org.eclipse.egerrit.ui/src/org/eclipse/egerrit/ui/internal/tabs/MessageTabView.java - egerrit/org.eclipse.egerrit - Git at Google

 /*******************************************************************************
  * Copyright (c) 2015 Ericsson AB.
  * 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:
  *     Jacques Bouthillier - initial API and implementation
  *******************************************************************************/

 package org.eclipse.egerrit.ui.internal.tabs;

 import java.text.SimpleDateFormat;

 import org.apache.http.client.ClientProtocolException;
 import org.eclipse.core.databinding.DataBindingContext;
 import org.eclipse.core.databinding.UpdateValueStrategy;
 import org.eclipse.core.databinding.beans.BeanProperties;
 import org.eclipse.core.databinding.observable.value.IObservableValue;
 import org.eclipse.egerrit.core.EGerritCorePlugin;
 import org.eclipse.egerrit.core.GerritClient;
 import org.eclipse.egerrit.core.command.ChangeCommitMsgCommand;
 import org.eclipse.egerrit.core.command.PublishChangeEditCommand;
 import org.eclipse.egerrit.core.exception.EGerritException;
 import org.eclipse.egerrit.core.rest.ChangeEditMessageInput;
 import org.eclipse.egerrit.core.rest.ChangeInfo;
 import org.eclipse.egerrit.core.rest.CommitInfo;
 import org.eclipse.egerrit.ui.internal.utils.DataConverter;
 import org.eclipse.egerrit.ui.internal.utils.UIUtils;
 import org.eclipse.jface.databinding.swt.WidgetProperties;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.ScrolledComposite;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 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.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.TabFolder;
 import org.eclipse.swt.widgets.TabItem;
 import org.eclipse.swt.widgets.Text;

 /**
  * This class is used in the editor to handle the Gerrit message view
  *
  * @since 1.0
  */
 public class MessageTabView {

 	private Text msgTextData;

 	private Label msgAuthorData;

 	private Label msgDatePushData;

 	private Label msgCommitterData;

 	private Label msgDatecommitterData;

 	private Label msgCommitidData;

 	private Label msgParentIdData;

 	private Label msgChangeIdData;

 	private final SimpleDateFormat formatTimeOut = new SimpleDateFormat("MMM d, yyyy  hh:mm a"); //$NON-NLS-1$

 	private final String TITLE = "Gerrit Server ";

 	private Button fBtnSave;

 	private boolean fIsEditingAllowed;

 	private String fMessageBuffer;

 	// ------------------------------------------------------------------------
 	// Constructor and life cycle
 	// ------------------------------------------------------------------------

 	/**
 	 * The constructor.
 	 */
 	public MessageTabView() {
 	}

 	/**
 	 * @param fGerritClient
 	 * @param tabFolder
 	 * @param listMessages
 	 *            List<ChangeMessageInfo>
 	 */
 	public void create(GerritClient fGerritClient, TabFolder tabFolder, CommitInfo commitInfo, ChangeInfo changeInfo) {
 		messagesTab(fGerritClient, tabFolder, commitInfo, changeInfo);
 	}

 	private void messagesTab(final GerritClient fGerritClient, TabFolder tabFolder, CommitInfo commitInfo,
 			final ChangeInfo changeInfo) {

 		Point fontSize = UIUtils.computeFontSize(tabFolder);
 		final TabItem tabMessages = new TabItem(tabFolder, SWT.NONE);
 		tabMessages.setText("Messages");
 		final ScrolledComposite sc_msg = new ScrolledComposite(tabFolder, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
 		sc_msg.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
 		sc_msg.setExpandHorizontal(true);
 		sc_msg.setExpandVertical(true);
 		final Group messagesGroup = new Group(sc_msg, SWT.NONE);

 		tabMessages.setControl(sc_msg);
 		GridLayout gl_messagesGroup = new GridLayout(4, false);
 		gl_messagesGroup.horizontalSpacing = 10;
 		gl_messagesGroup.marginTop = 3;
 		gl_messagesGroup.marginBottom = 3;
 		messagesGroup.setLayout(gl_messagesGroup);

