Mercurial > hg > xemacs-beta
annotate src/select.c @ 5391:f9dc75bdbdc4
Implement #'load-time-value less hackishly, by modifying the byte compiler.
2011-04-02 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-output-preface): New.
* bytecomp.el (byte-compile-output-file-form):
* bytecomp.el (byte-compile-output-docform):
* bytecomp.el (byte-compile-file-form):
* bytecomp.el (byte-compile-file-form-defmumble):
* bytecomp.el (symbol-value):
* bytecomp.el (byte-compile-symbol-value): New.
* cl-macs.el (load-time-value):
No longer implement load-time-value by very hackishly redefining
#'byte-compile-file-form-defmumble, instead make the appropriate
changes in #'byte-compile-file-form-defmumble and
#'byte-compile-file-form instead. We also add a specific byte-compile
method for #'symbol-value, using the add-properties-to-a-gensym
approach that worked for #'block and #'return-from.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 02 Apr 2011 16:13:20 +0100 |
| parents | 8608eadee6ba |
| children | a9094f28f9a9 |
| rev | line source |
|---|---|
| 414 | 1 /* Generic selection processing for XEmacs |
| 2 Copyright (C) 1999 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1999 Andy Piper. | |
| 4 | |
| 5 This file is part of XEmacs. | |
| 6 | |
| 7 XEmacs is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2, or (at your option) any | |
| 10 later version. | |
| 11 | |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with XEmacs; see the file COPYING. If not, write to | |
| 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 Boston, MA 02111-1307, USA. */ | |
| 21 | |
| 22 /* Synched up with: Not synched with FSF. */ | |
| 23 | |
| 24 #include <config.h> | |
| 25 #include "lisp.h" | |
| 26 | |
| 27 #include "buffer.h" | |
| 872 | 28 #include "device-impl.h" |
| 442 | 29 #include "extents.h" |
| 414 | 30 #include "console.h" |
|
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changeset
|
31 #include "fontcolor.h" |
| 414 | 32 |
| 33 #include "frame.h" | |
| 34 #include "opaque.h" | |
| 35 #include "select.h" | |
| 36 | |
| 442 | 37 /* X Atoms */ |
| 414 | 38 Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
| 39 QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
| 40 QATOM_PAIR, QCOMPOUND_TEXT; | |
| 41 | |
| 442 | 42 /* Windows clipboard formats */ |
| 43 Lisp_Object QCF_TEXT, QCF_BITMAP, QCF_METAFILEPICT, QCF_SYLK, QCF_DIF, | |
| 44 QCF_TIFF, QCF_OEMTEXT, QCF_DIB, QCF_DIBV5, QCF_PALETTE, QCF_PENDATA, | |
| 45 QCF_RIFF, QCF_WAVE, QCF_UNICODETEXT, QCF_ENHMETAFILE, QCF_HDROP, QCF_LOCALE, | |
| 46 QCF_OWNERDISPLAY, QCF_DSPTEXT, QCF_DSPBITMAP, QCF_DSPMETAFILEPICT, | |
| 47 QCF_DSPENHMETAFILE; | |
| 48 | |
| 49 /* Selection strategy symbols */ | |
| 50 Lisp_Object Qreplace_all, Qreplace_existing; | |
| 51 | |
| 414 | 52 /* "Selection owner couldn't convert selection" */ |
| 53 Lisp_Object Qselection_conversion_error; | |
| 54 | |
| 442 | 55 /* A couple of Lisp functions */ |
| 56 Lisp_Object Qselect_convert_in, Qselect_convert_out, Qselect_coerce; | |
| 57 | |
| 58 /* These are alists whose CARs are selection-types (whose names are the same | |
| 59 as the names of X Atoms or Windows clipboard formats) and whose CDRs are | |
| 60 the names of Lisp functions to call to convert the given Emacs selection | |
| 61 value to a string representing the given selection type. This is for | |
| 62 elisp-level extension of the emacs selection handling. | |
| 414 | 63 */ |
| 442 | 64 Lisp_Object Vselection_converter_out_alist; |
| 65 Lisp_Object Vselection_converter_in_alist; | |
| 66 Lisp_Object Vselection_coercion_alist; | |
| 67 Lisp_Object Vselection_appender_alist; | |
| 68 Lisp_Object Vselection_buffer_killed_alist; | |
| 69 Lisp_Object Vselection_coercible_types; | |
| 414 | 70 |
| 71 Lisp_Object Vlost_selection_hooks; | |
| 72 | |
| 73 /* This is an association list whose elements are of the form | |
| 74 ( selection-name selection-value selection-timestamp ) | |
| 75 selection-name is a lisp symbol, whose name is the name of an X Atom. | |
| 442 | 76 selection-value is a list of cons pairs that emacs owns for that selection. |
| 77 Each pair consists of (type . value), where type is nil or a | |
| 78 selection data type, and value is any type of Lisp object. | |
| 414 | 79 selection-timestamp is the time at which emacs began owning this selection, |
| 80 as a cons of two 16-bit numbers (making a 32 bit time). | |
| 81 If there is an entry in this alist, then it can be assumed that emacs owns | |
