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Toolbar Customization in JavaScript PdfViewer control

The PDF Viewer provides API for user interactions options provided in it’s built-in toolbar. Using this we can create our own User Interface for toolbar actions in application level by hiding the default toolbar. The following steps are used to create the custom toolbar for PDF Viewer,

Step 1: Follow the steps provided in the link to create simple PDF Viewer sample.

Step 2: Now, add an HTML div element to act as the custom toolbar PDF Viewer using the following code.

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link rel="shortcut icon" href="resources/favicon.ico" />
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="/styles/styles.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="node_modules/systemjs/dist/system.src.js" type="text/javascript"></script>
    <script src="system.config.js" type="text/javascript"></script>
</head>
<body>
 <div id="topToolbar" style="top:0px"></div>
        <div id="magnificationToolbar" ></div>
        <div id="pdfViewer" style="height:640px; width:100%;"></div>
        <input type ="file" id="fileUpload" accept=".pdf" style="display:block;visibility:hidden;width:0;height:0;"/>
        <div id='popup'></div>
        <div id='textSearchBox'>
            <div id='searchContainer'>
                <span class="e-input-group e-custom-search-input">
                    <input type="text" id="searchInput" placeholder="Find in document" class="e-input" />
                    <span class="e-input-group-icon e-pv-search-icon" id="searchBtn"></span>
                </span>
                <button id="previousSearch" class="search-button" style="margin-left:5px"></button>
                <button id="nextSearch" class="search-button"></button>
            </div>
            <div id="matchCaseContainer" style="margin-top:8px">
                <input id="matchCase" type="checkbox" />
            </div>
        </div>
</body>
</html>

Step 3: Import and inject the modules used for the custom toolbar,

import {
    PdfViewer, Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView, Print,
    IPageChangeEventArgs, ILoadEventArgs, TextSearch, TextSelection
} from '@syncfusion/ej2-pdfviewer';
import { Toolbar as Tool, TreeView, NodeSelectEventArgs } from '@syncfusion/ej2-navigations';
import { ClickEventArgs, Button, CheckBox, ChangeEventArgs } from '@syncfusion/ej2-buttons';
import { Dialog } from '@syncfusion/ej2-popups';

PdfViewer.Inject(Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView, Print, TextSearch, TextSelection);

Step 4: Hide the default toolbar of PDF Viewer using below code snippet,

  PdfViewer viewer = new PdfViewer({
        enableToolbar: false,
        enableThumbnail: false,
        documentPath: 'Hive_Succinctly.pdf',
        serviceUrl: 'https://ej2services.syncfusion.com/production/web-services/api/pdfviewer'
    });
    viewer.appendTo('#pdfViewer');

Step 5: Add EJ2 Toolbar for perform primary actions like Open, Previous page, Next page, Go to page,Print and Download using the following code snippet,

   Tool toolbarObj = new Tool({
        items: [
            { prefixIcon: 'e-pv-open-document', tooltipText: 'Open', id: 'openButton', click: openDocument.bind(this) },
            { prefixIcon: 'e-pv-bookmark-icon', tooltipText: 'Bookmark', id: 'bookmarkButton', click: bookmarkClicked },
            // tslint:disable-next-line:max-line-length
            { prefixIcon: 'e-pv-previous-page-navigation-icon', id: 'previousPage', tooltipText: 'Previous Page', align: 'Center', click: previousClicked.bind(this) },
            // tslint:disable-next-line:max-line-length
            { prefixIcon: 'e-pv-next-page-navigation-icon', id: 'nextPage', tooltipText: 'Next Page', align: 'Center', click: nextClicked.bind(this) },
            { template: inputTemplate, tooltipText: 'Page Number', align: 'Center' },
            { template: ele, tooltipText: 'Page Number', align: 'Center' },
            { prefixIcon: 'e-pv-search-icon', tooltipText: 'Text Search', align: 'Right', click: searchClicked.bind(this) },
            { prefixIcon: 'e-pv-print-document-icon', tooltipText: 'Print', align: 'Right', click: printClicked.bind(this) },
            { prefixIcon: 'e-pv-download-document-icon', tooltipText: 'Download', align: 'Right', click: downloadClicked.bind(this) }
        ]
    });
    toolbarObj.appendTo('#topToolbar');