 		ScrolledComposite sc_msgtxt = new ScrolledComposite(messagesGroup, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
 		sc_msgtxt.setExpandHorizontal(true);
 		sc_msgtxt.setExpandVertical(true);
 		sc_msgtxt.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));

 		msgTextData = new Text(sc_msgtxt, SWT.BORDER | SWT.WRAP | SWT.MULTI);
 		sc_msgtxt.setContent(msgTextData);
 		int minHeight = fontSize.y * 6; //minimum 6 lines
 		sc_msgtxt.setMinSize(msgTextData.computeSize(SWT.DEFAULT, minHeight));

 		Composite composite = new Composite(messagesGroup, SWT.NONE);
 		GridLayout gl_composite = new GridLayout(3, false);
 		gl_composite.marginTop = 3;
 		composite.setLayout(gl_composite);
 		GridData gd_composite = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
 		gd_composite.minimumHeight = 117;
 		composite.setLayoutData(gd_composite);

 		Label lblAuthor = new Label(composite, SWT.NONE);
 		lblAuthor.setText("Author:");

 		msgAuthorData = new Label(composite, SWT.NONE);
 //		msgAuthorData = new StyledText(composite, SWT.NONE);
 		msgAuthorData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

 		msgDatePushData = new Label(composite, SWT.NONE);
 		GridData gd_DatePush = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1);
 		int maxDatePush = 22; //Max number of chars
 		gd_DatePush.widthHint = fontSize.x * maxDatePush;
 		msgDatePushData.setLayoutData(gd_DatePush);

 		Label lblCommitter = new Label(composite, SWT.NONE);
 		lblCommitter.setText("Committer:");

 		msgCommitterData = new Label(composite, SWT.NONE);
 		msgCommitterData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

 		msgDatecommitterData = new Label(composite, SWT.NONE);
 		GridData gd_DateCommitter = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1);
 		int maxDateCommit = 22; //Max number of chars
 		gd_DateCommitter.widthHint = fontSize.x * maxDateCommit;
 		msgDatecommitterData.setLayoutData(gd_DateCommitter);

 		Label lblCommit = new Label(composite, SWT.NONE);
 		lblCommit.setText("Commit:");

 		msgCommitidData = new Label(composite, SWT.NONE);
 		msgCommitidData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		new Label(composite, SWT.NONE);

 		Label lblParents = new Label(composite, SWT.NONE);
 		lblParents.setText("Parent(s):");

 		msgParentIdData = new Label(composite, SWT.NONE);
 		msgParentIdData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

 		new Label(composite, SWT.NONE);

 		Label lblChangeid = new Label(composite, SWT.NONE);
 		lblChangeid.setText("Change-Id:");

 		msgChangeIdData = new Label(composite, SWT.NONE);
 		msgChangeIdData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

 		final Button btnCancel = new Button(messagesGroup, SWT.NONE);
 		GridData gd_btnCancel = new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1);
 		gd_btnCancel.verticalIndent = 10;
 		btnCancel.setLayoutData(gd_btnCancel);
 		btnCancel.setText("Cancel");
 		btnCancel.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				msgTextData.setText(getfMessageBuffer());
 				fBtnSave.setEnabled(false);
 				btnCancel.setEnabled(false);
 			}
 		});

 		fBtnSave = new Button(messagesGroup, SWT.NONE);
 		GridData gd_btnSave_1 = new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1);
 		gd_btnSave_1.verticalIndent = 10;
 		fBtnSave.setLayoutData(gd_btnSave_1);
 		fBtnSave.setText("Save");

 		ModifyListener modifyListener = new ModifyListener() {
 			public void modifyText(ModifyEvent event) {
 				fBtnSave.setEnabled(isEditingAllowed());
 				btnCancel.setEnabled(isEditingAllowed());
 			}
 		};

