org.eclipse.mylyn.git.ui/src/org/eclipse/mylyn/internal/git/ui/GetChangeSetDialog.java - gerrit/mylyn/org.eclipse.mylyn.versions - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011 Ericsson Research Canada and others
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *   Ericsson - Initial API and implementation
  ******************************************************************************/

 package org.eclipse.mylyn.internal.git.ui;

 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IStorage;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.mylyn.commons.core.StatusHandler;
 import org.eclipse.mylyn.internal.git.ui.connector.GitConnectorUi;
 import org.eclipse.mylyn.versions.core.Change;
 import org.eclipse.mylyn.versions.core.ChangeSet;
 import org.eclipse.mylyn.versions.core.ChangeType;
 import org.eclipse.mylyn.versions.core.ScmCore;
 import org.eclipse.mylyn.versions.core.ScmRepository;
 import org.eclipse.mylyn.versions.core.spi.ScmConnector;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.CCombo;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.team.core.history.IFileRevision;
 import org.eclipse.team.core.history.provider.FileRevision;
 import org.eclipse.ui.forms.FormDialog;
 import org.eclipse.ui.forms.IManagedForm;
 import org.eclipse.ui.forms.events.ExpansionAdapter;
 import org.eclipse.ui.forms.events.ExpansionEvent;
 import org.eclipse.ui.forms.widgets.ExpandableComposite;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.forms.widgets.ScrolledForm;
 import org.eclipse.ui.forms.widgets.Section;

 /**
  * This class implements the dialog used to fill-in the Find review items details This is a modeless-like dialog.
  *
  * @author Sebastien Dubois
  */
 public class GetChangeSetDialog extends FormDialog {

 	/**
 	 * Field FIND_REVIEW_ITEMS_DIALOG_TITLE. (value is ""Find Review Items"")
 	 */
 	private static final String FIND_REVIEW_ITEMS_DIALOG_TITLE = "Find Review Items";

 	/**
 	 * Field FIND_REVIEW_ITEMS_DIALOG_VALUE. (value is ""Review Item Info"")
 	 */
 	private static final String FIND_REVIEW_ITEMS_DIALOG_VALUE = "Review Item Info";

 	/**
 	 * Field FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE. (value is ""Review Item Components"")
 	 */
 	private static final String FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE = "Review Item Components";

 	/**
 	 * Field COMMIT_INFO_HEADER_MSG. (value is ""Commit Information"")
 	 */
 	private static final String COMMIT_INFO_HEADER_MSG = "Commit Information";

 	/**
 	 * Field COMMIT_COMPONENTS_HEADER_MSG. (value is ""Committed Components"")
 	 */
 	private static final String COMMIT_COMPONENTS_HEADER_MSG = "Committed Components";

 	/**
 	 * Field DIALOG_COMBO_MAX_CHARACTERS. (value is 80)
 	 */
 	private static final int DIALOG_COMBO_MAX_CHARACTERS = 80;

 	/**
 	 * Field GIT_NEWLINE. (value is "\n")
 	 */
 	private static final String GIT_NEWLINE = "\n";

 	/**
 	 * Field NUM_COMMIT_SHOWN. (value is 10)
 	 */
 	private static final int NUM_COMMIT_SHOWN = 10;

 	/**
 	 * Field MORE_ITEMS_LABEL. (value is ""<more items>"")
 	 */
 	private static final String MORE_ITEMS_LABEL = "<more items>";

 	/**
 	 * Field inputProject - Input project
 	 */
 	protected final IProject inputProject;

 	/**
 	 * Field commitList
 	 */
 	private CCombo commitList = null;

 	/**
 	 * Field selectedChangeSet.
 	 */
 	protected ChangeSet selectedChangeSet = null;

 	/**
 	 * Field messageText.
 	 */
 	Label messageText = null;

 	/**
 	 * Field idText.
 	 */
 	Label idText = null;

 	/**
 	 * Field authorNameText.
 	 */
 	Label authorNameText = null;

 	/**
 	 * Field authorEmailText.
 	 */
 	Label authorEmailText = null;

 	/**
 	 * Field dateText.
 	 */
 	Label dateText = null;

 	/**
 	 * Field repositoryNameText.
 	 */
 	Label repositoryNameText = null;

 	/**
 	 * Field changeList.
 	 */
 	org.eclipse.swt.widgets.List changeList = null;

 	/**
 	 * Field dateFormat.
 	 */
 	final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MMM-dd hh:mm:ss");

 	/**
 	 * Field connector
 	 */
 	private ScmConnector connector = null;

