dlls/mshtml/txtrange.c

   1 /*
   2  * Copyright 2006-2007 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20 #include <assert.h>
  21
  22 #define COBJMACROS
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winuser.h"
  27 #include "ole2.h"
  28 #include "mshtmcid.h"
  29
  30 #include "wine/debug.h"
  31
  32 #include "mshtml_private.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  35
  36 static const WCHAR brW[] = {'b','r',0};
  37 static const WCHAR hrW[] = {'h','r',0};
  38
  39 typedef struct {
  40     DispatchEx dispex;
  41     IHTMLTxtRange     IHTMLTxtRange_iface;
  42     IOleCommandTarget IOleCommandTarget_iface;
  43
  44     LONG ref;
  45
  46     nsIDOMRange *nsrange;
  47     HTMLDocumentNode *doc;
  48
  49     struct list entry;
  50 } HTMLTxtRange;
  51
  52 typedef struct {
  53     WCHAR *buf;
  54     DWORD len;
  55     DWORD size;
  56 } wstrbuf_t;
  57
  58 typedef struct {
  59     UINT16 type;
  60     nsIDOMNode *node;
  61     UINT32 off;
  62 } rangepoint_t;
  63
  64 typedef enum {
  65     RU_UNKNOWN,
  66     RU_CHAR,
  67     RU_WORD,
  68     RU_SENTENCE,
  69     RU_TEXTEDIT
  70 } range_unit_t;
  71
  72 static HTMLTxtRange *get_range_object(HTMLDocumentNode *doc, IHTMLTxtRange *iface)
  73 {
  74     HTMLTxtRange *iter;
  75
  76     LIST_FOR_EACH_ENTRY(iter, &doc->range_list, HTMLTxtRange, entry) {
  77         if(&iter->IHTMLTxtRange_iface == iface)
  78             return iter;
  79     }
  80
  81     ERR("Could not find range in document\n");
  82     return NULL;
  83 }
  84
  85 static range_unit_t string_to_unit(LPCWSTR str)
  86 {
  87     static const WCHAR characterW[] =
  88         {'c','h','a','r','a','c','t','e','r',0};
  89     static const WCHAR wordW[] =
  90         {'w','o','r','d',0};
  91     static const WCHAR sentenceW[] =
  92         {'s','e','n','t','e','n','c','e',0};
  93     static const WCHAR texteditW[] =
  94         {'t','e','x','t','e','d','i','t',0};
  95
  96     if(!strcmpiW(str, characterW))  return RU_CHAR;
  97     if(!strcmpiW(str, wordW))       return RU_WORD;
  98     if(!strcmpiW(str, sentenceW))   return RU_SENTENCE;
  99     if(!strcmpiW(str, texteditW))   return RU_TEXTEDIT;
 100
 101     return RU_UNKNOWN;
 102 }
 103
 104 static int string_to_nscmptype(LPCWSTR str)
 105 {
 106     static const WCHAR seW[] = {'S','t','a','r','t','T','o','E','n','d',0};
 107     static const WCHAR ssW[] = {'S','t','a','r','t','T','o','S','t','a','r','t',0};
 108     static const WCHAR esW[] = {'E','n','d','T','o','S','t','a','r','t',0};
 109     static const WCHAR eeW[] = {'E','n','d','T','o','E','n','d',0};
 110
 111     if(!strcmpiW(str, seW))  return NS_START_TO_END;
 112     if(!strcmpiW(str, ssW))  return NS_START_TO_START;
 113     if(!strcmpiW(str, esW))  return NS_END_TO_START;
 114     if(!strcmpiW(str, eeW))  return NS_END_TO_END;
 115
 116     return -1;
 117 }
 118
 119 static UINT16 get_node_type(nsIDOMNode *node)
 120 {
 121     UINT16 type = 0;
 122
 123     if(node)
 124         nsIDOMNode_GetNodeType(node, &type);
 125
 126     return type;
 127 }
 128
 129 static void get_text_node_data(nsIDOMNode *node, nsAString *nsstr, const PRUnichar **str)
 130 {
 131     nsIDOMText *nstext;
 132     nsresult nsres;
 133
 134     nsres = nsIDOMNode_QueryInterface(node, &IID_nsIDOMText, (void**)&nstext);
 135     assert(nsres == NS_OK);
 136
 137     nsAString_Init(nsstr, NULL);
 138     nsres = nsIDOMText_GetData(nstext, nsstr);
 139     nsIDOMText_Release(nstext);
 140     if(NS_FAILED(nsres))
 141         ERR("GetData failed: %08x\n", nsres);
 142
 143     nsAString_GetData(nsstr, str);
 144 }
 145
 146 static nsIDOMNode *get_child_node(nsIDOMNode *node, UINT32 off)
 147 {
 148     nsIDOMNodeList *node_list;
 149     nsIDOMNode *ret = NULL;
 150
 151     nsIDOMNode_GetChildNodes(node, &node_list);
 152     nsIDOMNodeList_Item(node_list, off, &ret);
 153     nsIDOMNodeList_Release(node_list);
 154
 155     return ret;
 156 }
 157
 158 /* This is very inefficient, but there is no faster way to compute index in
 159  * child node list using public API. Gecko has internal nsINode::IndexOf
 160  * function that we could consider exporting and use instead. */
 161 static int get_child_index(nsIDOMNode *parent, nsIDOMNode *child)
 162 {
 163     nsIDOMNodeList *node_list;
 164     nsIDOMNode *node;
 165     int ret = 0;
 166     nsresult nsres;
 167
 168     nsres = nsIDOMNode_GetChildNodes(parent, &node_list);
 169     assert(nsres == NS_OK);
 170
 171     while(1) {
 172         nsres = nsIDOMNodeList_Item(node_list, ret, &node);
 173         assert(nsres == NS_OK && node);
 174         if(node == child) {
 175             nsIDOMNode_Release(node);
 176             break;
 177         }
 178         nsIDOMNode_Release(node);
 179         ret++;
 180     }
 181
 182     nsIDOMNodeList_Release(node_list);
 183     return ret;
 184 }
 185
 186 static void init_rangepoint(rangepoint_t *rangepoint, nsIDOMNode *node, UINT32 off)
 187 {
 188     nsIDOMNode_AddRef(node);
 189
 190     rangepoint->type = get_node_type(node);
 191     rangepoint->node = node;
 192     rangepoint->off = off;
 193 }
 194
 195 static inline void free_rangepoint(rangepoint_t *rangepoint)
 196 {
 197     nsIDOMNode_Release(rangepoint->node);
 198 }
 199
 200 static inline BOOL rangepoint_cmp(const rangepoint_t *point1, const rangepoint_t *point2)
 201 {
 202     return point1->node == point2->node && point1->off == point2->off;
 203 }
 204
 205 static BOOL rangepoint_next_node(rangepoint_t *iter)
 206 {
 207     nsIDOMNode *node;
 208     UINT32 off;
 209     nsresult nsres;
 210
 211     /* Try to move to the child node. */
 212     node = get_child_node(iter->node, iter->off);
 213     if(node) {
 214         free_rangepoint(iter);
 215         init_rangepoint(iter, node, 0);
 216         nsIDOMNode_Release(node);
 217         return TRUE;
 218     }
 219
 220     /* There are no more children in the node. Move to parent. */
 221     nsres = nsIDOMNode_GetParentNode(iter->node, &node);
 222     assert(nsres == NS_OK);
 223     if(!node)
 224         return FALSE;
 225
 226     off = get_child_index(node, iter->node)+1;
 227     free_rangepoint(iter);
 228     init_rangepoint(iter, node, off);
 229     nsIDOMNode_Release(node);
 230     return TRUE;
 231 }
 232
 233 static UINT32 get_child_count(nsIDOMNode *node)
 234 {
 235     nsIDOMNodeList *node_list;
 236     UINT32 ret;
 237     nsresult nsres;
 238
 239     nsres = nsIDOMNode_GetChildNodes(node, &node_list);
 240     assert(nsres == NS_OK);
 241
 242     nsres = nsIDOMNodeList_GetLength(node_list, &ret);
 243     nsIDOMNodeList_Release(node_list);
 244     assert(nsres == NS_OK);
 245
 246     return ret;
 247 }
 248
 249 static UINT32 get_text_length(nsIDOMNode *node)
 250 {
 251     nsIDOMText *nstext;
 252     UINT32 ret;
 253     nsresult nsres;
 254
