SettingsSection.java

/*
  SettingsSection.java

  (c) 2010-2011 Edward Swartz

  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
 */
package ejs.base.settings;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import ejs.base.properties.IProperty;


/**
 * @author ejs
 *
 */
public class SettingsSection implements ISettingSection {

	private Map<String, Object> data;
	private final String name;

	/**
	 * 
	 */
	public SettingsSection(String name) {
		this.name = name;
		data = new TreeMap<String, Object>();
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.settings.ISettingSection#getName()
	 */
	@Override
	public String getName() {
		return name;
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return "SettingsSection: " + data.toString();
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#addNewSection(java.lang.String)
	 */
	public ISettingSection addSection(String name) {
		SettingsSection newSection = new SettingsSection(name);
		data.put(name, newSection);
		return newSection;
	}

	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getSection(java.lang.String)
	 */
	public ISettingSection getSection(String sectionName) {
		Object value = data.get(sectionName);
		if (value instanceof ISettingSection)
			return (ISettingSection) value;
		return null;
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.settings.ISettingSection#findOrAddSection(java.lang.String)
	 */
	public ISettingSection findOrAddSection(String sectionName) {
		ISettingSection section = getSection(sectionName);
		if (section != null)
			return section;
		return addSection(sectionName);
	}

	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getSections()
	 */
	public String[] getSectionNames() {
		List<String> names = new ArrayList<String>();
		for (Map.Entry<String, Object> entry : data.entrySet()) {
			if (entry.getValue() instanceof ISettingSection)
				names.add(entry.getKey());
		}
		return (String[]) names.toArray(new String[names.size()]);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.settings.ISettingSection#getSections()
	 */
	public ISettingSection[] getSections() {
		List<ISettingSection> sections = new ArrayList<ISettingSection>();
		for (Map.Entry<String, Object> entry : data.entrySet()) {
			if (entry.getValue() instanceof ISettingSection)
				sections.add((ISettingSection) entry.getValue());
		}
		return (ISettingSection[]) sections.toArray(new ISettingSection[sections.size()]);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.settings.ISettingSection#getSettingNames()
	 */
	public String[] getSettingNames() {
		return data.keySet().toArray(new String[data.size()]);
	}

	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#get(java.lang.String)
	 */
	public String get(String name) {
		Object value = data.get(name);
		if (value == null)
			return null;
		return value.toString();
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getBool(java.lang.String)
	 */
	public boolean getBoolean(String name) {
		Object value = data.get(name);
		if (value == null)
			return false;
		if (value instanceof Boolean)
			return (Boolean) value;
		return Boolean.TRUE.toString().equals(value.toString());
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getInt(java.lang.String)
	 */
	public int getInt(String name) {
		Object val = data.get(name);
		if (val == null)
			return 0;
		if (val instanceof Number)
			return ((Number) val).intValue();
		
		try {
			return Integer.parseInt(val.toString());
		} catch (NumberFormatException e) {
			return 0;
		}
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getDouble(java.lang.String)
	 */
	public double getDouble(String name) {
		Object val = data.get(name);
		if (val == null)
			return 0;
		if (val instanceof Number)
			return ((Number) val).doubleValue();
		
		try {
			return Double.parseDouble(val.toString());
		} catch (NumberFormatException e) {
			return 0;
		}
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#getArray(java.lang.String)
	 */
	public String[] getArray(String name) {
		Object value = data.get(name);
		if (value instanceof String[])
			return (String[]) value;
		return null;
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.settings.ISettingSection#getObject(java.lang.String)
	 */
	public Object getObject(String name) {
		return data.get(name);
	}

	private void doPut(String name, Object value) {
		if (value != null)
			data.put(name, value);
		else
			data.remove(name);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#put(java.lang.String, java.lang.String)
	 */
	public void put(String name, String value) {
		doPut(name, value);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#put(java.lang.String, boolean)
	 */
	public void put(String name, boolean value) {
		doPut(name, value);		
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#put(java.lang.String, double)
	 */
	public void put(String name, double value) {
		doPut(name, value);		
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#put(java.lang.String, int)
	 */
	public void put(String name, int value) {
		doPut(name, value);		
	}
	/* (non-Javadoc)
	 * @see v9t9.base.core.properties.IPropertyStorage#put(java.lang.String, java.lang.String[])
	 */
	public void put(String name, String[] array) {
		doPut(name, array);	
	}

	/* (non-Javadoc)
	 * @see v9t9.base.core.settings.ISettingSection#put(java.lang.String, java.lang.Object)
	 */
	public void put(String name, Object value) {
		doPut(name, value);	
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Iterable#iterator()
	 */
	public Iterator<SettingEntry> iterator() {
		return new Iterator<SettingEntry>() {
			Iterator<Map.Entry<String, Object>> innerIter = data.entrySet().iterator();
			
			public boolean hasNext() {
				return innerIter.hasNext();
			}

			public SettingEntry next() {
				Map.Entry<String, Object> e = innerIter.next();
				SettingEntry entry = new SettingEntry();
				entry.name = e.getKey();
				entry.value = e.getValue();
				if (entry.value instanceof IProperty)
					entry.value = ((IProperty) entry.value).getValue();

				if (entry.value instanceof Boolean)
					entry.type = Type.Boolean;
				else if (entry.value instanceof Integer)
					entry.type = Type.Int;
				else if (entry.value instanceof Double)
					entry.type = Type.Double;
				else if (entry.value instanceof String)
					entry.type = Type.String;
				else if (entry.value instanceof String[])
					entry.type = Type.StringArray;
				else if (entry.value instanceof ISettingSection)
					entry.type = Type.Section;
				else {
					entry.type = Type.Object;
				}
				return entry;
			}

			public void remove() {
				innerIter.remove();
			}
			
		};
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.settings.ISettingSection#addEntry(ejs.base.settings.ISettingSection.SettingEntry)
	 */
	@Override
	public void addEntry(SettingEntry entry) {
		if (entry.value instanceof ISettingSection)
			addSection(entry.name).mergeFrom((ISettingSection) entry.value);
		else
			put(entry.name, entry.value);
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.settings.ISettingSection#mergeFrom(ejs.base.settings.ISettingSection)
	 */
	@Override
	public void mergeFrom(ISettingSection other) {
		for (SettingEntry entry : other) {
			addEntry(entry);
		}		
	}
}