54 lines
930 B
Java
54 lines
930 B
Java
package dev.kske.undoredo.core;
|
|
|
|
import java.util.Objects;
|
|
|
|
/**
|
|
* @author Kai S. K. Engelbart
|
|
* @since 0.0.1
|
|
*/
|
|
class IntChange implements Change {
|
|
|
|
private final IntWrapper wrapper;
|
|
private final int value;
|
|
|
|
IntChange(IntWrapper wrapper, int value) {
|
|
this.wrapper = wrapper;
|
|
this.value = value;
|
|
}
|
|
|
|
@Override
|
|
public void apply() {
|
|
wrapper.value += value;
|
|
}
|
|
|
|
@Override
|
|
public Change invert() {
|
|
return new IntChange(wrapper, -value);
|
|
}
|
|
|
|
@Override
|
|
public boolean isIdentity() {
|
|
return value == 0;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return String.valueOf(value);
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return Objects.hash(value, wrapper);
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this == obj)
|
|
return true;
|
|
if (!(obj instanceof IntChange))
|
|
return false;
|
|
IntChange other = (IntChange) obj;
|
|
return value == other.value && Objects.equals(wrapper, other.wrapper);
|
|
}
|
|
}
|