[PATCH 2/3] mshtml: Implement MediaQueryList's removeListener method.

[Gabriel Ivăncescu]

From: Gabriel Ivăncescu

Signed-off-by: Gabriel Ivăncescu 
---
 dlls/mshtml/omnavigator.c | 17 +++++++++++++++--
 dlls/mshtml/tests/es5.js  | 10 +++++++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/dlls/mshtml/omnavigator.c b/dlls/mshtml/omnavigator.c
index 670dd181bce..1c6d3dc4a74 100644
--- a/dlls/mshtml/omnavigator.c
+++ b/dlls/mshtml/omnavigator.c
@@ -2817,10 +2817,23 @@ static HRESULT WINAPI media_query_list_addListener(IWineMSHTMLMediaQueryList *if
 static HRESULT WINAPI media_query_list_removeListener(IWineMSHTMLMediaQueryList *iface, VARIANT *listener)
 {
     struct media_query_list *media_query_list = impl_from_IWineMSHTMLMediaQueryList(iface);
+    struct media_query_list_listener *entry;

-    FIXME("(%p)->(%s)\n", media_query_list, debugstr_variant(listener));
+    TRACE("(%p)->(%s)\n", media_query_list, debugstr_variant(listener));

-    return E_NOTIMPL;
+    if(V_VT(listener) != VT_DISPATCH || !V_DISPATCH(listener))
+        return S_OK;
+
+    LIST_FOR_EACH_ENTRY(entry, &media_query_list->listeners, struct media_query_list_listener, entry) {
+        if(entry->function == V_DISPATCH(listener)) {
+            list_remove(&entry->entry);
+            IDispatch_Release(entry->function);
+            free(entry);
+            break;
+        }
+    }
+
+    return S_OK;
 }

static const IWineMSHTMLMediaQueryListVtbl media_query_list_vtbl = {
diff --git a/dlls/mshtml/tests/es5.js b/dlls/mshtml/tests/es5.js
index 8bd8d8e7d06..982544f6b84 100644
--- a/dlls/mshtml/tests/es5.js
+++ b/dlls/mshtml/tests/es5.js
@@ -2101,6 +2101,8 @@ async_test("matchMedia", function() {
     ok(!("removeEventListener" in mql), "removeEventListener in MediaQueryList");
     r = mql.addListener(null);
     ok(r === undefined, "addListener with null returned " + r);
+    r = mql.removeListener(null);
+    ok(r === undefined, "removeListener with null returned " + r);
     r = mql.addListener("function() { ok(false, 'string handler called'); }");
     ok(r === undefined, "addListener with string returned " + r);

@@ -2117,7 +2119,9 @@ async_test("matchMedia", function() {
     }
     var tests = [
         [ 20, 20, function() {
-            var r = mql.addListener(handler);
+            var r = mql.removeListener("function() { ok(false, 'string handler called'); }");
+            ok(r === undefined, "removeListener with string returned " + r);
+            r = mql.addListener(handler);
             ok(r === undefined, "addListener with function returned " + r);
         }],
         [ 120, 120, function() {
@@ -2129,8 +2133,12 @@ async_test("matchMedia", function() {
         [ 30, 30, function() {
             ok(event_fired === true, "event not fired after changing from 120x120 to 30x30 view");
             ok(event2_fired === true, "event not fired from second handler after changing from 120x120 to 30x30 view");
+            var r = mql.removeListener(handler);
+            ok(r === undefined, "removeListener with function returned " + r);
         }],
         [ 300, 300, function() {
+            ok(event_fired === false, "removed event handler fired after changing from 30x30 to 300x300 view");
+            ok(event2_fired === true, "event not fired from second handler after changing from 30x30 to 300x300 view");
         }]
     ];