CAknSingleStyleTreeList Class Reference

Link against: aknhlist.lib

#include <aknsinglestyletreelist.h>

Detailed Description

Single style hierarchical list.

Single style hierarchical list is a hierarchical list specialisation for a list type with simple list items, which contain only a folder or file icon, single line of text and some optional icons. This class provides only the specialisation specific APIs for the list usage. The common hierarchical list APIs are located in its base class.

Here is an example of how an instance of window-owning single style hierarchical list can be constructed:

  // Construct the list, set its size, and make it visible.
  CAknSingleStyleTreeList* list = CAknSingleStyleTreeList::NewL();
  list->SetRect( rect );
  list->MakeVisible( ETrue );

Adding items to the constructed list:

  // Add a node to the top-most level of the tree.
  _LIT( KNodeText, "Node" );
  TUint32 flags = CAknSingleStyleTreeList::EPersistent;
  TAknTreeItemID node = list->AddNodeL( KAknTreeIIDRoot, KNodeText,
      flags, EFalse );

  // Add a leaf to the previously added node.
  _LIT( KLeafText, "Leaf" );
  TAknTreeItemID leaf = list->AddLeafL( node, KLeafText, flags, EFalse );

Changing icons for the list items:

  // Add icon to the list and set it to existing list item.
  TInt iconId = list->AddIconL( KAknsIIDQgnPropBtCarkit,
      AknIconUtils::AvkonIconFileName(), EMbmAvkonQgn_prop_bt_carkit,
      EMbmAvkonQgn_prop_bt_carkit_mask, EAspectRatioPreserved );
  list->SetIcon( leaf, CAknSingleStyleTreeList::ELeaf, iconId, ETrue );

See also:: CAknTreeList

Dll aknhlist.lib

Since:: S60 v3.2


Public Types
enum	TIconType { ELeaf = 0, EHighlightedLeaf = 1, EExpandedNode = 2, EHighlightedExpandedNode = 3, ECollapsedNode = 4, EHighlightedCollapsedNode = 5, EOptionalIcon1 = 6, EHighlightedOptionalIcon1 = 7, EOptionalIcon2 = 8, EHighlightedOptionalIcon2 = 9 }
	Icon types usable with single style hierarchical list. More...
enum	TOrdering { EAscendingAlphabeticalOrdering, EDescendingAlphabeticalOrdering }
	Single style hierarchical list ordering types. More...
enum	TSingleStyleItemFlags { EPersistent = 0x01, EMarked = 0x02, EExpanded = 0x04, ENonEmpty = 0x08 }
	Flags usable with single style tree items. More...
Public Member Functions
virtual	~CAknSingleStyleTreeList ()
	Destructor.
IMPORT_C TAknTreeItemID	AddLeafL (TAknTreeItemID aParent, const TDesC &aText, TUint32 aFlags, TBool aDrawNow)
	Adds new leaf (file) to single style hierarchical list.
IMPORT_C TAknTreeItemID	AddNodeL (TAknTreeItemID aParent, const TDesC &aText, TUint32 aFlags, TBool aDrawNow)
	Adds new node (folder) to single style hierarchical list.
IMPORT_C void	SortL (TOrdering aOrdering, TBool aDrawNow)
	Sorts the hierarchical list according to the given ordering.
IMPORT_C void	SetTextL (TAknTreeItemID aItem, const TDesC &aText, TBool aDrawNow)
	Changes the text of the specified item.
IMPORT_C const TDesC &	Text (TAknTreeItemID aItem) const
	Returns the text field of the specified item.
IMPORT_C void	SetIcon (TAknTreeItemID aItem, TIconType aType, TInt aIconId, TBool aDrawNow)
	Sets an icon for a list item.
IMPORT_C TInt	Icon (TAknTreeItemID aItem, TIconType aType) const
	Returns the icon ID set for the specified icon of a list item.
void	SetFlags (TUint32 aFlags)
	From CAknTreeList.
Static Public Member Functions
static IMPORT_C CAknSingleStyleTreeList *	NewL ()
	Two phased constructor.
static IMPORT_C CAknSingleStyleTreeList *	NewL (const CCoeControl &aContainer)
	Two phased constructor.
static IMPORT_C CAknSingleStyleTreeList *	NewLC ()
	Otherwise identical to `NewL()`, but leaves the newly created object in the cleanup stack.
static IMPORT_C CAknSingleStyleTreeList *	NewLC (const CCoeControl &aContainer)
	Otherwise identical to `NewL( const CCoeControl& )`, but leaves the newly created object in the cleanup stack.

