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[api-minor] Remove the textLayerFactory in the viewer

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Please note that this functionality has never really mattered for the Firefox PDF Viewer, the GENERIC viewer, or even the "simpleviewer"/"singlepageviewer" component-examples. Hence, in practice this means that only the "pageviewer" component-example[1] have ever really utilized this.

Using factories to initialize various layers in the viewer, rather than simply invoking the relevant code directly, seems (at least to me) like a somewhat roundabout way of doing things.
Not only does this lead to more code, both to write and maintain, but since many of the layers have common parameters (e.g. an `AnnotationStorage`-instance) there's also some duplication.

Hence this patch, which removes the `textLayerFactory` and instead uses a lookup-function in the `PDFPageView`-class to access the external viewer-properties as necessary.
Note that this should even be an improvement for the "pageviewer" component-example, since most layers will now work by default rather than require manual configuration.

---
[1] In practice we generally suggest using the "simpleviewer", or "singlepageviewer", since it does *most* things out-of-the-box and given that a lot of functionality really require *a viewer* and not just a single page in order to work.
This commit is contained in:
Jonas Jenwald 2022-12-07 00:09:14 +01:00
parent 4c78290028
commit c393148748
5 changed files with 15 additions and 107 deletions
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15
web/pdf_viewer.component.js
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@ -13,10 +13,6 @@
* limitations under the License.
*/
import {
DefaultTextLayerFactory,
DefaultXfaLayerFactory,
} from "./default_factory.js";
import {
LinkTarget,
PDFLinkService,
@ -30,6 +26,7 @@ import {
SpreadMode,
} from "./ui_utils.js";
import { AnnotationLayerBuilder } from "./annotation_layer_builder.js";
import { DefaultXfaLayerFactory } from "./default_factory.js";
import { DownloadManager } from "./download_manager.js";
import { EventBus } from "./event_utils.js";
import { GenericL10n } from "./genericl10n.js";
@ -68,6 +65,16 @@ class DefaultStructTreeLayerFactory {
}
}
class DefaultTextLayerFactory {
constructor() {
throw new Error(
"The `DefaultTextLayerFactory` has been removed, " +
"please use the `textLayerMode` option when initializing " +
"the `PDFPageView`-instance to control TextLayer rendering."
);
}
}
export {
AnnotationLayerBuilder,
DefaultAnnotationLayerFactory,