update/org.eclipse.update.ui/src/org/eclipse/update/internal/ui/preferences/MainPreferencePage.java - platform/eclipse.platform - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.ui.preferences;

 import java.net.*;

 import org.eclipse.core.runtime.*;
 import org.eclipse.jface.dialogs.*;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.events.*;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.ui.*;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.update.core.SiteManager;
 import org.eclipse.update.internal.core.UpdateCore;
 import org.eclipse.update.internal.operations.UpdateUtils;
 import org.eclipse.update.internal.ui.UpdateUI;

 /**
  * Insert the type's description here.
  * @see PreferencePage
  */
 public class MainPreferencePage
 	extends PreferencePage
 	implements IWorkbenchPreferencePage {

 	//private Label historySizeLabel;
 	private Text historySizeText;
 	private Button checkSignatureCheckbox;
 	private Button equivalentButton;
 	private Button compatibleButton;
 	private Text updatePolicyText;
 	private Label httpProxyHostLabel;
 	private Label httpProxyPortLabel;
 	private Text httpProxyHostText;
 	private Text httpProxyPortText;
 	private Button enableHttpProxy;

 	// these two values are for compatibility with old code
 	public static final String EQUIVALENT_VALUE = "equivalent"; //$NON-NLS-1$
 	public static final String COMPATIBLE_VALUE = "compatible"; //$NON-NLS-1$

 	/**
 	 * The constructor.
 	 */
 	public MainPreferencePage() {
 		super();
 	}

 	/**
 	 * Insert the method's description here.
 	 */
 	public void init(IWorkbench workbench) {
 	}

 	/* (non-Javadoc)
 	 * Method declared on PreferencePage.
 	 */
 	protected Control createContents(Composite parent) {
 		WorkbenchHelp.setHelp(parent, "org.eclipse.update.ui.MainPreferencePage"); //$NON-NLS-1$

 		Composite mainComposite = new Composite(parent, SWT.NULL);
 		mainComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		layout.numColumns = 2;
 		mainComposite.setLayout(layout);

 		Label historySizeLabel = new Label(mainComposite, SWT.NONE);
 		historySizeLabel.setText(UpdateUI.getString("MainPreferencePage.historySize")); //$NON-NLS-1$
 		historySizeText = new Text(mainComposite, SWT.SINGLE | SWT.BORDER);
 		historySizeText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		checkSignatureCheckbox =
 			new Button(mainComposite, SWT.CHECK | SWT.LEFT);
 		checkSignatureCheckbox.setText(UpdateUI.getString("MainPreferencePage.checkSignature")); //$NON-NLS-1$
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 2;
 		checkSignatureCheckbox.setLayoutData(gd);
 		checkSignatureCheckbox.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				if (checkSignatureCheckbox.getSelection() == false) {
 					warnSignatureCheck(getShell());
 				}
 			}
 		});

 		createSpacer(mainComposite, 2);

 		Group group = new Group(mainComposite, SWT.NONE);
 		group.setText(UpdateUI.getString("MainPreferencePage.updateVersions")); //$NON-NLS-1$
 		group.setLayout(new GridLayout());
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 2;
 		group.setLayoutData(gd);

 		equivalentButton = new Button(group, SWT.RADIO);
 		equivalentButton.setText(UpdateUI.getString("MainPreferencePage.updateVersions.equivalent")); //$NON-NLS-1$

 		compatibleButton = new Button(group, SWT.RADIO);
 		compatibleButton.setText(UpdateUI.getString("MainPreferencePage.updateVersions.compatible")); //$NON-NLS-1$

 		createSpacer(mainComposite, 2);

 		group = new Group(mainComposite, SWT.NONE);
 		group.setText(UpdateUI.getString("MainPreferencePage.updatePolicy")); //$NON-NLS-1$
 		layout = new GridLayout();
 		layout.numColumns = 2;
 		group.setLayout(layout);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 2;
 		group.setLayoutData(gd);

