/* 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.key;
import java.awt.event.KeyEvent;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeSet;
public abstract class NumericConfigurator<V> implements KeyConfigurator, Cloneable {
private static final int MAX_TIME_KEY_LASTS = 800;
private Attribute<V> attr;
private int minValue;
private int maxValue;
private int curValue;
private int radix;
private int modsEx;
private long whenTyped;
public NumericConfigurator(Attribute<V> attr, int min, int max, int modifiersEx) {
this(attr, min, max, modifiersEx, 10);
}
public NumericConfigurator(Attribute<V> attr, int min, int max,
int modifiersEx, int radix) {
this.attr = attr;
this.minValue = min;
this.maxValue = max;
this.radix = radix;
this.modsEx = modifiersEx;
this.curValue = 0;
this.whenTyped = 0;
}
@Override
public NumericConfigurator<V> clone() {
try {
@SuppressWarnings("unchecked")
NumericConfigurator<V> ret = (NumericConfigurator<V>) super.clone();
ret.whenTyped = 0;
ret.curValue = 0;
return ret;
} catch (CloneNotSupportedException e) {
e.printStackTrace();
return null;
}
}
protected int getMinimumValue(AttributeSet attrs) {
return minValue;
}
protected int getMaximumValue(AttributeSet attrs) {
return maxValue;
}
protected abstract V createValue(int value);
public KeyConfigurationResult keyEventReceived(KeyConfigurationEvent event) {
if (event.getType() == KeyConfigurationEvent.KEY_TYPED) {
KeyEvent e = event.getKeyEvent();
int digit = Character.digit(e.getKeyChar(), radix);
if (digit >= 0 && e.getModifiersEx() == modsEx) {
long now = System.currentTimeMillis();
long sinceLast = now - whenTyped;
AttributeSet attrs = event.getAttributeSet();
int min = getMinimumValue(attrs);
int max = getMaximumValue(attrs);
int val = 0;
if (sinceLast < MAX_TIME_KEY_LASTS) {
val = radix * curValue;
if (val > max) {
val = 0;
}
}
val += digit;
if (val > max) {
val = digit;
if (val > max) {
return null;
}
}
event.consume();
whenTyped = now;
curValue = val;
if (val >= min) {
Object valObj = createValue(val);
return new KeyConfigurationResult(event, attr, valObj);
}
}
}
return null;
}
}