org.eclipse.wst.server.ui.internal.wizard.page.HostnameComposite.java Source code

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Here is the source code for org.eclipse.wst.server.ui.internal.wizard.page.HostnameComposite.java

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/*******************************************************************************
 * Copyright (c) 2003, 2009 IBM Corporation 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:
 *     IBM Corporation - Initial API and implementation
 *******************************************************************************/
package org.eclipse.wst.server.ui.internal.wizard.page;

import java.util.List;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.fieldassist.AutoCompleteField;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.TextContentAdapter;

import org.eclipse.wst.server.ui.internal.Messages;
import org.eclipse.wst.server.ui.internal.SWTUtil;
import org.eclipse.wst.server.ui.internal.ServerUIPlugin;

import org.eclipse.swt.SWT;
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.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.Text;

/**
 * A composite used to select a hostname.
 */
public class HostnameComposite extends Composite {
    public static final String LOCALHOST = "localhost";
    protected String host;
    protected IHostnameSelectionListener listener;

    protected Text hostname;

    public interface IHostnameSelectionListener {
        public void hostnameSelected(String host);
    }

    /**
     * Create a new HostnameComposite.
     * 
     * @param parent a parent composite
     * @param listener2 a hostname selection listener
     */
    public HostnameComposite(Composite parent, IHostnameSelectionListener listener2) {
        super(parent, SWT.NONE);
        this.listener = listener2;

        createControl();
    }

    /**
     * Creates the UI of the page.
     */
    protected void createControl() {
        GridLayout layout = new GridLayout();
        layout.horizontalSpacing = SWTUtil.convertHorizontalDLUsToPixels(this, 4);
        layout.verticalSpacing = SWTUtil.convertVerticalDLUsToPixels(this, 4);
        layout.marginWidth = 0;
        layout.marginHeight = 0;
        layout.numColumns = 3;
        setLayout(layout);
        //WorkbenchHelp.setHelp(this, ContextIds.SELECT_CLIENT_WIZARD);

        Label label = new Label(this, SWT.WRAP);
        label.setText(Messages.hostname);
        label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

        hostname = new Text(this, SWT.BORDER);
        hostname.setText(LOCALHOST);
        final ControlDecoration hostnameDecoration = new ControlDecoration(hostname, SWT.TOP | SWT.LEAD);
        GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
        data.horizontalSpan = 2;
        hostname.setLayoutData(data);

        hostname.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                hostnameChanged(hostname.getText());
            }
        });

        FieldDecorationRegistry registry = FieldDecorationRegistry.getDefault();
        FieldDecoration fd = registry.getFieldDecoration(FieldDecorationRegistry.DEC_CONTENT_PROPOSAL);
        hostnameDecoration.setImage(fd.getImage());
        hostnameDecoration.setDescriptionText(fd.getDescription());

        hostname.addFocusListener(new FocusListener() {
            public void focusGained(FocusEvent e) {
                hostnameDecoration.show();
            }

            public void focusLost(FocusEvent e) {
                hostnameDecoration.hide();
            }
        });

        List<String> hosts = ServerUIPlugin.getPreferences().getHostnames();
        String[] hosts2 = hosts.toArray(new String[hosts.size()]);
        new AutoCompleteField(hostname, new TextContentAdapter(), hosts2);

        Dialog.applyDialogFont(this);
    }

    protected void hostnameChanged(String newHost) {
        if (newHost == null)
            return;

        if (newHost.equals(host))
            return;

        host = newHost;
        listener.hostnameSelected(host);
    }

    public String getHostname() {
        return host;
    }

    public void setHostname(String newHostname) {
        hostname.setText(newHostname);
    }
}