/*

* Copyright (c) 2008 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.crashanalyser.ui.editors;

import org.eclipse.core.resources.IResourceChangeEvent;

import org.eclipse.core.resources.IResourceChangeListener;

import org.eclipse.core.resources.ResourcesPlugin;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.swt.SWT;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.ui.*;

import org.eclipse.ui.ide.FileStoreEditorInput;

import org.eclipse.ui.part.MultiPageEditorPart;

import com.nokia.s60tools.crashanalyser.data.ErrorLibrary;

import com.nokia.s60tools.crashanalyser.files.*;

import com.nokia.s60tools.crashanalyser.interfaces.*;

import com.nokia.s60tools.crashanalyser.resources.ImageKeys;

import com.nokia.s60tools.crashanalyser.resources.ImageResourceManager;

import com.nokia.s60tools.crashanalyser.model.*;

import java.io.*;

/**

 * A Crash Visualiser editor. Editor contains four tab pages:

 * Crash Data, Advanced, Errors & Warnings and XML.

 * 

 * Crash Data page contains summary data of the crash and crash reason

 * and description. Crash Data page also contain stack data if available.

 * 

 * Advanced page contains more advanced details about the crash, such as 

 * registers values, code segments, event log and cpsr details.

 * 

 * Errors & Warnings page contains all error and warning messages which 

 * may have occurred during the xml file creation.

 * 

 * XML tab page contains the raw xml data as an xml tree.

 *

 */

public class MultiPageEditor extends MultiPageEditorPart implements IResourceChangeListener, 

																	IErrorLibraryObserver {

	// editor pages

	private SummaryPage summaryPage;

	private AdvancedPage advancedPage;

	private ErrorPage errorPage;

	private XmlPage xmlPage;

	// editor data consists of either crashFile or summaryFile

	private CrashFile crashFile = null;

	private SummaryFile summaryFile = null;

	private ErrorLibrary errorLibrary = null;

	private String crashFilePath = "";

	static final int ERROR_PAGE_INDEX = 2;

	public MultiPageEditor() {

		super();

		ResourcesPlugin.getWorkspace().addResourceChangeListener(this);

	}

	/**

	 * Creates Crash Data page

	 */

	void createSummaryPage() {

		summaryPage = new SummaryPage();

		// output.crashxml is opened via CrashAnalyser View

		if (crashFile != null) {

			int index = 

				addPage(summaryPage.createPage(new Composite(getContainer(), SWT.NONE), crashFile));

			setPageText(index, "Crash Data");

		// Summary xml is opened via CrashAnalyser View

		} else if (summaryFile != null) {

			int index = 

				addPage(summaryPage.createPage(new Composite(getContainer(), SWT.NONE), summaryFile));

			setPageText(index, "Crash Summary");

		// output.crashxml file opened from File > Open

		} else {

			int index = 

				addPage(summaryPage.createPage(new Composite(getContainer(), SWT.NONE)));

			setPageText(index, "Crash Data");

		}

	}

	/**

	 * Creates advanced page

	 */

	void createAdvancedPage() {

		advancedPage = new AdvancedPage();

		// output.crashxml is opened via CrashAnalyser View

		if (crashFile != null) {

			int index = addPage(advancedPage.createPage(new Composite(getContainer(), SWT.NONE), crashFile));

			setPageText(index, "Advanced");

		// Summary xml is opened via CrashAnalyser View			

		} else if (summaryFile != null) {

			int index = addPage(advancedPage.createPage(new Composite(getContainer(), SWT.NONE), summaryFile));

			setPageText(index, "Advanced");

		// output.crashxml file opened from File > Open			

		} else {

			int index = addPage(advancedPage.createPage(new Composite(getContainer(), SWT.NONE)));

			setPageText(index, "Advanced");

		}

	}

	/**

	 * Creates Errors & Warnings page

	 */

	void createErrorPage() {

		errorPage = new ErrorPage();

		// output.crashxml is opened via CrashAnalyser View

		if (crashFile != null) {

			if (crashFile.containsErrorsOrWarnings()) {

				int index = addPage(errorPage.createPage(new Composite(getContainer(), SWT.NONE), crashFile));

				setPageText(index, "Errors && Warnings");

			}

		// Summary xml is opened via CrashAnalyser View			

		} else if (summaryFile != null) {

			if (summaryFile.containsErrorsOrWarnings()) {

				int index = addPage(errorPage.createPage(new Composite(getContainer(), SWT.NONE), summaryFile));

				setPageText(index, "Errors && Warnings");

			}

		// output.crashxml file opened from File > Open			

		} else {

			int index = addPage(errorPage.createPage(new Composite(getContainer(), SWT.NONE)));

			setPageText(index, "Errors && Warnings");

		}

	}

	/**

	 * Creates XML page

	 */

	void createXmlPage() {

		xmlPage = new XmlPage();

		// output.crashxml is opened via CrashAnalyser View

		if (crashFile != null) {

			int index = addPage(xmlPage.createPage(new Composite(getContainer(), SWT.NONE), crashFile));

			setPageText(index, "XML");

		// Summary xml is opened via CrashAnalyser View			

		} else if (summaryFile != null) {

			int index = addPage(xmlPage.createPage(new Composite(getContainer(), SWT.NONE), summaryFile));

			setPageText(index, "XML");

		// output.crashxml file opened from File > Open			

		} else {

			int index = addPage(xmlPage.createPage(new Composite(getContainer(), SWT.NONE), crashFile));

			setPageText(index, "XML");

		}

	}

	/**

	 * Creates the pages of the multi-page editor.

