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
  30 #include "wine/debug.h"
  31 #include "wine/unicode.h"
  32
  33 #include "mshtml_private.h"
  34 #include "htmlevent.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  37
  38 typedef struct {
  39     const nsIDOMEventListenerVtbl      *lpDOMEventListenerVtbl;
  40     nsDocumentEventListener *This;
  41 } nsEventListener;
  42
  43 struct nsDocumentEventListener {
  44     nsEventListener blur_listener;
  45     nsEventListener focus_listener;
  46     nsEventListener keypress_listener;
  47     nsEventListener load_listener;
  48     nsEventListener htmlevent_listener;
  49
  50     LONG ref;
  51
  52     HTMLDocumentNode *doc;
  53 };
  54
  55 static LONG release_listener(nsDocumentEventListener *This)
  56 {
  57     LONG ref = InterlockedDecrement(&This->ref);
  58
  59     TRACE("(%p) ref=%d\n", This, ref);
  60
  61     if(!ref)
  62         heap_free(This);
  63
  64     return ref;
  65 }
  66
  67 #define NSEVENTLIST_THIS(iface) DEFINE_THIS(nsEventListener, DOMEventListener, iface)
  68
  69 static nsresult NSAPI nsDOMEventListener_QueryInterface(nsIDOMEventListener *iface,
  70                                                         nsIIDRef riid, nsQIResult result)
  71 {
  72     nsEventListener *This = NSEVENTLIST_THIS(iface);
  73
  74     *result = NULL;
  75
  76     if(IsEqualGUID(&IID_nsISupports, riid)) {
  77         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
  78         *result = NSEVENTLIST(This);
  79     }else if(IsEqualGUID(&IID_nsIDOMEventListener, riid)) {
  80         TRACE("(%p)->(IID_nsIDOMEventListener %p)\n", This, result);
  81         *result = NSEVENTLIST(This);
  82     }
  83
  84     if(*result) {
  85         nsIWebBrowserChrome_AddRef(NSEVENTLIST(This));
  86         return NS_OK;
  87     }
  88
  89     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
  90     return NS_NOINTERFACE;
  91 }
  92
  93 static nsrefcnt NSAPI nsDOMEventListener_AddRef(nsIDOMEventListener *iface)
  94 {
  95     nsDocumentEventListener *This = NSEVENTLIST_THIS(iface)->This;
  96     LONG ref = InterlockedIncrement(&This->ref);
  97
  98     TRACE("(%p) ref=%d\n", This, ref);
  99
 100     return ref;
 101 }
 102
 103 static nsrefcnt NSAPI nsDOMEventListener_Release(nsIDOMEventListener *iface)
 104 {
 105     nsDocumentEventListener *This = NSEVENTLIST_THIS(iface)->This;
 106
 107     return release_listener(This);
 108 }
 109
 110 static BOOL is_doc_child_focus(HTMLDocumentObj *doc)
 111 {
 112     HWND hwnd;
 113
 114     for(hwnd = GetFocus(); hwnd && hwnd != doc->hwnd; hwnd = GetParent(hwnd));
 115
 116     return hwnd != NULL;
 117 }
 118
 119 static nsresult NSAPI handle_blur(nsIDOMEventListener *iface, nsIDOMEvent *event)
 120 {
 121     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 122     HTMLDocumentObj *doc_obj;
 123
 124     TRACE("(%p)\n", doc);
 125
 126     if(!doc)
 127         return NS_ERROR_FAILURE;
 128     doc_obj = doc->basedoc.doc_obj;
 129
 130     if(!doc_obj->nscontainer->reset_focus && doc_obj->focus && !is_doc_child_focus(doc_obj)) {
 131         doc_obj->focus = FALSE;
 132         notif_focus(doc_obj);
 133     }
 134
 135     return NS_OK;
 136 }
 137
 138 static nsresult NSAPI handle_focus(nsIDOMEventListener *iface, nsIDOMEvent *event)
 139 {
 140     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 141     HTMLDocumentObj *doc_obj;
 142
 143     TRACE("(%p)\n", doc);
 144
 145     if(!doc)
 146         return NS_ERROR_FAILURE;
 147     doc_obj = doc->basedoc.doc_obj;
 148
 149     if(!doc_obj->nscontainer->reset_focus && !doc_obj->focus) {
 150         doc_obj->focus = TRUE;
 151         notif_focus(doc_obj);
 152     }
 153
 154     return NS_OK;
 155 }
 156
 157 static nsresult NSAPI handle_keypress(nsIDOMEventListener *iface,
 158         nsIDOMEvent *event)
 159 {
 160     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 161     HTMLDocumentObj *doc_obj;
 162
 163     if(!doc)
 164         return NS_ERROR_FAILURE;
 165     doc_obj = doc->basedoc.doc_obj;
 166
 167     TRACE("(%p)->(%p)\n", doc, event);
 168
 169     update_doc(&doc_obj->basedoc, UPDATE_UI);
 170     if(doc_obj->usermode == EDITMODE)
 171         handle_edit_event(&doc_obj->basedoc, event);
 172
 173     return NS_OK;
 174 }
 175
 176 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 177 {
 178     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 179     HTMLDocumentObj *doc_obj;
 180     nsIDOMHTMLElement *nsbody = NULL;
 181
 182     TRACE("(%p)\n", doc);
 183
 184     if(!doc)
 185         return NS_ERROR_FAILURE;
 186     doc_obj = doc->basedoc.doc_obj;
 187
 188     connect_scripts(doc->basedoc.window);
 189
 190     if(doc_obj->nscontainer->editor_controller) {
 191         nsIController_Release(doc_obj->nscontainer->editor_controller);
 192         doc_obj->nscontainer->editor_controller = NULL;
 193     }
 194
 195     if(doc_obj->usermode == EDITMODE)
 196         handle_edit_load(&doc_obj->basedoc);
 197
 198     if(!doc->nsdoc) {
 199         ERR("NULL nsdoc\n");
 200         return NS_ERROR_FAILURE;
