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 "htmlscript.h"
  36 #include "htmlevent.h"
  37 #include "binding.h"
  38 #include "resource.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  41
  42 static const PRUnichar blurW[]      = {'b','l','u','r',0};
  43 static const PRUnichar focusW[]     = {'f','o','c','u','s',0};
  44 static const PRUnichar keypressW[]  = {'k','e','y','p','r','e','s','s',0};
  45 static const PRUnichar loadW[]      = {'l','o','a','d',0};
  46
  47 typedef struct {
  48     nsIDOMEventListener nsIDOMEventListener_iface;
  49     nsDocumentEventListener *This;
  50 } nsEventListener;
  51
  52 struct nsDocumentEventListener {
  53     nsEventListener blur_listener;
  54     nsEventListener focus_listener;
  55     nsEventListener keypress_listener;
  56     nsEventListener load_listener;
  57     nsEventListener htmlevent_listener;
  58
  59     LONG ref;
  60
  61     HTMLDocumentNode *doc;
  62 };
  63
  64 static LONG release_listener(nsDocumentEventListener *This)
  65 {
  66     LONG ref = InterlockedDecrement(&This->ref);
  67
  68     TRACE("(%p) ref=%d\n", This, ref);
  69
  70     if(!ref)
  71         heap_free(This);
  72
  73     return ref;
  74 }
  75
  76 static inline nsEventListener *impl_from_nsIDOMEventListener(nsIDOMEventListener *iface)
  77 {
  78     return CONTAINING_RECORD(iface, nsEventListener, nsIDOMEventListener_iface);
  79 }
  80
  81 static nsresult NSAPI nsDOMEventListener_QueryInterface(nsIDOMEventListener *iface,
  82         nsIIDRef riid, void **result)
  83 {
  84     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
  85
  86     *result = NULL;
  87
  88     if(IsEqualGUID(&IID_nsISupports, riid)) {
  89         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
  90         *result = &This->nsIDOMEventListener_iface;
  91     }else if(IsEqualGUID(&IID_nsIDOMEventListener, riid)) {
  92         TRACE("(%p)->(IID_nsIDOMEventListener %p)\n", This, result);
  93         *result = &This->nsIDOMEventListener_iface;
  94     }
  95
  96     if(*result) {
  97         nsIDOMEventListener_AddRef(&This->nsIDOMEventListener_iface);
  98         return NS_OK;
  99     }
 100
 101     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 102     return NS_NOINTERFACE;
 103 }
 104
 105 static nsrefcnt NSAPI nsDOMEventListener_AddRef(nsIDOMEventListener *iface)
 106 {
 107     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 108     LONG ref = InterlockedIncrement(&This->This->ref);
 109
 110     TRACE("(%p) ref=%d\n", This->This, ref);
 111
 112     return ref;
 113 }
 114
 115 static nsrefcnt NSAPI nsDOMEventListener_Release(nsIDOMEventListener *iface)
 116 {
 117     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 118
 119     return release_listener(This->This);
 120 }
 121
 122 static BOOL is_doc_child_focus(NSContainer *nscontainer)
 123 {
 124     HWND hwnd;
 125
 126     for(hwnd = GetFocus(); hwnd && hwnd != nscontainer->hwnd; hwnd = GetParent(hwnd));
 127
 128     return hwnd != NULL;
 129 }
 130
 131 static nsresult NSAPI handle_blur(nsIDOMEventListener *iface, nsIDOMEvent *event)
 132 {
 133     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 134     HTMLDocumentNode *doc = This->This->doc;
 135     HTMLDocumentObj *doc_obj;
 136
 137     TRACE("(%p)\n", doc);
 138
 139     if(!doc || !doc->basedoc.doc_obj)
 140         return NS_ERROR_FAILURE;
 141     doc_obj = doc->basedoc.doc_obj;
 142
 143     if(doc_obj->focus && !is_doc_child_focus(doc_obj->nscontainer)) {
 144         doc_obj->focus = FALSE;
 145         notif_focus(doc_obj);
 146     }
 147
 148     return NS_OK;
 149 }
 150
 151 static nsresult NSAPI handle_focus(nsIDOMEventListener *iface, nsIDOMEvent *event)
 152 {
 153     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 154     HTMLDocumentNode *doc = This->This->doc;
