EditRemove.cpp

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// ------------------------------------------------------------------------
// $RCSfile: EditRemove.cpp,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: EditRemove
//   The class for the OPAL sequence editor REMOVE command.
//
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:33:38 $
// $Author: Andreas Adelmann $
//
// ------------------------------------------------------------------------

#include "Editor/EditRemove.h"
#include "AbstractObjects/PlaceRep.h"
#include "Attributes/Attributes.h"
#include "Editor/Edit.h"
#include "Utilities/OpalException.h"
#include "Utilities/Options.h"
#include <iostream>


// Class EditRemove
// ------------------------------------------------------------------------

// The attributes of class EditRemove.
namespace {
    enum {
        SELECTED,  // If true, remove selected elements.
        CLASS,     // The class to be removed.
        SIZE
    };
}


EditRemove::EditRemove():
    Editor(SIZE, "REMOVE",
           "The \"REMOVE\" sub-command removes element(s) from the sequence "
           "being edited.") {
    itsAttr[SELECTED] = Attributes::makeBool
                        ("SELECTED", "If true, all selected elements are removed");
    itsAttr[CLASS] = Attributes::makePlace
                     ("CLASS", "Name of element class to be removed");

    registerOwnership(AttributeHandler::SUB_COMMAND);
}


EditRemove::EditRemove(const std::string &name, EditRemove *parent):
    Editor(name, parent)
{}


EditRemove::~EditRemove()
{}


EditRemove *EditRemove::clone(const std::string &name) {
    return new EditRemove(name, this);
}


void EditRemove::execute() {
    int count = 0;

    if(Attributes::getBool(itsAttr[SELECTED])) {
        count = Edit::block->removeMultiple();
    } else if(itsAttr[CLASS]) {
        const PlaceRep pos = Attributes::getPlace(itsAttr[CLASS]);
        count = Edit::block->removeSingle(pos);
    } else {
        throw OpalException("EditRemove::execute()",
                            "\"class=selected\" or \"class=<name>\" "
                            "is required for \"REMOVE\".");
    }

    if(Options::info) {
        if(count == 0) {
            std::cerr << "\nNo elements";
        } else if(count == 1) {
            std::cerr << "\n1 element";
        } else {
            std::cerr << '\n' << count << " elements";
        }

        std::cerr << " removed.\n" << std::endl;
    }
}