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     nsIDOMHTMLElement *nsbody = NULL;
 237     HTMLDocumentObj *doc_obj = NULL;
 238     nsresult nsres = NS_OK;
 239
 240     TRACE("(%p)\n", doc);
 241
 242     if(!doc || !doc->basedoc.window)
 243         return NS_ERROR_FAILURE;
 244     if(doc->basedoc.doc_obj && doc->basedoc.doc_obj->basedoc.doc_node == doc)
 245         doc_obj = doc->basedoc.doc_obj;
 246
 247     connect_scripts(doc->window);
 248
 249     htmldoc_addref(&doc->basedoc);
 250
 251     if(doc_obj)
 252         handle_docobj_load(doc_obj);
 253
 254     set_ready_state(doc->basedoc.window, READYSTATE_COMPLETE);
 255
 256     if(doc_obj) {
 257         if(doc_obj->view_sink)
 258             IAdviseSink_OnViewChange(doc_obj->view_sink, DVASPECT_CONTENT, -1);
 259
 260         set_statustext(doc_obj, IDS_STATUS_DONE, NULL);
 261
 262         update_title(doc_obj);
 263     }
 264
 265     if(doc_obj && doc_obj->usermode!=EDITMODE && doc_obj->doc_object_service
 266        && !(doc->basedoc.window->load_flags & BINDING_REFRESH))
 267         IDocObjectService_FireDocumentComplete(doc_obj->doc_object_service,
 268                 &doc->basedoc.window->base.IHTMLWindow2_iface, 0);
 269
 270     if(doc->nsdoc) {
 271         nsIDOMHTMLDocument_GetBody(doc->nsdoc, &nsbody);
 272         if(nsbody) {
 273             fire_event(doc, EVENTID_LOAD, TRUE, (nsIDOMNode*)nsbody, event, (IDispatch*)&doc->window->base.IDispatchEx_iface);
 274             nsIDOMHTMLElement_Release(nsbody);
 275         }
 276     }else {
 277         ERR("NULL nsdoc\n");
 278         nsres = NS_ERROR_FAILURE;
 279     }
 280
 281     htmldoc_release(&doc->basedoc);
 282     return nsres;
 283 }
 284
 285 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 286 {
 287     nsEventListener *This = impl_from_nsIDOMEventListener(iface);
 288     HTMLDocumentNode *doc = This->This->doc;
 289     const PRUnichar *type;
 290     nsIDOMEventTarget *event_target;
 291     nsIDOMNode *nsnode;
 292     nsAString type_str;
 293     eventid_t eid;
 294     nsresult nsres;
 295
 296     TRACE("%p\n", This->This);
 297
 298     if(!doc) {
 299         WARN("NULL doc\n");
 300         return NS_OK;
 301     }
 302
 303     nsAString_Init(&type_str, NULL);
 304     nsIDOMEvent_GetType(event, &type_str);
 305     nsAString_GetData(&type_str, &type);
 306     eid = str_to_eid(type);
 307     nsAString_Finish(&type_str);
 308
 309     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 310     if(NS_FAILED(nsres) || !event_target) {
 311         ERR("GetEventTarget failed: %08x\n", nsres);
 312         return NS_OK;
 313     }
 314
 315     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 316     nsIDOMEventTarget_Release(event_target);
 317     if(NS_FAILED(nsres)) {
 318         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 319         return NS_OK;
 320     }
 321
 322     fire_event(doc, eid, TRUE, nsnode, event, NULL);
 323
 324     nsIDOMNode_Release(nsnode);
 325
 326     return NS_OK;
 327 }
 328
 329 #define EVENTLISTENER_VTBL(handler) \
 330     { \
 331         nsDOMEventListener_QueryInterface, \
 332         nsDOMEventListener_AddRef, \
 333         nsDOMEventListener_Release, \
 334         handler, \
 335     }
 336
 337 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 338 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 339 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 340 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 341 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 342
 343 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 344         nsIDOMEventListener *listener, BOOL capture)
 345 {
 346     nsAString type_str;
 347     nsresult nsres;
 348
 349     nsAString_InitDepend(&type_str, type);
 350     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture, FALSE, 1);
 351     nsAString_Finish(&type_str);
 352     if(NS_FAILED(nsres))
 353         ERR("AddEventTarget failed: %08x\n", nsres);
 354
 355 }
 356
