SettingsPreferenceStore.java

/*******************************************************************************
 * Copyright (c) 2005-2010, G. Weirich and Elexis
 * 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:
 *    G. Weirich - initial implementation
 *    
 *******************************************************************************/
package ch.elexis.core.ui.preferences;

import static ch.elexis.core.constants.Preferences.SETTINGS_PREFERENCE_STORE_DEFAULT;

import java.util.LinkedList;

import org.eclipse.core.runtime.preferences.DefaultScope;
import org.eclipse.core.runtime.preferences.IScopeContext;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;

import ch.rgw.io.Settings;

/**
 * Dies ist eine Adapterklasse, die ch.rgw.tools.IO.Settings auf Eclipse-Preferences abbildet. Es
 * sollte keine direkte Verwendung dieser Klasse notwendig sein. Intern wird das localCfg-Feld auf
 * SysSettings und das globalCfg-Feld auf SqlSettings abgebildet
 * 
 * @author Gerry
 */
public class SettingsPreferenceStore implements IPreferenceStore {
	/**
	 * The default context is the context where getDefault and setDefault methods will search. This
	 * context is also used in the search.
	 */
	private IScopeContext defaultContext = null;
	
	Settings base;
	private LinkedList<IPropertyChangeListener> listeners =
		new LinkedList<IPropertyChangeListener>();
	
	/**
	 * Default constructor for the SettingsPreferenceStore. ATTENTION initializers
	 * (org.eclipse.core.runtime.preferences) will not be executed.
	 * 
	 * @param base
	 */
	public SettingsPreferenceStore(Settings base){
		this.base = base;
	}
	
	/**
	 * Constructor for the SettingsPreferenceStore registered initializers
	 * (org.eclipse.core.runtime.preferences) will be executed.
	 * 
	 * @param base
	 * @param pluginId
	 */
	public SettingsPreferenceStore(Settings base, String pluginId){
		this.base = base;
		defaultContext = new DefaultScope();
		defaultContext.getNode(pluginId);
	}
	
	public Settings getBase(){
		return base;
	}
	
	public void flush(){
		base.flush();
	}
	
	public void undo(){
		base.undo();
	}
	
	private void set(String field, String value){
		base.set(field, value);
	}
	
	private String get(String field){
		String z = base.get(field, null);
		if (z == null) {
			z = base.get(field + SETTINGS_PREFERENCE_STORE_DEFAULT, null);
			if (z == null) {
				z = ""; //$NON-NLS-1$
			}
		}
		return z;
	}
	
	public void addPropertyChangeListener(IPropertyChangeListener listener){
		listeners.add(listener);
	}
	
	public boolean contains(String name){
		if (base.get(name, null) == null) {
			return false;
		}
		return true;
	}
	
	public void firePropertyChangeEvent(String name, Object oldValue, Object newValue){
		for (IPropertyChangeListener l : listeners) {
			l.propertyChange(new PropertyChangeEvent(this, name, oldValue, newValue));
		}
	}
	
	public boolean getBoolean(String name){
		String z = get(name);
		if (z.isEmpty()) {
			return false;
		}
		if (z.equals("0")) { //$NON-NLS-1$
			return false;
		}
		if (z.equalsIgnoreCase("FALSE")) { //$NON-NLS-1$
			return false;
		}
		return true;
	}
	
	public boolean getDefaultBoolean(String name){
		return getBoolean(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public double getDefaultDouble(String name){
		return getDouble(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public float getDefaultFloat(String name){
		return getFloat(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public int getDefaultInt(String name){
		return getInt(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public long getDefaultLong(String name){
		return getLong(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public String getDefaultString(String name){
		return getString(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
	}
	
	public double getDouble(String name){
		return Double.parseDouble(get(name));
	}
	
	public float getFloat(String name){
		return Float.parseFloat(get(name));
	}
	
	/**
	 * return an Integer. If the Value is not an Integer ot nonexistent, we return 0 (@see
	 * IPreferenceStore)
	 */
	public int getInt(String name){
		try {
			return Integer.parseInt(get(name));
		} catch (NumberFormatException ne) {
			return 0;
		}
	}
	
	public long getLong(String name){
		return Long.parseLong(get(name));
	}
	
	public String getString(String name){
		return get(name);
	}
	
	public boolean isDefault(String name){
		String def = get(name + SETTINGS_PREFERENCE_STORE_DEFAULT);
		String act = get(name);
		return def.equals(act);
	}
	
	public boolean needsSaving(){
		return base.isDirty();
	}
	
	public void putValue(String name, String value){
		set(name, value);
	}
	
	public void remove(String name){
		base.remove(name);
	}
	
	public void removePropertyChangeListener(IPropertyChangeListener listener){
		listeners.remove(listener);
	}
	
	public void setDefault(String name, double value){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, Double.toString(value));
		
	}
	
	public void setDefault(String name, float value){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, Float.toString(value));
		
	}
	
	public void setDefault(String name, int value){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, Integer.toString(value));
	}
	
	public void setDefault(String name, long value){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, Long.toString(value));
		
	}
	
	public void setDefault(String name, String defaultObject){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, defaultObject);
		
	}
	
	public void setDefault(String name, boolean value){
		set(name + SETTINGS_PREFERENCE_STORE_DEFAULT, Boolean.toString(value));
		
	}
	
	public void setToDefault(String name){
		set(name, get(name + SETTINGS_PREFERENCE_STORE_DEFAULT));
		
	}
	
	public void setValue(String name, double value){
		firePropertyChangeEvent(name, getDouble(name), value);
		set(name, Double.toString(value));
	}
	
	public void setValue(String name, float value){
		firePropertyChangeEvent(name, getFloat(name), value);
		set(name, Float.toString(value));
		
	}
	
	public void setValue(String name, int value){
		firePropertyChangeEvent(name, getInt(name), value);
		set(name, Integer.toString(value));
	}
	
	public void setValue(String name, long value){
		firePropertyChangeEvent(name, getLong(name), value);
		set(name, Long.toString(value));
		
	}
	
	public void setValue(String name, String value){
		firePropertyChangeEvent(name, getString(name), value);
		set(name, value);
	}
	
	public void setValue(String name, boolean value){
		firePropertyChangeEvent(name, getBoolean(name), value);
		set(name, Boolean.toString(value));
	}
}