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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
21 : #define INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
22 :
23 : #include <comphelper/comphelperdllapi.h>
24 :
25 : #include <com/sun/star/uno/Reference.hxx>
26 : #include <com/sun/star/lang/IllegalArgumentException.hpp>
27 : #include <com/sun/star/uno/XInterface.hpp>
28 : #include <com/sun/star/frame/XUntitledNumbers.hpp>
29 :
30 : #include <cppuhelper/basemutex.hxx>
31 : #include <cppuhelper/weakref.hxx>
32 : #include <cppuhelper/implbase1.hxx>
33 : #include <boost/functional/hash.hpp>
34 : #include <unordered_map>
35 : #include <vector>
36 :
37 :
38 : namespace comphelper{
39 :
40 : /** @short defines a collection of UNO components, where every component will get its own unique number.
41 :
42 : @descr Such number will be unique at runtime only ... but it supports fragmentation.
43 : Note: This collection uses weak references only to know her components.
44 : So lifetime of thise components must be controlled outside.
45 :
46 : @threadsafe
47 : */
48 : class COMPHELPER_DLLPUBLIC NumberedCollection : private ::cppu::BaseMutex
49 : , public ::cppu::WeakImplHelper1< css::frame::XUntitledNumbers >
50 : {
51 :
52 : // types, const
53 : private:
54 :
55 21873 : struct TNumberedItem
56 : {
57 : css::uno::WeakReference< css::uno::XInterface > xItem;
58 : ::sal_Int32 nNumber;
59 : };
60 :
61 : typedef std::unordered_map<
62 : long ,
63 : TNumberedItem ,
64 : ::boost::hash< long > ,
65 : ::std::equal_to< long > > TNumberedItemHash;
66 :
67 : typedef ::std::vector< long > TDeadItemList;
68 :
69 :
70 : // interface
71 : public:
72 :
73 :
74 : /** @short lightweight constructor.
75 : */
76 : NumberedCollection();
77 :
78 :
79 : /** @short free all internally used resources.
80 : */
81 : virtual ~NumberedCollection();
82 :
83 :
84 : /** set an outside component which uses this container and must be set
85 : as source of all broadcasted messages, exceptions.
86 :
87 : It's holded weak only so we do not need any complex dispose sessions.
88 :
89 : Note: Passing NULL as parameter will be allowed. It will reset the internal
90 : member reference only.
91 :
92 : @param xOwner
93 : the new owner of this collection.
94 : */
95 : void setOwner (const css::uno::Reference< css::uno::XInterface >& xOwner);
96 :
97 :
98 : /** set the localized prefix to be used for untitled components.
99 :
100 : Localization has to be done outside. This container will return
101 : those value then. There are no further checks. Its up to you to define
102 : a suitable string here :-)
103 :
104 : @param sPrefix
105 : the new prefix for untitled components.
106 : */
107 : void setUntitledPrefix(const OUString& sPrefix);
108 :
109 :
110 : /** @see css.frame.XUntitledNumbers */
111 : virtual ::sal_Int32 SAL_CALL leaseNumber(const css::uno::Reference< css::uno::XInterface >& xComponent)
112 : throw (css::lang::IllegalArgumentException,
113 : css::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
114 :
115 :
116 : /** @see css.frame.XUntitledNumbers */
117 : virtual void SAL_CALL releaseNumber(::sal_Int32 nNumber)
118 : throw (css::lang::IllegalArgumentException,
119 : css::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
120 :
121 :
122 : /** @see css.frame.XUntitledNumbers */
123 : virtual void SAL_CALL releaseNumberForComponent(const css::uno::Reference< css::uno::XInterface >& xComponent)
124 : throw (css::lang::IllegalArgumentException,
125 : css::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
126 :
127 :
128 : /** @see css.frame.XUntitledNumbers */
129 : virtual OUString SAL_CALL getUntitledPrefix()
130 : throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
131 :
132 :
133 : // internal
134 : private:
135 :
136 :
137 : /** @short trys to find an unique number not already used within this collection.
138 :
139 : @descr It reuses the smalles number which isn't used by any component
140 : of this collection. (fragmentation!) If collection is full (means there
141 : is no free number) the special value INVALID_NUMBER will be returned.
142 :
143 : @note Those method can't be called within a multithreaded environment ..
144 : Because such number wont be "reserved" for the calli of these method
145 : it can happen that two calls returns the same number (reasoned by the fact that first calli
146 : doesn't used the returned number already.
147 :
148 : So the outside code has to make sure that retrieving and using of those number
149 : will be an atomic operation.
150 :
151 : @return an unique number or special value INVALID_NUMBER if collection is full.
152 : */
153 : ::sal_Int32 impl_searchFreeNumber ();
154 :
155 : static void impl_cleanUpDeadItems ( TNumberedItemHash& lItems ,
156 : const TDeadItemList& lDeadItems);
157 :
158 :
159 : // member
160 : private:
161 :
162 : /// localized string to be used for untitled components
163 : OUString m_sUntitledPrefix;
164 :
165 : /// cache of all "leased numbers" and its bound components
166 : TNumberedItemHash m_lComponents;
167 :
168 : /// used as source of broadcasted messages or exceptions (can be null !)
169 : css::uno::WeakReference< css::uno::XInterface > m_xOwner;
170 : };
171 :
172 : } // namespace comphelper
173 :
174 : #endif // INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
175 :
176 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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