Java tutorial
/* * Copyright (c) 2012 European Synchrotron Radiation Facility, * Diamond Light Source Ltd. * * 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 fable.framework.ui.dialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Dialog; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Spinner; import org.eclipse.swt.widgets.Text; import fable.framework.internal.ICrystalSymmetryVarKeys; import fable.framework.ui.internal.IVarKeys; import fable.framework.ui.rcp.Activator; /** * @author david This class creates a dialog box to get space group number if * user knows crystal symbol based on IUCr table. */ public class CrystalSymmetryDialog extends Dialog { private Combo spaceGroupSymbolCombo; private Shell shell; private Spinner spaceGroupSpinner; private static final int COMBO_BOX_WIDTH = 50; private Text spaceSystemText; private int spaceGroup = 1, spaceGroupSystem = 0; public CrystalSymmetryDialog(Shell parentShell, int spgr) { this(parentShell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL, spgr); } public CrystalSymmetryDialog(Shell parentShell, int style, int spgr) { super(parentShell, style); setText("Space Group"); spaceGroup = spgr; } public int open() { shell = new Shell(getParent(), getStyle()); shell.setText(getText()); shell.setLayout(new GridLayout(2, true)); createContents(shell); shell.pack(); shell.open(); Display display = getParent().getDisplay(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } return spaceGroup; } protected Control createContents(Composite container) { //int numColInGroup = 2; /*Group group = LookAndFeel.getGroup(container, "", 2, numColInGroup); group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1)); group.setToolTipText(IVarKeys.spaceGroupDesc);*/ Composite composite = new Composite(container, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, false).applyTo(composite); GridLayout gridLayout = new GridLayout(2, false); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; composite.setLayout(gridLayout); new Label(composite, SWT.NONE).setText("Symbol"); spaceGroupSymbolCombo = new Combo(composite, SWT.READ_ONLY | SWT.RESIZE | SWT.DROP_DOWN); spaceGroupSymbolCombo.setLayoutData(new GridData(SWT.FILL, SWT.RESIZE, true, false)); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, false) .hint(COMBO_BOX_WIDTH, SWT.DEFAULT).applyTo(spaceGroupSymbolCombo); spaceGroupSymbolCombo.setToolTipText(IVarKeys.spaceGroupDesc); for (int i = 0; i < ICrystalSymmetryVarKeys.MAX_SPACEGROUP_VALUE; i++) { spaceGroupSymbolCombo.add(ICrystalSymmetryVarKeys.SPACE_GROUP_SYMBOLS[i]); } spaceGroupSymbolCombo.select(0); spaceGroupSymbolCombo.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { // The number is 1 more than the index spaceGroup = spaceGroupSymbolCombo.getSelectionIndex() + 1; setSpaceGroup(spaceGroup); } }); // Number composite = new Composite(container, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, false).applyTo(composite); gridLayout = new GridLayout(2, false); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; composite.setLayout(gridLayout); new Label(composite, SWT.NONE).setText("Number"); spaceGroupSpinner = new Spinner(composite, SWT.SINGLE | SWT.BORDER | SWT.FILL | SWT.RESIZE); spaceGroupSpinner.setToolTipText(IVarKeys.spaceGroupDesc); spaceGroupSpinner.setLayoutData(new GridData(SWT.LEFT, SWT.RESIZE, true, false)); spaceGroupSpinner.setMinimum(ICrystalSymmetryVarKeys.MIN_SPACEGROUP_VALUE); spaceGroupSpinner.setMaximum(ICrystalSymmetryVarKeys.MAX_SPACEGROUP_VALUE); spaceGroupSpinner.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { spaceGroup = spaceGroupSpinner.getSelection(); setSpaceGroup(spaceGroup); } }); // System composite = new Composite(container, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, false).span(2, 1).applyTo(composite); gridLayout = new GridLayout(2, false); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; composite.setLayout(gridLayout); new Label(composite, SWT.NONE).setText("Crystal System:"); spaceSystemText = new Text(composite, SWT.NONE); spaceSystemText.setEditable(false); GridDataFactory.fillDefaults().grab(true, false).applyTo(spaceSystemText); spaceSystemText.setText(ICrystalSymmetryVarKeys.SPACE_GROUP_TYPES[spaceGroupSystem]); spaceSystemText.setToolTipText(IVarKeys.crystalSystemDesc); createButtons(); setSpaceGroup(spaceGroup); return container; } private void createButtons() { Composite composite = new Composite(shell, SWT.NONE); GridLayout gridLayout = new GridLayout(2, true); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; composite.setLayout(gridLayout); composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1)); Button ok = new Button(composite, SWT.PUSH | SWT.RESIZE); ok.setText("Ok"); ImageDescriptor descriptor = Activator.getImageDescriptor("images/add.gif"); if (descriptor != null) { Image image = descriptor.createImage(); if (image != null) { ok.setImage(image); } } ok.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); ok.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { shell.close(); } }); // Create the cancel button and add a handler // so that pressing it will set input to null Button cancel = new Button(composite, SWT.PUSH | SWT.RESIZE); cancel.setText("Cancel"); descriptor = Activator.getImageDescriptor("images/delete.gif"); if (descriptor != null) { Image image = descriptor.createImage(); if (image != null) { cancel.setImage(image); } } cancel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); cancel.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { spaceGroup = 0; shell.close(); } }); // Set the OK button as the default, so // user can type input and press Enter // to dismiss shell.setDefaultButton(ok); } /** * set the space group and update the space group type and associated combo * boxes * * @param _spaceGroup * - space group (1 to 230) */ public void setSpaceGroup(int spaceGroup) { this.spaceGroup = spaceGroup; // Set the controls if (spaceGroupSymbolCombo.getSelectionIndex() != spaceGroup - 1) { spaceGroupSymbolCombo.select(spaceGroup - 1); } if (spaceGroupSpinner.getSelection() != spaceGroup) { spaceGroupSpinner.setSelection(spaceGroup); } // Determine space group system int newspaceGroupSystem = 0; for (int i = 0; i < ICrystalSymmetryVarKeys.SPACE_GROUP_MAXIMUM.length; i++) { if (spaceGroup <= ICrystalSymmetryVarKeys.SPACE_GROUP_MAXIMUM[i]) { newspaceGroupSystem = i; break; } } spaceGroupSystem = newspaceGroupSystem; spaceSystemText.setText(ICrystalSymmetryVarKeys.SPACE_GROUP_TYPES[spaceGroupSystem]); } }