36
37
38 /**
39 * AccessBridgeATInstance constructor
40 */
41 AccessBridgeATInstance::AccessBridgeATInstance(HWND ourABWindow, HWND winABWindow,
42 char *memoryFilename,
43 AccessBridgeATInstance *next) {
44 ourAccessBridgeWindow = ourABWindow;
45 winAccessBridgeWindow = winABWindow;
46 nextATInstance = next;
47 javaEventMask = 0;
48 accessibilityEventMask = 0;
49 strncpy(memoryMappedFileName, memoryFilename, cMemoryMappedNameSize);
50 }
51
52 /**
53 * AccessBridgeATInstance descructor
54 */
55 AccessBridgeATInstance::~AccessBridgeATInstance() {
56 PrintDebugString("\r\nin AccessBridgeATInstance::~AccessBridgeATInstance");
57
58 // if IPC memory mapped file view is valid, unmap it
59 if (memoryMappedView != (char *) 0) {
60 PrintDebugString(" unmapping memoryMappedView; view = %p", memoryMappedView);
61 UnmapViewOfFile(memoryMappedView);
62 memoryMappedView = (char *) 0;
63 }
64 // if IPC memory mapped file handle map is open, close it
65 if (memoryMappedFileMapHandle != (HANDLE) 0) {
66 PrintDebugString(" closing memoryMappedFileMapHandle; handle = %p", memoryMappedFileMapHandle);
67 CloseHandle(memoryMappedFileMapHandle);
68 memoryMappedFileMapHandle = (HANDLE) 0;
69 }
70 }
71
72 /**
73 * Sets up the memory-mapped file to do IPC messaging
74 * 1 files is created: to handle requests for information
75 * initiated from Windows AT. The package is placed into
76 * the memory-mapped file (char *memoryMappedView),
77 * and then a special SendMessage() is sent. When the
78 * JavaDLL returns from SendMessage() processing, the
79 * data will be in memoryMappedView. The SendMessage()
80 * return value tells us if all is right with the world.
81 *
82 * The set-up proces involves creating the memory-mapped
83 * file, and writing a special string to it so that the
84 * WindowsDLL so it knows about it as well.
85 */
86 LRESULT
87 AccessBridgeATInstance::initiateIPC() {
88 DWORD errorCode;
89
90 PrintDebugString("\r\nIn AccessBridgeATInstance::initiateIPC()");
91
92 // open Windows-initiated IPC filemap & map it to a ptr
93
94 memoryMappedFileMapHandle = OpenFileMapping(FILE_MAP_READ | FILE_MAP_WRITE,
95 FALSE, memoryMappedFileName);
96 if (memoryMappedFileMapHandle == NULL) {
97 errorCode = GetLastError();
98 PrintDebugString(" Failed to CreateFileMapping for %s, error: %X", memoryMappedFileName, errorCode);
99 return errorCode;
100 } else {
101 PrintDebugString(" CreateFileMapping worked - filename: %s", memoryMappedFileName);
102 }
103
104 memoryMappedView = (char *) MapViewOfFile(memoryMappedFileMapHandle,
105 FILE_MAP_READ | FILE_MAP_WRITE,
106 0, 0, 0);
107 if (memoryMappedView == NULL) {
108 errorCode = GetLastError();
109 PrintDebugString(" Failed to MapViewOfFile for %s, error: %X", memoryMappedFileName, errorCode);
110 return errorCode;
111 } else {
112 PrintDebugString(" MapViewOfFile worked - view: %p", memoryMappedView);
113 }
114
115
116 // look for the JavaDLL's answer to see if it could read the file
117 if (strcmp(memoryMappedView, AB_MEMORY_MAPPED_FILE_OK_QUERY) != 0) {
118 PrintDebugString(" JavaVM failed to write to memory mapped file %s",
119 memoryMappedFileName);
120 return -1;
121 } else {
122 PrintDebugString(" JavaVM successfully wrote to file!");
123 }
124
125
126 // write some data to the memory mapped file for WindowsDLL to verify
127 strcpy(memoryMappedView, AB_MEMORY_MAPPED_FILE_OK_ANSWER);
128
129
130 return 0;
131 }
132
133
134 typedef struct EVENT_STRUCT
135 {
136 char *buffer;
137 int bufsize;
138 ABHWND64 winAccessBridgeWindow;
139 ABHWND64 ourAccessBridgeWindow;
140 }EVENT_STRUCT;
141
142
196 event_struct->ourAccessBridgeWindow = ABHandleToLong(ourAccessBridgeWindow);
197 event_struct->winAccessBridgeWindow = ABHandleToLong(winAccessBridgeWindow);
