    001/*****************************************************************************
    002 * Copyright by The HDF Group.                                               *
    003 * Copyright by the Board of Trustees of the University of Illinois.         *
    004 * All rights reserved.                                                      *
    005 *                                                                           *
    006 * This file is part of the HDF Java Products distribution.                  *
    007 * The full copyright notice, including terms governing use, modification,   *
    008 * and redistribution, is contained in the files COPYING and Copyright.html. *
    009 * COPYING can be found at the root of the source code distribution tree.    *
    010 * Or, see https://support.hdfgroup.org/products/licenses.html               *
    011 * If you do not have access to either file, you may request a copy from     *
    012 * help@hdfgroup.org.                                                        *
    013 ****************************************************************************/
    014
    015package hdf.view.dialog;
    016
    017import java.util.Iterator;
    018import java.util.List;
    019import java.util.Vector;
    020
    021import org.eclipse.swt.SWT;
    022import org.eclipse.swt.events.DisposeEvent;
    023import org.eclipse.swt.events.DisposeListener;
    024import org.eclipse.swt.events.SelectionAdapter;
    025import org.eclipse.swt.events.SelectionEvent;
    026import org.eclipse.swt.events.TraverseEvent;
    027import org.eclipse.swt.events.TraverseListener;
    028import org.eclipse.swt.graphics.Point;
    029import org.eclipse.swt.graphics.Rectangle;
    030import org.eclipse.swt.layout.GridData;
    031import org.eclipse.swt.layout.GridLayout;
    032import org.eclipse.swt.widgets.Button;
    033import org.eclipse.swt.widgets.Combo;
    034import org.eclipse.swt.widgets.Composite;
    035import org.eclipse.swt.widgets.Display;
    036import org.eclipse.swt.widgets.Label;
    037import org.eclipse.swt.widgets.Shell;
    038import org.eclipse.swt.widgets.Text;
    039
    040import hdf.object.Datatype;
    041import hdf.object.Group;
    042import hdf.object.HObject;
    043import hdf.view.Tools;
    044import hdf.view.ViewProperties;
    045
    046/**
    047 * NewDatatypeDialog shows a message dialog requesting user input for creating a
    048 * new HDF5 datatype.
    049 *
    050 * @author Jordan T. Henderson
    051 * @version 2.4 1/1/2016
    052 */
    053public class NewDatatypeDialog extends NewDataObjectDialog {
    054
    055    private Combo             parentChoice;
    056
    057    /** TextField for entering the name of the object */
    058    protected Text            nameField;
    059
    060    /** a list of current groups */
    061    private List<Group>       groupList;
    062
    063    /**
    064     * Constructs a NewDatatypeDialog with specified list of possible parent
    065     * groups.
    066     *
    067     * @param parent
    068     *            the parent shell of the dialog
    069     * @param pGroup
    070     *            the parent group which the new group is added to.
    071     * @param objs
    072     *            the list of all objects.
    073     */
    074    public NewDatatypeDialog(Shell parent, Group pGroup, List<?> objs) {
    075        super(parent, pGroup, objs);
    076    }
    077
    078    public void open() {
    079        Shell parent = getParent();
    080        shell = new Shell(parent, SWT.SHELL_TRIM | SWT.APPLICATION_MODAL);
    081        shell.setFont(curFont);
    082        shell.setText("New Datatype...");
    083        shell.setImage(ViewProperties.getHdfIcon());
    084        shell.setLayout(new GridLayout(1, false));
    085
    086
    087        // Create Datatype name / Parent group region
    088        Composite fieldComposite = new Composite(shell, SWT.NONE);
    089        fieldComposite.setLayout(new GridLayout(2, false));
    090        fieldComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    091
    092        Label label = new Label(fieldComposite, SWT.LEFT);
    093        label.setFont(curFont);
    094        label.setText("Datatype name: ");
    095
    096        nameField = new Text(fieldComposite, SWT.SINGLE | SWT.BORDER);
    097        nameField.setFont(curFont);
    098        nameField.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    099        nameField.addTraverseListener(new TraverseListener() {
    100            @Override
    101            public void keyTraversed(TraverseEvent e) {
    102                if (e.detail == SWT.TRAVERSE_TAB_NEXT || e.detail == SWT.TRAVERSE_TAB_PREVIOUS) {
    103                    e.doit = true;
    104                }
    105            }
    106        });
    107
    108        label = new Label(fieldComposite, SWT.LEFT);
    109        label.setFont(curFont);
    110        label.setText("Parent Group: ");
    111
    112        parentChoice = new Combo(fieldComposite, SWT.DROP_DOWN | SWT.BORDER | SWT.READ_ONLY);
    113        parentChoice.setFont(curFont);
    114        parentChoice.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    115        parentChoice.addSelectionListener(new SelectionAdapter() {
    116            @Override
    117            public void widgetSelected(SelectionEvent e) {
    118                parentObj = groupList.get(parentChoice.getSelectionIndex());
