plugins/org.eclipse.epp.usagedata.ui/src/org/eclipse/epp/usagedata/internal/ui/preferences/UsageDataUploadingPreferencesPage.java - gerrit/epp/org.eclipse.epp.usagedata - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007 The Eclipse Foundation.
  * 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:
  *    The Eclipse Foundation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.epp.usagedata.internal.ui.preferences;

 import java.util.Date;

 import org.eclipse.epp.usagedata.internal.gathering.UsageDataCaptureActivator;
 import org.eclipse.epp.usagedata.internal.gathering.settings.UsageDataCaptureSettings;
 import org.eclipse.epp.usagedata.internal.recording.UsageDataRecordingActivator;
 import org.eclipse.epp.usagedata.internal.recording.settings.UsageDataRecordingSettings;
 import org.eclipse.jface.fieldassist.ControlDecoration;
 import org.eclipse.jface.fieldassist.FieldDecoration;
 import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.util.IPropertyChangeListener;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.swt.SWT;
 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.GC;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.layout.RowLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;

 import java.text.MessageFormat;

 public class UsageDataUploadingPreferencesPage extends PreferencePage
 	implements IWorkbenchPreferencePage {

 	private static final int MILLISECONDS_IN_ONE_DAY = 24 * 60 * 60 * 1000;

 	private static final long MINIMUM_PERIOD_IN_DAYS = UsageDataRecordingSettings.PERIOD_REASONABLE_MINIMUM / MILLISECONDS_IN_ONE_DAY;
 	private static final long MAXIMUM_PERIOD_IN_DAYS = 90;

 	private Text uploadPeriodText;
 	private Label label;
 	private Text lastUploadText;

 	private Button askBeforeUploadingCheckbox;

 	private Button uploadNowButton;

 	IPropertyChangeListener capturePropertyChangeListener = new IPropertyChangeListener() {
 		public void propertyChange(PropertyChangeEvent event) {
 			if (UsageDataCaptureSettings.CAPTURE_ENABLED_KEY.equals(event.getProperty())) {
 				updateButtons();
 				return;
 			}
 		}
 	};

 	IPropertyChangeListener recordingPropertyChangeListener = new IPropertyChangeListener() {
 		public void propertyChange(PropertyChangeEvent event) {
 			if (UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY.equals(event.getProperty())) {
 				getControl().getDisplay().syncExec(new Runnable() {
 					public void run() {
 						updateAskToUploadCheckbox();
 					}
 				});
 				return;
 			}

 			if (UsageDataRecordingSettings.UPLOAD_PERIOD_KEY.equals(event.getProperty())) {
 				getControl().getDisplay().syncExec(new Runnable() {
 					public void run() {
 						updateUploadPeriodText();
 					}
 				});
 				return;
 			}

 			if (UsageDataRecordingSettings.LAST_UPLOAD_KEY.equals(event.getProperty())) {
 				getControl().getDisplay().syncExec(new Runnable() {
 					public void run() {
 						updateLastUploadText();
 					}
 				});
 				return;
 			}
 		}
 	};

 	public UsageDataUploadingPreferencesPage() {
 		setDescription(Messages.UsageDataUploadingPreferencesPage_0);
 		setPreferenceStore(UsageDataRecordingActivator.getDefault().getPreferenceStore());
 	}


 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {
 		getCapturePreferenceStore().addPropertyChangeListener(capturePropertyChangeListener);
 		getPreferenceStore().addPropertyChangeListener(recordingPropertyChangeListener);
 	}

 	@Override
 	public void dispose() {
 		getCapturePreferenceStore().removePropertyChangeListener(capturePropertyChangeListener);
 		getPreferenceStore().removePropertyChangeListener(recordingPropertyChangeListener);
 		super.dispose();
 	}

 	@Override
 	protected Control createContents(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(GridData.FILL_BOTH));

 		composite.setLayout(new GridLayout());

 		createGeneralInformationArea(composite);
 		createUploadingArea(composite);
 		createButtonsArea(composite);

 		Label filler = new Label(parent, SWT.NONE);
 		filler.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, true));

 		initialize();

 		return composite;
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void initialize() {
 		updateAskToUploadCheckbox();
 		updateUploadPeriodText();
 		updateLastUploadText();
 		updateButtons();
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void updateLastUploadText() {
 		lastUploadText.setText(getLastUploadDateAsString());
 	}


 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void updateUploadPeriodText() {
 		uploadPeriodText.setText(String.valueOf(getRecordingPreferences().getLong(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) / MILLISECONDS_IN_ONE_DAY));
 	}


