dlls/msxml3/nodelist.c

   1 /*
   2  *    Node list implementation
   3  *
   4  * Copyright 2005 Mike McCormack
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29 #include "ole2.h"
  30 #include "msxml2.h"
  31
  32 #include "msxml_private.h"
  33
  34 #include "wine/debug.h"
  35
  36 /* This file implements the object returned by childNodes property. Note that this is
  37  * not the IXMLDOMNodeList returned by XPath querites - it's implemented in queryresult.c.
  38  * They are different because the list returned by childNodes:
  39  *  - is "live" - changes to the XML tree are automatically reflected in the list
  40  *  - doesn't supports IXMLDOMSelection
  41  *  - note that an attribute node have a text child in DOM but not in the XPath data model
  42  *    thus the child is inaccessible by an XPath query
  43  */
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  46
  47 #ifdef HAVE_LIBXML2
  48
  49 typedef struct _xmlnodelist
  50 {
  51     const struct IXMLDOMNodeListVtbl *lpVtbl;
  52     LONG ref;
  53     xmlNodePtr parent;
  54     xmlNodePtr current;
  55 } xmlnodelist;
  56
  57 static inline xmlnodelist *impl_from_IXMLDOMNodeList( IXMLDOMNodeList *iface )
  58 {
  59     return (xmlnodelist *)((char*)iface - FIELD_OFFSET(xmlnodelist, lpVtbl));
  60 }
  61
  62 static HRESULT WINAPI xmlnodelist_QueryInterface(
  63     IXMLDOMNodeList *iface,
  64     REFIID riid,
  65     void** ppvObject )
  66 {
  67     TRACE("%p %s %p\n", iface, debugstr_guid(riid), ppvObject);
  68
  69     if ( IsEqualGUID( riid, &IID_IUnknown ) ||
  70          IsEqualGUID( riid, &IID_IDispatch ) ||
  71          IsEqualGUID( riid, &IID_IXMLDOMNodeList ) )
  72     {
  73         *ppvObject = iface;
  74     }
  75     else
  76     {
  77         FIXME("interface %s not implemented\n", debugstr_guid(riid));
  78         *ppvObject = NULL;
  79         return E_NOINTERFACE;
  80     }
  81
  82     IXMLDOMNodeList_AddRef( iface );
  83
  84     return S_OK;
  85 }
  86
  87 static ULONG WINAPI xmlnodelist_AddRef(
  88     IXMLDOMNodeList *iface )
  89 {
  90     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
  91     return InterlockedIncrement( &This->ref );
  92 }
  93
  94 static ULONG WINAPI xmlnodelist_Release(
  95     IXMLDOMNodeList *iface )
  96 {
  97     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
  98     ULONG ref;
  99
 100     ref = InterlockedDecrement( &This->ref );
 101     if ( ref == 0 )
 102     {
 103         xmldoc_release( This->parent->doc );
 104         HeapFree( GetProcessHeap(), 0, This );
 105     }
 106
 107     return ref;
 108 }
 109
 110 static HRESULT WINAPI xmlnodelist_GetTypeInfoCount(
 111     IXMLDOMNodeList *iface,
 112     UINT* pctinfo )
 113 {
 114     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 115
 116     TRACE("(%p)->(%p)\n", This, pctinfo);
 117
 118     *pctinfo = 1;
 119
 120     return S_OK;
 121 }
 122
 123 static HRESULT WINAPI xmlnodelist_GetTypeInfo(
 124     IXMLDOMNodeList *iface,
 125     UINT iTInfo,
 126     LCID lcid,
 127     ITypeInfo** ppTInfo )
 128 {
 129     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 130     HRESULT hr;
 131
 132     TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 133
 134     hr = get_typeinfo(IXMLDOMNodeList_tid, ppTInfo);
 135
 136     return hr;
 137 }
 138
 139 static HRESULT WINAPI xmlnodelist_GetIDsOfNames(
 140     IXMLDOMNodeList *iface,
 141     REFIID riid,
 142     LPOLESTR* rgszNames,
 143     UINT cNames,
 144     LCID lcid,
 145     DISPID* rgDispId )
 146 {
 147     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 148     ITypeInfo *typeinfo;
 149     HRESULT hr;
 150
 151     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 152           lcid, rgDispId);
 153
 154     if(!rgszNames || cNames == 0 || !rgDispId)
 155         return E_INVALIDARG;
 156
 157     hr = get_typeinfo(IXMLDOMNodeList_tid, &typeinfo);
 158     if(SUCCEEDED(hr))
 159     {
 160         hr = ITypeInfo_GetIDsOfNames(typeinfo, rgszNames, cNames, rgDispId);
 161         ITypeInfo_Release(typeinfo);
 162     }
 163
 164     return hr;
 165 }
 166
 167 static HRESULT WINAPI xmlnodelist_Invoke(
 168     IXMLDOMNodeList *iface,
 169     DISPID dispIdMember,
 170     REFIID riid,
 171     LCID lcid,
 172     WORD wFlags,
 173     DISPPARAMS* pDispParams,
 174     VARIANT* pVarResult,
 175     EXCEPINFO* pExcepInfo,
 176     UINT* puArgErr )
 177 {
 178     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 179     ITypeInfo *typeinfo;
 180     HRESULT hr;
 181
 182     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 183           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 184
 185     hr = get_typeinfo(IXMLDOMNodeList_tid, &typeinfo);
 186     if(SUCCEEDED(hr))
 187     {
 188         hr = ITypeInfo_Invoke(typeinfo, &(This->lpVtbl), dispIdMember, wFlags, pDispParams,
 189                 pVarResult, pExcepInfo, puArgErr);
 190         ITypeInfo_Release(typeinfo);
 191     }
 192
 193     return hr;
 194 }
 195
 196 static HRESULT WINAPI xmlnodelist_get_item(
 197         IXMLDOMNodeList* iface,
 198         long index,
 199         IXMLDOMNode** listItem)
 200 {
 201     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 202     xmlNodePtr curr;
 203     long nodeIndex = 0;
 204
 205     TRACE("%p %ld\n", This, index);
 206
 207     *listItem = NULL;
 208
 209     if (index < 0)
 210         return S_FALSE;
 211
 212     curr = This->parent->children;
 213     while(curr)
 214     {
 215         if(nodeIndex++ == index) break;
 216         curr = curr->next;
 217     }
 218     if(!curr) return S_FALSE;
 219
 220     *listItem = create_node( curr );
 221
 222     return S_OK;
 223 }
 224
 225 static HRESULT WINAPI xmlnodelist_get_length(
 226         IXMLDOMNodeList* iface,
 227         long* listLength)
 228 {
 229
 230     xmlNodePtr curr;
 231     long nodeCount = 0;
 232
 233     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 234
 235     TRACE("%p\n", This);
 236
 237     curr = This->parent->children;
 238     while (curr)
 239     {
 240         nodeCount++;
 241         curr = curr->next;
 242     }
 243
 244     *listLength = nodeCount;
 245     return S_OK;
 246 }
 247
 248 static HRESULT WINAPI xmlnodelist_nextNode(
 249         IXMLDOMNodeList* iface,
 250         IXMLDOMNode** nextItem)
 251 {
 252     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 253
 254     TRACE("%p %p\n", This, nextItem );
 255
 256     *nextItem = NULL;
 257
 258     if (!This->current)
 259         return S_FALSE;
 260
 261     *nextItem = create_node( This->current );
 262     This->current = This->current->next;
 263     return S_OK;
 264 }
 265
 266 static HRESULT WINAPI xmlnodelist_reset(
 267         IXMLDOMNodeList* iface)
 268 {
 269     xmlnodelist *This = impl_from_IXMLDOMNodeList( iface );
 270
 271     TRACE("%p\n", This);
 272     This->current = This->parent->children;
 273     return S_OK;
 274 }
 275
 276 static HRESULT WINAPI xmlnodelist__newEnum(
 277         IXMLDOMNodeList* iface,
 278         IUnknown** ppUnk)
 279 {
 280     FIXME("\n");
 281     return E_NOTIMPL;
 282 }
 283
 284
 285 static const struct IXMLDOMNodeListVtbl xmlnodelist_vtbl =
 286 {
 287     xmlnodelist_QueryInterface,
 288     xmlnodelist_AddRef,
 289     xmlnodelist_Release,
 290     xmlnodelist_GetTypeInfoCount,
 291     xmlnodelist_GetTypeInfo,
 292     xmlnodelist_GetIDsOfNames,
 293     xmlnodelist_Invoke,
 294     xmlnodelist_get_item,
 295     xmlnodelist_get_length,
 296     xmlnodelist_nextNode,
 297     xmlnodelist_reset,
 298     xmlnodelist__newEnum,
 299 };
 300
 301 IXMLDOMNodeList* create_children_nodelist( xmlNodePtr node )
 302 {
 303     xmlnodelist *nodelist;
 304
 305     nodelist = HeapAlloc( GetProcessHeap(), 0, sizeof *nodelist );
 306     if ( !nodelist )
 307         return NULL;
 308
 309     nodelist->lpVtbl = &xmlnodelist_vtbl;
 310     nodelist->ref = 1;
 311     nodelist->parent = node;
 312     nodelist->current = node->children;
 313
 314     xmldoc_add_ref( node->doc );
 315
 316     return (IXMLDOMNodeList*) &nodelist->lpVtbl;
 317 }
 318
 319 #endif