/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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.nokia.carbide.cpp.debug.crashdebugger.ui;

import java.math.BigInteger;

import org.eclipse.jface.dialogs.StatusDialog;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.graphics.Point;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.PlatformUI;

import com.nokia.carbide.cpp.debug.crashdebugger.HelpIds;

public class DumpMemoryDialog extends StatusDialog {

	private Text address;

	private String enteredAddress = ""; //$NON-NLS-1$

	private Text length;

	private String enteredLength = ""; //$NON-NLS-1$

	public DumpMemoryDialog(Shell parent) {

		super(parent);

		setShellStyle(getShellStyle() | SWT.RESIZE);

		setTitle(Messages.getString("DumpMemoryDialog.2")); //$NON-NLS-1$

	}

	/**

	 * @see Windows#configureShell

	 */

	protected void configureShell(Shell newShell) {

		super.configureShell(newShell);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, HelpIds.MEMORY_DIALOG);

	}		

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)

	 */

	protected Control createDialogArea(Composite parent) {

		initializeDialogUnits(parent);

		Composite composite= (Composite) super.createDialogArea(parent);

		GridLayout layout = (GridLayout) composite.getLayout();

		layout.numColumns = 2;

		final Label addressLabel = new Label(composite, SWT.NONE);

		addressLabel.setText(Messages.getString("DumpMemoryDialog.3")); //$NON-NLS-1$

		GridData data = new GridData();

		data.horizontalSpan = 1;

		addressLabel.setLayoutData(data);

		addressLabel.setToolTipText(Messages.getString("DumpMemoryDialog.4")); //$NON-NLS-1$

		address = new Text(composite, SWT.SINGLE | SWT.BORDER);

		data = new GridData(GridData.FILL_HORIZONTAL);

		data.horizontalSpan = 1;

		address.setLayoutData(data);

		address.setToolTipText(Messages.getString("DumpMemoryDialog.5")); //$NON-NLS-1$

		address.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				checkValues();

			}

		});

		final Label lengthLabel = new Label(composite, SWT.NONE);

		lengthLabel.setText(Messages.getString("DumpMemoryDialog.6")); //$NON-NLS-1$

		data = new GridData();

		data.horizontalSpan = 1;

		lengthLabel.setLayoutData(data);

		lengthLabel.setToolTipText(Messages.getString("DumpMemoryDialog.7")); //$NON-NLS-1$

		length = new Text(composite, SWT.SINGLE | SWT.BORDER);

		data = new GridData(GridData.FILL_HORIZONTAL);

		data.horizontalSpan = 1;

		length.setLayoutData(data);

		length.setToolTipText(Messages.getString("DumpMemoryDialog.8")); //$NON-NLS-1$

		length.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				checkValues();

			}

		});

		applyDialogFont(composite);		

		return composite;

	}

	public void create() {

		super.create();

		checkValues();

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.window.Window#getInitialSize()

	 */

	protected Point getInitialSize() {

		Point size = super.getInitialSize();

		size.x *= 2;

		return size;

	}

	protected void okPressed() {

		enteredAddress = address.getText().trim();

		if (enteredAddress.toLowerCase().startsWith("0x")) { //$NON-NLS-1$

			enteredAddress = enteredAddress.substring(2, enteredAddress.length());

		}

		enteredLength = length.getText().trim();

		if (enteredLength.toLowerCase().startsWith("0x")) { //$NON-NLS-1$

			enteredLength = enteredLength.substring(2, enteredLength.length());

		}

		super.okPressed();

	}

	protected void checkValues() {

		StatusInfo status= new StatusInfo();

		status.setOK();

		String addr = address.getText().trim();

		if (addr.length() > 0) {

			boolean goodValue = false;

			if (addr.toLowerCase().startsWith("0x")) { //$NON-NLS-1$

				addr = addr.substring(2, addr.length());

			}

			if (addr.length() <= 8) {

				try {

					// if this doesn't throw an exception then we

					// have a good hex value

					BigInteger ignore = new BigInteger(addr, 16);

					goodValue = true;

				} catch (NumberFormatException e) {

				}

			}

			if (!goodValue) {

				status.setError(Messages.getString("DumpMemoryDialog.12")); //$NON-NLS-1$

			}

		}

		else {

			status.setError(Messages.getString("DumpMemoryDialog.13")); //$NON-NLS-1$

		}

		if (status.isOK()) {

			String len = length.getText().trim();

			if (len.length() > 0) {

				boolean goodValue = false;

				if (len.toLowerCase().startsWith("0x")) { //$NON-NLS-1$

					len = len.substring(2, len.length());

				}

				if (len.length() <= 8) {

					try {

						// if this doesn't throw an exception then we

						// have a good hex value

						BigInteger ignore = new BigInteger(len, 16);

						goodValue = true;

					} catch (NumberFormatException e) {

					}

				}

				if (!goodValue) {

					status.setError(Messages.getString("DumpMemoryDialog.15")); //$NON-NLS-1$

				}

			}

			else {

				status.setError(Messages.getString("DumpMemoryDialog.16")); //$NON-NLS-1$

			}

		}

		updateStatus(status);		

	}

	public String getAddress() {

		return enteredAddress;

	}

	public String getLength() {

		return enteredLength;

	}

}