 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void updateAskToUploadCheckbox() {
 		askBeforeUploadingCheckbox.setSelection(getRecordingPreferences().getBoolean(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY));
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void updateButtons() {
 		uploadNowButton.setEnabled(getCapturePreferenceStore().getBoolean(UsageDataCaptureSettings.CAPTURE_ENABLED_KEY));
 	}


 	private IPreferenceStore getCapturePreferenceStore() {
 		return UsageDataCaptureActivator.getDefault().getPreferenceStore();
 	}


 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	@Override
 	public boolean performOk() {
 		getRecordingPreferences().setValue(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY, askBeforeUploadingCheckbox.getSelection());
 		getRecordingPreferences().setValue(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY, Long.valueOf(uploadPeriodText.getText()) * MILLISECONDS_IN_ONE_DAY);

 		return super.performOk();
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	@Override
 	public boolean isValid() {
 		if (!isValidUploadPeriod(uploadPeriodText.getText())) return false;
 		return true;
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	@Override
 	protected void performDefaults() {
 		askBeforeUploadingCheckbox.setSelection(getRecordingPreferences().getDefaultBoolean(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY));
 		uploadPeriodText.setText(String.valueOf(getRecordingPreferences().getDefaultLong(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) / MILLISECONDS_IN_ONE_DAY));

 		updateLastUploadText();

 		super.performDefaults();
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createGeneralInformationArea(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, false));

 		composite.setLayout(new GridLayout());

 		askBeforeUploadingCheckbox = new Button(composite, SWT.CHECK | SWT.LEFT);
 		askBeforeUploadingCheckbox.setText(Messages.UsageDataUploadingPreferencesPage_1);
 	}


 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createUploadingArea(Composite parent) {
 		Group group = new Group(parent, SWT.NONE);
 		group.setText(Messages.UsageDataUploadingPreferencesPage_2);
 		group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

 		group.setLayout(new GridLayout(3, false));

 		// Create the layout that will be used by all the fields.
 		GridData fieldLayoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
 		fieldLayoutData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();

 		createUploadPeriodField(group);
 		createLastUploadField(group);
 		createUploadUrlField(group);
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createUploadPeriodField(Group composite) {
 		Label label = new Label(composite, SWT.NONE);
 		label.setText(Messages.UsageDataUploadingPreferencesPage_3);

 		uploadPeriodText = new Text(composite, SWT.SINGLE | SWT.BORDER | SWT.RIGHT);
 		uploadPeriodText.setTextLimit(2);
 		GridData gridData = new GridData(SWT.FILL, SWT.CENTER, false, false);
 		gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
 		gridData.horizontalSpan = 1;
 		GC gc = new GC(uploadPeriodText.getDisplay());
 		gc.setFont(uploadPeriodText.getFont());
 		gridData.widthHint = gc.stringExtent(String.valueOf(MAXIMUM_PERIOD_IN_DAYS)).x;
 		gc.dispose();
 		uploadPeriodText.setLayoutData(gridData);

 		new Label(composite, SWT.NONE).setText(Messages.UsageDataUploadingPreferencesPage_4);

 		final ControlDecoration rangeErrorDecoration = new ControlDecoration(uploadPeriodText, SWT.LEFT | SWT.TOP);
 		rangeErrorDecoration.setDescriptionText(MessageFormat.format(Messages.UsageDataUploadingPreferencesPage_5, new Object[] {MINIMUM_PERIOD_IN_DAYS, MAXIMUM_PERIOD_IN_DAYS}));
 		rangeErrorDecoration.setImage(getErrorImage());
 		rangeErrorDecoration.hide();

 		uploadPeriodText.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				String contents = uploadPeriodText.getText();
 				if (isValidUploadPeriod(contents))
 					rangeErrorDecoration.hide();
 				else {
 					rangeErrorDecoration.show();
 				}
 				updateApplyButton();
 				getContainer().updateButtons();
 			}
 		});
 		if (System.getProperty(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) != null) {
 			addOverrideWarning(uploadPeriodText);
 		}
 	}

 	private boolean isValidUploadPeriod(String text) {
 		try {
 			long value = Long.parseLong(text);
 			if (value < MINIMUM_PERIOD_IN_DAYS)
 				return false;
 			if (value > MAXIMUM_PERIOD_IN_DAYS)
 				return false;
 		} catch (NumberFormatException e) {
 			return false;
 		}
 		return true;
 	}

 	private Image getErrorImage() {
 		return FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_ERROR).getImage();
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createLastUploadField(Group composite) {
 		label = new Label(composite, SWT.NONE);
 		label.setText(Messages.UsageDataUploadingPreferencesPage_6);

 		lastUploadText = new Text(composite, SWT.SINGLE | SWT.BORDER);
 		lastUploadText.setEnabled(false);
 		GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
 		gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
 		gridData.horizontalSpan = 2;
 		lastUploadText.setLayoutData(gridData);
 	}

