/* Copyright (c) 2010, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */
package com.cburch.logisim.std.memory;
import java.util.List;
import com.cburch.logisim.data.AbstractAttributeSet;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.data.AttributeSets;
import com.cburch.logisim.data.BitWidth;
import com.cburch.logisim.instance.StdAttr;
class CounterAttributes extends AbstractAttributeSet {
private AttributeSet base;
public CounterAttributes() {
base = AttributeSets.fixedSet(new Attribute<?>[] {
StdAttr.WIDTH, Counter.ATTR_MAX, Counter.ATTR_ON_GOAL,
StdAttr.EDGE_TRIGGER,
StdAttr.LABEL, StdAttr.LABEL_FONT
}, new Object[] {
BitWidth.create(8), Integer.valueOf(0xFF),
Counter.ON_GOAL_WRAP,
StdAttr.TRIG_RISING,
"", StdAttr.DEFAULT_LABEL_FONT
});
}
@Override
public void copyInto(AbstractAttributeSet dest) {
((CounterAttributes) dest).base = (AttributeSet) this.base.clone();
}
@Override
public List<Attribute<?>> getAttributes() {
return base.getAttributes();
}
@Override
public <V> V getValue(Attribute<V> attr) {
return base.getValue(attr);
}
@Override
public <V> void setValue(Attribute<V> attr, V value) {
Object oldValue = base.getValue(attr);
if (oldValue == null ? value == null : oldValue.equals(value)) return;
Integer newMax = null;
if (attr == StdAttr.WIDTH) {
BitWidth oldWidth = base.getValue(StdAttr.WIDTH);
BitWidth newWidth = (BitWidth) value;
int oldW = oldWidth.getWidth();
int newW = newWidth.getWidth();
Integer oldValObj = base.getValue(Counter.ATTR_MAX);
int oldVal = oldValObj.intValue();
base.setValue(StdAttr.WIDTH, newWidth);
if (newW > oldW) {
newMax = Integer.valueOf(newWidth.getMask());
} else {
int v = oldVal & newWidth.getMask();
if (v != oldVal) {
Integer newValObj = Integer.valueOf(v);
base.setValue(Counter.ATTR_MAX, newValObj);
fireAttributeValueChanged(Counter.ATTR_MAX, newValObj);
}
}
fireAttributeValueChanged(StdAttr.WIDTH, newWidth);
} else if (attr == Counter.ATTR_MAX) {
int oldVal = ((Integer) value).intValue();
BitWidth width = base.getValue(StdAttr.WIDTH);
int newVal = oldVal & width.getMask();
if (newVal != oldVal) {
@SuppressWarnings("unchecked")
V val = (V) Integer.valueOf(newVal);
value = val;
}
fireAttributeValueChanged(attr, value);
}
base.setValue(attr, value);
if (newMax != null) {
base.setValue(Counter.ATTR_MAX, newMax);
fireAttributeValueChanged(Counter.ATTR_MAX, newMax);
}
}
@Override
public boolean containsAttribute(Attribute<?> attr) {
return base.containsAttribute(attr);
}
@Override
public Attribute<?> getAttribute(String name) {
return base.getAttribute(name);
}
@Override
public boolean isReadOnly(Attribute<?> attr) {
return base.isReadOnly(attr);
}
@Override
public void setReadOnly(Attribute<?> attr, boolean value) {
base.setReadOnly(attr, value);
}
}