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: package org.netbeans.modules.visual.layout;
042:
043: import org.netbeans.api.visual.widget.Widget;
044: import org.netbeans.api.visual.layout.Layout;
045:
046: import java.awt.*;
047:
048: /**
049: * @author David Kaspar
050: */
051: public final class CardLayout implements Layout {
052:
053: private static final Point POINT_EMPTY = new Point();
054: private static final Rectangle RECTANGLE_EMPTY = new Rectangle();
055:
056: private Widget cardLayoutWidget;
057: private Widget activeChildWidget;
058:
059: public CardLayout(Widget cardLayoutWidget) {
060: assert cardLayoutWidget != null;
061: this .cardLayoutWidget = cardLayoutWidget;
062: cardLayoutWidget.setCheckClipping(true);
063: }
064:
065: public Widget getActiveChildWidget() {
066: return activeChildWidget;
067: }
068:
069: public void setActiveChildWidget(Widget activeChildWidget) {
070: this .activeChildWidget = activeChildWidget;
071: cardLayoutWidget.revalidate();
072: }
073:
074: public void layout(Widget widget) {
075: assert widget == cardLayoutWidget;
076:
077: Point preferredLocation = null;
078: Rectangle preferredBounds = null;
079:
080: if (activeChildWidget != null && activeChildWidget.isVisible())
081: for (Widget child : cardLayoutWidget.getChildren())
082: if (child == activeChildWidget) {
083: preferredLocation = child.getPreferredLocation();
084: preferredBounds = child.getPreferredBounds();
085: break;
086: }
087:
088: if (preferredLocation == null)
089: preferredLocation = POINT_EMPTY;
090: if (preferredBounds == null)
091: preferredBounds = RECTANGLE_EMPTY;
092: Rectangle otherBounds = new Rectangle(preferredBounds.x,
093: preferredBounds.y, 0, 0);
094:
095: for (Widget child : cardLayoutWidget.getChildren())
096: child.resolveBounds(preferredLocation,
097: child == activeChildWidget ? preferredBounds
098: : otherBounds);
099: }
100:
101: public boolean requiresJustification(Widget widget) {
102: return true;
103: }
104:
105: public void justify(Widget widget) {
106: assert widget == cardLayoutWidget;
107:
108: if (activeChildWidget != null && activeChildWidget.isVisible())
109: for (Widget child : cardLayoutWidget.getChildren())
110: if (child == activeChildWidget) {
111: Rectangle bounds = widget.getClientArea();
112: Point location = child.getLocation();
113: Rectangle childBounds = child.getBounds();
114:
115: bounds.translate(-location.x, -location.y);
116: childBounds.add(bounds);
117:
118: child.resolveBounds(location, bounds);
119: return;
120: }
121: }
122:
123: }
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