 	/**
 	 * Field repository
 	 */
 	private ScmRepository repository = null;

 	/**
 	 * Field changeSets - The ChangeSets fetched from the repository
 	 */
 	private List<ChangeSet> changeSets = null;

 	/**
 	 * Field filteredChangeSets - The ChangeSets that will be displayed
 	 */
 	private final List<ChangeSet> filteredChangeSets = new ArrayList<ChangeSet>();

 	/**
 	 * Field currentChangeSetIndex - The current index in the fetched ChangeSet List
 	 */
 	private int currentChangeSetIndex;

 	/**
 	 * Field currentCommitListIndex - The current index in the filtered ChangeSet List
 	 */
 	private int currentCommitListIndex;

 	/**
 	 * Constructor for R4EReviewGroupInputDialog.
 	 *
 	 * @param aParentShell
 	 *            Shell
 	 * @param aInputProject
 	 *            IProject
 	 */
 	public GetChangeSetDialog(Shell aParentShell, IProject aInputProject) {
 		super(aParentShell);
 		setBlockOnOpen(true);
 		inputProject = aInputProject;
 	}

 	/**
 	 * @param shell
 	 *            Shell
 	 * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
 	 */
 	@Override
 	protected void configureShell(Shell aShell) {
 		super.configureShell(aShell);
 		aShell.setText(FIND_REVIEW_ITEMS_DIALOG_TITLE);
 	}

 	/**
 	 * Configures the dialog form and creates form content. Clients should override this method.
 	 *
 	 * @param mform
 	 *            - the dialog form
 	 */
 	@Override
 	protected void createFormContent(final IManagedForm mform) {

 		try {
 			connector = ScmCore.getConnector(inputProject);
 			repository = connector.getRepository(inputProject, new NullProgressMonitor());
 			changeSets = connector.getChangeSets(repository, new NullProgressMonitor());
 			currentChangeSetIndex = 0;
 			currentCommitListIndex = 0;

 			final FormToolkit toolkit = mform.getToolkit();
 			final ScrolledForm sform = mform.getForm();
 			sform.setExpandVertical(true);

 			// Main dialog composite
 			final Composite composite = sform.getBody();
 			composite.setLayout(new GridLayout(4, false));

 			// Add Commit List in drop-down menu
 			final Label label = toolkit.createLabel(composite, "Available Commits: ");
 			label.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 			commitList = new CCombo(composite, SWT.WRAP | SWT.READ_ONLY);
 			populateNextChangeSets();

 			commitList.setTextLimit(DIALOG_COMBO_MAX_CHARACTERS);
 			commitList.setVisibleItemCount(NUM_COMMIT_SHOWN);
 			commitList.select(0);
 			if (filteredChangeSets.size() > 0) {
 				selectedChangeSet = filteredChangeSets.get(0);
 			}
 			final GridData textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 			textGridData.horizontalSpan = 3;
 			commitList.setLayoutData(textGridData);
 			commitList.addSelectionListener(new SelectionAdapter() {
 				@Override
 				public void widgetSelected(SelectionEvent e) {
 					int selectedIndex = commitList.getSelectionIndex();
 					if (commitList.getItem(selectedIndex).equals(MORE_ITEMS_LABEL)) {
 						populateNextChangeSets();
 						commitList.select(selectedIndex);
 					}

 					if (filteredChangeSets.size() > 0) {
 						selectedChangeSet = filteredChangeSets.get(selectedIndex);
 					}

 					refresh();
 				}
 			});

 			createReviewItemDetails(toolkit, sform);
 			createReviewItemComponents(toolkit, sform);

 		} catch (CoreException e) {
 			StatusHandler.log(new Status(IStatus.ERROR, GitConnectorUi.ID_PLUGIN, IStatus.OK, e.toString(), e));
 		}
 		return;
 	}

 	/**
 	 * Gets the information and populates the local data structure with the next round of commit informations
 	 */
 	protected void populateNextChangeSets() {
 		ChangeSet updatedChangeSet = null;
 		ChangeSet changeSet = null;
 		String repoProject = null;

 		// Remove extension item first if present
 		if (currentCommitListIndex > 0) {
 			commitList.remove(currentCommitListIndex);
 		}

 		while (currentChangeSetIndex < changeSets.size()) {
 			changeSet = changeSets.get(currentChangeSetIndex);
 			updatedChangeSet = updateChangeSet(changeSet);

