Add the possibility to enable/disable the eraser in the pref.

Author: legraina

extensions/chromium/preferences_schema.json

@@ -239,6 +239,11 @@
       "type": "boolean",
       "default": false
     },
+    "enableEraser": {
+      "description": "Enable the eraser to erase annotations like Ink.",
+      "type": "boolean",
+      "default": false
+    },
     "enableOptimizedPartialRendering": {
       "description": "Enable tracking of PDF operations to optimize partial rendering.",
       "type": "boolean",

web/app.js

@@ -649,6 +649,10 @@ const PDFViewerApplication = {
       }
     }
 
+    if (!AppOptions.get("enableEraser")) {
+      appConfig.toolbar?.editorEraserButton?.parentElement.remove();
+    }
+
     if (appConfig.secondaryToolbar) {
       if (AppOptions.get("enableAltText")) {
         appConfig.secondaryToolbar.imageAltTextSettingsButton?.classList.remove(

web/app_options.js

@@ -228,6 +228,11 @@ const defaultOptions = {
     value: true,
     kind: OptionKind.VIEWER,
   },
+  enableEraser: {
+    /** @type {boolean} */
+    value: typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING"),
+    kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
+  },
   enableGuessAltText: {
     /** @type {boolean} */
     value: true,