/*

* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

/**

 @file

 @publishedPartner

 @released

*/

#ifndef __MANAGER_H__

#define __MANAGER_H__

#include <e32base.h>

#include <f32file.h>

#include <caf/caftypes.h>

#include <caf/agent.h>

class CDir;

namespace ContentAccess

	{

	class CAgentResolver;

	class CRightsManager;

	class RAttributeSet;

	class RStringAttributeSet;

	class CDirStreamable;

	class CAgentManager;

	class TVirtualPathPtr;

	/** 

	Manages files and content access agents

	@publishedPartner

	@released

	*/

	class CManager : public CBase

		{

	public:

		/** Creates a CManager 

		@return A CManager object

		*/

		IMPORT_C static CManager* NewL();

		/** Creates a CManager 

		@return A CManager object

		*/

		IMPORT_C static CManager* NewLC();

		/** destructor 

		*/

		virtual ~CManager();

		/** 

		Delete a file on the device

		The agent who manages the file will be used to delete it.

		In the case of a DRM agent implementation it may delete rights that 

		were associated with the file at the same time. If an agent deletes 

		rights at the same time as the content it will display a confirmation 

		dialog that makes it clear that the rights will be also deleted. 

		Access to the agent private directories is permitted at the 

		agents discretion.

		@param aFileName The full pathname of the file to delete.

		@return The outcome of the delete operation.

		@return KErrNone if the file was deleted successfully.

		@return KErrCancel if the user selects cancel in an agent supplied confirmation screen.

		@return KErrAccessDenied if the agent does not allow the file to be deleted.

		@return KErrCANotSupported if the agent does not support file deletion

		@return KErrPermissionDenied if the client does not have the necessary capabilities to delete the file.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Deleting DRM protected content is not permitted for processes without DRM capability. 

		*/

		IMPORT_C TInt DeleteFile(const TDesC &aFileName) const;

		/**

		Make a copy of a file (eg to removable media) 

		Access to the agents private directory is permitted at the 

		agents discretion.

  		@param aSource The full pathname of the source file.

		@param aDestination The full pathname of the destination file.

		@return The outcome of the copy operation.

		@return KErrNone if the file was copied successfully.

		@return KErrAccessDenied if the agent does not allow the file to be copied.

		@return KErrCANotSupported if the agent does not support file copying.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to copy the file.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

  		@capability DRM Copying DRM protected files is not permitted for processes without DRM capability. Copying unprotected files is permitted

		*/

		IMPORT_C TInt CopyFile(const TDesC& aSource, const TDesC& aDestination) const;

		/**

		Make a copy of a file (eg to removable media) using a file handle

		Access to the agents private directory is permitted at the 

		agents discretion.

  		@param aSourceFile The handle the source file.

		@param aDestination The full pathname of the destination file.

		@return The outcome of the copy operation.

		@return KErrNone if the file was copied successfully.

		@return KErrAccessDenied if the agent does not allow the file to be copied.

		@return KErrCANotSupported if the agent does not support file copying.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to copy the file.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

  		@capability DRM Copying DRM protected files is not permitted for processes without DRM capability. Copying unprotected files is permitted

		*/

		IMPORT_C TInt CopyFile(RFile& aSourceFile, const TDesC &aDestination) const;

		/**

		Rename or move the content file (eg to removable media)

		Access to the agent private directories is permitted at the 

		agents discretion.

		@param aSource The full pathname of the source file.

		@param aDestination The full pathname of the destination file.

		@return The outcome of the Rename operation.

		@return KErrNone if the file was moved or renamed successfully.

		@return KErrAccessDenied if the agent does not allow the file to be moved or renamed.

		@return KErrCANotSupported if the agent does not support file renaming.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to move or rename the file.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

  		@capability DRM Moving DRM protected files is not permitted for processes without DRM capability. Moving unprotected files is permitted

		*/

		IMPORT_C TInt RenameFile(const TDesC& aSource, const TDesC& aDestination) const;

		/** Create a directory

		This function can be used to create a directory within in the agent's 

		private directory. Access to the agents private directory is permitted at the 

		agents discretion. 

		@param aPath The full pathname of the directory to create.

		@return The outcome of the MkDir operation.

		@return KErrNone if the directory was created successfully.

		@return KErrAccessDenied if the agent does not allow the directory to be created.

		@return KErrCANotSupported if the agent does not support directory creation.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to create directories.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory.

		*/

		IMPORT_C TInt MkDir(const TDesC& aPath) const;

		/** Create all directories in the given path if they do not exist

		This function can be used to create directories within in the agent's 

		private directory. Access to the agents private directory is permitted at the 

		agents discretion. 