| 82 that selection. | |
| 83 The only (eq) parts of this list that are visible from elisp are the | |
| 84 selection-values. | |
| 85 */ | |
| 86 Lisp_Object Vselection_alist; | |
| 87 | |
| 442 | 88 /* Given a selection-name and desired type, this looks up our local copy of |
| 89 the selection value and converts it to the type. */ | |
| 414 | 90 static Lisp_Object |
| 91 get_local_selection (Lisp_Object selection_symbol, Lisp_Object target_type) | |
| 92 { | |
| 93 Lisp_Object local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
| 94 | |
| 442 | 95 if (!NILP (local_value)) |
| 96 { | |
| 97 Lisp_Object value_list = XCAR (XCDR (local_value)); | |
| 98 Lisp_Object value; | |
| 414 | 99 |
| 442 | 100 /* First try to find an entry of the appropriate type */ |
| 101 value = assq_no_quit (target_type, value_list); | |
| 102 | |
| 103 if (!NILP (value)) | |
| 104 return XCDR (value); | |
| 414 | 105 } |
| 106 | |
| 442 | 107 return Qnil; |
| 414 | 108 } |
| 109 | |
| 3025 | 110 /* #### Should perhaps handle `MULTIPLE'. The code below is now completely |
| 442 | 111 broken due to a re-organization of get_local_selection, but I've left |
| 112 it here should anyone show an interest - ajh */ | |
| 113 #if 0 | |
| 114 else if (CONSP (target_type) && | |
| 115 XCAR (target_type) == QMULTIPLE) | |
| 116 { | |
| 117 Lisp_Object pairs = XCDR (target_type); | |
| 118 int len = XVECTOR_LENGTH (pairs); | |
| 119 int i; | |
| 120 /* If the target is MULTIPLE, then target_type looks like | |
| 121 (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
| 122 We modify the second element of each pair in the vector and | |
| 123 return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
| 124 */ | |
| 125 for (i = 0; i < len; i++) | |
| 126 { | |
| 127 Lisp_Object pair = XVECTOR_DATA (pairs) [i]; | |
| 128 XVECTOR_DATA (pair) [1] = | |
| 129 x_get_local_selection (XVECTOR_DATA (pair) [0], | |
| 130 XVECTOR_DATA (pair) [1]); | |
| 131 } | |
| 132 return pairs; | |
| 133 } | |
| 134 #endif | |
| 135 | |
| 136 DEFUN ("own-selection-internal", Fown_selection_internal, 2, 5, 0, /* | |
| 444 | 137 Give the selection SELECTION-NAME the value SELECTION-VALUE. |
| 138 SELECTION-NAME is a symbol, typically PRIMARY, SECONDARY, or CLIPBOARD. | |
| 139 SELECTION-VALUE is typically a string, or a cons of two markers, but may be | |
| 442 | 140 anything that the functions on selection-converter-out-alist know about. |
| 444 | 141 Optional arg HOW-TO-ADD specifies how the selection will be combined |
| 843 | 142 with any existing selection(s) - see `own-selection' for more |
| 143 information. | |
| 444 | 144 Optional arg DATA-TYPE is a window-system-specific type. |
| 145 Optional arg DEVICE specifies the device on which to assert the selection. | |
| 146 It defaults to the selected device. | |
| 414 | 147 */ |
| 442 | 148 (selection_name, selection_value, how_to_add, data_type, device)) |
| 414 | 149 { |
| 442 | 150 Lisp_Object selection_time, selection_data, prev_value = Qnil, |
| 151 value_list = Qnil; | |
| 152 Lisp_Object prev_real_value = Qnil; | |
| 440 | 153 struct gcpro gcpro1; |
| 458 | 154 int owned_p = 0; |
| 414 | 155 |
| 156 CHECK_SYMBOL (selection_name); | |
| 563 | 157 if (NILP (selection_value)) |
| 158 invalid_argument ("`selection-value' may not be nil", Qunbound); | |
| 414 | 159 |
| 160 if (NILP (device)) | |
| 161 device = Fselected_device (Qnil); | |
| 162 | |
| 442 | 163 if (!EQ (how_to_add, Qappend) && !EQ (how_to_add, Qt) |
| 164 && !EQ (how_to_add, Qreplace_existing) | |
| 165 && !EQ (how_to_add, Qreplace_all) && !NILP (how_to_add)) | |
| 563 | 166 invalid_constant ("`how-to-add' must be nil, append, replace_all, " |
| 167 "replace_existing or t", how_to_add); | |
| 442 | 168 |
| 169 #ifdef MULE | |
| 170 if (NILP (data_type)) | |
| 171 data_type = QCOMPOUND_TEXT; | |
| 172 #else | |
| 173 if (NILP (data_type)) | |
| 174 data_type = QSTRING; | |
| 175 #endif | |
| 176 | |
| 177 /* Examine the how-to-add argument */ | |
| 178 if (EQ (how_to_add, Qreplace_all) || NILP (how_to_add)) | |
| 179 { | |
| 180 Lisp_Object local_selection_data = assq_no_quit (selection_name, | |
| 181 Vselection_alist); | |
| 182 | |
| 183 if (!NILP (local_selection_data)) | |
| 184 { | |
| 458 | 185 owned_p = 1; |
|
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186 Vselection_alist |
|
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Move #'delq, #'delete to Lisp, adding support for sequences.
