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/* * @(#)DocPrintJob.java 1.12 06/04/07 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.print; import javax.print.attribute.AttributeSet; import javax.print.attribute.PrintJobAttributeSet; import javax.print.attribute.PrintRequestAttributeSet; import javax.print.event.PrintJobAttributeListener; import javax.print.event.PrintJobListener; import javax.print.PrintException; /** * * This interface represents a print job that can print a specified * document with a set of job attributes. An object implementing * this interface is obtained from a print service. * */ public interface DocPrintJob { /** * Determines the {@link PrintService} object to which this print job * object is bound. * * @return <code>PrintService</code> object. * */ public PrintService getPrintService(); /** * Obtains this Print Job's set of printing attributes. * The returned attribute set object is unmodifiable. * The returned attribute set object is a "snapshot" of this Print Job's * attribute set at the time of the {@link #getAttributes()} method * call; that is, the returned attribute set's object's contents will * not be updated if this Print Job's attribute set's contents change * in the future. To detect changes in attribute values, call * <code>getAttributes()</code> again and compare the new attribute * set to the previous attribute set; alternatively, register a * listener for print job events. * The returned value may be an empty set but should not be null. * @return the print job attributes */ public PrintJobAttributeSet getAttributes(); /** * Registers a listener for event occurring during this print job. * If listener is null, no exception is thrown and no action is * performed. * If listener is already registered, it will be registered again. * @see #removePrintJobListener * * @param listener The object implementing the listener interface * */ public void addPrintJobListener(PrintJobListener listener); /** * Removes a listener from this print job. * This method performs no function, nor does it throw an exception, * if the listener specified by the argument was not previously added * to this component. If listener is null, no exception is thrown and * no action is performed. If a listener was registered more than once * only one of the registrations will be removed. * @see #addPrintJobListener * * @param listener The object implementing the listener interface */ public void removePrintJobListener(PrintJobListener listener); /** * Registers a listener for changes in the specified attributes. * If listener is null, no exception is thrown and no action is * performed. * To determine the attribute updates that may be reported by this job, * a client can call <code>getAttributes()</code> and identify the * subset that are interesting and likely to be reported to the * listener. Clients expecting to be updated about changes in a * specific job attribute should verify it is in that set, but * updates about an attribute will be made only if it changes and this * is detected by the job. Also updates may be subject to batching * by the job. To minimise overhead in print job processing it is * recommended to listen on only that subset of attributes which * are likely to change. * If the specified set is empty no attribute updates will be reported * to the listener. * If the attribute set is null, then this means to listen on all * dynamic attributes that the job supports. This may result in no * update notifications if a job can not report any attribute updates. * * If listener is already registered, it will be registered again. * @see #removePrintJobAttributeListener * * @param listener The object implementing the listener interface * @param attributes The attributes to listen on, or null to mean * all attributes that can change, as determined by the job. */ public void addPrintJobAttributeListener( PrintJobAttributeListener listener, PrintJobAttributeSet attributes); /** * Removes an attribute listener from this print job. * This method performs no function, nor does it throw an exception, * if the listener specified by the argument was not previously added * to this component. If the listener is null, no exception is thrown * and no action is performed. * If a listener is registered more than once, even for a different * set of attributes, no guarantee is made which listener is removed. * @see #addPrintJobAttributeListener * * @param listener The object implementing the listener interface * */ public void removePrintJobAttributeListener( PrintJobAttributeListener listener); /** * Prints a document with the specified job attributes. * This method should only be called once for a given print job. * Calling it again will not result in a new job being spooled to * the printer. The service implementation will define policy * for service interruption and recovery. * When the print method returns, printing may not yet have completed as * printing may happen asynchronously, perhaps in a different thread. * Application clients which want to monitor the success or failure * should register a PrintJobListener. * <p> * Print service implementors should close any print data streams (ie * Reader or InputStream implementations) that they obtain * from the client doc. Robust clients may still wish to verify this. * An exception is always generated if a <code>DocFlavor</code> cannot * be printed. * * @param doc The document to be printed. If must be a flavor * supported by this PrintJob. * * @param attributes The job attributes to be applied to this print job. * If this parameter is null then the default attributes are used. * @throws PrintException The exception additionally may implement * an interface that more precisely describes the cause of the * exception * <ul> * <li>FlavorException. * If the document has a flavor not supported by this print job. * <li>AttributeException. * If one or more of the attributes are not valid for this print job. * </ul> */ public void print(Doc doc, PrintRequestAttributeSet attributes) throws PrintException; }