 			// Only display commits that contains at least one file from the
 			// selected project
 			for (Change change : updatedChangeSet.getChanges()) {
 				if (change.getTarget() != null) {
 					repoProject = change.getTarget().getProjectName();
 				} else if (change.getBase() != null) {
 					repoProject = change.getBase().getProjectName();
 				}
 				if (repoProject != null && repoProject.equals(inputProject.getName())) {
 					String[] tokens = updatedChangeSet.getMessage().split(GIT_NEWLINE, 2);
 					commitList.add((tokens[0].length() > DIALOG_COMBO_MAX_CHARACTERS) ? tokens[0].substring(0,
 							DIALOG_COMBO_MAX_CHARACTERS - 3) + "..." : tokens[0]);
 					filteredChangeSets.add(updatedChangeSet);
 					currentCommitListIndex++;

 					// If we already have all the commits from the current batch
 					// exit
 					if (currentCommitListIndex % NUM_COMMIT_SHOWN == 0) {
 						commitList.add(MORE_ITEMS_LABEL);
 						currentChangeSetIndex++;
 						return;
 					}
 					break;
 				}
 			}
 			currentChangeSetIndex++;
 		}
 		return;
 	}

 	/**
 	 * Creates the Currently Selected Review Items Details Expandable Composite
 	 *
 	 * @param aToolkit
 	 *            FormToolkit
 	 * @param aParent
 	 *            Composite
 	 */
 	private void createReviewItemDetails(FormToolkit aToolkit, final ScrolledForm aParent) {

 		GridData textGridData = null;

 		// Basic parameters section
 		final Section basicSection = aToolkit.createSection(aParent.getBody(), Section.DESCRIPTION
 				| ExpandableComposite.TITLE_BAR | ExpandableComposite.TWISTIE | ExpandableComposite.EXPANDED);
 		final GridData basicSectionGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		basicSectionGridData.horizontalSpan = 4;
 		basicSection.setLayoutData(basicSectionGridData);
 		basicSection.setText(COMMIT_INFO_HEADER_MSG);
 		basicSection.setDescription(FIND_REVIEW_ITEMS_DIALOG_VALUE);
 		basicSection.addExpansionListener(new ExpansionAdapter() {
 			@Override
 			public void expansionStateChanged(ExpansionEvent e) {
 				aParent.reflow(true);
 				getShell().setSize(getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT));
 			}
 		});
 		final Composite basicSectionClient = aToolkit.createComposite(basicSection);
 		basicSectionClient.setLayout(new GridLayout(4, false));
 		basicSection.setClient(basicSectionClient);

 		// Message
 		final Label titleLabel = aToolkit.createLabel(basicSectionClient, "Title: ", SWT.WRAP);
 		titleLabel.setLayoutData(new GridData(GridData.FILL, GridData.FILL, false, false));
 		messageText = aToolkit.createLabel(basicSectionClient,
 				selectedChangeSet == null ? "" : selectedChangeSet.getMessage(), SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		messageText.setLayoutData(textGridData);

 		// Id
 		final Label idLabel = aToolkit.createLabel(basicSectionClient, "ID: ", SWT.WRAP);
 		idLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 		idText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null ? "" : selectedChangeSet.getId(),
 				SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		idText.setLayoutData(textGridData);

 		// Author Name
 		final Label authorNameLabel = aToolkit.createLabel(basicSectionClient, "Author Name: ", SWT.WRAP);
 		authorNameLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 		authorNameText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
 				? ""
 				: selectedChangeSet.getAuthor().getName(), SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		authorNameText.setLayoutData(textGridData);

 		// Author Email
 		final Label authorEmailLabel = aToolkit.createLabel(basicSectionClient, "Author Email: ", SWT.WRAP);
 		authorEmailLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 		authorEmailText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
 				? ""
 				: selectedChangeSet.getAuthor().getEmail(), SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		authorEmailText.setLayoutData(textGridData);

 		// Date
 		final Label dateLabel = aToolkit.createLabel(basicSectionClient, "Date: ", SWT.WRAP);
 		dateLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 		final String dateStr = dateFormat.format(selectedChangeSet == null ? new Date() : selectedChangeSet.getDate());
 		dateText = aToolkit.createLabel(basicSectionClient, dateStr, SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		dateText.setLayoutData(textGridData);

 		// Repository Name
 		final Label messageLabel = aToolkit.createLabel(basicSectionClient, "Repository: ", SWT.WRAP);
 		messageLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
 		repositoryNameText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
 				? ""
 				: selectedChangeSet.getRepository().getName(), SWT.NONE);
 		textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
 		textGridData.horizontalSpan = 3;
 		repositoryNameText.setLayoutData(textGridData);

 		basicSectionClient.layout();
 	}

 	/**
 	 * Creates the Review Items Components Expandable Composite
 	 *
 	 * @param aToolkit
 	 *            FormToolkit
 	 * @param aParent
 	 *            Composite
 	 */
 	private void createReviewItemComponents(FormToolkit aToolkit, final ScrolledForm aParent) {

