ProDeSocketEditPolicy.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file ProDeSocketEditPolicy.cc
 *
 * Definition of ProDeSocketEditPolicy class.
 *
 * @author Ari Metsähalme 2003 (ari.metsahalme-no.spam-tut.fi)
 * @note rating: yellow
 * @note reviewed Jul 20 2004 by vpj, jn, am
 */
 
#include <boost/format.hpp>
 
#include "ProDeSocketEditPolicy.hh"
#include "Request.hh"
#include "ConnectRequest.hh"
#include "ComponentCommand.hh"
#include "ModifySocketCmd.hh"
#include "DeleteSocketCmd.hh"
#include "CopyComponent.hh"
#include "SetStatusTextCmd.hh"
#include "ProDeTextGenerator.hh"
#include "EditPart.hh"
#include "Socket.hh"
#include "Port.hh"
#include "Segment.hh"
#include "Unit.hh"
#include "Bus.hh"
#include "MachineTester.hh"
#include "SocketPortConnCmd.hh"
#include "SocketBusConnCmd.hh"
 
using boost::format;
using namespace TTAMachine;
 
/**
 * The Constructor.
 */
ProDeSocketEditPolicy::ProDeSocketEditPolicy(): EditPolicy() {
}
 
/**
 * The Destructor.
 */
ProDeSocketEditPolicy::~ProDeSocketEditPolicy() {
}
 
/**
 * Returns the Command corresponding to the type of the Request.
 *
 * @param request Request to be handled.
 * @return NULL if the Request cannot be handled.
 */
ComponentCommand*
ProDeSocketEditPolicy::getCommand(Request* request) {
 
    Request::RequestType type = request->type();
 
    if (type == Request::MODIFY_REQUEST) {
        ModifySocketCmd* modifyCmd = new ModifySocketCmd(host_);
        return modifyCmd;
 
    } else if (type == Request::DELETE_REQUEST) {
        DeleteSocketCmd* deleteCmd = new DeleteSocketCmd(host_);
        return deleteCmd;
 
    } else if (type == Request::COPY_REQUEST) {
        CopyComponent* copyCmd = new CopyComponent(host_);
        return copyCmd;
 
    } else if (type == Request::STATUS_REQUEST) {
        Socket* socket = dynamic_cast<Socket*>(host_->model());
        ProDeTextGenerator* generator = ProDeTextGenerator::instance();
        format fmt = generator->text(ProDeTextGenerator::STATUS_SOCKET);
        fmt % socket->name();
        SetStatusTextCmd* statusCmd = new SetStatusTextCmd(fmt.str());
        return statusCmd;
    } if (type == Request::CONNECT_REQUEST) {
        return createConnectCmd(request);
    } else {
    return NULL;
    }
}
 
/**
 * Tells whether this EditPolicy is able to handle a certain type
 * of Request.
 *
 * @param request Request to be asked if it can be handled.
 * @return True if the Request can be handled, false otherwise.
 */
bool
ProDeSocketEditPolicy::canHandle(Request* request) const {
    Request::RequestType type = request->type();
    if (type == Request::MODIFY_REQUEST ||
    type == Request::DELETE_REQUEST ||
        type == Request::COPY_REQUEST ||
        type == Request::STATUS_REQUEST) {
    return true;
    } else if (type == Request::CONNECT_REQUEST) {
        ConnectRequest* cr = dynamic_cast<ConnectRequest*>(request);
        assert(cr != NULL);
        EditPart* part = cr->part();
 
        if (part == NULL) {
            // No selection.
            // Socket can be selected for connecting, return true.
            return true;
        }
 
        Port* port = dynamic_cast<Port*>(part->model());
        Segment* segment = dynamic_cast<Segment*>(part->model());
        if (port == NULL && segment == NULL) {
            // Socket can be connected only to ports and segments.
            return false;
        }
        MachineTester* tester = NULL;
        if (port != NULL) {
            tester = new MachineTester(*(port->parentUnit()->machine()));
        } else {
            tester = new MachineTester(*(segment->parentBus()->machine()));
        }
        Socket* socket = dynamic_cast<Socket*>(host_->model());
        if ((port != NULL && (
                 port->isConnectedTo(*socket) ||
                 tester->canConnect(*socket, *port))) ||
            (segment != NULL && (
                socket->isConnectedTo(*segment) ||
                tester->canConnect(*socket, *segment)))) {
 
            delete tester;
            return true;
        }
        delete tester;
        return false;
    } else {
    return false;
    }
}
 
 
/**
 * Creates a command which connects the selected component to the
 * requested component.
 *
 * @param request ConnectionRequest with the target component for the
 *                connection.
 * @return Command for connecting the selected and requested components.
 */
ComponentCommand*
ProDeSocketEditPolicy::createConnectCmd(Request* request) {
 
    ConnectRequest* cr = dynamic_cast<ConnectRequest*>(request);
    assert(cr != NULL);
    EditPart* part = cr->part();
 
    if (canHandle(request)) {
        Port* port = dynamic_cast<Port*>(part->model());
        Segment* segment = dynamic_cast<Segment*>(part->model());
        Socket* socket = dynamic_cast<Socket*>(host_->model());
        if (port == NULL && segment == NULL) {
            return NULL;
        }
        ComponentCommand* cmd = NULL;
        if (port != NULL) {
            cmd = new SocketPortConnCmd(socket, port);
        } else {
            cmd = new SocketBusConnCmd(socket, segment);
        }
        return cmd;
    } else {
        return NULL;
    }
}