/*

* 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 "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.s60tools.memspy.ui.wizards;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

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.Combo;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.FileDialog;

import org.eclipse.swt.widgets.Group;

import org.eclipse.ui.PlatformUI;

import com.nokia.s60tools.memspy.model.UserEnteredData;

import com.nokia.s60tools.memspy.model.UserEnteredData.ValueTypes;

import com.nokia.s60tools.memspy.resources.HelpContextIDs;

import com.nokia.s60tools.ui.wizards.S60ToolsWizardPage;

public class ExportFileNamePage extends S60ToolsWizardPage implements ModifyListener, SelectionListener{

	// UI-components

	private Combo fileCombo;

	private Button buttonBrowseFile;

	// Strings

	private final static String  REPORT_LOCATION_TEXT 		= "File Location";

	private final static String  BROWSE_TEXT		 		= "Browse...";

	private final static String  FILE_SELECTION_DIALOG_TEXT = "Define location for exported file.";

	private final static String  OUTPUT_FILE_TEXT 			= "Output file";

	private final static String  DESCRIPTION_TEXT 			= "Define file name for exported comparison report file(xls-file).";

	/*

	 * (non-Javadoc)

	 * @see com.nokia.s60tools.ui.wizards.S60ToolsWizardPage#setInitialFocus()

	 */

    public void setInitialFocus() {

    	fileCombo.setFocus();

	}

    /*

     * (non-Javadoc)

     * @see com.nokia.s60tools.ui.wizards.S60ToolsWizardPage#recalculateButtonStates()

     */

    public void recalculateButtonStates() {

	}

    /**

     * ExportFileNamePage

     * constructor

     * @param pageName name of the page

     */

    protected ExportFileNamePage(String pageName) {

              super(pageName);

              setTitle(OUTPUT_FILE_TEXT);

              setDescription(DESCRIPTION_TEXT);

    }

    public void createControl(Composite parent) {

 		// Radio button group

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

 		// create the desired layout for this wizard page

 		GridLayout gl = new GridLayout();

 		gl.numColumns = 1;

 		composite.setLayout(gl);

 		// file location group

		Group fileLocationGroup = new Group(composite, SWT.NONE);

		fileLocationGroup.setLayoutData(new GridData(GridData.FILL_BOTH));

		GridLayout fileLocationLayout = new GridLayout();

		fileLocationLayout.numColumns = 2;

		fileLocationGroup.setLayout( fileLocationLayout );

		fileLocationGroup.setText( REPORT_LOCATION_TEXT );

		// file combo

		fileCombo = new Combo(fileLocationGroup, SWT.BORDER);

		GridData fileDataGrid = new GridData(GridData.FILL_HORIZONTAL);

		fileCombo.setLayoutData(fileDataGrid);

		fileCombo.addModifyListener(this);

		// browse button

		buttonBrowseFile = new Button(fileLocationGroup, SWT.PUSH);

		buttonBrowseFile.setText(BROWSE_TEXT);

		buttonBrowseFile.addSelectionListener(this);

		// load previous value

		this.loadUserEnteredData();

		setHelps();

		setInitialFocus();

		setControl(composite);

     }

    /*

     * (non-Javadoc)

     * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)

     */

	public void modifyText(ModifyEvent event) {

		if (event.widget.equals(fileCombo)) {

			try {

				getWizard().getContainer().updateButtons();

			} catch (Exception e) {

			}

		}		

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)

	 */

	public void widgetDefaultSelected(SelectionEvent arg0) {

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)

	 */

	public void widgetSelected(SelectionEvent e) {

		if (e.widget == buttonBrowseFile) {

			// open file dialog for selecting a crash file

			FileDialog dialog = new FileDialog(this.getShell(), SWT.SAVE );

			dialog.setText(FILE_SELECTION_DIALOG_TEXT);

			String[] filterExt = { "*.xls" };

			dialog.setFilterExtensions(filterExt);

			dialog.setFilterPath(fileCombo.getText());

			String result = dialog.open();

			// add xls-end if needed

			if( !result.endsWith( ".xls" ) ){

				result += ".xls";

			}

			fileCombo.setText(result);

		}

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.jface.wizard.WizardPage#canFlipToNextPage()

	 */

	public boolean canFlipToNextPage() {

 		if( fileCombo.getText() != "" ){

 			return true;

 		}

 		else {

 			return false;

 		}

	}

	/**

	 * loadUserEnteredData

	 * loads previous values into UI components

	 */

	private void loadUserEnteredData(){

		UserEnteredData data = new UserEnteredData();

 		// Restore previous values to file combobox

		String[] lastUsedFiles = data.getPreviousValues(ValueTypes.OUTPUT_FILE);

		if (lastUsedFiles != null) {

			fileCombo.setItems(lastUsedFiles);

			fileCombo.select(0);

		}

 	}

	/**

	 * saveUserEnteredData

	 * Saves current user entered data from UI components

	 */

	public void saveUserEnteredData(){

		UserEnteredData data = new UserEnteredData();

		// Save file combo box

		String item = fileCombo.getText();

		data.saveValue(ValueTypes.OUTPUT_FILE, item);

	}

	/**

	 * getOutputFileName

	 * @return output file name

	 */

	public String getOutputFileName(){

		return fileCombo.getText();

	}

	/**

	 * Sets this page's context sensitive helps

	 *

	 */

	protected void setHelps() {

		PlatformUI.getWorkbench().getHelpSystem().setHelp( fileCombo, HelpContextIDs.MEMSPY_IMPORT_COMPARE);

		PlatformUI.getWorkbench().getHelpSystem().setHelp( buttonBrowseFile, HelpContextIDs.MEMSPY_IMPORT_COMPARE);

		PlatformUI.getWorkbench().getHelpSystem().setHelp( buttonBrowseFile, HelpContextIDs.MEMSPY_IMPORT_COMPARE);

	}

}