 	/*
 	 * The Upload URL is not expected to change during execution, so
 	 * we make not consideration for changes while the preferences
 	 * page is open.
 	 *
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createUploadUrlField(Group composite) {
 		label = new Label(composite, SWT.NONE);
 		label.setText(Messages.UsageDataUploadingPreferencesPage_9);

 		Text uploadUrlText = new Text(composite, SWT.SINGLE | SWT.BORDER);
 		uploadUrlText.setEnabled(false);
 		GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
 		gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
 		gridData.horizontalSpan = 2;
 		uploadUrlText.setLayoutData(gridData);
 		uploadUrlText.setText(getSettings().getUploadUrl());
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createButtonsArea(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

 		composite.setLayout(new RowLayout());

 		createUploadNowButton(composite);
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	protected IWorkbenchPage getPage() {
 		return PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
 	}


 	protected UsageDataRecordingSettings getSettings() {
 		return UsageDataRecordingActivator.getDefault().getSettings();
 	}


 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void createUploadNowButton(Composite composite) {
 		uploadNowButton = new Button(composite, SWT.PUSH);
 		uploadNowButton.setText(Messages.UsageDataUploadingPreferencesPage_7);
 		uploadNowButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				UsageDataRecordingActivator.getDefault().getUploadManager().startUpload();
 			}
 		});
 	}

 	/*
 	 * Note that this method expects to be run in the UI Thread.
 	 */
 	private void addOverrideWarning(Control control) {
 		FieldDecoration decoration = FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_WARNING);
 		ControlDecoration warning = new ControlDecoration(control, SWT.BOTTOM | SWT.LEFT);
 		warning.setImage(decoration.getImage());
 		warning.setDescriptionText(Messages.UsageDataUploadingPreferencesPage_8);
 	}

 	private String getLastUploadDateAsString() {
 		long time = getRecordingSettings().getLastUploadTime();
 		Date date = new Date(time);
 		return date.toString();
 	}


 	private IPreferenceStore getRecordingPreferences() {
 		return UsageDataRecordingActivator.getDefault().getPreferenceStore();
 	}

 	private UsageDataRecordingSettings getRecordingSettings() {
 		return UsageDataRecordingActivator.getDefault().getSettings();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007 The Eclipse Foundation.
	* 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:
	* The Eclipse Foundation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.epp.usagedata.internal.ui.preferences;

	import java.util.Date;

	import org.eclipse.epp.usagedata.internal.gathering.UsageDataCaptureActivator;
	import org.eclipse.epp.usagedata.internal.gathering.settings.UsageDataCaptureSettings;
	import org.eclipse.epp.usagedata.internal.recording.UsageDataRecordingActivator;
	import org.eclipse.epp.usagedata.internal.recording.settings.UsageDataRecordingSettings;
	import org.eclipse.jface.fieldassist.ControlDecoration;
	import org.eclipse.jface.fieldassist.FieldDecoration;
	import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.util.IPropertyChangeListener;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.swt.SWT;
	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.GC;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.layout.RowLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;

	import java.text.MessageFormat;

	public class UsageDataUploadingPreferencesPage extends PreferencePage
	implements IWorkbenchPreferencePage {

	private static final int MILLISECONDS_IN_ONE_DAY = 24 * 60 * 60 * 1000;

	private static final long MINIMUM_PERIOD_IN_DAYS = UsageDataRecordingSettings.PERIOD_REASONABLE_MINIMUM / MILLISECONDS_IN_ONE_DAY;
	private static final long MAXIMUM_PERIOD_IN_DAYS = 90;

	private Text uploadPeriodText;
	private Label label;
	private Text lastUploadText;

	private Button askBeforeUploadingCheckbox;

	private Button uploadNowButton;

	IPropertyChangeListener capturePropertyChangeListener = new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	if (UsageDataCaptureSettings.CAPTURE_ENABLED_KEY.equals(event.getProperty())) {
	updateButtons();
	return;
	}
	}
	};

