SWT.FILL, SWT.FILL,

				true, true, 4, 1);

		ignoreItemsTable.setLayoutData(gd_ignoreItemsTable);

		ignoreItemsTable.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(final SelectionEvent e) {

				// When an item in the table is selected populate the item type

				// combo and the

				// item name text with the relevant information

				TableItem itemSelected = ignoreItemsTable

						.getItem(ignoreItemsTable.getSelectionIndex());

				int index = 0;

				for (String item : itemTypeCombo.getItems()) {

					if (item.equals(itemSelected.getText(0))) {

						itemTypeCombo.select(index);

					}

					index++;

				}

				itemNameText.setText(itemSelected.getText(1));

				itemNameText.setFocus();

				modifyButton.setEnabled(true);

			}

		});

		final TableColumn itemTypeTableColumn = new TableColumn(

				ignoreItemsTable, SWT.NONE);

		itemTypeTableColumn.setWidth(100);

		itemTypeTableColumn.setText("Item Type");

		final TableColumn itemNameTableColumn = new TableColumn(

				ignoreItemsTable, SWT.NONE);

		itemNameTableColumn.setWidth(269);

		itemNameTableColumn.setText("Item Name");

		final Label itemTypeLabel = new Label(gridLayoutComposite, SWT.NONE);

		itemTypeLabel.setText("Item Type");

		itemTypeCombo = new Combo(gridLayoutComposite, SWT.READ_ONLY);

		itemTypeCombo.setLayoutData(new GridData());

		itemTypeCombo.setItems(new String[] { "layer", "block", "subblock",

				"collection", "component" });

		itemTypeCombo.select(0);

		final Label itemNameLabel = new Label(gridLayoutComposite, SWT.NONE);

		itemNameLabel.setLayoutData(new GridData());

		itemNameLabel.setText("Item Name");

		itemNameText = new Text(gridLayoutComposite, SWT.BORDER);

		final GridData gd_itemNameText = new GridData(SWT.FILL, SWT.CENTER,

				true, false);

		itemNameText.setLayoutData(gd_itemNameText);

		itemNameText.addKeyListener(new KeyListener() {

			public void keyPressed(KeyEvent e) {

			}

			public void keyReleased(KeyEvent e) {

				if (itemNameText.getText().length() == 0) {

					modifyButton.setEnabled(false);

				}

			}

		});

		final Composite buttonsComposite = new Composite(gridLayoutComposite,

				SWT.NONE);

		final GridData gd_buttonsComposite = new GridData(SWT.CENTER,

				SWT.CENTER, false, false, 4, 1);

		buttonsComposite.setLayoutData(gd_buttonsComposite);

		final RowLayout rowLayout = new RowLayout();

		rowLayout.spacing = 30;

		buttonsComposite.setLayout(rowLayout);

		final Button addButton = new Button(buttonsComposite, SWT.NONE);

		addButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(final SelectionEvent e) {

				// Check to see if an item had been selected and item text has

				// been entered

				if (itemTypeCombo.getText().length() > 0

						&& itemNameText.getText().trim().length() > 0) {

					// Check that combination of type and text doesn't already

					// exist in the table

					Boolean alreadyExistsInTable = false;

					for (TableItem item : ignoreItemsTable.getItems()) {

						if (item.getText(0).equals(itemTypeCombo.getText())

								&& item.getText(1).equalsIgnoreCase(

										itemNameText.getText().trim())) {

							alreadyExistsInTable = true;

						}

					}

					// Add to the table if does not already exist

					if (!alreadyExistsInTable) {

						final TableItem newItemTableItem = new TableItem(

								ignoreItemsTable, SWT.BORDER);

						newItemTableItem.setText(0, itemTypeCombo.getText());

						newItemTableItem.setText(1, itemNameText.getText());

						// Clear the text entry

						itemNameText.setText("");

						modifyButton.setEnabled(false);

					} else {

						MessageDialog

								.openError(

										parent.getShell(),

										"Error",

										itemTypeCombo.getText()

												+ " "

												+ itemNameText.getText()

												+ " already exists in the list of items to ignore.");

					}

				}

				itemNameText.setFocus();

			}

		});

		final RowData rd_addButton = new RowData();

		rd_addButton.width = 75;

		addButton.setLayoutData(rd_addButton);

		addButton.setText("Add");

		final Button removeButton = new Button(buttonsComposite, SWT.NONE);

		removeButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(final SelectionEvent e) {

				if (ignoreItemsTable.getSelectionIndex() >= 0) {

					ignoreItemsTable.remove(ignoreItemsTable

							.getSelectionIndex());

					// Clear the text entry

					itemNameText.setText("");

					modifyButton.setEnabled(false);

				} else {

					MessageDialog

							.openInformation(parent.getShell(), "Info",

									"You need to select an item from the list before you can remove it.");

				}

				itemNameText.setFocus();

			}

		});

		final RowData rd_removeButton = new RowData();

		rd_removeButton.width = 75;

		removeButton.setLayoutData(rd_removeButton);

		removeButton.setText("Remove");

		modifyButton = new Button(buttonsComposite, SWT.NONE);

		modifyButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(final SelectionEvent e) {

				// Check to see if an item had been selected and item text has

				// been entered

				if (itemNameText.getText().length() > 0) {

					// Check that combination of type and text doesn't already

					// exist in the table

					Boolean alreadyExistsInTable = false;

					for (TableItem item : ignoreItemsTable.getItems()) {

						if (item.getText(0).equals(itemTypeCombo.getText())

								&& item.getText(1).equals(

										itemNameText.getText())) {

							alreadyExistsInTable = true;

						}

					}

					// Add to the table if does not already exist

					if (!alreadyExistsInTable) {

						TableItem itemSelected = ignoreItemsTable

								.getItem(ignoreItemsTable.getSelectionIndex());

						itemSelected.setText(0, itemTypeCombo.getText());

						itemSelected.setText(1, itemNameText.getText());

						// Clear the text entry

						itemNameText.setText("");

						modifyButton.setEnabled(false);

					}

				}

				itemNameText.setFocus();

			}

		});

		final RowData rd_modifyButton = new RowData();

		rd_modifyButton.width = 75;

		modifyButton.setLayoutData(rd_modifyButton);

		modifyButton.setText("Modify");

		modifyButton.setEnabled(false);

	}

	/**

	 * Returns a list of the ignore items

	 * 

	 * @return List<String>

	 */

	public List<String[]> getIgnoreItems() {

		ArrayList<String[]> ignoreItems = new ArrayList<String[]>();

		for (TableItem item : ignoreItemsTable.getItems()) {

			String[] itemData = { item.getText(0), item.getText(1) };

			ignoreItems.add(itemData);

		}

		return ignoreItems;

	}

	/**

	 * Sets the ignore items

	 * 

	 * @param ignoreItems

	 *            An ArrayList containing 2 element lists. The first element

	 *            contains the item type and the second element contains the

	 *            item text.

	 * @return void

	 */

	public void setIgnoreItems(List<String[]> ignoreItems) {

		ignoreItemsTable.removeAll();

		for (String[] ignoreItem : ignoreItems) {

			final TableItem newItemTableItem = new TableItem(ignoreItemsTable,

					SWT.BORDER);

			newItemTableItem.setText(0, ignoreItem[0]);

			newItemTableItem.setText(1, ignoreItem[1]);

		}

	}

}