void
JTEUndoDrop::Undo()
{
JTextEditor* te = GetTE();
te->SetSelection(itsNewSelStart, itsNewSelEnd);
te->DropSelection(itsOrigCaretLoc, kJFalse); // deletes us
}
void
JVIKeyHandler::YankToEndOfLine
(
const JBoolean del,
const JBoolean ins
)
{
JTextEditor* te = GetTE();
JIndexRange r;
r.first = te->GetInsertionIndex();
const JIndex line = te->GetLineForChar(r.first) + GetOperationCount() - 1;
r.last = te->GetLineEnd(line);
if (te->IndexValid(r.last) && te->GetText().GetCharacter(r.last) == '\n')
{
r.last--;
}
if (!r.IsEmpty())
{
CutBuffer* buf = GetCutBuffer(cutbufPattern);
buf->Set(te->GetText().GetSubstring(r), kJFalse);
if (del)
{
te->SetSelection(r);
te->DeleteSelection();
}
if (ins)
{
SetMode(kTextEntryMode);
}
}
}
void
JTEUndoStyle::Undo()
{
JTextEditor* te = GetTE();
te->SetSelection(itsStartIndex, itsStartIndex + itsOrigStyles->GetElementCount() - 1);
JTEUndoStyle* newUndo = new JTEUndoStyle(te);
assert( newUndo != NULL );
te->SetFont(itsStartIndex, *itsOrigStyles, kJFalse);
te->ReplaceUndo(this, newUndo); // deletes us
}
void
JVIKeyHandler::YankLines
(
const JArray<JIndexRange>& matchList,
const JBoolean del
)
{
JTextEditor* te = GetTE();
te->GoToBeginningOfLine();
const JIndex start = te->GetInsertionIndex();
MoveCaretVert(GetOperationCount());
JIndexRange r(start, te->GetInsertionIndex()-1);
if (!r.IsEmpty())
{
CutBuffer* buf = GetCutBuffer(yankDeletePattern, matchList);
buf->Set((te->GetText()).GetSubstring(r), kJTrue);
if (del)
{
te->SetSelection(r);
te->DeleteSelection();
}
}
}
void
JVIKeyHandler::SetMode
(
const Mode mode
)
{
itsMode = mode;
ClearKeyBuffers();
JTextEditor* te = GetTE();
if (mode == kTextEntryMode)
{
te->SetCaretMode(JTextEditor::kLineCaret);
}
else
{
te->SetCaretMode(JTextEditor::kBlockCaret);
}
}
JBoolean
JVIKeyHandler::PrehandleKeyPress
(
const JCharacter key,
JBoolean* result
)
{
JTextEditor* te = GetTE();
if (key == kJEscapeKey)
{
SetMode(kCommandMode);
JIndex index;
if (te->GetCaretLocation(&index) && index > 1 &&
(te->GetText()).GetCharacter(index-1) != '\n')
{
te->SetCaretLocation(index-1);
}
*result = kJTrue;
return kJTrue;
}
if (itsMode == kBufferNameMode)
{
itsMode = kCommandMode; // don't use SetMode()
itsKeyBuffer.AppendCharacter(key);
*result = kJTrue;
return kJTrue;
}
if (itsMode == kTextEntryMode)
{
*result = kJFalse;
return kJTrue;
}
return kJFalse;
}
JBoolean
JVIKeyHandler::HandleKeyPress
(
const JCharacter key,
const JBoolean selectText,
const JTextEditor::CaretMotion motion,
const JBoolean deleteToTabStop
)
{
JBoolean result;
if (PrehandleKeyPress(key, &result))
{
return result;
}
if (key == kJLeftArrow || key == kJRightArrow ||
key == kJUpArrow || key == kJDownArrow)
{
ClearKeyBuffers();
return kJFalse;
}
JTextEditor* te = GetTE();
JBoolean clearKeyBuffer = kJTrue;
JArray<JIndexRange> matchList;
JCharacter prevChar;
if (key == 'i')
{
SetMode(kTextEntryMode);
}
else if (key == 'I')
{
SetMode(kTextEntryMode);
const JBoolean save = te->WillMoveToFrontOfText();
te->ShouldMoveToFrontOfText(kJTrue);
te->GoToEndOfLine();
te->GoToBeginningOfLine();
