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 #include "wine/unicode.h"
  34
  35 #include "mshtml_private.h"
  36 #include "htmlevent.h"
  37 #include "resource.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  40
  41 typedef struct {
  42     const nsIDOMEventListenerVtbl      *lpDOMEventListenerVtbl;
  43     nsDocumentEventListener *This;
  44 } nsEventListener;
  45
  46 struct nsDocumentEventListener {
  47     nsEventListener blur_listener;
  48     nsEventListener focus_listener;
  49     nsEventListener keypress_listener;
  50     nsEventListener load_listener;
  51     nsEventListener htmlevent_listener;
  52
  53     LONG ref;
  54
  55     HTMLDocumentNode *doc;
  56 };
  57
  58 static LONG release_listener(nsDocumentEventListener *This)
  59 {
  60     LONG ref = InterlockedDecrement(&This->ref);
  61
  62     TRACE("(%p) ref=%d\n", This, ref);
  63
  64     if(!ref)
  65         heap_free(This);
  66
  67     return ref;
  68 }
  69
  70 #define NSEVENTLIST_THIS(iface) DEFINE_THIS(nsEventListener, DOMEventListener, iface)
  71
  72 static nsresult NSAPI nsDOMEventListener_QueryInterface(nsIDOMEventListener *iface,
  73         nsIIDRef riid, void **result)
  74 {
  75     nsEventListener *This = NSEVENTLIST_THIS(iface);
  76
  77     *result = NULL;
  78
  79     if(IsEqualGUID(&IID_nsISupports, riid)) {
  80         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
  81         *result = NSEVENTLIST(This);
  82     }else if(IsEqualGUID(&IID_nsIDOMEventListener, riid)) {
  83         TRACE("(%p)->(IID_nsIDOMEventListener %p)\n", This, result);
  84         *result = NSEVENTLIST(This);
  85     }
  86
  87     if(*result) {
  88         nsIWebBrowserChrome_AddRef(NSEVENTLIST(This));
  89         return NS_OK;
  90     }
  91
  92     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
  93     return NS_NOINTERFACE;
  94 }
  95
  96 static nsrefcnt NSAPI nsDOMEventListener_AddRef(nsIDOMEventListener *iface)
  97 {
  98     nsDocumentEventListener *This = NSEVENTLIST_THIS(iface)->This;
  99     LONG ref = InterlockedIncrement(&This->ref);
 100
 101     TRACE("(%p) ref=%d\n", This, ref);
 102
 103     return ref;
 104 }
 105
 106 static nsrefcnt NSAPI nsDOMEventListener_Release(nsIDOMEventListener *iface)
 107 {
 108     nsDocumentEventListener *This = NSEVENTLIST_THIS(iface)->This;
 109
 110     return release_listener(This);
 111 }
 112
 113 static BOOL is_doc_child_focus(NSContainer *nscontainer)
 114 {
 115     HWND hwnd;
 116
 117     for(hwnd = GetFocus(); hwnd && hwnd != nscontainer->hwnd; hwnd = GetParent(hwnd));
 118
 119     return hwnd != NULL;
 120 }
 121
 122 static nsresult NSAPI handle_blur(nsIDOMEventListener *iface, nsIDOMEvent *event)
 123 {
 124     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 125     HTMLDocumentObj *doc_obj;
 126
 127     TRACE("(%p)\n", doc);
 128
 129     if(!doc || !doc->basedoc.doc_obj)
 130         return NS_ERROR_FAILURE;
 131     doc_obj = doc->basedoc.doc_obj;
 132
 133     if(doc_obj->focus && !is_doc_child_focus(doc_obj->nscontainer)) {
 134         doc_obj->focus = FALSE;
 135         notif_focus(doc_obj);
 136     }
 137
 138     return NS_OK;
 139 }
 140
 141 static nsresult NSAPI handle_focus(nsIDOMEventListener *iface, nsIDOMEvent *event)
 142 {
 143     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 144     HTMLDocumentObj *doc_obj;
 145
 146     TRACE("(%p)\n", doc);
 147
 148     if(!doc)
 149         return NS_ERROR_FAILURE;
 150     doc_obj = doc->basedoc.doc_obj;
 151
 152     if(!doc_obj->focus) {
 153         doc_obj->focus = TRUE;
 154         notif_focus(doc_obj);
 155     }
 156
 157     return NS_OK;
 158 }
 159
 160 static nsresult NSAPI handle_keypress(nsIDOMEventListener *iface,
 161         nsIDOMEvent *event)
 162 {
 163     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 164     HTMLDocumentObj *doc_obj;
 165
 166     if(!doc)
 167         return NS_ERROR_FAILURE;