 		Label label = new Label(group, SWT.NULL);
 		label.setText(UpdateUI.getString("MainPreferencePage.updatePolicyURL")); //$NON-NLS-1$
 		updatePolicyText = new Text(group, SWT.SINGLE | SWT.BORDER);

 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		updatePolicyText.setLayoutData(gd);

 		createSpacer(mainComposite, 2);
 		createHttpProxy(mainComposite, 2);
 		initialize();
 		updatePolicyText.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				textChanged();
 			}
 		});
 		return mainComposite;
 	}

 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		Dialog.applyDialogFont(getControl());
 	}

 	protected void createSpacer(Composite composite, int columnSpan) {
 		Label label = new Label(composite, SWT.NONE);
 		GridData gd = new GridData();
 		gd.horizontalSpan = columnSpan;
 		label.setLayoutData(gd);
 	}

 	protected void createHttpProxy(Composite composite, int columnSpan) {
 		Group group = new Group(composite, SWT.NONE);
 		group.setText(UpdateUI.getString("MainPreferencePage.proxyGroup")); //$NON-NLS-1$
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		group.setLayout(layout);
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = columnSpan;
 		group.setLayoutData(gd);

 		enableHttpProxy = new Button(group, SWT.CHECK);
 		enableHttpProxy.setText(UpdateUI.getString("MainPreferencePage.enableHttpProxy")); //$NON-NLS-1$
 		gd = new GridData();
 		gd.horizontalSpan = 2;
 		enableHttpProxy.setLayoutData(gd);

 		httpProxyHostLabel = new Label(group, SWT.NONE);
 		httpProxyHostLabel.setText(UpdateUI.getString("MainPreferencePage.httpProxyHost")); //$NON-NLS-1$

 		httpProxyHostText = new Text(group, SWT.SINGLE | SWT.BORDER);
 		httpProxyHostText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		httpProxyPortLabel = new Label(group, SWT.NONE);
 		httpProxyPortLabel.setText(UpdateUI.getString("MainPreferencePage.httpProxyPort")); //$NON-NLS-1$

 		httpProxyPortText = new Text(group, SWT.SINGLE | SWT.BORDER);
 		httpProxyPortText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		enableHttpProxy.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				boolean enable = enableHttpProxy.getSelection();
 				httpProxyPortLabel.setEnabled(enable);
 				httpProxyHostLabel.setEnabled(enable);
 				httpProxyPortText.setEnabled(enable);
 				httpProxyHostText.setEnabled(enable);
 			}
 		});

 	}

 	private int getHistoryCount() {
 		try {
 			Integer count = new Integer(historySizeText.getText());
 			return count.intValue();
 		} catch (NumberFormatException e) {
 		}
 		return UpdateCore.getPlugin().getPluginPreferences().getDefaultInt(
 			UpdateCore.P_HISTORY_SIZE);
 	}

 	public boolean performOk() {
 		BusyIndicator.showWhile(getControl().getDisplay(), new Runnable() {
 			public void run() {
 				try {
 					SiteManager.getLocalSite().setMaximumHistoryCount(
 						getHistoryCount());
 					SiteManager.setHttpProxyInfo(
 						enableHttpProxy.getSelection(),
 						httpProxyHostText.getText(),
 						httpProxyPortText.getText());
 				} catch (CoreException e) {
 					UpdateUI.logException(e);
 				}
 			}
 		});

 		Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
 		prefs.setValue(
 			UpdateCore.P_CHECK_SIGNATURE,
 			checkSignatureCheckbox.getSelection());
 		prefs.setValue(UpdateCore.P_HISTORY_SIZE, historySizeText.getText());
 		prefs.setValue(
 			UpdateCore.P_UPDATE_VERSIONS,
 			equivalentButton.getSelection()
 				? EQUIVALENT_VALUE
 				: COMPATIBLE_VALUE);
 		prefs.setValue(
 			UpdateUtils.P_UPDATE_POLICY_URL,
 			updatePolicyText.getText());

