+ * A ScopedPreferenceStore does the lookup of a preference based on it's search + * scopes and sets the value of the preference based on its store scope. + *
+ *+ * The default scope is always included in the search scopes when searching for + * preference values. + *
+ * + * @see org.eclipse.core.runtime.preferences + * @since 3.1 + */ +public class ScopedPreferenceStore extends EventManager implements + IPreferenceStore, IPersistentPreferenceStore { + + /** + * The storeContext is the context where values will stored with the + * setValue methods. If there are no searchContexts this will be the search + * context. (along with the "default" context) + */ + private IScopeContext storeContext; + + /** + * The searchContext is the array of contexts that will be used by the get + * methods for searching for values. + */ + private IScopeContext[] searchContexts; + + /** + * A boolean to indicate the property changes should not be propagated. + */ + protected boolean silentRunning = false; + + /** + * The listener on the IEclipsePreferences. This is used to forward updates + * to the property change listeners on the preference store. + */ + IEclipsePreferences.IPreferenceChangeListener preferencesListener; + + /** + * The default context is the context where getDefault and setDefault + * methods will search. This context is also used in the search. + */ + private IScopeContext defaultContext = new DefaultScope(); + + /** + * The nodeQualifer is the string used to look up the node in the contexts. + */ + String nodeQualifier; + + /** + * The defaultQualifier is the string used to look up the default node. + */ + String defaultQualifier; + + /** + * Boolean value indicating whether or not this store has changes to be + * saved. + */ + private boolean dirty; + + /** + * Create a new instance of the receiver. Store the values in context in the + * node looked up by qualifier. NOTE: Any instance of + * ScopedPreferenceStore should call + * + * @param context + * the scope to store to + * @param qualifier + * the qualifier used to look up the preference node + * @param defaultQualifierPath + * the qualifier used when looking up the defaults + */ + public ScopedPreferenceStore(IScopeContext context, String qualifier, + String defaultQualifierPath) { + this(context, qualifier); + this.defaultQualifier = defaultQualifierPath; + } + + /** + * Create a new instance of the receiver. Store the values in context in the + * node looked up by qualifier. + * + * @param context + * the scope to store to + * @param qualifier + * the qualifer used to look up the preference node + */ + public ScopedPreferenceStore(IScopeContext context, String qualifier) { + storeContext = context; + this.nodeQualifier = qualifier; + this.defaultQualifier = qualifier; + + ((IEclipsePreferences) getStorePreferences().parent()) + .addNodeChangeListener(getNodeChangeListener()); + } + + /** + * Return a node change listener that adds a removes the receiver when nodes + * change. + * + * @return INodeChangeListener + */ + private INodeChangeListener getNodeChangeListener() { + return new IEclipsePreferences.INodeChangeListener() { + /* + * (non-Javadoc) + * + * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.INodeChangeListener#added(org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent) + */ + public void added(NodeChangeEvent event) { + if (nodeQualifier.equals(event.getChild().name()) + && isListenerAttached()) { + getStorePreferences().addPreferenceChangeListener( + preferencesListener); + } + } + + /* + * (non-Javadoc) + * + * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.INodeChangeListener#removed(org.eclipse.core.runtime.preferences.IEclipsePreferences.NodeChangeEvent) + */ + public void removed(NodeChangeEvent event) { + // Do nothing as there are no events from removed node + } + }; + } + + /** + * Initialize the preferences listener. + */ + private void initializePreferencesListener() { + if (preferencesListener == null) { + preferencesListener = new IEclipsePreferences.IPreferenceChangeListener() { + /* + * (non-Javadoc) + * + * @see org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener#preferenceChange(org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent) + */ + public void preferenceChange(PreferenceChangeEvent