 168     doc_obj = doc->basedoc.doc_obj;
 169
 170     TRACE("(%p)->(%p)\n", doc, event);
 171
 172     update_doc(&doc_obj->basedoc, UPDATE_UI);
 173     if(doc_obj->usermode == EDITMODE)
 174         handle_edit_event(&doc_obj->basedoc, event);
 175
 176     return NS_OK;
 177 }
 178
 179 static void handle_docobj_load(HTMLDocumentObj *doc)
 180 {
 181     IOleCommandTarget *olecmd = NULL;
 182     HRESULT hres;
 183
 184     if(!doc->client)
 185         return;
 186
 187     hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 188     if(SUCCEEDED(hres)) {
 189         if(doc->download_state) {
 190             VARIANT state, progress;
 191
 192             V_VT(&progress) = VT_I4;
 193             V_I4(&progress) = 0;
 194             IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_SETPROGRESSPOS,
 195                     OLECMDEXECOPT_DONTPROMPTUSER, &progress, NULL);
 196
 197             V_VT(&state) = VT_I4;
 198             V_I4(&state) = 0;
 199             IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_SETDOWNLOADSTATE,
 200                     OLECMDEXECOPT_DONTPROMPTUSER, &state, NULL);
 201         }
 202
 203         IOleCommandTarget_Exec(olecmd, &CGID_ShellDocView, 103, 0, NULL, NULL);
 204         IOleCommandTarget_Exec(olecmd, &CGID_MSHTML, IDM_PARSECOMPLETE, 0, NULL, NULL);
 205         IOleCommandTarget_Exec(olecmd, NULL, OLECMDID_HTTPEQUIV_DONE, 0, NULL, NULL);
 206
 207         IOleCommandTarget_Release(olecmd);
 208     }
 209     doc->download_state = 0;
 210 }
 211
 212 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 213 {
 214     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 215     HTMLDocumentObj *doc_obj;
 216     nsIDOMHTMLElement *nsbody = NULL;
 217
 218     TRACE("(%p)\n", doc);
 219
 220     if(!doc || !doc->basedoc.window)
 221         return NS_ERROR_FAILURE;
 222     doc_obj = doc->basedoc.doc_obj;
 223
 224     connect_scripts(doc->basedoc.window);
 225
 226     if(doc_obj->nscontainer->editor_controller) {
 227         nsIController_Release(doc_obj->nscontainer->editor_controller);
 228         doc_obj->nscontainer->editor_controller = NULL;
 229     }
 230
 231     if(doc_obj->usermode == EDITMODE)
 232         handle_edit_load(&doc_obj->basedoc);
 233
 234     if(doc == doc_obj->basedoc.doc_node)
 235         handle_docobj_load(doc_obj);
 236
 237     set_ready_state(doc->basedoc.window, READYSTATE_COMPLETE);
 238
 239     if(doc == doc_obj->basedoc.doc_node) {
 240         if(doc_obj->view_sink)
 241             IAdviseSink_OnViewChange(doc_obj->view_sink, DVASPECT_CONTENT, -1);
 242
 243         set_statustext(doc_obj, IDS_STATUS_DONE, NULL);
 244
 245         update_title(doc_obj);
 246     }
 247
 248     if(!doc->nsdoc) {
 249         ERR("NULL nsdoc\n");
 250         return NS_ERROR_FAILURE;
 251     }
 252
 253     nsIDOMHTMLDocument_GetBody(doc->nsdoc, &nsbody);
 254     if(nsbody) {
 255         fire_event(doc, EVENTID_LOAD, TRUE, (nsIDOMNode*)nsbody, event);
 256         nsIDOMHTMLElement_Release(nsbody);
 257     }
 258
 259     return NS_OK;
 260 }
 261
 262 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 263 {
 264     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 265     const PRUnichar *type;
 266     nsIDOMEventTarget *event_target;
 267     nsIDOMNode *nsnode;
 268     nsAString type_str;
 269     eventid_t eid;
 270     nsresult nsres;
 271
 272     TRACE("\n");
 273
 274     nsAString_Init(&type_str, NULL);
 275     nsIDOMEvent_GetType(event, &type_str);
 276     nsAString_GetData(&type_str, &type);
 277     eid = str_to_eid(type);
 278     nsAString_Finish(&type_str);
 279
 280     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 281     if(NS_FAILED(nsres) || !event_target) {
 282         ERR("GetEventTarget failed: %08x\n", nsres);
 283         return NS_OK;
 284     }
 285
 286     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 287     nsIDOMEventTarget_Release(event_target);
 288     if(NS_FAILED(nsres)) {
