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Java > Open Source Codes > org > openlaszlo > iv > flash > api > ImportAssets


1 /*
2  * $Id: ImportAssets.java,v 1.2 2002/02/15 23:44:27 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
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36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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50
51 package org.openlaszlo.iv.flash.api;
52
53 import java.io.PrintStream JavaDoc;
54 import org.openlaszlo.iv.flash.parser.*;
55 import org.openlaszlo.iv.flash.util.*;
56 import org.openlaszlo.iv.flash.commands.*;
57 import org.openlaszlo.iv.flash.context.Context;
58
59 /**
60  * The ImportAssets tag imports assets from another swf file as a linked asset.
61  * <P>
62  * "Client" swf files can import assets like fonts that are stored in "server"
63  * swfs (that are ideally cached on an end user's local system).
64  * The importing swf file references the exporting swf file with a URL.
65  * The URL needs to include the asset identifier string.
66  * Imported assets are resolved and stored in a ScriptThread's SCharacter dictionary.
67  * <BR>
68  * Note that the URL can be absolute or relative. If it's relative, it's resolved
69  * relative to the location of the importing swf file.
70  *
71  * @author Dmitry Skavish
72  * @see ExportAssets
73  * @see ImportedDef
74  */
75 public class ImportAssets extends FlashObject {
76
77     private String JavaDoc url; // the url of the exporting swf file
78 private IVVector defs; // imported definitions references (ImportedDef)
79 private IVVector names; // imported definitions names
80
81     public ImportAssets() {}
82
83     public int getTag() {
84         return Tag.IMPORTASSETS;
85     }
86
87     public void setUrl( String JavaDoc url ) {
88         this.url = url;
89     }
90
91     public void addAsset( String JavaDoc name, FlashDef def ) {
92         if( defs == null ) {
93             names = new IVVector();
94             defs = new IVVector();
95         }
96         names.addElement(name);
97         defs.addElement(def);
98     }
99
100     public static ImportAssets parse( Parser p ) {
101         ImportAssets o = new ImportAssets();
102         o.url = p.getString();
103         int num = p.getUWord();
104         o.defs = new IVVector(num);
105         o.names = new IVVector(num);
106         for( int i=0; i<num; i++ ) {
107             int tagID = p.getUWord();
108             ImportedDef idef = new ImportedDef();
109             idef.setID(tagID);
110             p.addDef(idef);
111             String JavaDoc name = p.getString();
112             o.defs.addElement( idef );
113             o.names.addElement( name );
114         }
115         return o;
116     }
117
118     // we should not collect defs here, it has to be done by other objects
119 /* public void collectDeps( DepsCollector dc ) {
120       }*/
121
122     /* protected void collectFonts( FontsCollector fc ) {
123       }*/
124
125     public void write( FlashOutput fob ) {
126         int tagPos = fob.getPos();
127         fob.skip(6);
128
129         fob.writeStringZ(url);
130         fob.writeWord( defs.size() );
131         for( int i=0; i<defs.size(); i++ ) {
132             FlashDef def = (FlashDef) defs.elementAt(i);
133             String JavaDoc name = (String JavaDoc) names.elementAt(i);
134             fob.writeDefID( def );
135             fob.writeStringZ(name);
136         }
137
138         fob.writeLongTagAt( getTag(), fob.getPos()-tagPos-6, tagPos );
139     }
140
141     public void printContent( PrintStream JavaDoc out, String JavaDoc indent ) {
142         out.println( indent+"ImportAssets: url="+url );
143         for( int i=0; i<defs.size(); i++ ) {
144             FlashDef def = (FlashDef) defs.elementAt(i);
145             String JavaDoc name = (String JavaDoc) names.elementAt(i);
146             out.println(indent+" name="+name+", defID="+def.getID());
147         }
148
149     }
150
151     protected boolean _isConstant() {
152         if( Util.hasVar(url) ) return false;
153         for( int i=0; i<names.size(); i++ ) {
154             String JavaDoc name = (String JavaDoc) names.elementAt(i);
155             if( Util.hasVar(name) ) return false;
156         }
157         return true;
158     }
159
160     public void apply( Context context ) {
161         url = context.apply(url);
162         for( int i=0; i<names.size(); i++ ) {
163             String JavaDoc name = (String JavaDoc) names.elementAt(i);
164             name = context.apply(name);
165             names.setElementAt(name, i);
166         }
167     }
168
169     protected FlashItem copyInto( FlashItem item, ScriptCopier copier ) {
170         super.copyInto( item, copier );
171         ((ImportAssets)item).url = url;
172         ((ImportAssets)item).defs = defs.getCopy(copier);
173         ((ImportAssets)item).names = (IVVector) names.clone();
174         return item;
175     }
176
177     public FlashItem getCopy( ScriptCopier copier ) {
178         return copyInto( new ImportAssets(), copier );
179     }
180 }
181
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