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023af46186
This should help reduce the maintenance burden of the code, since you no longer need to remember to update separate code when touching the different page/thumbnail classes.
72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
/* Copyright 2018 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const RenderingStates = {
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INITIAL: 0,
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RUNNING: 1,
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PAUSED: 2,
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FINISHED: 3,
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};
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class RenderableView {
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/**
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* Unique ID for rendering queue.
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* @type {string}
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*/
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renderingId = "";
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/**
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* @type {RenderTask | null}
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*/
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renderTask = null;
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/**
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* @type {function | null}
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*/
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resume = null;
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constructor() {
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if (
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(typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) &&
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this.constructor === RenderableView
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) {
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throw new Error("Cannot initialize RenderableView.");
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}
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}
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/**
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* @type {RenderingStates}
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*/
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get renderingState() {
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throw new Error("Abstract getter `renderingState` accessed");
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}
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/**
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* @param {RenderingStates}
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*/
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set renderingState(state) {
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throw new Error("Abstract setter `renderingState` accessed");
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}
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/**
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* @returns {Promise} Resolved on draw completion.
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*/
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async draw() {
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throw new Error("Not implemented: draw");
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}
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}
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export { RenderableView, RenderingStates };
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