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;
}
}
}