Aidan Kehoe <kehoea@parhasard.net>
parents:
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changeset
|
187 = delq_no_quit (local_selection_data, Vselection_alist); |
| 442 | 188 } |
| 189 } | |
| 190 else | |
| 191 { | |
| 192 /* Look for a previous value */ | |
| 193 prev_value = assq_no_quit (selection_name, Vselection_alist); | |
| 194 | |
| 195 if (!NILP (prev_value)) | |
| 458 | 196 { |
| 197 owned_p = 1; | |
| 198 value_list = XCAR (XCDR (prev_value)); | |
| 199 } | |
| 440 | 200 |
| 442 | 201 if (!NILP (value_list)) |
| 202 prev_real_value = assq_no_quit (data_type, value_list); | |
| 203 } | |
| 204 | |
| 205 /* Append values if necessary */ | |
| 206 if (!NILP (value_list) && (EQ (how_to_add, Qappend) || EQ (how_to_add, Qt))) | |
| 414 | 207 { |
| 442 | 208 /* Did we have anything of this type previously? */ |
| 209 if (!NILP (prev_real_value)) | |
| 210 { | |
| 211 if ((NILP (data_type) && STRINGP (selection_value) | |
| 212 && STRINGP (XCDR (prev_real_value))) | |
| 213 || !NILP (data_type)) | |
| 214 { | |
| 215 Lisp_Object function = assq_no_quit (data_type, | |
| 216 Vselection_appender_alist); | |
| 217 | |
| 218 if (NILP (function)) | |
| 563 | 219 signal_error (Qinvalid_argument, |
| 220 "Cannot append selections of supplied types (no function)", | |
| 221 data_type); | |
| 442 | 222 |
| 223 function = XCDR (function); | |
| 224 | |
| 225 selection_value = call4 (function, | |
| 226 selection_name, | |
| 227 data_type, | |
| 228 XCDR (prev_real_value), | |
| 229 selection_value); | |
| 230 | |
| 231 if (NILP (selection_value)) | |
| 563 | 232 signal_error (Qinvalid_argument, |
| 233 "Cannot append selections of supplied types (function returned nil)", | |
| 234 data_type); | |
| 442 | 235 } |
| 236 else | |
| 563 | 237 signal_error_2 (Qinvalid_argument, "Cannot append selections of supplied types (data type nil and both values not strings)", |
| 238 XCDR (prev_real_value), | |
| 239 selection_value); | |
| 442 | 240 } |
| 241 | |
| 242 selection_data = Fcons (data_type, selection_value); | |
| 243 value_list = Fcons (selection_data, value_list); | |
| 244 } | |
| 245 | |
| 246 if (!NILP (prev_real_value)) | |
| 247 { | |
| 248 Lisp_Object rest; /* We know it isn't the CAR, so it's easy. */ | |
| 249 | |
| 250 /* Delete the old type entry from the list */ | |
| 251 for (rest = value_list; !NILP (rest); rest = Fcdr (rest)) | |
| 252 if (EQ (prev_real_value, Fcar (XCDR (rest)))) | |
| 414 | 253 { |
| 254 XCDR (rest) = Fcdr (XCDR (rest)); | |
| 255 break; | |
| 256 } | |
| 257 } | |
| 442 | 258 else |
| 259 { | |
| 260 value_list = Fcons (Fcons (data_type, selection_value), | |
| 261 value_list); | |
| 262 } | |
| 414 | 263 |
| 442 | 264 /* Complete the local cache update; note that we destructively |
| 265 modify the current list entry if there is one */ | |
| 266 if (NILP (prev_value)) | |
| 267 { | |
| 268 selection_data = list3 (selection_name, value_list, Qnil); | |
| 269 Vselection_alist = Fcons (selection_data, Vselection_alist); | |
| 270 } | |
| 271 else | |
| 272 { | |
| 273 selection_data = prev_value; | |
| 274 Fsetcar (XCDR (selection_data), value_list); | |
| 275 } | |
| 276 | |
| 277 GCPRO1 (selection_data); | |
| 278 | |
| 279 /* have to do device specific stuff last so that methods can access the | |
| 414 | 280 selection_alist */ |
| 2620 | 281 |
| 282 /* If you are re-implementing this for another redisplay type, either make | |
| 283 certain that the selection time will fit within thirty-two bits, or | |
| 284 redesign get-xemacs-selection-timestamp to return, say, a bignum, and | |
| 285 convert the device-specific timestamp to a bignum before storing it in | |
| 286 this list. The current practice is to blindly assume that the timestamp | |
| 287 is thirty-two bits, which will work for extant architectures. */ | |
| 288 | |
| 414 | 289 if (HAS_DEVMETH_P (XDEVICE (device), own_selection)) |
| 290 selection_time = DEVMETH (XDEVICE (device), own_selection, | |
| 442 | 291 (selection_name, selection_value, |
| 458 | 292 how_to_add, data_type, owned_p)); |
| 414 | 293 else |
| 294 selection_time = Qnil; | |
| 295 | |
| 296 Fsetcar (XCDR (XCDR (selection_data)), selection_time); | |
| 297 | |
| 440 | 298 UNGCPRO; |
| 299 | |
| 414 | 300 return selection_value; |
| 301 } | |
| 302 | |
| 442 | 303 DEFUN ("register-selection-data-type", Fregister_selection_data_type, 1,2,0, /* |
| 304 Register a new selection data type DATA-TYPE, optionally on the specified | |
| 305 DEVICE. Returns the device-specific data type identifier, or nil if the | |
| 306 device does not support this feature or the registration fails. */ | |
| 307 (data_type, device)) | |
| 308 { | |
| 309 /* Check arguments */ | |
| 310 CHECK_STRING (data_type); | |
| 311 | |
| 312 if (NILP (device)) | |
| 313 device = Fselected_device (Qnil); | |
| 314 | |
| 315 if (HAS_DEVMETH_P (XDEVICE (device), register_selection_data_type)) | |
| 316 return DEVMETH (XDEVICE (device), register_selection_data_type, | |
| 317 (data_type)); | |
| 318 else | |
| 319 return Qnil; | |
| 320 } | |
| 321 | |