 255     nsres = nsIDOMNode_QueryInterface(node, &IID_nsIDOMText, (void**)&nstext);
 256     assert(nsres == NS_OK);
 257
 258     nsres = nsIDOMText_GetLength(nstext, &ret);
 259     nsIDOMText_Release(nstext);
 260     assert(nsres == NS_OK);
 261
 262     return ret;
 263 }
 264
 265 static BOOL rangepoint_prev_node(rangepoint_t *iter)
 266 {
 267     nsIDOMNode *node;
 268     UINT32 off;
 269     nsresult nsres;
 270
 271     /* Try to move to the child node. */
 272     if(iter->off) {
 273         node = get_child_node(iter->node, iter->off-1);
 274         assert(node != NULL);
 275
 276         off = get_node_type(node) == TEXT_NODE ? get_text_length(node) : get_child_count(node);
 277         free_rangepoint(iter);
 278         init_rangepoint(iter, node, off);
 279         nsIDOMNode_Release(node);
 280         return TRUE;
 281     }
 282
 283     /* There are no more children in the node. Move to parent. */
 284     nsres = nsIDOMNode_GetParentNode(iter->node, &node);
 285     assert(nsres == NS_OK);
 286     if(!node)
 287         return FALSE;
 288
 289     off = get_child_index(node, iter->node);
 290     free_rangepoint(iter);
 291     init_rangepoint(iter, node, off);
 292     return TRUE;
 293 }
 294
 295 static void get_start_point(HTMLTxtRange *This, rangepoint_t *ret)
 296 {
 297     nsIDOMNode *node;
 298     LONG off;
 299
 300     nsIDOMRange_GetStartContainer(This->nsrange, &node);
 301     nsIDOMRange_GetStartOffset(This->nsrange, &off);
 302
 303     init_rangepoint(ret, node, off);
 304
 305     nsIDOMNode_Release(node);
 306 }
 307
 308 static void get_end_point(HTMLTxtRange *This, rangepoint_t *ret)
 309 {
 310     nsIDOMNode *node;
 311     LONG off;
 312
 313     nsIDOMRange_GetEndContainer(This->nsrange, &node);
 314     nsIDOMRange_GetEndOffset(This->nsrange, &off);
 315
 316     init_rangepoint(ret, node, off);
 317
 318     nsIDOMNode_Release(node);
 319 }
 320
 321 static void set_start_point(HTMLTxtRange *This, const rangepoint_t *start)
 322 {
 323     nsresult nsres = nsIDOMRange_SetStart(This->nsrange, start->node, start->off);
 324     if(NS_FAILED(nsres))
 325         ERR("failed: %08x\n", nsres);
 326 }
 327
 328 static void set_end_point(HTMLTxtRange *This, const rangepoint_t *end)
 329 {
 330     nsresult nsres = nsIDOMRange_SetEnd(This->nsrange, end->node, end->off);
 331     if(NS_FAILED(nsres))
 332         ERR("failed: %08x\n", nsres);
 333 }
 334
 335 static BOOL is_elem_tag(nsIDOMNode *node, LPCWSTR istag)
 336 {
 337     nsIDOMElement *elem;
 338     nsAString tag_str;
 339     const PRUnichar *tag;
 340     BOOL ret = FALSE;
 341     nsresult nsres;
 342
 343     nsres = nsIDOMNode_QueryInterface(node, &IID_nsIDOMElement, (void**)&elem);
 344     if(NS_FAILED(nsres))
 345         return FALSE;
 346
 347     nsAString_Init(&tag_str, NULL);
 348     nsIDOMElement_GetTagName(elem, &tag_str);
 349     nsIDOMElement_Release(elem);
 350     nsAString_GetData(&tag_str, &tag);
 351
 352     ret = !strcmpiW(tag, istag);
 353
 354     nsAString_Finish(&tag_str);
 355
 356     return ret;
 357 }
 358
 359 static inline BOOL wstrbuf_init(wstrbuf_t *buf)
 360 {
 361     buf->len = 0;
 362     buf->size = 16;
 363     buf->buf = heap_alloc(buf->size * sizeof(WCHAR));
 364     if (!buf->buf) return FALSE;
 365     *buf->buf = 0;
 366     return TRUE;
 367 }
 368
 369 static inline void wstrbuf_finish(wstrbuf_t *buf)
 370 {
 371     heap_free(buf->buf);
 372 }
 373
 374 static void wstrbuf_append_len(wstrbuf_t *buf, LPCWSTR str, int len)
 375 {
 376     if(buf->len+len >= buf->size) {
 377         buf->size = 2*buf->size+len;
 378         buf->buf = heap_realloc(buf->buf, buf->size * sizeof(WCHAR));
 379     }
 380
 381     memcpy(buf->buf+buf->len, str, len*sizeof(WCHAR));
 382     buf->len += len;
 383     buf->buf[buf->len] = 0;
 384 }
 385
 386 static void wstrbuf_append_nodetxt(wstrbuf_t *buf, LPCWSTR str, int len)
 387 {
 388     const WCHAR *s = str;
 389     WCHAR *d;
 390
 391     TRACE("%s\n", debugstr_wn(str, len));
 392
 393     if(buf->len+len >= buf->size) {
 394         buf->size = 2*buf->size+len;
 395         buf->buf = heap_realloc(buf->buf, buf->size * sizeof(WCHAR));
 396     }
 397
 398     if(buf->len && isspaceW(buf->buf[buf->len-1])) {
 399         while(s < str+len && isspaceW(*s))
 400             s++;
 401     }
 402
 403     d = buf->buf+buf->len;
 404     while(s < str+len) {
 405         if(isspaceW(*s)) {
 406             *d++ = ' ';
 407             s++;
 408             while(s < str+len && isspaceW(*s))
 409                 s++;
 410         }else {
 411             *d++ = *s++;
 412         }
 413     }
 414
 415     buf->len = d - buf->buf;
 416     *d = 0;
 417 }
 418
 419 static void wstrbuf_append_node(wstrbuf_t *buf, nsIDOMNode *node, BOOL ignore_text)
 420 {
 421
 422     switch(get_node_type(node)) {
 423     case TEXT_NODE: {
 424         nsIDOMText *nstext;
 425         nsAString data_str;
 426         const PRUnichar *data;
 427
 428         if(ignore_text)
 429             break;
 430
 431         nsIDOMNode_QueryInterface(node, &IID_nsIDOMText, (void**)&nstext);
 432
 433         nsAString_Init(&data_str, NULL);
 434         nsIDOMText_GetData(nstext, &data_str);
 435         nsAString_GetData(&data_str, &data);
 436         wstrbuf_append_nodetxt(buf, data, strlenW(data));
 437         nsAString_Finish(&data_str);
 438
 439         nsIDOMText_Release(nstext);
 440
 441         break;
 442     }
 443     case ELEMENT_NODE:
 444         if(is_elem_tag(node, brW)) {
 445             static const WCHAR endlW[] = {'\r','\n'};
 446             wstrbuf_append_len(buf, endlW, 2);
 447         }else if(is_elem_tag(node, hrW)) {
 448             static const WCHAR endl2W[] = {'\r','\n','\r','\n'};
 449             wstrbuf_append_len(buf, endl2W, 4);
 450         }
 451     }
 452 }
 453
 454 static void wstrbuf_append_node_rec(wstrbuf_t *buf, nsIDOMNode *node)
 455 {
 456     nsIDOMNode *iter, *tmp;
 457
 458     wstrbuf_append_node(buf, node, FALSE);
 459
 460     nsIDOMNode_GetFirstChild(node, &iter);
 461     while(iter) {
 462         wstrbuf_append_node_rec(buf, iter);
 463         nsIDOMNode_GetNextSibling(iter, &tmp);
 464         nsIDOMNode_Release(iter);
 465         iter = tmp;
 466     }
 467 }
 468
 469 static void range_to_string(HTMLTxtRange *This, wstrbuf_t *buf)
 470 {
 471     rangepoint_t end_pos, iter;
 472     cpp_bool collapsed;
 473
 474     nsIDOMRange_GetCollapsed(This->nsrange, &collapsed);
 475     if(collapsed) {
 476         wstrbuf_finish(buf);
 477         buf->buf = NULL;
 478         buf->size = 0;
 479         return;
 480     }
 481
 482     get_end_point(This, &end_pos);
 483     get_start_point(This, &iter);
 484
 485     do {
 486         if(iter.type == TEXT_NODE) {
 487             const PRUnichar *str;
 488             nsAString nsstr;
 489
