J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.print; |
| 27 | |
| 28 | import java.io.BufferedReader; |
| 29 | import java.io.InputStream; |
| 30 | import java.io.InputStreamReader; |
| 31 | import java.io.IOException; |
| 32 | import java.util.ArrayList; |
| 33 | import java.security.AccessController; |
| 34 | import java.security.PrivilegedActionException; |
| 35 | import java.security.PrivilegedExceptionAction; |
| 36 | import javax.print.DocFlavor; |
| 37 | import javax.print.MultiDocPrintService; |
| 38 | import javax.print.PrintService; |
| 39 | import javax.print.PrintServiceLookup; |
| 40 | import javax.print.attribute.Attribute; |
| 41 | import javax.print.attribute.AttributeSet; |
| 42 | import javax.print.attribute.HashPrintRequestAttributeSet; |
| 43 | import javax.print.attribute.HashPrintServiceAttributeSet; |
| 44 | import javax.print.attribute.PrintRequestAttribute; |
| 45 | import javax.print.attribute.PrintRequestAttributeSet; |
| 46 | import javax.print.attribute.PrintServiceAttribute; |
| 47 | import javax.print.attribute.PrintServiceAttributeSet; |
| 48 | import javax.print.attribute.standard.PrinterName; |
| 49 | |
| 50 | public class Win32PrintServiceLookup extends PrintServiceLookup { |
| 51 | |
| 52 | private String defaultPrinter; |
| 53 | private PrintService defaultPrintService; |
| 54 | private String[] printers; /* excludes the default printer */ |
| 55 | private PrintService[] printServices; /* includes the default printer */ |
| 56 | |
| 57 | static { |
| 58 | java.security.AccessController.doPrivileged( |
| 59 | new sun.security.action.LoadLibraryAction("awt")); |
| 60 | } |
| 61 | |
| 62 | /* The singleton win32 print lookup service. |
| 63 | * Code that is aware of this field and wants to use it must first |
| 64 | * see if its null, and if so instantiate it by calling a method such as |
| 65 | * javax.print.PrintServiceLookup.defaultPrintService() so that the |
| 66 | * same instance is stored there. |
| 67 | */ |
| 68 | private static Win32PrintServiceLookup win32PrintLUS; |
| 69 | |
| 70 | /* Think carefully before calling this. Preferably don't call it. */ |
| 71 | public static Win32PrintServiceLookup getWin32PrintLUS() { |
| 72 | if (win32PrintLUS == null) { |
| 73 | /* This call is internally synchronized. |
| 74 | * When it returns an instance of this class will have |
| 75 | * been instantiated - else there's a JDK internal error. |
| 76 | */ |
| 77 | PrintServiceLookup.lookupDefaultPrintService(); |
| 78 | } |
| 79 | return win32PrintLUS; |
| 80 | } |
| 81 | |
| 82 | public Win32PrintServiceLookup() { |
| 83 | |
| 84 | if (win32PrintLUS == null) { |
| 85 | win32PrintLUS = this; |
| 86 | |
| 87 | String osName = AccessController.doPrivileged( |
| 88 | new sun.security.action.GetPropertyAction("os.name")); |
| 89 | // There's no capability for Win98 to refresh printers. |
| 90 | // See "OpenPrinter" for more info. |
| 91 | if (osName != null && osName.startsWith("Windows 98")) { |
| 92 | return; |
| 93 | } |
| 94 | // start the printer listener thread |
| 95 | PrinterChangeListener thr = new PrinterChangeListener(); |
| 96 | thr.setDaemon(true); |
| 97 | thr.start(); |
| 98 | } /* else condition ought to never happen! */ |
| 99 | } |
| 100 | |
| 101 | /* Want the PrintService which is default print service to have |
| 102 | * equality of reference with the equivalent in list of print services |
| 103 | * This isn't required by the API and there's a risk doing this will |
| 104 | * lead people to assume its guaranteed. |
| 105 | */ |
| 106 | public synchronized PrintService[] getPrintServices() { |
| 107 | SecurityManager security = System.getSecurityManager(); |
| 108 | if (security != null) { |
| 109 | security.checkPrintJobAccess(); |
| 110 | } |
| 111 | if (printServices == null) { |
| 112 | refreshServices(); |
| 113 | } |
| 114 | return printServices; |
| 115 | } |
| 116 | |
