/*

 * 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.memory.actions;

import java.text.DecimalFormat;

import org.eclipse.swt.SWT;

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.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Group;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

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

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

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

import com.nokia.carbide.cpp.pi.memory.MaxMemoryItem;

import com.nokia.carbide.cpp.pi.memory.MemThread;

import com.nokia.carbide.cpp.pi.memory.MemThreadTable;

import com.nokia.carbide.cpp.pi.memory.MemTrace;

import com.nokia.carbide.cpp.pi.memory.MemTraceGraph;

import com.nokia.carbide.cpp.pi.memory.Messages;

public class MemoryStatisticsDialog {

	private Shell shell;

	private GridData gridData;

	private DecimalFormat formatKBytes = new DecimalFormat(Messages.getString("MemoryStatisticsDialog.KBformat")); //$NON-NLS-1$

	private DecimalFormat formatBytes  = new DecimalFormat(Messages.getString("MemoryStatisticsDialog.BytesFormat")); //$NON-NLS-1$

	private MemTrace trace;

	private double startTime;

	private double endTime;

	public MemoryStatisticsDialog(Display display)

	{

		Group group;

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

		shell.setText(Messages.getString("MemoryStatisticsDialog.statistics")); //$NON-NLS-1$

		shell.setLayout(new GridLayout(3, false));

    	startTime = PIPageEditor.currentPageEditor().getStartTime();

    	endTime   = PIPageEditor.currentPageEditor().getEndTime();

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

//		group = new Group(shell, SWT.SHADOW_NONE);

//		group.setText(Messages.getString("MemoryStatisticsDialog.memoryModel")); //$NON-NLS-1$

//		group.setFont(PIPageEditor.helvetica_9);

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

//		gridData.horizontalSpan = 3;

//		group.setLayoutData(gridData);

//		group.setLayout(new GridLayout(3, false));//new FillLayout());

//		

//		String model = ""; //$NON-NLS-1$

//		if (trace.getMemoryModel() == MemTrace.MEMORY_MULTIPLE)

//			model = Messages.getString("MemoryStatisticsDialog.multiple"); //$NON-NLS-1$

//		else if (trace.getMemoryModel() == MemTrace.MEMORY_MOVING)

//			model = Messages.getString("MemoryStatisticsDialog.moving"); //$NON-NLS-1$

//		else if (trace.getMemoryModel() == MemTrace.MEMORY_DIRECT)

//			model = Messages.getString("MemoryStatisticsDialog.direct"); //$NON-NLS-1$

//		else

//			model = Messages.getString("MemoryStatisticsDialog.notRecorded"); //$NON-NLS-1$

//

//		textGrid(group, model, SWT.CENTER, SWT.CENTER, 3); //$NON-NLS-1$

		group = new Group(shell, SWT.SHADOW_NONE);

		group.setText(Messages.getString("MemoryStatisticsDialog.interval")); //$NON-NLS-1$

		group.setFont(PIPageEditor.helvetica_9);

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

		gridData.horizontalSpan = 3;

		group.setLayoutData(gridData);

		group.setLayout(new GridLayout(3, false));//new FillLayout());

		textGrid(group, showTimeInterval(startTime, endTime), SWT.CENTER, SWT.CENTER, 3);

		int pageIndex = PIPageEditor.currentPageIndex();

		MemTraceGraph graph = (MemTraceGraph) trace.getTraceGraph(pageIndex); // since graph intervals are in lockstep, any pageIndex will do

		MemThreadTable table = graph.getMemThreadTable();

		MaxMemoryItem systemUseByInterval = trace.getSystemUseByInterval((long) (startTime * 1000.0), (long) (endTime * 1000.0));

		group = new Group(shell, SWT.NONE);

		group.setText(Messages.getString("MemoryStatisticsDialog.onDevice")); //$NON-NLS-1$

		group.setFont(PIPageEditor.helvetica_9);

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

		gridData.horizontalSpan = 3;

		group.setLayoutData(gridData);

		group.setLayout(new GridLayout(3, false));//new FillLayout());

		String usedKB     = Messages.getString("MemoryStatisticsDialog.notRecorded"); //$NON-NLS-1$

		String usedBytes  = ""; //$NON-NLS-1$

		String freeKB     = usedKB;

		String freeBytes  = usedBytes;

		String totalKB    = usedKB;

