| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2004, 2007 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.ui.ide.dialogs; |
| 12 | |
| 13 | import org.eclipse.swt.widgets.Composite; |
| 14 | import org.eclipse.swt.widgets.Group; |
| 15 | import org.eclipse.ui.ide.IDEEncoding; |
| 16 | |
| 17 | /** |
| 18 | * The EncodingFieldEditor is a field editor that allows the |
| 19 | * user to set an encoding on a preference in a preference |
| 20 | * store. |
| 21 | * <p> |
| 22 | * This class may be instantiated; it is not intended to be subclassed. |
| 23 | * </p> |
| 24 | * |
| 25 | * @since 3.1 |
| 26 | */ |
| 27 | public final class EncodingFieldEditor extends AbstractEncodingFieldEditor { |
| 28 | |
| 29 | |
| 30 | /** |
| 31 | * Creates a new encoding field editor with the given preference name, label |
| 32 | * and parent. |
| 33 | * |
| 34 | * @param name |
| 35 | * the name of the preference this field editor works on |
| 36 | * @param labelText |
| 37 | * the label text of the field editor |
| 38 | * @param groupTitle |
| 39 | * the title for the field editor's control. If groupTitle is |
| 40 | * <code>null</code> the control will be unlabelled |
| 41 | * (by default a {@link Composite} instead of a {@link Group}. |
| 42 | * @param parent |
| 43 | * the parent of the field editor's control |
| 44 | * @see AbstractEncodingFieldEditor#setGroupTitle(String) |
| 45 | * @since 3.3 |
| 46 | */ |
| 47 | public EncodingFieldEditor(String name, String labelText, |
| 48 | String groupTitle, Composite parent) { |
| 49 | super(name, labelText, groupTitle, parent); |
| 50 | } |
| 51 | /** |
| 52 | * Create a new instance of the receiver on the preference called name |
| 53 | * with a label of labelText. |
| 54 | * @param name |
| 55 | * @param labelText |
| 56 | * @param parent |
| 57 | */ |
| 58 | public EncodingFieldEditor(String name, String labelText, Composite parent) { |
| 59 | super(name, labelText, parent); |
| 60 | } |
| 61 | /* (non-Javadoc) |
| 62 | * @see org.eclipse.ui.internal.ide.dialogs.AbstractEncodingFieldEditor#getStoredValue() |
| 63 | */ |
| 64 | protected String getStoredValue() { |
| 65 | return getPreferenceStore().getString(getPreferenceName()); |
| 66 | } |
| 67 | |
| 68 | /* (non-Javadoc) |
| 69 | * @see org.eclipse.jface.preference.FieldEditor#doStore() |
| 70 | */ |
| 71 | protected void doStore() { |
| 72 | String encoding = getSelectedEncoding(); |
| 73 | |
| 74 | if(hasSameEncoding(encoding)) { |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | IDEEncoding.addIDEEncoding(encoding); |
| 79 | |
| 80 | if (encoding.equals(getDefaultEnc())) { |
| 81 | getPreferenceStore().setToDefault(getPreferenceName()); |
| 82 | } else { |
| 83 | getPreferenceStore().setValue(getPreferenceName(), encoding); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | } |