class CApaProcess : public CBase |
Maintains a list of documents and all of the potentially shared resources used by documents.
This includes the application DLLs. The class also supplies utility functions that provide the basic structure for persisted document files.
The class deals with the loading of application DLLs and manages the creation and destruction of application ( CApaApplication ) objects and document ( CApaDocument ) objects.
The class is derived from by the UI framework and further derivation by the UI application is not necessary unless it needs to add extra utility functions for the use of applications.
Protected Member Functions | |
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CApaProcess () | |
CApaProcess (const RFs &) | |
IMPORT_C void | CApaProcess_Reserved1 () |
IMPORT_C void | CApaProcess_Reserved2 () |
IMPORT_C void | ConstructL () |
IMPORT_C void | ConstructL ( TProcessId ) |
Private Member Functions | |
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RApaApplication * | AddAppL ( TApaApplicationFactory ) |
CApaDocument * | CreateDocL ( CApaApplication *) |
void | DeleteAllDocs () |
void | DoReadRootStreamL ( CStreamDictionary &, const CFileStore &) |
RApaApplication * | FindAppInListL (const TDesC &, TUid ) |
TInt | IdleRemoveApplications ( TAny *) |
void | MarkApplicationForAsyncRemoval (const CApaApplication *) |
void | RemoveApp (RApaApplication *) |
void | RemoveMarkedApplications () |
Private Attributes | |
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CArrayPtrFlat < RApaApplication > * | iAppList |
CIdle * | iAsyncAppRemover |
TInt | iCApaProcess_Reserved1 |
CArrayPtrFlat < CApaDocument > * | iDocList |
RFs | iFsSession |
CApaDocument * | iMainDoc |
HBufC * | iMainDocFileName |
CApaParentProcessMonitor * | iMonitor |
IMPORT_C | CApaProcess | ( | const RFs & | aFs | ) | [protected] |
Constructs the application process object with the specified file session handle.
Derived classes must define and implement a constructor through which the file session handle can be specified. A typical implementation calls this constructor through a constructor initialization list.
This constructor is used by the UI framework.
const RFs & aFs | Handle to a file server session |
IMPORT_C | ~CApaProcess | ( | ) |
Frees resources prior to destruction.
Documents must be saved before the application process is deleted, otherwise data may be lost.
In debug mode, the destructor raises an APPARC 6 panic if documents still exist, and an APPARC 5 panic if applications still exist.
RApaApplication * | AddAppL | ( | TApaApplicationFactory | aApplicationFactory | ) | [private] |
TApaApplicationFactory aApplicationFactory |
IMPORT_C CApaDocument * | AddNewDocumentL | ( | TApaApplicationFactory | aApplicationFactory | ) |
Creates and adds a new document using the specified application factory.
The document may be a main document or an embedded document.
Any document created with this function must be destroyed using DestroyDocument() .
TApaApplicationFactory aApplicationFactory | Should be created implicitly by passing a pointer to a factory function, an ECOM plugin UID, or a CImplementationInformation reference. |
IMPORT_C void | CApaProcess_Reserved1 | ( | ) | [protected, virtual] |
Reserved for future use
IMPORT_C void | CApaProcess_Reserved2 | ( | ) | [protected, virtual] |
Reserved for future use
IMPORT_C void | ConstructL | ( | ) | [protected] |
Completes construction of the application process object.
Implementers of derived classes must call this function as part of the second stage construction of an object. Typically, derived classes implement their own NewL() function and call ConstructL() as part of that implementation.
IMPORT_C void | ConstructL | ( | TProcessId | aParentProcessId | ) | [protected] |
Completes construction of the application process object, passing in a Parent Process Identifier.
Implementers of derived classes must call this function as part of the second stage construction of an object. Typically, derived classes implement their own NewL() function and call ConstructL() as part of that implementation.
