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