| 322 DEFUN ("selection-data-type-name", Fselection_data_type_name, 1, 2, 0, /* | |
| 323 Retrieve the name of the specified selection data type DATA-TYPE, optionally | |
| 324 on the specified DEVICE. Returns either a string or a symbol on success, and | |
| 325 nil if the device does not support this feature or the type is not known. */ | |
| 326 (data_type, device)) | |
| 327 { | |
| 328 if (NILP (device)) | |
| 329 device = Fselected_device (Qnil); | |
| 330 | |
| 331 if (HAS_DEVMETH_P (XDEVICE (device), selection_data_type_name)) | |
| 332 return DEVMETH (XDEVICE (device), selection_data_type_name, (data_type)); | |
| 333 else | |
| 334 return Qnil; | |
| 335 } | |
| 336 | |
| 337 DEFUN ("available-selection-types", Favailable_selection_types, 1, 2, 0, /* | |
| 338 Retrieve a list of currently available types of selection associated with | |
| 339 the given SELECTION-NAME, optionally on the specified DEVICE. This list | |
| 340 does not take into account any possible conversions that might take place, | |
| 341 so it should be taken as a minimal estimate of what is available. | |
| 342 */ | |
| 343 (selection_name, device)) | |
| 344 { | |
| 345 Lisp_Object types = Qnil, rest; | |
| 346 struct gcpro gcpro1; | |
| 347 | |
| 348 CHECK_SYMBOL (selection_name); | |
| 349 | |
| 350 if (NILP (device)) | |
| 351 device = Fselected_device (Qnil); | |
| 352 | |
| 353 GCPRO1 (types); | |
| 354 | |
| 355 /* First check the device */ | |
| 356 if (HAS_DEVMETH_P (XDEVICE (device), available_selection_types)) | |
| 357 types = DEVMETH (XDEVICE (device), available_selection_types, | |
| 358 (selection_name)); | |
| 359 | |
| 360 /* Now look in the list */ | |
| 361 rest = assq_no_quit (selection_name, Vselection_alist); | |
| 362 | |
| 363 if (NILP (rest)) | |
| 364 { | |
| 365 UNGCPRO; | |
| 366 | |
| 367 return types; | |
| 368 } | |
| 369 | |
| 370 /* Examine the types and cons them onto the front of the list */ | |
| 371 for (rest = XCAR (XCDR (rest)); !NILP (rest); rest = XCDR (rest)) | |
| 372 { | |
| 373 Lisp_Object value = XCDR (XCAR (rest)); | |
| 374 Lisp_Object type = XCAR (XCAR (rest)); | |
| 375 | |
| 376 types = Fcons (type, types); | |
| 377 | |
| 378 if ((STRINGP (value) || EXTENTP (value)) | |
| 379 && (NILP (type) || EQ (type, QSTRING) | |
| 380 || EQ (type, QTEXT) || EQ (type, QCOMPOUND_TEXT))) | |
| 381 types = Fcons (QTEXT, Fcons (QCOMPOUND_TEXT, Fcons (QSTRING, types))); | |
| 382 else if (INTP (value) && NILP (type)) | |
| 383 types = Fcons (QINTEGER, types); | |
| 384 else if (SYMBOLP (value) && NILP (type)) | |
| 385 types = Fcons (QATOM, types); | |
| 386 } | |
| 387 | |
| 388 UNGCPRO; | |
| 389 | |
| 390 return types; | |
| 391 } | |
| 392 | |
| 414 | 393 /* remove a selection from our local copy |
| 394 */ | |
| 395 void | |
| 396 handle_selection_clear (Lisp_Object selection_symbol) | |
| 397 { | |
| 442 | 398 Lisp_Object local_selection_data = assq_no_quit (selection_symbol, |
| 399 Vselection_alist); | |
| 414 | 400 |
| 401 /* Well, we already believe that we don't own it, so that's just fine. */ | |
| 402 if (NILP (local_selection_data)) return; | |
| 403 | |
|
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5176
diff
changeset
|
404 /* Otherwise, we're really honest and truly being told to drop it. */ |
|
8608eadee6ba
Move #'delq, #'delete to Lisp, adding support for sequences.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5176
diff
changeset
|
405 Vselection_alist = delq_no_quit (local_selection_data, Vselection_alist); |
| 414 | 406 |
| 407 /* Let random lisp code notice that the selection has been stolen. | |
| 408 */ | |
| 409 { | |
| 410 Lisp_Object rest; | |
| 411 Lisp_Object val = Vlost_selection_hooks; | |
| 412 if (!UNBOUNDP (val) && !NILP (val)) | |
| 413 { | |
| 414 if (CONSP (val) && !EQ (XCAR (val), Qlambda)) | |
| 415 for (rest = val; !NILP (rest); rest = Fcdr (rest)) | |
| 416 call1 (Fcar (rest), selection_symbol); | |
| 417 else | |
| 418 call1 (val, selection_symbol); | |
| 419 } | |
| 420 } | |
| 421 } | |
| 422 | |
| 423 DEFUN ("disown-selection-internal", Fdisown_selection_internal, 1, 3, 0, /* | |
| 424 If we own the named selection, then disown it (make there be no selection). | |
| 425 */ | |
| 426 (selection_name, selection_time, device)) | |
| 427 { | |
| 428 if (NILP (assq_no_quit (selection_name, Vselection_alist))) | |
| 429 return Qnil; /* Don't disown the selection when we're not the owner. */ | |
| 430 | |
| 431 if (NILP (device)) | |
| 432 device = Fselected_device (Qnil); | |
| 433 | |
| 434 MAYBE_DEVMETH (XDEVICE (device), disown_selection, | |
| 435 (selection_name, selection_time)); | |
| 442 | 436 |
| 414 | 437 handle_selection_clear (selection_name); |
| 438 | |
| 439 return Qt; | |
| 440 } | |
| 441 | |
| 442 DEFUN ("selection-owner-p", Fselection_owner_p, 0, 1, 0, /* | |
| 444 | 443 Return t if the current emacs process owns SELECTION. |
| 444 SELECTION should be the name of the selection in question, typically one of | |
| 414 | 445 the symbols PRIMARY, SECONDARY, or CLIPBOARD. (For convenience, the symbol |
| 446 nil is the same as PRIMARY, and t is the same as SECONDARY.) | |
