locationtriggering/ltcontextsourceplugin/src/lbttriggernode.cpp
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     1 /*
       
     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  Class used to set & get the trigger attributes
       
    15 *
       
    16 */
       
    17 
       
    18 #include "lbttriggernode.h"
       
    19 #include "lbtcontextsourceplugindebug.h"
       
    20 
       
    21 
       
    22 // ---------------------------------------------------------------------------
       
    23 // TTriggerNode::SetTriggerNameL
       
    24 // ---------------------------------------------------------------------------
       
    25 //
       
    26 void TTriggerNode::SetTriggerNameL( const TPtrC& aTriggerName )
       
    27     {
       
    28     // Check that the name is not NULL,if Yes then 
       
    29     // leave with KErrArgument
       
    30     if( aTriggerName == KNullDesC )
       
    31         {
       
    32         User::Leave( KErrArgument );
       
    33         }
       
    34     
       
    35     // Check that the length of the name is <= 256,if not then
       
    36     // extract only upto 256 characters before setting
       
    37     if( aTriggerName.Length() > KMaxNameLength )
       
    38         {
       
    39         iTriggerName.Set( aTriggerName.Mid( 0,KMaxNameLength ) );
       
    40         }
       
    41     else
       
    42         {
       
    43         iTriggerName.Set( aTriggerName );
       
    44         }
       
    45     }
       
    46 
       
    47 // ---------------------------------------------------------------------------
       
    48 // TTriggerNode::SetLatitudeL
       
    49 // ---------------------------------------------------------------------------
       
    50 //
       
    51 void TTriggerNode::SetLatitudeL( const TPtrC& aLatitude )
       
    52     {
       
    53     LBTCONTEXTSOURCEPLUGINDEBUG ( "TTriggerNode::SetLatitudeL - IN" );
       
    54     // Check that the value is not NULL
       
    55     if( aLatitude == KNullDesC )
       
    56         {
       
    57         // set value to NaN & leave with KErrArgument
       
    58         TRealX nan;
       
    59         nan.SetNaN();
       
    60         iLatitude = nan;
       
    61         User::Leave( KErrArgument );
       
    62         }
       
    63     
       
    64     // Convert the string to TReal64
       
    65     // holds the parsed number in text form
       
    66     TBuf<KRealWidth> parsedLatitude;
       
    67     TLex lexer( aLatitude );
       
    68     User::LeaveIfError( lexer.Val( iLatitude,KRealPoint ) );
       
    69     // Format the real number to round off to 6 decimal digits
       
    70     // initialize the TRealFormat variable 
       
    71     TRealFormat realFormat;
       
    72     realFormat.iPoint = KRealPoint;
       
    73     realFormat.iType = KRealFormatFixed | KDoNotUseTriads;
       
    74     realFormat.iPlaces = KCoordinateDecimalPlaces;
       
    75     realFormat.iWidth = KRealWidth;
       
    76     User::LeaveIfError( parsedLatitude.Num( iLatitude,realFormat ) );
       
    77     // convert the formattted string back to TReal64
       
    78     TLex lex( parsedLatitude );
       
    79     User::LeaveIfError( lex.Val( iLatitude,KRealPoint ) );
       
    80     
       
    81     // Check the range of the latitude value,if not within range
       
    82     // leave with KErrArgument
       
    83     if ( !( iLatitude >= KMinLatitude && iLatitude <= KMaxLatitude ) )
       
    84         {
       
    85         User::Leave( KErrArgument );
       
    86         }
       
    87     LBTCONTEXTSOURCEPLUGINDEBUG ( "TTriggerNode::SetLatitudeL - OUT" );
       
    88     }
       
    89 
       
    90 // ---------------------------------------------------------------------------
       
    91 // TTriggerNode::SetLongitudeL
       
    92 // ---------------------------------------------------------------------------
       
    93 //
       
    94 void TTriggerNode::SetLongitudeL( const TPtrC& aLongitude )
       
    95     {
       
    96     // Check that the value is not NULL
       
    97     if( aLongitude == KNullDesC )
       
    98         {
       
    99         // set value to NaN & leave with KErrArgument
       
   100         TRealX nan;
       
   101         nan.SetNaN();
       
   102         iLatitude = nan;
       
   103         User::Leave( KErrArgument );
       
   104         }
       
   105     
       
   106     // Convert the string to TReal64
       
   107     // holds the parsed number in text form
       
   108     TBuf<KRealWidth> parsedLongitude;
       
   109     TLex lexer( aLongitude );
       
   110     User::LeaveIfError( lexer.Val( iLongitude,KRealPoint ) );
       
   111     // Format the real number to round off to 6 decimal digits
       
   112     // initialize the TRealFormat variable 
       
   113     TRealFormat realFormat;
       
   114     realFormat.iPoint = KRealPoint;
       
   115     realFormat.iType = KRealFormatFixed | KDoNotUseTriads;
       
   116     realFormat.iPlaces = KCoordinateDecimalPlaces;
       
   117     realFormat.iWidth = KRealWidth;
       
   118     User::LeaveIfError( parsedLongitude.Num( iLongitude,realFormat ) );
       
   119     // convert the formattted string back to TReal64
       
   120     TLex lex( parsedLongitude );
       
   121     User::LeaveIfError( lex.Val( iLongitude,KRealPoint ) );
       
   122     
       
   123     // Check the range of the latitude value,if not within range
       
   124     // leave with KErrArgument
       
   125     if ( !( iLongitude >= KMinLongitude && iLongitude <= KMaxLongitude ) )
       
   126         {
       
   127         User::Leave( KErrArgument );
       
   128         }
       
   129     }
       
   130 
       
   131 // ---------------------------------------------------------------------------
       
   132 // TTriggerNode::SetRegionL
       
   133 // ---------------------------------------------------------------------------
       
   134 //
       
   135 void TTriggerNode::SetRegionL( const TPtrC& aRegion )
       
   136     {
       
   137     // Check that the value is not NULL
       
   138     if( aRegion == KNullDesC )
       
   139         {
       
   140         User::Leave( KErrArgument );
       
   141         }
       
   142     // check that the region specified is a circle,since it is the 
       
   143     // only permissible value else leave with KErrArgument
       
   144     // Convert the value read from file to lower case inorder to compare
       
   145     // the values
       
   146     TInt length = aRegion.Length();
       
   147     HBufC * buffer = HBufC::NewL( length );
       
   148     CleanupStack::PushL( buffer );
       
   149     TPtr ptr = buffer->Des();
       
   150     ptr.Copy( aRegion );
       
   151     ptr.LowerCase();
       
   152 
       
   153     if ( ! ( ptr.CompareC( KRegionValue ) ) )
       
   154         {
       
   155         iRegion.Set( aRegion );
       
   156         }
       
   157     else
       
   158         {
       
   159         User::Leave( KErrArgument );
       
   160         }
       
   161     CleanupStack::PopAndDestroy( buffer );
       
   162     }
       
   163 
       
   164 // ---------------------------------------------------------------------------
       
   165 // TTriggerNode::SetRadiusL
       
   166 // ---------------------------------------------------------------------------
       
   167 //
       
   168 void TTriggerNode::SetRadiusL( const TPtrC& aRadius )
       
   169     {
       
   170     // Check that the value is not NULL
       
   171     if( aRadius == KNullDesC )
       
   172         {
       
   173         // set value to NaN & leave with KErrArgument
       
   174         TRealX nan;
       
   175         nan.SetNaN();
       
   176         iRadius = nan;
       
   177         User::Leave( KErrArgument );
       
   178         }
       
   179 
       
   180     // Check the radius value,
       
   181     // Minimum radius must be 100 meters
       
   182     TLex lex( aRadius );
       
   183     TReal radiusValue = 0;
       
   184     User::LeaveIfError( lex.Val( radiusValue ) );
       
   185     
       
   186     // Check that the radius value is positive else leave with KErrArgument
       
   187     if( radiusValue < 0 )
       
   188         {
       
   189         User::Leave( KErrArgument );
       
   190         }
       
   191     
       
   192     if ( radiusValue < KMinRadius )
       
   193         {
       
   194         iRadius = KMinRadius;
       
