| /* CupsPrintServiceLookup.java -- Implementation based on CUPS |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.print; |
| |
| import gnu.javax.print.ipp.IppException; |
| |
| import java.util.ArrayList; |
| |
| import javax.print.DocFlavor; |
| import javax.print.MultiDocPrintService; |
| import javax.print.PrintService; |
| import javax.print.PrintServiceLookup; |
| import javax.print.attribute.Attribute; |
| import javax.print.attribute.AttributeSet; |
| |
| /** |
| * The platform default implementation based on CUPS. |
| * |
| * @author Wolfgang Baer (WBaer@gmx.de) |
| */ |
| public class CupsPrintServiceLookup extends PrintServiceLookup |
| { |
| private CupsServer server; |
| |
| /** |
| * Default constructor checking security access. |
| */ |
| public CupsPrintServiceLookup() |
| { |
| // security |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) |
| sm.checkPrintJobAccess(); |
| |
| // use the localhost cups server |
| server = new CupsServer(null, null); |
| } |
| |
| /** |
| * This is the printer marked as default in CUPS. |
| * |
| * @return The default lookup service or |
| * <code>null</code> if there is no default. |
| */ |
| public PrintService getDefaultPrintService() |
| { |
| try |
| { |
| return server.getDefaultPrinter(); |
| } |
| catch (IppException e) |
| { |
| // if discovery fails treat as if there is none |
| return null; |
| } |
| } |
| |
| /** |
| * All printers and printer classes of the CUPS server are checked. |
| * If flavors or attributes are null the constraint is not used. |
| * |
| * @param flavors the document flavors which have to be supported. |
| * @param attributes the attributes which have to be supported. |
| * |
| * @return The multidoc print services of the implementing lookup service |
| * for the given parameters, or an array of length 0 if none is available. |
| */ |
| public MultiDocPrintService[] getMultiDocPrintServices(DocFlavor[] flavors, |
| AttributeSet attributes) |
| { |
| ArrayList result = new ArrayList(); |
| PrintService[] services = getPrintServices(); |
| |
| for (int i=0; i < services.length; i++) |
| { |
| if (checkMultiDocPrintService(flavors, attributes, services[i])) |
| result.add(services[i]); |
| } |
| |
| return (MultiDocPrintService[]) result.toArray( |
| new MultiDocPrintService[result.size()]); |
| } |
| |
| /** |
| * These are all printers and printer classes of the CUPS server. |
| * |
| * @return All known print services regardless of supported features, |
| * or an array of length 0 if none is available. |
| */ |
| public PrintService[] getPrintServices() |
| { |
| ArrayList result = new ArrayList(); |
| |
| try |
| { |
| result.addAll(server.getAllPrinters()); |
| result.addAll(server.getAllClasses()); |
| } |
| catch (IppException e) |
| { |
| // ignore as this method cannot throw exceptions |
| // if print service discovery fails - bad luck |
| } |
| return (PrintService[]) result.toArray(new PrintService[result.size()]); |
| } |
| |
| |
| /** |
| * All printers and printer classes of the CUPS server are checked. |
| * If flavor or attributes are null the constraint is not used. |
| * |
| * @param flavor the document flavor which has to be supported. |
| * @param attributes the attributes which have to be supported. |
| * |
| * @return The print services of the implementing lookup service |
| * for the given parameters, or an array of length 0 if none is available. |
| */ |
| public PrintService[] getPrintServices(DocFlavor flavor, |
| AttributeSet attributes) |
| { |
| ArrayList result = new ArrayList(); |
| PrintService[] services = getPrintServices(); |
| |
| for (int i=0; i < services.length; i++) |
| { |
| if (checkPrintService(flavor, attributes, services[i])) |
| result.add(services[i]); |
| } |
| |
| return (PrintService[]) result.toArray(new PrintService[result.size()]); |
| } |
| |
| /** |
| * Checks the given print service - own method so it can be used also |
| * to check application registered print services from PrintServiceLookup. |
| * |
| * @param flavor the document flavor which has to be supported. |
| * @param attributes the attributes which have to be supported. |
| * @param service the service to check |
| * |
| * @return <code>true</code> if all constraints match, <code>false</code> |
| * otherwise. |
| */ |
| public boolean checkPrintService(DocFlavor flavor, AttributeSet attributes, |
| PrintService service) |
| { |
| boolean allAttributesSupported = true; |
| if (flavor == null || service.isDocFlavorSupported(flavor)) |
| { |
| if (attributes == null || attributes.size() == 0) |
| return allAttributesSupported; |
| |
| Attribute[] atts = attributes.toArray(); |
| for (int i = 0; i < atts.length; i++) |
| { |
| if (! service.isAttributeCategorySupported(atts[i].getCategory())) |
| { |
| allAttributesSupported = false; |
| break; |
| } |
| } |
| return allAttributesSupported; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Checks the given print service - own method so it can be used also |
| * to check application registered print services from PrintServiceLookup. |
| * |
| * @param flavors the document flavors which have to be supported. |
| * @param attributes the attributes which have to be supported. |
| * @param service the service to check |
| * |
| * @return <code>true</code> if all constraints match, <code>false</code> |
| * otherwise. |
| */ |
| public boolean checkMultiDocPrintService(DocFlavor[] flavors, |
| AttributeSet attributes, PrintService service) |
| { |
| if (service instanceof MultiDocPrintService) |
| { |
| boolean allFlavorsSupported = true; |
| boolean allAttributesSupported = true; |
| |
| if (flavors == null || flavors.length != 0) |
| allFlavorsSupported = true; |
| else |
| { |
| for (int k = 0; k < flavors.length; k++) |
| { |
| if (! service.isDocFlavorSupported(flavors[k])) |
| { |
| allFlavorsSupported = false; |
| break; |
| } |
| } |
| } |
| |
| if (attributes == null || attributes.size() == 0) |
| allAttributesSupported = true; |
| else |
| { |
| Attribute[] atts = attributes.toArray(); |
| for (int j = 0; j < atts.length; j++) |
| { |
| if (! service.isAttributeCategorySupported( |
| atts[j].getCategory())) |
| { |
| allAttributesSupported = false; |
| break; |
| } |
| } |
| } |
| |
| if (allAttributesSupported && allFlavorsSupported) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } |