dll/win32/mshtml/propbag.c

   1 /*
   2  * Copyright 2010 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "mshtml_private.h"
  20
  21 typedef struct {
  22     IPropertyBag  IPropertyBag_iface;
  23     IPropertyBag2 IPropertyBag2_iface;
  24
  25     LONG ref;
  26
  27     struct list props;
  28 } PropertyBag;
  29
  30 typedef struct {
  31     struct list entry;
  32     WCHAR *name;
  33     WCHAR *value;
  34 } param_prop_t;
  35
  36 static void free_prop(param_prop_t *prop)
  37 {
  38     list_remove(&prop->entry);
  39
  40     heap_free(prop->name);
  41     heap_free(prop->value);
  42     heap_free(prop);
  43 }
  44
  45 static param_prop_t *find_prop(PropertyBag *prop_bag, const WCHAR *name)
  46 {
  47     param_prop_t *iter;
  48
  49     LIST_FOR_EACH_ENTRY(iter, &prop_bag->props, param_prop_t, entry) {
  50         if(!strcmpiW(iter->name, name))
  51             return iter;
  52     }
  53
  54     return NULL;
  55 }
  56
  57 static HRESULT add_prop(PropertyBag *prop_bag, const WCHAR *name, const WCHAR *value)
  58 {
  59     param_prop_t *prop;
  60
  61     if(!name || !value)
  62         return S_OK;
  63
  64     TRACE("%p %s %s\n", prop_bag, debugstr_w(name), debugstr_w(value));
  65
  66     prop = heap_alloc(sizeof(*prop));
  67     if(!prop)
  68         return E_OUTOFMEMORY;
  69
  70     prop->name = heap_strdupW(name);
  71     prop->value = heap_strdupW(value);
  72     if(!prop->name || !prop->value) {
  73         list_init(&prop->entry);
  74         free_prop(prop);
  75         return E_OUTOFMEMORY;
  76     }
  77
  78     list_add_tail(&prop_bag->props, &prop->entry);
  79     return S_OK;
  80 }
  81
  82 static inline PropertyBag *impl_from_IPropertyBag(IPropertyBag *iface)
  83 {
  84     return CONTAINING_RECORD(iface, PropertyBag, IPropertyBag_iface);
  85 }
  86
  87 static HRESULT WINAPI PropertyBag_QueryInterface(IPropertyBag *iface, REFIID riid, void **ppv)
  88 {
  89     PropertyBag *This = impl_from_IPropertyBag(iface);
  90
  91     if(IsEqualGUID(&IID_IUnknown, riid)) {
  92         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
  93         *ppv = &This->IPropertyBag_iface;
  94     }else if(IsEqualGUID(&IID_IPropertyBag, riid)) {
  95         TRACE("(%p)->(IID_IPropertyBag %p)\n", This, ppv);
  96         *ppv = &This->IPropertyBag_iface;
  97     }else if(IsEqualGUID(&IID_IPropertyBag2, riid)) {
  98         TRACE("(%p)->(IID_IPropertyBag2 %p)\n", This, ppv);
  99         *ppv = &This->IPropertyBag2_iface;
 100     }else {
 101         WARN("Unsopported interface %s\n", debugstr_guid(riid));
 102         *ppv = NULL;
 103         return E_NOINTERFACE;
 104     }
 105
 106     IUnknown_AddRef((IUnknown*)*ppv);
 107     return S_OK;
 108 }
 109
 110 static ULONG WINAPI PropertyBag_AddRef(IPropertyBag *iface)
 111 {
 112     PropertyBag *This = impl_from_IPropertyBag(iface);
 113     LONG ref = InterlockedIncrement(&This->ref);
 114
 115     TRACE("(%p) ref=%d\n", This, ref);
 116
 117     return ref;
 118 }
 119
 120 static ULONG WINAPI PropertyBag_Release(IPropertyBag *iface)
 121 {
 122     PropertyBag *This = impl_from_IPropertyBag(iface);
 123     LONG ref = InterlockedDecrement(&This->ref);
 124
 125     TRACE("(%p) ref=%d\n", This, ref);
 126
 127     if(!ref) {
 128         while(!list_empty(&This->props))
 129             free_prop(LIST_ENTRY(This->props.next, param_prop_t, entry));
 130         heap_free(This);
 131     }
 132
 133     return ref;
 134 }
 135
 136 static HRESULT WINAPI PropertyBag_Read(IPropertyBag *iface, LPCOLESTR pszPropName, VARIANT *pVar, IErrorLog *pErrorLog)
