/*
 * Copyright 2006, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Stephan Aßmus <superstippi@gmx.de>
 */

#include "AddPointCommand.h"

#include <stdio.h>

#include <Catalog.h>
#include <Locale.h>

#include "VectorPath.h"


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "Icon-O-Matic-AddPointCmd"


// constructor
AddPointCommand::AddPointCommand(VectorPath* path,
                                                                 int32 index,
                                                                 const int32* selected,
                                                                 int32 count)
        : PathCommand(path),
          fIndex(index),
          fOldSelection(NULL),
          fOldSelectionCount(count)
{
        if (fOldSelectionCount > 0 && selected) {
                fOldSelection = new int32[fOldSelectionCount];
                memcpy(fOldSelection, selected, fOldSelectionCount * sizeof(int32));
        }
}

// destructor
AddPointCommand::~AddPointCommand()
{
        delete[] fOldSelection;
}

// Perform
status_t
AddPointCommand::Perform()
{
        status_t status = InitCheck();
        if (status < B_OK)
                return status;

        // path point is already added,
        // but we don't know the parameters yet
        if (!fPath->GetPointsAt(fIndex, fPoint, fPointIn, fPointOut))
                status = B_NO_INIT;

        return status;
}

// Undo
status_t
AddPointCommand::Undo()
{
        status_t status = InitCheck();
        if (status < B_OK)
                return status;

        // remove point
        if (fPath->RemovePoint(fIndex)) {
                // restore selection before adding point
                _Select(fOldSelection, fOldSelectionCount);
        } else {
                status = B_ERROR;
        }

        return status;
}

// Redo
status_t
AddPointCommand::Redo()
{
        status_t status = InitCheck();
        if (status < B_OK)
                return status;

        AutoNotificationSuspender _(fPath);

        // add point again
        if (fPath->AddPoint(fPoint, fIndex)) {
                fPath->SetPoint(fIndex, fPoint, fPointIn, fPointOut, true);
                // select added point
                _Select(&fIndex, 1);
        } else {
                status = B_ERROR;
        }

        return status;
}

// GetName
void
AddPointCommand::GetName(BString& name)
{
        name << B_TRANSLATE("Add vertex");
}