// Copyright (c) 2008-2009 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.symbian.smt.gui;

import java.util.ArrayList;

import java.util.HashMap;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorPart;

import org.eclipse.ui.IFileEditorInput;

import org.eclipse.ui.IPartListener;

import org.eclipse.ui.IPropertyListener;

import org.eclipse.ui.IWorkbenchPart;

import org.eclipse.ui.PlatformUI;

import com.symbian.smt.gui.nature.Nature;

final class SmmPartListener implements IPartListener {

	private final class PropertyChangeListener implements IPropertyListener {

		public void propertyChanged(Object source, int propId) {

			if (propId == IEditorPart.PROP_DIRTY) {

				if (source instanceof IEditorPart) {

					IEditorPart editorPart = (IEditorPart) source;

					IEditorInput input = editorPart.getEditorInput();

					if (input instanceof IFileEditorInput) {

						boolean isEditorDirty = editorPart.isDirty();

						String dirty = String.valueOf(isEditorDirty);

						IFile file = ((IFileEditorInput) input).getFile();

						// If user has saved and if it is a resource file or a

						// sys def file,

						// need to validate the file and mark it in error

						// if it is invalid.

						if (!isEditorDirty) {

							// save but do not build if validation fails.

							if (ManageResources.isResourceFile(file)) {

								// TODO:BRS:Remove the if test below when

								// Shapes.xsd is available.

								if (!file.getParent().getName()

										.equals("Shapes")) {

									FileValidationHelper

											.validateResourceFile(file);

								}

							} else if (ManageResources

									.isSystemDefinitionFile(file)) {

								FileValidationHelper.validateSysDefFile(file);

							}

						}

						if (!items.containsKey(file.getProject().getName())) {

							String entry[] = { file.getName(), dirty };

							ArrayList<String[]> entries = new ArrayList<String[]>();

							entries.add(entry);

							items.put(file.getProject().getName(), entries);

						} else {

							ArrayList<String[]> projectFiles = items.get(file

									.getProject().getName());

							Boolean alreadyExists = false;

							for (String[] anEntry : projectFiles) {

								if (anEntry[0].equalsIgnoreCase(file.getName())) {

									anEntry[1] = dirty;

									alreadyExists = true;

								}

							}

							if (!alreadyExists) {

								String entry[] = { file.getName(), dirty };

								items.get(file.getProject().getName()).add(

										entry);

							}

						}

					}

				}

				// Tell it to do any decorating

				PlatformUI.getWorkbench().getDecoratorManager().update(

						"com.symbian.smt.gui.outofsyncdecorator");

			}

		}

	}

	private PropertyChangeListener listener;

	private static HashMap<String, ArrayList<String[]>> items = new HashMap<String, ArrayList<String[]>>();

	public SmmPartListener() {

		listener = new PropertyChangeListener();

	}

	private void addListener(IWorkbenchPart part) {

		if (part instanceof IEditorPart) {

			try {

				IEditorInput input = ((IEditorPart) part).getEditorInput();

				if (input instanceof IFileEditorInput) {

					IFile file = ((IFileEditorInput) input).getFile();

					if (file.getProject().isOpen()) {

						boolean ourProject = file.getProject().hasNature(

								Nature.ID);

						if (ourProject && !file.isDerived()) {

							part.addPropertyListener(listener);

						}

					}

				}

			} catch (CoreException e) {

				Logger.log(e.getMessage(), e);

			}

		}

	}

	public boolean isInSync(String project) {

		// Get the files for this project

		ArrayList<String[]> projectFiles = items.get(project);

		// Iterate over the resources

		if (projectFiles != null) {

			for (String[] anEntry : projectFiles) {

				if (Boolean.valueOf(anEntry[1])) {

					// A file is out of sync, so the project it dirty

					return false;

				}

			}

		}

		// No sync information exists for the project or all are in sync -

		// return true

		return true;

	}

	public void partActivated(IWorkbenchPart part) {

		addListener(part);

		// if (part instanceof IViewPart) {

		// String partId = ((IViewPart) part).getViewSite().getId();

		//

		// if (partId.equals("org.eclipse.ui.navigator.ProjectExplorer")) {

		// FileValidationHelper.showProblemsViewIfNeeded();

		// }

		// }

	}

	public void partBroughtToTop(IWorkbenchPart part) {

		addListener(part);

	}

	public void partClosed(IWorkbenchPart part) {

		part.removePropertyListener(listener);

		if (part instanceof IEditorPart) {

			IEditorInput input = ((IEditorPart) part).getEditorInput();

			if (input instanceof IFileEditorInput) {

				IFile file = ((IFileEditorInput) input).getFile();

				if (items.containsKey(file.getProject().getName())) {

					ArrayList<String[]> projectFiles = items.get(file

							.getProject().getName());

					for (String[] anEntry : projectFiles) {

						if (anEntry[0].equalsIgnoreCase(file.getName())) {

							projectFiles.remove(anEntry);

							break;

						}

					}

				}

			}

			PlatformUI.getWorkbench().getDecoratorManager().update(

					"com.symbian.smt.gui.outofsyncdecorator");

		}

	}

	public void partDeactivated(IWorkbenchPart part) {

	}

	public void partOpened(IWorkbenchPart part) {

		addListener(part);

	}

}