home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Visual Cafe 3
/
Visual Cafe 3.ISO
/
Vcafe
/
JFC.bin
/
TabStop.java
< prev
next >
Wrap
Text File
|
1998-06-30
|
5KB
|
166 lines
/*
* @(#)TabStop.java 1.7 98/04/09
*
* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
*/
package com.sun.java.swing.text;
import java.io.Serializable;
/**
* This class encapsulates a single tab stop (basically as tab stops
* are thought of by RTF). A tab stop is at a specified distance from the
* left margin, aligns text in a specified way, and has a specified leader.
* TabStops are immutable, and usually contained in TabSets.
* <p>
* Warning: serialized objects of this class will not be compatible with
* future swing releases. The current serialization support is appropriate
* for short term storage or RMI between Swing1.0 applications. It will
* not be possible to load serialized Swing1.0 objects with future releases
* of Swing. The JDK1.2 release of Swing will be the compatibility
* baseline for the serialized form of Swing objects.
*
* @version 1.7 04/09/98
*/
public class TabStop implements Serializable {
/** Character following tab is positioned at location. */
public static final int ALIGN_LEFT = 0;
/** Characters following tab are positioned such that all following
* characters up to next tab/newline end at location. */
public static final int ALIGN_RIGHT = 1;
/** Characters following tab are positioned such that all following
* characters up to next tab/newline are centered around the tabs
* location. */
public static final int ALIGN_CENTER = 2;
/** Characters following tab are aligned such that next
* decimal/tab/newline is at the tab location, very similiar to
* RIGHT_TAB, just includes decimal as additional character to look for.
*/
public static final int ALIGN_DECIMAL = 4;
public static final int ALIGN_BAR = 5;
/* Bar tabs (whatever they are) are actually a separate kind of tab
in the RTF spec. However, being a bar tab and having alignment
properties are mutually exclusive, so the reader treats barness
as being a kind of alignment. */
public static final int LEAD_NONE = 0;
public static final int LEAD_DOTS = 1;
public static final int LEAD_HYPHENS = 2;
public static final int LEAD_UNDERLINE = 3;
public static final int LEAD_THICKLINE = 4;
public static final int LEAD_EQUALS = 5;
/** Tab type. */
private int alignment;
/** Location, from the left margin, that tab is at. */
private float position;
private int leader;
/**
* Creates a tab at position <code>pos</code> with a default alignment
* and default leader.
*/
public TabStop(float pos) {
this(pos, ALIGN_LEFT, LEAD_NONE);
}
/**
* Creates a tab with the specified position <code>pos</code>,
* alignment <code>align</code> and leader <code>leader</code>.
*/
public TabStop(float pos, int align, int leader) {
alignment = align;
leader = leader;
position = pos;
}
/**
* @return the postion of the tab.
*/
public float getPosition() {
return position;
}
/**
* @return the alignment of the tab.
*/
public int getAlignment() {
return alignment;
}
/**
* @return the leader of the tab.
*/
public int getLeader() {
return leader;
}
/**
* Returns true if other equals the receiver.
*/
public boolean equals(Object other)
{
if (other.getClass() == this.getClass()) {
TabStop o = (TabStop)other;
return ( (alignment == o.alignment) &&
(leader == o.leader) &&
(position == o.position) ); /* TODO: epsilon */
}
return false;
}
/**
* Returns the hashCode for the object. This must be defined
* here to ensure 100% pure.
*
* @return the hashCode for the object
*/
public int hashCode() {
return super.hashCode();
}
/* This is for debugging; perhaps it should be removed before release */
public String toString() {
String buf;
switch(alignment) {
default:
case ALIGN_LEFT:
buf = "";
break;
case ALIGN_RIGHT:
buf = "right ";
break;
case ALIGN_CENTER:
buf = "center ";
break;
case ALIGN_DECIMAL:
buf = "decimal ";
break;
case ALIGN_BAR:
buf = "bar ";
break;
}
buf = buf + "tab @" + String.valueOf(position);
if (leader != LEAD_NONE)
buf = buf + " (w/leaders)";
return buf;
}
}