LONG CutBlock(struct InstData *data, BOOL Clipboard, BOOL NoCut, BOOL update)
{
struct marking newblock;
LONG result;
ENTER();
//D(DBF_STARTUP, "CutBlock: %ld %ld %ld", Clipboard, NoCut, update);
NiceBlock(&data->blockinfo, &newblock);
if(!NoCut)
AddToUndoBuffer(ET_DELETEBLOCK, (char *)&newblock, data);
result = CutBlock2(data, Clipboard, NoCut, &newblock, update);
RETURN(result);
return(result);
}
long Undo(struct InstData *data)
{
ENTER();
D(DBF_UNDO, "undolevel: %ld undocur: %ld undofill: %ld", data->undolevel, data->undocur, data->undofill);
// check if there is something in the undo
// buffer available
if(data->undolevel > 0 && data->undocur > 0)
{
struct UserAction *buffer;
BOOL crsr_move = TRUE;
if(Enabled(data))
{
data->blockinfo.enabled = FALSE;
MarkText(data->blockinfo.startx, data->blockinfo.startline, data->blockinfo.stopx, data->blockinfo.stopline, data);
}
// as the redo operation automatically
// becomes available when undo is used we just
// check here if we didn't yet set RedoAvailable
// as we only want to set it once
if(data->undocur == data->undofill)
set(data->object, MUIA_TextEditor_RedoAvailable, TRUE);
data->undopointer = (APTR)((char *)data->undopointer - sizeof(struct UserAction));
data->undocur--;
buffer = (struct UserAction *)data->undopointer;
// if(data->actualline != LineNode(buffer->y, data) || data->CPos_X != buffer->x)
SetCursor(data->CPos_X, data->actualline, FALSE, data);
data->CPos_X = buffer->x;
data->actualline = LineNode(buffer->y, data);
ScrollIntoDisplay(data);
switch(buffer->type)
{
case ET_PASTECHAR:
{
buffer->del.character = *(data->actualline->line.Contents+data->CPos_X);
buffer->del.style = GetStyle(data->CPos_X, data->actualline);
buffer->del.flow = data->actualline->line.Flow;
buffer->del.separator = data->actualline->line.Separator;
RemoveChars(data->CPos_X, data->actualline, 1, data);
}
break;
case ET_BACKSPACECHAR:
{
PasteChars(data->CPos_X++, data->actualline, 1, (char *)&buffer->del.character, buffer, data);
}
break;
case ET_DELETECHAR:
{
PasteChars(data->CPos_X, data->actualline, 1, (char *)&buffer->del.character, buffer, data);
}
break;
case ET_SPLITLINE:
{
MergeLines(data->actualline, data);
}
break;
case ET_MERGELINES:
{
SplitLine(data->CPos_X, data->actualline, FALSE, buffer, data);
}
break;
case ET_BACKSPACEMERGE:
{
SplitLine(data->CPos_X, data->actualline, TRUE, buffer, data);
}
break;
case ET_PASTEBLOCK:
{
struct marking block =
{
TRUE,
LineNode(buffer->y, data),
buffer->x,
LineNode(buffer->blk.y, data),
buffer->blk.x
};
char *clip = GetBlock(&block, data);
CutBlock2(data, FALSE, FALSE, &block, TRUE);
buffer->clip = (unsigned char *)clip;
}
break;
case ET_DELETEBLOCK_NOMOVE:
crsr_move = FALSE;
// continue
case ET_DELETEBLOCK:
{
struct Hook *oldhook = data->ImportHook;
char *clip = (char *)buffer->clip;
data->ImportHook = &ImPlainHook;
InsertText(data, clip, crsr_move);
data->ImportHook = oldhook;
MyFreePooled(data->mypool, clip);
buffer->blk.x = data->CPos_X;
buffer->blk.y = LineNr(data->actualline, data);
if(!crsr_move)
{
data->CPos_X = buffer->x;
