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 <stdarg.h>
  20
  21 #define COBJMACROS
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winuser.h"
  26 #include "ole2.h"
  27 #include "mshtmcid.h"
  28 #include "shlguid.h"
  29
  30 #include "wine/debug.h"
  31
  32 #include "mshtml_private.h"
  33 #include "htmlscript.h"
  34 #include "htmlevent.h"
  35 #include "binding.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=%ld\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         nsIDOMEventListener_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=%ld\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(GeckoBrowser *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
 170     if(!doc || !doc->browser)
 171         return NS_ERROR_FAILURE;
 172
 173     TRACE("(%p)->(%p)\n", doc, event);
 174
 175     update_doc(doc->browser->doc, UPDATE_UI);
 176     if(doc->browser->usermode == EDITMODE)
 177         handle_edit_event(doc, event);
 178
 179     return NS_OK;
 180 }
 181
 182 static void handle_docobj_load(HTMLDocumentObj *doc)
 183 {
 184     IOleCommandTarget *olecmd = NULL;
 185     HRESULT hres;
 186
 187     if(doc->nscontainer->editor_controller) {
 188         nsIController_Release(doc->nscontainer->editor_controller);
 189         doc->nscontainer->editor_controller = NULL;
 190     }
 191
 192     if(doc->nscontainer->usermode == EDITMODE)
 193         setup_editor_controller(doc->nscontainer);
 194
 195     if(doc->client) {
 196         hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 197         if(FAILED(hres))
 198             olecmd = NULL;
 199     }
 200
 201     if(doc->download_state) {
 202         if(olecmd) {
 203             VARIANT progress;
 204
 205             V_VT(&progress) = VT_I4;
 206             V_I4(&progress) = 0;
 207             IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_SETPROGRESSPOS,
 208                     OLECMDEXECOPT_DONTPROMPTUSER, &progress, NULL);
 209         }
 210
 211         set_download_state(doc, 0);
 212     }
 213
 214     if(olecmd) {
 215         IOleCommandTarget_Exec(olecmd, &CGID_ShellDocView, 103, 0, NULL, NULL);
 216         IOleCommandTarget_Exec(olecmd, &CGID_MSHTML, IDM_PARSECOMPLETE, 0, NULL, NULL);
 217         IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_HTTPEQUIV_DONE, 0, NULL, NULL);
 218
 219         IOleCommandTarget_Release(olecmd);
 220     }
 221 }
 222
 223 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 224 {
 225     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 226     HTMLDocumentNode *doc = This->This->doc;
 227     HTMLDocumentObj *doc_obj = NULL;
 228     DOMEvent *load_event;
 229     HRESULT hres;
 230
 231     TRACE("(%p)\n", doc);
 232
 233     if(!doc || !doc->basedoc.window)
 234         return NS_ERROR_FAILURE;
 235     if(doc->basedoc.doc_obj && doc->basedoc.doc_obj->basedoc.doc_node == doc)
 236         doc_obj = doc->basedoc.doc_obj;
 237
 238     connect_scripts(doc->window);
 239
 240     htmldoc_addref(&doc->basedoc);
 241
 242     if(doc_obj)
 243         handle_docobj_load(doc_obj);
 244
 245     set_ready_state(doc->basedoc.window, READYSTATE_COMPLETE);
 246
 247     if(doc_obj) {
 248         if(doc_obj->view_sink)
 249             IAdviseSink_OnViewChange(doc_obj->view_sink, DVASPECT_CONTENT, -1);
 250
 251         set_statustext(doc_obj, IDS_STATUS_DONE, NULL);
 252
 253         update_title(doc_obj);
 254     }
 255
 256     if(doc_obj && doc_obj->nscontainer->usermode != EDITMODE && doc_obj->doc_object_service
 257        && !(doc->basedoc.window->load_flags & BINDING_REFRESH))
 258         IDocObjectService_FireDocumentComplete(doc_obj->doc_object_service,
 259                 &doc->basedoc.window->base.IHTMLWindow2_iface, 0);
 260
 261     if(doc->nsdoc) {
 262         hres = create_document_event(doc, EVENTID_LOAD, &load_event);
 263         if(SUCCEEDED(hres)) {
 264             dispatch_event(&doc->node.event_target, load_event);