Member Enumeration Documentation

enum CAknSingleStyleTreeList::TIconType

Icon types usable with single style hierarchical list.

Normal icons are used when the list item is not focused, and highlighted icons are used when list item is focused. Normal icons are used also when list item is focused, if corresponding highlighted icon is not specified for the list item.

Enumerator:

ELeaf	Leaf icon. Only usable with tree leaves.
EHighlightedLeaf	Highlighted leaf icon. Only usable with tree leaves.
EExpandedNode	Expanded node icon. Only usable with tree nodes.
EHighlightedExpandedNode	Highlighted expanded node icon. Only usable with tree nodes.
ECollapsedNode	Collapsed node icon. Only usable with tree nodes.
EHighlightedCollapsedNode	Highlighted collapsed node icon. Only usable with tree nodes.
EOptionalIcon1	First optional icon.
EHighlightedOptionalIcon1	First highlighted optional icon.
EOptionalIcon2	Second optional icon.
EHighlightedOptionalIcon2	Second highlighted optional icon.

enum CAknSingleStyleTreeList::TOrdering

Single style hierarchical list ordering types.

Enumerator:

EAscendingAlphabeticalOrdering	Ascending alphabetical ordering based on item text fields.
EDescendingAlphabeticalOrdering	Descending alphabetical ordering based on item text fields.

enum CAknSingleStyleTreeList::TSingleStyleItemFlags

Flags usable with single style tree items.

Enumerator:

EPersistent	Item is persistent.
EMarked	Item is marked.
EExpanded	Item is expanded. Applicable to nodes only.
ENonEmpty	Item appears non-empty. Applicable to nodes only.

Constructor & Destructor Documentation

virtual CAknSingleStyleTreeList::~CAknSingleStyleTreeList ( ) [virtual]

Destructor.

Member Function Documentation

IMPORT_C TAknTreeItemID CAknSingleStyleTreeList::AddLeafL	(	TAknTreeItemID	aParent,
		const TDesC &	aText,
		TUint32	aFlags,
		TBool	aDrawNow
	)

Adds new leaf (file) to single style hierarchical list.

New leaf with the specified content is created and added to the specified parent node. Constant KAknTreeIIDRoot can be used, if the new item is to be added to the top-most level of the hierarchical list.

Parameters:

	aParent	The item ID of the parent node.
	aText	Text for the added item.
	aFlags	Flags for the added item.
	aDrawNow	`ETrue`, if the list is to be redrawn after the item has been added to the list, otherwise `EFalse`.

Returns:: The item ID for the added leaf.

Leave:: KErrNoMemory Not enough memory.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

Panic:: EAknHListPanicInvalidItemType Specified parent item is not a node.

IMPORT_C TAknTreeItemID CAknSingleStyleTreeList::AddNodeL	(	TAknTreeItemID	aParent,
		const TDesC &	aText,
		TUint32	aFlags,
		TBool	aDrawNow
	)

Adds new node (folder) to single style hierarchical list.

New node with the specified content is created and added to the specified parent node. Constant KAknTreeIIDRoot can be used, if the new item is to be added to the top-most level of the hierarchical list.

Parameters:

	aParent	The item ID of the parent node.
	aText	Text for the added node.
	aFlags	Flags for the added node.
	aDrawNow	`ETrue` to redraw the list after the node has been added, otherwise `EFalse`.

Returns:: The Item ID for the added node.

Leave:: KErrNoMemory Not enough memory.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

Panic:: EAknHListPanicInvalidItemType Specified parent item is not a node.

IMPORT_C TInt CAknSingleStyleTreeList::Icon	(	TAknTreeItemID	aItem,
		TIconType	aType
	)	const

Returns the icon ID set for the specified icon of a list item.

Parameters:

	aItem	Item ID of a list item.
	aType	Type defining the specific icon within list item.

Returns:: Icon ID. The value AknTreeListIconID::KDefault is returned, if no icon has been set. Value KErrNotFound is returned, if the item does not contain icon of specified type.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

static IMPORT_C CAknSingleStyleTreeList* CAknSingleStyleTreeList::NewL ( const CCoeControl & aContainer ) [static]

Two phased constructor.

