/* ScrollPaneAdjustable.java -- Scrollbars for a ScrollPane
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/* ScrollPaneAdjustable.java -- Scrollbars for a ScrollPane
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Copyright (C) 1999 Free Software Foundation, Inc.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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conditions of the GNU General Public License cover the whole
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combination.
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combination.
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As a special exception, the copyright holders of this library give you
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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exception statement from your version. */
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package java.awt;
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package java.awt;
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import java.awt.event.AdjustmentListener;
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import java.awt.event.AdjustmentListener;
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import java.io.Serializable;
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import java.io.Serializable;
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/**
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/**
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* Need this class since the serialization spec for ScrollPane
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* Need this class since the serialization spec for ScrollPane
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* uses it.
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* uses it.
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*
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @since 1.4
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* @since 1.4
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*/
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*/
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public class ScrollPaneAdjustable
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public class ScrollPaneAdjustable
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implements Adjustable, Serializable
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implements Adjustable, Serializable
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{
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{
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private static final long serialVersionUID = -3359745691033257079L;
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private static final long serialVersionUID = -3359745691033257079L;
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ScrollPane sp;
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ScrollPane sp;
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int orientation;
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int orientation;
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int value;
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int value;
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int minimum;
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int minimum;
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int maximum;
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int maximum;
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int visibleAmount;
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int visibleAmount;
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int unitIncrement = 1;
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int unitIncrement = 1;
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int blockIncrement = 1;
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int blockIncrement = 1;
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AdjustmentListener adjustmentListener;
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AdjustmentListener adjustmentListener;
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private transient boolean valueIsAdjusting = false;
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private transient boolean valueIsAdjusting = false;
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ScrollPaneAdjustable (ScrollPane sp, int orientation)
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ScrollPaneAdjustable (ScrollPane sp, int orientation)
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{
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{
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this.sp = sp;
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this.sp = sp;
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this.orientation = orientation;
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this.orientation = orientation;
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}
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}
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ScrollPaneAdjustable (ScrollPane sp, int orientation, int value, int minimum,
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ScrollPaneAdjustable (ScrollPane sp, int orientation, int value, int minimum,
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int maximum, int visibleAmount, int unitIncrement,
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int maximum, int visibleAmount, int unitIncrement,
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int blockIncrement)
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int blockIncrement)
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{
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{
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this.sp = sp;
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this.sp = sp;
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this.orientation = orientation;
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this.orientation = orientation;
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this.value = value;
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this.value = value;
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this.minimum = minimum;
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this.minimum = minimum;
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this.maximum = maximum;
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this.maximum = maximum;
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this.visibleAmount = visibleAmount;
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this.visibleAmount = visibleAmount;
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this.unitIncrement = unitIncrement;
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this.unitIncrement = unitIncrement;
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this.blockIncrement = blockIncrement;
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this.blockIncrement = blockIncrement;
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}
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}
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public void addAdjustmentListener (AdjustmentListener listener)
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public void addAdjustmentListener (AdjustmentListener listener)
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{
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{
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if (listener == null)
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if (listener == null)
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return;
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return;
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adjustmentListener = AWTEventMulticaster.add (adjustmentListener, listener);
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adjustmentListener = AWTEventMulticaster.add (adjustmentListener, listener);
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}
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}
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public void removeAdjustmentListener (AdjustmentListener listener)
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public void removeAdjustmentListener (AdjustmentListener listener)
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{
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{
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if (listener == null)
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if (listener == null)
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return;
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return;
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adjustmentListener = AWTEventMulticaster.remove (adjustmentListener, listener);
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adjustmentListener = AWTEventMulticaster.remove (adjustmentListener, listener);
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}
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}
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public AdjustmentListener[] getAdjustmentListeners ()
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public AdjustmentListener[] getAdjustmentListeners ()
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{
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{
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return (AdjustmentListener[]) AWTEventMulticaster.getListeners
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return (AdjustmentListener[]) AWTEventMulticaster.getListeners
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(adjustmentListener, AdjustmentListener.class);
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(adjustmentListener, AdjustmentListener.class);
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}
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}
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public int getBlockIncrement ()
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public int getBlockIncrement ()
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{
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{
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return blockIncrement;
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return blockIncrement;
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}
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}
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public int getMaximum ()
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public int getMaximum ()
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{
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{
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return maximum;
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return maximum;
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}
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}
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public int getMinimum ()
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public int getMinimum ()
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{
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{
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return minimum;
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return minimum;
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}
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}
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public int getOrientation ()
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public int getOrientation ()
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{
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{
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return orientation;
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return orientation;
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}
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}
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public int getUnitIncrement ()
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public int getUnitIncrement ()
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{
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{
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return unitIncrement;
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return unitIncrement;
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}
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}
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public int getValue ()
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public int getValue ()
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{
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{
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return value;
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return value;
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}
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}
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public int getVisibleAmount ()
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public int getVisibleAmount ()
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{
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{
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return visibleAmount;
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return visibleAmount;
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}
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}
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public void setBlockIncrement (int blockIncrement)
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public void setBlockIncrement (int blockIncrement)
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{
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{
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this.blockIncrement = blockIncrement;
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this.blockIncrement = blockIncrement;
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}
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}
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/**
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/**
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* This method should never be called.