 		// Extra parameters section
 		final Section extraSection = aToolkit.createSection(aParent.getBody(), Section.DESCRIPTION
 				| ExpandableComposite.TITLE_BAR | ExpandableComposite.TWISTIE | ExpandableComposite.EXPANDED);
 		final GridData extraSectionGridData = new GridData(GridData.FILL, GridData.FILL, true, true);
 		extraSectionGridData.horizontalSpan = 4;
 		extraSection.setLayoutData(extraSectionGridData);
 		extraSection.setText(COMMIT_COMPONENTS_HEADER_MSG);
 		extraSection.setDescription(FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE);
 		extraSection.addExpansionListener(new ExpansionAdapter() {
 			@Override
 			public void expansionStateChanged(ExpansionEvent e) {
 				aParent.reflow(true);
 				getShell().setSize(getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT));
 			}
 		});

 		final Composite extraSectionClient = aToolkit.createComposite(extraSection);
 		extraSectionClient.setLayout(new GridLayout(4, false));
 		extraSectionClient.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
 		extraSection.setClient(extraSectionClient);

 		// Components List
 		changeList = new org.eclipse.swt.widgets.List(extraSectionClient, SWT.V_SCROLL | SWT.H_SCROLL);
 		if (selectedChangeSet != null) {
 			for (Change change : selectedChangeSet.getChanges()) {
 				changeList.add(getAdjustedPath(change));
 			}
 		}

 		final GridData data = new GridData(GridData.FILL, GridData.FILL, true, true);
 		changeList.setLayoutData(data);
 	}

 	/**
 	 * Fetches and updates the local ChangeSet information
 	 *
 	 * @param aSelectedChangeSet
 	 *            ChangeSet
 	 */
 	private ChangeSet updateChangeSet(ChangeSet aSelectedChangeSet) {
 		String changeSetId = aSelectedChangeSet.getId();
 		ChangeSet updatedChangeSet = null;

 		// IFileRevision
 		IFileRevision fileRevision = createFileRevision(changeSetId);
 		try {
 			updatedChangeSet = connector.getChangeSet(repository, fileRevision, new NullProgressMonitor());
 		} catch (CoreException e) {
 			StatusHandler.log(new Status(IStatus.ERROR, GitConnectorUi.ID_PLUGIN, IStatus.OK, e.toString(), e));
 			return aSelectedChangeSet; // return non-updated ChangeSet
 		}
 		return updatedChangeSet;
 	}

 	/**
 	 * @param changeSetId
 	 *            String
 	 * @return IFileRevision
 	 */
 	private IFileRevision createFileRevision(final String changeSetId) {
 		IFileRevision fileRevision = new FileRevision() {

 			public IFileRevision withAllProperties(IProgressMonitor monitor) throws CoreException {
 				return null;
 			}

 			public boolean isPropertyMissing() {
 				return false;
 			}

 			public IStorage getStorage(IProgressMonitor monitor) throws CoreException {
 				return null;
 			}

 			@Override
 			public String getContentIdentifier() {
 				return changeSetId;
 			}

 			public String getName() {
 				return null;
 			}
 		};
 		return fileRevision;
 	}

 	/**
 	 * Refreshes the Form.
 	 */
 	void refresh() {
 		if (selectedChangeSet != null) {
 			messageText.setText(selectedChangeSet.getMessage());
 			idText.setText(selectedChangeSet.getId());
 			dateText.setText(dateFormat.format(selectedChangeSet.getDate())); // BUG!
 			authorNameText.setText(selectedChangeSet.getAuthor().getName());
 			authorEmailText.setText(selectedChangeSet.getAuthor().getEmail());
 			repositoryNameText.setText(selectedChangeSet.getRepository().getUrl());
 			changeList.removeAll();
 			for (Change change : selectedChangeSet.getChanges()) {
 				changeList.add(getAdjustedPath(change));
 			}
 		}
 	}

 	/**
 	 * @return boolean
 	 * @see org.eclipse.jface.dialogs.Dialog#isResizable()
 	 */
 	@Override
 	protected boolean isResizable() {
 		return true;
 	}

 	/**
 	 * @return ChangeSet
 	 */
 	public ChangeSet getChangeSet() {
 		return selectedChangeSet;
 	}