 		FocusListener focusListener = new FocusListener() {

 			@Override
 			public void focusGained(FocusEvent e) {
 				msgTextData.setEditable(isEditingAllowed());
 			}

 			@Override
 			public void focusLost(FocusEvent e) {

 			}

 		};

 		msgTextData.addModifyListener(modifyListener);
 		msgTextData.addFocusListener(focusListener);

 		fBtnSave.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				super.widgetSelected(e);
 				ChangeCommitMsgCommand editMessageCmd = fGerritClient.editMessage(changeInfo.getId());
 				ChangeEditMessageInput changeEditMessageInput = new ChangeEditMessageInput();
 				changeEditMessageInput.setMessage(msgTextData.getText());
 				editMessageCmd.setChangeEditMessageInput(changeEditMessageInput);
 				PublishChangeEditCommand publishChangeEditCmd = fGerritClient.publishChangeEdit(changeInfo.getId());

 				String editMessageCmdResult = null, publishChangeEditCmdResult = null;
 				try {
 					editMessageCmdResult = editMessageCmd.call();
 					publishChangeEditCmdResult = publishChangeEditCmd.call();
 				} catch (EGerritException e3) {
 					EGerritCorePlugin.logError(e3.getMessage());
 				} catch (ClientProtocolException e3) {
 					UIUtils.displayInformation(null, TITLE,
 							e3.getLocalizedMessage() + "\n " + editMessageCmd.formatRequest()); //$NON-NLS-1$
 				}
 				fBtnSave.setEnabled(false);
 				btnCancel.setEnabled(false);
 				setfMessageBuffer(msgTextData.getText());

 			}
 		});

 		new Label(messagesGroup, SWT.NONE);

 		sc_msg.setContent(messagesGroup);

 		//Set the binding for this section
 		msgTabDataBindings(commitInfo, changeInfo);
 	}

 	protected DataBindingContext msgTabDataBindings(CommitInfo commitInfo, ChangeInfo changeInfo) {
 		DataBindingContext bindingContext = new DataBindingContext();

 		//
 		IObservableValue observeMsgTextDataWidget = WidgetProperties.text().observe(msgTextData);
 		IObservableValue msgTextDataValue = BeanProperties.value("message").observe(commitInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeMsgTextDataWidget, msgTextDataValue, null, null);
 		//
 		IObservableValue observeTextMsgAuthorDataWidget = WidgetProperties.text().observe(msgAuthorData);
 		IObservableValue msgAuthorDataValue = BeanProperties.value("author").observe(commitInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeTextMsgAuthorDataWidget, msgAuthorDataValue, null,
 				new UpdateValueStrategy().setConverter(DataConverter.gitPersonConverter()));

 		//
 		IObservableValue TextMsgAuthorDateDataWidget = WidgetProperties.text().observe(msgDatePushData);
 		IObservableValue msgAuthorDateDataValue = BeanProperties.value(CommitInfo.class, "author.date").observe( //$NON-NLS-1$
 				commitInfo);
 		bindingContext.bindValue(TextMsgAuthorDateDataWidget, msgAuthorDateDataValue, null,
 				new UpdateValueStrategy().setConverter(DataConverter.gerritTimeConverter(formatTimeOut)));

 		//
 		IObservableValue observeTextMsgCommitterDataWidget = WidgetProperties.text().observe(msgCommitterData);
 		IObservableValue msgCommitterDataValue = BeanProperties.value("committer").observe(commitInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeTextMsgCommitterDataWidget, msgCommitterDataValue, null,
 				new UpdateValueStrategy().setConverter(DataConverter.gitPersonConverter()));

