dlls/mshtml/nsevents.c

   1 /*
   2  * Copyright 2007 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
  35 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  36
  37 #define NSEVENTLIST_THIS(iface) DEFINE_THIS(nsEventListener, DOMEventListener, iface)
  38
  39 static nsresult NSAPI nsDOMEventListener_QueryInterface(nsIDOMEventListener *iface,
  40                                                         nsIIDRef riid, nsQIResult result)
  41 {
  42     nsEventListener *This = NSEVENTLIST_THIS(iface);
  43
  44     *result = NULL;
  45
  46     if(IsEqualGUID(&IID_nsISupports, riid)) {
  47         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
  48         *result = NSEVENTLIST(This);
  49     }else if(IsEqualGUID(&IID_nsIDOMEventListener, riid)) {
  50         TRACE("(%p)->(IID_nsIDOMEventListener %p)\n", This, result);
  51         *result = NSEVENTLIST(This);
  52     }
  53
  54     if(*result) {
  55         nsIWebBrowserChrome_AddRef(NSEVENTLIST(This));
  56         return NS_OK;
  57     }
  58
  59     TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
  60     return NS_NOINTERFACE;
  61 }
  62
  63 static nsrefcnt NSAPI nsDOMEventListener_AddRef(nsIDOMEventListener *iface)
  64 {
  65     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
  66     return nsIWebBrowserChrome_AddRef(NSWBCHROME(This));
  67 }
  68
  69 static nsrefcnt NSAPI nsDOMEventListener_Release(nsIDOMEventListener *iface)
  70 {
  71     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
  72     return nsIWebBrowserChrome_Release(NSWBCHROME(This));
  73 }
  74
  75 static BOOL is_doc_child_focus(NSContainer *This)
  76 {
  77     HWND hwnd;
  78
  79     if(!This->doc)
  80         return FALSE;
  81
  82     for(hwnd = GetFocus(); hwnd && hwnd != This->doc->hwnd; hwnd = GetParent(hwnd));
  83
  84     return hwnd == This->doc->hwnd;
  85 }
  86
  87 static nsresult NSAPI handle_blur(nsIDOMEventListener *iface, nsIDOMEvent *event)
  88 {
  89     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
  90
  91     TRACE("(%p)\n", This);
  92
  93     if(This->doc && This->doc->focus && !is_doc_child_focus(This)) {
  94         This->doc->focus = FALSE;
  95         notif_focus(This->doc);
  96     }
  97
  98     return NS_OK;
  99 }
 100
 101 static nsresult NSAPI handle_focus(nsIDOMEventListener *iface, nsIDOMEvent *event)
 102 {
 103     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
 104
 105     TRACE("(%p)\n", This);
 106
 107     if(This->doc && !This->doc->focus) {
 108         This->doc->focus = TRUE;
 109         notif_focus(This->doc);
 110     }
 111
 112     return NS_OK;
 113 }
 114
 115 static nsresult NSAPI handle_keypress(nsIDOMEventListener *iface,
 116         nsIDOMEvent *event)
 117 {
 118     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
 119
 120     TRACE("(%p)->(%p)\n", This, event);
 121
 122     update_doc(This->doc, UPDATE_UI);
 123     if(This->doc->usermode == EDITMODE)
 124         handle_edit_event(This->doc, event);
 125
 126     return NS_OK;
 127 }
 128
 129 static nsresult NSAPI handle_load(nsIDOMEventListener *iface, nsIDOMEvent *event)
 130 {
 131     NSContainer *This = NSEVENTLIST_THIS(iface)->This;
 132     task_t *task;
 133
 134     TRACE("(%p)\n", This);
 135
 136     if(!This->doc)
 137         return NS_OK;
 138
 139     if(This->editor_controller) {
 140         nsIController_Release(This->editor_controller);
 141         This->editor_controller = NULL;
 142     }
 143
 144     if(This->doc->usermode == EDITMODE)
 145         This->editor_controller = get_editor_controller(This);
 146
 147     task = mshtml_alloc(sizeof(task_t));
 148
 149     task->doc = This->doc;
 150     task->task_id = TASK_PARSECOMPLETE;
 151     task->next = NULL;
 152
 153     /*
 154      * This should be done in the worker thread that parses HTML,
 155      * but we don't have such thread (Gecko parses HTML for us).