| 447 */ | |
| 448 (selection)) | |
| 449 { | |
| 450 CHECK_SYMBOL (selection); | |
| 451 if (EQ (selection, Qnil)) selection = QPRIMARY; | |
| 452 else if (EQ (selection, Qt)) selection = QSECONDARY; | |
| 453 | |
| 454 return NILP (Fassq (selection, Vselection_alist)) ? Qnil : Qt; | |
| 455 } | |
| 456 | |
| 442 | 457 DEFUN ("selection-exists-p", Fselection_exists_p, 0, 3, 0, /* |
| 444 | 458 Whether there is currently an owner for SELECTION. |
| 459 SELECTION should be the name of the selection in question, typically one of | |
| 414 | 460 the symbols PRIMARY, SECONDARY, or CLIPBOARD. (For convenience, the symbol |
| 461 nil is the same as PRIMARY, and t is the same as SECONDARY.) | |
| 444 | 462 Optionally, the window-system DATA-TYPE and the DEVICE may be specified. |
| 414 | 463 */ |
| 442 | 464 (selection, data_type, device)) |
| 414 | 465 { |
| 466 CHECK_SYMBOL (selection); | |
| 442 | 467 if (NILP (data_type) |
| 468 && !NILP (Fselection_owner_p (selection))) | |
| 414 | 469 return Qt; |
| 470 | |
| 471 if (NILP (device)) | |
| 472 device = Fselected_device (Qnil); | |
| 473 | |
| 474 return HAS_DEVMETH_P (XDEVICE (device), selection_exists_p) ? | |
| 442 | 475 DEVMETH (XDEVICE (device), selection_exists_p, (selection, data_type)) |
| 414 | 476 : Qnil; |
| 477 } | |
| 478 | |
| 2620 | 479 Lisp_Object |
| 480 get_selection_raw_time(Lisp_Object selection) | |
| 481 { | |
| 482 Lisp_Object local_value = assq_no_quit (selection, Vselection_alist); | |
| 483 | |
| 484 if (!NILP (local_value)) | |
| 485 { | |
| 486 return XCAR (XCDR (XCDR (local_value))); | |
| 487 } | |
| 488 return Qnil; | |
| 489 } | |
| 490 | |
| 442 | 491 /* Get the timestamp of the given selection */ |
| 2620 | 492 DEFUN ("get-xemacs-selection-timestamp", Fget_selection_timestamp, 1, 1, 0, /* |
| 2757 | 493 Return timestamp for SELECTION, if it belongs to XEmacs and exists. |
| 2620 | 494 |
| 495 The timestamp is a cons of two integers, the first being the higher-order | |
| 496 sixteen bits of the device-specific thirty-two-bit quantity, the second | |
| 497 being the lower-order sixteen bits of same. Expect to see this API change | |
| 498 when and if redisplay on a window system with timestamps wider than 32bits | |
| 499 happens. | |
| 442 | 500 */ |
| 501 (selection)) | |
| 502 { | |
| 2620 | 503 Lisp_Object val = get_selection_raw_time(selection); |
| 442 | 504 |
| 2620 | 505 if (!NILP (val)) |
| 506 { | |
| 507 return word_to_lisp(* (UINT_32_BIT *) XOPAQUE_DATA (val)); | |
| 508 } | |
| 442 | 509 |
| 510 return Qnil; | |
| 511 } | |
| 512 | |
| 414 | 513 /* Request the selection value from the owner. If we are the owner, |
| 843 | 514 simply return our selection value. If we are not the owner, this |
| 515 will block until all of the data has arrived. | |
| 414 | 516 */ |
| 517 DEFUN ("get-selection-internal", Fget_selection_internal, 2, 3, 0, /* | |
| 518 Return text selected from some window-system window. | |
| 444 | 519 SELECTION is a symbol, typically PRIMARY, SECONDARY, or CLIPBOARD. |
| 520 TARGET-TYPE is the type of data desired, typically STRING or COMPOUND_TEXT. | |
| 414 | 521 Under Mule, if the resultant data comes back as 8-bit data in type |
| 522 TEXT or COMPOUND_TEXT, it will be decoded as Compound Text. | |
| 523 */ | |
| 444 | 524 (selection, target_type, device)) |
| 414 | 525 { |
| 526 /* This function can GC */ | |
| 527 Lisp_Object val = Qnil; | |
| 528 struct gcpro gcpro1, gcpro2; | |
| 442 | 529 GCPRO2 (target_type, val); |
| 444 | 530 CHECK_SYMBOL (selection); |
| 414 | 531 |
| 532 if (NILP (device)) | |
| 533 device = Fselected_device (Qnil); | |
| 534 | |
| 442 | 535 #ifdef MULE |
| 536 if (NILP (target_type)) | |
| 537 target_type = QCOMPOUND_TEXT; | |
| 538 #else | |
| 539 if (NILP (target_type)) | |
| 540 target_type = QSTRING; | |
| 541 #endif | |
| 542 | |
| 414 | 543 #if 0 /* #### MULTIPLE doesn't work yet and probably never will */ |
| 544 if (CONSP (target_type) && | |
| 545 XCAR (target_type) == QMULTIPLE) | |
| 546 { | |
| 547 CHECK_VECTOR (XCDR (target_type)); | |
| 548 /* So we don't destructively modify this... */ | |
| 549 target_type = copy_multiple_data (target_type); | |
| 550 } | |
| 551 #endif | |
| 442 | 552 |
| 553 /* Used to check that target_type was a symbol. This is no longer | |
| 554 necessarily the case, because the type might be registered with | |
| 555 the device (in which case target_type would be a device-specific | |
| 556 identifier - probably an integer) - ajh */ | |
| 414 | 557 |
| 444 | 558 val = get_local_selection (selection, target_type); |
| 414 | 559 |
| 442 | 560 if (!NILP (val)) |
| 414 | 561 { |
| 442 | 562 /* If we get something from the local cache, we may need to convert |
| 563 it slightly - to do this, we call select-coerce */ | |
| 843 | 564 val = call3 (Qselect_coerce, selection, target_type, val); |
| 442 | 565 } |
| 566 else if (HAS_DEVMETH_P (XDEVICE (device), get_foreign_selection)) | |
| 567 { | |
| 568 /* Nothing in the local cache; try the window system */ | |
| 414 | 569 val = DEVMETH (XDEVICE (device), get_foreign_selection, |
| 444 | 570 (selection, target_type)); |
| 414 | 571 } |
| 442 | 572 |
| 573 if (NILP (val)) | |
| 414 | 574 { |
| 442 | 575 /* Still nothing. Try coercion. */ |
| 576 | |
| 577 /* Try looking in selection-coercible-types to see if any of | |
| 578 them are present for this selection. We try them *in order*; | |
| 579 the first for which a conversion succeeds gets returned. */ | |
| 580 EXTERNAL_LIST_LOOP_2 (element, Vselection_coercible_types) | |
| 414 | 581 { |
| 444 | 582 val = get_local_selection (selection, element); |
| 442 | 583 |
| 584 if (NILP (val)) | |
| 585 continue; | |
| 586 | |
| 444 | 587 val = call3 (Qselect_coerce, selection, target_type, val); |
| 442 | 588 |
| 589 if (!NILP (val)) | |
| 590 break; | |
| 414 | 591 } |
| 592 } | |
| 442 | 593 |
| 594 /* Used to call clean_local_selection here... but that really belonged | |
| 595 in Lisp (so the equivalent is now built-in to the INTEGER conversion | |
| 596 function select-convert-from-integer) - ajh */ | |
| 597 | |
| 414 | 598 UNGCPRO; |
| 599 return val; | |
| 600 } | |
| 601 | |
| 442 | 602 /* These are convenient interfaces to the lisp code in select.el; |
| 603 this way we can rename them easily rather than having to hunt everywhere. | |
| 604 Also, this gives us access to get_local_selection so that convert_out | |
| 605 can retrieve the internal selection value automatically if passed a | |
| 606 value of Qnil. */ | |
| 607 Lisp_Object | |
| 608 select_convert_in (Lisp_Object selection, | |
| 609 Lisp_Object type, | |
| 610 Lisp_Object value) | |
| 611 { | |
| 612 return call3 (Qselect_convert_in, selection, type, value); | |
| 613 } | |
| 614 | |
| 615 Lisp_Object | |
| 616 select_coerce (Lisp_Object selection, | |
| 617 Lisp_Object type, | |
| 618 Lisp_Object value) | |
| 619 { | |
| 620 return call3 (Qselect_coerce, selection, type, value); | |
| 621 } | |
| 622 | |
| 623 Lisp_Object | |
| 624 select_convert_out (Lisp_Object selection, | |
| 625 Lisp_Object type, | |
| 626 Lisp_Object value) | |
| 627 { | |
| 628 if (NILP (value)) | |
| 629 value = get_local_selection (selection, type); | |
| 630 | |
| 631 if (NILP (value)) | |
| 632 { | |
| 633 /* Try looking in selection-coercible-types to see if any of | |
| 634 them are present for this selection. We try them *in order*; | |
| 635 the first for which a conversion succeeds gets returned. */ | |
| 636 EXTERNAL_LIST_LOOP_2 (element, Vselection_coercible_types) | |
| 637 { | |
| 638 Lisp_Object ret; | |
| 639 | |
| 640 value = get_local_selection (selection, element); | |
| 641 | |
| 642 if (NILP (value)) | |
| 643 continue; | |
| 644 | |
| 645 ret = call3 (Qselect_convert_out, selection, type, value); | |
| 646 | |
| 647 if (!NILP (ret)) | |
| 648 return ret; | |
| 649 } | |
| 650 | |
| 651 return Qnil; | |
| 652 } | |
| 653 | |
| 654 return call3 (Qselect_convert_out, selection, type, value); | |
| 655 } | |
| 656 | |
| 657 | |
| 658 /* Gets called from kill-buffer; this lets us dispose of buffer-dependent | |
| 659 selections (or alternatively make them independent of the buffer) when | |
| 660 it gets vaped. */ | |
| 661 void | |
| 662 select_notify_buffer_kill (Lisp_Object buffer) | |
| 663 { | |
| 664 Lisp_Object rest; | |
| 665 struct gcpro gcpro1, gcpro2, gcpro3; | |
| 666 | |
| 667 /* For each element of Vselection_alist */ | |
| 668 for (rest = Vselection_alist; | |
| 669 !NILP (rest);) | |
| 670 { | |
| 671 Lisp_Object selection, values, prev = Qnil; | |
| 672 | |
| 673 selection = XCAR (rest); | |
| 674 | |
| 675 for (values = XCAR (XCDR (selection)); | |
| 676 !NILP (values); | |
| 677 values = XCDR (values)) | |
| 678 { | |
| 679 Lisp_Object value, handler_fn; | |
| 680 | |
| 681 /* Extract the (type . value) pair. */ | |
| 682 value = XCAR (values); | |
| 683 | |
| 684 /* Find the handler function (if any). */ | |
| 685 handler_fn = Fcdr (Fassq (XCAR (value), | |
| 686 Vselection_buffer_killed_alist)); | |
| 687 | |
| 688 if (!NILP (handler_fn)) | |
| 689 { | |
| 690 Lisp_Object newval; | |
| 691 | |
| 692 /* Protect ourselves, just in case some tomfool calls | |
| 693 own-selection from with the buffer-killed handler, then | |
| 694 causes a GC. Just as a note, *don't do this*. */ | |
| 695 GCPRO3 (rest, values, value); | |
| 696 | |
| 697 newval = call4 (handler_fn, XCAR (selection), XCAR (value), | |
| 698 XCDR (value), buffer); | |
| 699 | |
| 700 UNGCPRO; | |
| 701 | |
| 702 /* Set or delete the value (by destructively modifying | |
| 703 the list). */ | |
| 704 if (!NILP (newval)) | |
| 705 { | |
| 706 Fsetcdr (value, newval); | |
| 707 | |
| 708 prev = values; | |
| 709 } | |
| 710 else | |
| 711 { | |
| 712 if (NILP (prev)) | |
| 713 Fsetcar (XCDR (selection), XCDR (values)); | |
| 714 else | |
| 715 Fsetcdr (prev, XCDR (values)); | |
| 716 } | |
| 717 } | |
| 718 else | |
| 719 prev = values; | |
| 720 } | |
| 721 | |
| 722 /* If we have no values for this selection */ | |
| 723 if (NILP (XCAR (XCDR (selection)))) | |
| 724 { | |
| 725 /* Move on to the next element *first* */ | |
| 726 rest = XCDR (rest); | |
| 727 | |
| 728 /* Protect it and disown this selection */ | |
