Add Selection API

baselines/dom.generated.d.ts

@@ -4528,6 +4528,10 @@ interface Document extends Node, NonElementParentNode, DocumentOrShadowRoot, Par
     getElementsByTagNameNS(namespaceURI: "http://www.w3.org/1999/xhtml", localName: string): HTMLCollectionOf<HTMLElement>;
     getElementsByTagNameNS(namespaceURI: "http://www.w3.org/2000/svg", localName: string): HTMLCollectionOf<SVGElement>;
     getElementsByTagNameNS(namespaceURI: string, localName: string): HTMLCollectionOf<Element>;
+    /**
+     * Returns an object representing the current selection of the document that is loaded into the object displaying a webpage.
+     */
+    getSelection(): Selection | null;
     /**
      * Gets a value indicating whether the object currently has focus.
      */
@@ -4583,9 +4587,6 @@ interface Document extends Node, NonElementParentNode, DocumentOrShadowRoot, Par
      * @param content The text and HTML tags to write.
      */
     writeln(...text: string[]): void;
-    /**
-     * Returns an object representing the current selection of the document that is loaded into the object displaying a webpage.
-     */
     addEventListener<K extends keyof DocumentEventMap>(type: K, listener: (this: Document, ev: DocumentEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof DocumentEventMap>(type: K, listener: (this: Document, ev: DocumentEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
@@ -5408,6 +5409,8 @@ interface GlobalEventHandlersEventMap {
     "seeked": Event;
     "seeking": Event;
     "select": Event;
+    "selectionchange": Event;
+    "selectstart": Event;
     "stalled": Event;
     "submit": Event;
     "suspend": Event;
@@ -5655,6 +5658,8 @@ interface GlobalEventHandlers {
      * @param ev The event.
      */
     onselect: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    onselectionchange: ((this: GlobalEventHandlers, ev: Event) => any) | null;
+    onselectstart: ((this: GlobalEventHandlers, ev: Event) => any) | null;
     /**
      * Occurs when the download has stopped.
      * @param ev The event.
@@ -14461,32 +14466,27 @@ declare var SecurityPolicyViolationEvent: {
 
 /** A Selection object represents the range of text selected by the user or the current position of the caret. To obtain a Selection object for examination or modification, call Window.getSelection(). */
 interface Selection {
-    readonly anchorNode: Node;
+    readonly anchorNode: Node | null;
     readonly anchorOffset: number;
-    readonly baseNode: Node;
-    readonly baseOffset: number;
-    readonly extentNode: Node;
-    readonly extentOffset: number;
-    readonly focusNode: Node;
+    readonly focusNode: Node | null;
     readonly focusOffset: number;
     readonly isCollapsed: boolean;
     readonly rangeCount: number;
     readonly type: string;
     addRange(range: Range): void;
-    collapse(parentNode: Node, offset: number): void;
+    collapse(node: Node | null, offset?: number): void;
     collapseToEnd(): void;
     collapseToStart(): void;
-    containsNode(node: Node, partlyContained: boolean): boolean;
+    containsNode(node: Node, allowPartialContainment?: boolean): boolean;
     deleteFromDocument(): void;
     empty(): void;
-    extend(newNode: Node, offset: number): void;
+    extend(node: Node, offset?: number): void;
     getRangeAt(index: number): Range;
     removeAllRanges(): void;
     removeRange(range: Range): void;
-    selectAllChildren(parentNode: Node): void;
-    setBaseAndExtent(baseNode: Node, baseOffset: number, extentNode: Node, extentOffset: number): void;
-    setPosition(parentNode: Node, offset: number): void;
-    toString(): string;
+    selectAllChildren(node: Node): void;
+    setBaseAndExtent(anchorNode: Node, anchorOffset: number, focusNode: Node, focusOffset: number): void;
+    setPosition(node: Node | null, offset?: number): void;
 }
 
 declare var Selection: {
@@ -16979,7 +16979,7 @@ interface Window extends EventTarget, WindowTimers, WindowSessionStorage, Window
     focus(): void;
     getComputedStyle(elt: Element, pseudoElt?: string | null): CSSStyleDeclaration;
     getMatchedCSSRules(elt: Element, pseudoElt?: string | null): CSSRuleList;
-    getSelection(): Selection;
+    getSelection(): Selection | null;
     matchMedia(query: string): MediaQueryList;
     moveBy(x: number, y: number): void;
     moveTo(x: number, y: number): void;
@@ -17855,7 +17855,7 @@ declare function departFocus(navigationReason: NavigationReason, origin: FocusNa
 declare function focus(): void;
 declare function getComputedStyle(elt: Element, pseudoElt?: string | null): CSSStyleDeclaration;
 declare function getMatchedCSSRules(elt: Element, pseudoElt?: string | null): CSSRuleList;
-declare function getSelection(): Selection;
+declare function getSelection(): Selection | null;
 declare function matchMedia(query: string): MediaQueryList;
 declare function moveBy(x: number, y: number): void;
 declare function moveTo(x: number, y: number): void;
@@ -18117,6 +18117,8 @@ declare var onseeking: ((this: Window, ev: Event) => any) | null;
  * @param ev The event.
  */
 declare var onselect: ((this: Window, ev: Event) => any) | null;
+declare var onselectionchange: ((this: Window, ev: Event) => any) | null;
+declare var onselectstart: ((this: Window, ev: Event) => any) | null;
 /**
  * Occurs when the download has stopped.
  * @param ev The event.

inputfiles/idl/Selection.widl

@@ -0,0 +1,38 @@
+interface Selection {
+  readonly attribute Node? anchorNode;
+  readonly attribute unsigned long anchorOffset;
+  readonly attribute Node? focusNode;
+  readonly attribute unsigned long focusOffset;
+  readonly attribute boolean isCollapsed;
+  readonly attribute unsigned long rangeCount;
+  readonly attribute DOMString type;
+  Range getRangeAt(unsigned long index);
+  void addRange(Range range);
+  void removeRange(Range range);
+  void removeAllRanges();
+  void empty();
+  void collapse(Node? node, optional unsigned long offset = 0);
+  void setPosition(Node? node, optional unsigned long offset = 0);
+  void collapseToStart();
+  void collapseToEnd();
+  void extend(Node node, optional unsigned long offset = 0);
+  void setBaseAndExtent(Node anchorNode, unsigned long anchorOffset, Node focusNode, unsigned long focusOffset);
+  void selectAllChildren(Node node);
+  [CEReactions]
+  void deleteFromDocument();
+  boolean containsNode(Node node, optional boolean allowPartialContainment = false);
+  stringifier DOMString ();
+};
+
+partial interface Document {
+  Selection? getSelection();
+};
+
+partial interface Window {
+  Selection? getSelection();
+};
+
+partial interface GlobalEventHandlers {
+  attribute EventHandler onselectstart;
+  attribute EventHandler onselectionchange;
+};

inputfiles/idlSources.json

@@ -218,6 +218,10 @@
         "url": "https://www.w3.org/TR/screen-orientation/",
         "title": "Screen Orientation"
     },
+    {
+        "url": "https://www.w3.org/TR/selection-api/",
+        "title": "Selection"
+    },
     {
         "url": "https://w3c.github.io/ServiceWorker/",
         "title": "Service Workers"