1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.print; |
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27 |
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28 import java.io.BufferedReader; |
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29 import java.io.InputStream; |
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30 import java.io.InputStreamReader; |
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31 import java.io.IOException; |
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32 import java.util.ArrayList; |
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33 import java.security.AccessController; |
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34 import java.security.PrivilegedActionException; |
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35 import java.security.PrivilegedExceptionAction; |
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36 import javax.print.DocFlavor; |
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37 import javax.print.MultiDocPrintService; |
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38 import javax.print.PrintService; |
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39 import javax.print.PrintServiceLookup; |
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40 import javax.print.attribute.Attribute; |
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41 import javax.print.attribute.AttributeSet; |
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42 import javax.print.attribute.HashPrintRequestAttributeSet; |
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43 import javax.print.attribute.HashPrintServiceAttributeSet; |
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44 import javax.print.attribute.PrintRequestAttribute; |
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45 import javax.print.attribute.PrintRequestAttributeSet; |
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46 import javax.print.attribute.PrintServiceAttribute; |
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47 import javax.print.attribute.PrintServiceAttributeSet; |
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48 import javax.print.attribute.standard.PrinterName; |
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49 |
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50 public class Win32PrintServiceLookup extends PrintServiceLookup { |
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51 |
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52 private String defaultPrinter; |
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53 private PrintService defaultPrintService; |
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54 private String[] printers; /* excludes the default printer */ |
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55 private PrintService[] printServices; /* includes the default printer */ |
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56 |
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57 static { |
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58 java.security.AccessController.doPrivileged( |
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59 new java.security.PrivilegedAction<Void>() { |
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60 public Void run() { |
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61 System.loadLibrary("awt"); |
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62 return null; |
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63 } |
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64 }); |
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65 } |
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66 |
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67 /* The singleton win32 print lookup service. |
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68 * Code that is aware of this field and wants to use it must first |
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69 * see if its null, and if so instantiate it by calling a method such as |
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70 * javax.print.PrintServiceLookup.defaultPrintService() so that the |
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71 * same instance is stored there. |
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72 */ |
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73 private static Win32PrintServiceLookup win32PrintLUS; |
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74 |
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75 /* Think carefully before calling this. Preferably don't call it. */ |
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76 public static Win32PrintServiceLookup getWin32PrintLUS() { |
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77 if (win32PrintLUS == null) { |
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78 /* This call is internally synchronized. |
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79 * When it returns an instance of this class will have |
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80 * been instantiated - else there's a JDK internal error. |
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81 */ |
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82 PrintServiceLookup.lookupDefaultPrintService(); |
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83 } |
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84 return win32PrintLUS; |
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85 } |
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86 |
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87 public Win32PrintServiceLookup() { |
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88 |
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89 if (win32PrintLUS == null) { |
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90 win32PrintLUS = this; |
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91 |
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92 String osName = AccessController.doPrivileged( |
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93 new sun.security.action.GetPropertyAction("os.name")); |
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94 // There's no capability for Win98 to refresh printers. |
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95 // See "OpenPrinter" for more info. |
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96 if (osName != null && osName.startsWith("Windows 98")) { |
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97 return; |
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98 } |
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99 // start the printer listener thread |
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100 PrinterChangeListener thr = new PrinterChangeListener(); |
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101 thr.setDaemon(true); |
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102 thr.start(); |
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103 } /* else condition ought to never happen! */ |
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104 } |
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105 |
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106 /* Want the PrintService which is default print service to have |
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107 * equality of reference with the equivalent in list of print services |
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108 * This isn't required by the API and there's a risk doing this will |
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109 * lead people to assume its guaranteed. |
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110 */ |
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111 public synchronized PrintService[] getPrintServices() { |
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112 SecurityManager security = System.getSecurityManager(); |
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113 if (security != null) { |
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114 security.checkPrintJobAccess(); |
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115 } |
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116 if (printServices == null) { |
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117 refreshServices(); |
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118 } |
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119 return printServices; |
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120 } |
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121 |
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122 private synchronized void refreshServices() { |
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123 printers = getAllPrinterNames(); |
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124 if (printers == null) { |
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125 // In Windows it is safe to assume no default if printers == null so we |
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126 // don't get the default. |
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127 printServices = new PrintService[0]; |
