From 34dd3dd21762b69fed684f37c741768ec6b904ad Mon Sep 17 00:00:00 2001
From: Jacek Caban <jacek@codeweavers.com>
Date: Thu, 25 Mar 2021 19:28:21 +0100
Subject: [PATCH] mshtml: Support onload handlers in script elements.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/mshtml/script.c              | 24 +++++++++++++++-----
 dlls/mshtml/tests/documentmode.js | 37 +++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/dlls/mshtml/script.c b/dlls/mshtml/script.c
index 8f2c7f598ea..c52c62f56d9 100644
--- a/dlls/mshtml/script.c
+++ b/dlls/mshtml/script.c
@@ -723,12 +723,22 @@ static void dispatch_script_readystatechange_event(HTMLScriptElement *script)
     DOMEvent *event;
     HRESULT hres;
 
-    hres = create_document_event(script->element.node.doc, EVENTID_READYSTATECHANGE, &event);
-    if(FAILED(hres))
-        return;
+    if(script->readystate != READYSTATE_LOADED ||
+       dispex_compat_mode(&script->element.node.event_target.dispex) < COMPAT_MODE_IE10) {
+        hres = create_document_event(script->element.node.doc, EVENTID_READYSTATECHANGE, &event);
+        if(SUCCEEDED(hres)) {
+            dispatch_event(&script->element.node.event_target, event);
+            IDOMEvent_Release(&event->IDOMEvent_iface);
+        }
+    }
 
-    dispatch_event(&script->element.node.event_target, event);
-    IDOMEvent_Release(&event->IDOMEvent_iface);
+    if(script->readystate == READYSTATE_LOADED) {
+        hres = create_document_event(script->element.node.doc, EVENTID_LOAD, &event);
+        if(SUCCEEDED(hres)) {
+            dispatch_event(&script->element.node.event_target, event);
+            IDOMEvent_Release(&event->IDOMEvent_iface);
+        }
+    }
 }
 
 typedef struct {
@@ -758,6 +768,10 @@ static void set_script_elem_readystate(HTMLScriptElement *script_elem, READYSTAT
 {
     script_elem->readystate = readystate;
 
+    if(readystate != READYSTATE_LOADED &&
+       dispex_compat_mode(&script_elem->element.node.event_target.dispex) >= COMPAT_MODE_IE11)
+        return;
+
     if(readystate != READYSTATE_INTERACTIVE) {
         if(!script_elem->element.node.doc->window->parser_callback_cnt) {
             fire_readystatechange_task_t *task;
diff --git a/dlls/mshtml/tests/documentmode.js b/dlls/mshtml/tests/documentmode.js
index d61d3658151..b079042afff 100644
--- a/dlls/mshtml/tests/documentmode.js
+++ b/dlls/mshtml/tests/documentmode.js
@@ -323,3 +323,40 @@ sync_test("conditional_comments", function() {
     test_version(7);
     test_version(8);
 });
+
+var ready_states;
+
+async_test("script_load", function() {
+    var v = document.documentMode;
+    if(v < 9) {
+        next_test();
+        return;
+    }
+
+    var elem = document.createElement("script");
+    ready_states = "";
+
+    elem.onreadystatechange = guard(function() {
+        ok(v < 11, "unexpected onreadystatechange call");
+        ready_states += elem.readyState + ",";
+    });
+
+    elem.onload = guard(function() {
+        switch(v) {
+        case 9:
+            ok(ready_states === "loading,exec,loaded,", "ready_states = " + ready_states);
+            break;
+        case 10:
+            ok(ready_states === "loading,exec,", "ready_states = " + ready_states);
+            break;
+        case 11:
+            ok(ready_states === "exec,", "ready_states = " + ready_states);
+            break;
+        }
+        next_test();
+    });
+
+    document.body.appendChild(elem);
+    elem.src = "jsstream.php?simple";
+    external.writeStream("simple", "ready_states += 'exec,';");
+});