 357 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 358         const nsIDOMEventListenerVtbl *vtbl)
 359 {
 360     This->nsIDOMEventListener_iface.lpVtbl = vtbl;
 361     This->This = listener;
 362 }
 363
 364 void add_nsevent_listener(HTMLDocumentNode *doc, nsIDOMNode *nsnode, LPCWSTR type)
 365 {
 366     nsIDOMEventTarget *target;
 367     nsresult nsres;
 368
 369     if(nsnode)
 370         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMEventTarget, (void**)&target);
 371     else
 372         nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 373     if(NS_FAILED(nsres)) {
 374         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 375         return;
 376     }
 377
 378     init_event(target, type, &doc->nsevent_listener->htmlevent_listener.nsIDOMEventListener_iface,
 379             TRUE);
 380     nsIDOMEventTarget_Release(target);
 381 }
 382
 383 static void detach_nslistener(HTMLDocumentNode *doc, const WCHAR *type, nsEventListener *listener, cpp_bool is_capture)
 384 {
 385     nsIDOMEventTarget *target;
 386     nsAString type_str;
 387     nsresult nsres;
 388
 389     if(!doc->basedoc.window)
 390         return;
 391
 392     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 393     if(NS_FAILED(nsres)) {
 394         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 395         return;
 396     }
 397
 398     nsAString_InitDepend(&type_str, type);
 399     nsres = nsIDOMEventTarget_RemoveEventListener(target, &type_str,
 400             &listener->nsIDOMEventListener_iface, is_capture);
 401     nsAString_Finish(&type_str);
 402     nsIDOMEventTarget_Release(target);
 403     if(NS_FAILED(nsres))
 404         ERR("RemoveEventTarget failed: %08x\n", nsres);
 405 }
 406
 407 void detach_nsevent(HTMLDocumentNode *doc, const WCHAR *type)
 408 {
 409     detach_nslistener(doc, type, &doc->nsevent_listener->htmlevent_listener, TRUE);
 410 }
 411
 412 void release_nsevents(HTMLDocumentNode *doc)
 413 {
 414     nsDocumentEventListener *listener = doc->nsevent_listener;
 415
 416     TRACE("%p %p\n", doc, doc->nsevent_listener);
 417
 418     if(!listener)
 419         return;
 420
 421     detach_nslistener(doc, blurW,     &listener->blur_listener,     TRUE);
 422     detach_nslistener(doc, focusW,    &listener->focus_listener,    TRUE);
 423     detach_nslistener(doc, keypressW, &listener->keypress_listener, FALSE);
 424     detach_nslistener(doc, loadW,     &listener->load_listener,     TRUE);
 425
 426     listener->doc = NULL;
 427     release_listener(listener);
 428     doc->nsevent_listener = NULL;
 429 }
 430
 431 void init_nsevents(HTMLDocumentNode *doc)
 432 {
 433     nsDocumentEventListener *listener;
 434     nsIDOMEventTarget *target;
 435     nsresult nsres;
 436
 437     listener = heap_alloc(sizeof(nsDocumentEventListener));
 438     if(!listener)
 439         return;
 440
 441     TRACE("%p %p\n", doc, listener);
 442
 443     listener->ref = 1;
 444     listener->doc = doc;
 445
 446     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 447     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 448     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 449     init_listener(&listener->load_listener,        listener, &load_vtbl);
 450     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 451
 452     doc->nsevent_listener = listener;
 453
 454     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 455     if(NS_FAILED(nsres)) {
 456         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 457         return;
 458     }
 459
 460     init_event(target, blurW,     &listener->blur_listener.nsIDOMEventListener_iface,     TRUE);
 461     init_event(target, focusW,    &listener->focus_listener.nsIDOMEventListener_iface,    TRUE);
 462     init_event(target, keypressW, &listener->keypress_listener.nsIDOMEventListener_iface, FALSE);
 463     init_event(target, loadW,     &listener->load_listener.nsIDOMEventListener_iface,     TRUE);
 464
 465     nsIDOMEventTarget_Release(target);
 466 }