| 729 GCPRO1 (rest); | |
| 730 | |
| 731 Fdisown_selection_internal (XCAR (selection), Qnil, Qnil); | |
| 732 | |
| 733 UNGCPRO; | |
| 734 } | |
| 735 else | |
| 736 rest = XCDR (rest); | |
| 737 } | |
| 738 } | |
| 739 | |
| 740 | |
| 414 | 741 void |
| 742 syms_of_select (void) | |
| 743 { | |
| 744 DEFSUBR (Fown_selection_internal); | |
| 745 DEFSUBR (Fget_selection_internal); | |
| 442 | 746 DEFSUBR (Fget_selection_timestamp); |
| 414 | 747 DEFSUBR (Fselection_exists_p); |
| 748 DEFSUBR (Fdisown_selection_internal); | |
| 749 DEFSUBR (Fselection_owner_p); | |
| 442 | 750 DEFSUBR (Favailable_selection_types); |
| 751 DEFSUBR (Fregister_selection_data_type); | |
| 752 DEFSUBR (Fselection_data_type_name); | |
| 414 | 753 |
| 442 | 754 /* Lisp Functions */ |
| 563 | 755 DEFSYMBOL (Qselect_convert_in); |
| 756 DEFSYMBOL (Qselect_convert_out); | |
| 757 DEFSYMBOL (Qselect_coerce); | |
| 442 | 758 |
| 759 /* X Atoms */ | |
| 563 | 760 DEFSYMBOL (QPRIMARY); |
| 761 DEFSYMBOL (QSECONDARY); | |
| 762 DEFSYMBOL (QSTRING); | |
| 763 DEFSYMBOL (QINTEGER); | |
| 764 DEFSYMBOL (QCLIPBOARD); | |
| 765 DEFSYMBOL (QTIMESTAMP); | |
| 766 DEFSYMBOL (QTEXT); | |
| 767 DEFSYMBOL (QDELETE); | |
| 768 DEFSYMBOL (QMULTIPLE); | |
| 769 DEFSYMBOL (QINCR); | |
| 414 | 770 defsymbol (&QEMACS_TMP, "_EMACS_TMP_"); |
| 563 | 771 DEFSYMBOL (QTARGETS); |
| 772 DEFSYMBOL (QATOM); | |
| 414 | 773 defsymbol (&QATOM_PAIR, "ATOM_PAIR"); |
| 774 defsymbol (&QCOMPOUND_TEXT, "COMPOUND_TEXT"); | |
| 563 | 775 DEFSYMBOL (QNULL); |
| 414 | 776 |
| 442 | 777 /* Windows formats - these all start with CF_ */ |
| 778 defsymbol (&QCF_TEXT, "CF_TEXT"); | |
| 779 defsymbol (&QCF_BITMAP, "CF_BITMAP"); | |
| 780 defsymbol (&QCF_METAFILEPICT, "CF_METAFILEPICT"); | |
| 781 defsymbol (&QCF_SYLK, "CF_SYLK"); | |
| 782 defsymbol (&QCF_DIF, "CF_DIF"); | |
| 783 defsymbol (&QCF_TIFF, "CF_TIFF"); | |
| 784 defsymbol (&QCF_OEMTEXT, "CF_OEMTEXT"); | |
| 785 defsymbol (&QCF_DIB, "CF_DIB"); | |
| 786 defsymbol (&QCF_DIBV5, "CF_DIBV5"); | |
| 787 defsymbol (&QCF_PALETTE, "CF_PALETTE"); | |
| 788 defsymbol (&QCF_PENDATA, "CF_PENDATA"); | |
| 789 defsymbol (&QCF_RIFF, "CF_RIFF"); | |
| 790 defsymbol (&QCF_WAVE, "CF_WAVE"); | |
| 791 defsymbol (&QCF_UNICODETEXT, "CF_UNICODETEXT"); | |
| 792 defsymbol (&QCF_ENHMETAFILE, "CF_ENHMETAFILE"); | |
| 793 defsymbol (&QCF_HDROP, "CF_HDROP"); | |
| 794 defsymbol (&QCF_LOCALE, "CF_LOCALE"); | |
| 795 defsymbol (&QCF_OWNERDISPLAY, "CF_OWNERDISPLAY"); | |
| 796 defsymbol (&QCF_DSPTEXT, "CF_DSPTEXT"); | |
| 797 defsymbol (&QCF_DSPBITMAP, "CF_DSPBITMAP"); | |
| 798 defsymbol (&QCF_DSPMETAFILEPICT, "CF_DSPMETAFILEPICT"); | |
| 799 defsymbol (&QCF_DSPENHMETAFILE, "CF_DSPENHMETAFILE"); | |
| 800 | |
| 801 /* Selection strategies */ | |
| 563 | 802 DEFSYMBOL (Qreplace_all); |
| 803 DEFSYMBOL (Qreplace_existing); | |
| 442 | 804 |
| 563 | 805 DEFERROR_STANDARD (Qselection_conversion_error, Qconversion_error); |
| 414 | 806 } |
| 807 | |
| 808 void | |
| 809 vars_of_select (void) | |
| 810 { | |
| 811 Vselection_alist = Qnil; | |
| 812 staticpro (&Vselection_alist); | |
| 813 | |
| 442 | 814 DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_out_alist /* |
| 815 An alist associating selection-types (such as STRING and TIMESTAMP) with | |
| 816 functions. This is an alias for `selection-converter-out-alist', and should | |
| 817 be considered obsolete. Use the new name instead. */ ); | |
| 818 | |
| 819 DEFVAR_LISP ("selection-converter-out-alist", | |
| 820 &Vselection_converter_out_alist /* | |
| 414 | 821 An alist associating selection-types (such as STRING and TIMESTAMP) with |
| 822 functions. These functions will be called with three args: the name | |
| 823 of the selection (typically PRIMARY, SECONDARY, or CLIPBOARD); a | |
| 824 desired type to which the selection should be converted; and the local | |
| 442 | 825 selection value (whatever had been passed to `own-selection'). |
| 826 | |
| 827 The return type of these functions depends upon the device in question; | |
| 828 for mswindows, a string should be returned containing data in the requested | |
| 829 format, or nil to indicate that the conversion could not be done. Additionally, | |
| 830 it is permissible to return a cons of the form (DATA-TYPE . STRING) suggesting | |
| 831 a new data type to use instead. | |
| 832 | |
| 833 For X, the return value should be one of: | |
| 414 | 834 |
| 835 -- nil (the conversion could not be done) | |
| 836 -- a cons of a symbol and any of the following values; the symbol | |
| 837 explicitly specifies the type that will be sent. | |
| 838 -- a string (If the type is not specified, then if Mule support exists, | |
| 839 the string will be converted to Compound Text and sent in | |
| 3025 | 840 the `COMPOUND_TEXT' format; otherwise (no Mule support), |
| 841 the string will be left as-is and sent in the `STRING' | |
| 414 | 842 format. If the type is specified, the string will be |
| 843 left as-is (or converted to binary format under Mule). | |
| 844 In all cases, 8-bit data it sent.) | |
| 845 -- a character (With Mule support, will be converted to Compound Text | |