TProcessId aParentProcessId | Id of the parent process. This process will terminate when the parent does. |
CApaDocument * | CreateDocL | ( | CApaApplication * | aApp | ) | [private] |
CApaApplication * aApp |
IMPORT_C void | DestroyDocument | ( | CApaDocument * | aDoc | ) |
Destroys the specified document.
All references to the document are removed, and associated resources are freed. Specifically, the function deletes any associated application and unloads the application DLL, provided that no other documents of that application type are still open.
All document objects created through CApaProcess must be deleted using this function.
CApaDocument * aDoc | A pointer to the document to be destroyed. |
void | DoReadRootStreamL | ( | CStreamDictionary & | aStreamDictionary, |
const CFileStore & | aStore | |||
) | [private, static] |
CStreamDictionary & aStreamDictionary | |
const CFileStore & aStore |
RApaApplication * | FindAppInListL | ( | const TDesC & | aAppFileName, |
TUid | aUid | |||
) | const [private] |
RFs & | FsSession | ( | ) | const [inline] |
Returns a handle to the file server session used by this application process.
TInt | IdleRemoveApplications | ( | TAny * | aApaProcess | ) | [private, static] |
TAny * aApaProcess |
IMPORT_C TPtrC | MainDocFileName | ( | ) | const |
Returns the filename of the main document.
CApaDocument * | MainDocument | ( | ) | const [inline] |
Returns a pointer to the main document.
void | MarkApplicationForAsyncRemoval | ( | const CApaApplication * | aApp | ) | [private] |
const CApaApplication * aApp |
IMPORT_C CApaProcess * | NewL | ( | const RFs & | aFs | ) | [static] |
Creates and returns a pointer to a new application process.
This function is not used by UI applications.
const RFs & aFs | Handle to a file server session. |
IMPORT_C CApaDocument * | OpenNewDocumentL | ( | CFileStore *& | aStore, |
CStreamDictionary *& | aStreamDic, | |||
const TDesC & | aDocFullFileName, | |||
TUint | aFileMode | |||
) |
Opens the specified file and restores the content as a document.
The created document can be merged into or embedded in another document.
Any document created with this function must be destroyed using DestroyDocument() .
CFileStore *& aStore | On return, this contains a pointer to the store object created during the restore. |
CStreamDictionary *& aStreamDic | On return, this contains a pointer to the stream dictionary object created during the restore. |
const TDesC & aDocFullFileName | The name of the file containing the document. |
TUint aFileMode | The mode in which to open the file. |
IMPORT_C TApaAppIdentifier | ReadAppIdentifierL | ( | const CStreamStore & | aStore, |
const CStreamDictionary & | aStreamDic | |||
) | [static] |
Reads the application identifier from its stream in the specified store and returns it.
The location of the stream is found in the specified stream dictionary.
const CStreamStore & aStore | The store from which the application identifier should be read. |
const CStreamDictionary & aStreamDic | The stream dictionary containing the stream ID of the application identifier stream. The stream dictionary can be found in the root stream of the store. |
IMPORT_C CStreamDictionary * | ReadRootStreamLC | ( | RFs & | aFs, |
CFileStore *& | aStore, | |||
const TDesC & | aDocFullFileName, | |||
TUint | aFileMode | |||
) | [static] |
Reads the stream dictionary contained as the root stream in the specified document file.
The function constructs, and returns a pointer to the stream dictionary object and puts the pointer to the stream dictionary object onto the cleanup stack. It also returns a pointer to the created file store object through an argument reference.
The file must be a valid document file; otherwise the function leaves with one of the system-wide error codes.
RFs & aFs | Handle to a file server session. |
CFileStore *& aStore | On return, a pointer to the newly created file store object. |
const TDesC & aDocFullFileName | The full path name of the document file. |
TUint aFileMode | The mode in which to open the file. |
IMPORT_C CStreamDictionary * | ReadRootStreamLC | ( | CFileStore *& | aStore, |
const RFile & | aFile | |||
) | [static] |
CFileStore *& aStore | |
const RFile & aFile |
void | RemoveApp | ( | RApaApplication * | aApp | ) | [private] |
RApaApplication * aApp |
IMPORT_C void | ResetL | ( | ) |
Resets the the application process to its initial state.
