/*
* Copyright (c) 2003 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: Handles table elements in XHTML documents.
*
*/
#ifndef CXHTMLTABLEELEMENTHANDLER__H
#define CXHTMLTABLEELEMENTHANDLER__H
// INCLUDES
#include <e32def.h>
#include <e32base.h>
#include "nwx_defs.h"
#include <nw_dom_node.h>
// CONSTANTS
// MACROS
// DATA TYPES
// FUNCTION PROTOTYPES
// FORWARD DECLARATIONS
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef struct NW_XHTML_ContentHandler_s NW_XHTML_ContentHandler_t;
typedef struct NW_XHTML_ElementHandler_s NW_XHTML_ElementHandler_t;
typedef struct NW_LMgr_Box_s NW_LMgr_Box_t;
typedef struct NW_LMgr_RootBox_s NW_LMgr_RootBox_t;
typedef struct NW_LMgr_ContainerBox_s NW_LMgr_ContainerBox_t;
#ifdef __cplusplus
}
#endif /* __cplusplus */
// CLASS DECLARATION
// TODO: This class should be derived from CElementHandler once the browser is
// converted to c++.
class CXHTMLTableElementHandler : public CBase
{
public: // Constructors and destructor
/**
* Two-phased constructor.
*/
static CXHTMLTableElementHandler* NewL(const NW_XHTML_ElementHandler_t* aElementHandler,
NW_XHTML_ContentHandler_t* aContentHandler, NW_DOM_ElementNode_t* aElementNode);
/**
* Destructor.
*/
virtual ~CXHTMLTableElementHandler();
public: // New Methods
/**
* Initializes the ElementHandler.
*
* @return status code
*/
virtual TBrowserStatusCode Initialize(void);
/**
* Creates the box-tree associated with the tag.
*
* @param aParentBox the parent to attach the new box-tree to.
* @return status code
*/
virtual TBrowserStatusCode CreateBoxTree(NW_LMgr_ContainerBox_t& aParentBox);
/**
* Returns whether or not grid mode applies to this table.
*
* @return ETrue or EFalse.
*/
TBool DoesGridModeApply(void);
private: // Private Methods
/**
* C++ default constructor.
*/
CXHTMLTableElementHandler(const NW_XHTML_ElementHandler_t* aElementHandler,
NW_XHTML_ContentHandler_t* aContentHandler, NW_DOM_ElementNode_t* aElementNode);
/**
* By default Symbian 2nd phase constructor is private.
*/
void ConstructL(void);
/**
* A simple helper method to create the box-tree.
*
* @param aElementNode the table's element node.
* @param aTableBox the table's box.
* @param aTableContainerParent the table's parent's box.
*
* @return status code
*/
TBrowserStatusCode CreateSubTree(NW_DOM_ElementNode_t* aElementNode,
NW_LMgr_Box_t* aTableBox, NW_LMgr_ContainerBox_t* aTableContainerParent);
/**
* A simple helper method to create the box-tree.
*
* @param aElementHandler the table's element handler.
* @param aElementNode the table's element node.
* @param aTableBox the table's box.
* @param aTableContainerParent the table's parent's box.
*
* @return status code
*/
TBrowserStatusCode CreateSubTreeHelper(const NW_XHTML_ElementHandler_t* aElementHandler,
NW_DOM_ElementNode_t* aElementNode, NW_LMgr_Box_t* aTableBox,
NW_LMgr_ContainerBox_t* aTableContainerParent);
/**
* Returns true if the parent has only one element, ignoring text nodes that
* only contain whitespace.
*
* @return true or false.
*/
NW_Bool HasOnlyOneElementChild(NW_DOM_Node_t* aParentNode);
/**
* This method is called each time a table chunk arrives. It is used
* to determine whether or not that table should be laid out in grid mode.
*
* @return status code
*/
TBrowserStatusCode PreEvalTable();
/**
* This method is called after all of the chunks of a table arrive. It is used
* to determine whether or not that table should be laid out in grid mode.
*
* @return status code
*/
TBrowserStatusCode PostEvalTable();
private: // Data
const NW_XHTML_ElementHandler_t* iElementHandler;
NW_XHTML_ContentHandler_t* iContentHandler;
NW_DOM_ElementNode_t* iElementNode;
NW_LMgr_RootBox_t* iRootBox;
NW_Float32 iScreenWidth;
TInt8 iIsGridMode;
NW_DOM_Node_t* iLastEvaluatedElement;
TInt32 iNumberOfElements;
};
#endif // CXHTMLTABLEELEMENTHANDLER__H