event) { + + if (silentRunning) { + return; + } + + Object oldValue = event.getOldValue(); + Object newValue = event.getNewValue(); + String key = event.getKey(); + if (newValue == null) { + newValue = getDefault(key, oldValue); + } else if (oldValue == null) { + oldValue = getDefault(key, newValue); + } + firePropertyChangeEvent(event.getKey(), oldValue, newValue); + } + }; + getStorePreferences().addPreferenceChangeListener( + preferencesListener); + } + + } + + /** + * Does its best at determining the default value for the given key. Checks + * the given object's type and then looks in the list of defaults to see if + * a value exists. If not or if there is a problem converting the value, the + * default default value for that type is returned. + * + * @param key + * the key to search + * @param obj + * the object who default we are looking for + * @return Object ornull
+ */
+ Object getDefault(String key, Object obj) {
+ IEclipsePreferences defaults = getDefaultPreferences();
+ if (obj instanceof String) {
+ return defaults.get(key, STRING_DEFAULT_DEFAULT);
+ } else if (obj instanceof Integer) {
+ return new Integer(defaults.getInt(key, INT_DEFAULT_DEFAULT));
+ } else if (obj instanceof Double) {
+ return new Double(defaults.getDouble(key, DOUBLE_DEFAULT_DEFAULT));
+ } else if (obj instanceof Float) {
+ return new Float(defaults.getFloat(key, FLOAT_DEFAULT_DEFAULT));
+ } else if (obj instanceof Long) {
+ return new Long(defaults.getLong(key, LONG_DEFAULT_DEFAULT));
+ } else if (obj instanceof Boolean) {
+ return defaults.getBoolean(key, BOOLEAN_DEFAULT_DEFAULT) ? Boolean.TRUE
+ : Boolean.FALSE;
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Return the IEclipsePreferences node associated with this store.
+ *
+ * @return the preference node for this store
+ */
+ IEclipsePreferences getStorePreferences() {
+ return storeContext.getNode(nodeQualifier);
+ }
+
+ /**
+ * Return the default IEclipsePreferences for this store.
+ *
+ * @return this store's default preference node
+ */
+ private IEclipsePreferences getDefaultPreferences() {
+ return defaultContext.getNode(defaultQualifier);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#addPropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener)
+ */
+ public void addPropertyChangeListener(IPropertyChangeListener listener) {
+ initializePreferencesListener();// Create the preferences listener if it
+ // does not exist
+ addListenerObject(listener);
+ }
+
+ /**
+ * Return the preference path to search preferences on. This is the list of
+ * preference nodes based on the scope contexts for this store. If there are
+ * no search contexts set, then return this store's context.
+ *
+ * Whether or not the default context should be included in the resulting
+ * list is specified by the includeDefault parameter.
+ *
true if the default context should be included
+ * and false otherwise
+ * @return IEclipsePreferences[]
+ * @since 3.4 public, was added in 3.1 as private method
+ */
+ public IEclipsePreferences[] getPreferenceNodes(boolean includeDefault) {
+ // if the user didn't specify a search order, then return the scope that
+ // this store was created on. (and optionally the default)
+ if (searchContexts == null) {
+ if (includeDefault) {
+ return new IEclipsePreferences[] { getStorePreferences(),
+ getDefaultPreferences() };
+ }
+ return new IEclipsePreferences[] { getStorePreferences() };
+ }
+ // otherwise the user specified a search order so return the appropriate
+ // nodes based on it
+ int length = searchContexts.length;
+ if (includeDefault) {
+ length++;
+ }
+ IEclipsePreferences[] preferences = new IEclipsePreferences[length];
+ for (int i = 0; i < searchContexts.length; i++) {
+ preferences[i] = searchContexts[i].getNode(nodeQualifier);
+ }
+ if (includeDefault) {
+ preferences[length - 1] = getDefaultPreferences();
+ }
+ return preferences;
+ }
+
+ /**
+ * Set the search contexts to scopes. When searching for a value the seach
+ * will be done in the order of scope contexts and will not search the
+ * storeContext unless it is in this list.
+ *
+ * If the given list is null, then clear this store's search
+ * contexts. This means that only this store's scope context and default
+ * scope will be used during preference value searching.