 		UpdateCore.getPlugin().savePluginPreferences();
 		return super.performOk();
 	}

 	public void performApply() {
 		super.performApply();
 		BusyIndicator.showWhile(getControl().getDisplay(), new Runnable() {
 			public void run() {
 				SiteManager.setHttpProxyInfo(
 					enableHttpProxy.getSelection(),
 					httpProxyHostText.getText(),
 					httpProxyPortText.getText());
 			}
 		});

 		Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
 		prefs.setValue(
 			UpdateCore.P_CHECK_SIGNATURE,
 			checkSignatureCheckbox.getSelection());
 		prefs.setValue(UpdateCore.P_HISTORY_SIZE, historySizeText.getText());
 		prefs.setValue(
 			UpdateCore.P_UPDATE_VERSIONS,
 			equivalentButton.getSelection()
 				? EQUIVALENT_VALUE
 				: COMPATIBLE_VALUE);
 		prefs.setValue(
 			UpdateUtils.P_UPDATE_POLICY_URL,
 			updatePolicyText.getText());

 		UpdateCore.getPlugin().savePluginPreferences();
 	}

 	private void initialize() {
 		enableHttpProxy.setSelection(SiteManager.isHttpProxyEnable());
 		String serverValue = SiteManager.getHttpProxyServer();
 		if (serverValue != null)
 			httpProxyHostText.setText(serverValue);
 		String portValue = SiteManager.getHttpProxyPort();
 		if (portValue != null)
 			httpProxyPortText.setText(portValue);

 		httpProxyPortLabel.setEnabled(enableHttpProxy.getSelection());
 		httpProxyHostLabel.setEnabled(enableHttpProxy.getSelection());
 		httpProxyPortText.setEnabled(enableHttpProxy.getSelection());
 		httpProxyHostText.setEnabled(enableHttpProxy.getSelection());

 		Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
 		checkSignatureCheckbox.setSelection(
 			prefs.getBoolean(UpdateCore.P_CHECK_SIGNATURE));

 		historySizeText.setText(prefs.getString(UpdateCore.P_HISTORY_SIZE));

 		boolean isCompatible =
 			UpdateCore.COMPATIBLE_VALUE.equals(
 				prefs.getString(UpdateCore.P_UPDATE_VERSIONS));
 		equivalentButton.setSelection(!isCompatible);
 		compatibleButton.setSelection(isCompatible);

 		String text = prefs.getString(UpdateUtils.P_UPDATE_POLICY_URL);
 		updatePolicyText.setText(text);
 	}

 	private void textChanged() {
 		String text = updatePolicyText.getText();
 		if (text.length() > 0) {
 			try {
 				new URL(text);
 			} catch (MalformedURLException e) {
 				setValid(false);
 				setErrorMessage(UpdateUI.getString("UpdateSettingsPreferencePage.invalid")); //$NON-NLS-1$
 				return;
 			}
 		}
 		setValid(true);
 		setErrorMessage(null);
 	}

 	public void performDefaults() {
 		super.performDefaults();
 		Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();

 		enableHttpProxy.setSelection(false);
 		httpProxyHostText.setText(""); //$NON-NLS-1$
 		httpProxyPortText.setText(""); //$NON-NLS-1$
 		httpProxyPortLabel.setEnabled(false);
 		httpProxyHostLabel.setEnabled(false);
 		httpProxyPortText.setEnabled(false);
 		httpProxyHostText.setEnabled(false);

 		updatePolicyText.setText(""); //$NON-NLS-1$

 		checkSignatureCheckbox.setSelection(true);
 		historySizeText.setText(
 			prefs.getDefaultString(UpdateCore.P_HISTORY_SIZE));
 		equivalentButton.setSelection(true);
 		compatibleButton.setSelection(false);
 	}

