/*

 * 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.util.ArrayList;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.dialogs.MessageDialog;

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.graphics.Point;

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.Event;

import org.eclipse.swt.widgets.FileDialog;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableItem;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.PlatformUI;

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

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

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

import com.nokia.carbide.cpp.sdk.core.ISymbianSDK;

public class NewPIWizardPageRomSubTask extends NewPIWizardPage implements INewPIWizardSettings

{

	private boolean visableBefore = false;

	protected NewPIWizardPageRomSubTask() {

		super(""); //$NON-NLS-1$

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

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

	}

	// use base SDK chooser object for layout

	private SdkChooserBase sdkCommon = new SdkChooserBase();

	private static final String FILTER_EXT_KEY = "extension"; //$NON-NLS-1$

	private static final String FILTER_NAME_KEY = "name"; //$NON-NLS-1$

	private static final String MY_WIGET_KEY = "myWiget"; //$NON-NLS-1$

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

	private static final int TEXT_MARGIN = 2;

	private static final int ARC_WIDTH = 2;

	private static String lastGoodDir = null;

	private ModifyListener textModifyListener = new ModifyListener () {

		public void modifyText(ModifyEvent arg0) {

			Object source = arg0.getSource();

			if (source instanceof Text) {

				String pathString = ((Text)source).getText();

				java.io.File file = new java.io.File(pathString);

				if (file.exists()) {

					if (file.isFile()) {

						lastGoodDir = file.getParent();

					} else if (file.isDirectory()){

						lastGoodDir = pathString;

					} else {

						lastGoodDir = null;

					}

				}

			}

			if (source == symbolText) {

				NewPIWizardSettings.getInstance().romSymbolFile = symbolText.getText();

			}

			if (source == obyText) {

				NewPIWizardSettings.getInstance().romObyFile = obyText.getText();

			}

			validatePage();

		}

	};

	private SelectionListener browseSelectionListener = new SelectionListener() {

		public void widgetDefaultSelected(SelectionEvent arg0) {

		}

		public void widgetSelected(SelectionEvent arg0) {

			Button button = (Button) arg0.getSource();

			String selectedFilePath;

			FileDialog dialog = new FileDialog(getShell());

			ArrayList<String> pkgExtensions = new ArrayList<String>();

			ArrayList<String> pkgNames = new ArrayList<String>();

			pkgExtensions.add((String)button.getData(FILTER_EXT_KEY));

			pkgNames.add((String)button.getData(FILTER_NAME_KEY));

			pkgExtensions.add("*.*"); //$NON-NLS-1$"

			pkgNames.add(Messages.getString("NewPIWizardPageRomSubTask.name.filter")); //$NON-NLS-1$

			dialog.setFilterExtensions(pkgExtensions.toArray(new String[pkgExtensions.size()]));

			dialog.setFilterNames(pkgNames.toArray(new String[pkgNames.size()]));

			ISymbianSDK sdk = sdkCommon.getSelectedSdk();

			if (sdk != null) {

				String epocroot = sdk.getEPOCROOT();

				if (lastGoodDir != null) {

					// pick last known good before EPOCROOT

					dialog.setFilterPath(lastGoodDir);

				} else if (epocroot != null) {

					if (epocroot != "") { //$NON-NLS-1$

						String romDir = epocroot;

						if (romDir.endsWith(File.separator))

							romDir += "epoc32" + File.separator + "rom";	//$NON-NLS-1$" //$NON-NLS-2$"

						else

							romDir += File.separator + "epoc32" + File.separator + "rom";	//$NON-NLS-1$" //$NON-NLS-2$"

						// S60 and Techview symbol locations

						dialog.setFilterPath(romDir);

					}

				}

			}

			selectedFilePath = dialog.open();

			if (selectedFilePath != null) {

				((Text)button.getData(MY_WIGET_KEY)).setText(selectedFilePath);

			}

		}

	};

	//	 controls

	private Composite composite = null;

//	private Label headerLabel = null;

	private Label symbolLabel = null;

	private Composite symbolComposite = null;

	private Text symbolText = null;

	private Button symbolButton = null;

	private Label obyLabel = null;

	private Composite obyComposite = null;

	private Text obyText = null;

	private Button obyButton = null;

	private Label rofsObySymbolLabel = null;

	private Composite rofsObySymbolComposite = null;

	private Table rofsObySymbolTable = null;

	private Composite rofsObySymbolButtonComposite = null;

	private Button rofsAddButton = null;

	private Button rofsRemoveButton = null;

//	private Label detailLabel = null;

	public void validatePage() {

		if (symbolText.getText().length() > 1 ||

				obyText.getText().length() > 1 ||

				rofsObySymbolTable.getItemCount() > 1) {

				if (sdkCommon.getSelectedSdk() == null) {

					setErrorMessage(Messages.getString("NewPIWizardPageRomSubTask.error.1")); //$NON-NLS-1$

					setPageComplete(false);

					return;

