DeleteComponentCmd.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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    copy of this software and associated documentation files (the "Software"),
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/**
 * @file DeleteComponentCmd.cc
 *
 * Implementation of DeleteComponentCmd class.
 *
 * @author Veli-Pekka Jääskeläinen (vjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include <wx/docview.h>
 
#include "DeleteComponentCmd.hh"
#include "ComponentCommand.hh"
#include "MDFView.hh"
#include "Request.hh"
#include "MDFDocument.hh"
#include "EditPart.hh"
#include "ProDeConstants.hh"
 
using std::string;
 
/**
 * The Constructor.
 */
DeleteComponentCmd::DeleteComponentCmd():
    EditorCommand(ProDeConstants::CMD_NAME_DELETE_COMP) {
 
}
 
 
 
/**
 * Executes the command.
 *
 * @return True, if the command was succesfully executed, false otherwise.
 */
bool
DeleteComponentCmd::Do() {
 
    assert(parentWindow() != NULL);
    assert(view() != NULL);
 
    // send delete request to the selected EditPart
    Request* deleteRequest = new Request(Request::DELETE_REQUEST);
    EditPart* selected = dynamic_cast<MDFView*>(view())->selection();
    if (selected == NULL) {
    return false;
    }
 
    ComponentCommand* command = selected->performRequest(deleteRequest);
 
    // execute the returned command
    if (command == NULL) {
    return false;
    } else {
    Model* model = dynamic_cast<MDFDocument*>(
        wxGetApp().docManager()->GetCurrentDocument())->getModel();
 
    model->pushToStack();
 
        dynamic_cast<MDFView*>(view())->clearSelection();
        bool result = command->Do();
 
    if (result) {
        // Model was modified.
        model->notifyObservers();
    } else {
        // Command was cancelled.
        model->popFromStack();
    }
    return result;
    }
}
 
 
/**
 * Returns command identifier of this command.
 *
 * @return ID for this command to be used in menus and toolbars.
 */
int
DeleteComponentCmd::id() const{
    return ProDeConstants::COMMAND_DELETE_COMP;
}
 
 
/**
 * Creates and returns a new instance of this command.
 *
 * @return Newly created instance of this command.
 */
DeleteComponentCmd*
DeleteComponentCmd::create() const {
    return new DeleteComponentCmd();
}
 
 
/**
 * Returns short version of the command name.
 *
 * @return Short name of the command to be used in the toolbar.
 */
string
DeleteComponentCmd::shortName() const {
    return ProDeConstants::CMD_SNAME_DELETE_COMP;
}
 
/**
 * Returns path to the command's icon file.
 *
 * @return Full path to the command's icon file.
 */
string
DeleteComponentCmd::icon() const {
    return ProDeConstants::CMD_ICON_DELETE_COMP;
}
 
 
 
/**
 * Returns true when the command is executable, false when not.
 *
 * This command is executable when a block is selected, and the
 * block can handle a delete request.
 *
 * @return True, if a deletable block is selected.
 */
bool
DeleteComponentCmd::isEnabled() {
    wxDocManager* manager = wxGetApp().docManager();
 
    MDFView* mdfView = dynamic_cast<MDFView*>(manager->GetCurrentView());
    if (mdfView == NULL) {
    return false;
    }
    Request* deleteRequest = new Request(Request::DELETE_REQUEST);
    if (mdfView->selection() == NULL ||
        !mdfView->selection()->canHandle(deleteRequest)) {
 
    return false;
    }
    delete deleteRequest;
    return true;
}