 	private void warnSignatureCheck(Shell shell) {
 		MessageDialog.openWarning(shell, UpdateUI.getString("MainPreferencePage.digitalSignature.title"), //$NON-NLS-1$
 		UpdateUI.getString("MainPreferencePage.digitalSignature.message")); //$NON-NLS-1$
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.update.internal.ui.preferences;

	import java.net.*;

	import org.eclipse.core.runtime.*;
	import org.eclipse.jface.dialogs.*;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.events.*;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.ui.*;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.update.core.SiteManager;
	import org.eclipse.update.internal.core.UpdateCore;
	import org.eclipse.update.internal.operations.UpdateUtils;
	import org.eclipse.update.internal.ui.UpdateUI;

	/**
	* Insert the type's description here.
	* @see PreferencePage
	*/
	public class MainPreferencePage
	extends PreferencePage
	implements IWorkbenchPreferencePage {

	//private Label historySizeLabel;
	private Text historySizeText;
	private Button checkSignatureCheckbox;
	private Button equivalentButton;
	private Button compatibleButton;
	private Text updatePolicyText;
	private Label httpProxyHostLabel;
	private Label httpProxyPortLabel;
	private Text httpProxyHostText;
	private Text httpProxyPortText;
	private Button enableHttpProxy;

	// these two values are for compatibility with old code
	public static final String EQUIVALENT_VALUE = "equivalent"; //$NON-NLS-1$
	public static final String COMPATIBLE_VALUE = "compatible"; //$NON-NLS-1$

	/**
	* The constructor.
	*/
	public MainPreferencePage() {
	super();
	}

	/**
	* Insert the method's description here.
	*/
	public void init(IWorkbench workbench) {
	}

	/* (non-Javadoc)
	* Method declared on PreferencePage.
	*/
	protected Control createContents(Composite parent) {
	WorkbenchHelp.setHelp(parent, "org.eclipse.update.ui.MainPreferencePage"); //$NON-NLS-1$

	Composite mainComposite = new Composite(parent, SWT.NULL);
	mainComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	layout.numColumns = 2;
	mainComposite.setLayout(layout);

	Label historySizeLabel = new Label(mainComposite, SWT.NONE);
	historySizeLabel.setText(UpdateUI.getString("MainPreferencePage.historySize")); //$NON-NLS-1$
	historySizeText = new Text(mainComposite, SWT.SINGLE \| SWT.BORDER);
	historySizeText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	checkSignatureCheckbox =
	new Button(mainComposite, SWT.CHECK \| SWT.LEFT);
	checkSignatureCheckbox.setText(UpdateUI.getString("MainPreferencePage.checkSignature")); //$NON-NLS-1$
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 2;
	checkSignatureCheckbox.setLayoutData(gd);
	checkSignatureCheckbox.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if (checkSignatureCheckbox.getSelection() == false) {
	warnSignatureCheck(getShell());
	}
	}
	});

	createSpacer(mainComposite, 2);

	Group group = new Group(mainComposite, SWT.NONE);
	group.setText(UpdateUI.getString("MainPreferencePage.updateVersions")); //$NON-NLS-1$
	group.setLayout(new GridLayout());
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 2;
	group.setLayoutData(gd);

	equivalentButton = new Button(group, SWT.RADIO);
	equivalentButton.setText(UpdateUI.getString("MainPreferencePage.updateVersions.equivalent")); //$NON-NLS-1$

	compatibleButton = new Button(group, SWT.RADIO);
	compatibleButton.setText(UpdateUI.getString("MainPreferencePage.updateVersions.compatible")); //$NON-NLS-1$

	createSpacer(mainComposite, 2);

	group = new Group(mainComposite, SWT.NONE);
	group.setText(UpdateUI.getString("MainPreferencePage.updatePolicy")); //$NON-NLS-1$
	layout = new GridLayout();
	layout.numColumns = 2;
	group.setLayout(layout);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 2;
	group.setLayoutData(gd);

