dlls/mshtml/nsevents.c

   1 /*
   2  * Copyright 2007-2008 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 "config.h"
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winuser.h"
  28 #include "ole2.h"
  29 #include "mshtmcid.h"
  30 #include "shlguid.h"
  31
  32 #include "wine/debug.h"
  33
  34 #include "mshtml_private.h"
  35 #include "htmlevent.h"
  36 #include "resource.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  39
  40 typedef struct {
  41     nsIDOMEventListener nsIDOMEventListener_iface;
  42     nsDocumentEventListener *This;
  43 } nsEventListener;
  44
  45 struct nsDocumentEventListener {
  46     nsEventListener blur_listener;
  47     nsEventListener focus_listener;
  48     nsEventListener keypress_listener;
  49     nsEventListener load_listener;
  50     nsEventListener htmlevent_listener;
  51
  52     LONG ref;
  53
  54     HTMLDocumentNode *doc;
  55 };
  56
  57 static LONG release_listener(nsDocumentEventListener *This)
  58 {
  59     LONG ref = InterlockedDecrement(&This->ref);
  60
  61     TRACE("(%p) ref=%d\n", This, ref);
  62
  63     if(!ref)
  64         heap_free(This);
  65
  66     return ref;
  67 }
  68
  69 static inline nsEventListener *impl_from_nsIDOMEventListener(nsIDOMEventListener *iface)
  70 {
  71     return CONTAINING_RECORD(iface, nsEventListener, nsIDOMEventListener_iface);
  72 }
  73
  74 static nsresult NSAPI nsDOMEventListener_QueryInterface(nsIDOMEventListener *iface,
  75         nsIIDRef riid, void **result)
  76 {
  77     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
  78
  79     *result = NULL;
  80
  81     if(IsEqualGUID(&IID_nsISupports, riid)) {
  82         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
  83         *result = &This->nsIDOMEventListener_iface;
  84     }else if(IsEqualGUID(&IID_nsIDOMEventListener, riid)) {
  85         TRACE("(%p)->(IID_nsIDOMEventListener %p)\n", This, result);
  86         *result = &This->nsIDOMEventListener_iface;
  87     }
  88
  89     if(*result) {
  90         nsIWebBrowserChrome_AddRef(&This->nsIDOMEventListener_iface);
  91         return NS_OK;
  92     }
  93
  94     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
  95     return NS_NOINTERFACE;
  96 }
  97
  98 static nsrefcnt NSAPI nsDOMEventListener_AddRef(nsIDOMEventListener *iface)
  99 {
 100     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 101     LONG ref = InterlockedIncrement(&This->This->ref);
 102
 103     TRACE("(%p) ref=%d\n", This->This, ref);
 104
 105     return ref;
 106 }
 107
 108 static nsrefcnt NSAPI nsDOMEventListener_Release(nsIDOMEventListener *iface)
 109 {
 110     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 111
 112     return release_listener(This->This);
 113 }
 114
 115 static BOOL is_doc_child_focus(NSContainer *nscontainer)
 116 {
 117     HWND hwnd;
 118
 119     for(hwnd = GetFocus(); hwnd && hwnd != nscontainer->hwnd; hwnd = GetParent(hwnd));
 120
 121     return hwnd != NULL;
 122 }
 123
 124 static nsresult NSAPI handle_blur(nsIDOMEventListener *iface, nsIDOMEvent *event)
 125 {
 126     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 127     HTMLDocumentNode *doc = This->This->doc;
 128     HTMLDocumentObj *doc_obj;
 129
 130     TRACE("(%p)\n", doc);
 131
 132     if(!doc || !doc->basedoc.doc_obj)
 133         return NS_ERROR_FAILURE;
 134     doc_obj = doc->basedoc.doc_obj;
 135
 136     if(doc_obj->focus && !is_doc_child_focus(doc_obj->nscontainer)) {
 137         doc_obj->focus = FALSE;
 138         notif_focus(doc_obj);
 139     }
 140
 141     return NS_OK;
 142 }
 143
 144 static nsresult NSAPI handle_focus(nsIDOMEventListener *iface, nsIDOMEvent *event)
 145 {
 146     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 147     HTMLDocumentNode *doc = This->This->doc;
 148     HTMLDocumentObj *doc_obj;
 149
 150     TRACE("(%p)\n", doc);
 151
 152     if(!doc)
 153         return NS_ERROR_FAILURE;
 154     doc_obj = doc->basedoc.doc_obj;
 155
 156     if(!doc_obj->focus) {
 157         doc_obj->focus = TRUE;
 158         notif_focus(doc_obj);
 159     }
 160
 161     return NS_OK;
 162 }
 163
 164 static nsresult NSAPI handle_keypress(nsIDOMEventListener *iface,
 165         nsIDOMEvent *event)
 166 {
 167     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 168     HTMLDocumentNode *doc = This->This->doc;
 169     HTMLDocumentObj *doc_obj;
 170
 171     if(!doc)
 172         return NS_ERROR_FAILURE;
 173     doc_obj = doc->basedoc.doc_obj;
 174
 175     TRACE("(%p)->(%p)\n", doc, event);
