Add a way to disable external links.

src/display/annotation_layer.js

@@ -300,6 +300,7 @@ class LinkAnnotationElement extends AnnotationElement {
       target: (data.newWindow ?
                LinkTarget.BLANK : linkService.externalLinkTarget),
       rel: linkService.externalLinkRel,
+      enabled: linkService.externalLinkEnabled,
     });
 
     if (!data.url) {

src/display/display_utils.js

@@ -344,6 +344,8 @@ const LinkTargetStringMap = [
  *   The default value is `LinkTarget.NONE`.
  * @property {string} rel - (optional) The link relationship.
  *   The default value is `DEFAULT_LINK_REL`.
+ * @property {boolean} enabled - (optional) Whether the link should be enabled.
+ *   The default value is true.
  */
 
 /**
@@ -351,8 +353,17 @@ const LinkTargetStringMap = [
  * @param {HTMLLinkElement} link - The link element.
  * @param {ExternalLinkParameters} params
  */
-function addLinkAttributes(link, { url, target, rel, } = {}) {
+function addLinkAttributes(link, { url, target, rel, enabled = true, } = {}) {
-  link.href = link.title = (url ? removeNullCharacters(url) : '');
+  const urlNullRemoved = (url ? removeNullCharacters(url) : '');
+  if (enabled) {
+    link.href = link.title = urlNullRemoved;
+  } else {
+    link.href = '';
+    link.title = `Disabled: ${urlNullRemoved}`;
+    link.onclick = () => {
+      return false;
+    };
+  }
 
   if (url) {
     const LinkTargetValues = Object.values(LinkTarget);

web/app.js

@@ -668,6 +668,7 @@ let PDFViewerApplication = {
     this.pdfLoadingTask = loadingTask;
 
     loadingTask.onPassword = (updateCallback, reason) => {
+      this.pdfLinkService.externalLinkEnabled = false;
       this.passwordPrompt.setUpdateCallback(updateCallback, reason);
       this.passwordPrompt.open();
     };

web/interfaces.js

@@ -42,6 +42,16 @@ class IPDFLinkService {
    */
   set rotation(value) {}
 
+  /**
+   * @returns {boolean}
+   */
+  get externalLinkEnabled() {}
+
+  /**
+   * @param {boolean} value
+   */
+  set externalLinkEnabled(value) {}
+
   /**
    * @param dest - The PDF destination object.
    */

web/pdf_link_service.js

@@ -35,10 +35,11 @@ class PDFLinkService {
    * @param {PDFLinkServiceOptions} options
    */
   constructor({ eventBus, externalLinkTarget = null,
-                externalLinkRel = null, } = {}) {
+                externalLinkRel = null, externalLinkEnabled = true, } = {}) {
     this.eventBus = eventBus || getGlobalEventBus();
     this.externalLinkTarget = externalLinkTarget;
     this.externalLinkRel = externalLinkRel;
+    this.externalLinkEnabled = externalLinkEnabled;
 
     this.baseUrl = null;
     this.pdfDocument = null;
@@ -423,6 +424,7 @@ class SimpleLinkService {
   constructor() {
     this.externalLinkTarget = null;
     this.externalLinkRel = null;
+    this.externalLinkEnabled = true;
   }
 
   /**

web/pdf_outline_viewer.js

@@ -76,6 +76,7 @@ class PDFOutlineViewer {
         url,
         target: (newWindow ? LinkTarget.BLANK : linkService.externalLinkTarget),
         rel: linkService.externalLinkRel,
+        enabled: linkService.externalLinkEnabled,
       });
       return;
     }