/*

 * 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.wizards.ui;

import java.io.File;

import java.io.IOException;

import org.eclipse.swt.SWT;

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.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Combo;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.FileDialog;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.PlatformUI;

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

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.CarbidePiWizardHelpIds;

public class NewPIWizardPageInputTask

extends NewPIWizardPage

implements INewPIWizardSettings

{

	private final static String UID_PROPERTY= ".uid"; //$NON-NLS-1$

	private final static String DAT_EXTENSION= "dat"; //$NON-NLS-1$

	private boolean visableBefore = false;

	protected NewPIWizardPageInputTask(final NewPIWizard wizard) {

		super(Messages.getString("NewPIWizardPageSampleFile.name")); //$NON-NLS-1$

		setTitle(Messages.getString("NewPIWizardPageSampleFile.title")); //$NON-NLS-1$

	    setDescription(Messages.getString("NewPIWizardPageSampleFile.description")); //$NON-NLS-1$

	}

	// controls

	Composite container;

	private Text sampleFileTexti;

	private Combo sampleFileCombo;

	public void createControl(Composite parent) {

		super.createControl(parent);

		container = new Composite(parent, SWT.NULL);

		container.setData(UID_PROPERTY, "container"); //$NON-NLS-1$

		GridLayout layout = new GridLayout();

		container.setLayout(layout);

		layout.numColumns = 1;

		layout.verticalSpacing = 9;

		Label labelSampleFile = new Label(container, SWT.NONE);

		labelSampleFile.setText(Messages.getString("NewPIWizardPageSampleFile.dat.file.name")); //$NON-NLS-1$

		// subcomposite with textbox/button

		Composite subContainer = new Composite(container, SWT.NULL);

		subContainer.setData(UID_PROPERTY, "subContainer"); //$NON-NLS-1$

		GridLayout subLayout = new GridLayout();

		subContainer.setLayout(subLayout);

		subContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

		subLayout.numColumns = 2;

		subLayout.verticalSpacing = 9;

		/*

		sampleFileText = new Text(subContainer, SWT.BORDER | SWT.SINGLE);

		sampleFileText.setData(UID_PROPERTY, "sampleFileText"); //$NON-NLS-1$

		sampleFileText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

		sampleFileText.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				// write back to our status

				NewPIWizardSettings.getInstance().sampleFileName = sampleFileText.getText();

				NewPIWizardSettings.getInstance().sampleFileNameModifiedNanoTime = System.nanoTime();

				validatePage();

			}

		});*/

		sampleFileCombo = new Combo(subContainer, SWT.BORDER | SWT.SINGLE);

		sampleFileCombo.setData(UID_PROPERTY, "sampleFileText"); //$NON-NLS-1$

		sampleFileCombo.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

		sampleFileCombo.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				// write back to our status

				NewPIWizardSettings.getInstance().sampleFileName = sampleFileCombo.getText();

				NewPIWizardSettings.getInstance().sampleFileNameModifiedNanoTime = System.nanoTime();

				validatePage();

			}

		});

		Button button = new Button(subContainer, SWT.PUSH);

		button.setText(Messages.getString("NewPIWizardPageSampleFile.browse")); //$NON-NLS-1$

		button.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				handleBrowse();

			}

		});

		// top tap get focus

		sampleFileCombo.setFocus();

		setControl(container);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), CarbidePiWizardHelpIds.PI_IMPORT_WIZARD_INPUT);

	}

	public void validatePage() {

		if (sampleFileCombo.getText() == null || sampleFileCombo.getText().length() < 1) {

			updateStatus(null);

			setPageComplete(false);

			return;		// blank should be OK, consistent with Eclipse guideline

		}

		int dotLoc = sampleFileCombo.getText().lastIndexOf('.');

		if (dotLoc != -1) {

			String ext = sampleFileCombo.getText().substring(dotLoc + 1);

			if (ext.equalsIgnoreCase(DAT_EXTENSION) == false) {

				updateStatus(Messages.getString("NewPIWizardPageSampleFile.dat.file.extension.must.be.dat")); //$NON-NLS-1$

				return;

			}

		}

		if (!(new File(sampleFileCombo.getText()).exists())) {

			updateStatus(Messages.getString("NewPIWizardPageSampleFile.dat.file.name.does.not.exist")); //$NON-NLS-1$

			return;

		}

		if (!(new File(sampleFileCombo.getText()).isFile())) {

			updateStatus(Messages.getString("NewPIWizardPageSampleFile.dat.must.be.a.file")); //$NON-NLS-1$

			return;		

		}

		try {

			((NewPIWizard)getWizard()).setTraceSet(new StreamFileParser(new File(sampleFileCombo.getText())).allTraceType());

		} catch (IOException e) {

			// just ignore

		}

		setPageComplete(true);

		updateStatus(null);

	}

	private void updateStatus(String message) {

		// need to enable finish, setPageComplete eventually check global states

		setErrorMessage(message);

		setPageComplete(message == null);

	}

	private void handleBrowse() {

		FileDialog dialog = new FileDialog(getShell());

		String[] datExtensions = {"*.dat", //$NON-NLS-1$

//									"*.base64",

									"*.*"}; //$NON-NLS-1$

		String[] datNames = {Messages.getString("NewPIWizardPageSampleFile.sample.filter.name"), //$NON-NLS-1$

//								"Profiler Sample Files (*.base64)",

								Messages.getString("NewPIWizardPageSampleFile.all.filter.name")}; //$NON-NLS-1$

		dialog.setFilterExtensions(datExtensions);

		dialog.setFilterNames(datNames);

		// Try guiding user to path user is trying to fill

		File clueFile = new File(sampleFileCombo.getText());

		String cluePath = null;

		if (clueFile.isDirectory()) {

			cluePath = clueFile.getAbsolutePath();

		} else {

			cluePath = clueFile.getParent();

		}

		if (cluePath != null) {

			dialog.setFilterPath(cluePath);

		}

		String filePath = dialog.open();

		if (filePath != null) {

			if (filePath.length() > 0) {

				sampleFileCombo.setText(filePath);

			}

		}		

	}

	public void setupPageFromFromNewPIWizardSettings() {

		String[] items = NewPIWizardSettings.getInstance().sampleFileNames;

		if (items != null){

			sampleFileCombo.setItems(items);

			sampleFileCombo.select(0);

		}

	}

	public void setVisible(boolean visable) {

		super.setVisible(visable);

		if (visable) {

			// block the text if it's wrong on startup, so user know what's wrong

			if (visableBefore == false && getErrorMessage() != null) {

				sampleFileCombo.select(0);

			}

		}

		visableBefore = visable;

	}

}