+ *
+ * The defaultContext will be added to the end of this list automatically + * and MUST NOT be included by the user. + *
+ * + * @param scopes + * a list of scope contexts to use when searching, or + *null
+ */
+ public void setSearchContexts(IScopeContext[] scopes) {
+ this.searchContexts = scopes;
+ if (scopes == null) {
+ return;
+ }
+
+ // Assert that the default was not included (we automatically add it to
+ // the end)
+ for (int i = 0; i < scopes.length; i++) {
+ if (scopes[i].equals(defaultContext)) {
+ Assert
+ .isTrue(
+ false,
+ "Do not add the default to the search contexts");
+ }
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#contains(java.lang.String)
+ */
+ public boolean contains(String name) {
+ if (name == null) {
+ return false;
+ }
+ return (Platform.getPreferencesService().get(name, null,
+ getPreferenceNodes(true))) != null;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#firePropertyChangeEvent(java.lang.String,
+ * java.lang.Object, java.lang.Object)
+ */
+ public void firePropertyChangeEvent(String name, Object oldValue,
+ Object newValue) {
+ // important: create intermediate array to protect against listeners
+ // being added/removed during the notification
+ final Object[] list = getListeners();
+ if (list.length == 0) {
+ return;
+ }
+ final PropertyChangeEvent event = new PropertyChangeEvent(this, name,
+ oldValue, newValue);
+ for (int i = 0; i < list.length; i++) {
+ final IPropertyChangeListener listener = (IPropertyChangeListener) list[i];
+ SafeRunner.run(new SafeRunnable(JFaceResources
+ .getString("PreferenceStore.changeError")) { //$NON-NLS-1$
+ public void run() {
+ listener.propertyChange(event);
+ }
+ });
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getBoolean(java.lang.String)
+ */
+ public boolean getBoolean(String name) {
+ String value = internalGet(name);
+ return value == null ? BOOLEAN_DEFAULT_DEFAULT : Boolean.valueOf(value)
+ .booleanValue();
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultBoolean(java.lang.String)
+ */
+ public boolean getDefaultBoolean(String name) {
+ return getDefaultPreferences()
+ .getBoolean(name, BOOLEAN_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultDouble(java.lang.String)
+ */
+ public double getDefaultDouble(String name) {
+ return getDefaultPreferences().getDouble(name, DOUBLE_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultFloat(java.lang.String)
+ */
+ public float getDefaultFloat(String name) {
+ return getDefaultPreferences().getFloat(name, FLOAT_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultInt(java.lang.String)
+ */
+ public int getDefaultInt(String name) {
+ return getDefaultPreferences().getInt(name, INT_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultLong(java.lang.String)
+ */
+ public long getDefaultLong(String name) {
+ return getDefaultPreferences().getLong(name, LONG_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultString(java.lang.String)
+ */
+ public String getDefaultString(String name) {
+ return getDefaultPreferences().get(name, STRING_DEFAULT_DEFAULT);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getDouble(java.lang.String)
+ */
+ public double getDouble(String name) {
+ String value = internalGet(name);
+ if (value == null) {
+ return DOUBLE_DEFAULT_DEFAULT;
+ }
+ try {
+ return Double.parseDouble(value);
+ } catch (NumberFormatException e) {
+ return DOUBLE_DEFAULT_DEFAULT;
+ }
+ }
+
+ /**
+ * Return the string value for the specified key. Look in the nodes which
+ * are specified by this object's list of search scopes. If the value does
+ * not exist then return null.
+ *
+ * @param key
+ * the key to search with
+ * @return String or null if the value does not exist.