 	/**
 	 * Add a little Text Decoration if the File was Added or Removed
 	 *
 	 * @param aChange
 	 *            Change
 	 * @return String
 	 */
 	private String getAdjustedPath(Change aChange) {
 		if (aChange.getChangeType().equals(ChangeType.DELETED)) {
 			return "[-] " + aChange.getBase().getPath();
 		} else if (aChange.getChangeType().equals(ChangeType.ADDED)) {
 			return "[+] " + aChange.getTarget().getPath();
 		} else {
 			return "     " + aChange.getTarget().getPath();
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2011 Ericsson Research Canada and others
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Ericsson - Initial API and implementation
	******************************************************************************/

	package org.eclipse.mylyn.internal.git.ui;

	import java.text.SimpleDateFormat;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.List;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IStorage;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.mylyn.commons.core.StatusHandler;
	import org.eclipse.mylyn.internal.git.ui.connector.GitConnectorUi;
	import org.eclipse.mylyn.versions.core.Change;
	import org.eclipse.mylyn.versions.core.ChangeSet;
	import org.eclipse.mylyn.versions.core.ChangeType;
	import org.eclipse.mylyn.versions.core.ScmCore;
	import org.eclipse.mylyn.versions.core.ScmRepository;
	import org.eclipse.mylyn.versions.core.spi.ScmConnector;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.CCombo;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.team.core.history.IFileRevision;
	import org.eclipse.team.core.history.provider.FileRevision;
	import org.eclipse.ui.forms.FormDialog;
	import org.eclipse.ui.forms.IManagedForm;
	import org.eclipse.ui.forms.events.ExpansionAdapter;
	import org.eclipse.ui.forms.events.ExpansionEvent;
	import org.eclipse.ui.forms.widgets.ExpandableComposite;
	import org.eclipse.ui.forms.widgets.FormToolkit;
	import org.eclipse.ui.forms.widgets.ScrolledForm;
	import org.eclipse.ui.forms.widgets.Section;

	/**
	* This class implements the dialog used to fill-in the Find review items details This is a modeless-like dialog.
	*
	* @author Sebastien Dubois
	*/
	public class GetChangeSetDialog extends FormDialog {

	/**
	* Field FIND_REVIEW_ITEMS_DIALOG_TITLE. (value is ""Find Review Items"")
	*/
	private static final String FIND_REVIEW_ITEMS_DIALOG_TITLE = "Find Review Items";

	/**
	* Field FIND_REVIEW_ITEMS_DIALOG_VALUE. (value is ""Review Item Info"")
	*/
	private static final String FIND_REVIEW_ITEMS_DIALOG_VALUE = "Review Item Info";

	/**
	* Field FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE. (value is ""Review Item Components"")
	*/
	private static final String FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE = "Review Item Components";

	/**
	* Field COMMIT_INFO_HEADER_MSG. (value is ""Commit Information"")
	*/
	private static final String COMMIT_INFO_HEADER_MSG = "Commit Information";

	/**
	* Field COMMIT_COMPONENTS_HEADER_MSG. (value is ""Committed Components"")
	*/
	private static final String COMMIT_COMPONENTS_HEADER_MSG = "Committed Components";

	/**
	* Field DIALOG_COMBO_MAX_CHARACTERS. (value is 80)
	*/
	private static final int DIALOG_COMBO_MAX_CHARACTERS = 80;

	/**
	* Field GIT_NEWLINE. (value is "\n")
	*/
	private static final String GIT_NEWLINE = "\n";

	/**
	* Field NUM_COMMIT_SHOWN. (value is 10)
	*/
	private static final int NUM_COMMIT_SHOWN = 10;

	/**
	* Field MORE_ITEMS_LABEL. (value is ""<more items>"")
	*/
	private static final String MORE_ITEMS_LABEL = "<more items>";

	/**
	* Field inputProject - Input project
	*/
	protected final IProject inputProject;

	/**
	* Field commitList
	*/
	private CCombo commitList = null;

	/**
	* Field selectedChangeSet.
	*/
	protected ChangeSet selectedChangeSet = null;

	/**
	* Field messageText.
	*/
	Label messageText = null;

	/**
	* Field idText.
	*/
	Label idText = null;

	/**
	* Field authorNameText.
	*/
	Label authorNameText = null;

	/**
	* Field authorEmailText.
	*/
	Label authorEmailText = null;

	/**
	* Field dateText.
	*/
	Label dateText = null;

	/**
	* Field repositoryNameText.
	*/
	Label repositoryNameText = null;

