/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.pdmodel.interactive.annotation;
import java.io.IOException;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.interactive.action.PDActionFactory;
import org.apache.pdfbox.pdmodel.interactive.action.type.PDAction;
import org.apache.pdfbox.pdmodel.interactive.action.type.PDActionURI;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination.PDDestination;
/**
* This is the class that represents a link annotation.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
* @author Paul King
* @version $Revision: 1.3 $
*/
public class PDAnnotationLink extends PDAnnotation
{
/**
* Constant values of the Text as defined in the PDF 1.6 reference Table 8.19.
*/
public static final String HIGHLIGHT_MODE_NONE = "N";
/**
* Constant values of the Text as defined in the PDF 1.6 reference Table 8.19.
*/
public static final String HIGHLIGHT_MODE_INVERT = "I";
/**
* Constant values of the Text as defined in the PDF 1.6 reference Table 8.19.
*/
public static final String HIGHLIGHT_MODE_OUTLINE = "O";
/**
* Constant values of the Text as defined in the PDF 1.6 reference Table 8.19.
*/
public static final String HIGHLIGHT_MODE_PUSH = "P";
/**
* The type of annotation.
*/
public static final String SUB_TYPE = "Link";
/**
* Constructor.
*/
public PDAnnotationLink()
{
super();
getDictionary().setItem( COSName.SUBTYPE, COSName.getPDFName( SUB_TYPE ) );
}
/**
* Creates a Link annotation from a COSDictionary, expected to be
* a correct object definition.
*
* @param field the PDF objet to represent as a field.
*/
public PDAnnotationLink(COSDictionary field)
{
super( field );
}
/**
* Get the action to be performed when this annotation is to be activated.
*
* @return The action to be performed when this annotation is activated.
*
* TODO not all annotations have an A entry
*/
public PDAction getAction()
{
COSDictionary action = (COSDictionary)
this.getDictionary().getDictionaryObject( COSName.A );
return PDActionFactory.createAction( action );
}
/**
* Set the annotation action.
* As of PDF 1.6 this is only used for Widget Annotations
* @param action The annotation action.
* TODO not all annotations have an A entry
*/
public void setAction( PDAction action )
{
this.getDictionary().setItem( COSName.A, action );
}
/**
* This will set the border style dictionary, specifying the width and dash
* pattern used in drawing the line.
*
* @param bs the border style dictionary to set.
* TODO not all annotations may have a BS entry
*
*/
public void setBorderStyle( PDBorderStyleDictionary bs )
{
this.getDictionary().setItem( "BS", bs);
}
/**
* This will retrieve the border style dictionary, specifying the width and
* dash pattern used in drawing the line.
*
* @return the border style dictionary.
* TODO not all annotations may have a BS entry
*/
public PDBorderStyleDictionary getBorderStyle()
{
COSDictionary bs = (COSDictionary) this.getDictionary().getItem(
COSName.getPDFName( "BS" ) );
if (bs != null)
{
return new PDBorderStyleDictionary( bs );
}
else
{
return null;
}
}
/**
* Get the destination to be displayed when the annotation is activated. Either
* this or the A should be set but not both.
*
* @return The destination for this annotation.
*
* @throws IOException If there is an error creating the destination.
*/
public PDDestination getDestination() throws IOException
{
COSBase base = getDictionary().getDictionaryObject( COSName.DEST );
PDDestination retval = PDDestination.create( base );
return retval;
}
/**
* The new destination value.
*
* @param dest The updated destination.
*/
public void setDestination( PDDestination dest )
{
getDictionary().setItem( COSName.DEST, dest );
}
/**
* Set the highlight mode for when the mouse is depressed.
* See the HIGHLIGHT_MODE_XXX constants.
*
* @return The string representation of the highlight mode.
*/
public String getHighlightMode()
{
return getDictionary().getNameAsString( COSName.H, HIGHLIGHT_MODE_INVERT );
}
/**
* Set the highlight mode. See the HIGHLIGHT_MODE_XXX constants.
*
* @param mode The new highlight mode.
*/
public void setHighlightMode( String mode )
{
getDictionary().setName( COSName.H, mode );
}
/**
* This will set the previous URI action, in case it
* needs to be retrieved at later date.
*
* @param pa The previous URI.
*/
public void setPreviousURI( PDActionURI pa )
{
getDictionary().setItem( "PA", pa );
}
/**
* This will set the previous URI action, in case it's
* needed.
*
* @return The previous URI.
*/
public PDActionURI getPreviousURI()
{
COSDictionary pa = (COSDictionary) getDictionary().getDictionaryObject("PA");
if ( pa != null )
{
return new PDActionURI( pa );
}
else
{
return null;
}
}
/**
* This will set the set of quadpoints which encompass the areas of this
* annotation which will activate.
*
* @param quadPoints
* an array representing the set of area covered.
*/
public void setQuadPoints( float[] quadPoints )
{
COSArray newQuadPoints = new COSArray();
newQuadPoints.setFloatArray( quadPoints );
getDictionary().setItem( "QuadPoints", newQuadPoints );
}
/**
* This will retrieve the set of quadpoints which encompass the areas of
* this annotation which will activate.
*
* @return An array of floats representing the quad points.
*/
public float[] getQuadPoints()
{
COSArray quadPoints = (COSArray) getDictionary().getDictionaryObject( "QuadPoints" );
if (quadPoints != null)
{
return quadPoints.toFloatArray();
}
else
{
return null; // Should never happen as this is a required item
}
}
}