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1
29
30 package nextapp.echo2.app.componentxml.propertypeer;
31
32 import java.util.Collections  ;
33 import java.util.HashMap ;
34 import java.util.Map ;
35
36 import org.w3c.dom.Element ;
37
38 import nextapp.echo2.app.Extent;
39 import nextapp.echo2.app.componentxml.InvalidPropertyException;
40 import nextapp.echo2.app.componentxml.PropertyXmlPeer;
41
42
46 public class ExtentPeer
47 implements PropertyXmlPeer {
48
49 private static final Map UNITS_TEXT_TO_CONSTANT;
50 static {
51 Map constantMap = new HashMap ();
52 constantMap.put("cm", new Integer (Extent.CM));
53 constantMap.put("em", new Integer (Extent.EM));
54 constantMap.put("ex", new Integer (Extent.EX));
55 constantMap.put("in", new Integer (Extent.IN));
56 constantMap.put("mm", new Integer (Extent.MM));
57 constantMap.put("pc", new Integer (Extent.PC));
58 constantMap.put("pt", new Integer (Extent.PT));
59 constantMap.put("px", new Integer (Extent.PX));
60 constantMap.put("%", new Integer (Extent.PERCENT));
61 UNITS_TEXT_TO_CONSTANT = Collections.unmodifiableMap(constantMap);
62 }
63
64
71 public static Extent toExtent(String value) {
72 int suffixIndex = -1;
73 for (int i = 0; i < value.length(); ++i) {
74 char ch = value.charAt(i);
75 if (!((i == 0 && ch == '-') || Character.isDigit(ch))) {
76 suffixIndex = i;
78 break;
79 }
80 }
81 if (suffixIndex < 1) {
82 throw new IllegalArgumentException ("Invalid Extent value: " + value);
83 }
84
85 int size = Integer.parseInt(value.substring(0, suffixIndex));
86 String unitsText = value.substring(suffixIndex);
87
88 if (!UNITS_TEXT_TO_CONSTANT.containsKey(unitsText)) {
89 throw new IllegalArgumentException ("Invalid Extent units: " + value);
90 }
91 int units = ((Integer ) UNITS_TEXT_TO_CONSTANT.get(unitsText)).intValue();
92
93 return new Extent(size, units);
94 }
95
96
100 public Object getValue(ClassLoader classLoader, Class objectClass, Element propertyElement)
101 throws InvalidPropertyException {
102 return(toExtent(propertyElement.getAttribute("value")));
103 }
104 }
105 |
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