 137 {
 138     PropertyBag *This = impl_from_IPropertyBag(iface);
 139     param_prop_t *prop;
 140     VARIANT v;
 141
 142     TRACE("(%p)->(%s %p %p)\n", This, debugstr_w(pszPropName), pVar, pErrorLog);
 143
 144     prop = find_prop(This, pszPropName);
 145     if(!prop) {
 146         TRACE("Not found\n");
 147         return E_INVALIDARG;
 148     }
 149
 150     V_BSTR(&v) = SysAllocString(prop->value);
 151     if(!V_BSTR(&v))
 152         return E_OUTOFMEMORY;
 153
 154     if(V_VT(pVar) != VT_BSTR) {
 155         HRESULT hres;
 156
 157         V_VT(&v) = VT_BSTR;
 158         hres = VariantChangeType(pVar, &v, 0, V_VT(pVar));
 159         SysFreeString(V_BSTR(&v));
 160         return hres;
 161     }
 162
 163     V_BSTR(pVar) = V_BSTR(&v);
 164     return S_OK;
 165 }
 166
 167 static HRESULT WINAPI PropertyBag_Write(IPropertyBag *iface, LPCOLESTR pszPropName, VARIANT *pVar)
 168 {
 169     PropertyBag *This = impl_from_IPropertyBag(iface);
 170     FIXME("(%p)->(%s %s)\n", This, debugstr_w(pszPropName), debugstr_variant(pVar));
 171     return E_NOTIMPL;
 172 }
 173
 174 static const IPropertyBagVtbl PropertyBagVtbl = {
 175     PropertyBag_QueryInterface,
 176     PropertyBag_AddRef,
 177     PropertyBag_Release,
 178     PropertyBag_Read,
 179     PropertyBag_Write
 180 };
 181
 182 static inline PropertyBag *impl_from_IPropertyBag2(IPropertyBag2 *iface)
 183 {
 184     return CONTAINING_RECORD(iface, PropertyBag, IPropertyBag2_iface);
 185 }
 186
 187 static HRESULT WINAPI PropertyBag2_QueryInterface(IPropertyBag2 *iface, REFIID riid, void **ppv)
 188 {
 189     PropertyBag *This = impl_from_IPropertyBag2(iface);
 190     return IPropertyBag_QueryInterface(&This->IPropertyBag_iface, riid, ppv);
 191 }
 192
 193 static ULONG WINAPI PropertyBag2_AddRef(IPropertyBag2 *iface)
 194 {
 195     PropertyBag *This = impl_from_IPropertyBag2(iface);
 196     return IPropertyBag_AddRef(&This->IPropertyBag_iface);
 197 }
 198
 199 static ULONG WINAPI PropertyBag2_Release(IPropertyBag2 *iface)
 200 {
 201     PropertyBag *This = impl_from_IPropertyBag2(iface);
 202     return IPropertyBag_Release(&This->IPropertyBag_iface);
 203 }
 204
 205 static HRESULT WINAPI PropertyBag2_Read(IPropertyBag2 *iface, ULONG cProperties, PROPBAG2 *pPropBag,
 206         IErrorLog *pErrLog, VARIANT *pvarValue, HRESULT *phrError)
 207 {
 208     PropertyBag *This = impl_from_IPropertyBag2(iface);
 209     FIXME("(%p)->(%d %p %p %p %p)\n", This, cProperties, pPropBag, pErrLog, pvarValue, phrError);
 210     return E_NOTIMPL;
 211 }
 212
 213 static HRESULT WINAPI PropertyBag2_Write(IPropertyBag2 *iface, ULONG cProperties, PROPBAG2 *pPropBag, VARIANT *pvarValue)
 214 {
 215     PropertyBag *This = impl_from_IPropertyBag2(iface);
 216     FIXME("(%p)->(%d %p %s)\n", This, cProperties, pPropBag, debugstr_variant(pvarValue));
 217     return E_NOTIMPL;
 218 }
 219
 220 static HRESULT WINAPI PropertyBag2_CountProperties(IPropertyBag2 *iface, ULONG *pcProperties)
 221 {
 222     PropertyBag *This = impl_from_IPropertyBag2(iface);
 223     FIXME("(%p)->(%p)\n", This, pcProperties);
 224     return E_NOTIMPL;
 225 }
 226
 227 static HRESULT WINAPI PropertyBag2_GetPropertyInfo(IPropertyBag2 *iface, ULONG iProperty, ULONG cProperties,
 228         PROPBAG2 *pPropBag, ULONG *pcProperties)
 229 {
 230     PropertyBag *This = impl_from_IPropertyBag2(iface);
 231     FIXME("(%p)->(%u %u %p %p)\n", This, iProperty, cProperties, pPropBag, pcProperties);
 232     return E_NOTIMPL;
 233 }
 234