 155     HTMLDocumentObj *doc_obj;
 156
 157     TRACE("(%p)\n", doc);
 158
 159     if(!doc)
 160         return NS_ERROR_FAILURE;
 161     doc_obj = doc->basedoc.doc_obj;
 162
 163     if(!doc_obj->focus) {
 164         doc_obj->focus = TRUE;
 165         notif_focus(doc_obj);
 166     }
 167
 168     return NS_OK;
 169 }
 170
 171 static nsresult NSAPI handle_keypress(nsIDOMEventListener *iface,
 172         nsIDOMEvent *event)
 173 {
 174     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 175     HTMLDocumentNode *doc = This->This->doc;
 176     HTMLDocumentObj *doc_obj;
 177
 178     if(!doc)
 179         return NS_ERROR_FAILURE;
 180     doc_obj = doc->basedoc.doc_obj;
 181
 182     TRACE("(%p)->(%p)\n", doc, event);
 183
 184     update_doc(&doc_obj->basedoc, UPDATE_UI);
 185     if(doc_obj->usermode == EDITMODE)
 186         handle_edit_event(&doc_obj->basedoc, event);
 187
 188     return NS_OK;
 189 }
 190
 191 static void handle_docobj_load(HTMLDocumentObj *doc)
 192 {
 193     IOleCommandTarget *olecmd = NULL;
 194     HRESULT hres;
 195
 196     if(doc->nscontainer->editor_controller) {
 197         nsIController_Release(doc->nscontainer->editor_controller);
 198         doc->nscontainer->editor_controller = NULL;
 199     }
 200
 201     if(doc->usermode == EDITMODE)
 202         handle_edit_load(&doc->basedoc);
 203
 204     if(doc->client) {
 205         hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 206         if(FAILED(hres))
 207             olecmd = NULL;
 208     }
 209
 210     if(doc->download_state) {
 211         if(olecmd) {
 212             VARIANT progress;
 213
 214             V_VT(&progress) = VT_I4;
 215             V_I4(&progress) = 0;
 216             IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_SETPROGRESSPOS,
 217                     OLECMDEXECOPT_DONTPROMPTUSER, &progress, NULL);
 218         }
 219
 220         set_download_state(doc, 0);
 221     }
 222
 223     if(olecmd) {
 224         IOleCommandTarget_Exec(olecmd, &CGID_ShellDocView, 103, 0, NULL, NULL);
 225         IOleCommandTarget_Exec(olecmd, &CGID_MSHTML, IDM_PARSECOMPLETE, 0, NULL, NULL);
 226         IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_HTTPEQUIV_DONE, 0, NULL, NULL);
 227
 228         IOleCommandTarget_Release(olecmd);
 229     }
 230 }
 231
 232 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 233 {
 234     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 235     HTMLDocumentNode *doc = This->This->doc;
 236     HTMLDocumentObj *doc_obj = NULL;
 237     nsresult nsres = NS_OK;
 238
 239     TRACE("(%p)\n", doc);
 240
 241     if(!doc || !doc->basedoc.window)
 242         return NS_ERROR_FAILURE;
 243     if(doc->basedoc.doc_obj && doc->basedoc.doc_obj->basedoc.doc_node == doc)
 244         doc_obj = doc->basedoc.doc_obj;
 245
 246     connect_scripts(doc->window);
 247
 248     htmldoc_addref(&doc->basedoc);
 249
 250     if(doc_obj)
 251         handle_docobj_load(doc_obj);
 252
 253     set_ready_state(doc->basedoc.window, READYSTATE_COMPLETE);
 254
 255     if(doc_obj) {
 256         if(doc_obj->view_sink)
 257             IAdviseSink_OnViewChange(doc_obj->view_sink, DVASPECT_CONTENT, -1);
 258
 259         set_statustext(doc_obj, IDS_STATUS_DONE, NULL);
 260
 261         update_title(doc_obj);
 262     }
 263
 264     if(doc_obj && doc_obj->usermode!=EDITMODE && doc_obj->doc_object_service
 265        && !(doc->basedoc.window->load_flags & BINDING_REFRESH))
 266         IDocObjectService_FireDocumentComplete(doc_obj->doc_object_service,
 267                 &doc->basedoc.window->base.IHTMLWindow2_iface, 0);
 268
 269     if(doc->nsdoc) {
 270         DOMEvent *load_event;
 271         HRESULT hres;
 272
 273         flush_pending_tasks(doc->basedoc.task_magic);
 274
 275         hres = create_document_event(doc, EVENTID_LOAD, &load_event);
