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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Header for a CActive based class that monitors for low disk space and |
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15 // is informed when a PDU is being received. Should memory be too low, |
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16 // an error code is returned causing a NAck. The class will then monitor |
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17 // for the point at which PDUs can be received again, and a Resume Reception |
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18 // will be sent to the network. |
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19 // The are two limits - a high limit for general SMSs and a low limit for |
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20 // class 0 SMSs. However there is only one way to resume reception of SMSs. So |
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21 // once a resume reception is sent, it resumes hoth types of SMSs. The algorithm |
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22 // is a bit simiplier because of this: |
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23 // IF sending non-Class 0 AND we are below the high limit THEN |
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24 // N'Ack SMS |
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25 // IF not waiting for free diskspace THEN |
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26 // Wait for free diskspace to rise above the high limit |
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27 // Resume SMS Reception. |
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28 // ELSE |
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29 // Continue waiting for either high limit or low limit |
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30 // Resume SMS Reception as previously intended |
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31 // END_IF |
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32 // ELSE IF sending Class 0 AND we are below the low limit THEN |
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33 // Wait for free diskspace to rise above the low limit |
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34 // Resume SMS Reception. |
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35 // END_IF |
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36 // Note that in the second and last case, SMS reception may be resumed before |
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37 // we are above the high limit, but in that case montioring will repeat when |
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38 // the next non-class 0 SMS is attempted to be delivered. This is necessary as |
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39 // there is no way to resume just class 0 SMSs. |
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40 // |
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41 // |
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42 |
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43 /** |
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44 @file |
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45 @internalComponent |
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46 */ |
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47 |
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48 |
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49 #ifndef __SMSPMONDSK_H__ |
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50 #define __SMSPMONDSK_H__ |
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51 |
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52 #include <etelmm.h> |
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53 #include <f32file.h> |
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54 |
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55 |
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56 /** |
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57 * The class is a simple active object derived state machine that monitors |
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58 * disk space needed for storage of incoming messages. |
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59 */ |
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60 class CSmsMonitorDiskSpace : public CActive |
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61 { |
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62 public: |
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63 static CSmsMonitorDiskSpace* NewL(MSmsComm& aSmsComm, RMobileSmsMessaging& aSmsMessaging, RFs& aFs); |
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64 ~CSmsMonitorDiskSpace(); |
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65 |
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66 void CheckDiskSpaceForPDUL(TBool aPDUIsClass0); |
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67 |
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68 protected: |
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69 void RunL(); |
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70 void DoCancel(); |
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71 |
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72 private: |
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73 enum TSmsMonitorDiskSpaceState |
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74 { |
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75 ESmsMonitorDiskSpaceIdle, |
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76 ESmsMonitorDiskSpaceMonitorLowLimit, |
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77 ESmsMonitorDiskSpaceMonitorHighLimit, |
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78 ESmsMonitorDiskSpaceResumeReception |
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79 }; |
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80 |
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81 CSmsMonitorDiskSpace(MSmsComm& aSmsComm, RMobileSmsMessaging& aSmsMessaging, RFs& aFs); |
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82 void ConstructL(); |
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83 |
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84 void NotifyDiskSpace(TInt aLimit, TSmsMonitorDiskSpaceState aState); |
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85 void ResumeSmsReception(); |
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86 TInt GetFreeDiskSpace(); |
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87 |
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88 TSmsMonitorDiskSpaceState iState; |
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89 RMobileSmsMessaging& iSmsMessaging; |
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90 RFs& iFs; |
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91 MSmsComm& iSmsComm; |
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92 TUint iLowLimit; |
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93 TUint iHighLimit; |
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94 TBool iNAckdClassZero; |
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95 TBool iNAckdClassOther; |
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96 |
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97 #ifdef _DEBUG |
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98 TBool iInOODTesting ; |
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99 RProperty iFreeDiskSpaceProperty; |
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100 #endif |
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101 |
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102 }; |
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103 |
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104 #endif // !defined __SMSPMONDSK_H__ |