/*

 * 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.button.ui;

import java.util.ArrayList;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.jface.layout.GridDataFactory;

import org.eclipse.jface.layout.GridLayoutFactory;

import org.eclipse.jface.preference.IPreferenceStore;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Combo;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Group;

import org.eclipse.swt.widgets.Link;

import org.eclipse.ui.PlatformUI;

import com.nokia.carbide.cpp.pi.button.BupEventMapManager;

import com.nokia.carbide.cpp.pi.button.ButtonPlugin;

import com.nokia.carbide.cpp.pi.button.ComNokiaCarbidePiButtonHelpIDs;

import com.nokia.carbide.cpp.pi.button.IBupEventMap;

import com.nokia.carbide.cpp.pi.button.IBupEventMapProfile;

public class ButtonTabPage extends Composite {

	private ArrayList<IBupEventMapProfile> profiles = new ArrayList<IBupEventMapProfile>();

	// Controls

	private Composite content = null;

	private Group profileGroup = null;

	private Combo profileCombo = null;

	private Composite profileButtonComposite = null;

	private Composite importExportButtonComposite= null;

	private Button profileNewButton = null;

	private Button profileRemoveButton = null;

	private Button profileEditButton = null;

	private Link profileImportLink = null;

	private Link profileExportLink = null;

	private Group mappingGroup = null;

	private BupMapTableViewer mappingTableViewer = null;

	/**

	 * import XML and merge into workspace pref

	 */

	private void importXML() {

		ImportBupMapWizardDialog dialog = new ImportBupMapWizardDialog(getShell());

		dialog.open();

		refreshCombo();	// modified

	}

	/**

	 * export

	 */

	private void exportXML() {

		ExportBupMapWizardDialog dialog = new ExportBupMapWizardDialog(getShell());

		dialog.open();

	}

	public ButtonTabPage(Composite parent) {

		super(parent, SWT.NONE);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, ComNokiaCarbidePiButtonHelpIDs.PI_BUTTON_MAP_PREF_TAB);

		GridLayoutFactory layoutExpandBoth = GridLayoutFactory.fillDefaults();

		GridDataFactory gridDataExpandBoth = GridDataFactory.fillDefaults().grab(true, true);

		GridLayoutFactory layoutExpandHorizontal = GridLayoutFactory.swtDefaults();

		GridDataFactory gridDataExpandHorizontal = GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false);

		GridDataFactory gridDataButton = GridDataFactory.swtDefaults();

		layoutExpandBoth.applyTo(this);

		gridDataExpandBoth.applyTo(this);

		content = new Composite(this, SWT.NONE);

		layoutExpandBoth.applyTo(content);

		gridDataExpandBoth.applyTo(content);

		profileGroup = new Group (content, SWT.NONE);

		layoutExpandHorizontal.applyTo(profileGroup);

		gridDataExpandHorizontal.applyTo(profileGroup);

		profileGroup.setText(Messages.getString("ButtonTabPage.manageProfiles")); //$NON-NLS-1$

		profileCombo = new Combo (profileGroup, SWT.READ_ONLY);

		layoutExpandHorizontal.applyTo(profileCombo);

		gridDataExpandHorizontal.applyTo(profileCombo);

		profileCombo.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				refreshTableToCombo();

			}

		});

		profileButtonComposite = new Composite (profileGroup, SWT.NONE);

		layoutExpandHorizontal.copy().numColumns(3).applyTo(profileButtonComposite);

		gridDataExpandHorizontal.applyTo(profileButtonComposite);

		int maxWidth;

		profileNewButton = new Button(profileButtonComposite, SWT.NONE);

		profileNewButton.setText(Messages.getString("ButtonTabPage.duplicate")); //$NON-NLS-1$

		profileNewButton.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				BupProfileDuplicateDialog dialog = new BupProfileDuplicateDialog(getShell(), profiles.get(profileCombo.getSelectionIndex()));

				if (dialog.open() == BupProfileDuplicateDialog.OK) { 

					refreshCombo();

					profileCombo.select(BupEventMapManager.getInstance().getProfilesFromWorkspacePref().size() - 1);	// we cheat a bit by knowing addToWorkspace always append to the end

					refreshTableToCombo();	// current profile had been removed;

				}

			}

		});

		maxWidth = profileNewButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).x;

		profileEditButton = new Button(profileButtonComposite, SWT.NONE);

		profileEditButton.setText(Messages.getString("ButtonTabPage.Edit")); //$NON-NLS-1$

		profileEditButton.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				IBupEventMapProfile profile = profiles.get(profileCombo.getSelectionIndex());

				if (profile != null) {

					new BupProfileEditDialog(getShell(), profile).open();

					refreshTableToCombo();	// current profile may had changed

				}

			}

		});

		maxWidth = Math.max(maxWidth, profileEditButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).x);

		profileRemoveButton = new Button(profileButtonComposite, SWT.NONE);

		profileRemoveButton.setText(Messages.getString("ButtonTabPage.remove")); //$NON-NLS-1$

		profileRemoveButton.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				IBupEventMapProfile profile = profiles.get(profileCombo.getSelectionIndex());

				if (profile != null) {

					if(MessageDialog.openQuestion(getShell(), Messages.getString("ButtonTabPage.confirmRemovalHeading"), //$NON-NLS-1$

							Messages.getString("ButtonTabPage.profile") + profile.getProfileId() + Messages.getString("ButtonTabPage.confirmRemoval"))) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$

						if (BupEventMapManager.getInstance().canRemoveProfile(profile)) { 

							BupEventMapManager.getInstance().removeFromWorkspace(profile);

							refreshCombo();

							refreshTableToCombo();	// current profile had been removed;