	 */

	protected void createPages() {

		createSummaryPage();

		createAdvancedPage();

		createErrorPage();

		createXmlPage();

		// output.crashxml file was opened via File > Open

		// we need to read error library and CrashFile

		if (crashFilePath != null && !"".equals(crashFilePath)) {

			errorLibrary = ErrorLibrary.getInstance(this);

		} else {

			updatePages();

		}

	}

	public void errorLibraryReady() {

		Runnable refreshRunnable = new Runnable(){

			public void run(){

				crashFile = CrashFile.read(new File(crashFilePath), errorLibrary);

				summaryPage.setFile(crashFile);

				advancedPage.setFile(crashFile);

				if (crashFile.containsErrorsOrWarnings()) {

					errorPage.setFile(crashFile);

				} else {

					removePage(ERROR_PAGE_INDEX);

				}

				xmlPage.setFile(crashFile);

			}

		};

		Display.getDefault().asyncExec(refreshRunnable);        		

	}

	public void updatePages() {

		Runnable refreshRunnable = new Runnable(){

			public void run(){

				summaryPage.update();

			}

		};

		Display.getDefault().asyncExec(refreshRunnable);        		

	}

	/**

	 * The <code>MultiPageEditorPart</code> implementation of this 

	 * <code>IWorkbenchPart</code> method disposes all nested editors.

	 * Subclasses may extend.

	 */

	public void dispose() {

		ResourcesPlugin.getWorkspace().removeResourceChangeListener(this);

		super.dispose();

	}

	/**

	 * Saves the multi-page editor's document.

	 */

	public void doSave(IProgressMonitor monitor) {

		// not supported

	}

	/**

	 * editor's data can be saved as xml, html or txt.

	 */

	public void doSaveAs() {

		String[] filter = null;

		// we have a fully decoded file

		if (crashFile != null) {

			filter = new String[] { "*.crashxml", 

					   				"*.html",

					   				"*.txt"};

		// we have a summary file

		} else {

			filter = new String[] { "*.xml", 

					   				"*.html",

									"*.txt"};	

		}		

		String result = FileOperations.saveAsDialog("Crash Analyser - Save Crash File As", filter, getEditorSite().getShell());

		if (result != null && result.length() > 0) {

			// crash file exists and user did not select the current crash file

			if (crashFile != null && !result.equalsIgnoreCase(crashFile.getFilePath()))

				crashFile.writeTo(new File(result));

			// summary file exists and user did not select the current summary file

			else if (summaryFile != null && !result.equalsIgnoreCase(summaryFile.getFilePath()))

				summaryFile.writeTo(new File(result));

		}

	}

	public void init(IEditorSite site, IEditorInput editorInput)

		throws PartInitException {

		String fileName = "Crash Analyser";

		// We don't support files, must be CrashFile or SummaryFile object

		if (editorInput instanceof IFileEditorInput) {

			throw new PartInitException("Not Valid Crash Analyser File.");

		// CrashFile or SummaryFile

		} else {

			// output.crashxml file opened from Crash Analyser Main View

			if (editorInput instanceof CrashFile) {

				crashFile = (CrashFile)editorInput;

				fileName = crashFile.getFileName();

				super.setTitleImage(ImageResourceManager.getImage(ImageKeys.DECODED_FILE));

			// Summary xml file opened from Crash Analyser Main View

			} else if (editorInput instanceof SummaryFile) {

				summaryFile = (SummaryFile)editorInput;

				fileName = summaryFile.getFileName();

				super.setTitleImage(ImageResourceManager.getImage(ImageKeys.PARTIALLY_DECODED_FILE));

			// output.crashxml file opened from Carbide File menu

			} else {

				crashFilePath = ((FileStoreEditorInput)editorInput).getURI().getPath();

				fileName = editorInput.getName();

				super.setTitleImage(ImageResourceManager.getImage(ImageKeys.DECODED_FILE));

			}

		}

		super.init(site, editorInput);

		super.setPartName(fileName);

	}

	public boolean isSaveAsAllowed() {

		return true;

	}

	public void resourceChanged(final IResourceChangeEvent event){

		// nothing to be done

	}

}