/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved. | |
*/ | |
package org.eclipse.compare.internal; | |
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. | |
*/ | |
public 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); | |
} | |
} |