	IPropertyChangeListener recordingPropertyChangeListener = new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	if (UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY.equals(event.getProperty())) {
	getControl().getDisplay().syncExec(new Runnable() {
	public void run() {
	updateAskToUploadCheckbox();
	}
	});
	return;
	}

	if (UsageDataRecordingSettings.UPLOAD_PERIOD_KEY.equals(event.getProperty())) {
	getControl().getDisplay().syncExec(new Runnable() {
	public void run() {
	updateUploadPeriodText();
	}
	});
	return;
	}

	if (UsageDataRecordingSettings.LAST_UPLOAD_KEY.equals(event.getProperty())) {
	getControl().getDisplay().syncExec(new Runnable() {
	public void run() {
	updateLastUploadText();
	}
	});
	return;
	}
	}
	};

	public UsageDataUploadingPreferencesPage() {
	setDescription(Messages.UsageDataUploadingPreferencesPage_0);
	setPreferenceStore(UsageDataRecordingActivator.getDefault().getPreferenceStore());
	}


	/* (non-Javadoc)
	* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	*/
	public void init(IWorkbench workbench) {
	getCapturePreferenceStore().addPropertyChangeListener(capturePropertyChangeListener);
	getPreferenceStore().addPropertyChangeListener(recordingPropertyChangeListener);
	}

	@Override
	public void dispose() {
	getCapturePreferenceStore().removePropertyChangeListener(capturePropertyChangeListener);
	getPreferenceStore().removePropertyChangeListener(recordingPropertyChangeListener);
	super.dispose();
	}

	@Override
	protected Control createContents(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));

	composite.setLayout(new GridLayout());

	createGeneralInformationArea(composite);
	createUploadingArea(composite);
	createButtonsArea(composite);

	Label filler = new Label(parent, SWT.NONE);
	filler.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, true));

	initialize();

	return composite;
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void initialize() {
	updateAskToUploadCheckbox();
	updateUploadPeriodText();
	updateLastUploadText();
	updateButtons();
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void updateLastUploadText() {
	lastUploadText.setText(getLastUploadDateAsString());
	}


	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void updateUploadPeriodText() {
	uploadPeriodText.setText(String.valueOf(getRecordingPreferences().getLong(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) / MILLISECONDS_IN_ONE_DAY));
	}


	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void updateAskToUploadCheckbox() {
	askBeforeUploadingCheckbox.setSelection(getRecordingPreferences().getBoolean(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY));
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void updateButtons() {
	uploadNowButton.setEnabled(getCapturePreferenceStore().getBoolean(UsageDataCaptureSettings.CAPTURE_ENABLED_KEY));
	}


	private IPreferenceStore getCapturePreferenceStore() {
	return UsageDataCaptureActivator.getDefault().getPreferenceStore();
	}


	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	@Override
	public boolean performOk() {
	getRecordingPreferences().setValue(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY, askBeforeUploadingCheckbox.getSelection());
	getRecordingPreferences().setValue(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY, Long.valueOf(uploadPeriodText.getText()) * MILLISECONDS_IN_ONE_DAY);

	return super.performOk();
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	@Override
	public boolean isValid() {
	if (!isValidUploadPeriod(uploadPeriodText.getText())) return false;
	return true;
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	@Override
	protected void performDefaults() {
	askBeforeUploadingCheckbox.setSelection(getRecordingPreferences().getDefaultBoolean(UsageDataRecordingSettings.ASK_TO_UPLOAD_KEY));
	uploadPeriodText.setText(String.valueOf(getRecordingPreferences().getDefaultLong(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) / MILLISECONDS_IN_ONE_DAY));

	updateLastUploadText();

	super.performDefaults();
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createGeneralInformationArea(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, false));

	composite.setLayout(new GridLayout());

	askBeforeUploadingCheckbox = new Button(composite, SWT.CHECK \| SWT.LEFT);
	askBeforeUploadingCheckbox.setText(Messages.UsageDataUploadingPreferencesPage_1);
	}


	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createUploadingArea(Composite parent) {
	Group group = new Group(parent, SWT.NONE);
	group.setText(Messages.UsageDataUploadingPreferencesPage_2);
	group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

	group.setLayout(new GridLayout(3, false));

