/* 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.tools;
import java.util.ArrayList;
import java.util.List;
import com.cburch.logisim.circuit.Circuit;
import com.cburch.logisim.circuit.CircuitMutation;
import com.cburch.logisim.circuit.CircuitTransaction;
import com.cburch.logisim.circuit.CircuitTransactionResult;
import com.cburch.logisim.comp.Component;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.proj.Action;
import com.cburch.logisim.proj.Project;
public class SetAttributeAction extends Action {
private String nameGetter;
private Circuit circuit;
private List<Component> comps;
private List<Attribute<Object>> attrs;
private List<Object> values;
private List<Object> oldValues;
private CircuitTransaction xnReverse;
public SetAttributeAction(Circuit circuit, String nameGetter) {
this.nameGetter = nameGetter;
this.circuit = circuit;
this.comps = new ArrayList<Component>();
this.attrs = new ArrayList<Attribute<Object>>();
this.values = new ArrayList<Object>();
this.oldValues = new ArrayList<Object>();
}
public void set(Component comp, Attribute<?> attr, Object value) {
@SuppressWarnings("unchecked")
Attribute<Object> a = (Attribute<Object>) attr;
comps.add(comp);
attrs.add(a);
values.add(value);
}
public boolean isEmpty() {
return comps.isEmpty();
}
@Override
public String getName() {
return nameGetter.toString();
}
@Override
public void doIt(Project proj) {
CircuitMutation xn = new CircuitMutation(circuit);
int len = values.size();
oldValues.clear();
for (int i = 0; i < len; i++) {
Component comp = comps.get(i);
Attribute<Object> attr = attrs.get(i);
Object value = values.get(i);
if (circuit.contains(comp)) {
oldValues.add(null);
xn.set(comp, attr, value);
} else {
AttributeSet compAttrs = comp.getAttributeSet();
oldValues.add(compAttrs.getValue(attr));
compAttrs.setValue(attr, value);
}
}
if (!xn.isEmpty()) {
CircuitTransactionResult result = xn.execute();
xnReverse = result.getReverseTransaction();
}
}
@Override
public void undo(Project proj) {
if (xnReverse != null) {
xnReverse.execute();
}
for (int i = oldValues.size() - 1; i >= 0; i--) {
Component comp = comps.get(i);
Attribute<Object> attr = attrs.get(i);
Object value = oldValues.get(i);
if (value != null) {
comp.getAttributeSet().setValue(attr, value);
}
}
}
}