				}

		}

		if (symbolText.getText().length() > 0 ) {

			java.io.File symFile = new java.io.File(symbolText.getText());

			if (!symFile.exists() || !symFile.isFile()) {

				setErrorMessage(Dialog.shortenText(Messages.getString("NewPIWizardPageRomSubTask.symbol.label") +  " " + symbolText.getText() + " " + Messages.getString("NewPIWizardPageRomSubTask.error.2"), symbolComposite)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$

				setPageComplete(false);

				return;

			}

		}

		if (obyText.getText().length() > 0 ) {

			java.io.File obyFile = new java.io.File(obyText.getText());

			if (!obyFile.exists() || !obyFile.isFile()) {

				setErrorMessage(Dialog.shortenText(Messages.getString("NewPIWizardPageRomSubTask.oby.label") +  " " + obyText.getText() + " " + Messages.getString("NewPIWizardPageRomSubTask.error.2"), obyComposite)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$

				setPageComplete(false);

				return;

			}

		}

		setErrorMessage(null);

		setPageComplete(true);

		return;

	}

	private void writeRofsTableToStatus() {

		NewPIWizardSettings npws = NewPIWizardSettings.getInstance();

		npws.rofsObySymbolPairList.clear();

		TableItem[] items = rofsObySymbolTable.getItems();

		for (TableItem item : items) {

			RofsObySymbolPair pair = (RofsObySymbolPair) item.getData(ROFS_ITEM_PAIR_KEY);

			if (pair.haveObyFile() || pair.haveSymbolFile()) {

				npws.rofsObySymbolPairList.add(pair);

			}

		}

	}

	public void createControl(Composite parent) {

		super.createControl(parent);

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;

		composite = new Composite(parent, SWT.NONE);

		composite.setLayout(gridLayout);

		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

//		headerLabel = new Label(composite, SWT.NONE);

//		headerLabel.setText(Messages.getString("NewPIWizardPageRomSubTask.header.label")); //$NON-NLS-1$

		// the SDK top half of the page

		sdkCommon.layout(composite);

		sdkCommon.sdkTable.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				// write back our status

				NewPIWizardSettings.getInstance().romSdk = sdkCommon.getSelectedSdk();

				validatePage();

			}

		});

//		detailLabel = new Label(composite, SWT.NONE);

//		detailLabel.setText(Messages.getString("NewPIWizardPageRomSubTask.detail.label")); //$NON-NLS-1$

		obyLabel = new Label(composite, SWT.NONE);

		obyLabel.setText(Messages.getString("NewPIWizardPageRomSubTask.oby.label")); //$NON-NLS-1$

		createObyControl();

		symbolLabel = new Label(composite, SWT.NONE);

		symbolLabel.setText(Messages.getString("NewPIWizardPageRomSubTask.symbol.label")); //$NON-NLS-1$

		createSymbolControl();

		rofsObySymbolLabel = new Label(composite, SWT.NONE);

		rofsObySymbolLabel.setText(Messages.getString("NewPIWizardPageRomSubTask.rofs.pairs")); //$NON-NLS-1$

		createRofsObySymbolControl();

		validatePage();

		// top tap get focus

		sdkCommon.sdkTable.setFocus();

		setControl(composite);

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

	}

	public void createSymbolControl() {

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 2;

		symbolComposite = new Composite(composite, SWT.NONE);

		symbolComposite.setLayout(gridLayout);

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

		symbolText = new Text(symbolComposite, SWT.BORDER | SWT.SINGLE);

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

		symbolText.addModifyListener(textModifyListener);

		symbolButton = new Button(symbolComposite, SWT.NONE);

		symbolButton.setText(Messages.getString("NewPIWizardPageRomSubTask.symbol.button")); //$NON-NLS-1$

		symbolButton.setData(FILTER_EXT_KEY, Messages.getString("NewPIWizardPageRomSubTask.symbol.filter")); //$NON-NLS-1$

		symbolButton.setData(FILTER_NAME_KEY, Messages.getString("NewPIWizardPageRomSubTask.symbol.filter.text")); //$NON-NLS-1$

		symbolButton.setData(MY_WIGET_KEY, symbolText);

		symbolButton.addSelectionListener(browseSelectionListener);

	}

	public void createObyControl() {

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 2;

		obyComposite = new Composite(composite, SWT.NONE);

		obyComposite.setLayout(gridLayout);

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

		obyText = new Text(obyComposite, SWT.BORDER | SWT.SINGLE);

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

		obyText.addModifyListener(textModifyListener);

		obyButton = new Button(obyComposite, SWT.NONE);

		obyButton.setText(Messages.getString("NewPIWizardPageRomSubTask.oby.button")); //$NON-NLS-1$

		obyButton.setData(FILTER_EXT_KEY, Messages.getString("NewPIWizardPageRomSubTask.oby.filter")); //$NON-NLS-1$

		obyButton.setData(FILTER_NAME_KEY, Messages.getString("NewPIWizardPageRomSubTask.oby.filter.text")); //$NON-NLS-1$

		obyButton.setData(MY_WIGET_KEY, obyText);

		obyButton.addSelectionListener(browseSelectionListener);