 235 static HRESULT WINAPI PropertyBag2_LoadObject(IPropertyBag2 *iface, LPCOLESTR pstrName, DWORD dwHint,
 236         IUnknown *pUnkObject, IErrorLog *pErrLog)
 237 {
 238     PropertyBag *This = impl_from_IPropertyBag2(iface);
 239     FIXME("(%p)->(%s %x %p %p)\n", This, debugstr_w(pstrName), dwHint, pUnkObject, pErrLog);
 240     return E_NOTIMPL;
 241 }
 242
 243 static const IPropertyBag2Vtbl PropertyBag2Vtbl = {
 244     PropertyBag2_QueryInterface,
 245     PropertyBag2_AddRef,
 246     PropertyBag2_Release,
 247     PropertyBag2_Read,
 248     PropertyBag2_Write,
 249     PropertyBag2_CountProperties,
 250     PropertyBag2_GetPropertyInfo,
 251     PropertyBag2_LoadObject
 252 };
 253
 254 static HRESULT fill_props(nsIDOMHTMLElement *nselem, PropertyBag *prop_bag)
 255 {
 256     const PRUnichar *name, *value;
 257     nsAString name_str, value_str;
 258     nsIDOMHTMLCollection *params;
 259     nsIDOMHTMLElement *param_elem;
 260     UINT32 length, i;
 261     nsIDOMNode *nsnode;
 262     nsresult nsres;
 263     HRESULT hres = S_OK;
 264
 265     static const PRUnichar nameW[] = {'n','a','m','e',0};
 266     static const PRUnichar paramW[] = {'p','a','r','a','m',0};
 267     static const PRUnichar valueW[] = {'v','a','l','u','e',0};
 268
 269     nsAString_InitDepend(&name_str, paramW);
 270     nsres = nsIDOMHTMLElement_GetElementsByTagName(nselem, &name_str, &params);
 271     nsAString_Finish(&name_str);
 272     if(NS_FAILED(nsres))
 273         return E_FAIL;
 274
 275     nsres = nsIDOMHTMLCollection_GetLength(params, &length);
 276     if(NS_FAILED(nsres))
 277         length = 0;
 278
 279     for(i=0; i < length; i++) {
 280         nsres = nsIDOMHTMLCollection_Item(params, i, &nsnode);
 281         if(NS_FAILED(nsres)) {
 282             hres = E_FAIL;
 283             break;
 284         }
 285
 286         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMHTMLElement, (void**)&param_elem);
 287         nsIDOMNode_Release(nsnode);
 288         if(NS_FAILED(nsres)) {
 289             hres = E_FAIL;
 290             break;
 291         }
 292
 293         nsres = get_elem_attr_value(param_elem, nameW, &name_str, &name);
 294         if(NS_SUCCEEDED(nsres)) {
 295             nsres = get_elem_attr_value(param_elem, valueW, &value_str, &value);
 296             if(NS_SUCCEEDED(nsres)) {
 297                 hres = add_prop(prop_bag, name, value);
 298                 nsAString_Finish(&value_str);
 299             }
 300
 301             nsAString_Finish(&name_str);
 302         }
 303
 304         nsIDOMHTMLElement_Release(param_elem);
 305         if(FAILED(hres))
 306             break;
 307         if(NS_FAILED(nsres)) {
 308             hres = E_FAIL;
 309             break;
 310         }
 311     }
 312
 313     nsIDOMHTMLCollection_Release(params);
 314     return hres;
 315 }
 316
 317 HRESULT create_param_prop_bag(nsIDOMHTMLElement *nselem, IPropertyBag **ret)
 318 {
 319     PropertyBag *prop_bag;
 320     HRESULT hres;
 321
 322     prop_bag = heap_alloc(sizeof(*prop_bag));
 323     if(!prop_bag)
 324         return E_OUTOFMEMORY;
 325
 326     prop_bag->IPropertyBag_iface.lpVtbl  = &PropertyBagVtbl;
 327     prop_bag->IPropertyBag2_iface.lpVtbl = &PropertyBag2Vtbl;
 328     prop_bag->ref = 1;
 329
 330     list_init(&prop_bag->props);
 331     hres = fill_props(nselem, prop_bag);
 332     if(FAILED(hres) || list_empty(&prop_bag->props)) {
 333         IPropertyBag_Release(&prop_bag->IPropertyBag_iface);
 334         *ret = NULL;
 335         return hres;
 336     }
 337
 338     *ret = &prop_bag->IPropertyBag_iface;
 339     return S_OK;
 340 }