BOOL TextView::ForwardDelete()
{
ULONG selstart = min(m_nSelectionStart, m_nSelectionEnd);
ULONG selend = max(m_nSelectionStart, m_nSelectionEnd);
if(selstart != selend)
{
m_pTextDoc->erase_text(selstart, selend-selstart);
m_nCursorOffset = selstart;
m_pTextDoc->m_seq.breakopt();
}
else
{
BYTE tmp[2];
//USPCACHE * uspCache;
//CSCRIPT_LOGATTR * logAttr;
//ULONG lineOffset;
//ULONG index;
m_pTextDoc->m_seq.render(m_nCursorOffset, tmp, 2);
/*GetLogAttr(m_nCurrentLine, &uspCache, &logAttr, &lineOffset);
index = m_nCursorOffset - lineOffset;
do
{
m_pTextDoc->seq.erase(m_nCursorOffset, 1);
index++;
}
while(!logAttr[index].fCharStop);*/
ULONG oldpos = m_nCursorOffset;
MoveCharNext();
m_pTextDoc->erase_text(oldpos, m_nCursorOffset - oldpos);
m_nCursorOffset = oldpos;
//if(tmp[0] == '\r')
// m_pTextDoc->erase_text(m_nCursorOffset, 2);
//else
// m_pTextDoc->erase_text(m_nCursorOffset, 1);
}
m_nSelectionStart = m_nCursorOffset;
m_nSelectionEnd = m_nCursorOffset;
ResetLineCache();
RefreshWindow();
Smeg(FALSE);
return TRUE;
}
//
// TextView::EnterText
//
// Import the specified text into the TextView at the current
// cursor position, replacing any text-selection in the process
//
ULONG TextView::EnterText(TCHAR *szText, ULONG nLength)
{
ULONG selstart = min(m_nSelectionStart, m_nSelectionEnd);
ULONG selend = max(m_nSelectionStart, m_nSelectionEnd);
BOOL fReplaceSelection = (selstart == selend) ? FALSE : TRUE;
ULONG erase_len = nLength;
switch(m_nEditMode)
{
case MODE_READONLY:
return 0;
case MODE_INSERT:
// if there is a selection then remove it
if(fReplaceSelection)
{
// group this erase with the insert/replace operation
m_pTextDoc->m_seq.group();
m_pTextDoc->erase_text(selstart, selend-selstart);
m_nCursorOffset = selstart;
}
if(!m_pTextDoc->insert_text(m_nCursorOffset, szText, nLength))
return 0;
if(fReplaceSelection)
m_pTextDoc->m_seq.ungroup();
break;
case MODE_OVERWRITE:
if(fReplaceSelection)
{
erase_len = selend - selstart;
m_nCursorOffset = selstart;
}
else
{
ULONG lineoff;
USPCACHE *uspCache = GetUspCache(0, m_nCurrentLine, &lineoff);
// single-character overwrite - must behave like 'forward delete'
// and remove a whole character-cluster (i.e. maybe more than 1 char)
if(nLength == 1)
{
ULONG oldpos = m_nCursorOffset;
MoveCharNext();
erase_len = m_nCursorOffset - oldpos;
m_nCursorOffset = oldpos;
}
// if we are at the end of a line (just before the CRLF) then we must
// not erase any text - instead we act like a regular insertion
if(m_nCursorOffset == lineoff + uspCache->length_CRLF)
erase_len = 0;
}
if(!m_pTextDoc->replace_text(m_nCursorOffset, szText, nLength, erase_len))
return 0;
break;
default:
return 0;
}
// update cursor+selection positions
m_nCursorOffset += nLength;
m_nSelectionStart = m_nCursorOffset;
m_nSelectionEnd = m_nCursorOffset;
// we altered the document, recalculate line+scrollbar information
ResetLineCache();
RefreshWindow();
Smeg(TRUE);
NotifyParent(TVN_CURSOR_CHANGE);
return nLength;
}
//
// TextView::EnterText
//
// Import the specified text into the TextView at the current
// cursor position, replacing any text-selection in the process
//
ULONG TextViewBase::EnterText(const TCHAR *szText, ULONG nLength)
{
#ifdef _DEBUG
wchar_t db_string[200];
wsprintf(db_string, L"EnterText m_nSelectionEnd=%d\n", m_nSelectionEnd);
OutputDebugString(db_string);
#endif
ULONG selstart = min(m_nSelectionStart, m_nSelectionEnd);
ULONG selend = max(m_nSelectionStart, m_nSelectionEnd);
BOOL fReplaceSelection = (selstart == selend) ? FALSE : TRUE;
ULONG erase_len = nLength;
ULONG line_offset = 0, line_length = 0;
bool result = m_pTextDoc->lineinfo_from_lineno(m_nCurrentLine_D, &line_offset, &line_length, NULL, NULL);
if(m_nCurrentLine_D != 0 && !result)
{
int stop = 1;
throw MnException();
}
switch(m_nEditMode)
{
case MODE_READONLY:
return 0;
case MODE_INSERT:
// if there is a selection then remove it
if(fReplaceSelection)
{
// group this erase with the insert/replace operation
m_pTextDoc->m_seq.group();
m_pTextDoc->erase_text(selstart, selend-selstart);
m_nSelectionEnd = selstart;
}
if(!m_pTextDoc->insert_text(m_nSelectionEnd, szText, nLength))
return 0;
if(fReplaceSelection)
m_pTextDoc->m_seq.ungroup();
break;
case MODE_OVERWRITE:
if(fReplaceSelection)
{
erase_len = selend - selstart;
m_nSelectionEnd = selstart;
}
else
{
//ULONG lastPosition;
ULONG lineoff;
ULONG length_CRLF;
/*
USPCACHE *uspCache = GetUspCache(0, m_nCurrentLine, &lineoff);*/
GetOffsetAndLength_CRLF( m_nCurrentLine_D, &lineoff, &length_CRLF);
// single-character overwrite - must behave like 'forward delete'
// and remove a whole character-cluster (i.e. maybe more than 1 char)
if(nLength == 1)
{
ULONG oldpos = m_nSelectionEnd;
MoveCharNext();
erase_len = m_nSelectionEnd - oldpos;
m_nSelectionEnd = oldpos;
}
// if we are at the end of a line (just before the CRLF) then we must
// not erase any text - instead we act like a regular insertion
if (m_nSelectionEnd == lineoff + length_CRLF)
erase_len = 0;
}
if(!m_pTextDoc->replace_text(m_nSelectionEnd, szText, nLength, erase_len))
return 0;
break;
default:
return 0;
}
// update cursor+selection positions
m_nSelectionEnd += nLength;
m_nSelectionStart = m_nSelectionEnd;
//m_nSelectionEnd = m_nCursorOffset;
// we altered the document, recalculate line+scrollbar information
//RefreshWindow();
int a1 = '\n';
int a2 = '\r';
//ULONG offset, len;
if(nLength == 1 && !fReplaceSelection && line_length < MAX_LINE_LENGTH - 1)
{
FilePosToCharPos(m_nSelectionEnd, &m_CurrentCharPos);
if(szText[0] =='\n' )
{
wchar_t debug[50];
wsprintf(debug, L"newline m_nCursorOffset%d", m_nSelectionEnd);
OutputDebugString(debug);
Smeg(TRUE);
}
else if(szText[0] =='\r')
{
}
else
{
m_pTextDoc->init_linebuffer();
ResetLineCache( m_nCurrentLine_D);
InvalidateRange(m_nSelectionEnd - 1, line_offset + line_length + 1);
RepositionCaret();
}
}else
{
//ResetLineCache( );
Smeg(TRUE);
}
NotifyParent(TVN_CURSOR_CHANGE);
return nLength;
}
//
// Process keyboard-navigation keys
//
LONG TextViewBase::OnKeyDown(UINT nKeyCode, UINT nFlags)
{
bool fCtrlDown = IsKeyPressed(VK_CONTROL);
bool fShiftDown = IsKeyPressed(VK_SHIFT);
BOOL fAdvancing = FALSE;
long oldCursorOffset = m_nSelectionEnd;
//
// Process the key-press. Cursor movement is different depending
// on if <ctrl> is held down or not, so act accordingly
//
switch(nKeyCode)
{
case VK_SHIFT: case VK_CONTROL:
return 0;
case 'a': case 'A':
{
if(fCtrlDown)
SelectAll();
}
return 0;
// CTRL+Z undo
case 'z': case 'Z':
if(fCtrlDown && Undo())
/*NotifyParent(TVN_CHANGED);*/
return 0;
// CTRL+Y redo
case 'y': case 'Y':
if(fCtrlDown && Redo())
//NotifyParent(TVN_CHANGED);
return 0;
// CTRL+C copy
case 'c': case 'C':
{
//if(fCtrlDown && Redo())
// NotifyParent(TVN_CHANGED);
if(fCtrlDown)
return OnCopy();
else
break;
}
case 'x': case 'X':
{
if(fCtrlDown)
return OnCut();
else
break;
}
case 'v': case 'V':
{
if(fCtrlDown)
return OnPaste();
else
break;
}
// Change insert mode / clipboard copy&paste