 490             get_text_node_data(iter.node, &nsstr, &str);
 491
 492             if(iter.node == end_pos.node) {
 493                 wstrbuf_append_nodetxt(buf, str+iter.off, end_pos.off-iter.off);
 494                 nsAString_Finish(&nsstr);
 495                 break;
 496             }
 497
 498             wstrbuf_append_nodetxt(buf, str+iter.off, strlenW(str+iter.off));
 499             nsAString_Finish(&nsstr);
 500         }else {
 501             nsIDOMNode *node;
 502
 503             node = get_child_node(iter.node, iter.off);
 504             if(node) {
 505                 wstrbuf_append_node(buf, node, TRUE);
 506                 nsIDOMNode_Release(node);
 507             }
 508         }
 509
 510         if(!rangepoint_next_node(&iter)) {
 511             ERR("End of document?\n");
 512             break;
 513         }
 514     }while(!rangepoint_cmp(&iter, &end_pos));
 515
 516     free_rangepoint(&iter);
 517     free_rangepoint(&end_pos);
 518
 519     if(buf->len) {
 520         WCHAR *p;
 521
 522         for(p = buf->buf+buf->len-1; p >= buf->buf && isspaceW(*p); p--);
 523
 524         p = strchrW(p, '\r');
 525         if(p)
 526             *p = 0;
 527     }
 528 }
 529
 530 HRESULT get_node_text(HTMLDOMNode *node, BSTR *ret)
 531 {
 532     wstrbuf_t buf;
 533     HRESULT hres = S_OK;
 534
 535     if (!wstrbuf_init(&buf))
 536         return E_OUTOFMEMORY;
 537     wstrbuf_append_node_rec(&buf, node->nsnode);
 538     if(buf.buf) {
 539         *ret = SysAllocString(buf.buf);
 540         if(!*ret)
 541             hres = E_OUTOFMEMORY;
 542     } else {
 543         *ret = NULL;
 544     }
 545     wstrbuf_finish(&buf);
 546
 547     if(SUCCEEDED(hres))
 548         TRACE("ret %s\n", debugstr_w(*ret));
 549     return hres;
 550 }
 551
 552 static WCHAR move_next_char(rangepoint_t *iter)
 553 {
 554     rangepoint_t last_space;
 555     nsIDOMNode *node;
 556     WCHAR cspace = 0;
 557     const WCHAR *p;
 558
 559     do {
 560         switch(iter->type) {
 561         case TEXT_NODE: {
 562             const PRUnichar *str;
 563             nsAString nsstr;
 564             WCHAR c;
 565
 566             get_text_node_data(iter->node, &nsstr, &str);
 567             p = str+iter->off;
 568             if(!*p) {
 569                 nsAString_Finish(&nsstr);
 570                 break;
 571             }
 572
 573             c = *p;
 574             if(isspaceW(c)) {
 575                 while(isspaceW(*p))
 576                     p++;
 577
 578                 if(cspace)
 579                     free_rangepoint(&last_space);
 580                 else
 581                     cspace = ' ';
 582
 583                 iter->off = p-str;
 584                 c = *p;
 585                 nsAString_Finish(&nsstr);
 586                 if(!c) { /* continue to skip spaces */
 587                     init_rangepoint(&last_space, iter->node, iter->off);
 588                     break;
 589                 }
 590
 591                 return cspace;
 592             }else {
 593                 nsAString_Finish(&nsstr);
 594             }
 595
 596             /* If we have a non-space char and we're skipping spaces, stop and return the last found space. */
 597             if(cspace) {
 598                 free_rangepoint(iter);
 599                 *iter = last_space;
 600                 return cspace;
 601             }
 602
 603             iter->off++;
 604             return c;
 605         }
 606         case ELEMENT_NODE:
 607             node = get_child_node(iter->node, iter->off);
 608             if(!node)
 609                 break;
 610
 611             if(is_elem_tag(node, brW)) {
 612                 if(cspace) {
 613                     nsIDOMNode_Release(node);
 614                     free_rangepoint(iter);
 615                     *iter = last_space;
 616                     return cspace;
 617                 }
 618
 619                 cspace = '\n';
 620                 init_rangepoint(&last_space, iter->node, iter->off+1);
 621             }else if(is_elem_tag(node, hrW)) {
 622                 nsIDOMNode_Release(node);
 623                 if(cspace) {
 624                     free_rangepoint(iter);
 625                     *iter = last_space;
 626                     return cspace;
 627                 }
 628
 629                 iter->off++;
 630                 return '\n';
 631             }
 632
 633             nsIDOMNode_Release(node);
 634         }
 635     }while(rangepoint_next_node(iter));
 636
 637     return cspace;
 638 }
 639
 640 static WCHAR move_prev_char(rangepoint_t *iter)
 641 {
 642     rangepoint_t last_space;
 643     nsIDOMNode *node;
 644     WCHAR cspace = 0;
 645     const WCHAR *p;
 646
 647     do {
 648         switch(iter->type) {
 649         case TEXT_NODE: {
 650             const PRUnichar *str;
 651             nsAString nsstr;
 652             WCHAR c;
 653
 654             if(!iter->off)
 655                 break;
 656
 657             get_text_node_data(iter->node, &nsstr, &str);
 658
 659             p = str+iter->off-1;
 660             c = *p;
 661
 662             if(isspaceW(c)) {
 663                 while(p > str && isspaceW(*(p-1)))
 664                     p--;
 665
 666                 if(cspace)
 667                     free_rangepoint(&last_space);
 668                 else
 669                     cspace = ' ';
 670
 671                 iter->off = p-str;
 672                 nsAString_Finish(&nsstr);
 673                 if(p == str) { /* continue to skip spaces */
 674                     init_rangepoint(&last_space, iter->node, iter->off);
 675                     break;
 676                 }
 677
 678                 return cspace;
 679             }else {
 680                 nsAString_Finish(&nsstr);
 681             }
 682
 683             /* If we have a non-space char and we're skipping spaces, stop and return the last found space. */
 684             if(cspace) {
 685                 free_rangepoint(iter);
 686                 *iter = last_space;
 687                 return cspace;
 688             }
 689
 690             iter->off--;
 691             return c;
 692         }
 693         case ELEMENT_NODE:
 694             if(!iter->off)
 695                 break;
 696
 697             node = get_child_node(iter->node, iter->off-1);
 698             if(!node)
 699                 break;
 700
 701             if(is_elem_tag(node, brW)) {
 702                 if(cspace)
 703                     free_rangepoint(&last_space);
 704                 cspace = '\n';
 705                 init_rangepoint(&last_space, iter->node, iter->off-1);
 706             }else if(is_elem_tag(node, hrW)) {
 707                 nsIDOMNode_Release(node);
 708                 if(cspace) {
 709                     free_rangepoint(iter);
 710                     *iter = last_space;
 711                     return cspace;
 712                 }
 713
 714                 iter->off--;
 715                 return '\n';
 716             }
 717
 718             nsIDOMNode_Release(node);
 719         }
 720     }while(rangepoint_prev_node(iter));
 721
 722     if(cspace) {
 723         free_rangepoint(iter);
 724         *iter = last_space;
 725         return cspace;
 726     }
 727
 728     return 0;
 729 }
 730
 731 static LONG move_by_chars(rangepoint_t *iter, LONG cnt)
 732 {
 733     LONG ret = 0;
 734
 735     if(cnt >= 0) {
 736         while(ret < cnt && move_next_char(iter))
 737             ret++;
 738     }else {
 739         while(ret > cnt && move_prev_char(iter))
 740             ret--;
 741     }
 742
 743     return ret;
 744 }
 745
 746 static LONG find_prev_space(rangepoint_t *iter, BOOL first_space)
 747 {
 748     rangepoint_t prev;
 749     WCHAR c;
 750
 751     init_rangepoint(&prev, iter->node, iter->off);
 752     c = move_prev_char(&prev);
 753     if(!c || (first_space && isspaceW(c)))
 754         return FALSE;
 755
 756     do {
 757         free_rangepoint(iter);
 758         init_rangepoint(iter, prev.node, prev.off);
 759         c = move_prev_char(&prev);
 760     }while(c && !isspaceW(c));
 761
 762     free_rangepoint(&prev);
 763     return TRUE;
 764 }
 765
 766 static BOOL find_word_end(rangepoint_t *iter, BOOL is_collapsed)
 767 {
 768     rangepoint_t prev_iter;
 769     WCHAR c;
 770     BOOL ret = FALSE;
 771
 772     if(!is_collapsed) {
 773         init_rangepoint(&prev_iter, iter->node, iter->off);
 774         c = move_prev_char(&prev_iter);
 775         free_rangepoint(&prev_iter);
 776         if(isspaceW(c))
 777             return FALSE;
 778     }
 779
 780     do {
 781         init_rangepoint(&prev_iter, iter->node, iter->off);
 782         c = move_next_char(iter);
 783         if(c == '\n') {
 784             free_rangepoint(iter);
 785             *iter = prev_iter;
 786             return ret;
 787         }
 788         if(!c) {
 789             if(!ret)
 790                 ret = !rangepoint_cmp(iter, &prev_iter);
 791         }else {
 792             ret = TRUE;
 793         }
 794         free_rangepoint(&prev_iter);
 795     }while(c && !isspaceW(c));
 796
 797     return ret;
 798 }
 799
 800 static LONG move_by_words(rangepoint_t *iter, LONG cnt)
 801 {
 802     LONG ret = 0;
 803
 804     if(cnt >= 0) {
 805         WCHAR c;
 806
 807         while(ret < cnt && (c = move_next_char(iter))) {
 808             if(isspaceW(c))
 809                 ret++;
 810         }
 811     }else {
 812         while(ret > cnt && find_prev_space(iter, FALSE))
 813             ret--;
 814     }
 815
 816     return ret;
 817 }
 818
 819 static inline HTMLTxtRange *impl_from_IHTMLTxtRange(IHTMLTxtRange *iface)
 820 {
 821     return CONTAINING_RECORD(iface, HTMLTxtRange, IHTMLTxtRange_iface);
 822 }
 823
 824 static HRESULT WINAPI HTMLTxtRange_QueryInterface(IHTMLTxtRange *iface, REFIID riid, void **ppv)
 825 {
 826     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 827
 828     TRACE("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
 829
 830     if(IsEqualGUID(&IID_IUnknown, riid)) {
 831         *ppv = &This->IHTMLTxtRange_iface;
 832     }else if(IsEqualGUID(&IID_IHTMLTxtRange, riid)) {
 833         *ppv = &This->IHTMLTxtRange_iface;
 834     }else if(IsEqualGUID(&IID_IOleCommandTarget, riid)) {
 835         *ppv = &This->IOleCommandTarget_iface;
 836     }else if(dispex_query_interface(&This->dispex, riid, ppv)) {
 837         return *ppv ? S_OK : E_NOINTERFACE;
 838     }else {
 839         *ppv = NULL;
 840         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
 841         return E_NOINTERFACE;
 842     }
 843
 844     IUnknown_AddRef((IUnknown*)*ppv);
 845     return S_OK;
 846 }
 847
 848 static ULONG WINAPI HTMLTxtRange_AddRef(IHTMLTxtRange *iface)
 849 {
 850     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 851     LONG ref = InterlockedIncrement(&This->ref);
 852
 853     TRACE("(%p) ref=%d\n", This, ref);
 854
 855     return ref;
 856 }
 857
 858 static ULONG WINAPI HTMLTxtRange_Release(IHTMLTxtRange *iface)
 859 {
 860     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 861     LONG ref = InterlockedDecrement(&This->ref);
 862
 863     TRACE("(%p) ref=%d\n", This, ref);
 864
 865     if(!ref) {
 866         if(This->nsrange)
 867             nsIDOMRange_Release(This->nsrange);
 868         if(This->doc)
 869             list_remove(&This->entry);
 870         release_dispex(&This->dispex);
 871         heap_free(This);
 872     }
 873
 874     return ref;
 875 }
 876
 877 static HRESULT WINAPI HTMLTxtRange_GetTypeInfoCount(IHTMLTxtRange *iface, UINT *pctinfo)
 878 {
 879     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 880
 881     return IDispatchEx_GetTypeInfoCount(&This->dispex.IDispatchEx_iface, pctinfo);
 882 }
 883
 884 static HRESULT WINAPI HTMLTxtRange_GetTypeInfo(IHTMLTxtRange *iface, UINT iTInfo,
 885                                                LCID lcid, ITypeInfo **ppTInfo)
 886 {
 887     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 888
 889     return IDispatchEx_GetTypeInfo(&This->dispex.IDispatchEx_iface, iTInfo, lcid, ppTInfo);
 890 }
 891
 892 static HRESULT WINAPI HTMLTxtRange_GetIDsOfNames(IHTMLTxtRange *iface, REFIID riid,
 893                                                  LPOLESTR *rgszNames, UINT cNames,
 894                                                  LCID lcid, DISPID *rgDispId)
 895 {
 896     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 897
 898     return IDispatchEx_GetIDsOfNames(&This->dispex.IDispatchEx_iface, riid, rgszNames,
 899             cNames, lcid, rgDispId);
 900 }
 901
 902 static HRESULT WINAPI HTMLTxtRange_Invoke(IHTMLTxtRange *iface, DISPID dispIdMember,
 903                             REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams,
 904                             VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
 905 {
 906     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 907
 908     return IDispatchEx_Invoke(&This->dispex.IDispatchEx_iface, dispIdMember, riid,
 909             lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 910 }
 911
 912 static HRESULT WINAPI HTMLTxtRange_get_htmlText(IHTMLTxtRange *iface, BSTR *p)
 913 {
 914     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 915
 916     TRACE("(%p)->(%p)\n", This, p);
 917
 918     *p = NULL;
 919
 920     if(This->nsrange) {
 921         nsIDOMDocumentFragment *fragment;
 922         nsresult nsres;
 923
 924         nsres = nsIDOMRange_CloneContents(This->nsrange, &fragment);
 925         if(NS_SUCCEEDED(nsres)) {
 926             const PRUnichar *nstext;
 927             nsAString nsstr;
 928
 929             nsAString_Init(&nsstr, NULL);
 930             nsnode_to_nsstring((nsIDOMNode*)fragment, &nsstr);
