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1 /* |
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2 * Copyright (c) 2007-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Find text box util |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include "TPbk2FindTextUtil.h" |
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22 #include <e32std.h> |
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23 #include <aknsfld.h> // CAknSearchField |
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24 |
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25 #ifdef _DEBUG |
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26 enum TPanicCode |
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27 { |
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28 EPanicLogic_FindTextBufferL |
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29 }; |
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30 |
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31 void Panic(TPanicCode aReason) |
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32 { |
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33 _LIT(KPanicText, "TPbk2FindTextUtil"); |
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34 User::Panic(KPanicText, aReason); |
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35 } |
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36 #endif // _DEBUG |
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37 |
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38 // ============================ MEMBER FUNCTIONS =============================== |
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39 |
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40 void TPbk2FindTextUtil::EnsureFindTextBufSizeL( |
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41 const CAknSearchField& aFindBox, |
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42 HBufC** aFindTextBuf ) |
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43 { |
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44 // Initial minimum size for the find text buffer |
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45 const TInt KInitialBufSize = 8; |
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46 |
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47 const TInt findBoxTextLength = aFindBox.TextLength(); |
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48 if (findBoxTextLength > 0) |
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49 { |
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50 TInt bufCapacity = 0; |
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51 if ( *aFindTextBuf ) |
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52 { |
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53 bufCapacity = (*aFindTextBuf)->Des().MaxLength(); |
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54 } |
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55 if (bufCapacity < findBoxTextLength) |
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56 { |
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57 // Allocate a new buffer of at least KInitialBufSize |
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58 // characters or twice as large as the previous one |
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59 const TInt KDoubleSize = 2; |
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60 const TInt newBufSize = Max(Max(KInitialBufSize, |
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61 KDoubleSize*bufCapacity), findBoxTextLength); |
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62 HBufC* newBuf = HBufC::NewL(newBufSize); |
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63 delete *aFindTextBuf; |
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64 *aFindTextBuf = newBuf; |
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65 } |
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66 TPtr bufPtr = (*aFindTextBuf)->Des(); |
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67 __ASSERT_DEBUG |
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68 (bufPtr.MaxLength()>=KInitialBufSize && |
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69 bufPtr.MaxLength()>=findBoxTextLength, |
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70 Panic(EPanicLogic_FindTextBufferL)); |
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71 } |
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72 |
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73 // caller expect buffer to be found |
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74 if ( !(*aFindTextBuf ) ) |
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75 { |
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76 *aFindTextBuf = HBufC::NewL( KInitialBufSize ); |
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77 } |
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78 |
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79 } |
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80 |
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81 |
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82 // End of File |