Step 6: Add EJ2 Toolbar for perform magnification actions in PDF Viewer using following code snippet,

    let magnificationToolbar: Tool = new Tool({
        items: [
            { prefixIcon: 'e-pv-fit-page-icon', id: 'fitPage', tooltipText: 'Fit to page', click: pageFitClicked.bind(this) },
            { prefixIcon: 'e-pv-zoom-in-icon', id: 'zoomIn', tooltipText: 'Zoom in', click: zoomInClicked.bind(this) },
            { prefixIcon: 'e-pv-zoom-out-icon', id: 'zoomOut', tooltipText: 'Zoom out', click: zoomOutClicked.bind(this) },
        ]
    });
    magnificationToolbar.appendTo('#magnificationToolbar');

Step 7: Add the following style to achieve the custom toolbar styling,

<style>
     #magnificationToolbar {
        background: transparent;
        height: auto;
        min-height: 56px;
        width: 200px;
        border: none;
        position: absolute;
        z-index: 1001;
        top: calc(100% - 110px);
        left: calc(100% - 120px);
        transform: rotate(90deg);
    }

    div#magnificationToolbar.e-toolbar .e-toolbar-items {
        background: transparent;
    }

    #magnificationToolbar.e-toolbar .e-tbar-btn {
        border-radius: 50%;
        min-height: 30px;
        min-width: 30px;
        border: 1px solid #c8c8c8;
        transform: rotate(90deg);
    }

    #topToolbar {
        top: 0px;
        z-index: 1001;
    }

    .e-bookmark-popup {
        height: 300px;
        max-width: 300px;
    }

    .e-text-search-popup {
        height: 104px;
        max-width: 367px;
    }

    .e-text-search-popup .e-footer-content button.e-btn, .e-bookmark-popup .e-footer-content button.e-btn {
        padding: 0;
        border: 0;
    }

    .e-custom-search-input {
        width: 234px;
    }

    .e-text-search-popup .e-footer-content, .e-bookmark-popup .e-footer-content {
        padding: 0;
        height: 0;
    }

    .search-button, .search-button:disabled, .search-button:focus, .search-button:hover  {
        background: transparent;
        box-shadow: none;
        border: 0px;
    }

    #popup .e-dlg-content {
        padding-left: 0;
        padding-bottom: 0;
    }

    .e-pv-bookmarks {
        min-width: 234px;
    }

    .e-pv-current-page-number {
        width: 46px;
        height: 28px;
        text-align: center;
    }

    .material .e-pv-current-page-number {
        border-width: 1px;
    }

    .e-icons {
        font-family: "e-icons";
        font-style: normal;
        font-variant: normal;
        font-weight: normal;
        line-height: 1;
        text-transform: none;
    }

    .e-pv-icon::before {
        font-family: 'e-icons';
    }

    .e-pv-icon-search::before {
        font-family: 'e-icons';
        font-size: 12px;
    }

    .e-pv-download-document-icon::before {
        content: '\e914';
    }

    .e-pv-print-document-icon::before {
        content: '\e917';
    }

    .e-pv-previous-page-navigation-icon::before {
        content: '\e910';
    }

    .e-pv-next-page-navigation-icon::before {
        content: '\e911';
    }

    .e-pv-zoom-out-icon::before {
        content: '\e912';
    }

    .e-pv-zoom-in-icon::before {
        content: '\e91d';
    }
    .e-pv-fit-page-icon::before {
        content: '\e91b';
    }
    .e-pv-bookmark-icon::before {
        content: '\e915';
    }

    .e-pv-text-search-icon::before {
        content: '\e916';
    }

    .e-pv-search-icon::before {
        content: '\e916';
        font-family: 'e-icons';
    }

