package com.tom_roush.pdfbox.pdmodel.common;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import com.tom_roush.pdfbox.cos.COSBase;
import com.tom_roush.pdfbox.cos.COSBoolean;
import com.tom_roush.pdfbox.cos.COSDictionary;
import com.tom_roush.pdfbox.cos.COSFloat;
import com.tom_roush.pdfbox.cos.COSInteger;
import com.tom_roush.pdfbox.cos.COSName;
import com.tom_roush.pdfbox.cos.COSString;
/**
* This is a Map that will automatically sync the contents to a COSDictionary.
*
* @author Ben Litchfield
*/
public class COSDictionaryMap<K,V> implements Map<K,V>
{
private final COSDictionary map;
private final Map<K,V> actuals;
/**
* Constructor for this map.
*
* @param actualsMap The map with standard java objects as values.
* @param dicMap The map with COSBase objects as values.
*/
public COSDictionaryMap( Map<K,V> actualsMap, COSDictionary dicMap )
{
actuals = actualsMap;
map = dicMap;
}
/**
* {@inheritDoc}
*/
@Override
public int size()
{
return map.size();
}
/**
* {@inheritDoc}
*/
@Override
public boolean isEmpty()
{
return size() == 0;
}
/**
* {@inheritDoc}
*/
@Override
public boolean containsKey(Object key)
{
return map.keySet().contains( key );
}
/**
* {@inheritDoc}
*/
@Override
public boolean containsValue(Object value)
{
return actuals.containsValue( value );
}
/**
* {@inheritDoc}
*/
@Override
public V get(Object key)
{
return actuals.get( key );
}
/**
* {@inheritDoc}
*/
@Override
public V put(K key, V value)
{
COSObjectable object = (COSObjectable)value;
map.setItem( COSName.getPDFName( (String)key ), object.getCOSObject() );
return actuals.put( key, value );
}
/**
* {@inheritDoc}
*/
@Override
public V remove(Object key)
{
map.removeItem( COSName.getPDFName( (String)key ) );
return actuals.remove( key );
}
/**
* {@inheritDoc}
*/
@Override
public void putAll(Map<? extends K, ? extends V> t)
{
throw new RuntimeException( "Not yet implemented" );
}
/**
* {@inheritDoc}
*/
@Override
public void clear()
{
map.clear();
actuals.clear();
}
/**
* {@inheritDoc}
*/
@Override
public Set<K> keySet()
{
return actuals.keySet();
}
/**
* {@inheritDoc}
*/
@Override
public Collection<V> values()
{
return actuals.values();
}
/**
* {@inheritDoc}
*/
@Override
public Set<Map.Entry<K, V>> entrySet()
{
return Collections.unmodifiableSet(actuals.entrySet());
}
/**
* {@inheritDoc}
*/
@Override
public boolean equals(Object o)
{
boolean retval = false;
if( o instanceof COSDictionaryMap )
{
COSDictionaryMap<K,V> other = (COSDictionaryMap)o;
retval = other.map.equals( this.map );
}
return retval;
}
/**
* {@inheritDoc}
*/
@Override
public String toString()
{
return actuals.toString();
}
/**
* {@inheritDoc}
*/
@Override
public int hashCode()
{
return map.hashCode();
}
/**
* This will take a map<java.lang.String,com.tom_roush.pdfbox.pdmodel.COSObjectable>
* and convert it into a COSDictionary.
*
* @param someMap A map containing COSObjectables
*
* @return A proper COSDictionary
*/
public static COSDictionary convert(Map<String,?> someMap)
{
Iterator<?> iter = someMap.keySet().iterator();
COSDictionary dic = new COSDictionary();
for (Entry<String, ?> entry : someMap.entrySet())
{
String name = entry.getKey();
COSObjectable object = (COSObjectable) entry.getValue();
dic.setItem( COSName.getPDFName( name ), object.getCOSObject() );
}
return dic;
}
/**
* This will take a COS dictionary and convert it into COSDictionaryMap. All cos
* objects will be converted to their primitive form.
*
* @param map The COS mappings.
* @return A standard java map.
* @throws IOException If there is an error during the conversion.
*/
public static COSDictionaryMap<String, Object> convertBasicTypesToMap( COSDictionary map ) throws IOException
{
COSDictionaryMap<String, Object> retval = null;
if( map != null )
{
Map<String, Object> actualMap = new HashMap<String, Object>();
for( COSName key : map.keySet() )
{
COSBase cosObj = map.getDictionaryObject( key );
Object actualObject = null;
if( cosObj instanceof COSString )
{
actualObject = ((COSString)cosObj).getString();
}
else if( cosObj instanceof COSInteger )
{
actualObject = ((COSInteger)cosObj).intValue();
}
else if( cosObj instanceof COSName )
{
actualObject = ((COSName)cosObj).getName();
}
else if( cosObj instanceof COSFloat )
{
actualObject = ((COSFloat)cosObj).floatValue();
}
else if( cosObj instanceof COSBoolean )
{
actualObject = ((COSBoolean)cosObj).getValue() ? Boolean.TRUE : Boolean.FALSE;
}
else
{
throw new IOException( "Error:unknown type of object to convert:" + cosObj );
}
actualMap.put( key.getName(), actualObject );
}
retval = new COSDictionaryMap<String, Object>( actualMap, map );
}
return retval;
}
}