198 if(!JavaBridgeThreadId)
199 {
200 HANDLE JavaBridgeThreadHandle = BeginThread(JavaBridgeThread,&JavaBridgeThreadId,(DWORD)event_struct);
201 CloseHandle(JavaBridgeThreadHandle);
202 }
203 PostThreadMessage(JavaBridgeThreadId,WM_USER,(WPARAM)event_struct,0);
204 }
205
206
207 /**
208 * sendJavaEventPackage - uses SendMessage(WM_COPYDATA) to do
209 * IPC messaging with the Java AccessBridge DLL
210 * to propogate events to those ATs that want 'em
211 *
212 */
213 LRESULT
214 AccessBridgeATInstance::sendJavaEventPackage(char *buffer, int bufsize, long eventID) {
215
216 PrintDebugString("AccessBridgeATInstance::sendJavaEventPackage() eventID = %X", eventID);
217 PrintDebugString("AccessBridgeATInstance::sendJavaEventPackage() (using PostMessage) eventID = %X", eventID);
218
219 if (eventID & javaEventMask) {
220 do_event(buffer,bufsize,ourAccessBridgeWindow,winAccessBridgeWindow);
221 return(0);
222 } else {
223 return -1;
224 }
225 }
226
227
228 /**
229 * uses SendMessage(WM_COPYDATA) to do
230 * IPC messaging with the Java AccessBridge DLL
231 * to propogate events to those ATs that want 'em
232 *
233 */
234 LRESULT
235 AccessBridgeATInstance::sendAccessibilityEventPackage(char *buffer, int bufsize, long eventID) {
236
237 PrintDebugString("AccessBridgeATInstance::sendAccessibilityEventPackage() eventID = %X", eventID);
238
239 if (eventID & accessibilityEventMask) {
240 do_event(buffer,bufsize,ourAccessBridgeWindow,winAccessBridgeWindow);
241 return(0);
242 } else {
243 return -1;
244 }
245 }
246
247
248 /**
249 * findABATInstanceFromATHWND - walk through linked list from
250 * where we are. Return the
251 * AccessBridgeATInstance
252 * of the ABATInstance that
253 * matches the passed in vmID;
254 * no match: return 0
255 */
256 AccessBridgeATInstance *
257 AccessBridgeATInstance::findABATInstanceFromATHWND(HWND window) {
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36
37
38 /**
39 * AccessBridgeATInstance constructor
40 */
41 AccessBridgeATInstance::AccessBridgeATInstance(HWND ourABWindow, HWND winABWindow,
42 char *memoryFilename,
43 AccessBridgeATInstance *next) {
44 ourAccessBridgeWindow = ourABWindow;
45 winAccessBridgeWindow = winABWindow;
46 nextATInstance = next;
47 javaEventMask = 0;
48 accessibilityEventMask = 0;
49 strncpy(memoryMappedFileName, memoryFilename, cMemoryMappedNameSize);
50 }
51
52 /**
53 * AccessBridgeATInstance descructor
54 */
55 AccessBridgeATInstance::~AccessBridgeATInstance() {
56 PrintDebugString("[INFO]: in AccessBridgeATInstance::~AccessBridgeATInstance");
57
58 // if IPC memory mapped file view is valid, unmap it
59 if (memoryMappedView != (char *) 0) {
60 PrintDebugString("[INFO]: unmapping memoryMappedView; view = %p", memoryMappedView);
61 UnmapViewOfFile(memoryMappedView);
62 memoryMappedView = (char *) 0;
63 }
64 // if IPC memory mapped file handle map is open, close it
65 if (memoryMappedFileMapHandle != (HANDLE) 0) {
66 PrintDebugString("[INFO]: closing memoryMappedFileMapHandle; handle = %p", memoryMappedFileMapHandle);
67 CloseHandle(memoryMappedFileMapHandle);
68 memoryMappedFileMapHandle = (HANDLE) 0;
69 }
70 }
71
72 /**
73 * Sets up the memory-mapped file to do IPC messaging
74 * 1 files is created: to handle requests for information
75 * initiated from Windows AT. The package is placed into
76 * the memory-mapped file (char *memoryMappedView),
77 * and then a special SendMessage() is sent. When the
78 * JavaDLL returns from SendMessage() processing, the
79 * data will be in memoryMappedView. The SendMessage()
80 * return value tells us if all is right with the world.
81 *
82 * The set-up proces involves creating the memory-mapped
83 * file, and writing a special string to it so that the
84 * WindowsDLL so it knows about it as well.
