/*

 * 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.internal.pi.power.actions;

import java.text.DecimalFormat;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.FocusAdapter;

import org.eclipse.swt.events.FocusEvent;

import org.eclipse.swt.events.SelectionAdapter;

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.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import com.nokia.carbide.cpp.internal.pi.analyser.NpiInstanceRepository;

import com.nokia.carbide.cpp.pi.editors.PIPageEditor;

import com.nokia.carbide.cpp.pi.power.PwrTrace;

public class PowerSettingsDialog {

	private Shell shell;

	private GridData gridData;

	private PwrTrace trace;

	private int batterySize;

	private Text voltageText;

	private Text batteryText;

	private DecimalFormat voltageFormat = new DecimalFormat(Messages.getString("PowerSettingsDialog.voltageFormat")); //$NON-NLS-1$

//	private DecimalFormat batteryFormat = new DecimalFormat("###0");

	private float newVoltage;

	private float newBatterySize;

	public PowerSettingsDialog(Display display)

	{

		shell = new Shell(display, SWT.APPLICATION_MODAL | SWT.DIALOG_TRIM);

		shell.setText(Messages.getString("PowerSettingsDialog.powerSettingsTitle")); //$NON-NLS-1$

		shell.setLayout(new GridLayout(4, false));

		trace = (PwrTrace)NpiInstanceRepository.getInstance().activeUidGetTrace("com.nokia.carbide.cpp.pi.power"); //$NON-NLS-1$

		float voltage = trace.getVoltage();

		newVoltage = voltage;

		Label voltLabel = new Label(shell, SWT.LEFT);

		voltLabel.setFont(PIPageEditor.helvetica_9);

		voltLabel.setText(Messages.getString("PowerSettingsDialog.voltageLabel")); //$NON-NLS-1$

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

		gridData.horizontalSpan = 2;

		voltLabel.setLayoutData(gridData);

		voltageText = new Text(shell, SWT.BORDER | SWT.RIGHT);

		voltageText.setFont(PIPageEditor.helvetica_9);

		voltageText.setText(voltageFormat.format(voltage));

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

		gridData.minimumWidth = 60;

		voltageText.setLayoutData(gridData);

		Label voltUnitsLabel = new Label(shell, SWT.LEFT);

		voltUnitsLabel.setFont(PIPageEditor.helvetica_9);

		voltUnitsLabel.setText(Messages.getString("PowerSettingsDialog.voltageUnits")); //$NON-NLS-1$

		batterySize = (int) trace.getBatterySize();

		newBatterySize = batterySize;

		Label batteryLabel = new Label(shell, SWT.LEFT);

		batteryLabel.setFont(PIPageEditor.helvetica_9);

		batteryLabel.setText(Messages.getString("PowerSettingsDialog.batteryLabel")); //$NON-NLS-1$

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

		gridData.horizontalSpan = 2;

		batteryLabel.setLayoutData(gridData);

		batteryText = new Text(shell, SWT.BORDER | SWT.RIGHT);

		batteryText.setFont(PIPageEditor.helvetica_9);

		batteryText.setText("" + batterySize);//batteryFormat.format(batterySize)); //$NON-NLS-1$

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

		gridData.minimumWidth = 60;

		batteryText.setLayoutData(gridData);

		Label batteryUnitsLabel = new Label(shell, SWT.LEFT);

		batteryUnitsLabel.setFont(PIPageEditor.helvetica_9);

		batteryUnitsLabel.setText(Messages.getString("PowerSettingsDialog.batteryUnits")); //$NON-NLS-1$

		// add the voltage listeners

		voltageText.addFocusListener(new FocusAdapter() {

			public void focusLost(FocusEvent e) {

				double currentVoltage = convert(voltageText, trace.getVoltage(), 0, Float.MAX_VALUE, voltageFormat);

				newVoltage = (float) (Math.ceil(currentVoltage * 1000) / 1000.0);

			}

		});

		voltageText.addSelectionListener(new SelectionAdapter() {

			public void widgetDefaultSelected(SelectionEvent e) {

				double currentVoltage = convert(voltageText, trace.getVoltage(), 0, Float.MAX_VALUE, voltageFormat);

				newVoltage = (float) (Math.ceil(currentVoltage * 100) / 100.0);

			}

		});

		batteryText.addFocusListener(new FocusAdapter() {

			public void focusLost(FocusEvent e) {

				newBatterySize = convert(batteryText, (int)Math.ceil(trace.getBatterySize()), 0, Integer.MAX_VALUE); 