 931             nsIDOMDocumentFragment_Release(fragment);
 932
 933             nsAString_GetData(&nsstr, &nstext);
 934             *p = SysAllocString(nstext);
 935
 936             nsAString_Finish(&nsstr);
 937         }
 938     }
 939
 940     if(!*p) {
 941         const WCHAR emptyW[] = {0};
 942         *p = SysAllocString(emptyW);
 943     }
 944
 945     TRACE("return %s\n", debugstr_w(*p));
 946     return S_OK;
 947 }
 948
 949 static HRESULT WINAPI HTMLTxtRange_put_text(IHTMLTxtRange *iface, BSTR v)
 950 {
 951     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 952     nsIDOMText *text_node;
 953     nsAString text_str;
 954     nsresult nsres;
 955
 956     TRACE("(%p)->(%s)\n", This, debugstr_w(v));
 957
 958     if(!This->doc)
 959         return MSHTML_E_NODOC;
 960
 961     nsAString_InitDepend(&text_str, v);
 962     nsres = nsIDOMHTMLDocument_CreateTextNode(This->doc->nsdoc, &text_str, &text_node);
 963     nsAString_Finish(&text_str);
 964     if(NS_FAILED(nsres)) {
 965         ERR("CreateTextNode failed: %08x\n", nsres);
 966         return S_OK;
 967     }
 968     nsres = nsIDOMRange_DeleteContents(This->nsrange);
 969     if(NS_FAILED(nsres))
 970         ERR("DeleteContents failed: %08x\n", nsres);
 971
 972     nsres = nsIDOMRange_InsertNode(This->nsrange, (nsIDOMNode*)text_node);
 973     if(NS_FAILED(nsres))
 974         ERR("InsertNode failed: %08x\n", nsres);
 975
 976     nsres = nsIDOMRange_SetEndAfter(This->nsrange, (nsIDOMNode*)text_node);
 977     if(NS_FAILED(nsres))
 978         ERR("SetEndAfter failed: %08x\n", nsres);
 979
 980     return IHTMLTxtRange_collapse(&This->IHTMLTxtRange_iface, VARIANT_FALSE);
 981 }
 982
 983 static HRESULT WINAPI HTMLTxtRange_get_text(IHTMLTxtRange *iface, BSTR *p)
 984 {
 985     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
 986     wstrbuf_t buf;
 987
 988     TRACE("(%p)->(%p)\n", This, p);
 989
 990     *p = NULL;
 991     if(!This->nsrange)
 992         return S_OK;
 993
 994     if (!wstrbuf_init(&buf))
 995         return E_OUTOFMEMORY;
 996     range_to_string(This, &buf);
 997     if (buf.buf)
 998         *p = SysAllocString(buf.buf);
 999     wstrbuf_finish(&buf);
1000
1001     TRACE("ret %s\n", debugstr_w(*p));
1002     return S_OK;
1003 }
1004
1005 static HRESULT WINAPI HTMLTxtRange_parentElement(IHTMLTxtRange *iface, IHTMLElement **parent)
1006 {
1007     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1008     nsIDOMNode *nsnode, *tmp;
1009     HTMLDOMNode *node;
1010     HRESULT hres;
1011
1012     TRACE("(%p)->(%p)\n", This, parent);
1013
1014     nsIDOMRange_GetCommonAncestorContainer(This->nsrange, &nsnode);
1015     while(nsnode && get_node_type(nsnode) != ELEMENT_NODE) {
1016         nsIDOMNode_GetParentNode(nsnode, &tmp);
1017         nsIDOMNode_Release(nsnode);
1018         nsnode = tmp;
1019     }
1020
1021     if(!nsnode) {
1022         *parent = NULL;
1023         return S_OK;
1024     }
1025
1026     hres = get_node(This->doc, nsnode, TRUE, &node);
1027     nsIDOMNode_Release(nsnode);
1028     if(FAILED(hres))
1029         return hres;
1030
1031     hres = IHTMLDOMNode_QueryInterface(&node->IHTMLDOMNode_iface, &IID_IHTMLElement, (void**)parent);
1032     node_release(node);
1033     return hres;
1034 }
1035
1036 static HRESULT WINAPI HTMLTxtRange_duplicate(IHTMLTxtRange *iface, IHTMLTxtRange **Duplicate)
1037 {
1038     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1039     nsIDOMRange *nsrange = NULL;
1040     HRESULT hres;
1041
1042     TRACE("(%p)->(%p)\n", This, Duplicate);
1043
1044     nsIDOMRange_CloneRange(This->nsrange, &nsrange);
1045     hres = HTMLTxtRange_Create(This->doc, nsrange, Duplicate);
1046     nsIDOMRange_Release(nsrange);
1047
1048     return hres;
1049 }
1050
1051 static HRESULT WINAPI HTMLTxtRange_inRange(IHTMLTxtRange *iface, IHTMLTxtRange *Range,
1052         VARIANT_BOOL *InRange)
1053 {
1054     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1055     HTMLTxtRange *src_range;
1056     short nsret = 0;
1057     nsresult nsres;
1058
1059     TRACE("(%p)->(%p %p)\n", This, Range, InRange);
1060
1061     *InRange = VARIANT_FALSE;
1062
1063     src_range = get_range_object(This->doc, Range);
1064     if(!src_range)
1065         return E_FAIL;
1066
1067     nsres = nsIDOMRange_CompareBoundaryPoints(This->nsrange, NS_START_TO_START,
1068             src_range->nsrange, &nsret);
1069     if(NS_SUCCEEDED(nsres) && nsret <= 0) {
1070         nsres = nsIDOMRange_CompareBoundaryPoints(This->nsrange, NS_END_TO_END,
1071                 src_range->nsrange, &nsret);
1072         if(NS_SUCCEEDED(nsres) && nsret >= 0)
1073             *InRange = VARIANT_TRUE;
1074     }
1075
1076     if(NS_FAILED(nsres))
1077         ERR("CompareBoundaryPoints failed: %08x\n", nsres);
1078
1079     return S_OK;
1080 }
1081
1082 static HRESULT WINAPI HTMLTxtRange_isEqual(IHTMLTxtRange *iface, IHTMLTxtRange *Range,
1083         VARIANT_BOOL *IsEqual)
1084 {
1085     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1086     HTMLTxtRange *src_range;
1087     short nsret = 0;
1088     nsresult nsres;
1089
1090     TRACE("(%p)->(%p %p)\n", This, Range, IsEqual);
1091
1092     *IsEqual = VARIANT_FALSE;
1093
1094     src_range = get_range_object(This->doc, Range);
1095     if(!src_range)
1096         return E_FAIL;
1097
1098     nsres = nsIDOMRange_CompareBoundaryPoints(This->nsrange, NS_START_TO_START,
1099             src_range->nsrange, &nsret);
1100     if(NS_SUCCEEDED(nsres) && !nsret) {
1101         nsres = nsIDOMRange_CompareBoundaryPoints(This->nsrange, NS_END_TO_END,
1102                 src_range->nsrange, &nsret);
1103         if(NS_SUCCEEDED(nsres) && !nsret)
1104             *IsEqual = VARIANT_TRUE;
1105     }
1106
1107     if(NS_FAILED(nsres))
1108         ERR("CompareBoundaryPoints failed: %08x\n", nsres);
1109
1110     return S_OK;
1111 }
1112
1113 static HRESULT WINAPI HTMLTxtRange_scrollIntoView(IHTMLTxtRange *iface, VARIANT_BOOL fStart)
1114 {
1115     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1116     FIXME("(%p)->(%x)\n", This, fStart);
1117     return E_NOTIMPL;
1118 }
1119
1120 static HRESULT WINAPI HTMLTxtRange_collapse(IHTMLTxtRange *iface, VARIANT_BOOL Start)
1121 {
1122     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1123
1124     TRACE("(%p)->(%x)\n", This, Start);
1125
1126     nsIDOMRange_Collapse(This->nsrange, Start != VARIANT_FALSE);
1127     return S_OK;
1128 }
1129
1130 static HRESULT WINAPI HTMLTxtRange_expand(IHTMLTxtRange *iface, BSTR Unit, VARIANT_BOOL *Success)
1131 {
1132     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1133     range_unit_t unit;
1134
1135     TRACE("(%p)->(%s %p)\n", This, debugstr_w(Unit), Success);
1136
1137     unit = string_to_unit(Unit);
1138     if(unit == RU_UNKNOWN)
1139         return E_INVALIDARG;
1140
1141     *Success = VARIANT_FALSE;
1142
1143     switch(unit) {