 		//
 		IObservableValue TextMsgCommitterDateDataWidget = WidgetProperties.text().observe(msgDatecommitterData);
 		IObservableValue msgCommitterDateDataValue = BeanProperties.value(CommitInfo.class, "committer.date").observe( //$NON-NLS-1$
 				commitInfo);
 		bindingContext.bindValue(TextMsgCommitterDateDataWidget, msgCommitterDateDataValue, null,
 				new UpdateValueStrategy().setConverter(DataConverter.gerritTimeConverter(formatTimeOut)));

 		//
 		IObservableValue observeTextMsgCommitidDataWidget = WidgetProperties.text().observe(msgCommitidData);
 		IObservableValue msgCommitidDataValue = BeanProperties.value("commit").observe(commitInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeTextMsgCommitidDataWidget, msgCommitidDataValue, null, null);
 		//
 		IObservableValue observeTextMsgParentIdDataWidget = WidgetProperties.text().observe(msgParentIdData);
 		IObservableValue msgParentIdDataValue = BeanProperties.value("parents").observe(commitInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeTextMsgParentIdDataWidget, msgParentIdDataValue, null,
 				new UpdateValueStrategy().setConverter(DataConverter.commitInfoIDConverter()));
 		//
 		IObservableValue observeTextMsgChangeIdDataWidget = WidgetProperties.text().observe(msgChangeIdData);
 		IObservableValue msgChangeIdDataValue = BeanProperties.value("change_id").observe(changeInfo); //$NON-NLS-1$
 		bindingContext.bindValue(observeTextMsgChangeIdDataWidget, msgChangeIdDataValue, null, null);

 		return bindingContext;
 	}

 	/**
 	 * Enable editing on this screen for the current session
 	 *
 	 * @param isEditingAllowed
 	 *            whether editing is enabled or not
 	 */
 	public void editingAllowed(boolean isEditingAllowed) {
 		fIsEditingAllowed = isEditingAllowed;

 	}

 	private boolean isEditingAllowed() {
 		return fIsEditingAllowed;
 	}

 	/**
 	 * @return the fMessageBuffer
 	 */
 	public String getfMessageBuffer() {
 		return fMessageBuffer;
 	}

 	/**
 	 * @param fMessageBuffer
 	 *            the message to set to save a buffer
 	 */
 	public void setfMessageBuffer(String fMessageBuffer) {
 		this.fMessageBuffer = fMessageBuffer;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2015 Ericsson AB.
	* 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:
	* Jacques Bouthillier - initial API and implementation
	*******************************************************************************/

	package org.eclipse.egerrit.ui.internal.tabs;

	import java.text.SimpleDateFormat;

	import org.apache.http.client.ClientProtocolException;
	import org.eclipse.core.databinding.DataBindingContext;
	import org.eclipse.core.databinding.UpdateValueStrategy;
	import org.eclipse.core.databinding.beans.BeanProperties;
	import org.eclipse.core.databinding.observable.value.IObservableValue;
	import org.eclipse.egerrit.core.EGerritCorePlugin;
	import org.eclipse.egerrit.core.GerritClient;
	import org.eclipse.egerrit.core.command.ChangeCommitMsgCommand;
	import org.eclipse.egerrit.core.command.PublishChangeEditCommand;
	import org.eclipse.egerrit.core.exception.EGerritException;
	import org.eclipse.egerrit.core.rest.ChangeEditMessageInput;
	import org.eclipse.egerrit.core.rest.ChangeInfo;
	import org.eclipse.egerrit.core.rest.CommitInfo;
	import org.eclipse.egerrit.ui.internal.utils.DataConverter;
	import org.eclipse.egerrit.ui.internal.utils.UIUtils;
	import org.eclipse.jface.databinding.swt.WidgetProperties;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.ScrolledComposite;
	import org.eclipse.swt.events.FocusEvent;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	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.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.TabFolder;
	import org.eclipse.swt.widgets.TabItem;
	import org.eclipse.swt.widgets.Text;