te->ShouldMoveToFrontOfText(save);
}
else if (key == 'a')
{
SetMode(kTextEntryMode);
const JIndex i = te->GetInsertionIndex();
if (te->IndexValid(i) && (te->GetText()).GetCharacter(i) != '\n')
{
te->SetCaretLocation(te->GetInsertionIndex()+1);
}
}
else if (key == 'A')
{
SetMode(kTextEntryMode);
te->GoToEndOfLine();
}
else if (key == 'O')
{
SetMode(kTextEntryMode);
te->GoToBeginningOfLine();
const JIndex i = te->GetInsertionIndex();
te->SetCaretLocation(i-1);
InsertKeyPress('\n');
if (i == 1)
{
te->SetCaretLocation(1);
}
}
else if (key == 'o')
{
SetMode(kTextEntryMode);
te->GoToEndOfLine();
InsertKeyPress('\n');
}
else if ((key == '0' || key == '^') && itsKeyBuffer.IsEmpty())
{
te->GoToBeginningOfLine();
}
else if (key == '\n')
{
MoveCaretVert(1);
const JBoolean save = te->WillMoveToFrontOfText();
te->ShouldMoveToFrontOfText(kJTrue);
te->GoToEndOfLine();
te->GoToBeginningOfLine();
te->ShouldMoveToFrontOfText(save);
}
else if (key == 'G')
{
te->SetCaretLocation(te->GetTextLength()+1);
}
else if (isdigit(key)) // after 0 => beginning of line
{
if (!numberPattern.Match(itsKeyBuffer))
{
ClearKeyBuffers();
}
itsKeyBuffer.AppendCharacter(key);
clearKeyBuffer = kJFalse;
}
else if (key == '"')
{
itsMode = kBufferNameMode; // don't use SetMode()
itsKeyBuffer.AppendCharacter(key);
clearKeyBuffer = kJFalse;
}
else if (key == 'X' || key == 'x')
{
CutBuffer* buf = GetCutBuffer(cutbufPattern);
buf->Set("", kJFalse);
const JSize count = GetOperationCount();
JString s;
for (JIndex i=1; i<=count; i++)
{
if (key == 'X')
{
if (te->GetInsertionIndex() == 1)
{
break;
}
BackwardDelete(deleteToTabStop, &s);
}
else
{
if (te->GetInsertionIndex() >= te->GetTextLength())
{
break;
}
ForwardDelete(deleteToTabStop, &s);
}
buf->buf->Append(s);
}
}
else if (key == 'C' || key == 'D' ||
(key == '$' && GetPrevCharacter(&prevChar) &&
(prevChar == 'd' || prevChar == 'y')))
{
const JBoolean del = JNegate(GetPrevCharacter(&prevChar) && prevChar == 'y' && key == '$');
YankToEndOfLine(del, JI2B(key == 'C'));
}
else if ((key == 'Y' || key == 'y' || key == 'd') &&
yankDeletePattern.Match(itsKeyBuffer, &matchList))
{
if (key == 'Y' ||
(GetPrevCharacter(&prevChar) && prevChar == key))
{
YankLines(matchList, JI2B(key == 'd'));
}
else
{
itsKeyBuffer.AppendCharacter(key);
clearKeyBuffer = kJFalse;
}
}
else if (key == 'P' || key == 'p')
{
CutBuffer* buf = GetCutBuffer(cutbufPattern);
if (buf->buf != NULL)
{
const JIndex i = te->GetInsertionIndex();
if (buf->line)
{
te->GoToBeginningOfLine();
if (key == 'p')
{
MoveCaretVert(1);
}
}
else if (key == 'p' &&
(te->IndexValid(i) && (te->GetText()).GetCharacter(i) != '\n'))
{
te->SetCaretLocation(te->GetInsertionIndex()+1);
}
const JSize count = GetOperationCount();
for (JIndex i=1; i<=count; i++)
{
te->Paste(*(buf->buf));
}
}
}
else if (key == 'u')
{
te->Undo();
}
else if (key == '$') // after d$ and y$
{
te->GoToEndOfLine();
const JIndex i = te->GetInsertionIndex();
if (i > 1 && te->IndexValid(i) &&
(te->GetText()).GetCharacter(i) == '\n')
{
te->SetCaretLocation(i-1);
}
}
if (clearKeyBuffer)
{
ClearKeyBuffers();
}
return kJTrue;
}