    .e-pv-previous-search::before {
        content: '\e918';
        font-family: 'e-icons';
    }

    .e-pv-next-search-btn::before {
        content: '\e919';
        font-family: 'e-icons';
    }

    .e-pv-open-document::before {
        content: '\e91c';
        font-family: 'e-icons';
    }

    .e-pv-search-close {
        content: '\e91a';
        font-family: 'e-icons';
    }

    @font-face {
        font-family: "e-icons";
        font-style: normal;
        font-weight: normal;
        src: url(data:application/x-font-ttf;charset=utf-8;base64,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) format('truetype');
    }
</style>

The icons are embedded in the font file used in above code snippet.

Step 8: Add the following scripts for performing user interaction in PDF Viewer in code behind

import {
    PdfViewer, Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView, Print,
    IPageChangeEventArgs, ILoadEventArgs, TextSearch, TextSelection
} from '@syncfusion/ej2-pdfviewer';
import { Toolbar as Tool, TreeView, NodeSelectEventArgs } from '@syncfusion/ej2-navigations';
import { ClickEventArgs, Button, CheckBox, ChangeEventArgs } from '@syncfusion/ej2-buttons';
import { Dialog } from '@syncfusion/ej2-popups';

PdfViewer.Inject(Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView, Print, TextSearch, TextSelection);

/**
 * Default PdfViewer sample
 */

let inputTemplate: string = '<div class=""><input type="text" class="e-input-group e-pv-current-page-number" id="currentPage" /></div>';
let ele: string = '<div class=""><span class="e-pv-total-page-number" id="totalPage">of 0</span></div>';
let isBookmarkOpen: boolean = false;
let isBookmarkClick: boolean = false;
let isTextSearchBoxOpen: boolean = false;
let bookmarkPopup: Dialog;
let textSearchPopup: Dialog;
let toolbarObj: Tool;
let viewer: PdfViewer;
let currentPageBox: HTMLElement;
let searchInput: HTMLElement;
let searchButton: HTMLElement;
let matchCase: boolean = false;

function previousClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.navigation.goToPreviousPage();
}

function hidePopups(): void {
    isBookmarkOpen = false;
    isTextSearchBoxOpen = false;
    bookmarkPopup.hide();
    textSearchPopup.hide();
}

function bookmarkClicked(): void {
    textSearchPopup.hide();
    if (!isBookmarkOpen) {
        let bookmarkDetails: any = viewer.bookmark.getBookmarks();
        if (bookmarkDetails.bookmarks) {
            let bookmarks: any = bookmarkDetails.bookmarks.bookMark;
            let treeObj: TreeView = new TreeView({
                fields:
                {
                    dataSource: bookmarks,
                    id: 'Id',
                    parentID: 'Pid',
                    text: 'Title',
                    hasChildren: 'HasChild',
                }, nodeSelected: nodeClick
            });
            treeObj.appendTo('#bookmarkview');
            bookmarkPopup.show();
            isBookmarkOpen = true;
            isBookmarkClick = true;
        } else {
            toolbarObj.enableItems(document.getElementById('bookmarkButton'), false);
            isBookmarkOpen = false;
        }
    } else {
        if (!isBookmarkClick) {
            bookmarkPopup.show();
            isBookmarkClick = true;
        } else {
            bookmarkPopup.hide();
            isBookmarkClick = false;
        }
    }
}

function nextClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.navigation.goToNextPage();
}

function searchClicked(args: ClickEventArgs): void {
    bookmarkPopup.hide();
    if (!isTextSearchBoxOpen) {
        textSearchPopup.show();
    } else {
        viewer.textSearch.cancelTextSearch();
        textSearchPopup.hide();
    }
    isTextSearchBoxOpen = !isTextSearchBoxOpen;
}

function printClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.print.print();
}

function downloadClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.download();
}

function pageFitClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.magnification.fitToPage();
    updateZoomButtons();
    toolbarObj.enableItems(document.getElementById('fitPage'), false);
}

function zoomInClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.magnification.zoomIn();
    updateZoomButtons();
}

function zoomOutClicked(args: ClickEventArgs): void {
    hidePopups();
    viewer.magnification.zoomOut();
    updateZoomButtons();
}

function onCurrentPageBoxKeypress(event: KeyboardEvent): boolean {
    if ((event.which < 48 || event.which > 57) && event.which !== 8 && event.which !== 13) {
        event.preventDefault();
        return false;
    } else {
        // tslint:disable-next-line:radix
        let currentPageNumber: number = parseInt((currentPageBox as HTMLInputElement).value);
        if (event.which === 13) {
            if (currentPageNumber > 0 && currentPageNumber <= viewer.pageCount) {
                viewer.navigation.goToPage(currentPageNumber);
            } else {
                (currentPageBox as HTMLInputElement).value = viewer.currentPageNumber.toString();
            }
        }
        return true;
    }
}

function onCurrentPageBoxClicked(): void {
    (currentPageBox as HTMLInputElement).select();
    (currentPageBox).focus();
}

function  readFile(args:  any):  void  {
    // tslint:disable-next-line
    let  upoadedFiles:  any  =  args.target.files;
    if  (args.target.files[0]  !==  null) {
        let  uploadedFile:  File  =  upoadedFiles[0];
        if  (uploadedFile) {
            let  reader:  FileReader  =  new  FileReader();
            let filename: string = upoadedFiles[0].name;
            reader.readAsDataURL(uploadedFile);
            // tslint:disable-next-line
            reader.onload  =  (e:  any):  void  =>  {
                let  uploadedFileUrl:  string  =  e.currentTarget.result;
                viewer.load(uploadedFileUrl,  null);
                viewer.fileName = filename;
                (currentPageBox as HTMLInputElement).value = '1';
                document.getElementById('totalPage').textContent = 'of ' + viewer.pageCount;
                document.getElementById('bookmarkview').innerHTML = '';
                isBookmarkOpen = false;
            };
        }
    }
}

function  openDocument(e:  ClickEventArgs):  void  {
    document.getElementById('fileUpload').click();
}

function updatePageNavigation(): void {
    if (viewer.currentPageNumber === 1) {
        toolbarObj.enableItems(document.getElementById('previousPage'), false);
        toolbarObj.enableItems(document.getElementById('nextPage'), true);
    } else if (viewer.currentPageNumber === viewer.pageCount) {
        toolbarObj.enableItems(document.getElementById('previousPage'), true);
        toolbarObj.enableItems(document.getElementById('nextPage'), false);
    } else {
        toolbarObj.enableItems(document.getElementById('previousPage'), true);
        toolbarObj.enableItems(document.getElementById('nextPage'), true);
    }
}

function updateZoomButtons(): void {
    if (viewer.zoomPercentage <= 50) {
        toolbarObj.enableItems(document.getElementById('zoomIn'), true);
        toolbarObj.enableItems(document.getElementById('zoomOut'), false);
        toolbarObj.enableItems(document.getElementById('fitPage'), true);
    } else if (viewer.zoomPercentage >= 400) {
        toolbarObj.enableItems(document.getElementById('zoomIn'), false);
        toolbarObj.enableItems(document.getElementById('zoomOut'), true);
        toolbarObj.enableItems(document.getElementById('fitPage'), true);
    } else {
        toolbarObj.enableItems(document.getElementById('zoomIn'), true);
        toolbarObj.enableItems(document.getElementById('zoomOut'), true);
        toolbarObj.enableItems(document.getElementById('fitPage'), true);
    }
}