	/**
	* This class is used in the editor to handle the Gerrit message view
	*
	* @since 1.0
	*/
	public class MessageTabView {

	private Text msgTextData;

	private Label msgAuthorData;

	private Label msgDatePushData;

	private Label msgCommitterData;

	private Label msgDatecommitterData;

	private Label msgCommitidData;

	private Label msgParentIdData;

	private Label msgChangeIdData;

	private final SimpleDateFormat formatTimeOut = new SimpleDateFormat("MMM d, yyyy hh:mm a"); //$NON-NLS-1$

	private final String TITLE = "Gerrit Server ";

	private Button fBtnSave;

	private boolean fIsEditingAllowed;

	private String fMessageBuffer;

	// ------------------------------------------------------------------------
	// Constructor and life cycle
	// ------------------------------------------------------------------------

	/**
	* The constructor.
	*/
	public MessageTabView() {
	}

	/**
	* @param fGerritClient
	* @param tabFolder
	* @param listMessages
	* List<ChangeMessageInfo>
	*/
	public void create(GerritClient fGerritClient, TabFolder tabFolder, CommitInfo commitInfo, ChangeInfo changeInfo) {
	messagesTab(fGerritClient, tabFolder, commitInfo, changeInfo);
	}

	private void messagesTab(final GerritClient fGerritClient, TabFolder tabFolder, CommitInfo commitInfo,
	final ChangeInfo changeInfo) {

	Point fontSize = UIUtils.computeFontSize(tabFolder);
	final TabItem tabMessages = new TabItem(tabFolder, SWT.NONE);
	tabMessages.setText("Messages");
	final ScrolledComposite sc_msg = new ScrolledComposite(tabFolder, SWT.BORDER \| SWT.H_SCROLL \| SWT.V_SCROLL);
	sc_msg.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
	sc_msg.setExpandHorizontal(true);
	sc_msg.setExpandVertical(true);
	final Group messagesGroup = new Group(sc_msg, SWT.NONE);

	tabMessages.setControl(sc_msg);
	GridLayout gl_messagesGroup = new GridLayout(4, false);
	gl_messagesGroup.horizontalSpacing = 10;
	gl_messagesGroup.marginTop = 3;
	gl_messagesGroup.marginBottom = 3;
	messagesGroup.setLayout(gl_messagesGroup);

	ScrolledComposite sc_msgtxt = new ScrolledComposite(messagesGroup, SWT.BORDER \| SWT.H_SCROLL \| SWT.V_SCROLL);
	sc_msgtxt.setExpandHorizontal(true);
	sc_msgtxt.setExpandVertical(true);
	sc_msgtxt.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));

	msgTextData = new Text(sc_msgtxt, SWT.BORDER \| SWT.WRAP \| SWT.MULTI);
	sc_msgtxt.setContent(msgTextData);
	int minHeight = fontSize.y * 6; //minimum 6 lines
	sc_msgtxt.setMinSize(msgTextData.computeSize(SWT.DEFAULT, minHeight));

	Composite composite = new Composite(messagesGroup, SWT.NONE);
	GridLayout gl_composite = new GridLayout(3, false);
	gl_composite.marginTop = 3;
	composite.setLayout(gl_composite);
	GridData gd_composite = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
	gd_composite.minimumHeight = 117;
	composite.setLayoutData(gd_composite);

	Label lblAuthor = new Label(composite, SWT.NONE);
	lblAuthor.setText("Author:");

	msgAuthorData = new Label(composite, SWT.NONE);
	// msgAuthorData = new StyledText(composite, SWT.NONE);
	msgAuthorData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

	msgDatePushData = new Label(composite, SWT.NONE);
	GridData gd_DatePush = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1);
	int maxDatePush = 22; //Max number of chars
	gd_DatePush.widthHint = fontSize.x * maxDatePush;
	msgDatePushData.setLayoutData(gd_DatePush);

