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/*
* Copyright 2000-2014 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.
*/
/*
* @author max
*/
package com.intellij.openapi.vfs.newvfs.events;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileSystem;
import com.intellij.util.FileContentUtilCore;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class VFilePropertyChangeEvent extends VFileEvent {
private final VirtualFile myFile;
private final String myPropertyName;
private final Object myOldValue;
private final Object myNewValue;
public VFilePropertyChangeEvent(Object requestor,
@NotNull VirtualFile file,
@NotNull String propertyName,
@Nullable Object oldValue,
@Nullable Object newValue,
boolean isFromRefresh) {
super(requestor, isFromRefresh);
myFile = file;
myPropertyName = propertyName;
myOldValue = oldValue;
myNewValue = newValue;
checkPropertyValuesCorrect(requestor, propertyName, oldValue, newValue);
}
public static void checkPropertyValuesCorrect(Object requestor, @NotNull String propertyName, Object oldValue, Object newValue) {
if (Comparing.equal(oldValue, newValue) && FileContentUtilCore.FORCE_RELOAD_REQUESTOR != requestor) {
throw new IllegalArgumentException("Values must be different, got the same: " + oldValue);
}
if (VirtualFile.PROP_NAME.equals(propertyName)) {
if (oldValue == null) throw new IllegalArgumentException("oldName must not be null");
if (newValue == null) throw new IllegalArgumentException("newName must not be null");
}
else if (VirtualFile.PROP_ENCODING.equals(propertyName)) {
if (oldValue == null) throw new IllegalArgumentException("oldCharset must not be null");
}
else if (VirtualFile.PROP_WRITABLE.equals(propertyName)) {
if (!(oldValue instanceof Boolean)) throw new IllegalArgumentException("oldWriteable must be boolean, got "+oldValue);
if (!(newValue instanceof Boolean)) throw new IllegalArgumentException("newWriteable must be boolean, got "+newValue);
}
else if (VirtualFile.PROP_HIDDEN.equals(propertyName)) {
if (!(oldValue instanceof Boolean)) throw new IllegalArgumentException("oldHidden must be boolean, got "+oldValue);
if (!(newValue instanceof Boolean)) throw new IllegalArgumentException("newHidden must be boolean, got "+newValue);
}
else if (VirtualFile.PROP_SYMLINK_TARGET.equals(propertyName)) {
if (oldValue != null && !(oldValue instanceof String)) throw new IllegalArgumentException("oldSymTarget must be String, got "+oldValue);
if (newValue != null && !(newValue instanceof String)) throw new IllegalArgumentException("newSymTarget must be String, got "+newValue);
}
}
@NotNull
@Override
public VirtualFile getFile() {
return myFile;
}
public Object getNewValue() {
return myNewValue;
}
public Object getOldValue() {
return myOldValue;
}
@NotNull
public String getPropertyName() {
return myPropertyName;
}
@NotNull
@Override
public String getPath() {
return myFile.getPath();
}
@NotNull
@Override
public VirtualFileSystem getFileSystem() {
return myFile.getFileSystem();
}
@Override
public boolean isValid() {
return myFile.isValid();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
VFilePropertyChangeEvent event = (VFilePropertyChangeEvent)o;
if (!myFile.equals(event.myFile)) return false;
if (myNewValue != null ? !myNewValue.equals(event.myNewValue) : event.myNewValue != null) return false;
if (myOldValue != null ? !myOldValue.equals(event.myOldValue) : event.myOldValue != null) return false;
if (!myPropertyName.equals(event.myPropertyName)) return false;
return true;
}
@Override
public int hashCode() {
int result = myFile.hashCode();
result = 31 * result + myPropertyName.hashCode();
result = 31 * result + (myOldValue != null ? myOldValue.hashCode() : 0);
result = 31 * result + (myNewValue != null ? myNewValue.hashCode() : 0);
return result;
}
@Override
@NotNull
@NonNls
public String toString() {
return "VfsEvent[property(" + myPropertyName + ") changed for '" + myFile + "':" +
" oldValue = " + myOldValue + ", newValue = " + myNewValue + "]";
}
}
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