/*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.sun.pdfview.action;
import java.io.IOException;
import com.sun.pdfview.PDFObject;
import com.sun.pdfview.PDFParseException;
/**
* The common super-class of all PDF actions.
*/
public class PDFAction {
/** the type of this action */
private String type;
/** the next action or array of actions */
private PDFObject next;
/** Creates a new instance of PDFAction */
public PDFAction(String type) {
this.type = type;
}
/**
* Get an action of the appropriate type from a PDFObject
*
* @param obj the PDF object containing the action to parse
* @param root the root of the PDF object tree
*/
public static PDFAction getAction(PDFObject obj, PDFObject root)
throws IOException
{
// figure out the action type
PDFObject typeObj = obj.getDictRef("S");
if (typeObj == null) {
throw new PDFParseException("No action type in object: " + obj);
}
// create the action based on the type
PDFAction action = null;
String type = typeObj.getStringValue();
if (type.equals("GoTo")) {
action = new GoToAction(obj, root);
}else if(type.equals("GoToE")){
action = new GoToEAction(obj, root);
}else if(type.equals("GoToR")){
action = new GoToRAction(obj, root);
}else if(type.equals("URI")){
action = new UriAction(obj, root);
}else if(type.equals("Launch")){
action = new LaunchAction(obj, root);
}
else {
/** [JK FIXME: Implement other action types! ] */
throw new PDFParseException("Unknown Action type: " + type);
}
// figure out if there is a next action
PDFObject nextObj = obj.getDictRef("Next");
if (nextObj != null) {
action.setNext(nextObj);
}
// return the action
return action;
}
/**
* Get the type of this action
*/
public String getType() {
return this.type;
}
/**
* Get the next action or array of actions
*/
public PDFObject getNext() {
return this.next;
}
/**
* Set the next action or array of actions
*/
public void setNext(PDFObject next) {
this.next = next;
}
}