/* 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.gui.log;
import com.cburch.logisim.circuit.Circuit;
import com.cburch.logisim.circuit.CircuitEvent;
import com.cburch.logisim.circuit.CircuitListener;
import com.cburch.logisim.circuit.CircuitState;
import com.cburch.logisim.circuit.SubcircuitFactory;
import com.cburch.logisim.comp.Component;
import com.cburch.logisim.data.AttributeEvent;
import com.cburch.logisim.data.AttributeListener;
import com.cburch.logisim.data.Value;
import com.cburch.logisim.instance.StdAttr;
class SelectionItem implements AttributeListener, CircuitListener {
private Model model;
private Component[] path;
private Component comp;
private Object option;
private int radix = 2;
private String shortDescriptor;
private String longDescriptor;
public SelectionItem(Model model, Component[] path, Component comp, Object option) {
this.model = model;
this.path = path;
this.comp = comp;
this.option = option;
computeDescriptors();
if (path != null) {
model.getCircuitState().getCircuit().addCircuitListener(this);
for (int i = 0; i < path.length; i++) {
path[i].getAttributeSet().addAttributeListener(this);
SubcircuitFactory circFact = (SubcircuitFactory) path[i].getFactory();
circFact.getSubcircuit().addCircuitListener(this);
}
}
comp.getAttributeSet().addAttributeListener(this);
}
private boolean computeDescriptors() {
boolean changed = false;
Loggable log = (Loggable) comp.getFeature(Loggable.class);
String newShort = log.getLogName(option);
if (newShort == null || newShort.equals("")) {
newShort = comp.getFactory().getDisplayName()
+ comp.getLocation().toString();
if (option != null) {
newShort += "." + option.toString();
}
}
if (!newShort.equals(shortDescriptor)) {
changed = true;
shortDescriptor = newShort;
}
StringBuilder buf = new StringBuilder();
for (int i = 0; i < path.length; i++) {
if (i > 0) {
buf.append(".");
}
String label = path[i].getAttributeSet().getValue(StdAttr.LABEL);
if (label != null && !label.equals("")) {
buf.append(label);
} else {
buf.append(path[i].getFactory().getDisplayName());
buf.append(path[i].getLocation());
}
buf.append(".");
}
buf.append(shortDescriptor);
String newLong = buf.toString();
if (!newLong.equals(longDescriptor)) {
changed = true;
longDescriptor = newLong;
}
return changed;
}
public Component[] getPath() {
return path;
}
public Component getComponent() {
return comp;
}
public Object getOption() {
return option;
}
public int getRadix() {
return radix;
}
public void setRadix(int value) {
radix = value;
model.fireSelectionChanged(new ModelEvent());
}
public String toShortString() {
return shortDescriptor;
}
@Override
public String toString() {
return longDescriptor;
}
public Value fetchValue(CircuitState root) {
CircuitState cur = root;
for (int i = 0; i < path.length; i++) {
SubcircuitFactory circFact = (SubcircuitFactory) path[i].getFactory();
cur = circFact.getSubstate(cur, path[i]);
}
Loggable log = (Loggable) comp.getFeature(Loggable.class);
return log == null ? Value.NIL : log.getLogValue(cur, option);
}
@Override
public void attributeListChanged(AttributeEvent e) { }
@Override
public void attributeValueChanged(AttributeEvent e) {
if (computeDescriptors()) {
model.fireSelectionChanged(new ModelEvent());
}
}
@Override
public void circuitChanged(CircuitEvent event) {
int action = event.getAction();
if (action == CircuitEvent.ACTION_CLEAR
|| action == CircuitEvent.ACTION_REMOVE) {
Circuit circ = event.getCircuit();
Component circComp = null;
if (circ == model.getCircuitState().getCircuit()) {
circComp = path != null && path.length > 0 ? path[0] : comp;
} else if (path != null) {
for (int i = 0; i < path.length; i++) {
SubcircuitFactory circFact = (SubcircuitFactory) path[i].getFactory();
if (circ == circFact.getSubcircuit()) {
circComp = i + 1 < path.length ? path[i + 1] : comp;
}
}
}
if (circComp == null) {
return;
}
if (action == CircuitEvent.ACTION_REMOVE
&& event.getData() != circComp) {
return;
}
int index = model.getSelection().indexOf(this);
if (index < 0) {
return;
}
model.getSelection().remove(index);
}
}
}