gov.redhawk.ui.views.domainbrowser.view.DomainEntryWizardPage.java Source code

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Here is the source code for gov.redhawk.ui.views.domainbrowser.view.DomainEntryWizardPage.java

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/** 
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * 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.
 *
 */
package gov.redhawk.ui.views.domainbrowser.view;

import gov.redhawk.sca.ui.preferences.DomainSettingModel;

import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
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;

/**
 * @since 7.0
 * 
 */
public class DomainEntryWizardPage extends WizardPage {

    private Text domainNameField;
    private Text nameServiceField;
    private final String[] errors;
    private final DataBindingContext context = new DataBindingContext();
    private final DomainSettingModel model = new DomainSettingModel();

    /**
     * Instantiates a host entry dialog.
     * 
     * @param parentShell the parent shell
     * @since 4.0
     */
    public DomainEntryWizardPage(final String pageName) {
        super(pageName, "Domain Manager Connection Settings", null);
        this.setDescription("Enter the settings for the Domain Manager.");
        this.errors = new String[2];
    }

    @Override
    public void dispose() {
        super.dispose();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void createControl(final Composite parent) {
        final Composite container = new Composite(parent, SWT.NONE);
        final GridLayout gridLayout = new GridLayout(2, false);
        container.setLayout(gridLayout);
        container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

        final Label domainNameLabel = new Label(container, SWT.NONE);
        domainNameLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false));
        domainNameLabel.setText("Domain Name:");

        this.domainNameField = new Text(container, SWT.BORDER);
        domainNameField.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false, 1, 1));
        UpdateValueStrategy validator = new UpdateValueStrategy();

        // Add the domainName validator, needs to reference the initref
        validator.setAfterConvertValidator(new IValidator() {

            @Override
            public IStatus validate(final Object value) {
                try {
                    final String name = (String) value;
                    if ((name == null) || (name.length() == 0)) {
                        DomainEntryWizardPage.this.errors[0] = "Must enter a domain name.";
                        return ValidationStatus.error(DomainEntryWizardPage.this.errors[0]);
                    }

                    DomainEntryWizardPage.this.errors[0] = null;
                    return ValidationStatus.ok();
                } finally {
                    DomainEntryWizardPage.this.updateMessage();
                }
            }
        });

        final Binding nameBinding = this.context.bindValue(SWTObservables.observeText(domainNameField, SWT.Modify),
                BeansObservables.observeValue(this.model, DomainSettingModel.PROP_DOMAIN_NAME), validator, null);

        final Label nameServiceLabel = new Label(container, SWT.NONE);
        nameServiceLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false));
        nameServiceLabel.setText("Name Service Initial Reference:");

        this.nameServiceField = new Text(container, SWT.BORDER);
        nameServiceField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

        // Add the InitRef validator
        validator = new UpdateValueStrategy();
        validator.setAfterConvertValidator(new IValidator() {

            @Override
            public IStatus validate(final Object value) {
                try {
                    final String newValue = (String) value;
                    if (newValue == null || newValue.length() == 0) {
                        DomainEntryWizardPage.this.errors[1] = "Must enter a Name Service Initial Reference.";
                        return ValidationStatus.error(DomainEntryWizardPage.this.errors[1]);
                    }
                    DomainEntryWizardPage.this.errors[1] = null;
                    return ValidationStatus.ok();

                } finally {
                    DomainEntryWizardPage.this.updateMessage();
                }
            }
        });

        this.context.bindValue(SWTObservables.observeText(nameServiceField, SWT.Modify),
                BeansObservables.observeValue(this.model, DomainSettingModel.PROP_NAME_SERVICE_INIT_REF), validator,
                null);

        setControl(container);
    }

    public String getNameServiceInitRef() {
        return this.model.getNameServiceInitRef();
    }

    public String getDomainName() {
        return this.model.getDomainName();
    }

    /**
     * This updates the page's error message and completion status. It is used
     * to validate two fields at the same time since editing the initRef could
     * make two domain names being the same a valid scenario (the original one
     * is removed).
     * @since 8.0
     */
    protected void updateMessage() {
        final boolean error = (this.errors[0] != null) || (this.errors[1] != null);
        if (error) {
            setErrorMessage((this.errors[0] != null) ? this.errors[0] : this.errors[1]); // SUPPRESS CHECKSTYLE AvoidInline
        } else {
            setErrorMessage(null);
        }
        setPageComplete(!error);
    }

}