+ */
+ private String internalGet(String key) {
+ return Platform.getPreferencesService().get(key, null,
+ getPreferenceNodes(true));
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getFloat(java.lang.String)
+ */
+ public float getFloat(String name) {
+ String value = internalGet(name);
+ if (value == null) {
+ return FLOAT_DEFAULT_DEFAULT;
+ }
+ try {
+ return Float.parseFloat(value);
+ } catch (NumberFormatException e) {
+ return FLOAT_DEFAULT_DEFAULT;
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getInt(java.lang.String)
+ */
+ public int getInt(String name) {
+ String value = internalGet(name);
+ if (value == null) {
+ return INT_DEFAULT_DEFAULT;
+ }
+ try {
+ return Integer.parseInt(value);
+ } catch (NumberFormatException e) {
+ return INT_DEFAULT_DEFAULT;
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getLong(java.lang.String)
+ */
+ public long getLong(String name) {
+ String value = internalGet(name);
+ if (value == null) {
+ return LONG_DEFAULT_DEFAULT;
+ }
+ try {
+ return Long.parseLong(value);
+ } catch (NumberFormatException e) {
+ return LONG_DEFAULT_DEFAULT;
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#getString(java.lang.String)
+ */
+ public String getString(String name) {
+ String value = internalGet(name);
+ return value == null ? STRING_DEFAULT_DEFAULT : value;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#isDefault(java.lang.String)
+ */
+ public boolean isDefault(String name) {
+ if (name == null) {
+ return false;
+ }
+ return (Platform.getPreferencesService().get(name, null,
+ getPreferenceNodes(false))) == null;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#needsSaving()
+ */
+ public boolean needsSaving() {
+ return dirty;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#putValue(java.lang.String,
+ * java.lang.String)
+ */
+ public void putValue(String name, String value) {
+ try {
+ // Do not notify listeners
+ silentRunning = true;
+ getStorePreferences().put(name, value);
+ } finally {
+ // Be sure that an exception does not stop property updates
+ silentRunning = false;
+ dirty = true;
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#removePropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener)
+ */
+ public void removePropertyChangeListener(IPropertyChangeListener listener) {
+ removeListenerObject(listener);
+ if (!isListenerAttached()) {
+ disposePreferenceStoreListener();
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * double)
+ */
+ public void setDefault(String name, double value) {
+ getDefaultPreferences().putDouble(name, value);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * float)
+ */
+ public void setDefault(String name, float value) {
+ getDefaultPreferences().putFloat(name, value);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * int)
+ */
+ public void setDefault(String name, int value) {
+ getDefaultPreferences().putInt(name, value);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * long)
+ */
+ public void setDefault(String name, long value) {
+ getDefaultPreferences().putLong(name, value);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * java.lang.String)
+ */
+ public void setDefault(String name, String defaultObject) {
+ getDefaultPreferences().put(name, defaultObject);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String,
+ * boolean)
+ */
+ public void setDefault(String name, boolean value) {
+ getDefaultPreferences().putBoolean(name, value);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setToDefault(java.lang.String)
+ */
+ public void setToDefault(String name) {
+
+ String oldValue = getString(name);
+ String defaultValue = getDefaultString(name);
+ try {
+ silentRunning = true;// Turn off updates from the store
+ // removing a non-existing preference is a no-op so call the Core
+ // API directly
+ getStorePreferences().remove(name);
+ if (oldValue != defaultValue){
+ dirty = true;
+ firePropertyChangeEvent(name, oldValue, defaultValue);
+ }
+
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * double)
+ */
+ public void setValue(String name, double value) {
+ double oldValue = getDouble(name);
+ if (oldValue == value) {
+ return;
+ }
+ try {
+ silentRunning = true;// Turn off updates from the store
