Add tooltip if any in annotations layer

src/core/annotation.js

@@ -1533,6 +1533,7 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
  this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
  !this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
  this.data.pushButton = this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
+ this.data.isTooltipOnly = false;
 
  if (this.data.checkBox) {
  this._processCheckBox(params);
@@ -1770,11 +1771,13 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
  }
 
  _processPushButton(params) {
- if (!params.dict.has("A")) {
+ if (!params.dict.has("A") && !this.data.alternativeText) {
  warn("Push buttons without action dictionaries are not supported");
  return;
  }
 
+ this.data.isTooltipOnly = !params.dict.has("A");
+
  Catalog.parseDestDictionary({
  destDict: params.dict,
  resultObj: this.data,

src/display/annotation_layer.js

@@ -293,7 +293,8 @@ class LinkAnnotationElement extends AnnotationElement {
  const isRenderable = !!(
  parameters.data.url ||
  parameters.data.dest ||
- parameters.data.action
+ parameters.data.action ||
+ parameters.data.isTooltipOnly
  );
  super(parameters, isRenderable);
  }
@@ -322,8 +323,10 @@ class LinkAnnotationElement extends AnnotationElement {
  });
  } else if (data.action) {
  this._bindNamedAction(link, data.action);
- } else {
+ } else if (data.dest) {
  this._bindLink(link, data.dest);
+ } else {
+ this._bindLink(link, "");
  }
 
  this.container.appendChild(link);
@@ -420,6 +423,10 @@ class WidgetAnnotationElement extends AnnotationElement {
  */
  render() {
  // Show only the container for unsupported field types.
+ if (this.data.alternativeText) {
+ this.container.title = this.data.alternativeText;
+ }
+
  return this.container;
  }
 }
@@ -647,6 +654,11 @@ class PushButtonWidgetAnnotationElement extends LinkAnnotationElement {
  // as performing actions on form fields (resetting, submitting, et cetera).
  const container = super.render();
  container.className = "buttonWidgetAnnotation pushButton";
+
+ if (this.data.alternativeText) {
+ container.title = this.data.alternativeText;
+ }
+
  return container;
  }
 }

test/unit/annotation_spec.js

@@ -2436,6 +2436,49 @@ describe("annotation", function () {
  })
  .catch(done.fail);
  });
+
+ it("should handle push buttons", function (done) {
+ const buttonWidgetRef = Ref.get(124, 0);
+ buttonWidgetDict.set("Ff", AnnotationFieldFlag.PUSHBUTTON);
+ buttonWidgetDict.set("A", "whatever");
+
+ const xref = new XRefMock([
+ { ref: buttonWidgetRef, data: buttonWidgetDict },
+ ]);
+
+ AnnotationFactory.create(
+ xref,
+ buttonWidgetRef,
+ pdfManagerMock,
+ idFactoryMock
+ ).then(({ data }) => {
+ expect(data.annotationType).toEqual(AnnotationType.WIDGET);
+ expect(data.pushButton).toEqual(true);
+ done();
+ }, done.fail);
+ });
+
+ it("should handle push buttons that act as a tooltip only", function (done) {
+ const buttonWidgetRef = Ref.get(124, 0);
+ buttonWidgetDict.set("Ff", AnnotationFieldFlag.PUSHBUTTON);
+ buttonWidgetDict.set("TU", "An alternative text");
+
+ const xref = new XRefMock([
+ { ref: buttonWidgetRef, data: buttonWidgetDict },
+ ]);
+
+ AnnotationFactory.create(
+ xref,
+ buttonWidgetRef,
+ pdfManagerMock,
+ idFactoryMock
+ ).then(({ data }) => {
+ expect(data.annotationType).toEqual(AnnotationType.WIDGET);
+ expect(data.pushButton).toEqual(true);
+ expect(data.alternativeText).toEqual("An alternative text");
+ done();
+ }, done.fail);
+ });
  });
 
  describe("ChoiceWidgetAnnotation", function () {