| 117 | private synchronized void refreshServices() { |
| 118 | printers = getAllPrinterNames(); |
| 119 | if (printers == null) { |
| 120 | // In Windows it is safe to assume no default if printers == null so we |
| 121 | // don't get the default. |
| 122 | printServices = new PrintService[0]; |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | PrintService[] newServices = new PrintService[printers.length]; |
| 127 | PrintService defService = getDefaultPrintService(); |
| 128 | for (int p = 0; p < printers.length; p++) { |
| 129 | if (defService != null && |
| 130 | printers[p].equals(defService.getName())) { |
| 131 | newServices[p] = defService; |
| 132 | } else { |
| 133 | if (printServices == null) { |
| 134 | newServices[p] = new Win32PrintService(printers[p]); |
| 135 | } else { |
| 136 | int j; |
| 137 | for (j = 0; j < printServices.length; j++) { |
| 138 | if ((printServices[j]!= null) && |
| 139 | (printers[p].equals(printServices[j].getName()))) { |
| 140 | newServices[p] = printServices[j]; |
| 141 | printServices[j] = null; |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | if (j == printServices.length) { |
| 146 | newServices[p] = new Win32PrintService(printers[p]); |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | // Look for deleted services and invalidate these |
| 153 | if (printServices != null) { |
| 154 | for (int j=0; j < printServices.length; j++) { |
| 155 | if ((printServices[j] instanceof Win32PrintService) && |
| 156 | (!printServices[j].equals(defaultPrintService))) { |
| 157 | ((Win32PrintService)printServices[j]).invalidateService(); |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | printServices = newServices; |
| 162 | } |
| 163 | |
| 164 | |
| 165 | public synchronized PrintService getPrintServiceByName(String name) { |
| 166 | |
| 167 | if (name == null || name.equals("")) { |
| 168 | return null; |
| 169 | } else { |
| 170 | /* getPrintServices() is now very fast. */ |
| 171 | PrintService[] printServices = getPrintServices(); |
| 172 | for (int i=0; i<printServices.length; i++) { |
| 173 | if (printServices[i].getName().equals(name)) { |
| 174 | return printServices[i]; |
| 175 | } |
| 176 | } |
| 177 | return null; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | boolean matchingService(PrintService service, |
| 182 | PrintServiceAttributeSet serviceSet) { |
| 183 | if (serviceSet != null) { |
| 184 | Attribute [] attrs = serviceSet.toArray(); |
| 185 | Attribute serviceAttr; |
| 186 | for (int i=0; i<attrs.length; i++) { |
| 187 | serviceAttr |
| 188 | = service.getAttribute((Class<PrintServiceAttribute>)attrs[i].getCategory()); |
| 189 | if (serviceAttr == null || !serviceAttr.equals(attrs[i])) { |
| 190 | return false; |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | return true; |
| 195 | } |
| 196 | |
| 197 | public PrintService[] getPrintServices(DocFlavor flavor, |
| 198 | AttributeSet attributes) { |
| 199 | |
| 200 | SecurityManager security = System.getSecurityManager(); |
| 201 | if (security != null) { |
| 202 | security.checkPrintJobAccess(); |
| 203 | } |
| 204 | PrintRequestAttributeSet requestSet = null; |
| 205 | PrintServiceAttributeSet serviceSet = null; |
| 206 | |
| 207 | if (attributes != null && !attributes.isEmpty()) { |
| 208 | |
| 209 | requestSet = new HashPrintRequestAttributeSet(); |
| 210 | serviceSet = new HashPrintServiceAttributeSet(); |
| 211 | |
| 212 | Attribute[] attrs = attributes.toArray(); |
| 213 | for (int i=0; i<attrs.length; i++) { |
| 214 | if (attrs[i] instanceof PrintRequestAttribute) { |
| 215 | requestSet.add(attrs[i]); |
| 216 | } else if (attrs[i] instanceof PrintServiceAttribute) { |
| 217 | serviceSet.add(attrs[i]); |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | /* |
| 223 | * Special case: If client is asking for a particular printer |
| 224 | * (by name) then we can save time by getting just that service |
| 225 | * to check against the rest of the specified attributes. |