	Label lblCommitter = new Label(composite, SWT.NONE);
	lblCommitter.setText("Committer:");

	msgCommitterData = new Label(composite, SWT.NONE);
	msgCommitterData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

	msgDatecommitterData = new Label(composite, SWT.NONE);
	GridData gd_DateCommitter = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1);
	int maxDateCommit = 22; //Max number of chars
	gd_DateCommitter.widthHint = fontSize.x * maxDateCommit;
	msgDatecommitterData.setLayoutData(gd_DateCommitter);

	Label lblCommit = new Label(composite, SWT.NONE);
	lblCommit.setText("Commit:");

	msgCommitidData = new Label(composite, SWT.NONE);
	msgCommitidData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	new Label(composite, SWT.NONE);

	Label lblParents = new Label(composite, SWT.NONE);
	lblParents.setText("Parent(s):");

	msgParentIdData = new Label(composite, SWT.NONE);
	msgParentIdData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

	new Label(composite, SWT.NONE);

	Label lblChangeid = new Label(composite, SWT.NONE);
	lblChangeid.setText("Change-Id:");

	msgChangeIdData = new Label(composite, SWT.NONE);
	msgChangeIdData.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

	final Button btnCancel = new Button(messagesGroup, SWT.NONE);
	GridData gd_btnCancel = new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1);
	gd_btnCancel.verticalIndent = 10;
	btnCancel.setLayoutData(gd_btnCancel);
	btnCancel.setText("Cancel");
	btnCancel.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	msgTextData.setText(getfMessageBuffer());
	fBtnSave.setEnabled(false);
	btnCancel.setEnabled(false);
	}
	});

	fBtnSave = new Button(messagesGroup, SWT.NONE);
	GridData gd_btnSave_1 = new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1);
	gd_btnSave_1.verticalIndent = 10;
	fBtnSave.setLayoutData(gd_btnSave_1);
	fBtnSave.setText("Save");

	ModifyListener modifyListener = new ModifyListener() {
	public void modifyText(ModifyEvent event) {
	fBtnSave.setEnabled(isEditingAllowed());
	btnCancel.setEnabled(isEditingAllowed());
	}
	};

	FocusListener focusListener = new FocusListener() {

	@Override
	public void focusGained(FocusEvent e) {
	msgTextData.setEditable(isEditingAllowed());
	}

	@Override
	public void focusLost(FocusEvent e) {

	}

	};

	msgTextData.addModifyListener(modifyListener);
	msgTextData.addFocusListener(focusListener);

	fBtnSave.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	super.widgetSelected(e);
	ChangeCommitMsgCommand editMessageCmd = fGerritClient.editMessage(changeInfo.getId());
	ChangeEditMessageInput changeEditMessageInput = new ChangeEditMessageInput();
	changeEditMessageInput.setMessage(msgTextData.getText());
	editMessageCmd.setChangeEditMessageInput(changeEditMessageInput);
	PublishChangeEditCommand publishChangeEditCmd = fGerritClient.publishChangeEdit(changeInfo.getId());

	String editMessageCmdResult = null, publishChangeEditCmdResult = null;
	try {
	editMessageCmdResult = editMessageCmd.call();
	publishChangeEditCmdResult = publishChangeEditCmd.call();
	} catch (EGerritException e3) {
	EGerritCorePlugin.logError(e3.getMessage());
	} catch (ClientProtocolException e3) {
	UIUtils.displayInformation(null, TITLE,
	e3.getLocalizedMessage() + "\n " + editMessageCmd.formatRequest()); //$NON-NLS-1$
	}
	fBtnSave.setEnabled(false);
	btnCancel.setEnabled(false);
	setfMessageBuffer(msgTextData.getText());

	}
	});

	new Label(messagesGroup, SWT.NONE);

	sc_msg.setContent(messagesGroup);

	//Set the binding for this section
	msgTabDataBindings(commitInfo, changeInfo);
	}

	protected DataBindingContext msgTabDataBindings(CommitInfo commitInfo, ChangeInfo changeInfo) {
	DataBindingContext bindingContext = new DataBindingContext();

	//
	IObservableValue observeMsgTextDataWidget = WidgetProperties.text().observe(msgTextData);
	IObservableValue msgTextDataValue = BeanProperties.value("message").observe(commitInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeMsgTextDataWidget, msgTextDataValue, null, null);
	//
	IObservableValue observeTextMsgAuthorDataWidget = WidgetProperties.text().observe(msgAuthorData);
	IObservableValue msgAuthorDataValue = BeanProperties.value("author").observe(commitInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeTextMsgAuthorDataWidget, msgAuthorDataValue, null,
	new UpdateValueStrategy().setConverter(DataConverter.gitPersonConverter()));

	//
	IObservableValue TextMsgAuthorDateDataWidget = WidgetProperties.text().observe(msgDatePushData);
	IObservableValue msgAuthorDateDataValue = BeanProperties.value(CommitInfo.class, "author.date").observe( //$NON-NLS-1$
	commitInfo);
	bindingContext.bindValue(TextMsgAuthorDateDataWidget, msgAuthorDateDataValue, null,
	new UpdateValueStrategy().setConverter(DataConverter.gerritTimeConverter(formatTimeOut)));

	//
	IObservableValue observeTextMsgCommitterDataWidget = WidgetProperties.text().observe(msgCommitterData);
	IObservableValue msgCommitterDataValue = BeanProperties.value("committer").observe(commitInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeTextMsgCommitterDataWidget, msgCommitterDataValue, null,
	new UpdateValueStrategy().setConverter(DataConverter.gitPersonConverter()));

	//
	IObservableValue TextMsgCommitterDateDataWidget = WidgetProperties.text().observe(msgDatecommitterData);
	IObservableValue msgCommitterDateDataValue = BeanProperties.value(CommitInfo.class, "committer.date").observe( //$NON-NLS-1$
	commitInfo);
	bindingContext.bindValue(TextMsgCommitterDateDataWidget, msgCommitterDateDataValue, null,
	new UpdateValueStrategy().setConverter(DataConverter.gerritTimeConverter(formatTimeOut)));

	//
	IObservableValue observeTextMsgCommitidDataWidget = WidgetProperties.text().observe(msgCommitidData);
	IObservableValue msgCommitidDataValue = BeanProperties.value("commit").observe(commitInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeTextMsgCommitidDataWidget, msgCommitidDataValue, null, null);
	//
	IObservableValue observeTextMsgParentIdDataWidget = WidgetProperties.text().observe(msgParentIdData);
	IObservableValue msgParentIdDataValue = BeanProperties.value("parents").observe(commitInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeTextMsgParentIdDataWidget, msgParentIdDataValue, null,
	new UpdateValueStrategy().setConverter(DataConverter.commitInfoIDConverter()));
	//
	IObservableValue observeTextMsgChangeIdDataWidget = WidgetProperties.text().observe(msgChangeIdData);
	IObservableValue msgChangeIdDataValue = BeanProperties.value("change_id").observe(changeInfo); //$NON-NLS-1$
	bindingContext.bindValue(observeTextMsgChangeIdDataWidget, msgChangeIdDataValue, null, null);

	return bindingContext;
	}

	/**
	* Enable editing on this screen for the current session
	*
	* @param isEditingAllowed
	* whether editing is enabled or not
	*/
	public void editingAllowed(boolean isEditingAllowed) {
	fIsEditingAllowed = isEditingAllowed;

	}

	private boolean isEditingAllowed() {
	return fIsEditingAllowed;
	}

	/**
	* @return the fMessageBuffer
	*/
	public String getfMessageBuffer() {
	return fMessageBuffer;
	}

	/**
	* @param fMessageBuffer
	* the message to set to save a buffer
	*/
	public void setfMessageBuffer(String fMessageBuffer) {
	this.fMessageBuffer = fMessageBuffer;
	}
	}