845073: Sample to Show and Hide Annotations

How to/Show and Hide Annotations/Show and Hide Annotation/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

How to/Show and Hide Annotations/Show and Hide Annotation/README.md

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+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
+
+The page will reload when you make changes.\
+You may also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can't go back!**
+
+If you aren't satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.
+
+You don't have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting)
+
+### Analyzing the Bundle Size
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size)
+
+### Making a Progressive Web App
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app)
+
+### Advanced Configuration
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration)
+
+### Deployment
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment)
+
+### `npm run build` fails to minify
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

How to/Show and Hide Annotations/Show and Hide Annotation/package.json

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+{
+  "name": "quickstart",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@syncfusion/ej2-react-pdfviewer": "*",
+    "@testing-library/jest-dom": "^5.16.5",
+    "@testing-library/react": "^13.4.0",
+    "@testing-library/user-event": "^13.5.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

How to/Show and Hide Annotations/Show and Hide Annotation/public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+<title>Syncfusion React PDF Viewer</title>
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<meta name="description" content="Essential JS 2 for React Components" />
+<meta name="author" content="Syncfusion" /> 
+</head>
+<body>
+    <div style="margin-top: 50px;"></div>
+    <div id='sample'>
+        <div id='loader'>Loading....</div>
+    </div>
+</body>
+<script>
+ </script>
+</html>

How to/Show and Hide Annotations/Show and Hide Annotation/public/manifest.json

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+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

How to/Show and Hide Annotations/Show and Hide Annotation/public/robots.txt

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+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

How to/Show and Hide Annotations/Show and Hide Annotation/src/index.css

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+@import '../node_modules/@syncfusion/ej2-base/styles/material.css';  
+@import '../node_modules/@syncfusion/ej2-buttons/styles/material.css';
+@import '../node_modules/@syncfusion/ej2-dropdowns/styles/material.css';  
+@import '../node_modules/@syncfusion/ej2-inputs/styles/material.css';  
+@import '../node_modules/@syncfusion/ej2-navigations/styles/material.css';
+@import '../node_modules/@syncfusion/ej2-popups/styles/material.css';
+@import '../node_modules/@syncfusion/ej2-splitbuttons/styles/material.css';
+@import "../node_modules/@syncfusion/ej2-pdfviewer/styles/material.css";

How to/Show and Hide Annotations/Show and Hide Annotation/src/index.js

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+import * as ReactDOM from 'react-dom';
+import * as React from 'react';
+import './index.css';
+import { PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView, Print, TextSelection, Annotation, TextSearch, FormFields, FormDesigner, Inject } from '@syncfusion/ej2-react-pdfviewer';
+
+export function App() {
+  const viewerRef = React.useRef(null);
+  const [annotationsVisible, setAnnotationsVisible] = React.useState(true);
+  const [exportObject, setExportObject] = React.useState(null);
+
+  const toggleAnnotations = () => {
+    if (!viewerRef.current) return;
+
+    const viewer = viewerRef.current;
+
+    if (annotationsVisible) {
+      // Hide annotations by exporting and deleting them
+      viewer.exportAnnotationsAsObject().then((value) => {
+        setExportObject(value);
+
+        const count = viewer.annotationCollection.length;
+        for (let i = 0; i < count; i++) {
+          // Always delete the first item as the collection shrinks
+          viewer.annotationModule.deleteAnnotationById(viewer.annotationCollection[0].annotationId);
+        }
+
+        setAnnotationsVisible(false);
+      });
+    } else {
+      // Restore annotations
+      if (exportObject) {
+        let exportAnnotObject= JSON.parse(exportObject);
+        viewer.importAnnotation(exportAnnotObject);
+      }
+
+      setAnnotationsVisible(true);
+    }
+  };
+
+  return (
+    <div>
+      <div className='control-section'>
+        <button 
+          id="toggleBtn" 
+          onClick={toggleAnnotations}
+        >
+          {annotationsVisible ? 'Hide Annotation' : 'Show Annotation'}
+        </button>
+
+        <PdfViewerComponent 
+          id="container" 
+          ref={viewerRef}
+          serviceUrl='https://localhost:44309/pdfviewer'
+          documentPath='Annotations.pdf'
+          style={{ 'height': '680px' }}
+          documentLoad={documentLoaded}
+        >
+          <Inject services={[Toolbar, Magnification, Navigation, Annotation, LinkAnnotation, BookmarkView, ThumbnailView,
+            Print, TextSelection, TextSearch, FormFields, FormDesigner]} />
+        </PdfViewerComponent>
+      </div>
+    </div>
+  );
+}
+
+function documentLoaded(args) {
+  // You can perform actions after the document is loaded here
+  console.log("Document loaded successfully");
+}
+
+const root = ReactDOM.createRoot(document.getElementById('sample'));
+root.render(<App />);

How to/Show and Hide Annotations/Show and Hide Annotation/src/reportWebVitals.js

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+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

How to/Show and Hide Annotations/Show and Hide Annotation/src/setupTests.js

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';

How to/Show and Hide Annotations/Web Service/ControllerPractice.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32901.215
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControllerPractice", "ControllerPractice\ControllerPractice.csproj", "{14100176-83DC-4CB1-87D4-4D71C9E8F177}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+		Release-Xml|Any CPU = Release-Xml|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Release|Any CPU.Build.0 = Release|Any CPU
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Release-Xml|Any CPU.ActiveCfg = Release|Any CPU
+		{14100176-83DC-4CB1-87D4-4D71C9E8F177}.Release-Xml|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {676A0D7F-7DC9-4AC1-B66A-956820E0B388}
+	EndGlobalSection
+EndGlobal

How to/Show and Hide Annotations/Web Service/ControllerPractice/ControllerPractice.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.13" />
+    <PackageReference Include="Syncfusion.EJ2.AspNet.Core" Version="22.2.10" />
+    <PackageReference Include="Syncfusion.EJ2.PdfViewer.AspNet.Core.Windows" Version="22.2.10" />
+  </ItemGroup>
+
+</Project>

How to/Show and Hide Annotations/Web Service/ControllerPractice/ControllerPractice.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Controller_SelectedScaffolderID>MvcControllerEmptyScaffolder</Controller_SelectedScaffolderID>
+    <Controller_SelectedScaffolderCategoryPath>root/Common/MVC/Controller</Controller_SelectedScaffolderCategoryPath>
+  </PropertyGroup>
+</Project>

How to/Show and Hide Annotations/Web Service/ControllerPractice/Controllers/HomeController.cs

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+using ControllerPractice.Models;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace ControllerPractice.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly ILogger<HomeController> _logger;
+
+        public HomeController(ILogger<HomeController> logger)
+        {
+            _logger = logger;
+        }
+
+        public IActionResult Index()
+        {
+            return View();
+        }
+
+        public IActionResult Privacy()
+        {
+            return View();
+        }
+
+        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+        public IActionResult Error()
+        {
+            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
+        }
+    }
+}