		@param aPath The full pathname of the directory to create.

		@return The outcome of the MkDirAll operation.

		@return KErrNone if the directory was created successfully.

		@return KErrAccessDenied if the agent does not allow the directory to be created.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to create directories.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory.

		*/

		IMPORT_C TInt MkDirAll(const TDesC& aPath) const;

		/** Remove a directory

		This function can be used to remove a directory from within the agent's 

		private directory. Access to the agents private directory is permitted 

		at the agents discretion. 

		@param aPath The full pathname of the directory to remove.

		@return The outcome of the RmDir operation.

		@return KErrNone if the directory was removed successfully.

		@return KErrAccessDenied if the agent does not allow the directory to be removed.

		@return KErrCANotSupported if the agent does not support directory removal.

		@return KErrPermissionDenied if the client does not have the necessary capabilities to remove directories.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory

		*/

		IMPORT_C TInt RmDir(const TDesC& aPath) const;

		/** Rename a directory

		This function can be used to rename a directory from within the agent's 

		private directory. Access to the agents private directory is permitted 

		at the agents discretion. 

		@param aOldName The existing pathname of the directory to rename.

		@param aNewName The new pathname of the directory.

		@return The outcome of the RenameDir operation.

		@return KErrNone if the directory was removed successfully.

		@return KErrAccessDenied f the agent does not allow the directory to be removed.

		@return KErrCANotSupported if the agent does not support directory removal.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@return Otherwise one of the other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory		

		*/

		IMPORT_C TInt RenameDir(const TDesC& aOldName, const TDesC& aNewName) const;

		/**  Gets a filtered list of a directory's contents. 

		The bitmask determines which file and directory entry types should be listed. The sort key determines the order in which they are listed.

		Notes:

		-# If sorting by UID (as indicated when the ESortByUid bit is OR'ed with the sort key), then UID information will be included in the listing whether or not KEntryAttAllowUid is specified in aEntryAttMask.

		-# The function sets aFileList to NULL, and then allocates memory for it before appending entries to the list. Therefore, aFileList should have no memory allocated to it before this function is called, otherwise this memory will become orphaned.

		-# The caller of this function is responsible for deleting aFileList after the function has returned.

		Access to agent private directories is permitted at 

		the agents discretion. 

		@see TEntryKey

  		@param aName The name of the directory for which a listing is required. Wildcards may be used to specify particular files.

		@param aEntryAttMask Bitmask indicating the attributes of interest. Only files and directories whose attributes match those specified here can be included in the listing. For more information, see KEntryAttMatchMask and the other directory entry details. Also see KEntryAttNormal and the other file or directory attributes 

		@param aEntrySortKey The sort key. This is a set of flags indicating the order in which the entries are to be sorted. These flags are defined by TEntryKey. 

		@param aEntryList On return contains a filtered list of directory and file entries.

		@return The outcome of the GetDir operation.

		@return KErrNone if the directory contents were listed successfully.

		@return KErrCANotSupported if the agent does not allow clients to view its private directory.

		@return KErrPermissionDenied if the process does not have the correct capabilities to view the directory.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory

		*/

		IMPORT_C TInt GetDir(const TDesC& aName, TUint aEntryAttMask, TUint aEntrySortKey, CDir*& aEntryList) const;

		/**  Gets a filtered list of the directory and file entries contained in a directory and a list of the directory entries only

		The bitmask determines which file and directory entry types should be listed in aFileList. The contents of the second list, aDirList are not affected by the bitmask; it returns all directory entries contained in directory aName. The sort key determines the order in which both lists are sorted.

		Notes:

		-# If sorting by UID (as indicated when the ESortByUid bit is OR'ed with the sort key), then UID information will be included in the listing whether or not KEntryAttAllowUid is specified in aEntryAttMask.

		-# The function sets both aFileList and aDirList to NULL, and then allocates memory to them before appending entries to the lists. Therefore, aFileList and aDirList should have no memory allocated to them before this function is called, otherwise the allocated memory will become orphaned.

		-# The caller of this function is responsible for deleting aFileList and aDirList after the function has returned.

		Access to agent private directories is permitted at 

		the agents discretion. 

		@see TEntryKey

		@param aName The name of the directory for which a listing is required. Wildcards may be used to specify particular files. 

		@param aEntryAttMask Bitmask indicating the attributes of interest. Only files and directories whose attributes match those specified here can be included in aFileList. aDirList is unaffected by this mask. For more information, see KEntryAttMatchMask and the other directory entry details. Also see KEntryAttNormal and the other file or directory attributes.