function nodeClick(args: NodeSelectEventArgs): boolean {
    let bookmarksDetails: any = viewer.bookmark.getBookmarks();
    let bookmarksDestination: any = bookmarksDetails.bookmarksDestination;
    let bookid: number = Number(args.nodeData.id);
    let pageIndex: number = bookmarksDestination.bookMarkDestination[bookid].PageIndex;
    let Y: number = bookmarksDestination.bookMarkDestination[bookid].Y;
    viewer.bookmark.goToBookmark(pageIndex, Y);
    return false;
}

function searchInputKeypressed(event: KeyboardEvent): void {
    enablePrevButton(true);
    enableNextButton(true);
    if (event.which === 13) {
        initiateTextSearch();
        updateSearchInputIcon(false);
    }
}

function searchClickHandler(): void {
    if (searchButton.classList.contains('e-pv-search-icon')) {
        viewer.textSearch.cancelTextSearch();
        initiateTextSearch();
    } else if (searchButton.classList.contains('e-pv-search-close')) {
        (searchInput as HTMLInputElement).value = '';
        searchInput.focus();
        viewer.textSearch.cancelTextSearch();
    }
}

function initiateTextSearch(): void {
    let searchString: string = (searchInput as HTMLInputElement).value;
    viewer.textSearch.searchText(searchString, matchCase);
}

function previousSearchClicked(): void {
    let searchString: string = (searchInput as HTMLInputElement).value;
    if (searchString) {
        viewer.textSearch.searchPrevious();
    }
}

function nextSearchClicked(): void {
    let searchString: string = (searchInput as HTMLInputElement).value;
    if (searchString) {
        viewer.textSearch.searchNext();
    }
}

function checkBoxChanged(args: ChangeEventArgs): void {
    if (args.checked) {
        matchCase = true;
    } else {
        matchCase = false;
    }
    initiateTextSearch();
}

function enablePrevButton(isEnable: boolean): void {
    let previousSearchButton: HTMLElement = document.getElementById('previousSearch');
    if (isEnable) {
        previousSearchButton.removeAttribute('disabled');
    } else {
        (previousSearchButton as HTMLButtonElement).disabled = true;
    }
}

function enableNextButton(isEnable: boolean): void {
    let nextSearchButton: HTMLElement = document.getElementById('nextSearch');
    if (isEnable) {
        nextSearchButton.removeAttribute('disabled');
    } else {
        (nextSearchButton as HTMLButtonElement).disabled = true;
    }
}

function updateSearchInputIcon(isEnable: boolean): void {
    if (isEnable) {
        searchButton.classList.remove('e-pv-search-close');
        searchButton.classList.add('e-pv-search-icon');
    } else {
        searchButton.classList.remove('e-pv-search-icon');
        searchButton.classList.add('e-pv-search-close');
    }
}