	Label label = new Label(group, SWT.NULL);
	label.setText(UpdateUI.getString("MainPreferencePage.updatePolicyURL")); //$NON-NLS-1$
	updatePolicyText = new Text(group, SWT.SINGLE \| SWT.BORDER);

	gd = new GridData(GridData.FILL_HORIZONTAL);
	updatePolicyText.setLayoutData(gd);

	createSpacer(mainComposite, 2);
	createHttpProxy(mainComposite, 2);
	initialize();
	updatePolicyText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	textChanged();
	}
	});
	return mainComposite;
	}

	public void createControl(Composite parent) {
	super.createControl(parent);
	Dialog.applyDialogFont(getControl());
	}

	protected void createSpacer(Composite composite, int columnSpan) {
	Label label = new Label(composite, SWT.NONE);
	GridData gd = new GridData();
	gd.horizontalSpan = columnSpan;
	label.setLayoutData(gd);
	}

	protected void createHttpProxy(Composite composite, int columnSpan) {
	Group group = new Group(composite, SWT.NONE);
	group.setText(UpdateUI.getString("MainPreferencePage.proxyGroup")); //$NON-NLS-1$
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	group.setLayout(layout);
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = columnSpan;
	group.setLayoutData(gd);

	enableHttpProxy = new Button(group, SWT.CHECK);
	enableHttpProxy.setText(UpdateUI.getString("MainPreferencePage.enableHttpProxy")); //$NON-NLS-1$
	gd = new GridData();
	gd.horizontalSpan = 2;
	enableHttpProxy.setLayoutData(gd);

	httpProxyHostLabel = new Label(group, SWT.NONE);
	httpProxyHostLabel.setText(UpdateUI.getString("MainPreferencePage.httpProxyHost")); //$NON-NLS-1$

	httpProxyHostText = new Text(group, SWT.SINGLE \| SWT.BORDER);
	httpProxyHostText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	httpProxyPortLabel = new Label(group, SWT.NONE);
	httpProxyPortLabel.setText(UpdateUI.getString("MainPreferencePage.httpProxyPort")); //$NON-NLS-1$

	httpProxyPortText = new Text(group, SWT.SINGLE \| SWT.BORDER);
	httpProxyPortText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	enableHttpProxy.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	boolean enable = enableHttpProxy.getSelection();
	httpProxyPortLabel.setEnabled(enable);
	httpProxyHostLabel.setEnabled(enable);
	httpProxyPortText.setEnabled(enable);
	httpProxyHostText.setEnabled(enable);
	}
	});

	}

	private int getHistoryCount() {
	try {
	Integer count = new Integer(historySizeText.getText());
	return count.intValue();
	} catch (NumberFormatException e) {
	}
	return UpdateCore.getPlugin().getPluginPreferences().getDefaultInt(
	UpdateCore.P_HISTORY_SIZE);
	}

	public boolean performOk() {
	BusyIndicator.showWhile(getControl().getDisplay(), new Runnable() {
	public void run() {
	try {
	SiteManager.getLocalSite().setMaximumHistoryCount(
	getHistoryCount());
	SiteManager.setHttpProxyInfo(
	enableHttpProxy.getSelection(),
	httpProxyHostText.getText(),
	httpProxyPortText.getText());
	} catch (CoreException e) {
	UpdateUI.logException(e);
	}
	}
	});

	Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
	prefs.setValue(
	UpdateCore.P_CHECK_SIGNATURE,
	checkSignatureCheckbox.getSelection());
	prefs.setValue(UpdateCore.P_HISTORY_SIZE, historySizeText.getText());
	prefs.setValue(
	UpdateCore.P_UPDATE_VERSIONS,
	equivalentButton.getSelection()
	? EQUIVALENT_VALUE
	: COMPATIBLE_VALUE);
	prefs.setValue(
	UpdateUtils.P_UPDATE_POLICY_URL,
	updatePolicyText.getText());