| 846 whether or not a type is specified. If a type is not | |
| 3025 | 847 specified, a type of `STRING' or `COMPOUND_TEXT' will be |
| 414 | 848 sent, as for strings.) |
| 3025 | 849 -- the symbol `NULL' (Indicates that there is no meaningful return value. |
| 850 Empty 32-bit data with a type of `NULL' will be sent.) | |
| 414 | 851 -- a symbol (Will be converted into an atom. If the type is not specified, |
| 3025 | 852 a type of `ATOM' will be sent.) |
| 414 | 853 -- an integer (Will be converted into a 16-bit or 32-bit integer depending |
| 854 on the value. If the type is not specified, a type of | |
| 3025 | 855 `INTEGER' will be sent.) |
| 414 | 856 -- a cons (HIGH . LOW) of integers (Will be converted into a 32-bit integer. |
| 857 If the type is not specified, a type of | |
| 3025 | 858 `INTEGER' will be sent.) |
| 414 | 859 -- a vector of symbols (Will be converted into a list of atoms. If the type |
| 3025 | 860 is not specified, a type of `ATOM' will be sent.) |
| 414 | 861 -- a vector of integers (Will be converted into a list of 16-bit integers. |
| 3025 | 862 If the type is not specified, a type of `INTEGER' |
| 414 | 863 will be sent.) |
| 864 -- a vector of integers and/or conses (HIGH . LOW) of integers | |
| 865 (Will be converted into a list of 16-bit integers. | |
| 3025 | 866 If the type is not specified, a type of `INTEGER' |
| 442 | 867 will be sent.) |
| 868 */ ); | |
| 869 Vselection_converter_out_alist = Qnil; | |
| 870 | |
| 871 DEFVAR_LISP ("selection-converter-in-alist", | |
| 872 &Vselection_converter_in_alist /* | |
| 873 An alist associating selection-types (such as STRING and TIMESTAMP) with | |
| 874 functions. These functions will be called with three args: the name | |
| 875 of the selection (typically PRIMARY, SECONDARY or CLIPBOARD); the | |
| 876 type from which the selection should be converted; and the selection | |
| 877 value. These functions should return a suitable representation of the | |
| 878 value, or nil to indicate that the conversion was not possible. | |
| 879 | |
| 880 See also `selection-converter-out-alist'. */ ); | |
| 881 Vselection_converter_in_alist = Qnil; | |
| 882 | |
| 883 DEFVAR_LISP ("selection-coercion-alist", | |
| 884 &Vselection_coercion_alist /* | |
| 885 An alist associating selection-types (such as STRING and TIMESTAMP) with | |
| 886 functions. These functions will be called with three args; the name | |
| 887 of the selection (typically PRIMARY, SECONDARY or CLIPBOARD); the type | |
| 888 from which the selection should be converted, and the selection value. | |
| 889 The value passed will be *exactly the same value* that was given to | |
| 890 `own-selection'; it should be converted into something suitable for | |
| 891 return to a program calling `get-selection' with the appropriate | |
| 892 parameters. | |
| 893 | |
| 894 See also `selection-converter-in-alist' and | |
| 895 `selection-converter-out-alist'. */); | |
| 896 Vselection_coercion_alist = Qnil; | |
| 897 | |
| 898 DEFVAR_LISP ("selection-appender-alist", | |
| 899 &Vselection_appender_alist /* | |
| 900 An alist associating selection-types (such as STRING and TIMESTAMP) with | |
| 901 functions. These functions will be called with four args; the name | |
| 902 of the selection (typically PRIMARY, SECONDARY or CLIPBOARD); the type | |
| 903 of the selection; and two selection values. The functions are expected to | |
| 904 return a value representing the catenation of the two values, or nil to | |
| 905 indicate that this was not possible. */ ); | |
| 906 Vselection_appender_alist = Qnil; | |
| 907 | |
| 908 DEFVAR_LISP ("selection-buffer-killed-alist", | |
| 909 &Vselection_buffer_killed_alist /* | |
| 910 An alist associating selection-types (such as STRING and TIMESTAMP) with | |
| 911 functions. These functions will be called whenever a buffer is killed, | |
| 912 with four args: the name of the selection (typically PRIMARY, SECONDARY | |
| 913 or CLIPBOARD); the type of the selection; the value of the selection; and | |
| 914 the buffer that has just been killed. These functions should return a new | |
| 915 selection value, or nil to indicate that the selection value should be | |
| 916 deleted. */ ); | |
| 917 Vselection_buffer_killed_alist = Qnil; | |
| 918 | |
| 919 DEFVAR_LISP ("selection-coercible-types", | |
| 920 &Vselection_coercible_types /* | |
| 921 A list of selection types that are coercible---that is, types that may be | |
| 922 automatically converted to another type. Selection values with types in this | |
| 923 list may be subject to conversion attempts to other types. */ ); | |
| 924 Vselection_coercible_types = Qnil; | |
| 414 | 925 |
| 926 DEFVAR_LISP ("lost-selection-hooks", &Vlost_selection_hooks /* | |
| 927 A function or functions to be called after we have been notified | |
| 928 that we have lost the selection. The function(s) will be called with one | |
| 929 argument, a symbol naming the selection (typically PRIMARY, SECONDARY, or | |
| 930 CLIPBOARD). | |
| 931 */ ); | |
| 932 Vlost_selection_hooks = Qunbound; | |
| 933 } |