Auto merge of #11255 - s-baldrick:11158, r=ConnorGBrewster

11158 - add event handlers

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy --faster` does not report any errors
- [X] These changes fix #11158 (github issue number if applicable).

Either:
- [x] There are tests for these changes OR
- [ ] These changes do not require tests because ____

Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process.

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5 files changed, 73 insertions, 2 deletions

diff --git a/components/script/dom/webidls/BeforeUnloadEvent.webidl b/components/script/dom/webidls/BeforeUnloadEvent.webidl
new file mode 100644
index 00000000000..5e4a099725a
--- /dev/null
+++ b/components/script/dom/webidls/BeforeUnloadEvent.webidl
@@ -0,0 +1,11 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*
+ * For more information on this interface please see
+ * https://html.spec.whatwg.org/multipage/#beforeunloadevent
+ */
+
+interface BeforeUnloadEvent : Event {
+  attribute DOMString returnValue;
+};
diff --git a/components/script/dom/webidls/Document.webidl b/components/script/dom/webidls/Document.webidl
index b211fe7be58..b73d563bac7 100644
--- a/components/script/dom/webidls/Document.webidl
+++ b/components/script/dom/webidls/Document.webidl
@@ -138,6 +138,7 @@ partial /*sealed*/ interface Document {
   // also has obsolete members
 };
 Document implements GlobalEventHandlers;
+Document implements DocumentAndElementEventHandlers;
 
 // https://html.spec.whatwg.org/multipage/#Document-partial
 partial interface Document {
diff --git a/components/script/dom/webidls/EventHandler.webidl b/components/script/dom/webidls/EventHandler.webidl
index fa42b757cab..957fc0bd4dd 100644
--- a/components/script/dom/webidls/EventHandler.webidl
+++ b/components/script/dom/webidls/EventHandler.webidl
@@ -20,42 +20,99 @@ callback OnErrorEventHandlerNonNull = any ((Event or DOMString) event, optional
                                                optional any error);
 typedef OnErrorEventHandlerNonNull? OnErrorEventHandler;
 
+[TreatNonObjectAsNull]
+callback OnBeforeUnloadEventHandlerNonNull = DOMString? (Event event);
+typedef OnBeforeUnloadEventHandlerNonNull? OnBeforeUnloadEventHandler;
+
 // https://html.spec.whatwg.org/multipage/#globaleventhandlers
 [NoInterfaceObject]
 interface GlobalEventHandlers {
            attribute EventHandler onabort;
            attribute EventHandler onblur;
+           attribute EventHandler oncancel;
            attribute EventHandler oncanplay;
            attribute EventHandler oncanplaythrough;
            attribute EventHandler onchange;
            attribute EventHandler onclick;
+           attribute EventHandler onclose;
+           attribute EventHandler oncontextmenu;
+           attribute EventHandler oncuechange;
            attribute EventHandler ondblclick;
+           attribute EventHandler ondrag;
+           attribute EventHandler ondragend;
+           attribute EventHandler ondragenter;
+           attribute EventHandler ondragexit;
+           attribute EventHandler ondragleave;
+           attribute EventHandler ondragover;
+           attribute EventHandler ondragstart;
+           attribute EventHandler ondrop;
+           attribute EventHandler ondurationchange;
            attribute EventHandler onemptied;
+           attribute EventHandler onended;
            attribute OnErrorEventHandler onerror;
+           attribute EventHandler onfocus;
            attribute EventHandler oninput;
+           attribute EventHandler oninvalid;
            attribute EventHandler onkeydown;
            attribute EventHandler onkeypress;
            attribute EventHandler onkeyup;
            attribute EventHandler onload;
            attribute EventHandler onloadeddata;
            attribute EventHandler onloadedmetadata;
+           attribute EventHandler onloadstart;
+           attribute EventHandler onmousedown;
+           [LenientThis] attribute EventHandler onmouseenter;
+           [LenientThis] attribute EventHandler onmouseleave;
+           attribute EventHandler onmousemove;
+           attribute EventHandler onmouseout;
            attribute EventHandler onmouseover;
+           attribute EventHandler onmouseup;
+           attribute EventHandler onwheel;
            attribute EventHandler onpause;
            attribute EventHandler onplay;
            attribute EventHandler onplaying;
            attribute EventHandler onprogress;
+           attribute EventHandler onratechange;
            attribute EventHandler onreset;
            attribute EventHandler onresize;
+           attribute EventHandler onscroll;
+           attribute EventHandler onseeked;
+           attribute EventHandler onseeking;
+           attribute EventHandler onselect;
+           attribute EventHandler onshow;
+           attribute EventHandler onstalled;
            attribute EventHandler onsubmit;
            attribute EventHandler onsuspend;
            attribute EventHandler ontimeupdate;
            attribute EventHandler ontoggle;
+           attribute EventHandler onvolumechange;
            attribute EventHandler onwaiting;
 };
 
 // https://html.spec.whatwg.org/multipage/#windoweventhandlers
 [NoInterfaceObject]
 interface WindowEventHandlers {
-           attribute EventHandler onunload;
+           attribute EventHandler onafterprint;
+           attribute EventHandler onbeforeprint;
+           attribute OnBeforeUnloadEventHandler onbeforeunload;
+           attribute EventHandler onhashchange;
+           attribute EventHandler onlanguagechange;
+           attribute EventHandler onmessage;
+           attribute EventHandler onoffline;
+           attribute EventHandler ononline;
+           attribute EventHandler onpagehide;
+           attribute EventHandler onpageshow;
+           attribute EventHandler onpopstate;
+           attribute EventHandler onrejectionhandled;
            attribute EventHandler onstorage;
+           attribute EventHandler onunhandledrejection;
+           attribute EventHandler onunload;
+};
+
+// https://html.spec.whatwg.org/multipage/#documentandelementeventhandlers
+[NoInterfaceObject]
+interface DocumentAndElementEventHandlers {
+          attribute EventHandler oncopy;
+          attribute EventHandler oncut;
+          attribute EventHandler onpaste;
 };
diff --git a/components/script/dom/webidls/HTMLElement.webidl b/components/script/dom/webidls/HTMLElement.webidl
index 9778985dd40..19222109d63 100644
--- a/components/script/dom/webidls/HTMLElement.webidl
+++ b/components/script/dom/webidls/HTMLElement.webidl
@@ -54,5 +54,6 @@ partial interface HTMLElement {
 };
 
 HTMLElement implements GlobalEventHandlers;
+HTMLElement implements DocumentAndElementEventHandlers;
 HTMLElement implements ElementContentEditable;
 HTMLElement implements ElementCSSInlineStyle;
diff --git a/components/script/dom/webidls/HTMLFrameSetElement.webidl b/components/script/dom/webidls/HTMLFrameSetElement.webidl
index f35de93e545..5addd41d253 100644
--- a/components/script/dom/webidls/HTMLFrameSetElement.webidl
+++ b/components/script/dom/webidls/HTMLFrameSetElement.webidl
@@ -7,4 +7,5 @@ interface HTMLFrameSetElement : HTMLElement {
   //         attribute DOMString cols;
   //         attribute DOMString rows;
 };
-//HTMLFrameSetElement implements WindowEventHandlers;
+
+HTMLFrameSetElement implements WindowEventHandlers;