		@param aEntrySortKey The sort key. This is a set of flags indicating the order in which the entries in both lists are to be sorted. These flags are defined by TEntryKey. 

		@param aEntryList On return contains a filtered list of directory and file entries. 

		@param aDirList On return contains a filtered list of directory entries only.

		@return The outcome of the GetDir operation.

		@return KErrNone The directory contents were listed successfully.

		@return KErrCANotSupported The agent does not allow clients to view its private directory.

		@return KErrPermissionDenied If the process does not have the correct capabilities to view the directory.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory.

		*/

		IMPORT_C TInt GetDir(const TDesC& aName, TUint aEntryAttMask, TUint aEntrySortKey, CDir*& aEntryList, CDir*& aDirList) const;

		/**  Gets a filtered list of a directory's contents by UID

		The aUidType parameter determines which file entry types should be listed. The sort key determines the order in which they are listed.

		Notes:

		-# The function sets aFileList to NULL, and then allocates memory for it before appending entries to the list. Therefore, aFileList should have no memory allocated to it before this function is called, otherwise this memory will become orphaned.

		-# The caller of this function is responsible for deleting aFileList after the function has returned.

		Access to agent private directories is permitted at 

		the agents discretion. 

		@see TEntryKey

		@param aName The name of the directory for which a listing is required. Wildcards may be used to specify particular files. 

		@param aEntryUid Only those files whose UIDs match those specified within this UID type will be included in the file list. Any, or all, of the three UIDs within the UID type may be omitted. Any UID which is omitted acts in a similar manner to a wildcard character, matching to all UIDs. 

		@param aEntrySortKey The sort key. This is a set of flags indicating the order in which the entries are to be sorted. These flags are defined by TEntryKey.

		@param aFileList On return contains a filtered list of directory and file entries.

		@return The outcome of the GetDir operation.

		@return KErrNone The directory contents were listed successfully.

		@return KErrCANotSupported The agent does not allow clients to view its private directory.

		@return KErrPermissionDenied If the process does not have the correct capabilities to view the directory.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Required when attempting to access an agents private directory.

		*/

		IMPORT_C TInt GetDir(const TDesC& aName, const TUidType& aEntryUid, TUint aEntrySortKey, CDir*& aFileList) const;

		/**  Get an attribute from a content object

		@see ContentAccess::TAttribute

		e.g.

		@code

		TInt value = 0;

		CManager* manager = CManager::NewL();

		err = manager->GetAttribute(EIsProtected, value, aVirtualPath);

		if(err == KErrNone && value)

			{

			DisplayPadLock();

			}

		@endcode

		@param aAttribute The attribute to retrieve, from ContentAccess::TAttribute.

		@param aValue Used to return the value of the attribute.

		@param aVirtualPath The content object whose attributes are to be queried.

		@return Whether the attribute value was updated.

		@return KErrNone if the attribute value was updated.

		@return KErrNotFound if the URI or the object with the given UniqueId inside the file was not found.

		@return KErrCANotSupported if the requested attribute is not supported for this content object.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Access to DRM protected content is not permitted for processes without DRM capability. Access to unprotected content is unrestricted. 

		*/

		IMPORT_C TInt GetAttribute(TInt aAttribute, TInt& aValue, const TVirtualPathPtr& aVirtualPath) const;

		/**  Get a content's attribute from a file specified by file handle. Can be used when the source file is in the client's private directory.

		@param aAttribute The attribute to retrieve, from ContentAccess::TAttribute.

		@param aValue Used to return the value of the attribute.

		@param aFile The file handle for the file containing the content object.

		@param aUniqueId The unique id of the content object.

		@return Whether the attribute value was updated.

		@return KErrNone if the attribute value was updated.

		@return KErrNotFound if the URI or the object with the given UniqueId inside the file was not found.

		@return KErrCANotSupported if the feature or the requested attribute is not supported for this content object.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Access to DRM protected content is not permitted for processes without DRM capability. Access to unprotected content is unrestricted. 

		*/

		IMPORT_C TInt GetAttribute(TInt aAttribute, TInt& aValue, RFile& aFile, const TDesC& aUniqueId);

		/** Get a set of attributes from a content object

		@see ContentAccess::TAttribute

		The following example determines whether the content object is protected

		and has rights that will enable it to be viewed by the user

		@code

		TInt err = KErrNone;

		TInt value = 0;

		// The manager		

		CManager* manager = CManager::NewLC();

		// Prepare the RAttributeSet object with the attributes to query		

		RAttributeSet attributeSet;

		CleanupClosePushL(attributeSet);

		attributeSet.AddL(EProtected);

		attributeSet.AddL(ECanView);

		// Retrieve the attributes from the agent

		User::LeaveIfError(manager->GetAttributeSet(attributeSet, aVirtualPath));

		// Check if the content object is protected

		err =attributeSet.GetValue(EProtected, value);

		if(err == KErrNone && value)

			{

			// content object is DRM protected

			}

		// Check if the content object can be display on screen

		err = attributeSet.GetValue(ECanView, value);

		if(err == KErrNone && value)

			{

			// content object is DRM protected

			}

  		// Can reuse the RAttributeSet if necessary

		User::LeaveIfError(manager->GetAttributeSet(attributeSet, aVirtualPath));

		...

