pdf.js/web/xfa_layer_builder.js
Michael Wu c08b4ea30d Fix Viewer API definitions and include in CI
The Viewer API definitions do not compile because of missing imports and
anonymous objects are typed as `Object`. These issues were not caught
during CI because the test project was not compiling anything from the
Viewer API.

As an example of the first problem:

```
/**
 * @implements MyInterface
 */
export class MyClass {
    ...
}
```

will generate a broken definition that doesn’t import MyInterface:

```
/**
 * @implements MyInterface
 */
export class MyClass implements MyInterface {
    ...
}
```

This can be fixed by adding a typedef jsdoc to specify the import:

```
/** @typedef {import("./otherFile").MyInterface} MyInterface */
```

See https://github.com/jsdoc/jsdoc/issues/1537 and
https://github.com/microsoft/TypeScript/issues/22160 for more details.

As an example of the second problem:

```
/**
 * Gets the size of the specified page, converted from PDF units to inches.
 * @param {Object} An Object containing the properties: {Array} `view`,
 *   {number} `userUnit`, and {number} `rotate`.
 */
function getPageSizeInches({ view, userUnit, rotate }) {
    ...
}
```

generates the broken definition:

```
function getPageSizeInches({ view, userUnit, rotate }: Object) {
    ...
}
```

The jsdoc should specify the type of each nested property:

```
/**
 * Gets the size of the specified page, converted from PDF units to inches.
 * @param {Object} options An object containing the properties: {Array} `view`,
 *   {number} `userUnit`, and {number} `rotate`.
 * @param {number[]} options.view
 * @param {number} options.userUnit
 * @param {number} options.rotate
 */
```
2021-08-25 18:45:46 -04:00

137 lines
3.5 KiB
JavaScript

/* Copyright 2021 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/** @typedef {import("./interfaces").IPDFXfaLayerFactory} IPDFXfaLayerFactory */
import { XfaLayer } from "pdfjs-lib";
/**
* @typedef {Object} XfaLayerBuilderOptions
* @property {HTMLDivElement} pageDiv
* @property {PDFPage} pdfPage
* @property {Object} [xfaHtml]
* @property {AnnotationStorage} [annotationStorage]
*/
class XfaLayerBuilder {
/**
* @param {XfaLayerBuilderOptions} options
*/
constructor({ pageDiv, pdfPage, xfaHtml, annotationStorage }) {
this.pageDiv = pageDiv;
this.pdfPage = pdfPage;
this.xfaHtml = xfaHtml;
this.annotationStorage = annotationStorage;
this.div = null;
this._cancelled = false;
}
/**
* @param {PageViewport} viewport
* @param {string} intent (default value is 'display')
* @returns {Promise<Object | void>} A promise that is resolved when rendering
* of the XFA layer is complete. The first rendering will return an object
* with a `textDivs` property that can be used with the TextHighlighter.
*/
render(viewport, intent = "display") {
if (intent === "print") {
const parameters = {
viewport: viewport.clone({ dontFlip: true }),
div: this.div,
xfa: this.xfaHtml,
page: null,
annotationStorage: this.annotationStorage,
intent,
};
// Create an xfa layer div and render the form
const div = document.createElement("div");
this.pageDiv.appendChild(div);
parameters.div = div;
XfaLayer.render(parameters);
return Promise.resolve();
}
// intent === "display"
return this.pdfPage
.getXfa()
.then(xfa => {
if (this._cancelled) {
return Promise.resolve();
}
const parameters = {
viewport: viewport.clone({ dontFlip: true }),
div: this.div,
xfa,
page: this.pdfPage,
annotationStorage: this.annotationStorage,
intent,
};
if (this.div) {
return XfaLayer.update(parameters);
}
// Create an xfa layer div and render the form
this.div = document.createElement("div");
this.pageDiv.appendChild(this.div);
parameters.div = this.div;
return XfaLayer.render(parameters);
})
.catch(error => {
console.error(error);
});
}
cancel() {
this._cancelled = true;
}
hide() {
if (!this.div) {
return;
}
this.div.hidden = true;
}
}
/**
* @implements IPDFXfaLayerFactory
*/
class DefaultXfaLayerFactory {
/**
* @param {HTMLDivElement} pageDiv
* @param {PDFPage} pdfPage
* @param {AnnotationStorage} [annotationStorage]
* @param {Object} [xfaHtml]
*/
createXfaLayerBuilder(
pageDiv,
pdfPage,
annotationStorage = null,
xfaHtml = null
) {
return new XfaLayerBuilder({
pageDiv,
pdfPage,
annotationStorage,
xfaHtml,
});
}
}
export { DefaultXfaLayerFactory, XfaLayerBuilder };