85 */
86 LRESULT
87 AccessBridgeATInstance::initiateIPC() {
88 DWORD errorCode;
89
90 PrintDebugString("[INFO]: In AccessBridgeATInstance::initiateIPC()");
91
92 // open Windows-initiated IPC filemap & map it to a ptr
93
94 memoryMappedFileMapHandle = OpenFileMapping(FILE_MAP_READ | FILE_MAP_WRITE,
95 FALSE, memoryMappedFileName);
96 if (memoryMappedFileMapHandle == NULL) {
97 errorCode = GetLastError();
98 PrintDebugString("[ERROR]: Failed to CreateFileMapping for %s, error: %X", memoryMappedFileName, errorCode);
99 return errorCode;
100 } else {
101 PrintDebugString("[INFO]: CreateFileMapping worked - filename: %s", memoryMappedFileName);
102 }
103
104 memoryMappedView = (char *) MapViewOfFile(memoryMappedFileMapHandle,
105 FILE_MAP_READ | FILE_MAP_WRITE,
106 0, 0, 0);
107 if (memoryMappedView == NULL) {
108 errorCode = GetLastError();
109 PrintDebugString("[ERROR]: Failed to MapViewOfFile for %s, error: %X", memoryMappedFileName, errorCode);
110 return errorCode;
111 } else {
112 PrintDebugString("[INFO]: MapViewOfFile worked - view: %p", memoryMappedView);
113 }
114
115
116 // look for the JavaDLL's answer to see if it could read the file
117 if (strcmp(memoryMappedView, AB_MEMORY_MAPPED_FILE_OK_QUERY) != 0) {
118 PrintDebugString("[ERROR]: JavaVM failed to write to memory mapped file %s",
119 memoryMappedFileName);
120 return -1;
121 } else {
122 PrintDebugString("[INFO]: JavaVM successfully wrote to file!");
123 }
124
125
126 // write some data to the memory mapped file for WindowsDLL to verify
127 strcpy(memoryMappedView, AB_MEMORY_MAPPED_FILE_OK_ANSWER);
128
129
130 return 0;
131 }
132
133
134 typedef struct EVENT_STRUCT
135 {
136 char *buffer;
137 int bufsize;
138 ABHWND64 winAccessBridgeWindow;
139 ABHWND64 ourAccessBridgeWindow;
140 }EVENT_STRUCT;
141
142
196 event_struct->ourAccessBridgeWindow = ABHandleToLong(ourAccessBridgeWindow);
197 event_struct->winAccessBridgeWindow = ABHandleToLong(winAccessBridgeWindow);
198 if(!JavaBridgeThreadId)
199 {
200 HANDLE JavaBridgeThreadHandle = BeginThread(JavaBridgeThread,&JavaBridgeThreadId,(DWORD)event_struct);
201 CloseHandle(JavaBridgeThreadHandle);
202 }
203 PostThreadMessage(JavaBridgeThreadId,WM_USER,(WPARAM)event_struct,0);
204 }
205
206
207 /**
208 * sendJavaEventPackage - uses SendMessage(WM_COPYDATA) to do
209 * IPC messaging with the Java AccessBridge DLL
210 * to propogate events to those ATs that want 'em
211 *
212 */
213 LRESULT
214 AccessBridgeATInstance::sendJavaEventPackage(char *buffer, int bufsize, long eventID) {
215
216 PrintDebugString("[INFO]: AccessBridgeATInstance::sendJavaEventPackage() eventID = %X", eventID);
217 PrintDebugString("[INFO]: AccessBridgeATInstance::sendJavaEventPackage() (using PostMessage) eventID = %X", eventID);
218
219 if (eventID & javaEventMask) {
220 do_event(buffer,bufsize,ourAccessBridgeWindow,winAccessBridgeWindow);
221 return(0);
222 } else {
223 return -1;
224 }
225 }
226
227
228 /**
229 * uses SendMessage(WM_COPYDATA) to do
230 * IPC messaging with the Java AccessBridge DLL
231 * to propogate events to those ATs that want 'em
232 *
233 */
234 LRESULT
235 AccessBridgeATInstance::sendAccessibilityEventPackage(char *buffer, int bufsize, long eventID) {
236
237 PrintDebugString("[INFO]: AccessBridgeATInstance::sendAccessibilityEventPackage() eventID = %X", eventID);
238
239 if (eventID & accessibilityEventMask) {
240 do_event(buffer,bufsize,ourAccessBridgeWindow,winAccessBridgeWindow);
241 return(0);
242 } else {
243 return -1;
244 }
245 }
246
247
248 /**
249 * findABATInstanceFromATHWND - walk through linked list from
250 * where we are. Return the
251 * AccessBridgeATInstance
252 * of the ABATInstance that
253 * matches the passed in vmID;
254 * no match: return 0
255 */
256 AccessBridgeATInstance *
257 AccessBridgeATInstance::findABATInstanceFromATHWND(HWND window) {
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