pdf.js/src/display/annotation_storage.js
2020-08-02 16:45:37 +02:00

61 lines
1.4 KiB
JavaScript

/* Copyright 2020 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.
*/
/**
* Key/value storage for annotation data in forms.
*/
class AnnotationStorage {
constructor() {
this._storage = Object.create(null);
}
/**
* Get the value for a given key if it exists
* or store and return the default value
*
* @public
* @memberof AnnotationStorage
* @param {string} key
* @param {Object} defaultValue
* @returns {Object}
*/
getOrCreateValue(key, defaultValue) {
if (key in this._storage) {
return this._storage[key];
}
this._storage[key] = defaultValue;
return defaultValue;
}
/**
* Set the value for a given key
*
* @public
* @memberof AnnotationStorage
* @param {string} key
* @param {Object} value
*/
setValue(key, value) {
this._storage[key] = value;
}
getAll() {
return this._storage;
}
}
export { AnnotationStorage };