    toolbarObj = new Tool({
        items: [
            { prefixIcon: 'e-pv-open-document', tooltipText: 'Open', id: 'openButton', click: openDocument.bind(this) },
            { prefixIcon: 'e-pv-bookmark-icon', tooltipText: 'Bookmark', id: 'bookmarkButton', click: bookmarkClicked },
            // tslint:disable-next-line:max-line-length
            { prefixIcon: 'e-pv-previous-page-navigation-icon', id: 'previousPage', tooltipText: 'Previous Page', align: 'Center', click: previousClicked.bind(this) },
            // tslint:disable-next-line:max-line-length
            { prefixIcon: 'e-pv-next-page-navigation-icon', id: 'nextPage', tooltipText: 'Next Page', align: 'Center', click: nextClicked.bind(this) },
            { template: inputTemplate, tooltipText: 'Page Number', align: 'Center' },
            { template: ele, tooltipText: 'Page Number', align: 'Center' },
            { prefixIcon: 'e-pv-search-icon', tooltipText: 'Text Search', align: 'Right', click: searchClicked.bind(this) },
            { prefixIcon: 'e-pv-print-document-icon', tooltipText: 'Print', align: 'Right', click: printClicked.bind(this) },
            { prefixIcon: 'e-pv-download-document-icon', tooltipText: 'Download', align: 'Right', click: downloadClicked.bind(this) }
        ]
    });
    toolbarObj.appendTo('#topToolbar');
    let magnificationToolbar: Tool = new Tool({
        items: [
            { prefixIcon: 'e-pv-fit-page-icon', id: 'fitPage', tooltipText: 'Fit to page', click: pageFitClicked.bind(this) },
            { prefixIcon: 'e-pv-zoom-in-icon', id: 'zoomIn', tooltipText: 'Zoom in', click: zoomInClicked.bind(this) },
            { prefixIcon: 'e-pv-zoom-out-icon', id: 'zoomOut', tooltipText: 'Zoom out', click: zoomOutClicked.bind(this) },
        ]
    });
    magnificationToolbar.appendTo('#magnificationToolbar');
    viewer = new PdfViewer({
        enableToolbar: false,
        enableThumbnail: false,
        documentPath: 'Hive_Succinctly.pdf',
        serviceUrl: 'https://ej2services.syncfusion.com/production/web-services/api/pdfviewer'
    });
    viewer.appendTo('#pdfViewer');
    document.getElementById('fileUpload').addEventListener('change', readFile, false);
    currentPageBox = document.getElementById('currentPage');
    (currentPageBox as HTMLInputElement).value = '1';
    searchInput = document.getElementById('searchInput');
    bookmarkPopup = new Dialog({
        showCloseIcon: true, header: 'Bookmarks', closeOnEscape: false, isModal: false, target: document.getElementById('pdfViewer'),
        content: '<div class="e-pv-bookmarks" id="bookmarkview"></div>',
        buttons: [{
            buttonModel: {},
        }], position: { X: 'left', Y: 'top' }, cssClass: 'e-bookmark-popup', beforeClose: (): void => {
            isBookmarkOpen = false;
         }
    });
    bookmarkPopup.appendTo('#popup');

    textSearchPopup = new Dialog({
        showCloseIcon: false, closeOnEscape: false, isModal: false, target: document.getElementById('pdfViewer'),
        buttons: [{
            buttonModel: {},
        }], position: { X: 'right', Y: 'top' }, cssClass: 'e-text-search-popup',
    });
    textSearchPopup.appendTo('#textSearchBox');

    let previousSearch: Button = new Button({ iconCss: 'e-pv-previous-search' });
    previousSearch.appendTo('#previousSearch');

    let nextSearch: Button = new Button({ iconCss: 'e-pv-next-search-btn' });
    nextSearch.appendTo('#nextSearch');

    let matchCaseCheck: CheckBox = new CheckBox({ label: 'Match case', change: checkBoxChanged });
    matchCaseCheck.appendTo('#matchCase');

    viewer.pageChange = (args: IPageChangeEventArgs): void => {
        (currentPageBox as HTMLInputElement).value = viewer.currentPageNumber.toString();
        updatePageNavigation();
    };

    viewer.documentLoad = (args: ILoadEventArgs): void => {
        document.getElementById('totalPage').textContent = 'of ' + viewer.pageCount;
        updatePageNavigation();
    };
    searchButton = document.getElementById('searchBtn');
    searchInput.addEventListener('focus', () => { searchInput.parentElement.classList.add('e-input-focus'); });
    searchInput.addEventListener('blur', () => { searchInput.parentElement.classList.remove('e-input-focus'); });
    searchInput.addEventListener('keypress', searchInputKeypressed);
    document.getElementById('previousSearch').addEventListener('click', previousSearchClicked);
    document.getElementById('nextSearch').addEventListener('click', nextSearchClicked);
    currentPageBox.addEventListener('keypress', onCurrentPageBoxKeypress);
    currentPageBox.addEventListener('click', onCurrentPageBoxClicked);
    searchButton.addEventListener('click', searchClickHandler);
    bookmarkPopup.hide();
    textSearchPopup.hide();
    enableNextButton(false);
    enablePrevButton(false);

Sample : https://ej2.syncfusion.com/demos/#/material/pdfviewer/custom-toolbar.html