1144     case RU_WORD: {
1145         rangepoint_t end, start;
1146         cpp_bool is_collapsed;
1147
1148         get_start_point(This, &start);
1149         get_end_point(This, &end);
1150
1151         nsIDOMRange_GetCollapsed(This->nsrange, &is_collapsed);
1152
1153         if(find_word_end(&end, is_collapsed)) {
1154             set_end_point(This, &end);
1155             *Success = VARIANT_TRUE;
1156         }
1157
1158         if(find_prev_space(&start, TRUE)) {
1159             set_start_point(This, &start);
1160             *Success = VARIANT_TRUE;
1161         }
1162
1163         free_rangepoint(&end);
1164         free_rangepoint(&start);
1165         break;
1166     }
1167
1168     case RU_TEXTEDIT: {
1169         nsIDOMHTMLElement *nsbody = NULL;
1170         nsresult nsres;
1171
1172         nsres = nsIDOMHTMLDocument_GetBody(This->doc->nsdoc, &nsbody);
1173         if(NS_FAILED(nsres) || !nsbody) {
1174             ERR("Could not get body: %08x\n", nsres);
1175             break;
1176         }
1177
1178         nsres = nsIDOMRange_SelectNodeContents(This->nsrange, (nsIDOMNode*)nsbody);
1179         nsIDOMHTMLElement_Release(nsbody);
1180         if(NS_FAILED(nsres)) {
1181             ERR("Collapse failed: %08x\n", nsres);
1182             break;
1183         }
1184
1185         *Success = VARIANT_TRUE;
1186         break;
1187     }
1188
1189     default:
1190         FIXME("Unimplemented unit %s\n", debugstr_w(Unit));
1191     }
1192
1193     return S_OK;
1194 }
1195
1196 static HRESULT WINAPI HTMLTxtRange_move(IHTMLTxtRange *iface, BSTR Unit,
1197         LONG Count, LONG *ActualCount)
1198 {
1199     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1200     range_unit_t unit;
1201
1202     TRACE("(%p)->(%s %d %p)\n", This, debugstr_w(Unit), Count, ActualCount);
1203
1204     unit = string_to_unit(Unit);
1205     if(unit == RU_UNKNOWN)
1206         return E_INVALIDARG;
1207
1208     if(!Count) {
1209         *ActualCount = 0;
1210         return IHTMLTxtRange_collapse(&This->IHTMLTxtRange_iface, TRUE);
1211     }
1212
1213     switch(unit) {
1214     case RU_CHAR: {
1215         rangepoint_t start;
1216
1217         get_start_point(This, &start);
1218
1219         *ActualCount = move_by_chars(&start, Count);
1220
1221         set_start_point(This, &start);
1222         IHTMLTxtRange_collapse(&This->IHTMLTxtRange_iface, TRUE);
1223         free_rangepoint(&start);
1224         break;
1225     }
1226
1227     case RU_WORD: {
1228         rangepoint_t start;
1229
1230         get_start_point(This, &start);
1231
1232         *ActualCount = move_by_words(&start, Count);
1233
1234         set_start_point(This, &start);
1235         IHTMLTxtRange_collapse(&This->IHTMLTxtRange_iface, TRUE);
1236         free_rangepoint(&start);
1237         break;
1238     }
1239
1240     default:
1241         FIXME("unimplemented unit %s\n", debugstr_w(Unit));
1242     }
1243
1244     TRACE("ret %d\n", *ActualCount);
1245     return S_OK;
1246 }
1247
1248 static HRESULT WINAPI HTMLTxtRange_moveStart(IHTMLTxtRange *iface, BSTR Unit,
1249         LONG Count, LONG *ActualCount)
1250 {
1251     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1252     range_unit_t unit;
1253
1254     TRACE("(%p)->(%s %d %p)\n", This, debugstr_w(Unit), Count, ActualCount);
1255
1256     unit = string_to_unit(Unit);
1257     if(unit == RU_UNKNOWN)
1258         return E_INVALIDARG;
1259
1260     if(!Count) {
1261         *ActualCount = 0;
1262         return S_OK;
1263     }
1264
1265     switch(unit) {
1266     case RU_CHAR: {
1267         rangepoint_t start;
1268
1269         get_start_point(This, &start);
1270
1271         *ActualCount = move_by_chars(&start, Count);
1272
1273         set_start_point(This, &start);
1274         free_rangepoint(&start);
1275         break;
1276     }
1277
1278     default:
1279         FIXME("unimplemented unit %s\n", debugstr_w(Unit));
1280         return E_NOTIMPL;
1281     }
1282
1283     return S_OK;
1284 }
1285
1286 static HRESULT WINAPI HTMLTxtRange_moveEnd(IHTMLTxtRange *iface, BSTR Unit,
1287         LONG Count, LONG *ActualCount)
1288 {
1289     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1290     range_unit_t unit;
1291
1292     TRACE("(%p)->(%s %d %p)\n", This, debugstr_w(Unit), Count, ActualCount);
1293
1294     unit = string_to_unit(Unit);
1295     if(unit == RU_UNKNOWN)
1296         return E_INVALIDARG;
1297
1298     if(!Count) {
1299         *ActualCount = 0;
1300         return S_OK;
1301     }
1302
1303     switch(unit) {
1304     case RU_CHAR: {
1305         rangepoint_t end;
1306
1307         get_end_point(This, &end);
1308
1309         *ActualCount = move_by_chars(&end, Count);
1310
1311         set_end_point(This, &end);
1312         free_rangepoint(&end);
1313         break;
1314     }
1315
1316     default:
1317         FIXME("unimplemented unit %s\n", debugstr_w(Unit));
1318     }
1319
1320     return S_OK;
1321 }
1322
1323 static HRESULT WINAPI HTMLTxtRange_select(IHTMLTxtRange *iface)
1324 {
1325     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1326     nsISelection *nsselection;
1327     nsresult nsres;
1328
1329     TRACE("(%p)\n", This);
1330
1331     nsres = nsIDOMWindow_GetSelection(This->doc->basedoc.window->nswindow, &nsselection);
1332     if(NS_FAILED(nsres)) {
1333         ERR("GetSelection failed: %08x\n", nsres);
1334         return E_FAIL;
1335     }
1336
1337     nsISelection_RemoveAllRanges(nsselection);
1338     nsISelection_AddRange(nsselection, This->nsrange);
1339     nsISelection_Release(nsselection);
1340     return S_OK;
1341 }
1342
1343 static HRESULT WINAPI HTMLTxtRange_pasteHTML(IHTMLTxtRange *iface, BSTR html)
1344 {
1345     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1346     nsIDOMDocumentFragment *doc_frag;
1347     nsAString nsstr;
1348     nsresult nsres;
1349
1350     TRACE("(%p)->(%s)\n", This, debugstr_w(html));
1351
1352     nsres = nsIDOMRange_Collapse(This->nsrange, TRUE);
1353     assert(nsres == NS_OK);
1354
1355     nsAString_InitDepend(&nsstr, html);
1356     nsres = nsIDOMRange_CreateContextualFragment(This->nsrange, &nsstr, &doc_frag);
1357     nsAString_Finish(&nsstr);
1358     if(NS_FAILED(nsres)) {
1359         ERR("CreateContextualFragment failed: %08x\n", nsres);
1360         return E_FAIL;
1361     }
1362
1363     nsres = nsIDOMRange_InsertNode(This->nsrange, (nsIDOMNode*)doc_frag);
1364     nsIDOMDocumentFragment_Release(doc_frag);
1365     if(NS_FAILED(nsres)) {
1366         ERR("InsertNode failed: %08x\n", nsres);
1367         return E_FAIL;
1368     }
1369
1370     nsres = nsIDOMRange_Collapse(This->nsrange, FALSE);
1371     assert(nsres == NS_OK);
1372     return S_OK;
1373 }
1374
1375 static HRESULT WINAPI HTMLTxtRange_moveToElementText(IHTMLTxtRange *iface, IHTMLElement *element)
1376 {
1377     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1378     HTMLElement *elem;
1379     nsresult nsres;
1380
1381     TRACE("(%p)->(%p)\n", This, element);
1382
1383     elem = unsafe_impl_from_IHTMLElement(element);
1384     if(!elem)
1385         return E_INVALIDARG;
1386
1387     nsres = nsIDOMRange_SelectNodeContents(This->nsrange, elem->node.nsnode);
1388     if(NS_FAILED(nsres)) {
1389         ERR("SelectNodeContents failed: %08x\n", nsres);
1390         return E_FAIL;
1391     }
1392
1393     return S_OK;
1394 }
1395
1396 static HRESULT WINAPI HTMLTxtRange_setEndPoint(IHTMLTxtRange *iface, BSTR how,
1397         IHTMLTxtRange *SourceRange)
1398 {
1399     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1400     HTMLTxtRange *src_range;
1401     nsIDOMNode *ref_node;
1402     INT32 ref_offset;
1403     BOOL set_start;
1404     int how_type;
1405     INT16 cmp;
1406     nsresult nsres;
1407
1408     TRACE("(%p)->(%s %p)\n", This, debugstr_w(how), SourceRange);
1409
1410     how_type = string_to_nscmptype(how);
1411     if(how_type == -1)
1412         return E_INVALIDARG;
1413
1414     src_range = get_range_object(This->doc, SourceRange);
1415     if(!src_range)
1416         return E_FAIL;
1417
1418     switch(how_type) {
1419     case NS_START_TO_START:
1420     case NS_END_TO_START:
1421         nsres = nsIDOMRange_GetStartContainer(src_range->nsrange, &ref_node);
1422         assert(nsres == NS_OK);
1423
1424         nsres = nsIDOMRange_GetStartOffset(src_range->nsrange, &ref_offset);
1425         assert(nsres == NS_OK);
1426
1427         set_start = how_type == NS_START_TO_START;
1428         break;
1429     case NS_END_TO_END:
1430     case NS_START_TO_END:
1431         nsres = nsIDOMRange_GetEndContainer(src_range->nsrange, &ref_node);
1432         assert(nsres == NS_OK);
1433
1434         nsres = nsIDOMRange_GetEndOffset(src_range->nsrange, &ref_offset);
1435         assert(nsres == NS_OK);
1436
1437         set_start = how_type == NS_START_TO_END;
1438         break;
1439     DEFAULT_UNREACHABLE;
1440     }
1441
1442     nsres = nsIDOMRange_ComparePoint(This->nsrange, ref_node, ref_offset, &cmp);
1443     assert(nsres == NS_OK);
1444
1445     if(set_start) {
1446         if(cmp <= 0) {
1447             nsres = nsIDOMRange_SetStart(This->nsrange, ref_node, ref_offset);
1448         }else {
1449             nsres = nsIDOMRange_Collapse(This->nsrange, FALSE);
1450             assert(nsres == NS_OK);
1451
1452             nsres = nsIDOMRange_SetEnd(This->nsrange, ref_node, ref_offset);
1453         }
1454     }else {
1455         if(cmp >= 0) {
1456             nsres = nsIDOMRange_SetEnd(This->nsrange, ref_node, ref_offset);
1457         }else {
1458             nsres = nsIDOMRange_Collapse(This->nsrange, TRUE);
1459             assert(nsres == NS_OK);
1460
1461             nsres = nsIDOMRange_SetStart(This->nsrange, ref_node, ref_offset);
1462         }
1463     }
1464     assert(nsres == NS_OK);
1465
1466     nsIDOMNode_Release(ref_node);
1467     return S_OK;
1468 }
1469
1470 static HRESULT WINAPI HTMLTxtRange_compareEndPoints(IHTMLTxtRange *iface, BSTR how,
1471         IHTMLTxtRange *SourceRange, LONG *ret)
1472 {
1473     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1474     HTMLTxtRange *src_range;
1475     short nsret = 0;
1476     int nscmpt;
1477     nsresult nsres;
1478
1479     TRACE("(%p)->(%s %p %p)\n", This, debugstr_w(how), SourceRange, ret);
1480
1481     nscmpt = string_to_nscmptype(how);
1482     if(nscmpt == -1)
1483         return E_INVALIDARG;
1484
1485     src_range = get_range_object(This->doc, SourceRange);
1486     if(!src_range)
1487         return E_FAIL;
1488
1489     nsres = nsIDOMRange_CompareBoundaryPoints(This->nsrange, nscmpt, src_range->nsrange, &nsret);
1490     if(NS_FAILED(nsres))
1491         ERR("CompareBoundaryPoints failed: %08x\n", nsres);
1492
1493     *ret = nsret;
1494     return S_OK;
1495 }
1496
1497 static HRESULT WINAPI HTMLTxtRange_findText(IHTMLTxtRange *iface, BSTR String,
1498         LONG count, LONG Flags, VARIANT_BOOL *Success)
1499 {
1500     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1501     FIXME("(%p)->(%s %d %08x %p)\n", This, debugstr_w(String), count, Flags, Success);
1502     return E_NOTIMPL;
1503 }
1504
1505 static HRESULT WINAPI HTMLTxtRange_moveToPoint(IHTMLTxtRange *iface, LONG x, LONG y)
1506 {
1507     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1508     FIXME("(%p)->(%d %d)\n", This, x, y);
1509     return E_NOTIMPL;
1510 }
1511
1512 static HRESULT WINAPI HTMLTxtRange_getBookmark(IHTMLTxtRange *iface, BSTR *Bookmark)
1513 {
1514     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1515     FIXME("(%p)->(%p)\n", This, Bookmark);
1516     return E_NOTIMPL;
1517 }
1518
1519 static HRESULT WINAPI HTMLTxtRange_moveToBookmark(IHTMLTxtRange *iface, BSTR Bookmark,
1520         VARIANT_BOOL *Success)
1521 {
1522     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1523     FIXME("(%p)->(%s %p)\n", This, debugstr_w(Bookmark), Success);
1524     return E_NOTIMPL;
1525 }
1526
1527 static HRESULT WINAPI HTMLTxtRange_queryCommandSupported(IHTMLTxtRange *iface, BSTR cmdID,
1528         VARIANT_BOOL *pfRet)
1529 {
1530     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1531     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pfRet);
1532     return E_NOTIMPL;
1533 }
1534
1535 static HRESULT WINAPI HTMLTxtRange_queryCommandEnabled(IHTMLTxtRange *iface, BSTR cmdID,
1536         VARIANT_BOOL *pfRet)
1537 {
1538     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1539     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pfRet);
1540     return E_NOTIMPL;
1541 }
1542
1543 static HRESULT WINAPI HTMLTxtRange_queryCommandState(IHTMLTxtRange *iface, BSTR cmdID,
1544         VARIANT_BOOL *pfRet)
1545 {
1546     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1547     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pfRet);
1548     return E_NOTIMPL;
1549 }
1550
1551 static HRESULT WINAPI HTMLTxtRange_queryCommandIndeterm(IHTMLTxtRange *iface, BSTR cmdID,
1552         VARIANT_BOOL *pfRet)
1553 {
1554     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1555     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pfRet);
1556     return E_NOTIMPL;
1557 }
1558
1559 static HRESULT WINAPI HTMLTxtRange_queryCommandText(IHTMLTxtRange *iface, BSTR cmdID,
1560         BSTR *pcmdText)
1561 {
1562     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1563     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pcmdText);
1564     return E_NOTIMPL;
1565 }
1566
1567 static HRESULT WINAPI HTMLTxtRange_queryCommandValue(IHTMLTxtRange *iface, BSTR cmdID,
1568         VARIANT *pcmdValue)
1569 {
1570     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1571     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pcmdValue);
1572     return E_NOTIMPL;
1573 }
1574
