Sweden-Number/dlls/msxml3/nodelist.c

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/*
* Node list implementation
*
* Copyright 2005 Mike McCormack
*
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* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
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* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include "config.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "ole2.h"
#include "msxml2.h"
#include "msxml_private.h"
#include "wine/debug.h"
/* This file implements the object returned by childNodes property. Note that this is
* not the IXMLDOMNodeList returned by XPath querites - it's implemented in queryresult.c.
* They are different because the list returned by childNodes:
* - is "live" - changes to the XML tree are automatically reflected in the list
* - doesn't supports IXMLDOMSelection
* - note that an attribute node have a text child in DOM but not in the XPath data model
* thus the child is inaccessible by an XPath query
*/
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WINE_DEFAULT_DEBUG_CHANNEL(msxml);
#ifdef HAVE_LIBXML2
typedef struct _xmlnodelist
{
const struct IXMLDOMNodeListVtbl *lpVtbl;
LONG ref;
xmlNodePtr parent;
xmlNodePtr current;
} xmlnodelist;
static inline xmlnodelist *impl_from_IXMLDOMNodeList( IXMLDOMNodeList *iface )
{
return (xmlnodelist *)((char*)iface - FIELD_OFFSET(xmlnodelist, lpVtbl));
}
static HRESULT WINAPI xmlnodelist_QueryInterface(
IXMLDOMNodeList *iface,
REFIID riid,
void** ppvObject )
{
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TRACE("%p %s %p\n", iface, debugstr_guid(riid), ppvObject);
if(!ppvObject)
return E_INVALIDARG;
if ( IsEqualGUID( riid, &IID_IUnknown ) ||
IsEqualGUID( riid, &IID_IDispatch ) ||
IsEqualGUID( riid, &IID_IXMLDOMNodeList ) )
{
*ppvObject = iface;
}
else
{
FIXME("interface %s not implemented\n", debugstr_guid(riid));
*ppvObject = NULL;
return E_NOINTERFACE;
}
IXMLDOMNodeList_AddRef( iface );
return S_OK;
}
static ULONG WINAPI xmlnodelist_AddRef(
IXMLDOMNodeList *iface )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
return InterlockedIncrement( &This->ref );
}
static ULONG WINAPI xmlnodelist_Release(
IXMLDOMNodeList *iface )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
ULONG ref;
ref = InterlockedDecrement( &This->ref );
if ( ref == 0 )
{
xmldoc_release( This->parent->doc );
heap_free( This );
}
return ref;
}
static HRESULT WINAPI xmlnodelist_GetTypeInfoCount(
IXMLDOMNodeList *iface,
UINT* pctinfo )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
TRACE("(%p)->(%p)\n", This, pctinfo);
*pctinfo = 1;
return S_OK;
}
static HRESULT WINAPI xmlnodelist_GetTypeInfo(
IXMLDOMNodeList *iface,
UINT iTInfo,
LCID lcid,
ITypeInfo** ppTInfo )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
HRESULT hr;
TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
hr = get_typeinfo(IXMLDOMNodeList_tid, ppTInfo);
return hr;
}
static HRESULT WINAPI xmlnodelist_GetIDsOfNames(
IXMLDOMNodeList *iface,
REFIID riid,
LPOLESTR* rgszNames,
UINT cNames,
LCID lcid,
DISPID* rgDispId )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
ITypeInfo *typeinfo;
HRESULT hr;
TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
lcid, rgDispId);
if(!rgszNames || cNames == 0 || !rgDispId)
return E_INVALIDARG;
hr = get_typeinfo(IXMLDOMNodeList_tid, &typeinfo);
if(SUCCEEDED(hr))
{
hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
ITypeInfo_Release(typeinfo);
}
return hr;
}
static HRESULT WINAPI xmlnodelist_Invoke(
IXMLDOMNodeList *iface,
DISPID dispIdMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS* pDispParams,
VARIANT* pVarResult,
EXCEPINFO* pExcepInfo,
UINT* puArgErr )
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
ITypeInfo *typeinfo;
HRESULT hr;
TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
hr = get_typeinfo(IXMLDOMNodeList_tid, &typeinfo);
if(SUCCEEDED(hr))
{
hr = ITypeInfo_Invoke(typeinfo, &(This->lpVtbl), dispIdMember, wFlags, pDispParams,
pVarResult, pExcepInfo, puArgErr);
ITypeInfo_Release(typeinfo);
}
return hr;
}
static HRESULT WINAPI xmlnodelist_get_item(
IXMLDOMNodeList* iface,
LONG index,
IXMLDOMNode** listItem)
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
xmlNodePtr curr;
LONG nodeIndex = 0;
TRACE("%p %d\n", This, index);
if(!listItem)
return E_INVALIDARG;
*listItem = NULL;
if (index < 0)
return S_FALSE;
curr = This->parent->children;
while(curr)
{
if(nodeIndex++ == index) break;
curr = curr->next;
}
if(!curr) return S_FALSE;
*listItem = create_node( curr );
return S_OK;
}
static HRESULT WINAPI xmlnodelist_get_length(
IXMLDOMNodeList* iface,
LONG* listLength)
{
xmlNodePtr curr;
LONG nodeCount = 0;
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
TRACE("%p\n", This);
if(!listLength)
return E_INVALIDARG;
curr = This->parent->children;
while (curr)
{
nodeCount++;
curr = curr->next;
}
*listLength = nodeCount;
return S_OK;
}
static HRESULT WINAPI xmlnodelist_nextNode(
IXMLDOMNodeList* iface,
IXMLDOMNode** nextItem)
{
xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
TRACE("%p %p\n", This, nextItem );
if(!nextItem)
return E_INVALIDARG;
*nextItem = NULL;
if (!This->current)
return S_FALSE;
*nextItem = create_node( This->current );
This->current = This->current->next;
return S_OK;
}
static HRESULT WINAPI xmlnodelist_reset(
IXMLDOMNodeList* iface)
{
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xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
TRACE("%p\n", This);
This->current = This->parent->children;
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return S_OK;
}
static HRESULT WINAPI xmlnodelist__newEnum(
IXMLDOMNodeList* iface,
IUnknown** ppUnk)
{
FIXME("\n");
return E_NOTIMPL;
}
static const struct IXMLDOMNodeListVtbl xmlnodelist_vtbl =
{
xmlnodelist_QueryInterface,
xmlnodelist_AddRef,
xmlnodelist_Release,
xmlnodelist_GetTypeInfoCount,
xmlnodelist_GetTypeInfo,
xmlnodelist_GetIDsOfNames,
xmlnodelist_Invoke,
xmlnodelist_get_item,
xmlnodelist_get_length,
xmlnodelist_nextNode,
xmlnodelist_reset,
xmlnodelist__newEnum,
};
IXMLDOMNodeList* create_children_nodelist( xmlNodePtr node )
{
xmlnodelist *nodelist;
nodelist = heap_alloc( sizeof *nodelist );
if ( !nodelist )
return NULL;
nodelist->lpVtbl = &xmlnodelist_vtbl;
nodelist->ref = 1;
nodelist->parent = node;
nodelist->current = node->children;
xmldoc_add_ref( node->doc );
return (IXMLDOMNodeList*) &nodelist->lpVtbl;
}
#endif