+ if (getDefaultDouble(name) == value) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().putDouble(name, value);
+ }
+ dirty = true;
+ firePropertyChangeEvent(name, new Double(oldValue), new Double(
+ value));
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * float)
+ */
+ public void setValue(String name, float value) {
+ float oldValue = getFloat(name);
+ if (oldValue == value) {
+ return;
+ }
+ try {
+ silentRunning = true;// Turn off updates from the store
+ if (getDefaultFloat(name) == value) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().putFloat(name, value);
+ }
+ dirty = true;
+ firePropertyChangeEvent(name, new Float(oldValue), new Float(value));
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * int)
+ */
+ public void setValue(String name, int value) {
+ int oldValue = getInt(name);
+ if (oldValue == value) {
+ return;
+ }
+ try {
+ silentRunning = true;// Turn off updates from the store
+ if (getDefaultInt(name) == value) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().putInt(name, value);
+ }
+ dirty = true;
+ firePropertyChangeEvent(name, new Integer(oldValue), new Integer(
+ value));
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * long)
+ */
+ public void setValue(String name, long value) {
+ long oldValue = getLong(name);
+ if (oldValue == value) {
+ return;
+ }
+ try {
+ silentRunning = true;// Turn off updates from the store
+ if (getDefaultLong(name) == value) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().putLong(name, value);
+ }
+ dirty = true;
+ firePropertyChangeEvent(name, new Long(oldValue), new Long(value));
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * java.lang.String)
+ */
+ public void setValue(String name, String value) {
+ // Do not turn on silent running here as Strings are propagated
+ if (getDefaultString(name).equals(value)) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().put(name, value);
+ }
+ dirty = true;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String,
+ * boolean)
+ */
+ public void setValue(String name, boolean value) {
+ boolean oldValue = getBoolean(name);
+ if (oldValue == value) {
+ return;
+ }
+ try {
+ silentRunning = true;// Turn off updates from the store
+ if (getDefaultBoolean(name) == value) {
+ getStorePreferences().remove(name);
+ } else {
+ getStorePreferences().putBoolean(name, value);
+ }
+ dirty = true;
+ firePropertyChangeEvent(name, oldValue ? Boolean.TRUE
+ : Boolean.FALSE, value ? Boolean.TRUE : Boolean.FALSE);
+ } finally {
+ silentRunning = false;// Restart listening to preferences
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.jface.preference.IPersistentPreferenceStore#save()
+ */
+ public void save() throws IOException {
+ try {
+ getStorePreferences().flush();
+ dirty = false;
+ } catch (BackingStoreException e) {
+ throw new IOException(e.getMessage());
+ }
+
+ }
+
+ /**
+ * Dispose the receiver.
+ */
+ private void disposePreferenceStoreListener() {
+
+ IEclipsePreferences root = (IEclipsePreferences) Platform
+ .getPreferencesService().getRootNode().node(
+ Plugin.PLUGIN_PREFERENCE_SCOPE);
+ try {
+ if (!(root.nodeExists(nodeQualifier))) {
+ return;
+ }
+ } catch (BackingStoreException e) {
+ return;// No need to report here as the node won't have the
+ // listener
+ }
+
+ IEclipsePreferences preferences = getStorePreferences();
+ if (preferences == null) {
+ return;
+ }
+ if (preferencesListener != null) {
+ preferences.removePreferenceChangeListener(preferencesListener);
+ preferencesListener = null;
+ }
+ }
+
+}
diff --git a/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/handlers/E4PreferencesHandler.java b/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/handlers/E4PreferencesHandler.java
new file mode 100644
index 0000000..166989b
--- /dev/null
+++ b/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/handlers/E4PreferencesHandler.java
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2014 OPCoach.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Manumitting Technologies : Brian de Alwis for initial API and implementation
+ * OPCoach : O.Prouvost fix bugs on hierarchy
+ *******************************************************************************//*
+ * Handler to open up a configured preferences dialog.
+ * Written by Brian de Alwis, Manumitting Technologies.
+ * Placed in the public domain.
