/*

 * 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.actions;

import java.text.DecimalFormat;

import java.util.Enumeration;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.FocusAdapter;

import org.eclipse.swt.events.FocusEvent;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

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.Event;

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.PIChangeEvent;

import com.nokia.carbide.cpp.internal.pi.manager.PluginInitialiser;

import com.nokia.carbide.cpp.internal.pi.plugin.model.IEventListener;

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

public class TimeSetDialog {

	private Shell shell;

	private Label label;

	private Text startTimeText;

	private Text endTimeText;

	private Label labelMsg;

	private Button ok;

	private Button cancel;

	private GridData gridData;

	private double startTime;

	private double endTime;

	private DecimalFormat timeFormat = new DecimalFormat(Messages.getString("TimeSetDialog.decimalFormat")); //$NON-NLS-1$

	public TimeSetDialog(Display display, double start, double end)

	{

		this.startTime = start;

		this.endTime   = end;

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

		shell.setText(Messages.getString("TimeSetDialog.selectInterval")); //$NON-NLS-1$

		shell.setLayout(new GridLayout(2, true));

		// create the start time label and input box

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

		label.setText(Messages.getString("TimeSetDialog.startTime")); //$NON-NLS-1$

		label.setFont(PIPageEditor.helvetica_9);

		startTimeText = new Text(shell, SWT.BORDER);

		gridData = new GridData(GridData.FILL_HORIZONTAL);

		startTimeText.setLayoutData(gridData);

		startTimeText.setFont(PIPageEditor.helvetica_9);

		startTimeText.setData(Messages.getString("TimeSetDialog.startMustBeFloat")); //$NON-NLS-1$

		startTimeText.setText(timeFormat.format(startTime));

		// add the listeners

		startTimeText.addFocusListener(new FocusAdapter() {

			public void focusLost(FocusEvent e) {

				startTime = convert(startTimeText, startTime);

				startTimeText.setText(timeFormat.format(startTime));

			}

		});

		startTimeText.addSelectionListener(new SelectionAdapter() {

			public void widgetDefaultSelected(SelectionEvent e) {

				startTime = convert(startTimeText, startTime);

				startTimeText.setText(timeFormat.format(startTime));

			}

		});

		startTimeText.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent arg0) {

				startTime = convert(startTimeText, startTime);

				checkOk();

			}

		});

		// create the start time label and input box

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

		label.setText(Messages.getString("TimeSetDialog.endTime")); //$NON-NLS-1$

		label.setFont(PIPageEditor.helvetica_9);

		endTimeText = new Text(shell, SWT.BORDER);

		gridData = new GridData(GridData.FILL_HORIZONTAL);

		endTimeText.setLayoutData(gridData);

		endTimeText.setData(Messages.getString("TimeSetDialog.endMustBeFloat")); //$NON-NLS-1$

		endTimeText.setFont(PIPageEditor.helvetica_9);

		endTimeText.setText(timeFormat.format(endTime));

		// add the listeners

		endTimeText.addFocusListener(new FocusAdapter() {

			public void focusLost(FocusEvent e) {

				endTime = convert(endTimeText, endTime);

				endTimeText.setText(timeFormat.format(endTime));

			}

		});

		endTimeText.addSelectionListener(new SelectionAdapter() {

			public void widgetDefaultSelected(SelectionEvent e) {

				endTime = convert(endTimeText, endTime);

				endTimeText.setText(timeFormat.format(endTime));

			}

		});

		endTimeText.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent arg0) {

				endTime = convert(endTimeText, endTime);

				checkOk();

			}

		});

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

		gridData = new GridData(GridData.FILL_BOTH);

		gridData.horizontalSpan = 2;

		gridData.verticalAlignment = GridData.CENTER;

		label.setLayoutData(gridData);

		double maxEndTime = PIPageEditor.currentPageEditor().getMaxEndTime(); 

