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