| /******************************************************************************* |
| * Copyright (c) 2004 IBM Corporation and others. |
| * 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 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.common.snippets.internal.util; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.dialogs.IInputValidator; |
| import org.eclipse.jface.util.Assert; |
| import org.eclipse.jface.window.Window; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.custom.CCombo; |
| import org.eclipse.swt.events.KeyEvent; |
| import org.eclipse.swt.events.KeyListener; |
| import org.eclipse.swt.events.ModifyEvent; |
| import org.eclipse.swt.events.ModifyListener; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.TraverseEvent; |
| import org.eclipse.swt.events.TraverseListener; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.layout.GridLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * Based on org.eclipse.jdt.internal.ui.refactoring.ComboSelectionDialog |
| */ |
| |
| public class CComboSelectionDialog extends Dialog { |
| CCombo combo; |
| private final String[] fAllowedStrings; |
| private final int fInitialSelectionIndex; |
| private final String fLabelText; |
| |
| int fSelectionIndex = -1; |
| private final String fShellTitle; |
| String fStringValue = null; |
| IInputValidator fValidator; |
| |
| public CComboSelectionDialog(Shell parentShell, String shellTitle, String labelText, String[] comboStrings, int initialSelectionIndex, IInputValidator validator) { |
| super(parentShell); |
| Assert.isNotNull(shellTitle); |
| Assert.isNotNull(labelText); |
| Assert.isTrue(initialSelectionIndex >= -1 && initialSelectionIndex <= comboStrings.length); |
| fShellTitle = shellTitle; |
| fLabelText = labelText; |
| fAllowedStrings = comboStrings; |
| fInitialSelectionIndex = initialSelectionIndex; |
| fValidator = validator; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.dialogs.Dialog#createButtonBar(org.eclipse.swt.widgets.Composite) |
| */ |
| protected Control createButtonBar(Composite parent) { |
| Control result = super.createButtonBar(parent); |
| if (combo != null && result != null) { |
| getButton(IDialogConstants.CANCEL_ID).addTraverseListener(new TraverseListener() { |
| public void keyTraversed(TraverseEvent e) { |
| if (e.character == SWT.TAB && e.stateMask == SWT.NONE) |
| combo.setFocus(); |
| } |
| }); |
| } |
| return result; |
| } |
| |
| /* |
| * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite) |
| */ |
| protected Control createDialogArea(Composite parent) { |
| getShell().setText(fShellTitle); |
| setShellStyle(getShellStyle() | SWT.RESIZE); |
| |
| Composite composite = (Composite) super.createDialogArea(parent); |
| Composite innerComposite = new Composite(composite, SWT.NONE); |
| innerComposite.setLayoutData(new GridData()); |
| GridLayout gl = new GridLayout(); |
| gl.numColumns = 2; |
| innerComposite.setLayout(gl); |
| |
| Label label = new Label(innerComposite, SWT.NONE); |
| label.setText(fLabelText); |
| label.setLayoutData(new GridData()); |
| |
| combo = new CCombo(innerComposite, SWT.BORDER); |
| combo.addKeyListener(new KeyListener() { |
| public void keyPressed(KeyEvent e) { |
| if (e.character == SWT.CR && e.stateMask == SWT.NONE) { |
| fStringValue = combo.getText(); |
| setReturnCode(Window.OK); |
| updateSelectionIndex(); |
| close(); |
| } |
| else if (e.character == SWT.TAB) { |
| if (e.stateMask == SWT.SHIFT) |
| combo.traverse(SWT.TRAVERSE_TAB_PREVIOUS); |
| else |
| combo.traverse(SWT.TRAVERSE_TAB_NEXT); |
| } |
| } |
| |
| public void keyReleased(KeyEvent e) { |
| } |
| }); |
| combo.addModifyListener(new ModifyListener() { |
| public void modifyText(ModifyEvent e) { |
| fStringValue = combo.getText(); |
| if (getButton(IDialogConstants.OK_ID) != null) { |
| String errorMessage = null; |
| if (fValidator != null) { |
| errorMessage = fValidator.isValid(combo.getText()); |
| } |
| getButton(IDialogConstants.OK_ID).setEnabled(errorMessage == null); |
| } |
| } |
| }); |
| for (int i = 0; i < fAllowedStrings.length; i++) { |
| combo.add(fAllowedStrings[i]); |
| } |
| combo.select(fInitialSelectionIndex); |
| fSelectionIndex = combo.getSelectionIndex(); |
| GridData gd = new GridData(); |
| gd.widthHint = convertWidthInCharsToPixels(getMaxStringLength() + 10); |
| combo.setLayoutData(gd); |
| combo.addSelectionListener(new SelectionAdapter() { |
| public void widgetSelected(SelectionEvent e) { |
| fSelectionIndex = combo.getSelectionIndex(); |
| fStringValue = combo.getText(); |
| } |
| }); |
| applyDialogFont(composite); |
| combo.setFocus(); |
| return composite; |
| } |
| |
| private int getMaxStringLength() { |
| int max = 0; |
| for (int i = 0; i < fAllowedStrings.length; i++) { |
| max = Math.max(max, fAllowedStrings[i].length()); |
| } |
| return max; |
| } |
| |
| /** |
| * @return |
| */ |
| public int getSelectionIndex() { |
| return fSelectionIndex; |
| } |
| |
| /** |
| * @return |
| */ |
| public String getStringValue() { |
| return fStringValue; |
| } |
| |
| /** |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.dialogs.Dialog#okPressed() |
| */ |
| protected void okPressed() { |
| updateSelectionIndex(); |
| super.okPressed(); |
| } |
| |
| /** |
| * @param i |
| */ |
| public void setSelectionIndex(int i) { |
| fSelectionIndex = i; |
| } |
| |
| /** |
| * @param string |
| */ |
| public void setStringValue(String string) { |
| fStringValue = string; |
| } |
| |
| void updateSelectionIndex() { |
| if (fSelectionIndex >= 0) { |
| // patch the selection index and String |
| boolean selectedString = false; |
| for (int i = 0; i < fAllowedStrings.length; i++) |
| selectedString = selectedString || fAllowedStrings[i].equals(fStringValue); |
| if (!selectedString) |
| fSelectionIndex = -1; |
| } |
| } |
| } |