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/**********************************************************************
Copyright (c) 2000, 2002 IBM Corp. and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html
Contributors:
IBM Corporation - Initial implementation
**********************************************************************/
package org.eclipse.ui.externaltools.internal.ant.preferences;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
/**
* An overlaying preference store.
*/
class OverlayPreferenceStore implements IPreferenceStore {
public static final class TypeDescriptor {
private TypeDescriptor() {
}
};
public static final TypeDescriptor BOOLEAN= new TypeDescriptor();
public static final TypeDescriptor DOUBLE= new TypeDescriptor();
public static final TypeDescriptor FLOAT= new TypeDescriptor();
public static final TypeDescriptor INT= new TypeDescriptor();
public static final TypeDescriptor LONG= new TypeDescriptor();
public static final TypeDescriptor STRING= new TypeDescriptor();
public static class OverlayKey {
TypeDescriptor fDescriptor;
String fKey;
public OverlayKey(TypeDescriptor descriptor, String key) {
fDescriptor= descriptor;
fKey= key;
}
};
private class PropertyListener implements IPropertyChangeListener {
/*
* @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
*/
public void propertyChange(PropertyChangeEvent event) {
OverlayKey key= findOverlayKey(event.getProperty());
if (key != null)
propagateProperty(fParent, key, fStore);
}
};
private IPreferenceStore fParent;
private IPreferenceStore fStore;
private OverlayKey[] fOverlayKeys;
private PropertyListener fPropertyListener;
public OverlayPreferenceStore(IPreferenceStore parent, OverlayKey[] overlayKeys) {
fParent= parent;
fOverlayKeys= overlayKeys;
fStore= new PreferenceStore();
}
private OverlayKey findOverlayKey(String key) {
for (int i= 0; i < fOverlayKeys.length; i++) {
if (fOverlayKeys[i].fKey.equals(key))
return fOverlayKeys[i];
}
return null;
}
private boolean covers(String key) {
return (findOverlayKey(key) != null);
}
private void propagateProperty(IPreferenceStore orgin, OverlayKey key, IPreferenceStore target) {
if (orgin.isDefault(key.fKey)) {
if (!target.isDefault(key.fKey))
target.setToDefault(key.fKey);
return;
}
TypeDescriptor d= key.fDescriptor;
if (BOOLEAN == d) {
boolean originValue= orgin.getBoolean(key.fKey);
boolean targetValue= target.getBoolean(key.fKey);
if (targetValue != originValue)
target.setValue(key.fKey, originValue);
} else if (DOUBLE == d) {
double originValue= orgin.getDouble(key.fKey);
double targetValue= target.getDouble(key.fKey);
if (targetValue != originValue)
target.setValue(key.fKey, originValue);
} else if (FLOAT == d) {
float originValue= orgin.getFloat(key.fKey);
float targetValue= target.getFloat(key.fKey);
if (targetValue != originValue)
target.setValue(key.fKey, originValue);
} else if (INT == d) {
int originValue= orgin.getInt(key.fKey);
int targetValue= target.getInt(key.fKey);
if (targetValue != originValue)
target.setValue(key.fKey, originValue);
} else if (LONG == d) {
long originValue= orgin.getLong(key.fKey);
long targetValue= target.getLong(key.fKey);
if (targetValue != originValue)
target.setValue(key.fKey, originValue);
} else if (STRING == d) {
String originValue= orgin.getString(key.fKey);
String targetValue= target.getString(key.fKey);
if (targetValue != null && originValue != null && !targetValue.equals(originValue))
target.setValue(key.fKey, originValue);
}
}
public void propagate() {
for (int i= 0; i < fOverlayKeys.length; i++)
propagateProperty(fStore, fOverlayKeys[i], fParent);
}
private void loadProperty(IPreferenceStore orgin, OverlayKey key, IPreferenceStore target, boolean forceInitialization) {
TypeDescriptor d= key.fDescriptor;
if (BOOLEAN == d) {
if (forceInitialization)
target.setValue(key.fKey, true);
target.setValue(key.fKey, orgin.getBoolean(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultBoolean(key.fKey));
} else if (DOUBLE == d) {
if (forceInitialization)
target.setValue(key.fKey, 1.0D);
target.setValue(key.fKey, orgin.getDouble(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultDouble(key.fKey));
} else if (FLOAT == d) {
if (forceInitialization)
target.setValue(key.fKey, 1.0F);
target.setValue(key.fKey, orgin.getFloat(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultFloat(key.fKey));
} else if (INT == d) {
if (forceInitialization)
target.setValue(key.fKey, 1);
target.setValue(key.fKey, orgin.getInt(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultInt(key.fKey));
} else if (LONG == d) {
if (forceInitialization)
target.setValue(key.fKey, 1L);
target.setValue(key.fKey, orgin.getLong(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultLong(key.fKey));
} else if (STRING == d) {
if (forceInitialization)
target.setValue(key.fKey, "1"); //$NON-NLS-1$
target.setValue(key.fKey, orgin.getString(key.fKey));
target.setDefault(key.fKey, orgin.getDefaultString(key.fKey));
}
}
public void load() {
