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