+ * This code comes from : http://www.eclipse.org/forums/index.php/fa/4347/
+ * and was referenced in the thread : http://www.eclipse.org/forums/index.php/m/750139/
+ */
+package com.opcoach.e4.preferences.handlers;
+
+import javax.inject.Named;
+
+import org.eclipse.e4.core.di.annotations.CanExecute;
+import org.eclipse.e4.core.di.annotations.Execute;
+import org.eclipse.e4.ui.services.IServiceConstants;
+import org.eclipse.jface.preference.PreferenceDialog;
+import org.eclipse.jface.preference.PreferenceManager;
+import org.eclipse.jface.viewers.ViewerComparator;
+import org.eclipse.swt.widgets.Shell;
+
+import com.opcoach.e4.preferences.internal.E4PreferenceRegistry;
+
+
+public class E4PreferencesHandler
+{
+
+
+ @CanExecute
+ public boolean canExecute()
+ {
+ return true;
+ }
+
+ @Execute
+ public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell, E4PreferenceRegistry prefReg)
+ {
+ PreferenceManager pm = prefReg.getPreferenceManager();
+ PreferenceDialog dialog = new PreferenceDialog(shell, pm);
+ dialog.create();
+ dialog.getTreeViewer().setComparator(new ViewerComparator());
+ dialog.getTreeViewer().expandAll();
+ dialog.open();
+ }
+
+
+
+
+}
diff --git a/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/internal/E4PreferenceRegistry.java b/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/internal/E4PreferenceRegistry.java
new file mode 100644
index 0000000..f1702fe
--- /dev/null
+++ b/com.opcoach.e4.preferences/src/com/opcoach/e4/preferences/internal/E4PreferenceRegistry.java
@@ -0,0 +1,322 @@
+/*******************************************************************************
+ * Copyright (c) 2014 OPCoach.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * OPCoach - initial API and implementation
+ *******************************************************************************/
+package com.opcoach.e4.preferences.internal;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.inject.Inject;
+
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtensionRegistry;
+import org.eclipse.core.runtime.preferences.InstanceScope;
+import org.eclipse.e4.core.contexts.ContextInjectionFactory;
+import org.eclipse.e4.core.contexts.IEclipseContext;
+import org.eclipse.e4.core.di.annotations.Creatable;
+import org.eclipse.e4.core.services.contributions.IContributionFactory;
+import org.eclipse.e4.core.services.log.Logger;
+import org.eclipse.jface.preference.FieldEditorPreferencePage;
+import org.eclipse.jface.preference.IPreferenceNode;
+import org.eclipse.jface.preference.IPreferencePage;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.preference.PreferenceManager;
+import org.eclipse.jface.preference.PreferenceNode;
+import org.eclipse.jface.preference.PreferencePage;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Label;
+
+import com.opcoach.e4.preferences.IPreferenceStoreProvider;
+import com.opcoach.e4.preferences.ScopedPreferenceStore;
+
+@Creatable
+public class E4PreferenceRegistry
+{
+
+ public static final String PREFS_PAGE_XP = "com.opcoach.e4.preferences.e4PreferencePages"; // $NON-NLS-1$
+ public static final String PREF_STORE_PROVIDER = "com.opcoach.e4.preferences.e4PreferenceStoreProvider"; // $NON-NLS-1$
+ protected static final String ELMT_PAGE = "page"; // $NON-NLS-1$
+ protected static final String ATTR_ID = "id"; // $NON-NLS-1$
+ protected static final String ATTR_CATEGORY = "category"; // $NON-NLS-1$
+ protected static final String ATTR_CLASS = "class"; // $NON-NLS-1$
+ protected static final String ATTR_NAME = "name"; // $NON-NLS-1$
+
+ protected static final String ATTR_PLUGIN_ID = "pluginId"; // $NON-NLS-1$
+ protected static final String ATTR_ID_IN_WBCONTEXT = "idInWorkbenchContext"; // $NON-NLS-1$
+
+ @Inject
+ protected Logger logger;
+
+ @Inject
+ protected IEclipseContext context;
+
+ @Inject
+ protected IExtensionRegistry registry;
+
+ private PreferenceManager pm = null;
+
+ // A map of (pluginId, { IPreferenceStoreProvider, or key in wbcontext }
+ private Map