Merge pull request #15648 from Snuffleupagus/issue-12232

Prevent interaction with form elements in PresentationMode (issue 12232)

src/display/annotation_layer.js

@@ -645,6 +645,10 @@ class LinkAnnotationElement extends AnnotationElement {
     return this.container;
   }
 
+  #setInternalLink() {
+    this.container.setAttribute("data-internal-link", "");
+  }
+
   /**
    * Bind internal links to the link element.
    *
@@ -662,7 +666,7 @@ class LinkAnnotationElement extends AnnotationElement {
       return false;
     };
     if (destination || destination === /* isTooltipOnly = */ "") {
-      link.className = "internalLink";
+      this.#setInternalLink();
     }
   }
 
@@ -680,7 +684,7 @@ class LinkAnnotationElement extends AnnotationElement {
       this.linkService.executeNamedAction(action);
       return false;
     };
-    link.className = "internalLink";
+    this.#setInternalLink();
   }
 
   /**
@@ -698,7 +702,7 @@ class LinkAnnotationElement extends AnnotationElement {
       );
       return false;
     };
-    link.className = "internalLink";
+    this.#setInternalLink();
   }
 
   /**
@@ -712,7 +716,7 @@ class LinkAnnotationElement extends AnnotationElement {
       this.linkService.executeSetOCGState(action);
       return false;
     };
-    link.className = "internalLink";
+    this.#setInternalLink();
   }
 
   /**
@@ -750,7 +754,7 @@ class LinkAnnotationElement extends AnnotationElement {
     if (!link.onclick) {
       link.onclick = () => false;
     }
-    link.className = "internalLink";
+    this.#setInternalLink();
   }
 
   _bindResetFormAction(link, resetForm) {
@@ -758,7 +762,7 @@ class LinkAnnotationElement extends AnnotationElement {
     if (!otherClickAction) {
       link.href = this.linkService.getAnchorUrl("");
     }
-    link.className = "internalLink";
+    this.#setInternalLink();
 
     if (!this._fieldObjects) {
       warn(

web/annotation_layer_builder.js

@@ -24,6 +24,7 @@
 
 import { AnnotationLayer } from "pdfjs-lib";
 import { NullL10n } from "./l10n_utils.js";
+import { PresentationModeState } from "./ui_utils.js";
 
 /**
  * @typedef {Object} AnnotationLayerBuilderOptions
@@ -46,6 +47,8 @@ import { NullL10n } from "./l10n_utils.js";
  */
 
 class AnnotationLayerBuilder {
+  #onPresentationModeChanged = null;
+
   /**
    * @param {AnnotationLayerBuilderOptions} options
    */
@@ -82,6 +85,7 @@ class AnnotationLayerBuilder {
 
     this.div = null;
     this._cancelled = false;
+    this._eventBus = linkService.eventBus;
   }
 
   /**
@@ -134,11 +138,34 @@ class AnnotationLayerBuilder {
 
       AnnotationLayer.render(parameters);
       this.l10n.translate(this.div);
+
+      // Ensure that interactive form elements in the annotationLayer are
+      // disabled while PresentationMode is active (see issue 12232).
+      if (this.linkService.isInPresentationMode) {
+        this.#updatePresentationModeState(PresentationModeState.FULLSCREEN);
+      }
+      if (!this.#onPresentationModeChanged) {
+        this.#onPresentationModeChanged = evt => {
+          this.#updatePresentationModeState(evt.state);
+        };
+        this._eventBus?._on(
+          "presentationmodechanged",
+          this.#onPresentationModeChanged
+        );
+      }
     }
   }
 
   cancel() {
     this._cancelled = true;
+
+    if (this.#onPresentationModeChanged) {
+      this._eventBus?._off(
+        "presentationmodechanged",
+        this.#onPresentationModeChanged
+      );
+      this.#onPresentationModeChanged = null;
+    }
   }
 
   hide() {
@@ -147,6 +174,29 @@ class AnnotationLayerBuilder {
     }
     this.div.hidden = true;
   }
+
+  #updatePresentationModeState(state) {
+    if (!this.div) {
+      return;
+    }
+    let disableFormElements = false;
+
+    switch (state) {
+      case PresentationModeState.FULLSCREEN:
+        disableFormElements = true;
+        break;
+      case PresentationModeState.NORMAL:
+        break;
+      default:
+        return;
+    }
+    for (const section of this.div.childNodes) {
+      if (section.hasAttribute("data-internal-link")) {
+        continue;
+      }
+      section.inert = disableFormElements;
+    }
+  }
 }
 
 export { AnnotationLayerBuilder };

web/interfaces.js

@@ -61,6 +61,11 @@ class IPDFLinkService {
    */
   set rotation(value) {}
 
+  /**
+   * @type {boolean}
+   */
+  get isInPresentationMode() {}
+
   /**
    * @type {boolean}
    */

web/pdf_link_service.js

@@ -173,6 +173,13 @@ class PDFLinkService {
     this.pdfViewer.pagesRotation = value;
   }
 
+  /**
+   * @type {boolean}
+   */
+  get isInPresentationMode() {
+    return this.pdfViewer.isInPresentationMode;
+  }
+
   #goToDestinationHelper(rawDest, namedDest = null, explicitDest) {
     // Dest array looks like that: <page-ref> </XYZ|/FitXXX> <args..>
     const destRef = explicitDest[0];
@@ -673,6 +680,13 @@ class SimpleLinkService {
    */
   set rotation(value) {}
 
+  /**
+   * @type {boolean}
+   */
+  get isInPresentationMode() {
+    return false;
+  }
+
   /**
    * @param {string|Array} dest - The named, or explicit, PDF destination.
    */

web/pdf_presentation_mode.js

@@ -224,21 +224,24 @@ class PDFPresentationMode {
       evt.preventDefault();
       return;
     }
-    if (evt.button === 0) {
-      // Enable clicking of links in presentation mode. Note: only links
-      // pointing to destinations in the current PDF document work.
-      const isInternalLink =
-        evt.target.href && evt.target.classList.contains("internalLink");
-      if (!isInternalLink) {
-        // Unless an internal link was clicked, advance one page.
-        evt.preventDefault();
+    if (evt.button !== 0) {
+      return;
+    }
+    // Enable clicking of links in presentation mode. Note: only links
+    // pointing to destinations in the current PDF document work.
+    if (
+      evt.target.href &&
+      evt.target.parentNode?.hasAttribute("data-internal-link")
+    ) {
+      return;
+    }
+    // Unless an internal link was clicked, advance one page.
+    evt.preventDefault();
 
-        if (evt.shiftKey) {
-          this.pdfViewer.previousPage();
-        } else {
-          this.pdfViewer.nextPage();
-        }
-      }
+    if (evt.shiftKey) {
+      this.pdfViewer.previousPage();
+    } else {
+      this.pdfViewer.nextPage();
     }
   }
 

web/viewer.css

@@ -222,8 +222,8 @@ body {
   user-select: none;
 }
 
-.pdfPresentationMode:fullscreen a:not(.internalLink) {
-  display: none;
+.pdfPresentationMode:fullscreen section:not([data-internal-link]) {
+  pointer-events: none;
 }
 
 .pdfPresentationMode:fullscreen .textLayer span {