static void ME_PlayUndoItem(ME_TextEditor *editor, ME_DisplayItem *pItem) { ME_UndoItem *pUItem = (ME_UndoItem *)pItem; if (editor->nUndoMode == umIgnore) return; TRACE("Playing undo/redo item, id=%s\n", ME_GetDITypeName(pItem->type)); switch(pItem->type) { case diUndoPotentialEndTransaction: case diUndoEndTransaction: assert(0); case diUndoSetParagraphFormat: { ME_Cursor tmp; ME_DisplayItem *para; ME_CursorFromCharOfs(editor, pItem->member.para.nCharOfs, &tmp); para = ME_FindItemBack(tmp.pRun, diParagraph); ME_AddUndoItem(editor, diUndoSetParagraphFormat, para); *para->member.para.pFmt = *pItem->member.para.pFmt; para->member.para.border = pItem->member.para.border; break; } case diUndoSetCharFormat: { ME_SetCharFormat(editor, pUItem->nStart, pUItem->nLen, &pItem->member.ustyle->fmt); break; } case diUndoInsertRun: { ME_InsertRun(editor, pItem->member.run.nCharOfs, pItem); break; } case diUndoDeleteRun: { ME_InternalDeleteText(editor, pUItem->nStart, pUItem->nLen, TRUE); break; } case diUndoJoinParagraphs: { ME_Cursor tmp; ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp); /* the only thing that's needed is paragraph offset, so no need to split runs */ ME_JoinParagraphs(editor, ME_GetParagraph(tmp.pRun), TRUE); break; } case diUndoSplitParagraph: { ME_Cursor tmp; ME_DisplayItem *this_para, *new_para; BOOL bFixRowStart; int paraFlags = pItem->member.para.nFlags & (MEPF_ROWSTART|MEPF_CELL|MEPF_ROWEND); ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp); if (tmp.nOffset) tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset); assert(pUItem->nCR >= 0); assert(pUItem->nLF >= 0); this_para = ME_GetParagraph(tmp.pRun); bFixRowStart = this_para->member.para.nFlags & MEPF_ROWSTART; if (bFixRowStart) { /* Re-insert the paragraph before the table, making sure the nFlag value * is correct. */ this_para->member.para.nFlags &= ~MEPF_ROWSTART; } new_para = ME_SplitParagraph(editor, tmp.pRun, tmp.pRun->member.run.style, pUItem->nCR, pUItem->nLF, paraFlags); if (bFixRowStart) new_para->member.para.nFlags |= MEPF_ROWSTART; assert(pItem->member.para.pFmt->cbSize == sizeof(PARAFORMAT2)); *new_para->member.para.pFmt = *pItem->member.para.pFmt; new_para->member.para.border = pItem->member.para.border; if (pItem->member.para.pCell) { ME_DisplayItem *pItemCell, *pCell; pItemCell = pItem->member.para.pCell; pCell = new_para->member.para.pCell; pCell->member.cell.nRightBoundary = pItemCell->member.cell.nRightBoundary; pCell->member.cell.border = pItemCell->member.cell.border; } break; } default: assert(0 == "PlayUndoItem, unexpected type"); } }
BOOL ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars, BOOL bForce) { ME_Cursor c; int shift = 0; int totalChars = nChars; ME_DisplayItem *start_para; { /* Prevent deletion past last end of paragraph run. */ ME_DisplayItem *pTextEnd = editor->pBuffer->pLast; int nMaxChars = pTextEnd->member.para.prev_para->member.para.nCharOfs; nMaxChars += ME_FindItemBack(pTextEnd, diRun)->member.run.nCharOfs; nMaxChars -= nOfs; nChars = min(nChars, nMaxChars); } ME_CursorFromCharOfs(editor, nOfs, &c); start_para = ME_GetParagraph(c.pRun); if (!bForce) { ME_ProtectPartialTableDeletion(editor, nOfs, &nChars); if (nChars == 0) return FALSE; } while(nChars > 0) { ME_Run *run; ME_CursorFromCharOfs(editor, nOfs+nChars, &c); if (!c.nOffset && nOfs+nChars == (c.pRun->member.run.nCharOfs + ME_GetParagraph(c.pRun)->member.para.nCharOfs)) { /* We aren't deleting anything in this run, so we will go back to the * last run we are deleting text in. */ c.pRun = ME_FindItemBack(c.pRun, diRun); if (c.pRun->member.run.nFlags & MERF_ENDPARA) c.nOffset = c.pRun->member.run.nCR + c.pRun->member.run.nLF; else c.nOffset = c.pRun->member.run.strText->nLen; } run = &c.pRun->member.run; if (run->nFlags & MERF_ENDPARA) { int eollen = run->nCR + run->nLF; BOOL keepFirstParaFormat; if (!ME_FindItemFwd(c.pRun, diParagraph)) { return TRUE; } keepFirstParaFormat = (totalChars == nChars && nChars <= eollen && run->nCharOfs); if (!editor->bEmulateVersion10) /* v4.1 */ { ME_DisplayItem *next_para = ME_FindItemFwd(c.pRun, diParagraphOrEnd); ME_DisplayItem *this_para = next_para->member.para.prev_para; /* The end of paragraph before a table row is only deleted if there * is nothing else on the line before it. */ if (this_para == start_para && next_para->member.para.nFlags & MEPF_ROWSTART) { /* If the paragraph will be empty, then it should be deleted, however * it still might have text right now which would inherit the * MEPF_STARTROW property if we joined it right now. * Instead we will delete it after the preceding text is deleted. */ if (nOfs > this_para->member.para.nCharOfs) { /* Skip this end of line. */ nChars -= (eollen < nChars) ? eollen : nChars; continue; } keepFirstParaFormat = TRUE; } } ME_JoinParagraphs(editor, ME_GetParagraph(c.pRun), keepFirstParaFormat); /* ME_SkipAndPropagateCharOffset(p->pRun, shift); */ ME_CheckCharOffsets(editor); nChars -= (eollen < nChars) ? eollen : nChars; continue; } else { ME_Cursor cursor; int nCharsToDelete = min(nChars, c.nOffset); int i; c.nOffset -= nCharsToDelete; ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP; cursor = c; /* nChars is the number of characters that should be deleted from the PRECEDING runs (these BEFORE cursor.pRun) nCharsToDelete is a number of chars to delete from THIS run */ nChars -= nCharsToDelete; shift -= nCharsToDelete; TRACE("Deleting %d (remaning %d) chars at %d in '%s' (%d)\n", nCharsToDelete, nChars, c.nOffset, debugstr_w(run->strText->szData), run->strText->nLen); if (!c.nOffset && ME_StrVLen(run->strText) == nCharsToDelete) { /* undo = reinsert whole run */ /* nOfs is a character offset (from the start of the document to the current (deleted) run */ ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun); if (pUndo) pUndo->di.member.run.nCharOfs = nOfs+nChars; } else { /* undo = reinsert partial run */ ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun); if (pUndo) { ME_DestroyString(pUndo->di.member.run.strText); pUndo->di.member.run.nCharOfs = nOfs+nChars; pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete); } } TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen); TRACE("Shift value: %d\n", shift); ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete); /* update cursors (including c) */ for (i=-1; i<editor->nCursors; i++) { ME_Cursor *pThisCur = editor->pCursors + i; if (i == -1) pThisCur = &c; if (pThisCur->pRun == cursor.pRun) { if (pThisCur->nOffset > cursor.nOffset) { if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete) pThisCur->nOffset = cursor.nOffset; else pThisCur->nOffset -= nCharsToDelete; assert(pThisCur->nOffset >= 0); assert(pThisCur->nOffset <= ME_StrVLen(run->strText)); } if (pThisCur->nOffset == ME_StrVLen(run->strText)) { pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd); assert(pThisCur->pRun->type == diRun); pThisCur->nOffset = 0; } } } /* c = updated data now */ if (c.pRun == cursor.pRun) ME_SkipAndPropagateCharOffset(c.pRun, shift); else ME_PropagateCharOffset(c.pRun, shift); if (!ME_StrVLen(cursor.pRun->member.run.strText)) { TRACE("Removing useless run\n"); ME_Remove(cursor.pRun); ME_DestroyDisplayItem(cursor.pRun); } shift = 0; /* ME_CheckCharOffsets(editor); */ continue; } } return TRUE; }
static void ME_PlayUndoItem(ME_TextEditor *editor, ME_DisplayItem *pItem) { ME_UndoItem *pUItem = (ME_UndoItem *)pItem; if (editor->nUndoMode == umIgnore) return; TRACE("Playing undo/redo item, id=%s\n", ME_GetDITypeName(pItem->type)); switch(pItem->type) { case diUndoEndTransaction: assert(0); case diUndoSetParagraphFormat: { ME_Cursor tmp; ME_CursorFromCharOfs(editor, pItem->member.para.nCharOfs, &tmp); ME_SetParaFormat(editor, ME_FindItemBack(tmp.pRun, diParagraph), pItem->member.para.pFmt); break; } case diUndoSetCharFormat: { ME_SetCharFormat(editor, pUItem->nStart, pUItem->nLen, &pItem->member.ustyle->fmt); break; } case diUndoSetDefaultCharFormat: { ME_SetDefaultCharFormat(editor, &pItem->member.ustyle->fmt); break; } case diUndoInsertRun: { ME_InsertRun(editor, pItem->member.run.nCharOfs, pItem); break; } case diUndoDeleteRun: { ME_InternalDeleteText(editor, pUItem->nStart, pUItem->nLen); break; } case diUndoJoinParagraphs: { ME_Cursor tmp; ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp); /* the only thing that's needed is paragraph offset, so no need to split runs */ ME_JoinParagraphs(editor, ME_GetParagraph(tmp.pRun)); break; } case diUndoSplitParagraph: { ME_Cursor tmp; ME_DisplayItem *new_para; ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp); if (tmp.nOffset) tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset); assert(pUItem->nCR >= 0); assert(pUItem->nLF >= 0); new_para = ME_SplitParagraph(editor, tmp.pRun, tmp.pRun->member.run.style, pUItem->nCR, pUItem->nLF); assert(pItem->member.para.pFmt->cbSize == sizeof(PARAFORMAT2)); *new_para->member.para.pFmt = *pItem->member.para.pFmt; break; } default: assert(0 == "PlayUndoItem, unexpected type"); } }
BOOL ME_InternalDeleteText(ME_TextEditor *editor, ME_Cursor *start, int nChars, BOOL bForce) { ME_Cursor c = *start; int nOfs = ME_GetCursorOfs(start), text_len = ME_GetTextLength( editor ); int shift = 0; int totalChars = nChars; ME_DisplayItem *start_para; BOOL delete_all = FALSE; /* Prevent deletion past last end of paragraph run. */ nChars = min(nChars, text_len - nOfs); if (nChars == text_len) delete_all = TRUE; start_para = c.pPara; if (!bForce) { ME_ProtectPartialTableDeletion(editor, &c, &nChars); if (nChars == 0) return FALSE; } while(nChars > 0) { ME_Run *run; ME_CursorFromCharOfs(editor, nOfs+nChars, &c); if (!c.nOffset && nOfs+nChars == (c.pRun->member.run.nCharOfs + c.pPara->member.para.nCharOfs)) { /* We aren't deleting anything in this run, so we will go back to the * last run we are deleting text in. */ ME_PrevRun(&c.pPara, &c.pRun); c.nOffset = c.pRun->member.run.len; } run = &c.pRun->member.run; if (run->nFlags & MERF_ENDPARA) { int eollen = c.pRun->member.run.len; BOOL keepFirstParaFormat; if (!ME_FindItemFwd(c.pRun, diParagraph)) { return TRUE; } keepFirstParaFormat = (totalChars == nChars && nChars <= eollen && run->nCharOfs); if (!editor->bEmulateVersion10) /* v4.1 */ { ME_DisplayItem *next_para = ME_FindItemFwd(c.pRun, diParagraphOrEnd); ME_DisplayItem *this_para = next_para->member.para.prev_para; /* The end of paragraph before a table row is only deleted if there * is nothing else on the line before it. */ if (this_para == start_para && next_para->member.para.nFlags & MEPF_ROWSTART) { /* If the paragraph will be empty, then it should be deleted, however * it still might have text right now which would inherit the * MEPF_STARTROW property if we joined it right now. * Instead we will delete it after the preceding text is deleted. */ if (nOfs > this_para->member.para.nCharOfs) { /* Skip this end of line. */ nChars -= (eollen < nChars) ? eollen : nChars; continue; } keepFirstParaFormat = TRUE; } } ME_JoinParagraphs(editor, c.pPara, keepFirstParaFormat); /* ME_SkipAndPropagateCharOffset(p->pRun, shift); */ ME_CheckCharOffsets(editor); nChars -= (eollen < nChars) ? eollen : nChars; continue; } else { ME_Cursor cursor; int nCharsToDelete = min(nChars, c.nOffset); int i; c.nOffset -= nCharsToDelete; ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP; cursor = c; /* nChars is the number of characters that should be deleted from the PRECEDING runs (these BEFORE cursor.pRun) nCharsToDelete is a number of chars to delete from THIS run */ nChars -= nCharsToDelete; shift -= nCharsToDelete; TRACE("Deleting %d (remaning %d) chars at %d in %s (%d)\n", nCharsToDelete, nChars, c.nOffset, debugstr_run( run ), run->len); /* nOfs is a character offset (from the start of the document to the current (deleted) run */ add_undo_insert_run( editor, nOfs + nChars, get_text( run, c.nOffset ), nCharsToDelete, run->nFlags, run->style ); ME_StrDeleteV(run->para->text, run->nCharOfs + c.nOffset, nCharsToDelete); run->len -= nCharsToDelete; TRACE("Post deletion string: %s (%d)\n", debugstr_run( run ), run->len); TRACE("Shift value: %d\n", shift); /* update cursors (including c) */ for (i=-1; i<editor->nCursors; i++) { ME_Cursor *pThisCur = editor->pCursors + i; if (i == -1) pThisCur = &c; if (pThisCur->pRun == cursor.pRun) { if (pThisCur->nOffset > cursor.nOffset) { if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete) pThisCur->nOffset = cursor.nOffset; else pThisCur->nOffset -= nCharsToDelete; assert(pThisCur->nOffset >= 0); assert(pThisCur->nOffset <= run->len); } if (pThisCur->nOffset == run->len) { pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd); assert(pThisCur->pRun->type == diRun); pThisCur->nOffset = 0; } } } /* c = updated data now */ if (c.pRun == cursor.pRun) ME_SkipAndPropagateCharOffset(c.pRun, shift); else ME_PropagateCharOffset(c.pRun, shift); if (!cursor.pRun->member.run.len) { TRACE("Removing empty run\n"); ME_Remove(cursor.pRun); ME_DestroyDisplayItem(cursor.pRun); } shift = 0; /* ME_CheckCharOffsets(editor); */ continue; } } if (delete_all) ME_SetDefaultParaFormat( editor, start_para->member.para.pFmt ); return TRUE; }
void ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars) { ME_Cursor c; int shift = 0; while(nChars > 0) { ME_Run *run; ME_CursorFromCharOfs(editor, nOfs, &c); run = &c.pRun->member.run; if (run->nFlags & MERF_ENDPARA) { int eollen = run->nCR + run->nLF; if (!ME_FindItemFwd(c.pRun, diParagraph)) { return; } ME_JoinParagraphs(editor, ME_GetParagraph(c.pRun)); /* ME_SkipAndPropagateCharOffset(p->pRun, shift); */ ME_CheckCharOffsets(editor); nChars -= (eollen < nChars) ? eollen : nChars; continue; } else { ME_Cursor cursor; int nIntendedChars = nChars; int nCharsToDelete = nChars; int i; int loc = c.nOffset; ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP; cursor = c; ME_StrRelPos(run->strText, loc, &nChars); /* nChars is the number of characters that should be deleted from the FOLLOWING runs (these AFTER cursor.pRun) nCharsToDelete is a number of chars to delete from THIS run */ nCharsToDelete -= nChars; shift -= nCharsToDelete; TRACE("Deleting %d (intended %d-remaning %d) chars at %d in '%s' (%d)\n", nCharsToDelete, nIntendedChars, nChars, c.nOffset, debugstr_w(run->strText->szData), run->strText->nLen); if (!c.nOffset && ME_StrVLen(run->strText) == nCharsToDelete) { /* undo = reinsert whole run */ /* nOfs is a character offset (from the start of the document to the current (deleted) run */ ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun); if (pUndo) pUndo->di.member.run.nCharOfs = nOfs; } else { /* undo = reinsert partial run */ ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun); if (pUndo) { ME_DestroyString(pUndo->di.member.run.strText); pUndo->di.member.run.nCharOfs = nOfs; pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete); } } TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen); TRACE("Shift value: %d\n", shift); ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete); /* update cursors (including c) */ for (i=-1; i<editor->nCursors; i++) { ME_Cursor *pThisCur = editor->pCursors + i; if (i == -1) pThisCur = &c; if (pThisCur->pRun == cursor.pRun) { if (pThisCur->nOffset > cursor.nOffset) { if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete) pThisCur->nOffset = cursor.nOffset; else pThisCur->nOffset -= nCharsToDelete; assert(pThisCur->nOffset >= 0); assert(pThisCur->nOffset <= ME_StrVLen(run->strText)); } if (pThisCur->nOffset == ME_StrVLen(run->strText)) { pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd); assert(pThisCur->pRun->type == diRun); pThisCur->nOffset = 0; } } } /* c = updated data now */ if (c.pRun == cursor.pRun) ME_SkipAndPropagateCharOffset(c.pRun, shift); else ME_PropagateCharOffset(c.pRun, shift); if (!ME_StrVLen(cursor.pRun->member.run.strText)) { TRACE("Removing useless run\n"); ME_Remove(cursor.pRun); ME_DestroyDisplayItem(cursor.pRun); } shift = 0; /* ME_CheckCharOffsets(editor); */ continue; } } }