2 * RichEdit - Basic operations on double linked lists.
4 * Copyright 2004 by Krzysztof Foltman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 WINE_DEFAULT_DEBUG_CHANNEL(richedit_lists);
26 void ME_InsertBefore(ME_DisplayItem *diWhere, ME_DisplayItem *diWhat)
28 diWhat->next = diWhere;
29 diWhat->prev = diWhere->prev;
31 diWhere->prev->next = diWhat;
32 diWhat->next->prev = diWhat;
35 void ME_Remove(ME_DisplayItem *diWhere)
37 ME_DisplayItem *diNext = diWhere->next;
38 ME_DisplayItem *diPrev = diWhere->prev;
41 diPrev->next = diNext;
42 diNext->prev = diPrev;
45 static BOOL ME_DITypesEqual(ME_DIType type, ME_DIType nTypeOrClass)
49 case diRunOrParagraph:
50 return type == diRun || type == diParagraph;
52 return type == diRun || type == diStartRow;
53 case diParagraphOrEnd:
54 return type == diTextEnd || type == diParagraph;
55 case diStartRowOrParagraph:
56 return type == diStartRow || type == diParagraph;
57 case diStartRowOrParagraphOrEnd:
58 return type == diStartRow || type == diParagraph || type == diTextEnd;
59 case diRunOrParagraphOrEnd:
60 return type == diRun || type == diParagraph || type == diTextEnd;
62 return type == nTypeOrClass;
66 /* Modifies run pointer to point to the next run, and modify the
67 * paragraph pointer if moving into the next paragraph.
69 * Returns TRUE if next run is found, otherwise returns FALSE. */
70 BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run)
72 ME_DisplayItem *p = (*run)->next;
73 while (p->type != diTextEnd)
75 if (p->type == diParagraph) {
77 } else if (p->type == diRun) {
86 /* Modifies run pointer to point to the previous run, and modify the
87 * paragraph pointer if moving into the previous paragraph.
89 * Returns TRUE if previous run is found, otherwise returns FALSE. */
90 BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run)
92 ME_DisplayItem *p = (*run)->prev;
93 while (p->type != diTextStart)
95 if (p->type == diParagraph) {
96 if (p->member.para.prev_para->type == diParagraph)
97 *para = p->member.para.prev_para;
98 } else if (p->type == diRun) {
107 ME_DisplayItem *ME_FindItemBack(ME_DisplayItem *di, ME_DIType nTypeOrClass)
113 if (ME_DITypesEqual(di->type, nTypeOrClass))
120 ME_DisplayItem *ME_FindItemBackOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass)
123 if (ME_DITypesEqual(di->type, nTypeOrClass))
130 ME_DisplayItem *ME_FindItemFwd(ME_DisplayItem *di, ME_DIType nTypeOrClass)
132 if (!di) return NULL;
135 if (ME_DITypesEqual(di->type, nTypeOrClass))
142 void ME_DestroyDisplayItem(ME_DisplayItem *item) {
143 /* TRACE("type=%s\n", ME_GetDITypeName(item->type)); */
144 if (item->type==diParagraph || item->type == diUndoSetParagraphFormat) {
145 FREE_OBJ(item->member.para.pFmt);
147 if (item->type==diRun || item->type == diUndoInsertRun) {
148 if (item->member.run.ole_obj) ME_DeleteReObject(item->member.run.ole_obj);
149 ME_ReleaseStyle(item->member.run.style);
150 ME_DestroyString(item->member.run.strText);
152 if (item->type==diUndoSetCharFormat) {
153 ME_ReleaseStyle(item->member.ustyle);
155 if (item->type==diUndoSplitParagraph) {
156 FREE_OBJ(item->member.para.pFmt);
157 FREE_OBJ(item->member.para.pCell);
162 ME_DisplayItem *ME_MakeDI(ME_DIType type) {
163 ME_DisplayItem *item = ALLOC_OBJ(ME_DisplayItem);
164 ZeroMemory(item, sizeof(ME_DisplayItem));
166 item->prev = item->next = NULL;
167 if (type == diParagraph || type == diUndoSplitParagraph) {
168 item->member.para.pFmt = ALLOC_OBJ(PARAFORMAT2);
169 ME_SetDefaultParaFormat(item->member.para.pFmt);
170 item->member.para.nFlags = MEPF_REWRAP;
176 const char *ME_GetDITypeName(ME_DIType type)
180 case diParagraph: return "diParagraph";
181 case diRun: return "diRun";
182 case diCell: return "diCell";
183 case diTextStart: return "diTextStart";
184 case diTextEnd: return "diTextEnd";
185 case diStartRow: return "diStartRow";
186 case diUndoEndTransaction: return "diUndoEndTransaction";
187 case diUndoPotentialEndTransaction: return "diUndoPotentialEndTransaction";
188 case diUndoSetParagraphFormat: return "diUndoSetParagraphFormat";
189 case diUndoSetCharFormat: return "diUndoSetCharFormat";
190 case diUndoInsertRun: return "diUndoInsertRun";
191 case diUndoDeleteRun: return "diUndoDeleteRun";
192 case diUndoJoinParagraphs: return "diJoinParagraphs";
193 case diUndoSplitParagraph: return "diSplitParagraph";
198 void ME_DumpDocument(ME_TextBuffer *buffer)
200 /* FIXME this is useless, */
201 ME_DisplayItem *pItem = buffer->pFirst;
202 TRACE("DOCUMENT DUMP START\n");
210 TRACE("Cell(level=%d%s)\n", pItem->member.cell.nNestingLevel,
211 !pItem->member.cell.next_cell ? ", END" :
212 (!pItem->member.cell.prev_cell ? ", START" :""));
215 TRACE("Paragraph(ofs=%d)\n", pItem->member.para.nCharOfs);
216 if (pItem->member.para.nFlags & MEPF_ROWSTART)
217 TRACE(" - (Table Row Start)\n");
218 if (pItem->member.para.nFlags & MEPF_ROWEND)
219 TRACE(" - (Table Row End)\n");
222 TRACE(" - StartRow\n");
225 TRACE(" - Run(\"%s\", %d, flags=%x)\n", debugstr_w(pItem->member.run.strText->szData),
226 pItem->member.run.nCharOfs, pItem->member.run.nFlags);
229 TRACE("End(ofs=%d)\n", pItem->member.para.nCharOfs);
236 TRACE("DOCUMENT DUMP END\n");