 276         if(SUCCEEDED(hres)) {
 277             dispatch_event(&doc->node.event_target, load_event);
 278             IDOMEvent_Release(&load_event->IDOMEvent_iface);
 279         }
 280
 281         hres = create_event_from_nsevent(event, &load_event);
 282         if(SUCCEEDED(hres)) {
 283             dispatch_event(&doc->window->event_target, load_event);
 284             IDOMEvent_Release(&load_event->IDOMEvent_iface);
 285         }
 286     }else {
 287         ERR("NULL nsdoc\n");
 288         nsres = NS_ERROR_FAILURE;
 289     }
 290
 291     htmldoc_release(&doc->basedoc);
 292     return nsres;
 293 }
 294
 295 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *nsevent)
 296 {
 297     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 298     HTMLDocumentNode *doc = This->This->doc;
 299     nsIDOMEventTarget *event_target;
 300     nsIDOMNode *nsnode;
 301     HTMLDOMNode *node;
 302     DOMEvent *event;
 303     nsresult nsres;
 304     HRESULT hres;
 305
 306     TRACE("%p\n", This->This);
 307
 308     if(!doc) {
 309         WARN("NULL doc\n");
 310         return NS_OK;
 311     }
 312
 313     nsres = nsIDOMEvent_GetTarget(nsevent, &event_target);
 314     if(NS_FAILED(nsres) || !event_target) {
 315         ERR("GetEventTarget failed: %08x\n", nsres);
 316         return NS_OK;
 317     }
 318
 319     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 320     nsIDOMEventTarget_Release(event_target);
 321     if(NS_FAILED(nsres)) {
 322         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 323         return NS_OK;
 324     }
 325
 326     hres = get_node(doc, nsnode, TRUE, &node);
 327     nsIDOMNode_Release(nsnode);
 328     if(FAILED(hres))
 329         return NS_OK;
 330
 331     hres = create_event_from_nsevent(nsevent, &event);
 332     if(FAILED(hres)) {
 333         node_release(node);
 334         return NS_OK;
 335     }
 336
 337     /* If we fine need for more special cases here, we may consider handling it in a more generic way. */
 338     if(event->event_id == EVENTID_FOCUS || event->event_id == EVENTID_BLUR) {
 339         DOMEvent *focus_event;
 340
 341         hres = create_document_event(doc, event->event_id == EVENTID_FOCUS ? EVENTID_FOCUSIN : EVENTID_FOCUSOUT, &focus_event);
 342         if(SUCCEEDED(hres)) {
 343             dispatch_event(&node->event_target, focus_event);
 344             IDOMEvent_Release(&focus_event->IDOMEvent_iface);
 345         }
 346     }
 347
 348     dispatch_event(&node->event_target, event);
 349
 350     IDOMEvent_Release(&event->IDOMEvent_iface);
 351     node_release(node);
 352     return NS_OK;
 353 }
 354
 355 #define EVENTLISTENER_VTBL(handler) \
 356     { \
 357         nsDOMEventListener_QueryInterface, \
 358         nsDOMEventListener_AddRef, \
 359         nsDOMEventListener_Release, \
 360         handler, \
 361     }
 362
 363 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 364 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 365 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 366 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 367 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 368
 369 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 370         nsIDOMEventListener *listener, BOOL capture)
 371 {
 372     nsAString type_str;
 373     nsresult nsres;
 374
 375     nsAString_InitDepend(&type_str, type);
 376     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture, FALSE, 1);
 377     nsAString_Finish(&type_str);
 378     if(NS_FAILED(nsres))
 379         ERR("AddEventTarget failed: %08x\n", nsres);
 380
 381 }
 382
 383 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 384         const nsIDOMEventListenerVtbl *vtbl)
 385 {
 386     This->nsIDOMEventListener_iface.lpVtbl = vtbl;
 387     This->This = listener;