   195         }
       
   196     else
       
   197         {
       
   198         iRadius = radiusValue;
       
   199         }
       
   200     }
       
   201 
       
   202 // ---------------------------------------------------------------------------
       
   203 // TTriggerNode::SetDirection
       
   204 // ---------------------------------------------------------------------------
       
   205 //
       
   206 void TTriggerNode::SetDirectionL( const TPtrC& aDirection )
       
   207     {
       
   208     // If the value is null,then set default value to 
       
   209     // CLbtTriggerConditionArea::EFireOnEnter
       
   210     if( aDirection == KNullDesC )
       
   211         {
       
   212         iDirection = CLbtTriggerConditionArea::EFireOnEnter;
       
   213         }
       
   214     
       
   215     // Compare the value set in the file with the permissible values
       
   216     // If it doesnt match ,then set the default value
       
   217     // Convert the value read to lower case to compare the strings
       
   218     TInt length = aDirection.Length();
       
   219     HBufC * buffer = HBufC::NewL( length );
       
   220     TPtr ptr = buffer->Des();
       
   221     ptr.Copy( aDirection );
       
   222     ptr.LowerCase();
       
   223 
       
   224     if( !( ptr.CompareC( KDirectionValueOnEntry ) ) )
       
   225         {
       
   226         iDirection = CLbtTriggerConditionArea::EFireOnEnter;
       
   227         }
       
   228     else if( !( ptr.CompareC( KDirectionValueOnExit ) ) )
       
   229         {
       
   230         iDirection = CLbtTriggerConditionArea::EFireOnExit;
       
   231         }
       
   232     else
       
   233         {
       
   234         iDirection = CLbtTriggerConditionArea::EFireOnEnter;
       
   235         }
       
   236     
       
   237     delete buffer;
       
   238     }
       
   239 
       
   240 // ---------------------------------------------------------------------------
       
   241 // TTriggerNode::SetContextSource
       
   242 // ---------------------------------------------------------------------------
       
   243 //
       
   244 void TTriggerNode::SetContextSource( const TPtrC& aSetName )
       
   245     {
       
   246     // If the value is null,then set default context source value to "Location"
       
   247     if( aSetName == KNullDesC )
       
   248         {
       
   249         iSetName.Set( KDefaultContextSourceName );
       
   250         }
       
   251     
       
   252     // Check that the length of the name is <= 256,if not then
       
   253     // extract only upto 256 characters before setting
       
   254     if( aSetName.Length() > KMaxNameLength )
       
   255         {
       
   256         iSetName.Set( aSetName.Mid( 0,KMaxNameLength ) );
       
   257         }
       
   258     else
       
   259         {
       
   260         iSetName.Set(aSetName);
       
   261         }
       
   262     }
       
   263 
       
   264 // ---------------------------------------------------------------------------
       
   265 // TTriggerNode::SetCurrentState
       
   266 // ---------------------------------------------------------------------------
       
   267 //
       
   268 void TTriggerNode::SetCurrentStateL( const TPtrC& aCurrentState )
       
   269     {
       
   270     // If the value is null,then set default value to 
       
   271     // CLbtTriggerEntry::EStateEnabled
       
   272     if( aCurrentState == KNullDesC )
       
   273         {
       
   274         iCurrentState = CLbtTriggerEntry::EStateEnabled;
       
   275         }
       
   276     
       
   277     // Compare the value set in the file with the permissible values
       
   278     // If it doesnt match ,then set the default value
       
   279     // Convert the value read to lower case to compare the strings
       
   280     TInt length = aCurrentState.Length();
       
   281     HBufC * buffer = HBufC::NewL( length );
       
   282     TPtr ptr = buffer->Des();
       
   283     ptr.Copy( aCurrentState );
       
   284     ptr.LowerCase();
       
   285 
       
   286     if( !( ptr.CompareC( KCurrentStateOn ) ) )
       
   287         {
       
   288         iCurrentState = CLbtTriggerEntry::EStateEnabled;
       
   289         }
       
   290     else if( !( ptr.CompareC( KCurrentStateOff ) ) )
       
