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     task_t *task;
 135
 136     TRACE("(%p)\n", This);
 137
 138     if(!This->doc)
 139         return NS_OK;
 140
 141     update_nsdocument(This->doc);
 142     connect_scripts(This->doc);
 143
 144     if(This->editor_controller) {
 145         nsIController_Release(This->editor_controller);
 146         This->editor_controller = NULL;
 147     }
 148
 149     if(This->doc->usermode == EDITMODE)
 150         handle_edit_load(This->doc);
 151
 152     task = heap_alloc(sizeof(task_t));
 153
 154     task->doc = This->doc;
 155     task->task_id = TASK_PARSECOMPLETE;
 156     task->next = NULL;
 157
 158     /*
 159      * This should be done in the worker thread that parses HTML,
 160      * but we don't have such thread (Gecko parses HTML for us).
 161      */
 162     push_task(task);
 163
 164     if(!This->doc->nsdoc) {
 165         ERR("NULL nsdoc\n");
 166         return NS_ERROR_FAILURE;
 167     }
 168
 169     nsIDOMHTMLDocument_GetBody(This->doc->nsdoc, &nsbody);
 170     if(nsbody) {
 171         fire_event(This->doc, EVENTID_LOAD, (nsIDOMNode*)nsbody);
 172         nsIDOMHTMLElement_Release(nsbody);
 173     }
 174
 175     return NS_OK;
 176 }
 177
 178 static nsresult NSAPI handle_htmlevent(nsIDOMEventListener *iface, nsIDOMEvent *event)
 179 {
 180     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
 181     const PRUnichar *type;
 182     nsIDOMEventTarget *event_target;
 183     nsIDOMNode *nsnode;
 184     nsAString type_str;
 185     eventid_t eid;
 186     nsresult nsres;
 187
 188     nsAString_Init(&type_str, NULL);
 189     nsIDOMEvent_GetType(event, &type_str);
 190     nsAString_GetData(&type_str, &type);
 191     eid = str_to_eid(type);
 192     nsAString_Finish(&type_str);
 193
 194     nsres = nsIDOMEvent_GetTarget(event, &event_target);
 195     if(NS_FAILED(nsres) || !event_target) {
 196         ERR("GetEventTarget failed: %08x\n", nsres);
 197         return NS_OK;
 198     }
 199
 200     nsres = nsIDOMEventTarget_QueryInterface(event_target, &IID_nsIDOMNode, (void**)&nsnode);
 201     nsIDOMEventTarget_Release(event_target);
 202     if(NS_FAILED(nsres)) {
 203         ERR("Could not get nsIDOMNode: %08x\n", nsres);
 204         return NS_OK;
 205     }
 206
 207     fire_event(This->doc, eid, nsnode);
 208
 209     nsIDOMNode_Release(nsnode);
 210
 211     return NS_OK;
 212 }
 213
 214 #undef NSEVENTLIST_THIS
 215
 216 #define EVENTLISTENER_VTBL(handler) \
 217     { \
 218         nsDOMEventListener_QueryInterface, \
 219         nsDOMEventListener_AddRef, \
 220         nsDOMEventListener_Release, \
 221         handler, \
 222     }
 223
 224 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 225 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 226 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 227 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 228 static const nsIDOMEventListenerVtbl htmlevent_vtbl = EVENTLISTENER_VTBL(handle_htmlevent);
 229
 230 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 231         nsIDOMEventListener *listener, BOOL capture)
 232 {
 233     nsAString type_str;
 234     nsresult nsres;
 235
 236     nsAString_Init(&type_str, type);
 237     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture);
 238     nsAString_Finish(&type_str);
 239     if(NS_FAILED(nsres))
 240         ERR("AddEventTarget failed: %08x\n", nsres);
 241
 242 }
 243
 244 static void init_listener(nsEventListener *This, NSContainer *container,
 245         const nsIDOMEventListenerVtbl *vtbl)
 246 {
 247     This->lpDOMEventListenerVtbl = vtbl;
 248     This->This = container;
 249 }
 250
 251 void add_nsevent_listener(NSContainer *container, LPCWSTR type)
 252 {
 253     nsIDOMWindow *dom_window;
 254     nsIDOMEventTarget *target;
 255     nsresult nsres;
 256
 257     nsres = nsIWebBrowser_GetContentDOMWindow(container->webbrowser, &dom_window);
 258     if(NS_FAILED(nsres)) {
 259         ERR("GetContentDOMWindow failed: %08x\n", nsres);
 260         return;
 261     }
 262
 263     nsres = nsIDOMWindow_QueryInterface(dom_window, &IID_nsIDOMEventTarget, (void**)&target);
 264     nsIDOMWindow_Release(dom_window);
 265     if(NS_FAILED(nsres)) {
 266         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 267         return;
 268     }
 269
 270     init_event(target, type, NSEVENTLIST(&container->htmlevent_listener), TRUE);
 271     nsIDOMEventTarget_Release(target);
 272 }
 273
 274 void init_nsevents(NSContainer *This)
 275 {
 276     nsIDOMWindow *dom_window;
 277     nsIDOMEventTarget *target;
 278     nsresult nsres;
 279
 280     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 281     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 282     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 283     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 284
 285     init_listener(&This->blur_listener,        This, &blur_vtbl);
 286     init_listener(&This->focus_listener,       This, &focus_vtbl);
 287     init_listener(&This->keypress_listener,    This, &keypress_vtbl);
 288     init_listener(&This->load_listener,        This, &load_vtbl);
 289     init_listener(&This->htmlevent_listener,   This, &htmlevent_vtbl);
 290
 291     nsres = nsIWebBrowser_GetContentDOMWindow(This->webbrowser, &dom_window);
 292     if(NS_FAILED(nsres)) {
 293         ERR("GetContentDOMWindow failed: %08x\n", nsres);
 294         return;
 295     }
 296
 297     nsres = nsIDOMWindow_QueryInterface(dom_window, &IID_nsIDOMEventTarget, (void**)&target);
 298     nsIDOMWindow_Release(dom_window);
 299     if(NS_FAILED(nsres)) {
 300         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 301         return;
 302     }
 303
 304     init_event(target, wsz_blur,       NSEVENTLIST(&This->blur_listener),        TRUE);
 305     init_event(target, wsz_focus,      NSEVENTLIST(&This->focus_listener),       TRUE);
 306     init_event(target, wsz_keypress,   NSEVENTLIST(&This->keypress_listener),    FALSE);
 307     init_event(target, wsz_load,       NSEVENTLIST(&This->load_listener),        TRUE);
 308
 309     nsIDOMEventTarget_Release(target);
 310 }