Source Code Cross Referenced for RowSpec.java in  » Swing-Library » abeille-forms-designer » com » jgoodies » forms » layout » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » com.jgoodies.forms.layout 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2002-2004 JGoodies Karsten Lentzsch. All Rights Reserved.
003:         *
004:         * Redistribution and use in source and binary forms, with or without 
005:         * modification, are permitted provided that the following conditions are met:
006:         * 
007:         *  o Redistributions of source code must retain the above copyright notice, 
008:         *    this list of conditions and the following disclaimer. 
009:         *     
010:         *  o Redistributions in binary form must reproduce the above copyright notice, 
011:         *    this list of conditions and the following disclaimer in the documentation 
012:         *    and/or other materials provided with the distribution. 
013:         *     
014:         *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
015:         *    its contributors may be used to endorse or promote products derived 
016:         *    from this software without specific prior written permission. 
017:         *     
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
020:         * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
021:         * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
022:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
023:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
025:         * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026:         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
027:         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
028:         * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
029:         */
030:
031:        package com.jgoodies.forms.layout;
032:
033:        import java.util.StringTokenizer;
034:
035:        /**
036:         * Specifies rows in in {@link FormLayout} by their default orientation, start
037:         * size and resizing behavior.
038:         * <p>
039:         * 
040:         * <strong>Examples:</strong><br>
041:         * The following examples specify a centered row with a size of 14&nbsp;dlu that
042:         * won't grow.
043:         * 
044:         * <pre>
045:         * new RowSpec(Sizes.dluX(14));
046:         * new RowSpec(RowSpec.CENTER, Sizes.dluX(14), 0.0);
047:         * new RowSpec(rowSpec.CENTER, Sizes.dluX(14), RowSpec.NO_GROW);
048:         * new RowSpec(&quot;14dlu&quot;);
049:         * new RowSpec(&quot;14dlu:0&quot;);
050:         * new RowSpec(&quot;center:14dlu:0&quot;);
051:         * </pre>
052:         * 
053:         * <p>
054:         * 
055:         * The {@link com.jgoodies.forms.factories.FormFactory} provides predefined
056:         * frequently used <code>RowSpec</code> instances.
057:         * 
058:         * @author Karsten Lentzsch
059:         * @version $Revision: 1.2 $
060:         * 
061:         * @see com.jgoodies.forms.factories.FormFactory
062:         */
063:
064:        public final class RowSpec extends FormSpec {
065:
066:            // Vertical Orientations ************************************************
067:
068:            /**
069:             * By default put the components in the top.
070:             */
071:            public static final DefaultAlignment TOP = FormSpec.TOP_ALIGN;
072:
073:            /**
074:             * By default put the components in the center.
075:             */
076:            public static final DefaultAlignment CENTER = FormSpec.CENTER_ALIGN;
077:
078:            /**
079:             * By default put the components in the bottom.
080:             */
081:            public static final DefaultAlignment BOTTOM = FormSpec.BOTTOM_ALIGN;
082:
083:            /**
084:             * By default fill the component into the row.
085:             */
086:            public static final DefaultAlignment FILL = FormSpec.FILL_ALIGN;
087:
088:            /**
089:             * Unless overridden the default alignment for a row is CENTER.
090:             */
091:            public static final DefaultAlignment DEFAULT = CENTER;
092:
093:            // Instance Creation ****************************************************
094:
095:            /**
096:             * Constructs a <code>RowSpec</code> from the given default orientation,
097:             * size, and resize weight.
098:             * <p>
099:             * The resize weight must be a non-negative double; you can use
100:             * <code>NO_FILL</code> as a convenience value for no resize.
101:             * 
102:             * @param defaultAlignment
103:             *            the row's default alignment
104:             * @param size
105:             *            the row's size as value with unit
106:             * @param resizeWeight
107:             *            the row's resize weight
108:             */
109:            public RowSpec(DefaultAlignment defaultAlignment, Size size,
110:                    double resizeWeight) {
111:                super (defaultAlignment, size, resizeWeight);
112:            }
113:
114:            /**
115:             * Constructs a <code>RowSpec</code> for the given size using the default
116:             * alignment, and no resizing.
117:             * 
118:             * @param size
119:             *            constant size, component size, or bounded size
120:             * @throws IllegalArgumentException
121:             *             if the pixel size is invalid or the resize weight is negative
122:             */
123:            public RowSpec(Size size) {
124:                super (DEFAULT, size, NO_GROW);
125:            }
126:
127:            /**
128:             * Constructs a <code>RowSpec</code> from the specified encoded
129:             * description. The description will be parsed to set initial values.
130:             * 
131:             * @param encodedDescription
132:             *            the encoded description
133:             */
134:            public RowSpec(String encodedDescription) {
135:                super (DEFAULT, encodedDescription);
136:            }
137:
138:            // Implementing Abstract Behavior ***************************************
139:
140:            /**
141:             * Returns if this is a horizontal specification (vs. vertical). Used to
142:             * distinct between horizontal and vertical dialog units, which have
143:             * different conversion factors.
144:             * 
145:             * @return true for horizontal, false for vertical
146:             */
147:            protected final boolean isHorizontal() {
148:                return false;
149:            }
150:
151:            // Parsing and Decoding of Row Descriptions *****************************
152:
153:            /**
154:             * Parses and splits encoded row specifications and returns an array of
155:             * <code>RowSpec</code> objects.
156:             * 
157:             * @param encodedRowSpecs
158:             *            comma separated encoded row specifications
159:             * @return an array of decoded row specifications
160:             * @throws NullPointerException
161:             *             if the encoded row specifications string is <code>null</code>
162:             * 
163:             * @see RowSpec#RowSpec(String)
164:             */
165:            public static RowSpec[] decodeSpecs(String encodedRowSpecs) {
166:                if (encodedRowSpecs == null)
167:                    throw new NullPointerException(
168:                            "The row description must not be null.");
169:
170:                StringTokenizer tokenizer = new StringTokenizer(
171:                        encodedRowSpecs, ", ");
172:                int rowCount = tokenizer.countTokens();
173:                RowSpec[] rowSpecs = new RowSpec[rowCount];
174:                for (int i = 0; i < rowCount; i++) {
175:                    rowSpecs[i] = new RowSpec(tokenizer.nextToken());
176:                }
177:                return rowSpecs;
178:            }
179:
180:        }
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