 201     }
 202
 203     nsIDOMHTMLDocument_GetBody(doc->nsdoc, &nsbody);
 204     if(nsbody) {
 205         fire_event(doc, EVENTID_LOAD, (nsIDOMNode*)nsbody, event);
 206         nsIDOMHTMLElement_Release(nsbody);
 207     }
 208
 209     return NS_OK;
 210 }
 211
 212 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 213 {
 214     HTMLDocumentNode *doc = NSEVENTLIST_THIS(iface)->This->doc;
 215     const PRUnichar *type;
 216     nsIDOMEventTarget *event_target;
 217     nsIDOMNode *nsnode;
 218     nsAString type_str;
 219     eventid_t eid;
 220     nsresult nsres;
 221
 222     nsAString_Init(&type_str, NULL);
 223     nsIDOMEvent_GetType(event, &type_str);
 224     nsAString_GetData(&type_str, &type);
 225     eid = str_to_eid(type);
 226     nsAString_Finish(&type_str);
 227
 228     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 229     if(NS_FAILED(nsres) || !event_target) {
 230         ERR("GetEventTarget failed: %08x\n", nsres);
 231         return NS_OK;
 232     }
 233
 234     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 235     nsIDOMEventTarget_Release(event_target);
 236     if(NS_FAILED(nsres)) {
 237         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 238         return NS_OK;
 239     }
 240
 241     fire_event(doc, eid, nsnode, event);
 242
 243     nsIDOMNode_Release(nsnode);
 244
 245     return NS_OK;
 246 }
 247
 248 #undef NSEVENTLIST_THIS
 249
 250 #define EVENTLISTENER_VTBL(handler) \
 251     { \
 252         nsDOMEventListener_QueryInterface, \
 253         nsDOMEventListener_AddRef, \
 254         nsDOMEventListener_Release, \
 255         handler, \
 256     }
 257
 258 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 259 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 260 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 261 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 262 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 263
 264 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 265         nsIDOMEventListener *listener, BOOL capture)
 266 {
 267     nsAString type_str;
 268     nsresult nsres;
 269
 270     nsAString_Init(&type_str, type);
 271     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture);
 272     nsAString_Finish(&type_str);
 273     if(NS_FAILED(nsres))
 274         ERR("AddEventTarget failed: %08x\n", nsres);
 275
 276 }
 277
 278 static void init_listener(nsEventListener *This, nsDocumentEventListener *listener,
 279         const nsIDOMEventListenerVtbl *vtbl)
 280 {
 281     This->lpDOMEventListenerVtbl = vtbl;
 282     This->This = listener;
 283 }
 284
 285 void add_nsevent_listener(HTMLDocumentNode *doc, LPCWSTR type)
 286 {
 287     nsIDOMEventTarget *target;
 288     nsresult nsres;
 289
 290     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 291     if(NS_FAILED(nsres)) {
 292         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 293         return;
 294     }
 295
 296     init_event(target, type, NSEVENTLIST(&doc->nsevent_listener->htmlevent_listener), TRUE);
 297     nsIDOMEventTarget_Release(target);
 298 }
 299
 300 void release_nsevents(HTMLDocumentNode *doc)
 301 {
 302     if(doc->nsevent_listener) {
 303         doc->nsevent_listener->doc = NULL;
 304         release_listener(doc->nsevent_listener);
 305         doc->nsevent_listener = NULL;
 306     }
 307 }
 308
 309 void init_nsevents(HTMLDocumentNode *doc)
 310 {
 311     nsDocumentEventListener *listener;
 312     nsIDOMEventTarget *target;
 313     nsresult nsres;
 314
 315     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 316     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 317     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 318     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 319
 320     listener = heap_alloc(sizeof(nsDocumentEventListener));
 321     if(!listener)
 322         return;
 323
 324     listener->ref = 1;
 325     listener->doc = doc;
 326
 327     init_listener(&listener->blur_listener,        listener, &blur_vtbl);
 328     init_listener(&listener->focus_listener,       listener, &focus_vtbl);
 329     init_listener(&listener->keypress_listener,    listener, &keypress_vtbl);
 330     init_listener(&listener->load_listener,        listener, &load_vtbl);
 331     init_listener(&listener->htmlevent_listener,   listener, &htmlevent_vtbl);
 332
 333     doc->nsevent_listener = listener;
 334
 335     nsres = nsIDOMWindow_QueryInterface(doc->basedoc.window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 336     if(NS_FAILED(nsres)) {
 337         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 338         return;
 339     }
 340
 341     init_event(target, wsz_blur,       NSEVENTLIST(&listener->blur_listener),        TRUE);
 342     init_event(target, wsz_focus,      NSEVENTLIST(&listener->focus_listener),       TRUE);
 343     init_event(target, wsz_keypress,   NSEVENTLIST(&listener->keypress_listener),    FALSE);
 344     init_event(target, wsz_load,       NSEVENTLIST(&listener->load_listener),        TRUE);
 345
 346     nsIDOMEventTarget_Release(target);
 347 }