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* This method should never be called.
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*
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*
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* @param maximum The maximum value to be set.
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* @param maximum The maximum value to be set.
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* @throws AWTError Always throws this error when called.
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* @throws AWTError Always throws this error when called.
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*/
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*/
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public void setMaximum (int maximum) throws AWTError
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public void setMaximum (int maximum) throws AWTError
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{
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{
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throw new AWTError("Can be set by scrollpane only");
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throw new AWTError("Can be set by scrollpane only");
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}
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}
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/**
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/**
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* This method should never be called.
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* This method should never be called.
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*
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*
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* @param minimum The minimum value to be set.
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* @param minimum The minimum value to be set.
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* @throws AWTError Always throws this error when called.
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* @throws AWTError Always throws this error when called.
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*/
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*/
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public void setMinimum (int minimum)
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public void setMinimum (int minimum)
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{
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{
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throw new AWTError("Can be set by scrollpane only");
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throw new AWTError("Can be set by scrollpane only");
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}
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}
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public void setUnitIncrement (int unitIncrement)
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public void setUnitIncrement (int unitIncrement)
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{
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{
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this.unitIncrement = unitIncrement;
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this.unitIncrement = unitIncrement;
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}
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}
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public void setValue (int value)
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public void setValue (int value)
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{
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{
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this.value = value;
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this.value = value;
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if (value < minimum)
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if (value < minimum)
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minimum = value;
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minimum = value;
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if (value > maximum)
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if (value > maximum)
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maximum = value;
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maximum = value;
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}
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}
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/**
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/**
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* This method should never be called.
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* This method should never be called.
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*
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*
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* @param visibleAmount The visible amount to be set.
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* @param visibleAmount The visible amount to be set.
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* @throws AWTError Always throws this error when called.
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* @throws AWTError Always throws this error when called.
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*/
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*/
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public void setVisibleAmount (int visibleAmount)
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public void setVisibleAmount (int visibleAmount)
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{
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{
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throw new AWTError("Can be set by scrollpane only");
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throw new AWTError("Can be set by scrollpane only");
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}
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}
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public String paramString ()
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public String paramString ()
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{
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{
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return paramStringHelper()
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return paramStringHelper()
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+ ",[" + getMinimum() + ".." + getMaximum()
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+ ",[" + getMinimum() + ".." + getMaximum()
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+ "],val=" + getValue()
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+ "],val=" + getValue()
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+ ",vis=" + getVisibleAmount()
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+ ",vis=" + getVisibleAmount()
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+ ",unit=" + getUnitIncrement()
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+ ",unit=" + getUnitIncrement()
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+ ",block=" + getBlockIncrement()
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+ ",block=" + getBlockIncrement()
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+ ",isAdjusting=" + valueIsAdjusting;
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+ ",isAdjusting=" + valueIsAdjusting;
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}
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}
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private String paramStringHelper()
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private String paramStringHelper()
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{
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{
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if (getOrientation() == HORIZONTAL)
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if (getOrientation() == HORIZONTAL)
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return "horizontal";
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return "horizontal";
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else
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else
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return "vertical";
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return "vertical";
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}
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}
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public String toString()
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public String toString()
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{
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{
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return getClass().getName() + "[" + paramString() + "]";
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return getClass().getName() + "[" + paramString() + "]";
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}
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}
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/**
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/**
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* Returns true if the value is in the process of changing.
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* Returns true if the value is in the process of changing.
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*
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*
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* @since 1.4
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* @since 1.4
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*/
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*/
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public boolean getValueIsAdjusting ()
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public boolean getValueIsAdjusting ()
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{
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{
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return valueIsAdjusting;
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return valueIsAdjusting;
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}
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}
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/**
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/**
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* Sets the value of valueIsAdjusting.
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* Sets the value of valueIsAdjusting.
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*
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*
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* @since 1.4
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* @since 1.4
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*/
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*/
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public void setValueIsAdjusting (boolean valueIsAdjusting)
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public void setValueIsAdjusting (boolean valueIsAdjusting)
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{
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{
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this.valueIsAdjusting = valueIsAdjusting;
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this.valueIsAdjusting = valueIsAdjusting;
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}
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}
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} // class ScrollPaneAdjustable
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} // class ScrollPaneAdjustable
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