   291         {
       
   292         iCurrentState = CLbtTriggerEntry::EStateDisabled;
       
   293         }
       
   294     else
       
   295         {
       
   296         iCurrentState = CLbtTriggerEntry::EStateEnabled;
       
   297         }
       
   298     
       
   299     delete buffer;
       
   300     }
       
   301 
       
   302 // ---------------------------------------------------------------------------
       
   303 // TTriggerNode::GetTriggerName
       
   304 // ---------------------------------------------------------------------------
       
   305 //
       
   306 TInt TTriggerNode::GetTriggerName( TPtrC& aTriggerName )
       
   307     {
       
   308     if ( iTriggerName == KNullDesC )
       
   309         {
       
   310         return KErrNotFound;
       
   311         }
       
   312 
       
   313     aTriggerName.Set( iTriggerName );
       
   314     return KErrNone;
       
   315     }
       
   316 
       
   317 // ---------------------------------------------------------------------------
       
   318 // TTriggerNode::GetLatitude
       
   319 // ---------------------------------------------------------------------------
       
   320 //
       
   321 TInt TTriggerNode::GetLatitude( TReal& aLatitude )
       
   322     {
       
   323     if ( Math::IsNaN( iLatitude ) ) 
       
   324         {
       
   325         return KErrNotFound;
       
   326         }
       
   327 
       
   328     aLatitude = iLatitude;
       
   329     return KErrNone;
       
   330     }
       
   331 
       
   332 // ---------------------------------------------------------------------------
       
   333 // TTriggerNode::GetLongitude
       
   334 // ---------------------------------------------------------------------------
       
   335 //
       
   336 TInt TTriggerNode::GetLongitude( TReal& aLongitude )
       
   337     {
       
   338     if ( Math::IsNaN( iLongitude ) ) 
       
   339         {
       
   340         return KErrNotFound;
       
   341         }
       
   342 
       
   343     aLongitude = iLongitude;
       
   344     return KErrNone;
       
   345     }
       
   346 
       
   347 // ---------------------------------------------------------------------------
       
   348 // TTriggerNode::GetDirection
       
   349 // ---------------------------------------------------------------------------
       
   350 //
       
   351 CLbtTriggerConditionArea::TDirection TTriggerNode::GetDirection()
       
   352     {
       
   353     return iDirection;
       
   354     }
       
   355 
       
   356 
       
   357 
       
   358 // ---------------------------------------------------------------------------
       
   359 // TTriggerNode::GetRegion
       
   360 // ---------------------------------------------------------------------------
       
   361 //
       
   362 TInt TTriggerNode::GetRegion( TPtrC& aRegion )
       
   363     {
       
   364     if ( iRegion == KNullDesC )
       
   365         {
       
   366         return KErrNotFound;
       
   367         }
       
   368 
       
   369     aRegion.Set( iRegion );
       
   370     return KErrNone;
       
   371     }
       
   372 
       
   373 // ---------------------------------------------------------------------------
       
   374 // TTriggerNode::GetRadius
       
   375 // ---------------------------------------------------------------------------
       
   376 //
       
   377 TInt TTriggerNode::GetRadius( TReal& aRadius )
       
   378     {
       
   379     if ( Math::IsNaN( iRadius ) ) 
       
   380         {
       
   381         return KErrNotFound;
       
   382         }
       
   383 
       
   384     aRadius = iRadius;
       
   385     return KErrNone;
       
   386     }
       
   387 
       
   388 // ---------------------------------------------------------------------------
       
   389 // TTriggerNode::GetContextSource
       
   390 // ---------------------------------------------------------------------------
       
   391 //
       
   392 TPtrC& TTriggerNode::GetContextSource()
       
   393     {
       
   394     return iSetName;
       
   395     }
       
   396 
       
   397 // ---------------------------------------------------------------------------
       
   398 // TTriggerNode::GetCurrentState
       
   399 // ---------------------------------------------------------------------------
       
   400 //
       
   401 CLbtTriggerEntry::TLbtTriggerState TTriggerNode::GetCurrentState()
       
   402     {
       
   403     return iCurrentState;
       
   404     }
       
   405