1 /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved. 2 * 3 * This program and the accompanying materials are made available under 4 * the terms of the Common Public License v1.0 which accompanies this distribution, 5 * and is available at http://www.eclipse.org/legal/cpl-v10.html 6 * 7 * $Id: AttributeSet.java,v 1.1.1.1 2004/05/09 16:57:41 vlad_r Exp $ 8 */ 9 package com.vladium.emma.report.html.doc; 10 11 import java.util.HashMap; 12 import java.util.Iterator; 13 import java.util.Map; 14 15 import com.vladium.util.Strings; 16 17 // ---------------------------------------------------------------------------- 18 /** 19 * @author Vlad Roubtsov, (C) 2003 20 */ 21 public 22 abstract class AttributeSet implements IContent 23 { 24 // public: ................................................................ 25 26 public static AttributeSet create () 27 { 28 return new AttributeSetImpl (); 29 } 30 31 // ACCESSORS: 32 33 public abstract boolean isEmpty (); 34 35 // MUTATORS: 36 37 public abstract AttributeSet set (Attribute attr, String value); 38 public abstract AttributeSet set (Attribute attr, int value); 39 40 // protected: ............................................................. 41 42 // package: ............................................................... 43 44 45 AttributeSet () {} 46 47 // private: ............................................................... 48 49 50 private static final class AttributeSetImpl extends AttributeSet 51 { 52 public void emit (final HTMLWriter out) 53 { 54 boolean first = true; 55 for (Iterator a = m_attrMap.entrySet ().iterator (); a.hasNext (); ) 56 { 57 final Map.Entry entry = (Map.Entry) a.next (); 58 59 final Attribute attr = (Attribute) entry.getKey (); 60 final String value = entry.getValue ().toString (); 61 62 if (first) 63 first = false; 64 else 65 out.write (' '); 66 67 out.write (attr.getName ()); 68 out.write ("=\""); 69 70 if ((m_buf != null) && (m_buf.length () <= MAX_BUF_LENGTH)) 71 m_buf.setLength (0); 72 else 73 m_buf = new StringBuffer (); 74 75 Strings.HTMLEscape (value, m_buf); 76 out.write (m_buf.toString ()); 77 78 out.write ('\"'); 79 } 80 } 81 82 public boolean isEmpty () 83 { 84 return m_attrMap.isEmpty (); 85 } 86 87 88 public AttributeSet set (final Attribute attr, final String value) // null removes? 89 { 90 m_attrMap.put (attr, value); 91 92 return this; 93 } 94 95 public AttributeSet set (final Attribute attr, final int value) 96 { 97 m_attrMap.put (attr, new Integer (value)); // TODO: use int factory here 98 99 return this; 100 } 101 102 103 AttributeSetImpl () 104 { 105 m_attrMap = new HashMap (); 106 } 107 108 // TODO: consider lazy-initing this 109 private final Map /* Attribute->String|Integer */ m_attrMap; // never null 110 private StringBuffer m_buf; // reused by emit() 111 112 private static final int MAX_BUF_LENGTH = 4 * 1024; 113 114 } // end of nested class 115 116 } // end of class 117 // ----------------------------------------------------------------------------