		// Finished

		CleanupStack::PopAndDestroy(2);		// manager, attributeSet.Close()

		@endcode

		@param aAttributeSet The set of attributes to query and update.

		@param aVirtualPath The content object to retrieve attributes from.

		@return Whether the attribute set was updated.

		@return KErrNone if the attribute set was updated successfully.

		@return KErrNotFound if the content object was not found.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Access to DRM protected content is not permitted for processes without DRM capability. Access to unprotected content is unrestricted. 

		*/

		IMPORT_C TInt GetAttributeSet(RAttributeSet& aAttributeSet, const TVirtualPathPtr& aVirtualPath) const;

		/** Get a content's set of attributes from a file specified by file handle. Can be used when the source file is in the client's private directory.

		@param aAttributeSet The set of attributes to query and update.

		@param aFile The file handle for the file containing the content object.

		@param aUniqueId The unique id of the content object.

		@return Whether the attribute set was updated.

		@return KErrNone if the attribute set was updated successfully.

		@return KErrNotFound if the content object was not found.

		@return KErrCANotSupported if the feature not supported.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Access to DRM protected content is not permitted for processes without DRM capability. Access to unprotected content is unrestricted. 

		*/

		IMPORT_C TInt GetAttributeSet(RAttributeSet& aAttributeSet, RFile& aFile, const TDesC& aUniqueId);	

		/**  Get text string attributes or meta-data from the file 

		@see ContentAccess::TStringAttribute

		e.g.

		@code

		CManager* manager = CManager::NewLC();

		TBuf <MAX_PATH> previewUri;

		if(manager->GetStringAttribute(EPreviewURI, previewUri, uri) == KErrNone)

			{

			DisplayPreview(previewUri);

			}

		CleanupStack::PopAndDestroy();	// manager

		@endcode

		@param aAttribute The attribute to retrieve, from ContentAccess::TStringAttribute.

		@param aValue Used to return the value of the attribute.

		@param aVirtualPath The content object whose attributes are to be retrieved.

		@return Whether the value was updated.

		@return KErrNone if the attribute was retrieved successfully.

		@return KErrNotFound if the content object does not exist.

		@return KErrCANotSupported if the requested attribute does not apply to this content object.

		@return KErrOverflow if the buffer was not large enough to return the result.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		*/

		IMPORT_C TInt GetStringAttribute(TInt aAttribute, TDes& aValue, const TVirtualPathPtr& aVirtualPath) const;

		/**  Get a content's text string attribute from a file specified by file handle. Can be used when the source file is in the client's private directory.

		@param aAttribute The attribute to retrieve, from ContentAccess::TAttribute.

		@param aValue Used to return the value of the attribute.

		@param aFile The file handle for the file containing the content object.

		@param aUniqueId The unique id of the content object whose attributes are to be retrieved.

		@return Whether the attribute value was updated.

		@return KErrNone if the attribute value was updated.

		@return KErrNotFound if the content object does not exist.

		@return KErrCANotSupported if the feature or the requested attribute is not supported for this content object.

		@return KErrOverflow if the buffer was not large enough to return the result.

		@return Otherwise one of the other CAF error codes defined in \c caferr.h  or one of the 

				other system-wide error codes for any other errors.

		@capability DRM Access to DRM protected content is not permitted for processes without DRM capability. Access to unprotected content is unrestricted. 

		*/		

		IMPORT_C TInt GetStringAttribute(TInt aAttribute, TDes& aValue, RFile& aFile, const TDesC& aUniqueId);

		/** Used to obtain a set of string attributes 

		@see ContentAccess::TStringAttribute

		@code

		TInt err = KErrNone;

		TInt value = 0;

		CManager* manager = CManager::NewLC();

		// Prepare the RStringAttributeSet object with the attributes to query		

		RStringAttributeSet stringAttributeSet;

		CleanupClosePushL(stringAttributeSet);

		stringAttributeSet.AddL(EPreviewURI);

		// Retrieve the attributes from the agent