1575 static HRESULT WINAPI HTMLTxtRange_execCommand(IHTMLTxtRange *iface, BSTR cmdID,
1576         VARIANT_BOOL showUI, VARIANT value, VARIANT_BOOL *pfRet)
1577 {
1578     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1579     FIXME("(%p)->(%s %x v %p)\n", This, debugstr_w(cmdID), showUI, pfRet);
1580     return E_NOTIMPL;
1581 }
1582
1583 static HRESULT WINAPI HTMLTxtRange_execCommandShowHelp(IHTMLTxtRange *iface, BSTR cmdID,
1584         VARIANT_BOOL *pfRet)
1585 {
1586     HTMLTxtRange *This = impl_from_IHTMLTxtRange(iface);
1587     FIXME("(%p)->(%s %p)\n", This, debugstr_w(cmdID), pfRet);
1588     return E_NOTIMPL;
1589 }
1590
1591 static const IHTMLTxtRangeVtbl HTMLTxtRangeVtbl = {
1592     HTMLTxtRange_QueryInterface,
1593     HTMLTxtRange_AddRef,
1594     HTMLTxtRange_Release,
1595     HTMLTxtRange_GetTypeInfoCount,
1596     HTMLTxtRange_GetTypeInfo,
1597     HTMLTxtRange_GetIDsOfNames,
1598     HTMLTxtRange_Invoke,
1599     HTMLTxtRange_get_htmlText,
1600     HTMLTxtRange_put_text,
1601     HTMLTxtRange_get_text,
1602     HTMLTxtRange_parentElement,
1603     HTMLTxtRange_duplicate,
1604     HTMLTxtRange_inRange,
1605     HTMLTxtRange_isEqual,
1606     HTMLTxtRange_scrollIntoView,
1607     HTMLTxtRange_collapse,
1608     HTMLTxtRange_expand,
1609     HTMLTxtRange_move,
1610     HTMLTxtRange_moveStart,
1611     HTMLTxtRange_moveEnd,
1612     HTMLTxtRange_select,
1613     HTMLTxtRange_pasteHTML,
1614     HTMLTxtRange_moveToElementText,
1615     HTMLTxtRange_setEndPoint,
1616     HTMLTxtRange_compareEndPoints,
1617     HTMLTxtRange_findText,
1618     HTMLTxtRange_moveToPoint,
1619     HTMLTxtRange_getBookmark,
1620     HTMLTxtRange_moveToBookmark,
1621     HTMLTxtRange_queryCommandSupported,
1622     HTMLTxtRange_queryCommandEnabled,
1623     HTMLTxtRange_queryCommandState,
1624     HTMLTxtRange_queryCommandIndeterm,
1625     HTMLTxtRange_queryCommandText,
1626     HTMLTxtRange_queryCommandValue,
1627     HTMLTxtRange_execCommand,
1628     HTMLTxtRange_execCommandShowHelp
1629 };
1630
1631 static inline HTMLTxtRange *impl_from_IOleCommandTarget(IOleCommandTarget *iface)
1632 {
1633     return CONTAINING_RECORD(iface, HTMLTxtRange, IOleCommandTarget_iface);
1634 }
1635
1636 static HRESULT WINAPI RangeCommandTarget_QueryInterface(IOleCommandTarget *iface, REFIID riid, void **ppv)
1637 {
1638     HTMLTxtRange *This = impl_from_IOleCommandTarget(iface);
1639     return IHTMLTxtRange_QueryInterface(&This->IHTMLTxtRange_iface, riid, ppv);
1640 }
1641
1642 static ULONG WINAPI RangeCommandTarget_AddRef(IOleCommandTarget *iface)
1643 {
1644     HTMLTxtRange *This = impl_from_IOleCommandTarget(iface);
1645     return IHTMLTxtRange_AddRef(&This->IHTMLTxtRange_iface);
1646 }
1647
1648 static ULONG WINAPI RangeCommandTarget_Release(IOleCommandTarget *iface)
1649 {
1650     HTMLTxtRange *This = impl_from_IOleCommandTarget(iface);
1651     return IHTMLTxtRange_Release(&This->IHTMLTxtRange_iface);
1652 }
1653
1654 static HRESULT WINAPI RangeCommandTarget_QueryStatus(IOleCommandTarget *iface, const GUID *pguidCmdGroup,
1655         ULONG cCmds, OLECMD prgCmds[], OLECMDTEXT *pCmdText)
1656 {
1657     HTMLTxtRange *This = impl_from_IOleCommandTarget(iface);
1658     FIXME("(%p)->(%s %d %p %p)\n", This, debugstr_guid(pguidCmdGroup), cCmds, prgCmds, pCmdText);
1659     return E_NOTIMPL;
1660 }
1661
1662 static HRESULT exec_indent(HTMLTxtRange *This, VARIANT *in, VARIANT *out)
1663 {
1664     nsIDOMHTMLElement *blockquote_elem, *p_elem;
1665     nsIDOMDocumentFragment *fragment;
1666     nsIDOMNode *tmp;
1667
1668     static const PRUnichar blockquoteW[] = {'B','L','O','C','K','Q','U','O','T','E',0};
1669     static const PRUnichar pW[] = {'P',0};
1670
1671     TRACE("(%p)->(%p %p)\n", This, in, out);
1672
1673     if(!This->doc->nsdoc) {
1674         WARN("NULL nsdoc\n");
1675         return E_NOTIMPL;
1676     }
1677
1678     create_nselem(This->doc, blockquoteW, &blockquote_elem);
1679     create_nselem(This->doc, pW, &p_elem);
1680
1681     nsIDOMRange_ExtractContents(This->nsrange, &fragment);
1682     nsIDOMHTMLElement_AppendChild(p_elem, (nsIDOMNode*)fragment, &tmp);
1683     nsIDOMDocumentFragment_Release(fragment);
1684     nsIDOMNode_Release(tmp);
1685
1686     nsIDOMHTMLElement_AppendChild(blockquote_elem, (nsIDOMNode*)p_elem, &tmp);
1687     nsIDOMHTMLElement_Release(p_elem);
1688     nsIDOMNode_Release(tmp);
1689
1690     nsIDOMRange_InsertNode(This->nsrange, (nsIDOMNode*)blockquote_elem);
1691     nsIDOMHTMLElement_Release(blockquote_elem);
1692
1693     return S_OK;
1694 }
1695
1696 static HRESULT WINAPI RangeCommandTarget_Exec(IOleCommandTarget *iface, const GUID *pguidCmdGroup,
1697         DWORD nCmdID, DWORD nCmdexecopt, VARIANT *pvaIn, VARIANT *pvaOut)
1698 {
1699     HTMLTxtRange *This = impl_from_IOleCommandTarget(iface);
1700
1701     TRACE("(%p)->(%s %d %x %p %p)\n", This, debugstr_guid(pguidCmdGroup), nCmdID,
1702           nCmdexecopt, pvaIn, pvaOut);
1703
1704     if(pguidCmdGroup && IsEqualGUID(&CGID_MSHTML, pguidCmdGroup)) {
1705         switch(nCmdID) {
1706         case IDM_INDENT:
1707             return exec_indent(This, pvaIn, pvaOut);
1708         default:
1709             FIXME("Unsupported cmdid %d of CGID_MSHTML\n", nCmdID);
1710         }
1711     }else {
1712         FIXME("Unsupported cmd %d of group %s\n", nCmdID, debugstr_guid(pguidCmdGroup));
1713     }
1714
1715     return E_NOTIMPL;
1716 }
1717
1718 static const IOleCommandTargetVtbl OleCommandTargetVtbl = {
1719     RangeCommandTarget_QueryInterface,
1720     RangeCommandTarget_AddRef,
1721     RangeCommandTarget_Release,
1722     RangeCommandTarget_QueryStatus,
1723     RangeCommandTarget_Exec
1724 };
1725
1726 static const tid_t HTMLTxtRange_iface_tids[] = {
1727     IHTMLTxtRange_tid,
1728     0
1729 };
1730 static dispex_static_data_t HTMLTxtRange_dispex = {
1731     NULL,
1732     IHTMLTxtRange_tid,
1733     NULL,
1734     HTMLTxtRange_iface_tids
1735 };
1736
1737 HRESULT HTMLTxtRange_Create(HTMLDocumentNode *doc, nsIDOMRange *nsrange, IHTMLTxtRange **p)
1738 {
1739     HTMLTxtRange *ret;
1740
1741     ret = heap_alloc(sizeof(HTMLTxtRange));
1742     if(!ret)
1743         return E_OUTOFMEMORY;
1744
1745     init_dispex(&ret->dispex, (IUnknown*)&ret->IHTMLTxtRange_iface, &HTMLTxtRange_dispex);
1746
1747     ret->IHTMLTxtRange_iface.lpVtbl = &HTMLTxtRangeVtbl;
1748     ret->IOleCommandTarget_iface.lpVtbl = &OleCommandTargetVtbl;
1749     ret->ref = 1;
1750
1751     if(nsrange)
1752         nsIDOMRange_AddRef(nsrange);
1753     ret->nsrange = nsrange;
1754
1755     ret->doc = doc;
1756     list_add_head(&doc->range_list, &ret->entry);
1757
1758     *p = &ret->IHTMLTxtRange_iface;
1759     return S_OK;
1760 }
1761
1762 void detach_ranges(HTMLDocumentNode *This)
1763 {
1764     HTMLTxtRange *iter;
1765
1766     LIST_FOR_EACH_ENTRY(iter, &This->range_list, HTMLTxtRange, entry) {
1767         iter->doc = NULL;
1768     }
1769 }