feat: add Mod-a to select all KaTeX text for math NodeView and fix selectors error

lib/commands/collapse-math-cmd.ts

@@ -47,14 +47,22 @@ export function collapseMathCmd(
 			// set outer selection to be outside of the nodeview
 			let targetPos: number = (dir > 0) ? outerTo : outerFrom;
 
+			// must return focus to the outer view, otherwise no cursor will appear
+			outerView.focus();
+
 			outerView.dispatch(
 				outerState.tr.setSelection(
 					TextSelection.create(outerState.doc, targetPos)
 				)
 			);
 
-			// must return focus to the outer view, otherwise no cursor will appear
-			outerView.focus();
+			//if innerView at the end of outerView, insert new line at end of outerView
+			if (targetPos == outerState.doc.content.size){
+				outerView.dispatch(
+					outerState.tr.insert(targetPos, outerState.schema.nodes.paragraph.create())
+				)
+			}
+
 		}
 
 		return true;

lib/math-nodeview.ts

@@ -1,7 +1,8 @@
 // prosemirror imports
 import { Node as ProseNode } from "prosemirror-model";
-import { EditorState, Transaction, TextSelection, PluginKey } from "prosemirror-state";
+import {EditorState, Transaction, TextSelection, PluginKey, NodeSelection} from "prosemirror-state";
 import { NodeView, EditorView, Decoration } from "prosemirror-view";
+import { history, redo, undo } from 'prosemirror-history'
 import { StepMap } from "prosemirror-transform";
 import { keymap } from "prosemirror-keymap";
 import { newlineInCode, chainCommands, deleteSelection } from "prosemirror-commands";
@@ -259,7 +260,19 @@ export class MathView implements NodeView {
 					"ArrowRight" : collapseMathCmd(this._outerView, +1, true),
 					"ArrowUp"    : collapseMathCmd(this._outerView, -1, true),
 					"ArrowDown"  : collapseMathCmd(this._outerView, +1, true),
-				})]
+					"Mod-a"  : ()=>{
+						this._innerView?.dispatch(this._innerView?.state.tr.setSelection(NodeSelection.create(this._innerView?.state.doc,0)))
+						return true
+					},
+					"Mod-z"  : ()=>{
+						undo(this._innerView?.state!, this._innerView?.dispatch)
+						return true
+					},
+					"Mod-y"  : ()=>{
+						redo(this._innerView?.state!, this._innerView?.dispatch)
+						return true
+					},
+				}),history()]
 			}),
 			dispatchTransaction: this.dispatchInner.bind(this)
 		})

lib/plugins/math-paste-rules.ts

@@ -54,7 +54,7 @@ function texFromMathML_01(root: Element): false|string {
  * <math xmlns="http://www.w3.org/1998/Math/MathML" alttext="...">
  */
 function texFromMathML_02(root: Element): false|string {
-	let match = root.querySelector("math annotation[encoding='application/x-tex'");
+	let match = root.querySelector("math annotation[encoding='application/x-tex']");
 	return (match?.textContent ?? false);
 }
 

package.json

@@ -43,6 +43,6 @@
     "prosemirror-model": "^1.20.0",
     "prosemirror-state": "^1.4.3",
     "prosemirror-transform": "^1.8.0",
-    "prosemirror-view": "^1.33.4"
+    "prosemirror-view": "^1.33.7"
   }
 }

public/prosemirror-math.css

@@ -45,6 +45,8 @@ math-inline .math-render {
 	cursor:pointer;
 }
 
+math-inline.ProseMirror-selectednode { background-color: #eee; }
+
 math-inline .math-src .ProseMirror {
 	display: inline;
 	/* Necessary to fix FireFox bug with contenteditable, https://bugzilla.mozilla.org/show_bug.cgi?id=1252108 */