web_pub/browser_control_api/inc/BrCtlSpecialLoadObserver.h
changeset 0 dd21522fd290
child 36 0ed94ceaa377
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web_pub/browser_control_api/inc/BrCtlSpecialLoadObserver.h	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,145 @@
+/*
+* Copyright (c) 2006 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:  Handle special load events such as network connection, deal with non-http or non-html requests
+*
+*/
+
+
+#ifndef BRCTLSPECIALLOADOBSERVER_H
+#define BRCTLSPECIALLOADOBSERVER_H
+
+//  INCLUDES
+#include <e32std.h>
+#include <e32base.h>
+#include <apmstd.h> 
+#include <ApEngineConsts.h>
+#include <badesca.h>
+
+// CONSTANTS
+
+// MACROS
+
+// DATA TYPES
+enum TBrCtlDownloadParam
+    {
+    EParamRequestUrl, ///< URL requested
+    EParamRealm, ///< Realm (if www)
+    EParamUsername, ///< User name (if www authentication)
+    EParamPassword, ///< Password (if www authentication)
+    EParamProxyRealm, ///< Realm in the case of proxy authentication
+    EParamProxyUsername, ///< User name (if proxy authentication)
+    EParamProxyPassword, ///< Password (if proxy authentication)
+    EParamRawRequestHeader, ///< Request header in the form: Header:Value
+    EParamReceivedContentType, ///< Type of content received
+    EParamExpectedContentType, ///< Type of content expected to appear in the markup <object> tag.
+    EParamTotalContentLength, ///< Expected length of the content
+    EParamReceivedContentLength, ///< Length of the content already received
+    EParamReceivedContent, ///< Body of the content received
+    EParamRawResponseHeader, ///< Response header in the form: Header: Value
+    EParamLocalFileName, ///< Name of the file containing the content to be downloaded
+    EParamCharset, ///< Character set of the content to be downloaded
+    EParamRefererHeader, ///< Referrer header used in the download request, if applicable
+    EParamTransactionId ///< Transaction ID 
+    };
+
+// FUNCTION PROTOTYPES
+
+
+/**
+* The MBrCtlSpecialLoadObserver class handles special load events, such as 
+* network connection, non-HTTP(S) load requests, and non-HTML responses.
+*
+* Usage:
+*
+* @code
+*  #include <BrCtlSpecialLoadObserver.h>
+*
+*  
+* @see S60 Platform: Browser Control API Developer's Guide Version 2.0
+* @lib BrowserEngine.lib
+* @file BrCtlSpecialLoadObserver.h
+* @endcode     *
+*/
+class MBrCtlSpecialLoadObserver
+    {
+    public: // New functions
+        /**
+        * Request to create a network connection.
+        * @since 2.8
+        * @param aConnectionPtr Pointer to the network connection. It must 
+        * be type casted to an integer. If NULL, the Proxy Filter creates 
+        * a network connection automatically. It must be type casted to an integer.
+        * @param aSockSvrHandle A handle to the socket server.
+        * @param aNewConn A flag if a new connection was created. If the 
+        * connection is not new, proxy filter optimization will not read 
+        * the proxy again from CommsBd.
+        * ETrue if a new connection was created.
+        * EFalse if a previously created connection was used.
+        * @param aBearerType Bearer type of the new connection. For example, GPRS, WCDMA.
+        * TapBearerType is defined in ApEngineConsts.h.
+        * @return void
+        * @attention This function is called for every HTTP request for which 
+        * the content was not found in the cache. This function is called 
+        * whether or not a connection was established in a previous request. 
+        * The host application determines whether to create a new connection 
+        * or to use an existing connection. 
+        */
+        virtual void NetworkConnectionNeededL(TInt* aConnectionPtr,
+                                              TInt* aSockSvrHandle,
+                                              TBool* aNewConn,
+                                              TApBearerType* aBearerType) = 0;
+
+        /**
+        * Requests the host application to handle non-HTTP requests. It is expected that the 
+        * host application will call the Scheme Dispatcher to handle these requests.
+        * @since 2.8
+        * @param aTypeArray Array of request parameters. Examples: URL, referrer header
+        * @param aDesArray Array of values corresponding to the types in aTypeArray
+        * @return ETrue if the host application handles the scheme.
+        * EFalse if the host application cannot handle the scheme.
+        * @attention The browser checks the scheme to determine whether or 
+        * not it is supported. The browser supports the following schemes:
+        * File scheme, HTTP scheme or HTTPS scheme
+        * If the URL contains a scheme that the browser does not 
+        * support, such as RTSP, then the host application should pass the 
+        * content to an application that can handle that scheme. 
+        */
+        virtual TBool HandleRequestL(RArray<TUint>* aTypeArray, CDesCArrayFlat* aDesArray) = 0;
+
+        /**
+        * Request the host applicaion to handle downloads
+        * @since 2.8
+        * @param aTypeArray array of download parameter types
+        * @param aDesArray array of values associated with the types in the type array
+        * @return ETrue if handled by the host application
+        * EFalse if not handled by the host application
+        * @attention The host application should call the Download Manager to 
+        * handle non-HTML content. 
+        * Only GET requests are supported because the Browser Control must 
+        * cancel the transaction before the Download Manager can take over. 
+        * If a POST request is cancelled, the server may enter an unpredictable state.
+        * For POST requests, the Browser Control downloads the content before calling 
+        * this function. It stores the content in a file whose name is passed to the 
+        * host application by using the EParamLocalFileName parameter. The host 
+        * application should check whether this parameter was passed by the 
+        * Browser Control to determine whether the Browser Control already downloaded 
+        * the content. If not, the host application should download the content.
+        */
+        virtual TBool HandleDownloadL(RArray<TUint>* aTypeArray, CDesCArrayFlat* aDesArray) = 0;
+
+    };
+
+#endif      // BRCTLSPECIALLOADOBSERVER_H
+            
+// End of File