Creates a new single style hierarchical list instance as non-window-owning component control to the compound control given as parameter.

Parameters:

aContainer

The compound control used as container for the list.

Returns:: Newly constructed object.

Leave:: KErrNoMemory Not enough memory.

static IMPORT_C CAknSingleStyleTreeList* CAknSingleStyleTreeList::NewL ( ) [static]

Two phased constructor.

Creates a new single style hierarchical list instance as window-owning control.

Returns:: Newly constructed object.

Leave:: KErrNoMemory Not enough memory.

static IMPORT_C CAknSingleStyleTreeList* CAknSingleStyleTreeList::NewLC ( const CCoeControl & aContainer ) [static]

Otherwise identical to NewL( const CCoeControl& ), but leaves the newly created object in the cleanup stack.

Two phased constructor.

Creates a new single style hierarchical list instance as non-window-owning component control to the compound control given as parameter.

Parameters:

aContainer

The compound control used as container for the list.

Returns:: Newly constructed object.

Leave:: KErrNoMemory Not enough memory.

Postcondition:: Newly constructed object is left in cleanup stack.

static IMPORT_C CAknSingleStyleTreeList* CAknSingleStyleTreeList::NewLC ( ) [static]

Otherwise identical to NewL(), but leaves the newly created object in the cleanup stack.

Two phased constructor.

Creates a new single style hierarchical list instance as window-owning control.

Returns:: Newly constructed object.

Leave:: KErrNoMemory Not enough memory.

Postcondition:: Newly constructed object is left in cleanup stack.

void CAknSingleStyleTreeList::SetFlags ( TUint32 aFlags ) [virtual]

From CAknTreeList.

Sets the flags for the single style hierarchical list.

Parameters:

aFlags

Flags.

Reimplemented from CAknTreeList.

IMPORT_C void CAknSingleStyleTreeList::SetIcon	(	TAknTreeItemID	aItem,
		TIconType	aType,
		TInt	aIconId,
		TBool	aDrawNow
	)

Sets an icon for a list item.

Every list item may have several icons, so the correct icon has to be specified with the icon type. Note that the type has to be applicable to the specified list item. Pre-defined icon IDs can be found within AknTreeListIconID namespace. Constant AknTreeListIconID::KDefault can be used to indicate that default icon is to be used, and constant AknTreeListIconID::KNone to indicate that no icon is to be used.

Parameters:

	aItem	Item ID of the modified list item.
	aType	The type of the icon to be added.
	aIconId	Icon ID. Icon ID is the integer value returned by the `AddIconL()` method when the icon was added to the list.
	aDrawNow	`ETrue` to redraw the list after the icon has been changed, othewise `EFalse`.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

Panic:: EAknHListPanicInvalidItemType Specified icon is not applicable with the item type.

IMPORT_C void CAknSingleStyleTreeList::SetTextL	(	TAknTreeItemID	aItem,
		const TDesC &	aText,
		TBool	aDrawNow
	)

Changes the text of the specified item.

Note that the change of text might also affect the item's position in the list, when the items are ordered based on their text fields.

Parameters:

	aItem	Item ID of modified item.
	aText	New text for the item.
	aDrawNow	`ETrue` if the list is to be redrawn after the text has been changed.

Leave:: KErrNoMemory Not enough memory for adding text.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

Panic:: EAknHListPanicInvalidItemType Specified item has invalid type.

IMPORT_C void CAknSingleStyleTreeList::SortL	(	TOrdering	aOrdering,
		TBool	aDrawNow
	)

Sorts the hierarchical list according to the given ordering.

Parameters:

	aOrdering	Type of ordering.
	aDrawNow	`ETrue` to redraw the list after it has been sorted according the new ordering, otherwise `EFalse`.

Leave:: KErrNoMemory Not enough memory.

IMPORT_C const TDesC& CAknSingleStyleTreeList::Text

(

TAknTreeItemID

aItem

)

const

Returns the text field of the specified item.

Parameters:

aItem

Item ID.

Returns:: Text of the specified item.

Panic:: EAknHListPanicInvalidItemID Item with specified ID is not found.

The documentation for this class was generated from the following file:

aknsinglestyletreelist.h

CAknSingleStyleTreeList Class Reference

Detailed Description

Public Types

Public Member Functions

Static Public Member Functions

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation