dlls/riched20/list.c

   1 /*
   2  * RichEdit - Basic operations on double linked lists.
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20
  21
  22 #include "editor.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(richedit_lists);
  25
  26 void ME_InsertBefore(ME_DisplayItem *diWhere, ME_DisplayItem *diWhat)
  27 {
  28   diWhat->next = diWhere;
  29   diWhat->prev = diWhere->prev;
  30
  31   diWhere->prev->next = diWhat;
  32   diWhat->next->prev = diWhat;
  33 }
  34
  35 void ME_Remove(ME_DisplayItem *diWhere)
  36 {
  37   ME_DisplayItem *diNext = diWhere->next;
  38   ME_DisplayItem *diPrev = diWhere->prev;
  39   assert(diNext);
  40   assert(diPrev);
  41   diPrev->next = diNext;
  42   diNext->prev = diPrev;
  43 }
  44
  45 static BOOL ME_DITypesEqual(ME_DIType type, ME_DIType nTypeOrClass)
  46 {
  47   switch (nTypeOrClass)
  48   {
  49     case diRunOrParagraph:
  50       return type == diRun || type == diParagraph;
  51     case diRunOrStartRow:
  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;
  61     default:
  62       return type == nTypeOrClass;
  63   }
  64 }
  65
  66 ME_DisplayItem *ME_FindItemBack(ME_DisplayItem *di, ME_DIType nTypeOrClass)
  67 {
  68   if (!di)
  69     return NULL;
  70   di = di->prev;
  71   while(di!=NULL) {
  72     if (ME_DITypesEqual(di->type, nTypeOrClass))
  73       return di;
  74     di = di->prev;
  75   }
  76   return NULL;
  77 }
  78
  79 ME_DisplayItem *ME_FindItemBackOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass)
  80 {
  81   while(di!=NULL) {
  82     if (ME_DITypesEqual(di->type, nTypeOrClass))
  83       return di;
  84     di = di->prev;
  85   }
  86   return NULL;
  87 }
  88
  89 ME_DisplayItem *ME_FindItemFwd(ME_DisplayItem *di, ME_DIType nTypeOrClass)
  90 {
  91   if (!di) return NULL;
  92   di = di->next;
  93   while(di!=NULL) {
  94     if (ME_DITypesEqual(di->type, nTypeOrClass))
  95       return di;
  96     di = di->next;
  97   }
  98   return NULL;
  99 }
 100
 101 static const char *ME_GetDITypeName(ME_DIType type)
 102 {
 103   switch(type)
 104   {
 105     case diParagraph: return "diParagraph";
 106     case diRun: return "diRun";
 107     case diCell: return "diCell";
 108     case diTextStart: return "diTextStart";
 109     case diTextEnd: return "diTextEnd";
 110     case diStartRow: return "diStartRow";
 111     default: return "?";
 112   }
 113 }
 114
 115 void ME_DestroyDisplayItem(ME_DisplayItem *item)
 116 {
 117   if (0)
 118     TRACE("type=%s\n", ME_GetDITypeName(item->type));
 119   if (item->type==diRun)
 120   {
 121     if (item->member.run.reobj)
 122     {
 123       list_remove(&item->member.run.reobj->entry);
 124       ME_DeleteReObject(item->member.run.reobj);
 125     }
 126     heap_free( item->member.run.glyphs );
 127     heap_free( item->member.run.clusters );
 128     ME_ReleaseStyle(item->member.run.style);
 129   }
 130   heap_free(item);
 131 }
 132
 133 ME_DisplayItem *ME_MakeDI(ME_DIType type)
 134 {
 135   ME_DisplayItem *item = heap_alloc_zero(sizeof(*item));
 136
 137   item->type = type;
 138   item->prev = item->next = NULL;
 139   return item;
 140 }
 141
 142 void ME_DumpDocument(ME_TextBuffer *buffer)
 143 {
 144   /* FIXME this is useless, */
 145   ME_DisplayItem *pItem = buffer->pFirst;
 146   TRACE("DOCUMENT DUMP START\n");
 147   while(pItem) {
 148     switch(pItem->type)
 149     {
 150       case diTextStart:
 151         TRACE("Start\n");
 152         break;
 153       case diCell:
 154         TRACE("Cell(level=%d%s)\n", pItem->member.cell.nNestingLevel,
 155               !pItem->member.cell.next_cell ? ", END" :
 156                 (!pItem->member.cell.prev_cell ? ", START" :""));
 157         break;
 158       case diParagraph:
 159         TRACE("Paragraph(ofs=%d)\n", pItem->member.para.nCharOfs);
 160         if (pItem->member.para.nFlags & MEPF_ROWSTART)
 161           TRACE(" - (Table Row Start)\n");
 162         if (pItem->member.para.nFlags & MEPF_ROWEND)
 163           TRACE(" - (Table Row End)\n");
 164         break;
 165       case diStartRow:
 166         TRACE(" - StartRow\n");
 167         break;
 168       case diRun:
 169         TRACE(" - Run(%s, %d, flags=%x)\n", debugstr_run( &pItem->member.run ),
 170           pItem->member.run.nCharOfs, pItem->member.run.nFlags);
 171         break;
 172       case diTextEnd:
 173         TRACE("End(ofs=%d)\n", pItem->member.para.nCharOfs);
 174         break;
 175       default:
 176         break;
 177     }
 178     pItem = pItem->next;
 179   }
 180   TRACE("DOCUMENT DUMP END\n");
 181 }