 176
 177     update_doc(&doc_obj->basedoc, UPDATE_UI);
 178     if(doc_obj->usermode == EDITMODE)
 179         handle_edit_event(&doc_obj->basedoc, event);
 180
 181     return NS_OK;
 182 }
 183
 184 static void handle_docobj_load(HTMLDocumentObj *doc)
 185 {
 186     IOleCommandTarget *olecmd = NULL;
 187     HRESULT hres;
 188
 189     if(doc->nscontainer->editor_controller) {
 190         nsIController_Release(doc->nscontainer->editor_controller);
 191         doc->nscontainer->editor_controller = NULL;
 192     }
 193
 194     if(doc->usermode == EDITMODE)
 195         handle_edit_load(&doc->basedoc);
 196
 197     if(doc->client) {
 198         hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 199         if(FAILED(hres))
 200             olecmd = NULL;
 201     }
 202
 203     if(doc->download_state) {
 204         if(olecmd) {
 205             VARIANT progress;
 206
 207             V_VT(&progress) = VT_I4;
 208             V_I4(&progress) = 0;
 209             IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_SETPROGRESSPOS,
 210                     OLECMDEXECOPT_DONTPROMPTUSER, &progress, NULL);
 211         }
 212
 213         set_download_state(doc, 0);
 214     }
 215
 216     if(olecmd) {
 217         IOleCommandTarget_Exec(olecmd, &CGID_ShellDocView, 103, 0, NULL, NULL);
 218         IOleCommandTarget_Exec(olecmd, &CGID_MSHTML, IDM_PARSECOMPLETE, 0, NULL, NULL);
 219         IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_HTTPEQUIV_DONE, 0, NULL, NULL);
 220
 221         IOleCommandTarget_Release(olecmd);
 222     }
 223 }
 224
 225 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 226 {
 227     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 228     HTMLDocumentNode *doc = This->This->doc;
 229     nsIDOMHTMLElement *nsbody = NULL;
 230     HTMLDocumentObj *doc_obj = NULL;
 231
 232     TRACE("(%p)\n", doc);
 233
 234     if(!doc || !doc->basedoc.window)
 235         return NS_ERROR_FAILURE;
 236     if(doc->basedoc.doc_obj && doc->basedoc.doc_obj->basedoc.doc_node == doc)
 237         doc_obj = doc->basedoc.doc_obj;
 238
 239     connect_scripts(doc->basedoc.window);
 240
 241     if(doc_obj)
 242         handle_docobj_load(doc_obj);
 243
 244     set_ready_state(doc->basedoc.window, READYSTATE_COMPLETE);
 245
 246     if(doc_obj) {
 247         if(doc_obj->view_sink)
 248             IAdviseSink_OnViewChange(doc_obj->view_sink, DVASPECT_CONTENT, -1);
 249
 250         set_statustext(doc_obj, IDS_STATUS_DONE, NULL);
 251
 252         update_title(doc_obj);
 253     }
 254
 255     if(doc_obj && doc_obj->usermode!=EDITMODE && doc_obj->doc_object_service)
 256         IDocObjectService_FireDocumentComplete(doc_obj->doc_object_service,
 257                 &doc->basedoc.window->IHTMLWindow2_iface, 0);
 258
 259     if(!doc->nsdoc) {
 260         ERR("NULL nsdoc\n");
 261         return NS_ERROR_FAILURE;
 262     }
 263
 264     nsIDOMHTMLDocument_GetBody(doc->nsdoc, &nsbody);
 265     if(nsbody) {
 266         fire_event(doc, EVENTID_LOAD, TRUE, (nsIDOMNode*)nsbody, event);
 267         nsIDOMHTMLElement_Release(nsbody);
 268     }
 269
 270     return NS_OK;
 271 }
 272
 273 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 274 {
 275     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 276     HTMLDocumentNode *doc = This->This->doc;
 277     const PRUnichar *type;
 278     nsIDOMEventTarget *event_target;
 279     nsIDOMNode *nsnode;
 280     nsAString type_str;
 281     eventid_t eid;
 282     nsresult nsres;
 283
 284     TRACE("%p\n", This->This);
 285
 286     nsAString_Init(&type_str, NULL);
 287     nsIDOMEvent_GetType(event, &type_str);
 288     nsAString_GetData(&type_str, &type);
 289     eid = str_to_eid(type);
 290     nsAString_Finish(&type_str);
 291
 292     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 293     if(NS_FAILED(nsres) || !event_target) {
 294         ERR("GetEventTarget failed: %08x\n", nsres);
 295         return NS_OK;
 296     }
 297
 298     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 299     nsIDOMEventTarget_Release(event_target);
 300     if(NS_FAILED(nsres)) {
 301         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 302         return NS_OK;
 303     }
 304
 305     fire_event(doc, eid, TRUE, nsnode, event);
 306
 307     nsIDOMNode_Release(nsnode);
 308
 309     return NS_OK;
 310 }
 311
 312 #define EVENTLISTENER_VTBL(handler) \
 313     { \
 314         nsDOMEventListener_QueryInterface, \
 315         nsDOMEventListener_AddRef, \
