comparison: src/misc/documentPointer.cc
src/misc/documentPointer.cc
- changeset 655
- b376645315ab
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| 654:a74f2ff353b8 | 655:b376645315ab |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013, 2014 Santeri Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #include "documentPointer.h" | |
| 20 #include "../ldDocument.h" | |
| 21 #include "../miscallenous.h" | |
| 22 | |
| 23 LDDocumentPointer::LDDocumentPointer() : m_pointer (null) {} | |
| 24 | |
| 25 // ============================================================================= | |
| 26 // | |
| 27 LDDocumentPointer::LDDocumentPointer (LDDocument* ptr) : | |
| 28 m_pointer (ptr) | |
| 29 { | |
| 30 addReference (); | |
| 31 } | |
| 32 | |
| 33 // ============================================================================= | |
| 34 // | |
| 35 LDDocumentPointer::LDDocumentPointer (const LDDocumentPointer& other) : | |
| 36 m_pointer (other.pointer()) | |
| 37 { | |
| 38 addReference (); | |
| 39 } | |
| 40 | |
| 41 // ============================================================================= | |
| 42 // | |
| 43 LDDocumentPointer::~LDDocumentPointer() | |
| 44 { | |
| 45 removeReference(); | |
| 46 } | |
| 47 | |
| 48 // ============================================================================= | |
| 49 // | |
| 50 void LDDocumentPointer::addReference() | |
| 51 { | |
| 52 if (pointer() != null) | |
| 53 pointer()->addReference (this); | |
| 54 } | |
| 55 | |
| 56 // ============================================================================= | |
| 57 // | |
| 58 void LDDocumentPointer::removeReference() | |
| 59 { | |
| 60 if (pointer() != null) | |
| 61 pointer()->removeReference (this); | |
| 62 } | |
| 63 | |
| 64 // ============================================================================= | |
| 65 // | |
| 66 LDDocumentPointer& LDDocumentPointer::operator= (LDDocument* ptr) | |
| 67 { | |
| 68 if (ptr != pointer()) | |
| 69 { | |
| 70 removeReference(); | |
| 71 setPointer (ptr); | |
| 72 addReference(); | |
| 73 } | |
| 74 | |
| 75 return *this; | |
| 76 } |
