--- /dev/null
+/*
+ * (c) Copyright IBM Corp. 2000, 2001.
+ * All Rights Reserved.
+ */
+
+package net.sourceforge.phpeclipse.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.
+ */
+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);
+ }
+}
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