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1 /*
2  * Copyright (c) 2011-2015, Intel Corporation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this
9  * list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation and/or
13  * other materials provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors
16  * may be used to endorse or promote products derived from this software without
17  * specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 #pragma once
31 
32 #include "ParameterBlackboard.h"
33 #include "SyncerSet.h"
34 #include "Results.h"
35 
36 class CConfigurableElement;
37 class CXmlElement;
38 class CConfigurationAccessContext;
39 
40 class CAreaConfiguration
41 {
42 public:
43     CAreaConfiguration(const CConfigurableElement *pConfigurableElement,
44                        const CSyncerSet *pSyncerSet);
45 
46     virtual ~CAreaConfiguration() = default;
47 
48     // Save data from current
49     void save(const CParameterBlackboard *pMainBlackboard);
50 
51     /** Restore the configuration area
52      *
53      * @param[in] pMainBlackboard the application main blackboard
54      * @param[in] bSync indicates if a synchronisation has to be done
55      * @param[out] errors, errors encountered during restoration
56      * @return true if success false otherwise
57      */
58     bool restore(CParameterBlackboard *pMainBlackboard, bool bSync, core::Results *errors) const;
59 
60     // Ensure validity
61     void validate(const CParameterBlackboard *pMainBlackboard);
62 
63     // Return validity
64     bool isValid() const;
65 
66     // Ensure validity against given valid area configuration
67     void validateAgainst(const CAreaConfiguration *pValidAreaConfiguration);
68 
69     // Compound handling
70     const CConfigurableElement *getConfigurableElement() const;
71 
72     // Configuration merging
73     virtual void copyToOuter(CAreaConfiguration *pToAreaConfiguration) const;
74 
75     // Configuration splitting
76     virtual void copyFromOuter(const CAreaConfiguration *pFromAreaConfiguration);
77 
78     // XML configuration settings parsing/composing
79     bool serializeXmlSettings(CXmlElement &xmlConfigurableElementSettingsElementContent,
80                               CConfigurationAccessContext &configurationAccessContext);
81 
82     // Fetch the Configuration Blackboard
83     CParameterBlackboard &getBlackboard();
84     const CParameterBlackboard &getBlackboard() const;
85 
86 protected:
87     CAreaConfiguration(const CConfigurableElement *pConfigurableElement,
88                        const CSyncerSet *pSyncerSet, size_t size);
89 
90 private:
91     // Blackboard copies
92     virtual void copyTo(CParameterBlackboard *pToBlackboard, size_t offset) const;
93     virtual void copyFrom(const CParameterBlackboard *pFromBlackboard, size_t offset);
94 
95     // Store validity
96     void setValid(bool bValid);
97 
98 protected:
99     // Associated configurable element
100     const CConfigurableElement *_pConfigurableElement;
101 
102     // Configurable element settings
103     CParameterBlackboard _blackboard;
104 
105 private:
106     // Syncer set (required for immediate synchronization)
107     const CSyncerSet *_pSyncerSet;
108 
109     // Area configuration validity (invalid area configurations can't be restored)
110     bool _bValid{false};
111 };
112