	// Create the layout that will be used by all the fields.
	GridData fieldLayoutData = new GridData(SWT.FILL, SWT.CENTER, true, false);
	fieldLayoutData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();

	createUploadPeriodField(group);
	createLastUploadField(group);
	createUploadUrlField(group);
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createUploadPeriodField(Group composite) {
	Label label = new Label(composite, SWT.NONE);
	label.setText(Messages.UsageDataUploadingPreferencesPage_3);

	uploadPeriodText = new Text(composite, SWT.SINGLE \| SWT.BORDER \| SWT.RIGHT);
	uploadPeriodText.setTextLimit(2);
	GridData gridData = new GridData(SWT.FILL, SWT.CENTER, false, false);
	gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
	gridData.horizontalSpan = 1;
	GC gc = new GC(uploadPeriodText.getDisplay());
	gc.setFont(uploadPeriodText.getFont());
	gridData.widthHint = gc.stringExtent(String.valueOf(MAXIMUM_PERIOD_IN_DAYS)).x;
	gc.dispose();
	uploadPeriodText.setLayoutData(gridData);

	new Label(composite, SWT.NONE).setText(Messages.UsageDataUploadingPreferencesPage_4);

	final ControlDecoration rangeErrorDecoration = new ControlDecoration(uploadPeriodText, SWT.LEFT \| SWT.TOP);
	rangeErrorDecoration.setDescriptionText(MessageFormat.format(Messages.UsageDataUploadingPreferencesPage_5, new Object[] {MINIMUM_PERIOD_IN_DAYS, MAXIMUM_PERIOD_IN_DAYS}));
	rangeErrorDecoration.setImage(getErrorImage());
	rangeErrorDecoration.hide();

	uploadPeriodText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	String contents = uploadPeriodText.getText();
	if (isValidUploadPeriod(contents))
	rangeErrorDecoration.hide();
	else {
	rangeErrorDecoration.show();
	}
	updateApplyButton();
	getContainer().updateButtons();
	}
	});
	if (System.getProperty(UsageDataRecordingSettings.UPLOAD_PERIOD_KEY) != null) {
	addOverrideWarning(uploadPeriodText);
	}
	}

	private boolean isValidUploadPeriod(String text) {
	try {
	long value = Long.parseLong(text);
	if (value < MINIMUM_PERIOD_IN_DAYS)
	return false;
	if (value > MAXIMUM_PERIOD_IN_DAYS)
	return false;
	} catch (NumberFormatException e) {
	return false;
	}
	return true;
	}

	private Image getErrorImage() {
	return FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_ERROR).getImage();
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createLastUploadField(Group composite) {
	label = new Label(composite, SWT.NONE);
	label.setText(Messages.UsageDataUploadingPreferencesPage_6);

	lastUploadText = new Text(composite, SWT.SINGLE \| SWT.BORDER);
	lastUploadText.setEnabled(false);
	GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
	gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
	gridData.horizontalSpan = 2;
	lastUploadText.setLayoutData(gridData);
	}

	/*
	* The Upload URL is not expected to change during execution, so
	* we make not consideration for changes while the preferences
	* page is open.
	*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createUploadUrlField(Group composite) {
	label = new Label(composite, SWT.NONE);
	label.setText(Messages.UsageDataUploadingPreferencesPage_9);

	Text uploadUrlText = new Text(composite, SWT.SINGLE \| SWT.BORDER);
	uploadUrlText.setEnabled(false);
	GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
	gridData.horizontalIndent = FieldDecorationRegistry.getDefault().getMaximumDecorationWidth();
	gridData.horizontalSpan = 2;
	uploadUrlText.setLayoutData(gridData);
	uploadUrlText.setText(getSettings().getUploadUrl());
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createButtonsArea(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));

	composite.setLayout(new RowLayout());

	createUploadNowButton(composite);
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	protected IWorkbenchPage getPage() {
	return PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
	}


	protected UsageDataRecordingSettings getSettings() {
	return UsageDataRecordingActivator.getDefault().getSettings();
	}


	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void createUploadNowButton(Composite composite) {
	uploadNowButton = new Button(composite, SWT.PUSH);
	uploadNowButton.setText(Messages.UsageDataUploadingPreferencesPage_7);
	uploadNowButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	UsageDataRecordingActivator.getDefault().getUploadManager().startUpload();
	}
	});
	}

	/*
	* Note that this method expects to be run in the UI Thread.
	*/
	private void addOverrideWarning(Control control) {
	FieldDecoration decoration = FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_WARNING);
	ControlDecoration warning = new ControlDecoration(control, SWT.BOTTOM \| SWT.LEFT);
	warning.setImage(decoration.getImage());
	warning.setDescriptionText(Messages.UsageDataUploadingPreferencesPage_8);
	}

	private String getLastUploadDateAsString() {
	long time = getRecordingSettings().getLastUploadTime();
	Date date = new Date(time);
	return date.toString();
	}


	private IPreferenceStore getRecordingPreferences() {
	return UsageDataRecordingActivator.getDefault().getPreferenceStore();
	}

	private UsageDataRecordingSettings getRecordingSettings() {
	return UsageDataRecordingActivator.getDefault().getSettings();
	}
	}