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

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

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/*******************************************************************************
 * Copyright (c) 2003, 2007 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 org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.wst.server.core.TaskModel;
import org.eclipse.wst.server.core.internal.IClient;
import org.eclipse.wst.server.ui.ServerUICore;
import org.eclipse.wst.server.ui.internal.*;
import org.eclipse.wst.server.ui.internal.wizard.WizardTaskUtil;
import org.eclipse.wst.server.ui.wizard.IWizardHandle;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
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.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.help.IWorkbenchHelpSystem;

/**
 * A wizard page used to select a server client.
 */
public class SelectClientComposite extends Composite {
    protected IWizardHandle wizard;
    protected TaskModel taskModel;

    // the list of elements to select from
    protected IClient[] clients;

    // the currently selected element
    protected IClient selectedClient;

    // the table containing the elements
    protected Table elementTable;

    // the description of the selected client
    protected Label description;

    /**
     * Create a new SelectClientComposite.
     * 
     * @param parent a parent composite
     * @param wizard a wizard handle
     * @param taskModel a task model
     */
    public SelectClientComposite(Composite parent, IWizardHandle wizard, TaskModel taskModel) {
        super(parent, SWT.NONE);
        this.wizard = wizard;
        this.taskModel = taskModel;
        try {
            clients = (IClient[]) taskModel.getObject(WizardTaskUtil.TASK_CLIENTS);
        } catch (Exception e) {
            // ignore
        }

        wizard.setTitle(Messages.wizSelectClientTitle);
        wizard.setDescription(Messages.wizSelectClientDescription);
        wizard.setImageDescriptor(ImageResource.getImageDescriptor(ImageResource.IMG_WIZBAN_SELECT_SERVER_CLIENT));

        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);
        setLayout(layout);

        IWorkbenchHelpSystem whs = PlatformUI.getWorkbench().getHelpSystem();
        whs.setHelp(this, ContextIds.SELECT_CLIENT_WIZARD);

        Label label = new Label(this, SWT.WRAP);
        label.setText(Messages.wizSelectClientMessage);
        GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING);
        label.setLayoutData(data);

        elementTable = new Table(this, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
        data = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
        data.heightHint = 80;
        data.horizontalIndent = 20;
        elementTable.setLayoutData(data);
        elementTable.addSelectionListener(new SelectionListener() {
            public void widgetSelected(SelectionEvent e) {
                handleSelection();
            }

            public void widgetDefaultSelected(SelectionEvent e) {
                handleSelection();
                //TODO: WizardUtil.defaultSelect(getWizard(), SelectClientWizardPage.this);
            }
        });
        whs.setHelp(elementTable, ContextIds.SELECT_CLIENT);

        if (clients != null) {
            ILabelProvider labelProvider = ServerUICore.getLabelProvider();
            int size = clients.length;
            for (int i = 0; i < size; i++) {
                TableItem item = new TableItem(elementTable, SWT.NONE);
                item.setText(0, labelProvider.getText(clients[i]));
                item.setImage(0, labelProvider.getImage(clients[i]));
                item.setData(clients[i]);
            }
            labelProvider.dispose();
        }

        description = new Label(this, SWT.WRAP);
        description.setText("");
        data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING);
        data.heightHint = 70;
        description.setLayoutData(data);

        Dialog.applyDialogFont(this);
    }

    /**
     * Handle the selection of a client.
     */
    protected void handleSelection() {
        int index = elementTable.getSelectionIndex();
        if (index < 0)
            selectedClient = null;
        else
            selectedClient = clients[index];

        taskModel.putObject(WizardTaskUtil.TASK_CLIENT, selectedClient);
        if (selectedClient != null)
            wizard.setMessage(null, IMessageProvider.NONE);
        else
            wizard.setMessage("", IMessageProvider.ERROR);

        String desc = null;
        if (selectedClient != null)
            desc = selectedClient.getDescription();
        if (desc == null)
            desc = "";
        description.setText(desc);

        wizard.update();
    }
}