						} else {

							MessageDialog.openInformation(getShell(), Messages.getString("ButtonTabPage.cannotRemoveProfile"), //$NON-NLS-1$

									Messages.getString("ButtonTabPage.profile") + profile.getProfileId() + Messages.getString("ButtonTabPage.isStillOpen")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$

						}

					}

				}

			}

		});

		maxWidth = Math.max(maxWidth, profileRemoveButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).x);

		importExportButtonComposite = new Composite(content, SWT.NONE);

		layoutExpandHorizontal.copy().numColumns(2).applyTo(importExportButtonComposite);

		gridDataExpandHorizontal.applyTo(importExportButtonComposite);

		profileImportLink = new Link (importExportButtonComposite, SWT.NONE);

		profileImportLink.setText(Messages.getString("ButtonTabPage.importHref")); //$NON-NLS-1$

		profileImportLink.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				importXML();

			}

		});

		profileExportLink = new Link (importExportButtonComposite, SWT.NONE);

		profileExportLink.setText(Messages.getString("ButtonTabPage.exportHref")); //$NON-NLS-1$

		profileExportLink.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				exportXML();

			}

		});

		gridDataButton.hint(maxWidth, profileNewButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).y).applyTo(profileNewButton);

		gridDataButton.hint(maxWidth, profileRemoveButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).y).applyTo(profileRemoveButton);

		gridDataButton.hint(maxWidth, profileEditButton.computeSize(SWT.DEFAULT, SWT.DEFAULT).y).applyTo(profileEditButton);

		mappingGroup = new Group (content, SWT.NONE);

		layoutExpandBoth.applyTo(mappingGroup);

		gridDataExpandBoth.applyTo(mappingGroup);

		mappingGroup.setText(Messages.getString("ButtonTabPage.keyPressMapping")); //$NON-NLS-1$

		Composite compositeToLookBetter = new Composite(mappingGroup, SWT.NONE);

		layoutExpandHorizontal.applyTo(compositeToLookBetter);

		gridDataExpandHorizontal.applyTo(compositeToLookBetter);

		mappingTableViewer = new BupMapTableViewer(compositeToLookBetter, false);

		refreshCombo();

	}

	private void refreshTableToCombo() {

		IBupEventMapProfile profile = profiles.get(profileCombo.getSelectionIndex());

		if (profile != null) {

			profileRemoveButton.setEnabled(false);

			profileEditButton.setEnabled(false);

			ArrayList<IBupEventMapProfile> workspacePerfList = BupEventMapManager.getInstance().getProfilesFromWorkspacePref();

			for (IBupEventMapProfile workspacePref : workspacePerfList) {

				if (workspacePref.toString().equals(profile.toString())) {

					// enable edit only when selection is workspace pref

					profileRemoveButton.setEnabled(true);

					profileEditButton.setEnabled(true);

					break;

				}

			}

			IBupEventMap map = BupEventMapManager.getInstance().captureMap(profile);

			mappingTableViewer.loadMap(map);

			BupEventMapManager.getInstance().releaseMap(map);

		}

	}

	private void refreshCombo() {		

		profiles.clear();

		ArrayList<IBupEventMapProfile> globalPrefProfile = BupEventMapManager.getInstance().getProfilesFromWorkspacePref();

		profiles.addAll(globalPrefProfile);

		profiles.addAll(BupEventMapManager.getInstance().getProfilesFromBuiltin());

		if (globalPrefProfile.size() > 0)

			profileExportLink.setEnabled(true);

		else

			profileExportLink.setEnabled(false);

		String [] profileItems = new String [profiles.size()];

		for (int i = 0; i < profiles.size(); i++) {

			profileItems[i] = profiles.get(i).toString();

		}

		// try to remember and select the same upon combo reload, select first if

		// nothing was selected before or previous selection is removed

		String savedId = null;

		if (profileCombo.getSelectionIndex() > 0) {

			savedId = profileCombo.getItem(profileCombo.getSelectionIndex());

		} else {

			savedId = BupEventMapManager.getInstance().getDefaultProfile().toString();

		}

		profileCombo.setItems(profileItems);

		int selectionIndex = 0;

		if (savedId != null) {

			for (int i = 0; i < profileCombo.getItemCount(); i++) {

				if (profileCombo.getItem(i).equals(savedId)) {

					selectionIndex = i;

					break;

				}

			}

		}

		profileCombo.select(selectionIndex);

		refreshTableToCombo();

	}

	public void getStoredPreferenceValues() {

		IPreferenceStore store = ButtonPlugin.getBupPrefsStore();

		String profileID = store.getString(BupPreferenceConstants.KEY_MAP_PROFILE_STRING);

		if (profileID == null || profileID.equals("")) { //$NON-NLS-1$

			profileID = BupEventMapManager.getInstance().getDefaultProfile().toString();

		}

		int selectionIndex = 0;

		if (profileID != null) {

			for (int i = 0; i < profileCombo.getItemCount(); i++) {

				if (profileCombo.getItem(i).equals(profileID)) {

					selectionIndex = i;

				}

			}

		}

		profileCombo.select(selectionIndex);

		refreshTableToCombo();

	}

	/**

	 * Set the stored preference settings values of this tab page.

	 */

	public boolean setStoredPreferenceValues(){

		String profileString = profileCombo.getItem(profileCombo.getSelectionIndex());

		IPreferenceStore store = ButtonPlugin.getBupPrefsStore();

		store.setValue(BupPreferenceConstants.KEY_MAP_PROFILE_STRING, profileString);

		return true;

	}

}