    119            }
    120        });
    121
    122        groupList = new Vector<>(objList.size());
    123        Object obj = null;
    124        Iterator<?> iterator = objList.iterator();
    125        while (iterator.hasNext()) {
    126            obj = iterator.next();
    127            if (obj instanceof Group) {
    128                Group g = (Group) obj;
    129                groupList.add(g);
    130                if (g.isRoot()) {
    131                    parentChoice.add(HObject.SEPARATOR);
    132                }
    133                else {
    134                    parentChoice.add(g.getPath() + g.getName() + HObject.SEPARATOR);
    135                }
    136            }
    137        }
    138
    139        if (((Group) parentObj).isRoot()) {
    140            parentChoice.select(parentChoice.indexOf(HObject.SEPARATOR));
    141        }
    142        else {
    143            parentChoice.select(parentChoice.indexOf(parentObj.getPath() + parentObj.getName() + HObject.SEPARATOR));
    144        }
    145
    146        // Create Datatype settings region
    147        createDatatypeWidget();
    148
    149        // Create Ok/Cancel button region
    150        Composite buttonComposite = new Composite(shell, SWT.NONE);
    151        buttonComposite.setLayout(new GridLayout(2, true));
    152        buttonComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    153
    154        Button okButton = new Button(buttonComposite, SWT.PUSH);
    155        okButton.setFont(curFont);
    156        okButton.setText("   &OK   ");
    157        okButton.setLayoutData(new GridData(SWT.END, SWT.FILL, true, false));
    158        okButton.addSelectionListener(new SelectionAdapter() {
    159            @Override
    160            public void widgetSelected(SelectionEvent e) {
    161                newObject = createNewDatatype();
    162
    163                if (newObject != null) {
    164                    shell.dispose();
    165                }
    166            }
    167        });
    168
    169        Button cancelButton = new Button(buttonComposite, SWT.PUSH);
    170        cancelButton.setFont(curFont);
    171        cancelButton.setText(" &Cancel ");
    172        cancelButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.FILL, true, false));
    173        cancelButton.addSelectionListener(new SelectionAdapter() {
    174            @Override
    175            public void widgetSelected(SelectionEvent e) {
    176                newObject = null;
    177                shell.dispose();
    178            }
    179        });
    180
    181        //Control[] controls = new Control[] { okButton, cancelButton };
    182        //shell.setTabList(controls);
    183        shell.pack();
    184
    185        shell.addDisposeListener(new DisposeListener() {
    186            @Override
    187            public void widgetDisposed(DisposeEvent e) {
    188                if (curFont != null) curFont.dispose();
    189            }
    190        });
    191
    192        shell.setMinimumSize(shell.computeSize(SWT.DEFAULT, SWT.DEFAULT));
    193
    194        Rectangle parentBounds = parent.getBounds();
    195        Point shellSize = shell.getSize();
    196        shell.setLocation((parentBounds.x + (parentBounds.width / 2)) - (shellSize.x / 2),
    197                          (parentBounds.y + (parentBounds.height / 2)) - (shellSize.y / 2));
    198
    199        shell.open();
    200
    201        Display display = shell.getDisplay();
    202        while (!shell.isDisposed())
    203            if (!display.readAndDispatch())
    204                display.sleep();
    205    }
    206
    207    public Datatype createNewDatatype() {
    208        String name = null;
    209        Group pgroup = null;
    210
    211        name = nameField.getText().trim();
    212        if ((name == null) || (name.length() < 1)) {
    213            shell.getDisplay().beep();
    214            Tools.showError(shell, "Create", "Datatype name is not specified.");
    215            return null;
    216        }
    217
    218        if (name.indexOf(HObject.SEPARATOR) >= 0) {
    219            shell.getDisplay().beep();
    220            Tools.showError(shell, "Create", "Datatype name cannot contain path.");
    221            return null;
    222        }
    223
    224        pgroup = groupList.get(parentChoice.getSelectionIndex());
    225
    226        if (pgroup == null) {
    227            shell.getDisplay().beep();
    228            Tools.showError(shell, "Create", "Parent group is null.");
    229            return null;
    230        }
    231
    232        Datatype datatype = null;
    233        try {
    234            String fullPath = HObject.SEPARATOR;
    235            if (pgroup.isRoot()) {
    236                fullPath += name;
    237            }
    238            else {
    239                fullPath = pgroup.getPath() + HObject.SEPARATOR + pgroup.getName() + HObject.SEPARATOR + name;
    240            }
    241            datatype = super.createNewDatatype(fullPath);
    242        }
    243        catch (Exception ex) {
    244            shell.getDisplay().beep();
    245            Tools.showError(shell, "Create", ex.getMessage());
    246            return null;
    247        }
    248
    249        return datatype;
    250    }
    251}