case VK_INSERT:
if(fCtrlDown)
{
OnCopy();
NotifyParent(TVN_CHANGED);
}
else if(fShiftDown)
{
OnPaste();
NotifyParent(TVN_CHANGED);
}
else
{
if(m_nEditMode == MODE_INSERT)
m_nEditMode = MODE_OVERWRITE;
else if(m_nEditMode == MODE_OVERWRITE)
m_nEditMode = MODE_INSERT;
NotifyParent(TVN_EDITMODE_CHANGE);
}
return 0;
case VK_DELETE:
if(m_nEditMode != MODE_READONLY)
{
if(fShiftDown)
OnCut();
else
ForwardDelete();
NotifyParent(TVN_CHANGED);
}
return 0;
case VK_BACK:
if(m_nEditMode != MODE_READONLY)
{
BackDelete();
fAdvancing = FALSE;
NotifyParent(TVN_CHANGED);
}
return 0;
case VK_LEFT:
if(fCtrlDown) MoveWordPrev();
else MoveCharPrev();
fAdvancing = FALSE;
break;
case VK_RIGHT:
if(fCtrlDown) MoveWordNext();
else MoveCharNext();
fAdvancing = TRUE;
break;
case VK_UP:
if(fCtrlDown) Scroll(0, -1);
else MoveLineUp(1);
break;
case VK_DOWN:
if(fCtrlDown) Scroll(0, 1);
else MoveLineDown(1);
break;
case VK_PRIOR:
if(!fCtrlDown) MovePageUp();
break;
case VK_NEXT:
if(!fCtrlDown) MovePageDown();
break;
case VK_HOME:
if(fCtrlDown) MoveFileStart();
else MoveLineStart(m_nCurrentLine);
break;
case VK_END:
if(fCtrlDown) MoveFileEnd();
else MoveLineEnd(m_nCurrentLine);
break;
default:
return 0;
}
// Extend selection if <shift> is down
if(fShiftDown)
{
InvalidateRange(m_nSelectionEnd, oldCursorOffset);
//m_nSelectionEnd = m_nCursorOffset;
}
// Otherwise clear the selection
else
{
if(m_nSelectionStart != m_nSelectionEnd)
InvalidateRange(m_nSelectionStart, m_nSelectionEnd);
//m_nSelectionEnd = m_nCursorOffset;
m_nSelectionStart = m_nSelectionEnd;
}
// update caret-location (xpos, line#) from the offset
//UpdateCaretOffset(m_nCursorOffset, fAdvancing, &m_nCaretPosX, &m_nCurrentLine);
CHAR_POS cp;
FilePosToCharPos(m_nSelectionEnd, &cp);
m_nCurrentLine_D = cp.logLine;
// maintain the caret 'anchor' position *except* for up/down actions
if(nKeyCode != VK_UP && nKeyCode != VK_DOWN)
{
//m_nAnchorPosX = m_nCaretPosX;
// scroll as necessary to keep caret within viewport
//ScrollToPosition(m_nCaretPosX, m_nCurrentLine);
}
else
{
// scroll as necessary to keep caret within viewport
if(!fCtrlDown);
//ScrollToPosition(m_nCaretPosX, m_nCurrentLine);
}
NotifyParent(TVN_CURSOR_CHANGE);
return 0;
}
BOOL TextViewBase::ForwardDelete()
{
ULONG selstart = min(m_nSelectionStart, m_nSelectionEnd);
ULONG selend = max(m_nSelectionStart, m_nSelectionEnd);
ULONG length = selend - selstart;
bool nead_Smeg = false;
ULONG line_offset, line_length, line_no;
m_pTextDoc->lineinfo_from_offset(selstart, &line_no, &line_offset, &line_length,NULL, NULL);
if(selstart != selend)
{
if(selstart + length >= line_length + line_offset)
{
nead_Smeg = true;
}
m_pTextDoc->erase_text(selstart, length);
//m_nCursorOffset = selstart;
m_pTextDoc->m_seq.breakopt();
}
else
{
ULONG oldpos = m_nSelectionEnd;
MoveCharNext();
length = m_nSelectionEnd - oldpos;
m_pTextDoc->erase_text(oldpos, length);
m_nSelectionEnd = oldpos;
if(oldpos + length >= line_length + line_offset)
{
nead_Smeg = true;
}
//else
// m_pTextDoc->erase_text(m_nCursorOffset, 1);
}
m_nSelectionStart = selstart;
m_nSelectionEnd = selstart;
FilePosToCharPos(selstart, &m_CurrentCharPos);
if(nead_Smeg)
{
Smeg(FALSE);
}else
{
m_pTextDoc->init_linebuffer();
if(m_pTextDoc->lineinfo_from_lineno(m_nCurrentLine_D, &line_offset, &line_length ,NULL,NULL))
{
ResetLineCache( m_nCurrentLine_D);
InvalidateRange(min(m_nSelectionEnd - 1, 0), line_offset + line_length);
RepositionCaret();
}
}
return TRUE;
}