| 226 | */ |
| 227 | PrintService[] services = null; |
| 228 | if (serviceSet != null && serviceSet.get(PrinterName.class) != null) { |
| 229 | PrinterName name = (PrinterName)serviceSet.get(PrinterName.class); |
| 230 | PrintService service = getPrintServiceByName(name.getValue()); |
| 231 | if (service == null || !matchingService(service, serviceSet)) { |
| 232 | services = new PrintService[0]; |
| 233 | } else { |
| 234 | services = new PrintService[1]; |
| 235 | services[0] = service; |
| 236 | } |
| 237 | } else { |
| 238 | services = getPrintServices(); |
| 239 | } |
| 240 | |
| 241 | if (services.length == 0) { |
| 242 | return services; |
| 243 | } else { |
| 244 | ArrayList matchingServices = new ArrayList(); |
| 245 | for (int i=0; i<services.length; i++) { |
| 246 | try { |
| 247 | if (services[i]. |
| 248 | getUnsupportedAttributes(flavor, requestSet) == null) { |
| 249 | matchingServices.add(services[i]); |
| 250 | } |
| 251 | } catch (IllegalArgumentException e) { |
| 252 | } |
| 253 | } |
| 254 | services = new PrintService[matchingServices.size()]; |
| 255 | return (PrintService[])matchingServices.toArray(services); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * return empty array as don't support multi docs |
| 261 | */ |
| 262 | public MultiDocPrintService[] |
| 263 | getMultiDocPrintServices(DocFlavor[] flavors, |
| 264 | AttributeSet attributes) { |
| 265 | SecurityManager security = System.getSecurityManager(); |
| 266 | if (security != null) { |
| 267 | security.checkPrintJobAccess(); |
| 268 | } |
| 269 | return new MultiDocPrintService[0]; |
| 270 | } |
| 271 | |
| 272 | |
| 273 | public synchronized PrintService getDefaultPrintService() { |
| 274 | SecurityManager security = System.getSecurityManager(); |
| 275 | if (security != null) { |
| 276 | security.checkPrintJobAccess(); |
| 277 | } |
| 278 | |
| 279 | |
| 280 | // Windows does not have notification for a change in default |
| 281 | // so we always get the latest. |
| 282 | defaultPrinter = getDefaultPrinterName(); |
| 283 | if (defaultPrinter == null) { |
| 284 | return null; |
| 285 | } |
| 286 | |
| 287 | if ((defaultPrintService != null) && |
| 288 | defaultPrintService.getName().equals(defaultPrinter)) { |
| 289 | |
| 290 | return defaultPrintService; |
| 291 | } |
| 292 | |
| 293 | // Not the same as default so proceed to get new PrintService. |
| 294 | |
| 295 | // clear defaultPrintService |
| 296 | defaultPrintService = null; |
| 297 | |
| 298 | if (printServices != null) { |
| 299 | for (int j=0; j<printServices.length; j++) { |
| 300 | if (defaultPrinter.equals(printServices[j].getName())) { |
| 301 | defaultPrintService = printServices[j]; |
| 302 | break; |
| 303 | } |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | if (defaultPrintService == null) { |
| 308 | defaultPrintService = new Win32PrintService(defaultPrinter); |
| 309 | } |
| 310 | return defaultPrintService; |
| 311 | } |
| 312 | |
| 313 | class PrinterChangeListener extends Thread { |
| 314 | long chgObj; |
| 315 | PrinterChangeListener() { |
| 316 | chgObj = notifyFirstPrinterChange(null); |
| 317 | } |
| 318 | |
| 319 | public void run() { |
| 320 | if (chgObj != -1) { |
| 321 | while (true) { |
| 322 | // wait for configuration to change |
| 323 | if (notifyPrinterChange(chgObj) != 0) { |
| 324 | try { |
| 325 | refreshServices(); |
| 326 | } catch (SecurityException se) { |
| 327 | break; |
| 328 | } |
| 329 | } else { |
| 330 | notifyClosePrinterChange(chgObj); |
| 331 | break; |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | private native String getDefaultPrinterName(); |
| 339 | private native String[] getAllPrinterNames(); |
| 340 | private native long notifyFirstPrinterChange(String printer); |
| 341 | private native void notifyClosePrinterChange(long chgObj); |
| 342 | private native int notifyPrinterChange(long chgObj); |
| 343 | } |