 388 }
 389
 390 void add_nsevent_listener(HTMLDocumentNode *doc, nsIDOMNode *nsnode, LPCWSTR type)
 391 {
 392     nsIDOMEventTarget *target;
 393     nsresult nsres;
 394
 395     if(nsnode)
 396         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMEventTarget, (void**)&target);
 397     else
 398         nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 399     if(NS_FAILED(nsres)) {
 400         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 401         return;
 402     }
 403
 404     init_event(target, type, &doc->nsevent_listener->htmlevent_listener.nsIDOMEventListener_iface,
 405             TRUE);
 406     nsIDOMEventTarget_Release(target);
 407 }
 408
 409 static void detach_nslistener(HTMLDocumentNode *doc, const WCHAR *type, nsEventListener *listener, cpp_bool is_capture)
 410 {
 411     nsIDOMEventTarget *target;
 412     nsAString type_str;
 413     nsresult nsres;
 414
 415     if(!doc->basedoc.window)
 416         return;
 417
 418     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 419     if(NS_FAILED(nsres)) {
 420         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 421         return;
 422     }
 423
 424     nsAString_InitDepend(&type_str, type);
 425     nsres = nsIDOMEventTarget_RemoveEventListener(target, &type_str,
 426             &listener->nsIDOMEventListener_iface, is_capture);
 427     nsAString_Finish(&type_str);
 428     nsIDOMEventTarget_Release(target);
 429     if(NS_FAILED(nsres))
 430         ERR("RemoveEventTarget failed: %08x\n", nsres);
 431 }
 432
 433 void detach_nsevent(HTMLDocumentNode *doc, const WCHAR *type)
 434 {
 435     detach_nslistener(doc, type, &doc->nsevent_listener->htmlevent_listener, TRUE);
 436 }
 437
 438 void release_nsevents(HTMLDocumentNode *doc)
 439 {
 440     nsDocumentEventListener *listener = doc->nsevent_listener;
 441
 442     TRACE("%p %p\n", doc, doc->nsevent_listener);
 443
 444     if(!listener)
 445         return;
 446
 447     detach_nslistener(doc, blurW,     &listener->blur_listener,     TRUE);
 448     detach_nslistener(doc, focusW,    &listener->focus_listener,    TRUE);
 449     detach_nslistener(doc, keypressW, &listener->keypress_listener, FALSE);
 450     detach_nslistener(doc, loadW,     &listener->load_listener,     TRUE);
 451
 452     listener->doc = NULL;
 453     release_listener(listener);
 454     doc->nsevent_listener = NULL;
 455 }
 456
 457 void init_nsevents(HTMLDocumentNode *doc)
 458 {
 459     nsDocumentEventListener *listener;
 460     nsIDOMEventTarget *target;
 461     nsresult nsres;
 462
 463     listener = heap_alloc(sizeof(nsDocumentEventListener));
 464     if(!listener)
 465         return;
 466
 467     TRACE("%p %p\n", doc, listener);
 468
 469     listener->ref = 1;
 470     listener->doc = doc;
 471
 472     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 473     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 474     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 475     init_listener(&listener->load_listener,        listener, &load_vtbl);
 476     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 477
 478     doc->nsevent_listener = listener;
 479
 480     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 481     if(NS_FAILED(nsres)) {
 482         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 483         return;
 484     }
 485
 486     init_event(target, blurW,     &listener->blur_listener.nsIDOMEventListener_iface,     TRUE);
 487     init_event(target, focusW,    &listener->focus_listener.nsIDOMEventListener_iface,    TRUE);
 488     init_event(target, keypressW, &listener->keypress_listener.nsIDOMEventListener_iface, FALSE);
 489     init_event(target, loadW,     &listener->load_listener.nsIDOMEventListener_iface,     TRUE);
 490
 491     nsIDOMEventTarget_Release(target);
 492 }