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Java > Open Source Codes > org > openlaszlo > iv > flash > util > DepsCollector


1 /*
2  * $Id: DepsCollector.java,v 1.3 2002/07/03 23:03:44 skavish Exp $
3  *
4  * ===========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.util;
52
53 import java.util.*;
54 import org.openlaszlo.iv.flash.api.*;
55 import org.openlaszlo.iv.flash.api.text.*;
56
57 /**
58  * This class serves as storage for collecting an flash object's dependencies.<P>
59  * Some flash objects depends on others. For example Button depends on
60  * shapes and/or sounds. PlaceObject depends on corresponding
61  * flash definition etc. According to flash file format all dependencies
62  * have to be placed in the file before the object itself.
63  * This class helps in accomplishing this task.
64  *
65  * @author Dmitry Skavish
66  * @see FontsCollector
67  */
68 public final class DepsCollector {
69
70     protected Hashtable allGenerated = new Hashtable();
71     protected IVVector collected = new IVVector(20);
72     //protected IVVector[] collected = new IVVector[20];
73 protected int current = -1;
74     protected IVVector fonts;
75
76     /**
77      * Creates collector from {@link FontsCollector}.
78      *
79      * @param fc fonts collector
80      */
81     public DepsCollector( FontsCollector fc ) {
82         fonts = fc.getFonts();
83         //for( int i=0; i<collected.length; i++ ) collected[i] = new IVVector();
84 }
85
86     /**
87      * Collects flash item
88      *
89      * @param item item to collect
90      */
91     public void addDep( FlashItem item ) {
92         getLevel(current).addElement(item);
93     }
94
95     /**
96      * Returns true if specified item has been generated
97      *
98      * @param item item to be checked as generated
99      * @return true if specified item has been generated
100      */
101     public boolean isGenerated( FlashItem item ) {
102         return allGenerated.containsKey(item);
103     }
104
105     /**
106      * Adds specified item to the list of generated item
107      *
108      * @param item item to be added as generated
109      */
110     public void addGenerated( FlashItem item ) {
111         allGenerated.put(item,item);
112     }
113
114     /**
115      * Collects specified font.<p>
116      * Check for given {@link Font} if there is corresponding
117      * {@link FontDef} already collected, if not then collect this font as well.
118      *
119      * @param font font to collect
120      */
121     public void addDep( Font font ) {
122         for( int i=0; i<fonts.size(); i++ ) {
123             FontDef fdef = (FontDef) fonts.elementAt(i);
124             if( fdef.getFont() == font ) {
125                 addDep( fdef );
126                 return;
127             }
128         }
129     }
130
131     /**
132      * Starts next level of collection.
133      */
134     public void startCollect() {
135         getLevel(++current).reset();
136         //for( int i=0; i<current; i++ ) System.out.print( " " );
137 //System.out.println( "start collect: current="+current );
138 }
139
140     /**
141      * Stops current collection level.
142      */
143     public void endCollect() {
144         //for( int i=0; i<current; i++ ) System.out.print( " " );
145 --current;
146         //System.out.println( "end collect: current="+current );
147 }
148
149     /**
150      * Returns collected objects.
151      *
152      * @return vector of all objects collected on current level
153      */
154     public IVVector getCollected() {
155         return getLevel(current);
156     }
157
158     private IVVector getLevel( int num ) {
159         IVVector level;
160         if( num >= collected.size() ) {
161             level = new IVVector();
162             collected.setElementAt(level, num);
163         } else {
164             level = (IVVector) collected.elementAt(num);
165             if( level == null ) {
166                 level = new IVVector();
167                 collected.setElementAt(level, num);
168             }
169         }
170         return level;
171     }
172
173 }
174
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