Package org.apache.felix.sigil.eclipse.ui.internal.editors.project

Source Code of org.apache.felix.sigil.eclipse.ui.internal.editors.project.NewResourceSelectionDialog

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.felix.sigil.eclipse.ui.internal.editors.project;

import org.apache.felix.sigil.common.model.osgi.IVersionedModelElement;
import org.apache.felix.sigil.common.osgi.VersionRange;
import org.apache.felix.sigil.eclipse.model.util.ModelHelper;
import org.apache.felix.sigil.eclipse.ui.util.BackgroundLoadingSelectionDialog;
import org.apache.felix.sigil.eclipse.ui.util.IValidationListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.osgi.framework.Version;

public class NewResourceSelectionDialog<E extends IVersionedModelElement> extends BackgroundLoadingSelectionDialog<E>
{

    private VersionRangeComponent pnlVersionRange;
    private boolean optionalEnabled = true;
    private Button btnOptional;

    private VersionRange selectedVersions = null;
    private boolean optional = false;

    public NewResourceSelectionDialog(Shell parentShell, String selectionLabel, boolean multi)
    {
        super(parentShell, selectionLabel, multi);
    }

    public void setOptionalEnabled(boolean enabled)
    {
        optionalEnabled = enabled;
    }

    @Override
    protected Control createDialogArea(Composite parent)
    {
        // Create controls
        Composite container = (Composite) super.createDialogArea(parent);
        Composite composite = new Composite(container, SWT.NONE);

        if (optionalEnabled)
        {
            new Label(composite, SWT.NONE); //Spacer
            btnOptional = new Button(composite, SWT.CHECK);
            btnOptional.setText("Optional");
        }

        Label lblVersionRange = new Label(composite, SWT.NONE);
        lblVersionRange.setText("Version Range:");
        Group group = new Group(composite, SWT.BORDER);

        pnlVersionRange = new VersionRangeComponent(group, SWT.NONE);

        // Initialize
        if (selectedVersions != null)
        {
            pnlVersionRange.setVersions(selectedVersions);
        }

        if (optionalEnabled)
        {
            btnOptional.setSelection(optional);
            updateButtons();
        }

        // Hookup Listeners
        pnlVersionRange.addVersionChangeListener(new VersionsChangeListener()
        {
            public void versionsChanged(VersionRange range)
            {
                selectedVersions = range;
                updateButtons();
            }
        });
        pnlVersionRange.addValidationListener(new IValidationListener()
        {
            public void validationMessage(String message, int level)
            {
                setMessage(message, level);
                updateButtons();
            }
        });

        if (optionalEnabled)
        {
            btnOptional.addSelectionListener(new SelectionAdapter()
            {
                public void widgetSelected(SelectionEvent e)
                {
                    optional = btnOptional.getSelection();
                }
            });
        }

        // Layout
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
        GridLayout layout = new GridLayout(2, false);
        layout.verticalSpacing = 10;
        layout.horizontalSpacing = 10;
        composite.setLayout(layout);

        lblVersionRange.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
        group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
        group.setLayout(new FillLayout());

        return container;
    }

    @Override
    protected void elementSelected(E selection)
    {
        if (selection != null)
        {
            Version version = selection.getVersion();
            selectedVersions = ModelHelper.getDefaultRange(version);
            pnlVersionRange.setVersions(selectedVersions);
        }
    }

    @Override
    protected synchronized boolean canComplete()
    {
        return super.canComplete() && selectedVersions != null;
    }

    public VersionRange getSelectedVersions()
    {
        return selectedVersions;
    }

    public void setVersions(VersionRange versions)
    {
        selectedVersions = versions;
        if (pnlVersionRange != null && !pnlVersionRange.isDisposed())
        {
            pnlVersionRange.setVersions(versions);
            updateButtons();
        }
    }

    public boolean isOptional()
    {
        return optional;
    }

    public void setOptional(boolean optional)
    {
        this.optional = optional;
    }
}
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