/*

 * Copyright (c) 2010 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.pi.graphicsmemory;

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;

public class GraphicsMemoryStatisticsDialog {

	private Shell shell;

	private GridData gridData;

	private DecimalFormat formatKBytes = new DecimalFormat(Messages

			.getString("GraphicsMemoryStatisticsDialog.KBformat")); //$NON-NLS-1$

	private DecimalFormat formatBytes = new DecimalFormat(Messages

			.getString("GraphicsMemoryStatisticsDialog.BytesFormat")); //$NON-NLS-1$

	private GraphicsMemoryTrace trace;

	private double startTime;

	private double endTime;

	public GraphicsMemoryStatisticsDialog(Display display) {

		Group group;

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

		shell.setText(Messages

				.getString("GraphicsMemoryStatisticsDialog.statistics")); //$NON-NLS-1$

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

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

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

		trace = (GraphicsMemoryTrace) NpiInstanceRepository.getInstance()

				.activeUidGetTrace(GraphicsMemoryPlugin.PLUGIN_ID); //$NON-NLS-1$

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

		group.setText(Messages

				.getString("GraphicsMemoryStatisticsDialog.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();

		GraphicsMemoryTraceGraph graph = (GraphicsMemoryTraceGraph) trace

				.getTraceGraph(pageIndex); // since graph intervals are in

											// lockstep, any pageIndex will do

		GraphicsMemoryProcessTable table = graph.getGraphicsMemoryProcessTable();

		MaxGraphicsMemoryItem systemUseByInterval = trace

				.getSystemUseByInterval((long) (startTime * 1000.0),

						(long) (endTime * 1000.0));

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

		group.setText(Messages

				.getString("GraphicsMemoryStatisticsDialog.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("GraphicsMemoryStatisticsDialog.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.maxPrivate;

			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("GraphicsMemoryStatisticsDialog.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("GraphicsMemoryStatisticsDialog.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("GraphicsMemoryStatisticsDialog.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("GraphicsMemoryStatisticsDialog.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 privateKB = Messages

				.getString("GraphicsMemoryStatisticsDialog.notRecorded"); //$NON-NLS-1$

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

		String sharedKB = privateKB;

		String sharedBytes = privateBytes;

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

			float selectedMaxPrivate = 0;

			float selectedMaxShared = 0;

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

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

				if (selected[i] instanceof GraphicsMemoryProcess) {

					GraphicsMemoryProcess checked = (GraphicsMemoryProcess) selected[i];

					selectedMaxPrivate += checked.maxMemoryItem.maxPrivate;

					selectedMaxShared += checked.maxMemoryItem.maxShared;

				}

			}

			privateKB = formatKBytes.format(selectedMaxPrivate / 1024.0);

			privateBytes = formatBytes.format((long) selectedMaxPrivate);

			sharedKB = formatKBytes.format(selectedMaxShared / 1024.0);

			sharedBytes = formatBytes.format((long) selectedMaxShared);

		}

		textGrid(

				group,

				Messages.getString("GraphicsMemoryStatisticsDialog.private"), SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

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

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

		textGrid(

				group,

				Messages.getString("GraphicsMemoryStatisticsDialog.shared"), SWT.LEFT, SWT.CENTER, 1); //$NON-NLS-1$

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

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

		// create the Close button

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

		close.setText(Messages

				.getString("GraphicsMemoryStatisticsDialog.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.TIME_FORMAT.format(startTime)

				+ Messages

						.getString("GraphicsMemoryStatisticsDialog.interval1") + ProfileVisualiser.TIME_FORMAT.format(endTime) //$NON-NLS-1$

				+ Messages

						.getString("GraphicsMemoryStatisticsDialog.interval2") + ProfileVisualiser.TIME_FORMAT.format(endTime - startTime) //$NON-NLS-1$

				+ Messages

						.getString("GraphicsMemoryStatisticsDialog.interval3"); //$NON-NLS-1$

	}

}