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Export the XFA/StructTree-layers in the viewer components

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While e.g. the `simpleviewer` and `singlepageviewer` examples work, since they're based on the `BaseViewer`-class, the standalone `pageviewer` example currently doesn't support either XFA- or StructTree-layers. This seems like an obvious oversight, which can be easily addressed simply by exporting the necessary functionality through `pdf_viewer.component.js`, similar to the existing Text/Annotation-layers.

While working on, and testing, these changes I happened to notice a number of smaller things that's also fixed in this patch:

 - Ensure that `XfaLayerBuilder.render` always have a *consistent* return type, to prevent possible run-time failures in `PDFPageView`; PR 13908 follow-up.

 - Change the order of the options in the `XfaLayerBuilder`-constructor to agree with the parameter order in the `DefaultXfaLayerFactory.createXfaLayerBuilder`-method.

 - Add a missing `textHighlighterFactory`-option, in the JSDocs for the `PDFPageView`-class.

 - A couple of small tweaks in the `TextLayerBuilder.render`-method: Re-use an existing Array rather than creating a new one, and replace an `if` with optional chaining instead.

*Please note:* For now XFA-support is currently disabled by default, similar to the regular viewer.
This commit is contained in:
Jonas Jenwald 2021-08-28 18:09:39 +02:00
parent 153d058b3a
commit c6d400ed06
6 changed files with 29 additions and 17 deletions
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12
web/pdf_viewer.component.js
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@ -17,10 +17,18 @@ import {
AnnotationLayerBuilder,
DefaultAnnotationLayerFactory,
} from "./annotation_layer_builder.js";
import {
DefaultStructTreeLayerFactory,
StructTreeLayerBuilder,
} from "./struct_tree_layer_builder.js";
import {
DefaultTextLayerFactory,
TextLayerBuilder,
} from "./text_layer_builder.js";
import {
DefaultXfaLayerFactory,
XfaLayerBuilder,
} from "./xfa_layer_builder.js";
import { EventBus, ProgressBar } from "./ui_utils.js";
import { PDFLinkService, SimpleLinkService } from "./pdf_link_service.js";
import { DownloadManager } from "./download_manager.js";
@ -41,7 +49,9 @@ const pdfjsBuild = PDFJSDev.eval("BUNDLE_BUILD");
export {
AnnotationLayerBuilder,
DefaultAnnotationLayerFactory,
DefaultStructTreeLayerFactory,
DefaultTextLayerFactory,
DefaultXfaLayerFactory,
DownloadManager,
EventBus,
GenericL10n,
@ -55,5 +65,7 @@ export {
PDFViewer,
ProgressBar,
SimpleLinkService,
StructTreeLayerBuilder,
TextLayerBuilder,
XfaLayerBuilder,
};