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public abstract class ReactBase<R extends React> implements React<R> {
// event
private List<Procedure1<R>> onReactFunctions;
private List<Procedure1<R>> onPauseFunctions;
private List<Procedure1<R>> onResumeFunctions;
private List<Procedure1<R>> onDisposeFunctions;
// chain
private React parent;
private List<React> children;
// attributes
private int iteration = 0;
private long startTime = System.currentTimeMillis();
private long lastTime = System.currentTimeMillis();
protected ReactBase() {
onReactFunctions = new ArrayList<Procedure1<R>>();
onPauseFunctions = new ArrayList<Procedure1<R>>();
onResumeFunctions = new ArrayList<Procedure1<R>>();
onDisposeFunctions = new ArrayList<Procedure1<R>>();
this.parent = null;
}
protected ReactBase(React parent) {
this();
this.parent = parent;
}
public abstract R getInstance(React parent);
private void addChild(React react) {
if (children == null) {
children = new ArrayList<React>();
}
children.add(react);
}
private void fireEvent (List<Procedure1<R>> functions) {
for (Procedure1<R> function : functions) {
function.invoke((R) this);
}
}
@Override
public void fireOnReact() {
iteration++;
fireEvent(onReactFunctions);
lastTime = System.currentTimeMillis();
}
@Override
public int getIteration() {
return iteration;
}
@Override
public long getTimeFromStart() {
return System.currentTimeMillis() - startTime;
}
@Override
public long getTimeFromLast() {
return System.currentTimeMillis() - lastTime;
}
@Override
public React onReact(Procedure1<R> function) {
onReactFunctions.add(function);
return this;
}
@Override
public React onPause(Procedure1<R> function) {
onPauseFunctions.add(function);
return this;
}
@Override
public React onResume(Procedure1<R> function) {
onResumeFunctions.add(function);
return this;
}
@Override
public React onDispose(Procedure1<R> function) {
onDisposeFunctions.add(function);
return this;
}
@Override
public <R2 extends React> R combine(R2 react) {
addChild(react);
react.onReact(new Procedure1<R2>() {
@Override
public void invoke(R2 arg1) {
ReactBase.this.fireOnReact();
}
});
return (R) this;
}
@Override
public <R0 extends React> React filter(final Predicate1<R0> predicate) {
final R react = getInstance(this);
this.onReact(new Procedure1<R>() {
@Override
public void invoke(R arg1) {
if (predicate.invoke((R0) ReactBase.this)) {
react.fireOnReact();
}
}
});
return react;
}
abstract protected void applyPause();
@Override
public void pause() {
fireEvent(onPauseFunctions);
if (parent != null) {
parent.pause();
}
if (children != null) {
for (React child : children) {
child.pause();
}
}
applyPause();
}
abstract protected void applyResume();
@Override
public void resume() {
fireEvent(onResumeFunctions);
if (parent != null) {
parent.resume();
}
if (children != null) {
for (React child : children) {
child.resume();
}
}
applyResume();
}
abstract protected void applyDispose();
@Override
public void dispose() {
fireEvent(onDisposeFunctions);
if (parent != null) {
parent.dispose();
}
if (children != null) {
for (React child : children) {
child.dispose();
}
}
// empty lists
if (onReactFunctions != null) {
onReactFunctions.clear();
}
applyDispose();
}
} |
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