mshtml: Added IHTMLElement2::detachEvent implementation.

dlls/mshtml/htmlelem2.c

@@ -655,8 +655,10 @@ static HRESULT WINAPI HTMLElement2_attachEvent(IHTMLElement2 *iface, BSTR event,
 static HRESULT WINAPI HTMLElement2_detachEvent(IHTMLElement2 *iface, BSTR event, IDispatch *pDisp)
 {
     HTMLElement *This = HTMLELEM2_THIS(iface);
-    FIXME("(%p)->(%s %p)\n", This, debugstr_w(event), pDisp);
-    return E_NOTIMPL;
+
+    TRACE("(%p)->(%s %p)\n", This, debugstr_w(event), pDisp);
+
+    return detach_event(*get_node_event_target(&This->node), &This->node.doc->basedoc, event, pDisp);
 }
 
 static HRESULT WINAPI HTMLElement2_get_readyState(IHTMLElement2 *iface, VARIANT *p)

dlls/mshtml/htmlevent.c

@@ -867,6 +867,9 @@ static void call_event_handlers(HTMLDocumentNode *doc, IHTMLEventObj *event_obj,
         for(cp = cp_container->cp_list; cp; cp = cp->next) {
             if(cp->sinks_size && is_cp_event(cp->data, event_info[eid].dispid)) {
                 for(i=0; i < cp->sinks_size; i++) {
+                    if(!cp->sinks[i].disp)
+                        continue;
+
                     TRACE("cp %s [%d] >>>\n", debugstr_w(event_info[eid].name), i);
                     hres = call_cp_func(cp->sinks[i].disp, event_info[eid].dispid);
                     if(hres == S_OK)
@@ -1128,6 +1131,34 @@ HRESULT attach_event(event_target_t **event_target_ptr, HTMLDocument *doc, BSTR
     return S_OK;
 }
 
+HRESULT detach_event(event_target_t *event_target, HTMLDocument *doc, BSTR name, IDispatch *disp)
+{
+    eventid_t eid;
+    DWORD i = 0;
+
+    if(!event_target)
+        return S_OK;
+
+    eid = attr_to_eid(name);
+    if(eid == EVENTID_LAST) {
+        WARN("Unknown event\n");
+        return S_OK;
+    }
+
+    if(!event_target->event_table[eid])
+        return S_OK;
+
+    while(i < event_target->event_table[eid]->handler_cnt) {
+        if(event_target->event_table[eid]->handlers[i] == disp) {
+            IDispatch_Release(event_target->event_table[eid]->handlers[i]);
+            event_target->event_table[eid]->handlers[i] = NULL;
+        }
+        i++;
+    }
+
+    return S_OK;
+}
+
 void update_cp_events(HTMLWindow *window, cp_static_data_t *cp)
 {
     int i;

dlls/mshtml/htmlevent.h

@@ -46,6 +46,7 @@ void fire_event(HTMLDocumentNode*,eventid_t,nsIDOMNode*,nsIDOMEvent*);
 HRESULT set_event_handler(event_target_t**,HTMLDocumentNode*,eventid_t,VARIANT*);
 HRESULT get_event_handler(event_target_t**,eventid_t,VARIANT*);
 HRESULT attach_event(event_target_t**,HTMLDocument*,BSTR,IDispatch*,VARIANT_BOOL*);
+HRESULT detach_event(event_target_t*,HTMLDocument*,BSTR,IDispatch*);
 HRESULT dispatch_event(HTMLDOMNode*,const WCHAR*,VARIANT*,VARIANT_BOOL*);
 HRESULT call_event(HTMLDOMNode*,eventid_t);
 void update_cp_events(HTMLWindow*,cp_static_data_t*);

dlls/mshtml/tests/events.c

@@ -675,6 +675,20 @@ static void _elem_attach_event(unsigned line, IUnknown *unk, const char *namea,
     ok_(__FILE__,line)(res == VARIANT_TRUE, "attachEvent returned %x\n", res);
 }
 
+#define elem_detach_event(a,b,c) _elem_detach_event(__LINE__,a,b,c)
+static void _elem_detach_event(unsigned line, IUnknown *unk, const char *namea, IDispatch *disp)
+{
+    IHTMLElement2 *elem = _get_elem2_iface(line, unk);
+    BSTR name;
+    HRESULT hres;
+
+    name = a2bstr(namea);
+    hres = IHTMLElement2_detachEvent(elem, name, disp);
+    IHTMLElement2_Release(elem);
+    SysFreeString(name);
+    ok_(__FILE__,line)(hres == S_OK, "detachEvent failed: %08x\n", hres);
+}
+
 static HRESULT WINAPI DispatchEx_QueryInterface(IDispatchEx *iface, REFIID riid, void **ppv)
 {
     *ppv = NULL;
@@ -1228,6 +1242,29 @@ static void test_onclick(IHTMLDocument2 *doc)
 
     unregister_cp((IUnknown*)doc, &DIID_HTMLDocumentEvents, cp_cookie);
 
+    V_VT(&v) = VT_NULL;
+    hres = IHTMLElement_put_onclick(div, v);
+    ok(hres == S_OK, "put_onclick failed: %08x\n", hres);
+
+    hres = IHTMLElement_get_onclick(div, &v);
+    ok(hres == S_OK, "get_onclick failed: %08x\n", hres);
+    ok(V_VT(&v) == VT_NULL, "get_onclick returned vt %d\n", V_VT(&v));
+
+    elem_detach_event((IUnknown*)div, "onclick", (IDispatch*)&div_onclick_disp);
+    elem_detach_event((IUnknown*)div, "onclick", (IDispatch*)&div_onclick_disp);
+    elem_detach_event((IUnknown*)div, "test", (IDispatch*)&div_onclick_disp);
+
+    SET_EXPECT(div_onclick_attached);
+    SET_EXPECT(body_onclick);
+    SET_EXPECT(document_onclick);
+
+    hres = IHTMLElement_click(div);
+    ok(hres == S_OK, "click failed: %08x\n", hres);
+
+    CHECK_CALLED(div_onclick_attached);
+    CHECK_CALLED(body_onclick);
+    CHECK_CALLED(document_onclick);
+
     IHTMLElement_Release(div);
     IHTMLElement_Release(body);
 }