 156      */
 157     push_task(task);
 158
 159     return NS_OK;
 160 }
 161
 162 #undef NSEVENTLIST_THIS
 163
 164 #define EVENTLISTENER_VTBL(handler) \
 165     { \
 166         nsDOMEventListener_QueryInterface, \
 167         nsDOMEventListener_AddRef, \
 168         nsDOMEventListener_Release, \
 169         handler, \
 170     };
 171
 172 static const nsIDOMEventListenerVtbl blur_vtbl =      EVENTLISTENER_VTBL(handle_blur);
 173 static const nsIDOMEventListenerVtbl focus_vtbl =     EVENTLISTENER_VTBL(handle_focus);
 174 static const nsIDOMEventListenerVtbl keypress_vtbl =  EVENTLISTENER_VTBL(handle_keypress);
 175 static const nsIDOMEventListenerVtbl load_vtbl =      EVENTLISTENER_VTBL(handle_load);
 176
 177 static void init_event(nsIDOMEventTarget *target, const PRUnichar *type,
 178         nsIDOMEventListener *listener, BOOL capture)
 179 {
 180     nsAString type_str;
 181     nsresult nsres;
 182
 183     nsAString_Init(&type_str, type);
 184     nsres = nsIDOMEventTarget_AddEventListener(target, &type_str, listener, capture);
 185     nsAString_Finish(&type_str);
 186     if(NS_FAILED(nsres))
 187         ERR("AddEventTarget failed: %08x\n", nsres);
 188
 189 }
 190
 191 static void init_listener(nsEventListener *This, NSContainer *container,
 192         const nsIDOMEventListenerVtbl *vtbl)
 193 {
 194     This->lpDOMEventListenerVtbl = vtbl;
 195     This->This = container;
 196 }
 197
 198 void init_nsevents(NSContainer *This)
 199 {
 200     nsIDOMWindow *dom_window;
 201     nsIDOMEventTarget *target;
 202     nsresult nsres;
 203
 204     static const PRUnichar wsz_blur[]      = {'b','l','u','r',0};
 205     static const PRUnichar wsz_focus[]     = {'f','o','c','u','s',0};
 206     static const PRUnichar wsz_keypress[]  = {'k','e','y','p','r','e','s','s',0};
 207     static const PRUnichar wsz_load[]      = {'l','o','a','d',0};
 208
 209     init_listener(&This->blur_listener,        This, &blur_vtbl);
 210     init_listener(&This->focus_listener,       This, &focus_vtbl);
 211     init_listener(&This->keypress_listener,    This, &keypress_vtbl);
 212     init_listener(&This->load_listener,        This, &load_vtbl);
 213
 214     nsres = nsIWebBrowser_GetContentDOMWindow(This->webbrowser, &dom_window);
 215     if(NS_FAILED(nsres)) {
 216         ERR("GetContentDOMWindow failed: %08x\n", nsres);
 217         return;
 218     }
 219
 220     nsres = nsIDOMWindow_QueryInterface(dom_window, &IID_nsIDOMEventTarget, (void**)&target);
 221     nsIDOMWindow_Release(dom_window);
 222     if(NS_FAILED(nsres)) {
 223         ERR("Could not get nsIDOMEventTarget interface: %08x\n", nsres);
 224         return;
 225     }
 226
 227     init_event(target, wsz_blur,       NSEVENTLIST(&This->blur_listener),        TRUE);
 228     init_event(target, wsz_focus,      NSEVENTLIST(&This->focus_listener),       TRUE);
 229     init_event(target, wsz_keypress,   NSEVENTLIST(&This->keypress_listener),    FALSE);
 230     init_event(target, wsz_load,       NSEVENTLIST(&This->load_listener),        TRUE);
 231
 232     nsIDOMEventTarget_Release(target);
 233 }