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->basedoc.doc_obj->hwnd; hwnd = GetParent(hwnd));
  84
  85     return hwnd != NULL;
  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->basedoc.doc_obj->focus && !is_doc_child_focus(This)) {
  95         This->doc->basedoc.doc_obj->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->basedoc, UPDATE_UI);
 124     if(This->doc->usermode == EDITMODE)
 125         handle_edit_event(&This->doc->basedoc, 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     connect_scripts(This->doc->basedoc.window);
 141
 142     if(This->editor_controller) {
 143         nsIController_Release(This->editor_controller);
 144         This->editor_controller = NULL;
 145     }
 146
 147     if(This->doc->usermode == EDITMODE)
 148         handle_edit_load(&This->doc->basedoc);
 149
 150     if(!This->doc->basedoc.doc_node->nsdoc) {
 151         ERR("NULL nsdoc\n");
 152         return NS_ERROR_FAILURE;
 153     }
 154
 155     nsIDOMHTMLDocument_GetBody(This->doc->basedoc.doc_node->nsdoc, &nsbody);
 156     if(nsbody) {
 157         fire_event(This->doc->basedoc.doc_node, EVENTID_LOAD, (nsIDOMNode*)nsbody, event);
 158         nsIDOMHTMLElement_Release(nsbody);
 159     }
 160
 161     return NS_OK;
 162 }
 163
 164 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 165 {
 166     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
 167     const PRUnichar *type;
 168     nsIDOMEventTarget *event_target;
 169     nsIDOMNode *nsnode;
 170     nsAString type_str;
 171     eventid_t eid;
 172     nsresult nsres;
 173
 174     nsAString_Init(&type_str, NULL);
 175     nsIDOMEvent_GetType(event, &type_str);
 176     nsAString_GetData(&type_str, &type);
 177     eid = str_to_eid(type);
 178     nsAString_Finish(&type_str);
 179
 180     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 181     if(NS_FAILED(nsres) || !event_target) {
 182         ERR("GetEventTarget failed: %08x\n", nsres);
 183         return NS_OK;
 184     }
 185
 186     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 187     nsIDOMEventTarget_Release(event_target);
 188     if(NS_FAILED(nsres)) {
 189         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 190         return NS_OK;
 191     }
 192
 193     fire_event(This->doc->basedoc.doc_node, eid, nsnode, event);
 194
 195     nsIDOMNode_Release(nsnode);
 196
 197     return NS_OK;
 198 }
 199
 200 #undef NSEVENTLIST_THIS
 201
 202 #define EVENTLISTENER_VTBL(handler) \
 203     { \
 204         nsDOMEventListener_QueryInterface, \
 205         nsDOMEventListener_AddRef, \
 206         nsDOMEventListener_Release, \
 207         handler, \
 208     }
 209
 210 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 211 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 212 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 213 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 214 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 215
 216 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 217         nsIDOMEventListener *listener, BOOL capture)
 218 {
 219     nsAString type_str;
 220     nsresult nsres;
 221
 222     nsAString_Init(&type_str, type);
 223     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture);
 224     nsAString_Finish(&type_str);
 225     if(NS_FAILED(nsres))
 226         ERR("AddEventTarget failed: %08x\n", nsres);
 227
 228 }
 229
 230 static void init_listener(nsEventListener *This, NSContainer *container,
 231         const nsIDOMEventListenerVtbl *vtbl)
 232 {
 233     This->lpDOMEventListenerVtbl = vtbl;
 234     This->This = container;
 235 }
 236
 237 void add_nsevent_listener(HTMLWindow *window, LPCWSTR type)
 238 {
 239     nsIDOMEventTarget *target;
 240     nsresult nsres;
 241
 242     nsres = nsIDOMWindow_QueryInterface(window->nswindow, &IID_nsIDOMEventTarget, (void**)&target);
 243     if(NS_FAILED(nsres)) {
 244         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 245         return;
 246     }
 247
 248     init_event(target, type, NSEVENTLIST(&window->doc_obj->nscontainer->htmlevent_listener), TRUE);
 249     nsIDOMEventTarget_Release(target);
 250 }
 251
 252 void init_nsevents(NSContainer *This)
 253 {
 254     nsIDOMWindow *dom_window;
 255     nsIDOMEventTarget *target;
 256     nsresult nsres;
 257
 258     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 259     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 260     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 261     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 262
 263     init_listener(&This->blur_listener,        This, &blur_vtbl);
 264     init_listener(&This->focus_listener,       This, &focus_vtbl);
 265     init_listener(&This->keypress_listener,    This, &keypress_vtbl);
 266     init_listener(&This->load_listener,        This, &load_vtbl);
 267     init_listener(&This->htmlevent_listener,   This, &htmlevent_vtbl);
 268
 269     nsres = nsIWebBrowser_GetContentDOMWindow(This->webbrowser, &dom_window);
 270     if(NS_FAILED(nsres)) {
 271         ERR("GetContentDOMWindow failed: %08x\n", nsres);
 272         return;
 273     }
 274
 275     nsres = nsIDOMWindow_QueryInterface(dom_window, &IID_nsIDOMEventTarget, (void**)&target);
 276     nsIDOMWindow_Release(dom_window);
 277     if(NS_FAILED(nsres)) {
 278         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 279         return;
 280     }
 281
 282     init_event(target, wsz_blur,       NSEVENTLIST(&This->blur_listener),        TRUE);
 283     init_event(target, wsz_focus,      NSEVENTLIST(&This->focus_listener),       TRUE);
 284     init_event(target, wsz_keypress,   NSEVENTLIST(&This->keypress_listener),    FALSE);
 285     init_event(target, wsz_load,       NSEVENTLIST(&This->load_listener),        TRUE);
 286
 287     nsIDOMEventTarget_Release(target);
 288 }