for (int i= 0; i < fOverlayKeys.length; i++)
loadProperty(fParent, fOverlayKeys[i], fStore, true);
}
public void loadDefaults() {
for (int i= 0; i < fOverlayKeys.length; i++)
setToDefault(fOverlayKeys[i].fKey);
}
public void start() {
if (fPropertyListener == null) {
fPropertyListener= new PropertyListener();
fParent.addPropertyChangeListener(fPropertyListener);
}
}
public void stop() {
if (fPropertyListener != null) {
fParent.removePropertyChangeListener(fPropertyListener);
fPropertyListener= null;
}
}
/*
* @see IPreferenceStore#addPropertyChangeListener(IPropertyChangeListener)
*/
public void addPropertyChangeListener(IPropertyChangeListener listener) {
fStore.addPropertyChangeListener(listener);
}
/*
* @see IPreferenceStore#removePropertyChangeListener(IPropertyChangeListener)
*/
public void removePropertyChangeListener(IPropertyChangeListener listener) {
fStore.removePropertyChangeListener(listener);
}
/*
* @see IPreferenceStore#firePropertyChangeEvent(String, Object, Object)
*/
public void firePropertyChangeEvent(String name, Object oldValue, Object newValue) {
fStore.firePropertyChangeEvent(name, oldValue, newValue);
}
/*
* @see IPreferenceStore#contains(String)
*/
public boolean contains(String name) {
return fStore.contains(name);
}
/*
* @see IPreferenceStore#getBoolean(String)
*/
public boolean getBoolean(String name) {
return fStore.getBoolean(name);
}
/*
* @see IPreferenceStore#getDefaultBoolean(String)
*/
public boolean getDefaultBoolean(String name) {
return fStore.getDefaultBoolean(name);
}
/*
* @see IPreferenceStore#getDefaultDouble(String)
*/
public double getDefaultDouble(String name) {
return fStore.getDefaultDouble(name);
}
/*
* @see IPreferenceStore#getDefaultFloat(String)
*/
public float getDefaultFloat(String name) {
return fStore.getDefaultFloat(name);
}
/*
* @see IPreferenceStore#getDefaultInt(String)
*/
public int getDefaultInt(String name) {
return fStore.getDefaultInt(name);
}
/*
* @see IPreferenceStore#getDefaultLong(String)
*/
public long getDefaultLong(String name) {
return fStore.getDefaultLong(name);
}
/*
* @see IPreferenceStore#getDefaultString(String)
*/
public String getDefaultString(String name) {
return fStore.getDefaultString(name);
}
/*
* @see IPreferenceStore#getDouble(String)
*/
public double getDouble(String name) {
return fStore.getDouble(name);
}
/*
* @see IPreferenceStore#getFloat(String)
*/
public float getFloat(String name) {
return fStore.getFloat(name);
}
/*
* @see IPreferenceStore#getInt(String)
*/
public int getInt(String name) {
return fStore.getInt(name);
}
/*
* @see IPreferenceStore#getLong(String)
*/
public long getLong(String name) {
return fStore.getLong(name);
}
/*
* @see IPreferenceStore#getString(String)
*/
public String getString(String name) {
return fStore.getString(name);
}
/*
* @see IPreferenceStore#isDefault(String)
*/
public boolean isDefault(String name) {
return fStore.isDefault(name);
}
/*
* @see IPreferenceStore#needsSaving()
*/
public boolean needsSaving() {
return fStore.needsSaving();
}
/*
* @see IPreferenceStore#putValue(String, String)
*/
public void putValue(String name, String value) {
if (covers(name))
fStore.putValue(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, double)
*/
public void setDefault(String name, double value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, float)
*/
public void setDefault(String name, float value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, int)
*/
public void setDefault(String name, int value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, long)
*/
public void setDefault(String name, long value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, String)
*/
public void setDefault(String name, String value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setDefault(String, boolean)
*/
public void setDefault(String name, boolean value) {
if (covers(name))
fStore.setDefault(name, value);
}
/*
* @see IPreferenceStore#setToDefault(String)
*/
public void setToDefault(String name) {
fStore.setToDefault(name);
}
/*
* @see IPreferenceStore#setValue(String, double)
*/
public void setValue(String name, double value) {
if (covers(name))
fStore.setValue(name, value);
}
/*
* @see IPreferenceStore#setValue(String, float)
*/
public void setValue(String name, float value) {
if (covers(name))
fStore.setValue(name, value);
}
/*
* @see IPreferenceStore#setValue(String, int)
*/
public void setValue(String name, int value) {
if (covers(name))
fStore.setValue(name, value);
}
/*
* @see IPreferenceStore#setValue(String, long)
*/
public void setValue(String name, long value) {
if (covers(name))
fStore.setValue(name, value);
}
/*
* @see IPreferenceStore#setValue(String, String)
*/
public void setValue(String name, String value) {
if (covers(name))
fStore.setValue(name, value);
}
/*
* @see IPreferenceStore#setValue(String, boolean)
*/
public void setValue(String name, boolean value) {
if (covers(name))
fStore.setValue(name, value);
}
}
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