 265             IDOMEvent_Release(&load_event->IDOMEvent_iface);
 266         }
 267     }else {
 268         WARN("no nsdoc\n");
 269     }
 270
 271     if(doc->window) {
 272         hres = create_event_from_nsevent(event, dispex_compat_mode(&doc->node.event_target.dispex), &load_event);
 273         if(SUCCEEDED(hres)) {
 274             dispatch_event(&doc->window->event_target, load_event);
 275             IDOMEvent_Release(&load_event->IDOMEvent_iface);
 276         }
 277     }else {
 278         WARN("no window\n");
 279     }
 280
 281     htmldoc_release(&doc->basedoc);
 282     return NS_OK;
 283 }
 284
 285 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *nsevent)
 286 {
 287     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 288     HTMLDocumentNode *doc = This->This->doc;
 289     nsIDOMEventTarget *event_target;
 290     nsIDOMNode *nsnode;
 291     HTMLDOMNode *node;
 292     DOMEvent *event;
 293     nsresult nsres;
 294     HRESULT hres;
 295
 296     TRACE("%p\n", This->This);
 297
 298     if(!doc) {
 299         WARN("NULL doc\n");
 300         return NS_OK;
 301     }
 302
 303     nsres = nsIDOMEvent_GetTarget(nsevent, &event_target);
 304     if(NS_FAILED(nsres) || !event_target) {
 305         ERR("GetEventTarget failed: %08lx\n", nsres);
 306         return NS_OK;
 307     }
 308
 309     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 310     nsIDOMEventTarget_Release(event_target);
 311     if(NS_FAILED(nsres)) {
 312         ERR("Could not get nsIDOMNode: %08lx\n", nsres);
 313         return NS_OK;
 314     }
 315
 316     hres = get_node(nsnode, TRUE, &node);
 317     nsIDOMNode_Release(nsnode);
 318     if(FAILED(hres))
 319         return NS_OK;
 320
 321     hres = create_event_from_nsevent(nsevent, dispex_compat_mode(&doc->node.event_target.dispex), &event);
 322     if(FAILED(hres)) {
 323         node_release(node);
 324         return NS_OK;
 325     }
 326
 327     /* If we fine need for more special cases here, we may consider handling it in a more generic way. */
 328     if(event->event_id == EVENTID_FOCUS || event->event_id == EVENTID_BLUR) {
 329         DOMEvent *focus_event;
 330
 331         hres = create_document_event(doc, event->event_id == EVENTID_FOCUS ? EVENTID_FOCUSIN : EVENTID_FOCUSOUT, &focus_event);
 332         if(SUCCEEDED(hres)) {
 333             dispatch_event(&node->event_target, focus_event);
 334             IDOMEvent_Release(&focus_event->IDOMEvent_iface);
 335         }
 336     }
 337
 338     dispatch_event(&node->event_target, event);
 339
 340     IDOMEvent_Release(&event->IDOMEvent_iface);
 341     node_release(node);
 342     return NS_OK;
 343 }
 344
 345 #define EVENTLISTENER_VTBL(handler) \
 346     { \
 347         nsDOMEventListener_QueryInterface, \
 348         nsDOMEventListener_AddRef, \
 349         nsDOMEventListener_Release, \
 350         handler, \
 351     }
 352
 353 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 354 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 355 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 356 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 357 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 358
 359 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 360         nsIDOMEventListener *listener, BOOL capture)
 361 {
 362     nsAString type_str;
 363     nsresult nsres;
 364
 365     nsAString_InitDepend(&type_str, type);
 366     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture, FALSE, 1);
 367     nsAString_Finish(&type_str);
 368     if(NS_FAILED(nsres))
 369         ERR("AddEventTarget failed: %08lx\n", nsres);
 370
 371 }
 372
 373 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 374         const nsIDOMEventListenerVtbl *vtbl)
 375 {
 376     This->nsIDOMEventListener_iface.lpVtbl = vtbl;
 377     This->This = listener;
 378 }
 379
