MCLFSortingStyle Class Reference

class MCLFSortingStyle
Sorting style for Content Listing Framework. This class can be used to define primary and secondary sorting styles for Content Listing Framework list model. Sorting styles are used to sort the list model. Secondary sorting style is used to sort items that could not be sorted by the primary sorting style. In other words, items that do not have the field defined by primary or any previous secondary sorting style, the items are sorted using the next secondary sorting style. When a secondary sorting style is appended, it becomes the least significant sorting style until a new one is added after it. Items with undefined fields are placed before or after items with defined fields, depending on the undefined field position setting in MCLFSortingStyle . Usage:
        // Create a sorting style instance
  MCLFSortingStyle* sortingStyle = ContentListingFactory::NewSortingStyleLC();

  // Set sort ordering
  sortingStyle->SetOrdering( ECLFOrderingDescending );

  // Set undefied item position. Undefined items are items that doesn't
  // have field that is defined in sorting style fields
  sortingStyle->SetUndefinedItemPosition( ECLFSortingStyleUndefinedEnd );

  // All sorting style parameter fields are string type
  sortingStyle->SetSortingDataType( ECLFItemDataTypeDesC );

  // Set default sorting parameter
  sortingStyle->AddFieldL( ECLFFieldIdSongName );

  // Set secondary sorting parameter
  sortingStyle->AddFieldL( ECLFFieldIdFileName );

  // If item doesn't have ECLFFieldIdSongName field then
  // ECLFFieldIdFileName field is used to sort item.
       
ContentListingFramework.lib
Since
S60 3.1

Constructor & Destructor Documentation

~MCLFSortingStyle()

~MCLFSortingStyle ( ) [inline, virtual]

Destructor.

Member Functions Documentation

AddFieldL(TCLFFieldId)

void AddFieldL ( TCLFFieldId aFieldId ) [pure virtual]
Add new field to the sorting style. First added field will be the default field. Remember to set type of field(s) with SetSortingDataType. Fields that are some other type will be ignored. See TCLFDefaultFieldId in CLFContentListing.hrh
Since
S60 3.1

Parameters

TCLFFieldId aFieldId Id of the sorting parameter field

Extension()

MCLFSortingStyleExt * Extension ( ) [private, inline, virtual]

GetFieldsL(RArray< TCLFFieldId > &)

void GetFieldsL ( RArray < TCLFFieldId > & aArray ) const [pure virtual]
Get IDs of fields that have been set to the sorting style.
Since
S60 3.1

Parameters

RArray < TCLFFieldId > & aArray Array of field IDs

Ordering()

TCLFSortingStyleOrdering Ordering ( ) const [pure virtual]
Get current sort ordering of the sorting style.
Since
S60 3.1

ResetL()

void ResetL ( ) [pure virtual]
Reset settings of the sorting style to default.
Since
S60 3.1

SetOrdering(TCLFSortingStyleOrdering)

void SetOrdering ( TCLFSortingStyleOrdering aOrdering ) [pure virtual]
Set sort ordering. Ordering can be ascending or descending. See TCLFSortingStyleOrdering
Since
S60 3.1

Parameters

TCLFSortingStyleOrdering aOrdering Sort ordering to be set

SetSortingDataType(TCLFItemDataType)

void SetSortingDataType ( TCLFItemDataType aDataType ) [pure virtual]
Set data type of sorting parameter fields. Data type can be text, time or number. See TCLFItemDataType
Since
S60 3.1

Parameters

TCLFItemDataType aDataType Data type to be set

SetUndefinedItemPosition(TCLFUndefinedItemPosition)

void SetUndefinedItemPosition ( TCLFUndefinedItemPosition aUndefinedItemPosition ) [pure virtual]
Set undefined item position. Items not having information for defined sorting parameter fields are placed to top or bottom of the model. See TCLFUndefinedItemPosition
Since
S60 3.1

Parameters

TCLFUndefinedItemPosition aUndefinedItemPosition Position for undefiened items

SortingDataType()

TCLFItemDataType SortingDataType ( ) const [pure virtual]
Get current sorting data type of fields.
Since
S60 3.1

UndefinedItemPosition()

TCLFUndefinedItemPosition UndefinedItemPosition ( ) const [pure virtual]
Get current position of undefined items.
Since
S60 3.1