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

		gridData = new GridData(GridData.FILL_BOTH);

		gridData.horizontalSpan = 2;

		gridData.verticalAlignment = GridData.CENTER;

		labelMsg.setLayoutData(gridData);

		labelMsg.setFont(PIPageEditor.helvetica_9);

		labelMsg.setText(Messages.getString("TimeSetDialog.maxEndTime1") + maxEndTime + Messages.getString("TimeSetDialog.maxEndTime2")); //$NON-NLS-1$ //$NON-NLS-2$

		// create the OK button

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

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

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);

		ok.setLayoutData(gridData);

		ok.addSelectionListener(new SelectionListener(){

			public void widgetSelected(SelectionEvent e) {

				PIPageEditor.currentPageEditor().setLocalTime(startTime, endTime);

				PIChangeEvent.action("changeSelection"); //$NON-NLS-1$

				// after the graphs have been updated, notify plugins that might have tables but no graphs

        		Enumeration enu = PluginInitialiser.getPluginInstances(

        									"com.nokia.carbide.cpp.internal.pi.plugin.model.IEventListener"); //$NON-NLS-1$

        		if (enu != null) {

        			Event event = new Event();

        			event.start = (int) (startTime * 1000);

        			event.end   = (int) (endTime   * 1000);

            		while (enu.hasMoreElements())

            		{

            			IEventListener plugin = (IEventListener)enu.nextElement();

            			plugin.receiveEvent("changeSelection", event); //$NON-NLS-1$

            		}

        		}

				shell.close();

			}

			public void widgetDefaultSelected(SelectionEvent e) {

				widgetSelected(e);

			}

		});

		// create the Cancel button

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

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

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);

		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 void checkOk() {

		double maxEndTime = PIPageEditor.currentPageEditor().getMaxEndTime(); 

		boolean isOk = false;

		if (startTime > endTime) {

			labelMsg.setText(Messages.getString("TimeSetDialog.endTimeMustBeGreater")); //$NON-NLS-1$

			labelMsg.setForeground(shell.getDisplay().getSystemColor(SWT.COLOR_RED));

		} else if (!isValidPositive(startTimeText) || !isValidPositive(endTimeText)) {

			labelMsg.setText(Messages.getString("TimeSetDialog.timesMustBePositiveValues")); //$NON-NLS-1$

			labelMsg.setForeground(shell.getDisplay().getSystemColor(SWT.COLOR_RED));

		} else if (startTime > maxEndTime || endTime > maxEndTime) {

			labelMsg.setText(Messages.getString("TimeSetDialog.maxEndTime1") + maxEndTime + Messages.getString("TimeSetDialog.maxEndTime2")); //$NON-NLS-1$ //$NON-NLS-2$

			labelMsg.setForeground(shell.getDisplay().getSystemColor(SWT.COLOR_RED));

		} else {

			isOk = true;

			labelMsg.setText(Messages.getString("TimeSetDialog.maxEndTime1") + maxEndTime + Messages.getString("TimeSetDialog.maxEndTime2")); //$NON-NLS-1$ //$NON-NLS-2$

			labelMsg.setForeground(shell.getDisplay().getSystemColor(SWT.COLOR_BLACK));

		}

		ok.setEnabled(isOk);

	}

	private double convert(Text text, double currentTime)

	{

		double new_double;

		// convert, catch (NumberFormatException e1)

		try {

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

			if (new_double == -0.0)

				currentTime = 0.0f;

			else if (new_double >= 0)

				currentTime = new_double;

		} catch (NumberFormatException exc) {

			// just keep the old value

		}

		return currentTime;

	}

	private boolean isValidPositive(Text text) {

		try {

			return Double.parseDouble(text.getText().replace(',','.')) >= 0;

		} catch (NumberFormatException exc) {

			return false;

		}

	}

	public void dispose()

	{

		if (this.shell != null) {

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

				this.shell.close();				

			}

			this.shell.dispose();

		}

		this.shell = null;

	}

}