 289         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 290         return NS_OK;
 291     }
 292
 293     fire_event(doc, eid, TRUE, nsnode, event);
 294
 295     nsIDOMNode_Release(nsnode);
 296
 297     return NS_OK;
 298 }
 299
 300 #undef NSEVENTLIST_THIS
 301
 302 #define EVENTLISTENER_VTBL(handler) \
 303     { \
 304         nsDOMEventListener_QueryInterface, \
 305         nsDOMEventListener_AddRef, \
 306         nsDOMEventListener_Release, \
 307         handler, \
 308     }
 309
 310 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 311 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 312 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 313 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 314 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 315
 316 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 317         nsIDOMEventListener *listener, BOOL capture)
 318 {
 319     nsAString type_str;
 320     nsresult nsres;
 321
 322     nsAString_InitDepend(&type_str, type);
 323     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture);
 324     nsAString_Finish(&type_str);
 325     if(NS_FAILED(nsres))
 326         ERR("AddEventTarget failed: %08x\n", nsres);
 327
 328 }
 329
 330 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 331         const nsIDOMEventListenerVtbl *vtbl)
 332 {
 333     This->lpDOMEventListenerVtbl = vtbl;
 334     This->This = listener;
 335 }
 336
 337 void add_nsevent_listener(HTMLDocumentNode *doc, nsIDOMNode *nsnode, LPCWSTR type)
 338 {
 339     nsIDOMEventTarget *target;
 340     nsresult nsres;
 341
 342     if(nsnode)
 343         nsres = nsIDOMNode_QueryInterface(nsnode, &IID_nsIDOMEventTarget, (void**)&target);
 344     else
 345         nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 346     if(NS_FAILED(nsres)) {
 347         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 348         return;
 349     }
 350
 351     init_event(target, type, NSEVENTLIST(&doc->nsevent_listener->htmlevent_listener), TRUE);
 352     nsIDOMEventTarget_Release(target);
 353 }
 354
 355 void release_nsevents(HTMLDocumentNode *doc)
 356 {
 357     if(doc->nsevent_listener) {
 358         doc->nsevent_listener->doc = NULL;
 359         release_listener(doc->nsevent_listener);
 360         doc->nsevent_listener = NULL;
 361     }
 362 }
 363
 364 void init_nsevents(HTMLDocumentNode *doc)
 365 {
 366     nsDocumentEventListener *listener;
 367     nsIDOMEventTarget *target;
 368     nsresult nsres;
 369
 370     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 371     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 372     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 373     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 374
 375     listener = heap_alloc(sizeof(nsDocumentEventListener));
 376     if(!listener)
 377         return;
 378
 379     listener->ref = 1;
 380     listener->doc = doc;
 381
 382     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 383     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 384     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 385     init_listener(&listener->load_listener,        listener, &load_vtbl);
 386     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 387
 388     doc->nsevent_listener = listener;
 389
 390     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 391     if(NS_FAILED(nsres)) {
 392         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 393         return;
 394     }
 395
 396     init_event(target, wsz_blur,       NSEVENTLIST(&listener->blur_listener),        TRUE);
 397     init_event(target, wsz_focus,      NSEVENTLIST(&listener->focus_listener),       TRUE);
 398     init_event(target, wsz_keypress,   NSEVENTLIST(&listener->keypress_listener),    FALSE);
 399     init_event(target, wsz_load,       NSEVENTLIST(&listener->load_listener),        TRUE);
 400
 401     nsIDOMEventTarget_Release(target);
 402 }