J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 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.awt.X11; |
| 27 | |
| 28 | import java.util.*; |
| 29 | import sun.misc.Unsafe; |
| 30 | |
| 31 | public class WindowPropertyGetter { |
| 32 | private static Unsafe unsafe = XlibWrapper.unsafe; |
| 33 | private final long actual_type = unsafe.allocateMemory(8); |
| 34 | private final long actual_format = unsafe.allocateMemory(4); |
| 35 | private final long nitems_ptr = unsafe.allocateMemory(8); |
| 36 | private final long bytes_after = unsafe.allocateMemory(8); |
| 37 | private final long data = unsafe.allocateMemory(8); |
| 38 | private final long window; |
| 39 | private final XAtom property; |
| 40 | private final long offset; |
| 41 | private final long length; |
| 42 | private final boolean auto_delete; |
| 43 | private final long type; |
| 44 | private boolean executed = false; |
| 45 | public WindowPropertyGetter(long window, XAtom property, long offset, |
| 46 | long length, boolean auto_delete, long type) |
| 47 | { |
| 48 | if (property.getAtom() == 0) { |
| 49 | throw new IllegalArgumentException("Property ATOM should be initialized first:" + property); |
| 50 | } |
| 51 | // Zero is AnyPropertyType. |
| 52 | // if (type == 0) { |
| 53 | // throw new IllegalArgumentException("Type ATOM shouldn't be zero"); |
| 54 | // } |
| 55 | if (window == 0) { |
| 56 | throw new IllegalArgumentException("Window must not be zero"); |
| 57 | } |
| 58 | this.window = window; |
| 59 | this.property = property; |
| 60 | this.offset = offset; |
| 61 | this.length = length; |
| 62 | this.auto_delete = auto_delete; |
| 63 | this.type = type; |
| 64 | |
| 65 | Native.putLong(data, 0); |
| 66 | sun.java2d.Disposer.addRecord(this, disposer = new UnsafeXDisposerRecord("WindowPropertyGetter", new long[] {actual_type, |
| 67 | actual_format, nitems_ptr, bytes_after}, new long[] {data})); |
| 68 | } |
| 69 | UnsafeXDisposerRecord disposer; |
| 70 | public WindowPropertyGetter(long window, XAtom property, long offset, |
| 71 | long length, boolean auto_delete, XAtom type) |
| 72 | { |
| 73 | this(window, property, offset, length, auto_delete, type.getAtom()); |
| 74 | } |
| 75 | public int execute() { |
| 76 | return execute(null); |
| 77 | } |
| 78 | public int execute(XToolkit.XErrorHandler errorHandler) { |
| 79 | |
| 80 | XToolkit.awtLock(); |
| 81 | try { |
| 82 | if (isDisposed()) { |
| 83 | throw new IllegalStateException("Disposed"); |
| 84 | } |
| 85 | if (executed) { |
| 86 | throw new IllegalStateException("Already executed"); |
| 87 | } |
| 88 | executed = true; |
| 89 | |
| 90 | if (isCachingSupported() && isCached()) { |
| 91 | readFromCache(); |
| 92 | return XlibWrapper.Success; |
| 93 | } |
| 94 | |
| 95 | // Fix for performance problem - IgnodeBadWindowHandler is |
| 96 | // used too much without reason, just ignore it |
| 97 | if (errorHandler == XToolkit.IgnoreBadWindowHandler) { |
| 98 | errorHandler = null; |
| 99 | } |
| 100 | |
| 101 | if (errorHandler != null) { |
| 102 | XToolkit.WITH_XERROR_HANDLER(errorHandler); |
| 103 | } |
| 104 | Native.putLong(data, 0); |
| 105 | int status = XlibWrapper.XGetWindowProperty(XToolkit.getDisplay(), window, property.getAtom(), |
| 106 | offset, length, (auto_delete?1:0), type, |
| 107 | actual_type, actual_format, nitems_ptr, |
| 108 | bytes_after, data); |
| 109 | if (isCachingSupported() && status == XlibWrapper.Success && getData() != 0 && isCacheableProperty(property)) { |
| 110 | // Property has some data, we cache them |
| 111 | cacheProperty(); |
| 112 | } |
| 113 | |