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128 return; |
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129 } |
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130 |
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131 PrintService[] newServices = new PrintService[printers.length]; |
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132 PrintService defService = getDefaultPrintService(); |
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133 for (int p = 0; p < printers.length; p++) { |
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134 if (defService != null && |
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135 printers[p].equals(defService.getName())) { |
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136 newServices[p] = defService; |
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137 } else { |
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138 if (printServices == null) { |
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139 newServices[p] = new Win32PrintService(printers[p]); |
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140 } else { |
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141 int j; |
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142 for (j = 0; j < printServices.length; j++) { |
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143 if ((printServices[j]!= null) && |
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144 (printers[p].equals(printServices[j].getName()))) { |
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145 newServices[p] = printServices[j]; |
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146 printServices[j] = null; |
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147 break; |
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148 } |
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149 } |
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150 if (j == printServices.length) { |
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151 newServices[p] = new Win32PrintService(printers[p]); |
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152 } |
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153 } |
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154 } |
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155 } |
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156 |
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157 // Look for deleted services and invalidate these |
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158 if (printServices != null) { |
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159 for (int j=0; j < printServices.length; j++) { |
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160 if ((printServices[j] instanceof Win32PrintService) && |
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161 (!printServices[j].equals(defaultPrintService))) { |
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162 ((Win32PrintService)printServices[j]).invalidateService(); |
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163 } |
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164 } |
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165 } |
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166 printServices = newServices; |
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167 } |
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168 |
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169 |
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170 public synchronized PrintService getPrintServiceByName(String name) { |
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171 |
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172 if (name == null || name.equals("")) { |
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173 return null; |
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174 } else { |
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175 /* getPrintServices() is now very fast. */ |
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176 PrintService[] printServices = getPrintServices(); |
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177 for (int i=0; i<printServices.length; i++) { |
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178 if (printServices[i].getName().equals(name)) { |
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179 return printServices[i]; |
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180 } |
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181 } |
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182 return null; |
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183 } |
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184 } |
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185 |
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186 @SuppressWarnings("unchecked") // Cast to Class<PrintServiceAttribute> |
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187 boolean matchingService(PrintService service, |
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188 PrintServiceAttributeSet serviceSet) { |
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189 if (serviceSet != null) { |
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190 Attribute [] attrs = serviceSet.toArray(); |
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191 Attribute serviceAttr; |
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192 for (int i=0; i<attrs.length; i++) { |
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193 serviceAttr |
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194 = service.getAttribute((Class<PrintServiceAttribute>)attrs[i].getCategory()); |
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195 if (serviceAttr == null || !serviceAttr.equals(attrs[i])) { |
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196 return false; |
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197 } |
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198 } |
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199 } |
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200 return true; |
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201 } |
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202 |
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203 public PrintService[] getPrintServices(DocFlavor flavor, |
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204 AttributeSet attributes) { |
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205 |
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206 SecurityManager security = System.getSecurityManager(); |
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207 if (security != null) { |
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208 security.checkPrintJobAccess(); |
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209 } |
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210 PrintRequestAttributeSet requestSet = null; |
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211 PrintServiceAttributeSet serviceSet = null; |
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212 |
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213 if (attributes != null && !attributes.isEmpty()) { |
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214 |
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215 requestSet = new HashPrintRequestAttributeSet(); |
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216 serviceSet = new HashPrintServiceAttributeSet(); |
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217 |
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218 Attribute[] attrs = attributes.toArray(); |
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219 for (int i=0; i<attrs.length; i++) { |
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220 if (attrs[i] instanceof PrintRequestAttribute) { |
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221 requestSet.add(attrs[i]); |
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222 } else if (attrs[i] instanceof PrintServiceAttribute) { |
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223 serviceSet.add(attrs[i]); |
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224 } |
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225 } |
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226 } |
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227 |
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228 /* |
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229 * Special case: If client is asking for a particular printer |
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230 * (by name) then we can save time by getting just that service |
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231 * to check against the rest of the specified attributes. |
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232 */ |
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233 PrintService[] services = null; |
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234 if (serviceSet != null && serviceSet.get(PrinterName.class) != null) { |
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235 PrinterName name = (PrinterName)serviceSet.get(PrinterName.class); |