	UpdateCore.getPlugin().savePluginPreferences();
	return super.performOk();
	}

	public void performApply() {
	super.performApply();
	BusyIndicator.showWhile(getControl().getDisplay(), new Runnable() {
	public void run() {
	SiteManager.setHttpProxyInfo(
	enableHttpProxy.getSelection(),
	httpProxyHostText.getText(),
	httpProxyPortText.getText());
	}
	});

	Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
	prefs.setValue(
	UpdateCore.P_CHECK_SIGNATURE,
	checkSignatureCheckbox.getSelection());
	prefs.setValue(UpdateCore.P_HISTORY_SIZE, historySizeText.getText());
	prefs.setValue(
	UpdateCore.P_UPDATE_VERSIONS,
	equivalentButton.getSelection()
	? EQUIVALENT_VALUE
	: COMPATIBLE_VALUE);
	prefs.setValue(
	UpdateUtils.P_UPDATE_POLICY_URL,
	updatePolicyText.getText());

	UpdateCore.getPlugin().savePluginPreferences();
	}

	private void initialize() {
	enableHttpProxy.setSelection(SiteManager.isHttpProxyEnable());
	String serverValue = SiteManager.getHttpProxyServer();
	if (serverValue != null)
	httpProxyHostText.setText(serverValue);
	String portValue = SiteManager.getHttpProxyPort();
	if (portValue != null)
	httpProxyPortText.setText(portValue);

	httpProxyPortLabel.setEnabled(enableHttpProxy.getSelection());
	httpProxyHostLabel.setEnabled(enableHttpProxy.getSelection());
	httpProxyPortText.setEnabled(enableHttpProxy.getSelection());
	httpProxyHostText.setEnabled(enableHttpProxy.getSelection());

	Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();
	checkSignatureCheckbox.setSelection(
	prefs.getBoolean(UpdateCore.P_CHECK_SIGNATURE));

	historySizeText.setText(prefs.getString(UpdateCore.P_HISTORY_SIZE));

	boolean isCompatible =
	UpdateCore.COMPATIBLE_VALUE.equals(
	prefs.getString(UpdateCore.P_UPDATE_VERSIONS));
	equivalentButton.setSelection(!isCompatible);
	compatibleButton.setSelection(isCompatible);

	String text = prefs.getString(UpdateUtils.P_UPDATE_POLICY_URL);
	updatePolicyText.setText(text);
	}

	private void textChanged() {
	String text = updatePolicyText.getText();
	if (text.length() > 0) {
	try {
	new URL(text);
	} catch (MalformedURLException e) {
	setValid(false);
	setErrorMessage(UpdateUI.getString("UpdateSettingsPreferencePage.invalid")); //$NON-NLS-1$
	return;
	}
	}
	setValid(true);
	setErrorMessage(null);
	}

	public void performDefaults() {
	super.performDefaults();
	Preferences prefs = UpdateCore.getPlugin().getPluginPreferences();

	enableHttpProxy.setSelection(false);
	httpProxyHostText.setText(""); //$NON-NLS-1$
	httpProxyPortText.setText(""); //$NON-NLS-1$
	httpProxyPortLabel.setEnabled(false);
	httpProxyHostLabel.setEnabled(false);
	httpProxyPortText.setEnabled(false);
	httpProxyHostText.setEnabled(false);

	updatePolicyText.setText(""); //$NON-NLS-1$

	checkSignatureCheckbox.setSelection(true);
	historySizeText.setText(
	prefs.getDefaultString(UpdateCore.P_HISTORY_SIZE));
	equivalentButton.setSelection(true);
	compatibleButton.setSelection(false);
	}

	private void warnSignatureCheck(Shell shell) {
	MessageDialog.openWarning(shell, UpdateUI.getString("MainPreferencePage.digitalSignature.title"), //$NON-NLS-1$
	UpdateUI.getString("MainPreferencePage.digitalSignature.message")); //$NON-NLS-1$
	}
	}