 380 static nsIDOMEventTarget *get_default_document_target(HTMLDocumentNode *doc)
 381 {
 382     nsIDOMEventTarget *target;
 383     nsISupports *target_iface;
 384     nsresult nsres;
 385
 386     target_iface = doc->window ? (nsISupports*)doc->basedoc.window->nswindow : (nsISupports*)doc->nsdoc;
 387     nsres = nsISupports_QueryInterface(target_iface, &IID_nsIDOMEventTarget, (void**)&target);
 388     return NS_SUCCEEDED(nsres) ? target : NULL;
 389 }
 390
 391 void add_nsevent_listener(HTMLDocumentNode *doc, nsIDOMNode *nsnode, LPCWSTR type)
 392 {
 393     nsIDOMEventTarget *target;
 394     nsresult nsres;
 395
 396     if(nsnode) {
 397         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMEventTarget, (void**)&target);
 398         assert(nsres == NS_OK);
 399     }else {
 400         target = get_default_document_target(doc);
 401         if(!target)
 402             return;
 403     }
 404
 405     init_event(target, type, &doc->nsevent_listener->htmlevent_listener.nsIDOMEventListener_iface,
 406             TRUE);
 407     nsIDOMEventTarget_Release(target);
 408 }
 409
 410 static void detach_nslistener(HTMLDocumentNode *doc, const WCHAR *type, nsEventListener *listener, cpp_bool is_capture)
 411 {
 412     nsIDOMEventTarget *target;
 413     nsAString type_str;
 414     nsresult nsres;
 415
 416     target = get_default_document_target(doc);
 417     if(!target)
 418         return;
 419
 420     nsAString_InitDepend(&type_str, type);
 421     nsres = nsIDOMEventTarget_RemoveEventListener(target, &type_str,
 422             &listener->nsIDOMEventListener_iface, is_capture);
 423     nsAString_Finish(&type_str);
 424     nsIDOMEventTarget_Release(target);
 425     if(NS_FAILED(nsres))
 426         ERR("RemoveEventTarget failed: %08lx\n", nsres);
 427 }
 428
 429 void detach_nsevent(HTMLDocumentNode *doc, const WCHAR *type)
 430 {
 431     detach_nslistener(doc, type, &doc->nsevent_listener->htmlevent_listener, TRUE);
 432 }
 433
 434 void release_nsevents(HTMLDocumentNode *doc)
 435 {
 436     nsDocumentEventListener *listener = doc->nsevent_listener;
 437
 438     TRACE("%p %p\n", doc, doc->nsevent_listener);
 439
 440     if(!listener)
 441         return;
 442
 443     detach_nslistener(doc, L"blur",     &listener->blur_listener,     TRUE);
 444     detach_nslistener(doc, L"focus",    &listener->focus_listener,    TRUE);
 445     detach_nslistener(doc, L"keypress", &listener->keypress_listener, FALSE);
 446     detach_nslistener(doc, L"load",     &listener->load_listener,     TRUE);
 447
 448     listener->doc = NULL;
 449     release_listener(listener);
 450     doc->nsevent_listener = NULL;
 451 }
 452
 453 void init_nsevents(HTMLDocumentNode *doc)
 454 {
 455     nsDocumentEventListener *listener;
 456     nsIDOMEventTarget *target;
 457
 458     listener = heap_alloc(sizeof(nsDocumentEventListener));
 459     if(!listener)
 460         return;
 461
 462     TRACE("%p %p\n", doc, listener);
 463
 464     listener->ref = 1;
 465     listener->doc = doc;
 466
 467     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 468     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 469     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 470     init_listener(&listener->load_listener,        listener, &load_vtbl);
 471     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 472
 473     doc->nsevent_listener = listener;
 474
 475     target = get_default_document_target(doc);
 476     if(!target)
 477         return;
 478
 479     init_event(target, L"blur",     &listener->blur_listener.nsIDOMEventListener_iface,     TRUE);
 480     init_event(target, L"focus",    &listener->focus_listener.nsIDOMEventListener_iface,    TRUE);
 481     init_event(target, L"keypress", &listener->keypress_listener.nsIDOMEventListener_iface, FALSE);
 482     init_event(target, L"load",     &listener->load_listener.nsIDOMEventListener_iface,     TRUE);
 483
 484     nsIDOMEventTarget_Release(target);
 485 }