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236 PrintService service = getPrintServiceByName(name.getValue()); |
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237 if (service == null || !matchingService(service, serviceSet)) { |
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238 services = new PrintService[0]; |
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239 } else { |
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240 services = new PrintService[1]; |
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241 services[0] = service; |
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242 } |
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243 } else { |
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244 services = getPrintServices(); |
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245 } |
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246 |
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247 if (services.length == 0) { |
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248 return services; |
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249 } else { |
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250 ArrayList<PrintService> matchingServices = new ArrayList<>(); |
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251 for (int i=0; i<services.length; i++) { |
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252 try { |
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253 if (services[i]. |
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254 getUnsupportedAttributes(flavor, requestSet) == null) { |
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255 matchingServices.add(services[i]); |
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256 } |
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257 } catch (IllegalArgumentException e) { |
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258 } |
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259 } |
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260 services = new PrintService[matchingServices.size()]; |
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261 return matchingServices.toArray(services); |
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262 } |
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263 } |
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264 |
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265 /* |
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266 * return empty array as don't support multi docs |
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267 */ |
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268 public MultiDocPrintService[] |
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269 getMultiDocPrintServices(DocFlavor[] flavors, |
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270 AttributeSet attributes) { |
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271 SecurityManager security = System.getSecurityManager(); |
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272 if (security != null) { |
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273 security.checkPrintJobAccess(); |
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274 } |
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275 return new MultiDocPrintService[0]; |
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276 } |
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277 |
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278 |
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279 public synchronized PrintService getDefaultPrintService() { |
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280 SecurityManager security = System.getSecurityManager(); |
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281 if (security != null) { |
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282 security.checkPrintJobAccess(); |
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283 } |
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284 |
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285 |
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286 // Windows does not have notification for a change in default |
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287 // so we always get the latest. |
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288 defaultPrinter = getDefaultPrinterName(); |
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289 if (defaultPrinter == null) { |
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290 return null; |
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291 } |
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292 |
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293 if ((defaultPrintService != null) && |
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294 defaultPrintService.getName().equals(defaultPrinter)) { |
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295 |
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296 return defaultPrintService; |
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297 } |
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298 |
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299 // Not the same as default so proceed to get new PrintService. |
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300 |
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301 // clear defaultPrintService |
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302 defaultPrintService = null; |
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303 |
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304 if (printServices != null) { |
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305 for (int j=0; j<printServices.length; j++) { |
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306 if (defaultPrinter.equals(printServices[j].getName())) { |
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307 defaultPrintService = printServices[j]; |
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308 break; |
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309 } |
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310 } |
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311 } |
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312 |
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313 if (defaultPrintService == null) { |
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314 defaultPrintService = new Win32PrintService(defaultPrinter); |
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315 } |
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316 return defaultPrintService; |
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317 } |
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318 |
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319 class PrinterChangeListener extends Thread { |
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320 long chgObj; |
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321 PrinterChangeListener() { |
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322 chgObj = notifyFirstPrinterChange(null); |
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323 } |
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324 |
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325 public void run() { |
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326 if (chgObj != -1) { |
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327 while (true) { |
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328 // wait for configuration to change |
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329 if (notifyPrinterChange(chgObj) != 0) { |
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330 try { |
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331 refreshServices(); |
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332 } catch (SecurityException se) { |
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333 break; |
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334 } |
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335 } else { |
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336 notifyClosePrinterChange(chgObj); |
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337 break; |
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338 } |
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339 } |
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340 } |
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341 } |
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342 } |
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343 |
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344 private native String getDefaultPrinterName(); |
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345 private native String[] getAllPrinterNames(); |
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346 private native long notifyFirstPrinterChange(String printer); |
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347 private native void notifyClosePrinterChange(long chgObj); |
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348 private native int notifyPrinterChange(long chgObj); |
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349 } |
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