2 * XPath query result node list implementation (TODO: XSLPattern support)
4 * Copyright 2005 Mike McCormack
5 * Copyright 2007 Mikolaj Zalewski
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
33 #include "msxml_private.h"
35 #include "wine/debug.h"
37 /* This file implements the object returned by a XPath query. Note that this is
38 * not the IXMLDOMNodeList returned by childNodes - it's implemented in nodelist.c.
39 * They are different because the list returned by XPath queries:
40 * - is static - gives the results for the XML tree as it existed during the
41 * execution of the query
42 * - supports IXMLDOMSelection (TODO)
44 * TODO: XSLPattern support
47 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
51 #include <libxml/xpath.h>
53 static const struct IXMLDOMNodeListVtbl queryresult_vtbl;
55 typedef struct _queryresult
57 const struct IXMLDOMNodeListVtbl *lpVtbl;
60 xmlXPathObjectPtr result;
64 static inline queryresult *impl_from_IXMLDOMNodeList( IXMLDOMNodeList *iface )
66 return (queryresult *)((char*)iface - FIELD_OFFSET(queryresult, lpVtbl));
69 HRESULT queryresult_create(xmlNodePtr node, LPWSTR szQuery, IXMLDOMNodeList **out)
71 queryresult *This = CoTaskMemAlloc(sizeof(queryresult));
72 xmlXPathContextPtr ctxt = xmlXPathNewContext(node->doc);
73 xmlChar *str = xmlChar_from_wchar(szQuery);
77 TRACE("(%p, %s, %p)\n", node, wine_dbgstr_w(szQuery), out);
80 if (This == NULL || ctxt == NULL || str == NULL)
86 This->lpVtbl = &queryresult_vtbl;
90 xmldoc_add_ref(This->node->doc);
93 This->result = xmlXPathEval(str, ctxt);
94 if (!This->result || This->result->type != XPATH_NODESET)
100 *out = (IXMLDOMNodeList *)This;
102 TRACE("found %d matches\n", This->result->nodesetval->nodeNr);
105 if (This != NULL && FAILED(hr))
106 IXMLDOMNodeList_Release( (IXMLDOMNodeList*) &This->lpVtbl );
108 xmlXPathFreeContext(ctxt);
109 HeapFree(GetProcessHeap(), 0, str);
114 static HRESULT WINAPI queryresult_QueryInterface(
115 IXMLDOMNodeList *iface,
119 TRACE("%p %s %p\n", iface, debugstr_guid(riid), ppvObject);
121 if ( IsEqualGUID( riid, &IID_IUnknown ) ||
122 IsEqualGUID( riid, &IID_IDispatch ) ||
123 IsEqualGUID( riid, &IID_IXMLDOMNodeList ) )
129 FIXME("interface %s not implemented\n", debugstr_guid(riid));
131 return E_NOINTERFACE;
134 IXMLDOMNodeList_AddRef( iface );
139 static ULONG WINAPI queryresult_AddRef(
140 IXMLDOMNodeList *iface )
142 queryresult *This = impl_from_IXMLDOMNodeList( iface );
143 return InterlockedIncrement( &This->ref );
146 static ULONG WINAPI queryresult_Release(
147 IXMLDOMNodeList *iface )
149 queryresult *This = impl_from_IXMLDOMNodeList( iface );
152 ref = InterlockedDecrement(&This->ref);
155 xmlXPathFreeObject(This->result);
156 xmldoc_release(This->node->doc);
163 static HRESULT WINAPI queryresult_GetTypeInfoCount(
164 IXMLDOMNodeList *iface,
171 static HRESULT WINAPI queryresult_GetTypeInfo(
172 IXMLDOMNodeList *iface,
175 ITypeInfo** ppTInfo )
181 static HRESULT WINAPI queryresult_GetIDsOfNames(
182 IXMLDOMNodeList *iface,
193 static HRESULT WINAPI queryresult_Invoke(
194 IXMLDOMNodeList *iface,
199 DISPPARAMS* pDispParams,
201 EXCEPINFO* pExcepInfo,
208 static HRESULT WINAPI queryresult_get_item(
209 IXMLDOMNodeList* iface,
211 IXMLDOMNode** listItem)
213 queryresult *This = impl_from_IXMLDOMNodeList( iface );
215 TRACE("%p %ld\n", This, index);
219 if (index < 0 || index >= This->result->nodesetval->nodeNr)
222 *listItem = create_node(This->result->nodesetval->nodeTab[index]);
223 This->resultPos = index + 1;
228 static HRESULT WINAPI queryresult_get_length(
229 IXMLDOMNodeList* iface,
232 queryresult *This = impl_from_IXMLDOMNodeList( iface );
236 *listLength = This->result->nodesetval->nodeNr;
240 static HRESULT WINAPI queryresult_nextNode(
241 IXMLDOMNodeList* iface,
242 IXMLDOMNode** nextItem)
244 queryresult *This = impl_from_IXMLDOMNodeList( iface );
246 TRACE("%p %p\n", This, nextItem );
250 if (This->resultPos >= This->result->nodesetval->nodeNr)
253 *nextItem = create_node(This->result->nodesetval->nodeTab[This->resultPos]);
258 static HRESULT WINAPI queryresult_reset(
259 IXMLDOMNodeList* iface)
261 queryresult *This = impl_from_IXMLDOMNodeList( iface );
268 static HRESULT WINAPI queryresult__newEnum(
269 IXMLDOMNodeList* iface,
277 static const struct IXMLDOMNodeListVtbl queryresult_vtbl =
279 queryresult_QueryInterface,
282 queryresult_GetTypeInfoCount,
283 queryresult_GetTypeInfo,
284 queryresult_GetIDsOfNames,
286 queryresult_get_item,
287 queryresult_get_length,
288 queryresult_nextNode,
290 queryresult__newEnum,