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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.util.registry;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.util.Disposer;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.awt.*;
import java.util.List;
import java.util.MissingResourceException;
/**
* @author Kirill Kalishev
* @author Konstantin Bulenkov
*/
public class RegistryValue {
private final Registry myRegistry;
private final String myKey;
private final List<RegistryValueListener> myListeners = ContainerUtil.createLockFreeCopyOnWriteList();
private boolean myChangedSinceStart;
private String myStringCachedValue;
private Integer myIntCachedValue;
private Double myDoubleCachedValue;
private Boolean myBooleanCachedValue;
RegistryValue(Registry registry, String key) {
myRegistry = registry;
myKey = key;
}
public String getKey() {
return myKey;
}
public String asString() {
final String value = get(myKey, null, true);
assert value != null : myKey;
return value;
}
public boolean asBoolean() {
if (myBooleanCachedValue == null) {
myBooleanCachedValue = Boolean.valueOf(get(myKey, "false", true));
}
return myBooleanCachedValue.booleanValue();
}
public int asInteger() {
if (myIntCachedValue == null) {
myIntCachedValue = Integer.valueOf(get(myKey, "0", true));
}
return myIntCachedValue.intValue();
}
public double asDouble() {
if (myDoubleCachedValue == null) {
myDoubleCachedValue = Double.valueOf(get(myKey, "0.0", true));
}
return myDoubleCachedValue.doubleValue();
}
public Color asColor(Color defaultValue) {
final String s = get(myKey, null, true);
if (s != null) {
final String[] rgb = s.split(",");
if (rgb.length == 3) {
try {
return new Color(Integer.parseInt(rgb[0]), Integer.parseInt(rgb[1]), Integer.parseInt(rgb[2]));
}
catch (Exception e) {//
}
}
}
return defaultValue;
}
public String getDescription() {
return get(myKey + ".description", "", false);
}
public boolean isRestartRequired() {
return Boolean.valueOf(get(myKey + ".restartRequired", "false", false));
}
public boolean isChangedFromDefault() {
return !asString().equals(getBundleValue(myKey, false));
}
private String get(String key, String defaultValue, boolean isValue) {
if (isValue) {
if (myStringCachedValue == null) {
myStringCachedValue = _get(key, defaultValue, isValue);
}
if (isBoolean()) {
myStringCachedValue = Boolean.valueOf(myStringCachedValue).toString();
}
return myStringCachedValue;
}
else {
return _get(key, defaultValue, isValue);
}
}
private String _get(String key, String defaultValue, boolean mustExistInBundle) {
final String userValue = myRegistry.getUserProperties().get(key);
if (userValue == null) {
String systemProperty = System.getProperty(key);
if (systemProperty != null) {
return systemProperty;
}
final String bundleValue = getBundleValue(key, mustExistInBundle);
if (bundleValue != null) {
return bundleValue;
}
else {
return defaultValue;
}
}
else {
return userValue;
}
}
private String getBundleValue(String key, boolean mustExist) {
try {
return Registry.getBundle().getString(key);
}
catch (MissingResourceException e) {
if (mustExist) {
throw e;
}
}
return null;
}
public void setValue(boolean value) {
setValue(Boolean.valueOf(value).toString());
}
public void setValue(int value) {
setValue(Integer.valueOf(value).toString());
}
public void setValue(String value) {
resetCache();
for (RegistryValueListener each : myListeners) {
each.beforeValueChanged(this);
}
myRegistry.getUserProperties().put(myKey, value);
for (RegistryValueListener each : myListeners) {
each.afterValueChanged(this);
}
if (!isChangedFromDefault()) {
myRegistry.getUserProperties().remove(myKey);
}
myChangedSinceStart = true;
}
public boolean isChangedSinceAppStart() {
return myChangedSinceStart;
}
public void resetToDefault() {
setValue(getBundleValue(myKey, true));
}
public void addListener(@NotNull final RegistryValueListener listener, @NotNull Disposable parent) {
myListeners.add(listener);
Disposer.register(parent, new Disposable() {
@Override
public void dispose() {
myListeners.remove(listener);
}
});
}
@Override
public String toString() {
return myKey + "=" + asString();
}
void resetCache() {
myStringCachedValue = null;
myIntCachedValue = null;
myBooleanCachedValue = null;
}
public boolean isBoolean() {
return "true".equals(myStringCachedValue) || "false".equals(myStringCachedValue);
}
}
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