001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: /*
042: * Created on Mar 16, 2004
043: *
044: * To change the template for this generated file go to Window>Preferences>Java>Code
045: * Generation>Code and Comments
046: */
047: package org.netbeans.modules.visualweb.text.actions;
048:
049: import java.awt.event.ActionEvent;
050:
051: import javax.swing.UIManager;
052:
053: import org.netbeans.modules.visualweb.designer.WebForm;
054: import org.netbeans.modules.visualweb.text.DesignerPaneBase;
055:
056: /*
057: * Deletes the character of content that precedes the current caret position.
058: * Note the part about "character of content"; this may actually delete multiple
059: * characters in the DOM. I've implemented this to pick the previous -visual-
060: * location in the document (e.g. the location that pressing the left arrow key
061: * would take you to) and removing the characters in between.
062: */
063: public class DeletePrevCharAction extends TextAction {
064: /**
065: * Creates this object with the appropriate identifier.
066: */
067: public DeletePrevCharAction() {
068: super (DesignerPaneBase.deletePrevCharAction);
069: }
070:
071: /**
072: * The operation to perform when this action is triggered.
073: *
074: * @param e
075: * the action event
076: */
077: public void actionPerformed(ActionEvent e) {
078: DesignerPaneBase target = getTextComponent(e);
079: boolean beep = true;
080:
081: if ((target != null) /* && (target.isEditable()) */) {
082: // Document doc = target.getDocument();
083: // WebForm webform = doc.getWebForm();
084: WebForm webform = target.getWebForm();
085:
086: //// if (webform.getModel().getLiveUnit() == null) {
087: // // XXX This seems to be wrong. Model should handle it.
088: // if (!webform.isAlive()) {
089: // // Can't mutate document
090: // UIManager.getLookAndFeel().provideErrorFeedback(target);
091: //
092: // return;
093: // }
094:
095: // DesignerCaret caret = target.getCaret();
096: // if (caret == null) {
097: if (!target.hasCaret()) {
098: return;
099: }
100:
101: //// UndoEvent undoEvent = webform.getModel().writeLock(NbBundle.getMessage(DeleteNextCharAction.class, "DeleteText")); // NOI18N
102: // DomProvider.WriteLock writeLock = webform.writeLock(NbBundle.getMessage(DeleteNextCharAction.class, "DeleteText")); // NOI18N
103: // try {
104: // doc.writeLock(NbBundle.getMessage(DeleteNextCharAction.class, "DeleteText")); // NOI18N
105: // beep = !caret.removePreviousChar();
106: beep = !target.removePreviousChar();
107: // } finally {
108: //// doc.writeUnlock();
109: //// webform.getModel().writeUnlock(undoEvent);
110: // webform.writeUnlock(writeLock);
111: // }
112: }
113:
114: if (beep) {
115: UIManager.getLookAndFeel().provideErrorFeedback(target);
116: }
117: }
118: }
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