	}

	public void createRofsObySymbolControl() {

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 2;

		rofsObySymbolComposite = new Composite(composite, SWT.NONE);

		rofsObySymbolComposite.setLayout(gridLayout);

		rofsObySymbolComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		rofsObySymbolTable = new Table(rofsObySymbolComposite, SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL | SWT.MULTI );

		rofsObySymbolTable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		GridLayout buttonGridLayout = new GridLayout();

		buttonGridLayout.numColumns = 1;

		// custom widget for multiple line

		rofsObySymbolTable.addListener(SWT.MeasureItem, new Listener() {

			public void handleEvent(Event event) {

				TableItem item = (TableItem)event.item;

				String text = item.getText(event.index);

				Point size = event.gc.textExtent(text);

				event.width = Math.max(event.width, size.x + 2 * TEXT_MARGIN);

				event.height = Math.max(event.height, size.y + 2 * TEXT_MARGIN);

			}});

		rofsObySymbolTable.addListener(SWT.EraseItem, new Listener() {

			public void handleEvent(Event event) {

				event.detail &= ~SWT.FOREGROUND;

			}

		});

		rofsObySymbolTable.addListener(SWT.PaintItem, new Listener() {

			public void handleEvent(Event event) {

				TableItem item = (TableItem)event.item;

				String text = item.getText(event.index);

				event.gc.drawText(text, event.x, event.y, true);

				event.gc.drawLine(event.x , event.y + event.height - TEXT_MARGIN, event.x + rofsObySymbolTable.getSize().x , event.y + event.height - TEXT_MARGIN);

			}});

		rofsObySymbolTable.pack();

		rofsObySymbolButtonComposite = new Composite(rofsObySymbolComposite, SWT.NONE);

		rofsObySymbolButtonComposite.setLayout(buttonGridLayout);

		rofsObySymbolButtonComposite.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false));

		rofsAddButton = new Button(rofsObySymbolButtonComposite, SWT.NONE);

		rofsAddButton.setText(Messages.getString("NewPIWizardPageRomSubTask.add")); //$NON-NLS-1$

		rofsAddButton.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				NewPIWizardObySymbolPairDialog dialog = new NewPIWizardObySymbolPairDialog(getShell());

				dialog.open();

				RofsObySymbolPair pair = dialog.getPair();

				if (pair.haveObyFile() || pair.haveSymbolFile() ) {

					boolean found = false;

					TableItem[] items = rofsObySymbolTable.getItems();

					for (TableItem item : items) {

						if (((RofsObySymbolPair)item.getData(ROFS_ITEM_PAIR_KEY)).equals(pair)) {

							found = true;

							break;

						}

					}

					// don't add new entry if it's already there

					if (found == false) {

						TableItem newItem = new TableItem(rofsObySymbolTable, SWT.NONE);

						newItem.setData(ROFS_ITEM_PAIR_KEY, pair);

						newItem.setText(pair.getDisplayString());	

					} else {

						MessageDialog.openInformation(getShell(), Messages.getString("NewPIWizardPageRomSubTask.add.rofs.pair"), Messages.getString("NewPIWizardPageRomSubTask.entry.already.exisits")); //$NON-NLS-1$ //$NON-NLS-2$

					}

				}

				writeRofsTableToStatus();

			}

		});

		rofsRemoveButton = new Button(rofsObySymbolButtonComposite, SWT.NONE);

		rofsRemoveButton.setText(Messages.getString("NewPIWizardPageRomSubTask.remove")); //$NON-NLS-1$

		rofsRemoveButton.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				rofsObySymbolTable.remove(rofsObySymbolTable.getSelectionIndices());

				writeRofsTableToStatus();

			}

		});

		GridData buttonWidthGridData = new GridData();

		buttonWidthGridData.widthHint = Math.max(rofsAddButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x, rofsRemoveButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);

		rofsAddButton.setLayoutData(buttonWidthGridData);

		rofsRemoveButton.setLayoutData(buttonWidthGridData);

	}

	public void setupPageFromFromNewPIWizardSettings() {

		NewPIWizardSettings npws = NewPIWizardSettings.getInstance();

		sdkCommon.setSelectedSdk(npws.romSdk);

		symbolText.setText(npws.romSymbolFile);

		obyText.setText(npws.romObyFile);

		rofsObySymbolTable.removeAll();

		for(RofsObySymbolPair pair:npws.rofsObySymbolPairList) {

			TableItem newItem = new TableItem(rofsObySymbolTable, SWT.NONE);

			newItem.setData(ROFS_ITEM_PAIR_KEY, pair);

			newItem.setText(pair.getDisplayString());

		}

	}

	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) {

				String errorMessage = getErrorMessage();

				if (errorMessage != null) {

					if (errorMessage.startsWith(Messages.getString("NewPIWizardPageRomSubTask.symbol.label"))) { //$NON-NLS-1$

						symbolText.selectAll();

						symbolText.setFocus();

					} else if (errorMessage.startsWith(Messages.getString("NewPIWizardPageRomSubTask.oby.label"))) { //$NON-NLS-1$

						obyText.selectAll();

						symbolText.setFocus();

					}

				}

			}

			lastGoodDir = null;

		}

		visableBefore = visable;

	}

}