	/**
	* Field changeList.
	*/
	org.eclipse.swt.widgets.List changeList = null;

	/**
	* Field dateFormat.
	*/
	final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MMM-dd hh:mm:ss");

	/**
	* Field connector
	*/
	private ScmConnector connector = null;

	/**
	* Field repository
	*/
	private ScmRepository repository = null;

	/**
	* Field changeSets - The ChangeSets fetched from the repository
	*/
	private List<ChangeSet> changeSets = null;

	/**
	* Field filteredChangeSets - The ChangeSets that will be displayed
	*/
	private final List<ChangeSet> filteredChangeSets = new ArrayList<ChangeSet>();

	/**
	* Field currentChangeSetIndex - The current index in the fetched ChangeSet List
	*/
	private int currentChangeSetIndex;

	/**
	* Field currentCommitListIndex - The current index in the filtered ChangeSet List
	*/
	private int currentCommitListIndex;

	/**
	* Constructor for R4EReviewGroupInputDialog.
	*
	* @param aParentShell
	* Shell
	* @param aInputProject
	* IProject
	*/
	public GetChangeSetDialog(Shell aParentShell, IProject aInputProject) {
	super(aParentShell);
	setBlockOnOpen(true);
	inputProject = aInputProject;
	}

	/**
	* @param shell
	* Shell
	* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
	*/
	@Override
	protected void configureShell(Shell aShell) {
	super.configureShell(aShell);
	aShell.setText(FIND_REVIEW_ITEMS_DIALOG_TITLE);
	}

	/**
	* Configures the dialog form and creates form content. Clients should override this method.
	*
	* @param mform
	* - the dialog form
	*/
	@Override
	protected void createFormContent(final IManagedForm mform) {

	try {
	connector = ScmCore.getConnector(inputProject);
	repository = connector.getRepository(inputProject, new NullProgressMonitor());
	changeSets = connector.getChangeSets(repository, new NullProgressMonitor());
	currentChangeSetIndex = 0;
	currentCommitListIndex = 0;

	final FormToolkit toolkit = mform.getToolkit();
	final ScrolledForm sform = mform.getForm();
	sform.setExpandVertical(true);

	// Main dialog composite
	final Composite composite = sform.getBody();
	composite.setLayout(new GridLayout(4, false));

	// Add Commit List in drop-down menu
	final Label label = toolkit.createLabel(composite, "Available Commits: ");
	label.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	commitList = new CCombo(composite, SWT.WRAP \| SWT.READ_ONLY);
	populateNextChangeSets();

	commitList.setTextLimit(DIALOG_COMBO_MAX_CHARACTERS);
	commitList.setVisibleItemCount(NUM_COMMIT_SHOWN);
	commitList.select(0);
	if (filteredChangeSets.size() > 0) {
	selectedChangeSet = filteredChangeSets.get(0);
	}
	final GridData textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	commitList.setLayoutData(textGridData);
	commitList.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	int selectedIndex = commitList.getSelectionIndex();
	if (commitList.getItem(selectedIndex).equals(MORE_ITEMS_LABEL)) {
	populateNextChangeSets();
	commitList.select(selectedIndex);
	}

	if (filteredChangeSets.size() > 0) {
	selectedChangeSet = filteredChangeSets.get(selectedIndex);
	}

	refresh();
	}
	});

	createReviewItemDetails(toolkit, sform);
	createReviewItemComponents(toolkit, sform);

	} catch (CoreException e) {
	StatusHandler.log(new Status(IStatus.ERROR, GitConnectorUi.ID_PLUGIN, IStatus.OK, e.toString(), e));
	}
	return;
	}

	/**
	* Gets the information and populates the local data structure with the next round of commit informations
	*/
	protected void populateNextChangeSets() {
	ChangeSet updatedChangeSet = null;
	ChangeSet changeSet = null;
	String repoProject = null;

	// Remove extension item first if present
	if (currentCommitListIndex > 0) {
	commitList.remove(currentCommitListIndex);
	}

	while (currentChangeSetIndex < changeSets.size()) {
	changeSet = changeSets.get(currentChangeSetIndex);
	updatedChangeSet = updateChangeSet(changeSet);

	// Only display commits that contains at least one file from the
	// selected project
	for (Change change : updatedChangeSet.getChanges()) {
	if (change.getTarget() != null) {
	repoProject = change.getTarget().getProjectName();
	} else if (change.getBase() != null) {
	repoProject = change.getBase().getProjectName();
	}
	if (repoProject != null && repoProject.equals(inputProject.getName())) {
	String[] tokens = updatedChangeSet.getMessage().split(GIT_NEWLINE, 2);
	commitList.add((tokens[0].length() > DIALOG_COMBO_MAX_CHARACTERS) ? tokens[0].substring(0,
	DIALOG_COMBO_MAX_CHARACTERS - 3) + "..." : tokens[0]);
	filteredChangeSets.add(updatedChangeSet);
	currentCommitListIndex++;