data->actualline = LineNode(buffer->y, data);
}
}
break;
default:
// nothing to do
break;
}
ScrollIntoDisplay(data);
if(data->flags & FLG_Active)
SetCursor(data->CPos_X, data->actualline, TRUE, data);
// if there are no further undo levels we
// have to set UndoAvailable to FALSE
if(data->undocur == 0)
{
set(data->object, MUIA_TextEditor_UndoAvailable, FALSE);
if(!(data->flags & FLG_UndoLost))
data->HasChanged = FALSE;
}
RETURN(TRUE);
return(TRUE);
}
else
{
DoMethod(data->object, MUIM_TextEditor_HandleError, Error_NothingToUndo);
RETURN(FALSE);
return(FALSE);
}
}
long Redo(struct InstData *data)
{
ENTER();
D(DBF_UNDO, "undolevel: %ld undocur: %ld undofill: %ld", data->undolevel, data->undocur, data->undofill);
// check if there something to redo at all
if(data->undofill > 0 && data->undocur < data->undofill)
{
struct UserAction *buffer = (struct UserAction *)data->undopointer;
if(Enabled(data))
{
data->blockinfo.enabled = FALSE;
MarkText(data->blockinfo.startx, data->blockinfo.startline, data->blockinfo.stopx, data->blockinfo.stopline, data);
}
// in case undocur is equal zero then we have to
// set the undoavailable attribute to true to signal
// others that undo is available
if(data->undocur == 0)
set(data->object, MUIA_TextEditor_UndoAvailable, TRUE);
data->undopointer = (APTR)((char *)data->undopointer + sizeof(struct UserAction));
data->undocur++;
// if(data->actualline != LineNode(buffer->y, data) || data->CPos_X != buffer->x)
SetCursor(data->CPos_X, data->actualline, FALSE, data);
data->CPos_X = buffer->x;
data->actualline = LineNode(buffer->y, data);
ScrollIntoDisplay(data);
switch(buffer->type)
{
case ET_PASTECHAR:
PasteChars(data->CPos_X++, data->actualline, 1, (char *)&buffer->del.character, buffer, data);
break;
case ET_BACKSPACECHAR:
case ET_DELETECHAR:
RemoveChars(data->CPos_X, data->actualline, 1, data);
break;
case ET_SPLITLINE:
SplitLine(data->CPos_X, data->actualline, TRUE, NULL, data);
break;
case ET_MERGELINES:
case ET_BACKSPACEMERGE:
MergeLines(data->actualline, data);
break;
case ET_PASTEBLOCK:
{
struct Hook *oldhook = data->ImportHook;
data->ImportHook = &ImPlainHook;
InsertText(data, (char *)buffer->clip, TRUE);
data->ImportHook = oldhook;
MyFreePooled(data->mypool, buffer->clip);
buffer->blk.x = data->CPos_X;
buffer->blk.y = LineNr(data->actualline, data);
}
break;
case ET_DELETEBLOCK_NOMOVE:
case ET_DELETEBLOCK:
{
struct marking block =
{
TRUE,
LineNode(buffer->y, data),
buffer->x,
LineNode(buffer->blk.y, data),
buffer->blk.x
};
char *clip = GetBlock(&block, data);
CutBlock2(data, FALSE, FALSE, &block, TRUE);
buffer->clip = (unsigned char *)clip;
}
break;
default:
// nothing to do
break;
}
ScrollIntoDisplay(data);
if(data->flags & FLG_Active)
SetCursor(data->CPos_X, data->actualline, TRUE, data);
// if undocur == undofill this signals that we
// don't have any things to redo anymore.
if(data->undocur == data->undofill)
set(data->object, MUIA_TextEditor_RedoAvailable, FALSE);
RETURN(TRUE);
return(TRUE);
}
else
{
DoMethod(data->object, MUIM_TextEditor_HandleError, Error_NothingToRedo);
RETURN(FALSE);
return(FALSE);
}
}