			}

		});

		batteryText.addSelectionListener(new SelectionAdapter() {

			public void widgetDefaultSelected(SelectionEvent e) {

				newBatterySize = convert(batteryText, (int)Math.ceil(trace.getBatterySize()), 0, Integer.MAX_VALUE); 

			}

		});

		Label line = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);

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

		gridData.horizontalSpan = 4;

		gridData.minimumHeight = 10;

		line.setLayoutData(gridData);

		// create the OK button

		Button ok = new Button(shell, SWT.NONE);

		ok.setText(Messages.getString("PowerSettingsDialog.ok")); //$NON-NLS-1$

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

		gridData.minimumWidth = 60;

		gridData.horizontalSpan = 2;

		ok.setLayoutData(gridData);

		ok.addSelectionListener(new SelectionListener(){

			public void widgetSelected(SelectionEvent e) {

				// Update plugins with actions, if voltage of battery size has changed

				boolean changedVoltage  = trace.getVoltage() != newVoltage;

				boolean changedSize     = trace.getBatterySize() != newBatterySize;

				int uid = NpiInstanceRepository.getInstance().activeUid();

				if (changedVoltage) {

					trace.setVoltage(newVoltage);

					trace.getPowerGraph(PIPageEditor.THREADS_PAGE,   uid).action("changeVoltage"); //$NON-NLS-1$

					trace.getPowerGraph(PIPageEditor.BINARIES_PAGE,  uid).action("changeVoltage"); //$NON-NLS-1$

					trace.getPowerGraph(PIPageEditor.FUNCTIONS_PAGE, uid).action("changeVoltage"); //$NON-NLS-1$

				}

				if (changedSize) {

					trace.setBatterySize(newBatterySize);

					trace.getPowerGraph(PIPageEditor.THREADS_PAGE,   uid).action("changeBatterySize"); //$NON-NLS-1$

					trace.getPowerGraph(PIPageEditor.BINARIES_PAGE,  uid).action("changeBatterySize"); //$NON-NLS-1$

					trace.getPowerGraph(PIPageEditor.FUNCTIONS_PAGE, uid).action("changeBatterySize"); //$NON-NLS-1$

				}

				shell.close();

			}

			public void widgetDefaultSelected(SelectionEvent e) {

				widgetSelected(e);

			}

		});

		// create the Cancel button

		Button cancel = new Button(shell, SWT.NONE);

		cancel.setText(Messages.getString("PowerSettingsDialog.cancel")); //$NON-NLS-1$

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

		gridData.minimumWidth = 60;

		gridData.horizontalSpan = 2;

		cancel.setLayoutData(gridData);

		cancel.addSelectionListener(new SelectionListener(){

			public void widgetSelected(SelectionEvent e) {

				shell.close();

			}

			public void widgetDefaultSelected(SelectionEvent e) {

				widgetSelected(e);

			}

		});

		shell.pack();

		shell.open();

		while (!shell.isDisposed()) {

			if (!shell.getDisplay().readAndDispatch()) {

				shell.getDisplay().sleep();

			}

		}

	}

	private double convert(Text text, double currentDouble, double minimum, double maximum, DecimalFormat format)

	{

		double new_double;

		// convert, catch (NumberFormatException e1)

		try {

			new_double = Double.parseDouble(text.getText().replace(',','.'));

			if (new_double >= 0)

				currentDouble = new_double;

		} catch (NumberFormatException exc) {

			// just keep the old value

		}

		if (currentDouble > maximum)

			currentDouble = maximum;

		else if (currentDouble < minimum)

			currentDouble = minimum;

		text.setText(format.format(currentDouble));

		return currentDouble;

	}

	private int convert(Text text, int currentInt, int minimum, int maximum)

	{

		int new_int;

		// convert, catch (NumberFormatException e1)

		try {

			new_int = Integer.parseInt(text.getText().replace(',','.'));

			if (new_int >= 0)

				currentInt = new_int;

		} catch (NumberFormatException exc) {

			// just keep the old value

		}

		if (currentInt > maximum)

			currentInt = maximum;

		else if (currentInt < minimum)

			currentInt = minimum;

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

		return currentInt;

	}

	public void dispose()

	{

		if (this.shell != null) {

			if (!this.shell.isDisposed()) {

				this.shell.close();				

			}

			this.shell.dispose();

		}

		this.shell = null;

	}

}