org.eclipse.bpmn2.modeler.ui.property.dialogs.NamespacesEditingDialog.java Source code

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Here is the source code for org.eclipse.bpmn2.modeler.ui.property.dialogs.NamespacesEditingDialog.java

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/*******************************************************************************
 * Copyright (c) 2011, 2012 Red Hat, Inc.
 *  All rights reserved.
 * This program is 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:
 * Red Hat, Inc. - initial API and implementation
 *
 * @author Bob Brodt
 ******************************************************************************/

package org.eclipse.bpmn2.modeler.ui.property.dialogs;

import java.util.Map;

import org.eclipse.emf.common.util.URI;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * @author Bob Brodt
 *
 */
public class NamespacesEditingDialog extends InputDialog {

    Text namespaceText;
    String namespace;
    Text namespaceErrorText;
    Map<String, String> map;

    public NamespacesEditingDialog(Shell shell, String title, final Map<String, String> map, final String prefix,
            String namespace) {
        super(shell, title, Messages.NamespacesEditingDialog_Prefix, prefix, new IInputValidator() {

            @Override
            public String isValid(String newText) {
                if (newText == null || newText.isEmpty())
                    return Messages.NamespacesEditingDialog_Invalid_Empty_Prefix;
                if (newText.equals(prefix))
                    return null;
                if (map.containsKey(newText))
                    return NLS.bind(Messages.NamespacesEditingDialog_Invalid_Duplicate_Prefix, newText);
                return null;
            }
        });
        this.namespace = namespace;
        this.map = map;
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Composite composite = (Composite) super.createDialogArea(parent);
        composite.getChildren();
        if (namespace != null) {
            Label label = new Label(composite, SWT.WRAP);
            label.setText(Messages.NamespacesEditingDialog_Namespace);
            GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL
                    | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER);
            data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
            label.setLayoutData(data);
            label.setFont(parent.getFont());

            namespaceText = new Text(composite, getInputTextStyle());
            namespaceText.setText(namespace);
            namespaceText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
            namespaceText.addModifyListener(new ModifyListener() {
                public void modifyText(ModifyEvent e) {
                    validateInput();
                }
            });

            namespaceErrorText = new Text(composite, SWT.READ_ONLY | SWT.WRAP);
            namespaceErrorText
                    .setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
            namespaceErrorText
                    .setBackground(namespaceErrorText.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));

        }
        return composite;
    }

    protected void validateInput() {
        super.validateInput();
        if (namespaceText != null) {
            String msg = null;
            String ns = namespaceText.getText();
            if (ns == null || ns.isEmpty())
                msg = Messages.NamespacesEditingDialog_Invalid_Empty_Namespace;
            try {
                URI uri = URI.createURI(ns);
            } catch (Exception e) {
                msg = Messages.NamespacesEditingDialog_Invalid_Namespace_URI;
            }
            namespaceErrorText.setText(msg == null ? "" : msg); //$NON-NLS-1$
            Control button = getButton(IDialogConstants.OK_ID);
            if (button != null) {
                if (button.isEnabled())
                    button.setEnabled(msg == null);
            }
        }
    }

    @Override
    protected void buttonPressed(int buttonId) {
        if (buttonId == IDialogConstants.OK_ID) {
            namespace = namespaceText.getText();
        } else {
            namespace = null;
        }
        super.buttonPressed(buttonId);
    }

    public String getPrefix() {
        return getValue();
    }

    public String getNamespace() {
        return namespace;
    }
}