		String totalBytes = usedBytes;

		if ((long) (endTime * 1000.0 + 0.5) >= trace.getFirstSampleNumber()) {

			long deviceTotalMemory = systemUseByInterval.maxTotal;

			long deviceUsedMemory  = systemUseByInterval.maxChunks;

			usedKB     = formatKBytes.format(deviceUsedMemory / 1024.0);

			usedBytes  = formatBytes.format(deviceUsedMemory);

			freeKB     = formatKBytes.format((deviceTotalMemory - deviceUsedMemory) / 1024.0);

			freeBytes  = formatBytes.format(deviceTotalMemory - deviceUsedMemory);

			totalKB    = formatKBytes.format(deviceTotalMemory / 1024.0);

			totalBytes = formatBytes.format(deviceTotalMemory);

		}

		textGrid(group, Messages.getString("MemoryStatisticsDialog.used"), SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

		textGrid(group, usedKB, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, usedBytes, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, Messages.getString("MemoryStatisticsDialog.free"), SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

		textGrid(group, freeKB, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, freeBytes, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, Messages.getString("MemoryStatisticsDialog.total"),  SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

		textGrid(group, totalKB, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, totalBytes, SWT.RIGHT, SWT.CENTER, 1);

		group = new Group(shell, SWT.NONE);

		group.setText(Messages.getString("MemoryStatisticsDialog.currentSelection")); //$NON-NLS-1$

		group.setFont(PIPageEditor.helvetica_9);

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

		gridData.horizontalSpan = 3;

		group.setLayoutData(gridData);

		group.setLayout(new GridLayout(3, false));//new FillLayout());

		String chunkKB    = Messages.getString("MemoryStatisticsDialog.notRecorded"); //$NON-NLS-1$

		String chunkBytes = ""; //$NON-NLS-1$

		String stackKB    = chunkKB;

		String stackBytes = chunkBytes;

		if ((long) (endTime * 1000.0 + 0.5) >= trace.getFirstSampleNumber()) {

			float selectedMaxChunks    = 0;

			float selectedMaxStackHeap = 0;

			Object[] selected = table.getTableViewer().getCheckedElements();

			for (int i = 0; i < selected.length; i++) {

				if (selected[i] instanceof MemThread) {

					MemThread checked = (MemThread) selected[i];

					selectedMaxChunks    += checked.maxMemoryItem.maxChunks;

					selectedMaxStackHeap += checked.maxMemoryItem.maxStackHeap;

				}

			}

			chunkKB    = formatKBytes.format(selectedMaxChunks / 1024.0);

			chunkBytes = formatBytes.format((long) selectedMaxChunks);

			stackKB    = formatKBytes.format(selectedMaxStackHeap / 1024.0);

			stackBytes = formatBytes.format((long) selectedMaxStackHeap);

		}

		textGrid(group, Messages.getString("MemoryStatisticsDialog.chunks"),  SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

		textGrid(group, chunkKB, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, chunkBytes, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, Messages.getString("MemoryStatisticsDialog.stackHeap"), SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

		textGrid(group, stackKB, SWT.RIGHT, SWT.CENTER, 1);

		textGrid(group, stackBytes, SWT.RIGHT, SWT.CENTER, 1);

		// create the Close button

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

		close.setText(Messages.getString("MemoryStatisticsDialog.close")); //$NON-NLS-1$

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

		gridData.minimumWidth = 60;

		gridData.horizontalSpan = 3;

		close.setLayoutData(gridData);

		close.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 textGrid(Composite parent, String text, int labelStyle, int gridStyle, int gridSpan)

	{

		Label label = new Label(parent, labelStyle);

		label.setFont(PIPageEditor.helvetica_9);

		label.setText(text);

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

		gridData.horizontalSpan = gridSpan;

		label.setLayoutData(gridData);		

	}

	public void dispose()

	{

		if (this.shell != null) {

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

				this.shell.close();				

			}

			this.shell.dispose();

		}

		this.shell = null;

	}

	private static String showTimeInterval(double startTime, double endTime)

	{

		return ProfileVisualiser.timeFormat.format(startTime)

		     + Messages.getString("MemoryStatisticsDialog.interval1") + ProfileVisualiser.timeFormat.format(endTime) //$NON-NLS-1$

		     + Messages.getString("MemoryStatisticsDialog.interval2") + ProfileVisualiser.timeFormat.format(endTime - startTime) //$NON-NLS-1$

		     + Messages.getString("MemoryStatisticsDialog.interval3"); //$NON-NLS-1$

	}

}