1 /* 2 Open Tracker License 3 4 Terms and Conditions 5 6 Copyright (c) 1991-2000, Be Incorporated. All rights reserved. 7 8 Permission is hereby granted, free of charge, to any person obtaining a copy of 9 this software and associated documentation files (the "Software"), to deal in 10 the Software without restriction, including without limitation the rights to 11 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 12 of the Software, and to permit persons to whom the Software is furnished to do 13 so, subject to the following conditions: 14 15 The above copyright notice and this permission notice applies to all licensees 16 and shall be included in all copies or substantial portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY, 20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 22 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION 23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 25 Except as contained in this notice, the name of Be Incorporated shall not be 26 used in advertising or otherwise to promote the sale, use or other dealings in 27 this Software without prior written authorization from Be Incorporated. 28 29 Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks 30 of Be Incorporated in the United States and other countries. Other brand product 31 names are registered trademarks or trademarks of their respective holders. 32 All rights reserved. 33 */ 34 35 36 #include "Attributes.h" 37 #include "Bitmaps.h" 38 #include "FSUtils.h" 39 #include "Tracker.h" 40 #include "TrashWatcher.h" 41 42 #include <Debug.h> 43 #include <Directory.h> 44 #include <NodeMonitor.h> 45 #include <Path.h> 46 #include <Volume.h> 47 #include <VolumeRoster.h> 48 49 #include <string.h> 50 51 52 BTrashWatcher::BTrashWatcher() 53 : BLooper("TrashWatcher", B_LOW_PRIORITY), 54 fTrashNodeList(20, true) 55 { 56 FSCreateTrashDirs(); 57 WatchTrashDirs(); 58 fTrashFull = CheckTrashDirs(); 59 UpdateTrashIcons(); 60 61 // watch volumes 62 TTracker::WatchNode(0, B_WATCH_MOUNT, this); 63 } 64 65 66 BTrashWatcher::~BTrashWatcher() 67 { 68 stop_watching(this); 69 } 70 71 72 bool 73 BTrashWatcher::IsTrashNode(const node_ref *testNode) const 74 { 75 int32 count = fTrashNodeList.CountItems(); 76 for (int32 index = 0; index < count; index++) { 77 node_ref *nref = fTrashNodeList.ItemAt(index); 78 if (nref->node == testNode->node && nref->device == testNode->device) 79 return true; 80 } 81 82 return false; 83 } 84 85 86 void 87 BTrashWatcher::MessageReceived(BMessage *message) 88 { 89 if (message->what != B_NODE_MONITOR) { 90 _inherited::MessageReceived(message); 91 return; 92 } 93 94 switch (message->FindInt32("opcode")) { 95 case B_ENTRY_CREATED: 96 if (!fTrashFull) { 97 fTrashFull = true; 98 UpdateTrashIcons(); 99 } 100 break; 101 102 case B_ENTRY_MOVED: 103 { 104 // allow code to fall through if move is from/to trash 105 // but do nothing for moves in the same directory 106 ino_t toDir; 107 ino_t fromDir; 108 message->FindInt64("from directory", &fromDir); 109 message->FindInt64("to directory", &toDir); 110 if (fromDir == toDir) 111 break; 112 } 113 // fall thru 114 115 case B_DEVICE_UNMOUNTED: 116 // fall thru 117 118 case B_ENTRY_REMOVED: 119 { 120 bool full = CheckTrashDirs(); 121 if (fTrashFull != full) { 122 fTrashFull = full; 123 UpdateTrashIcons(); 124 } 125 break; 126 } 127 // We should handle DEVICE_UNMOUNTED here too to remove trash 128 129 case B_DEVICE_MOUNTED: 130 { 131 dev_t device; 132 BDirectory trashDir; 133 if (message->FindInt32("new device", &device) == B_OK 134 && FSGetTrashDir(&trashDir, device) == B_OK) { 135 node_ref trashNode; 136 trashDir.GetNodeRef(&trashNode); 137 TTracker::WatchNode(&trashNode, B_WATCH_DIRECTORY, this); 138 fTrashNodeList.AddItem(new node_ref(trashNode)); 139 140 // Check if the new volume has anything trashed. 141 if (CheckTrashDirs() && !fTrashFull) { 142 fTrashFull = true; 143 UpdateTrashIcons(); 144 } 145 } 146 break; 147 } 148 } 149 } 150 151 152 void 153 BTrashWatcher::UpdateTrashIcons() 154 { 155 BVolume boot; 156 if (BVolumeRoster().GetBootVolume(&boot) != B_OK) 157 return; 158 159 BDirectory trashDir; 160 if (FSGetTrashDir(&trashDir, boot.Device()) == B_OK) { 161 // pull out the icons for the current trash state from resources and 162 // apply them onto the trash directory node 163 size_t largeSize = 0; 164 size_t smallSize = 0; 165 size_t vectorSize = 0; 166 const void *largeData = GetTrackerResources()->LoadResource('ICON', 167 fTrashFull ? kResTrashFullIcon : kResTrashIcon, &largeSize); 168 169 const void *smallData = GetTrackerResources()->LoadResource('MICN', 170 fTrashFull ? kResTrashFullIcon : kResTrashIcon, &smallSize); 171 172 const void *vectorData = GetTrackerResources()->LoadResource( 173 B_RAW_TYPE, fTrashFull ? kResTrashFullIcon : kResTrashIcon, 174 &vectorSize); 175 176 if (vectorData) 177 trashDir.WriteAttr(kAttrIcon, B_RAW_TYPE, 0, 178 vectorData, vectorSize); 179 // TODO: enable me once the vector icon is indeed in the resources 180 // else 181 // TRESPASS(); 182 183 if (largeData) 184 trashDir.WriteAttr(kAttrLargeIcon, 'ICON', 0, 185 largeData, largeSize); 186 else 187 TRESPASS(); 188 189 if (smallData) 190 trashDir.WriteAttr(kAttrMiniIcon, 'MICN', 0, 191 smallData, smallSize); 192 else 193 TRESPASS(); 194 } 195 } 196 197 198 void 199 BTrashWatcher::WatchTrashDirs() 200 { 201 BVolumeRoster volRoster; 202 volRoster.Rewind(); 203 BVolume volume; 204 while (volRoster.GetNextVolume(&volume) == B_OK) { 205 if (volume.IsReadOnly() || !volume.IsPersistent()) 206 continue; 207 208 BDirectory trashDir; 209 if (FSGetTrashDir(&trashDir, volume.Device()) == B_OK) { 210 node_ref trash_node; 211 trashDir.GetNodeRef(&trash_node); 212 watch_node(&trash_node, B_WATCH_DIRECTORY, this); 213 fTrashNodeList.AddItem(new node_ref(trash_node)); 214 } 215 } 216 } 217 218 219 bool 220 BTrashWatcher::CheckTrashDirs() 221 { 222 BVolumeRoster volRoster; 223 volRoster.Rewind(); 224 BVolume volume; 225 while (volRoster.GetNextVolume(&volume) == B_OK) { 226 if (volume.IsReadOnly() || !volume.IsPersistent()) 227 continue; 228 229 BDirectory trashDir; 230 FSGetTrashDir(&trashDir, volume.Device()); 231 trashDir.Rewind(); 232 BEntry entry; 233 if (trashDir.GetNextEntry(&entry) == B_OK) 234 return true; 235 } 236 237 return false; 238 } 239