| 1 | /*
|
|---|
| 2 | * Project: MoleCuilder
|
|---|
| 3 | * Description: creates and alters molecular systems
|
|---|
| 4 | * Copyright (C) 2010-2012 University of Bonn. All rights reserved.
|
|---|
| 5 | *
|
|---|
| 6 | *
|
|---|
| 7 | * This file is part of MoleCuilder.
|
|---|
| 8 | *
|
|---|
| 9 | * MoleCuilder is free software: you can redistribute it and/or modify
|
|---|
| 10 | * it under the terms of the GNU General Public License as published by
|
|---|
| 11 | * the Free Software Foundation, either version 2 of the License, or
|
|---|
| 12 | * (at your option) any later version.
|
|---|
| 13 | *
|
|---|
| 14 | * MoleCuilder is distributed in the hope that it will be useful,
|
|---|
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 17 | * GNU General Public License for more details.
|
|---|
| 18 | *
|
|---|
| 19 | * You should have received a copy of the GNU General Public License
|
|---|
| 20 | * along with MoleCuilder. If not, see <http://www.gnu.org/licenses/>.
|
|---|
| 21 | */
|
|---|
| 22 |
|
|---|
| 23 | /*
|
|---|
| 24 | * ChangeTracker.cpp
|
|---|
| 25 | *
|
|---|
| 26 | * Created on: Mar 1, 2010
|
|---|
| 27 | * Author: metzler
|
|---|
| 28 | */
|
|---|
| 29 |
|
|---|
| 30 | // include config.h
|
|---|
| 31 | #ifdef HAVE_CONFIG_H
|
|---|
| 32 | #include <config.h>
|
|---|
| 33 | #endif
|
|---|
| 34 |
|
|---|
| 35 | //#include "CodePatterns/MemDebug.hpp"
|
|---|
| 36 |
|
|---|
| 37 | #include "Atom/AtomObserver.hpp"
|
|---|
| 38 | #include "CodePatterns/Singleton_impl.hpp"
|
|---|
| 39 | #include "CodePatterns/Log.hpp"
|
|---|
| 40 | #include "CodePatterns/Verbose.hpp"
|
|---|
| 41 | #include "Parser/ChangeTracker.hpp"
|
|---|
| 42 | #include "World.hpp"
|
|---|
| 43 |
|
|---|
| 44 | /**
|
|---|
| 45 | * Constructor. Signs on as an observer for the World.
|
|---|
| 46 | */
|
|---|
| 47 | ChangeTracker::ChangeTracker() :
|
|---|
| 48 | Observable("ChangeTracker"),
|
|---|
| 49 | isConsistent(true)
|
|---|
| 50 | {
|
|---|
| 51 | World::getInstance().signOn(this);
|
|---|
| 52 | AtomObserver::getInstance().signOn(this);
|
|---|
| 53 | }
|
|---|
| 54 |
|
|---|
| 55 | /**
|
|---|
| 56 | * Destructor. Signs off from the World.
|
|---|
| 57 | */
|
|---|
| 58 | ChangeTracker::~ChangeTracker()
|
|---|
| 59 | {
|
|---|
| 60 | AtomObserver::getInstance().signOff(this);
|
|---|
| 61 | World::getInstance().signOff(this);
|
|---|
| 62 | }
|
|---|
| 63 |
|
|---|
| 64 | /**
|
|---|
| 65 | * With this, the World can update the change tracker's state.
|
|---|
| 66 | */
|
|---|
| 67 | void ChangeTracker::update(Observable *publisher) {
|
|---|
| 68 | isConsistent = false;
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | /**
|
|---|
| 72 | * Gets whether there are non-saved changes.
|
|---|
| 73 | *
|
|---|
| 74 | * \param true if there are any changes, false otherwise
|
|---|
| 75 | */
|
|---|
| 76 | bool ChangeTracker::hasChanged() {
|
|---|
| 77 | return !isConsistent;
|
|---|
| 78 | }
|
|---|
| 79 |
|
|---|
| 80 | /**
|
|---|
| 81 | * Tells all observers (which are the different parsers) that they are supposed
|
|---|
| 82 | * to save the current state.
|
|---|
| 83 | */
|
|---|
| 84 | void ChangeTracker::saveStatus() {
|
|---|
| 85 | if (hasChanged()) {
|
|---|
| 86 | LOG(0, "Saving changes.");
|
|---|
| 87 | notifyAll();
|
|---|
| 88 | }
|
|---|
| 89 | }
|
|---|
| 90 |
|
|---|
| 91 | CONSTRUCT_SINGLETON(ChangeTracker)
|
|---|
