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//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright : (C) 2014 Eran Ifrah
// file name : cl_unredo.cpp
//
// -------------------------------------------------------------------------
// A
// _____ _ _ _ _
// / __ \ | | | | (_) |
// | / \/ ___ __| | ___| | _| |_ ___
// | | / _ \ / _ |/ _ \ | | | __/ _ )
// | \__/\ (_) | (_| | __/ |___| | || __/
// \____/\___/ \__,_|\___\_____/_|\__\___|
//
// F i l e
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#include "cl_unredo.h"
#include "cl_editor.h"
CLCommandProcessor::CLCommandProcessor() : CommandProcessorBase()
{
m_initialCommand = new CLTextCommand(CLC_unknown);
m_initialCommand->Close();
}
void CLCommandProcessor::CloseSciUndoAction() const
{
wxCHECK_RET(GetParent(), "A parentless CLCommandProcessor");
GetParent()->BeginUndoAction(); // Tell scintilla to stop trying to append to the stale 'current' CLCommand. Yes, we *do* need both the Begin and End.
GetParent()->EndUndoAction();
}
void CLCommandProcessor::ProcessOpenCommand()
{
CommandProcessorBase::ProcessOpenCommand(); // Do the real work
CloseSciUndoAction();
}
void CLCommandProcessor::StartNewTextCommand(CLC_types type, const wxString& text)
{
wxCHECK_RET(!GetOpenCommand(), "Trying to start a new command when there's already an existing one");
if (CanRedo()) {
ClearRedos(); // Remove any now-stale redoable items
}
if (type == CLC_delete) {
Add( CLCommand::Ptr_t(new CLDeleteTextCommand) );
} else {
Add( CLCommand::Ptr_t(new CLInsertTextCommand) );
}
GetOpenCommand()->SetText(text);
}
void CLCommandProcessor::AppendToTextCommand(const wxString& text, int WXUNUSED(position))
{
wxCHECK_RET(GetOpenCommand(), "Trying to add to a non-existent or non-open command");
CLCommand::Ptr_t command = GetOpenCommand();
if (command->GetCommandType() == CLC_delete) {
// Reverse any incrementally-added string here, so that undoing an insertion of "abcd" gets displayed as: delete "abcd", not "dcba"
command->SetText(text + command->GetText());
} else {
command->SetText(command->GetText() + text);
}
}
bool CLCommandProcessor::DoUndo()
{
wxCHECK_MSG(CanUndo(), false, "Trying to Undo when you can't");
wxCHECK_MSG(GetParent(), false, "A parentless CLCommandProcessor");
GetParent()->Undo();
CloseSciUndoAction();
return true;
}
bool CLCommandProcessor::DoRedo()
{
wxCHECK_MSG(CanRedo(), false, "Trying to Redo when you can't");
wxCHECK_MSG(GetParent(), false, "A parentless CLCommandProcessor");
GetParent()->Redo();
CloseSciUndoAction();
return true;
}
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