/** Sets the attribute with the given name and overwrites its previous value. */
public void set(String name, Object value) {
if (value != null) {
fMap.put(name, value);
} else {
fMap.remove(name);
}
}
/**
* Reads the attributes from a StorableInput. FigureAttributes store the following types directly:
* Color, Boolean, String, Int. Other attribute types have to implement the Storable interface or
* they have to be wrapped by an object that implements Storable.
*
* @see Storable
* @see #write
*/
public void read(StorableInput dr) throws IOException {
String s = dr.readString();
if (!s.toLowerCase().equals("attributes")) {
throw new IOException("Attributes expected");
}
fMap = new Hashtable();
int size = dr.readInt();
for (int i = 0; i < size; i++) {
String key = dr.readString();
String valtype = dr.readString();
Object val = null;
if (valtype.equals("Color")) {
val = new Color(dr.readInt(), dr.readInt(), dr.readInt());
} else if (valtype.equals("Boolean")) {
val = new Boolean(dr.readString());
} else if (valtype.equals("String")) {
val = dr.readString();
} else if (valtype.equals("Int")) {
val = new Integer(dr.readInt());
} else if (valtype.equals("Storable")) {
val = dr.readStorable();
} else if (valtype.equals(Figure.POPUP_MENU)) {
// read String but don't store it
continue;
} else if (valtype.equals("UNKNOWN")) {
continue;
}
fMap.put(key, val);
}
}
/** Clones the attributes. */
public Object clone() {
try {
FigureAttributes a = (FigureAttributes) super.clone();
a.fMap = (Hashtable) fMap.clone();
return a;
} catch (CloneNotSupportedException e) {
throw new InternalError();
}
}
/**
* Writes the attributes to a StorableInput. FigureAttributes store the following types directly:
* Color, Boolean, String, Int. Other attribute types have to implement the Storable interface or
* they have to be wrapped by an object that implements Storable.
*
* @see Storable
* @see #write
*/
public void write(StorableOutput dw) {
dw.writeString("attributes");
dw.writeInt(fMap.size()); // number of attributes
Enumeration k = fMap.keys();
while (k.hasMoreElements()) {
String s = (String) k.nextElement();
Object v = fMap.get(s);
dw.writeString(s);
if (v instanceof String) {
dw.writeString("String");
dw.writeString((String) v);
} else if (v instanceof Color) {
writeColor(dw, "Color", (Color) v);
} else if (v instanceof Boolean) {
dw.writeString("Boolean");
if (((Boolean) v).booleanValue()) {
dw.writeString("TRUE");
} else {
dw.writeString("FALSE");
}
} else if (v instanceof Integer) {
dw.writeString("Int");
dw.writeInt(((Integer) v).intValue());
} else if (v instanceof Storable) {
dw.writeString("Storable");
dw.writeStorable((Storable) v);
} else if (v instanceof javax.swing.JPopupMenu) {
dw.writeString(Figure.POPUP_MENU);
} else {
System.err.println("Unknown attribute: " + v);
dw.writeString("UNKNOWN");
}
}
}
/** Tests if an attribute is defined. */
public boolean hasDefined(String name) {
return fMap.containsKey(name);
}
/**
* Gets the attribute with the given name.
*
* @returns attribute or null if the key is not defined
*/
public Object get(String name) {
return fMap.get(name);
}