 316         nsDOMEventListener_Release, \
 317         handler, \
 318     }
 319
 320 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 321 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 322 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 323 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 324 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 325
 326 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 327         nsIDOMEventListener *listener, BOOL capture)
 328 {
 329     nsAString type_str;
 330     nsresult nsres;
 331
 332     nsAString_InitDepend(&type_str, type);
 333     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture, FALSE, 1);
 334     nsAString_Finish(&type_str);
 335     if(NS_FAILED(nsres))
 336         ERR("AddEventTarget failed: %08x\n", nsres);
 337
 338 }
 339
 340 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 341         const nsIDOMEventListenerVtbl *vtbl)
 342 {
 343     This->nsIDOMEventListener_iface.lpVtbl = vtbl;
 344     This->This = listener;
 345 }
 346
 347 void add_nsevent_listener(HTMLDocumentNode *doc, nsIDOMNode *nsnode, LPCWSTR type)
 348 {
 349     nsIDOMEventTarget *target;
 350     nsresult nsres;
 351
 352     if(nsnode)
 353         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMEventTarget, (void**)&target);
 354     else
 355         nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 356     if(NS_FAILED(nsres)) {
 357         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 358         return;
 359     }
 360
 361     init_event(target, type, &doc->nsevent_listener->htmlevent_listener.nsIDOMEventListener_iface,
 362             TRUE);
 363     nsIDOMEventTarget_Release(target);
 364 }
 365
 366 void detach_nsevent(HTMLDocumentNode *doc, const WCHAR *type)
 367 {
 368     nsIDOMEventTarget *target;
 369     nsAString type_str;
 370     nsresult nsres;
 371
 372     if(!doc->basedoc.window)
 373         return;
 374
 375     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 376     if(NS_FAILED(nsres)) {
 377         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 378         return;
 379     }
 380
 381     nsAString_InitDepend(&type_str, type);
 382     nsres = nsIDOMEventTarget_RemoveEventListener(target, &type_str,
 383             &doc->nsevent_listener->htmlevent_listener.nsIDOMEventListener_iface, TRUE);
 384     nsAString_Finish(&type_str);
 385     nsIDOMEventTarget_Release(target);
 386     if(NS_FAILED(nsres))
 387         ERR("RemoveEventTarget failed: %08x\n", nsres);
 388 }
 389
 390 void release_nsevents(HTMLDocumentNode *doc)
 391 {
 392     TRACE("%p %p\n", doc, doc->nsevent_listener);
 393
 394     if(doc->nsevent_listener) {
 395         doc->nsevent_listener->doc = NULL;
 396         release_listener(doc->nsevent_listener);
 397         doc->nsevent_listener = NULL;
 398     }
 399 }
 400
 401 void init_nsevents(HTMLDocumentNode *doc)
 402 {
 403     nsDocumentEventListener *listener;
 404     nsIDOMEventTarget *target;
 405     nsresult nsres;
 406
 407     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 408     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 409     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 410     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 411
 412     listener = heap_alloc(sizeof(nsDocumentEventListener));
 413     if(!listener)
 414         return;
 415
 416     TRACE("%p %p\n", doc, listener);
 417
 418     listener->ref = 1;
 419     listener->doc = doc;
 420
 421     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 422     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 423     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 424     init_listener(&listener->load_listener,        listener, &load_vtbl);
 425     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 426
 427     doc->nsevent_listener = listener;
 428
 429     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 430     if(NS_FAILED(nsres)) {
 431         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 432         return;
 433     }
 434
 435     init_event(target, wsz_blur,     &listener->blur_listener.nsIDOMEventListener_iface,     TRUE);
 436     init_event(target, wsz_focus,    &listener->focus_listener.nsIDOMEventListener_iface,    TRUE);
 437     init_event(target, wsz_keypress, &listener->keypress_listener.nsIDOMEventListener_iface, FALSE);
 438     init_event(target, wsz_load,     &listener->load_listener.nsIDOMEventListener_iface,     TRUE);
 439
 440     nsIDOMEventTarget_Release(target);
 441 }