| 114 | if (errorHandler != null) { |
| 115 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 116 | } |
| 117 | return status; |
| 118 | } finally { |
| 119 | XToolkit.awtUnlock(); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | public boolean isExecuted() { |
| 124 | return executed; |
| 125 | } |
| 126 | |
| 127 | public boolean isDisposed() { |
| 128 | return disposer.disposed; |
| 129 | } |
| 130 | |
| 131 | public int getActualFormat() { |
| 132 | if (isDisposed()) { |
| 133 | throw new IllegalStateException("Disposed"); |
| 134 | } |
| 135 | if (!executed) { |
| 136 | throw new IllegalStateException("Not executed"); |
| 137 | } |
| 138 | return unsafe.getInt(actual_format); |
| 139 | } |
| 140 | public long getActualType() { |
| 141 | if (isDisposed()) { |
| 142 | throw new IllegalStateException("Disposed"); |
| 143 | } |
| 144 | if (!executed) { |
| 145 | throw new IllegalStateException("Not executed"); |
| 146 | } |
| 147 | return XAtom.getAtom(actual_type); |
| 148 | } |
| 149 | public int getNumberOfItems() { |
| 150 | if (isDisposed()) { |
| 151 | throw new IllegalStateException("Disposed"); |
| 152 | } |
| 153 | if (!executed) { |
| 154 | throw new IllegalStateException("Not executed"); |
| 155 | } |
| 156 | return (int)Native.getLong(nitems_ptr); |
| 157 | } |
| 158 | public long getData() { |
| 159 | if (isDisposed()) { |
| 160 | throw new IllegalStateException("Disposed"); |
| 161 | } |
| 162 | return Native.getLong(data); |
| 163 | } |
| 164 | public long getBytesAfter() { |
| 165 | if (isDisposed()) { |
| 166 | throw new IllegalStateException("Disposed"); |
| 167 | } |
| 168 | if (!executed) { |
| 169 | throw new IllegalStateException("Not executed"); |
| 170 | } |
| 171 | return Native.getLong(bytes_after); |
| 172 | } |
| 173 | public void dispose() { |
| 174 | XToolkit.awtLock(); |
| 175 | try { |
| 176 | if (isDisposed()) { |
| 177 | return; |
| 178 | } |
| 179 | disposer.dispose(); |
| 180 | } finally { |
| 181 | XToolkit.awtUnlock(); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | static boolean isCachingSupported() { |
| 186 | return XPropertyCache.isCachingSupported(); |
| 187 | } |
| 188 | |
| 189 | static Set<XAtom> cacheableProperties = new HashSet<XAtom>(Arrays.asList(new XAtom[] { |
| 190 | XAtom.get("_NET_WM_STATE"), XAtom.get("WM_STATE"), XAtom.get("_MOTIF_WM_HINTS")})); |
| 191 | |
| 192 | static boolean isCacheableProperty(XAtom property) { |
| 193 | return cacheableProperties.contains(property); |
| 194 | } |
| 195 | |
| 196 | boolean isCached() { |
| 197 | return XPropertyCache.isCached(window, property); |
| 198 | } |
| 199 | |
| 200 | int getDataLength() { |
| 201 | return getActualFormat() / 8 * getNumberOfItems(); |
| 202 | } |
| 203 | |
| 204 | void readFromCache() { |
| 205 | property.putAtom(actual_type); |
| 206 | XPropertyCache.PropertyCacheEntry entry = XPropertyCache.getCacheEntry(window, property); |
| 207 | Native.putInt(actual_format, entry.getFormat()); |
| 208 | Native.putLong(nitems_ptr, entry.getNumberOfItems()); |
| 209 | Native.putLong(bytes_after, entry.getBytesAfter()); |
| 210 | Native.putLong(data, unsafe.allocateMemory(getDataLength())); |
| 211 | XlibWrapper.memcpy(getData(), entry.getData(), getDataLength()); |
| 212 | } |
| 213 | |
| 214 | void cacheProperty() { |
| 215 | XPropertyCache.storeCache( |
| 216 | new XPropertyCache.PropertyCacheEntry(getActualFormat(), |
| 217 | getNumberOfItems(), |
| 218 | getBytesAfter(), |
| 219 | getData(), |
| 220 | getDataLength()), |
| 221 | window, |
| 222 | property); |
| 223 | } |
| 224 | |
| 225 | } |