Specifically, it saves the main document, deletes the main and all embedded documents from memory, resets the main document filename and deletes all applications except the main application.
The function can leave if saving the main document fails.
IMPORT_C void | SetMainDocFileName | ( | const TDesC & | aMainDocFileName | ) |
Sets the filename of the main document.
const TDesC & aMainDocFileName | The filename to be set. |
IMPORT_C void | SetMainDocFileNameL | ( | const TDesC & | aMainDocFileName | ) |
Sets the filename of the main document.
const TDesC & aMainDocFileName | The filename to be set. There is no restriction on the length of this descriptor. |
IMPORT_C void | SetMainDocument | ( | CApaDocument * | aDocument | ) |
Sets the main document.
CApaProcess::AddNewDocumentL() CApaProcess::OpenNewDocumentL()
CApaDocument * aDocument | A pointer to the document to be set as the main document of the application process. This must be a an object created by the AddNewDocumentL() or OpenNewDocumentL() functions |
IMPORT_C void | WriteAppIdentifierL | ( | CStreamStore & | aStore, |
CStreamDictionary & | aStreamDic, | |||
const TApaAppIdentifier & | aAppId | |||
) | [static] |
Writes the application identifier to a new stream in the specified store and records the location of this stream in the specified stream dictionary.
CStreamStore & aStore | The store to which the application identifier should be written. |
CStreamDictionary & aStreamDic | The stream dictionary. |
const TApaAppIdentifier & aAppId | The application identifier to be externalised to a stream. |
IMPORT_C void | WriteRootStreamL | ( | CPersistentStore & | aStore, |
CStreamDictionary & | aStreamDic, | |||
const CApaApplication & | aApp | |||
) | [static] |
Writes the application identifier (derived from the application object CApaApplication ) followed by the stream dictionary to the store and makes the stream dictionary the root stream of the store.
Typically, the function is called by the application when it implements a file create or file save type operation. It is called after all model and UI data has been persisted. The IDs of the streams containing the model and UI data should have been lodged in the stream dictionary.
In effect, the function finishes off the file save or file create type operation, leaving the file containing the store in a valid state with the standard interface.
CPersistentStore & aStore | The store to which the root stream is to be written. Before calling this function, a reference to the store must be saved by putting a pointer onto the cleanup stack or by making it member data of a class. This ensures that it is not orphaned in the event of this function leaving. |
CStreamDictionary & aStreamDic | The stream dictionary containing the locations and associated UIDs of other streams in the store. |
const CApaApplication & aApp | The application used to create the main document in the file being written. The application identifier to be written is constructed from this application object. |
IMPORT_C void | WriteRootStreamL | ( | CPersistentStore & | aStore, |
CStreamDictionary & | aStreamDic, | |||
const TApaAppIdentifier & | aAppId | |||
) | [static] |
Writes the application identifier followed by the stream dictionary to the store and makes the stream dictionary the root stream of the store.
Typically, the function is called by the application when it implements a file create or file save type operation. It is called after all model and UI data has been persisted. The IDs of the streams containing the model and UI data should have been lodged in the stream dictionary.
In effect, the function finishes off the file save or file create type operation, leaving the file containing the store in a valid state with the standard interface.
CPersistentStore & aStore | The store to which the root stream is to be written. Before calling this function, a reference to the store must be saved by putting a pointer onto the cleanup stack or by making it member data of a class. This ensures that it is not orphaned in the event of this function leaving. |
CStreamDictionary & aStreamDic | The stream dictionary containing the locations and associated UIDs of other streams in the store. |
const TApaAppIdentifier & aAppId | The application identifier to be written into the application identifier stream. |
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