	// If we already have all the commits from the current batch
	// exit
	if (currentCommitListIndex % NUM_COMMIT_SHOWN == 0) {
	commitList.add(MORE_ITEMS_LABEL);
	currentChangeSetIndex++;
	return;
	}
	break;
	}
	}
	currentChangeSetIndex++;
	}
	return;
	}

	/**
	* Creates the Currently Selected Review Items Details Expandable Composite
	*
	* @param aToolkit
	* FormToolkit
	* @param aParent
	* Composite
	*/
	private void createReviewItemDetails(FormToolkit aToolkit, final ScrolledForm aParent) {

	GridData textGridData = null;

	// Basic parameters section
	final Section basicSection = aToolkit.createSection(aParent.getBody(), Section.DESCRIPTION
	\| ExpandableComposite.TITLE_BAR \| ExpandableComposite.TWISTIE \| ExpandableComposite.EXPANDED);
	final GridData basicSectionGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	basicSectionGridData.horizontalSpan = 4;
	basicSection.setLayoutData(basicSectionGridData);
	basicSection.setText(COMMIT_INFO_HEADER_MSG);
	basicSection.setDescription(FIND_REVIEW_ITEMS_DIALOG_VALUE);
	basicSection.addExpansionListener(new ExpansionAdapter() {
	@Override
	public void expansionStateChanged(ExpansionEvent e) {
	aParent.reflow(true);
	getShell().setSize(getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT));
	}
	});
	final Composite basicSectionClient = aToolkit.createComposite(basicSection);
	basicSectionClient.setLayout(new GridLayout(4, false));
	basicSection.setClient(basicSectionClient);

	// Message
	final Label titleLabel = aToolkit.createLabel(basicSectionClient, "Title: ", SWT.WRAP);
	titleLabel.setLayoutData(new GridData(GridData.FILL, GridData.FILL, false, false));
	messageText = aToolkit.createLabel(basicSectionClient,
	selectedChangeSet == null ? "" : selectedChangeSet.getMessage(), SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	messageText.setLayoutData(textGridData);

	// Id
	final Label idLabel = aToolkit.createLabel(basicSectionClient, "ID: ", SWT.WRAP);
	idLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	idText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null ? "" : selectedChangeSet.getId(),
	SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	idText.setLayoutData(textGridData);

	// Author Name
	final Label authorNameLabel = aToolkit.createLabel(basicSectionClient, "Author Name: ", SWT.WRAP);
	authorNameLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	authorNameText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
	? ""
	: selectedChangeSet.getAuthor().getName(), SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	authorNameText.setLayoutData(textGridData);

	// Author Email
	final Label authorEmailLabel = aToolkit.createLabel(basicSectionClient, "Author Email: ", SWT.WRAP);
	authorEmailLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	authorEmailText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
	? ""
	: selectedChangeSet.getAuthor().getEmail(), SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	authorEmailText.setLayoutData(textGridData);

	// Date
	final Label dateLabel = aToolkit.createLabel(basicSectionClient, "Date: ", SWT.WRAP);
	dateLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	final String dateStr = dateFormat.format(selectedChangeSet == null ? new Date() : selectedChangeSet.getDate());
	dateText = aToolkit.createLabel(basicSectionClient, dateStr, SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	dateText.setLayoutData(textGridData);

	// Repository Name
	final Label messageLabel = aToolkit.createLabel(basicSectionClient, "Repository: ", SWT.WRAP);
	messageLabel.setLayoutData(new GridData(GridData.BEGINNING, GridData.BEGINNING, false, false));
	repositoryNameText = aToolkit.createLabel(basicSectionClient, selectedChangeSet == null
	? ""
	: selectedChangeSet.getRepository().getName(), SWT.NONE);
	textGridData = new GridData(GridData.FILL, GridData.FILL, true, false);
	textGridData.horizontalSpan = 3;
	repositoryNameText.setLayoutData(textGridData);

	basicSectionClient.layout();
	}

	/**
	* Creates the Review Items Components Expandable Composite
	*
	* @param aToolkit
	* FormToolkit
	* @param aParent
	* Composite
	*/
	private void createReviewItemComponents(FormToolkit aToolkit, final ScrolledForm aParent) {

	// Extra parameters section
	final Section extraSection = aToolkit.createSection(aParent.getBody(), Section.DESCRIPTION
	\| ExpandableComposite.TITLE_BAR \| ExpandableComposite.TWISTIE \| ExpandableComposite.EXPANDED);
	final GridData extraSectionGridData = new GridData(GridData.FILL, GridData.FILL, true, true);
	extraSectionGridData.horizontalSpan = 4;
	extraSection.setLayoutData(extraSectionGridData);
	extraSection.setText(COMMIT_COMPONENTS_HEADER_MSG);
	extraSection.setDescription(FIND_REVIEW_ITEMS_DESCRIPTION_DIALOG_VALUE);
	extraSection.addExpansionListener(new ExpansionAdapter() {
	@Override
	public void expansionStateChanged(ExpansionEvent e) {
	aParent.reflow(true);
	getShell().setSize(getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT));
	}
	});

	final Composite extraSectionClient = aToolkit.createComposite(extraSection);
	extraSectionClient.setLayout(new GridLayout(4, false));
	extraSectionClient.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
	extraSection.setClient(extraSectionClient);

	// Components List
	changeList = new org.eclipse.swt.widgets.List(extraSectionClient, SWT.V_SCROLL \| SWT.H_SCROLL);
	if (selectedChangeSet != null) {
	for (Change change : selectedChangeSet.getChanges()) {
	changeList.add(getAdjustedPath(change));
	}
	}

	final GridData data = new GridData(GridData.FILL, GridData.FILL, true, true);
	changeList.setLayoutData(data);
	}

	/**
	* Fetches and updates the local ChangeSet information
	*
	* @param aSelectedChangeSet
	* ChangeSet
	*/
	private ChangeSet updateChangeSet(ChangeSet aSelectedChangeSet) {
	String changeSetId = aSelectedChangeSet.getId();
	ChangeSet updatedChangeSet = null;

	// IFileRevision
	IFileRevision fileRevision = createFileRevision(changeSetId);
	try {
	updatedChangeSet = connector.getChangeSet(repository, fileRevision, new NullProgressMonitor());
	} catch (CoreException e) {
	StatusHandler.log(new Status(IStatus.ERROR, GitConnectorUi.ID_PLUGIN, IStatus.OK, e.toString(), e));
	return aSelectedChangeSet; // return non-updated ChangeSet
	}
	return updatedChangeSet;
	}

	/**
	* @param changeSetId
	* String
	* @return IFileRevision
	*/
	private IFileRevision createFileRevision(final String changeSetId) {
	IFileRevision fileRevision = new FileRevision() {

	public IFileRevision withAllProperties(IProgressMonitor monitor) throws CoreException {
	return null;
	}

	public boolean isPropertyMissing() {
	return false;
	}

	public IStorage getStorage(IProgressMonitor monitor) throws CoreException {
	return null;
	}

	@Override
	public String getContentIdentifier() {
	return changeSetId;
	}

	public String getName() {
	return null;
	}
	};
	return fileRevision;
	}

	/**
	* Refreshes the Form.
	*/
	void refresh() {
	if (selectedChangeSet != null) {
	messageText.setText(selectedChangeSet.getMessage());
	idText.setText(selectedChangeSet.getId());
	dateText.setText(dateFormat.format(selectedChangeSet.getDate())); // BUG!
	authorNameText.setText(selectedChangeSet.getAuthor().getName());
	authorEmailText.setText(selectedChangeSet.getAuthor().getEmail());
	repositoryNameText.setText(selectedChangeSet.getRepository().getUrl());
	changeList.removeAll();
	for (Change change : selectedChangeSet.getChanges()) {
	changeList.add(getAdjustedPath(change));
	}
	}
	}

	/**
	* @return boolean
	* @see org.eclipse.jface.dialogs.Dialog#isResizable()
	*/
	@Override
	protected boolean isResizable() {
	return true;
	}

	/**
	* @return ChangeSet
	*/
	public ChangeSet getChangeSet() {
	return selectedChangeSet;
	}

	/**
	* Add a little Text Decoration if the File was Added or Removed
	*
	* @param aChange
	* Change
	* @return String
	*/
	private String getAdjustedPath(Change aChange) {
	if (aChange.getChangeType().equals(ChangeType.DELETED)) {
	return "[-] " + aChange.getBase().getPath();
	} else if (aChange.getChangeType().equals(ChangeType.ADDED)) {
	return "[+] " + aChange.getTarget().getPath();
	} else {
	return " " + aChange.getTarget().getPath();
	}
	}
	}