TableEngine Object

Summary

Defines an engine for editing tables, rows, columns, and cells in a document.

Syntax

TypeScript
JavaScript
function lt.Document.Editor.TableEngine 
class lt.Document.Editor.TableEngine() 

Remarks

This would be used to control the editing and creation of tables and its various parts in the document.

Example

This example branches from the DocumentEditor example, focusing on using the Table Engine.

TableEngineExample.ts
EditorInitializer.ts
TableEngineExample.js
EditorInitializer.js
TableEngineExample.html
examples.css
import {EditorInitializer} from '../utility/EditorInitializer'; 
import {editor} from '../utility/EditorInitializer'; 
 
export class TableEnginesExample { 
  
    run = () => { 
        new EditorInitializer(); 
        this.initTable(); 
    } 
 
    initTable =()=>{ 
        //Creates a new table in the document when the example is run  
        editor.engine.tables.insertTable(3,3); 
    } 
    importTable =()=>{ 
        //Allows the user to insert a table by prompting for the rows and columns in a specific format and then inserts that  
        //table at the cursor location. No more then 10 for either rows or columns. 
        var input = prompt("How many rows and columns (no more than 10 for either)? Enter numbers as row/column") 
        var rowCol = input.split('/'); 
        editor.engine.tables.insertTable(rowCol[0],rowCol[1]); 
    } 
    removeTable =()=>{ 
        //deletes the table that the cursor is currently inside 
        editor.engine.tables.deleteTable(); 
    } 
    addColumn =()=>{ 
        //adds a column to the left of the column that the cursor is in 
        editor.engine.tables.insertColumn(1); 
    } 
    removeColumn =()=>{ 
        //removes the column that the cursor is in 
        editor.engine.tables.deleteColumn(); 
    } 
    addRow =()=>{ 
        //adds a row above the row that the cursor is in 
        editor.engine.tables.insertRow(1) 
    } 
    removeRow =()=>{ 
        //removes the row that the cursor is in  
        editor.engine.tables.deleteRow(); 
    } 
    reformColumns =()=>{ 
        //adjusts the column sizes to stay with in the default margins if they  
        editor.engine.tables.distributeColumns(); 
    } 
    reformRows=()=>{ 
        //adjusts the height of the rows to be uniform across the table 
        editor.engine.tables.distributeRows(); 
    } 
    mergeCells=()=>{ 
        //combines the selected rows into one 
        editor.engine.tables.merge(); 
    } 
    unmergeCells=()=>{ 
        //splits the merged cell into its original members 
        editor.engine.tables.unmerge(); 
    } 
 
} 
export var editor: any = null; 
export class EditorInitializer { 
    private callback: (editor: any) => void = null; 
 
    constructor(callback?: (editor: any) => void) { 
        this.callback = callback; 
        this.init(); 
    } 
 
    init = () => { 
        this.setLicense(); 
        this.initFactory(); 
        this.addEditControl(); 
    } 
 
    setLicense = () => { 
        lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", function (setLicenseResult) { 
            if (setLicenseResult.result) { 
                console.log("LEADTOOLS client license set successfully"); 
            } else { 
                var msg = "No LEADTOOLS License\n\nYour license file is missing, invalid or expired. LEADTOOLS will not function. Please contact LEAD Sales for information on obtaining a valid license."; 
                alert(msg); 
                var msgParagraph = document.createElement('p'); 
                msgParagraph.innerText = msg; 
                var parent_1 = document.getElementById("div_container"); 
                while (parent_1.firstElementChild) { 
                    parent_1.removeChild(parent_1.firstElementChild); 
                } 
                parent_1.appendChild(msgParagraph); 
                console.log(msg); 
            } 
        }); 
    } 
 
    initFactory = () => { 
        // To communicate with the DocumentsService, it must be running!   
        // Change these parameters to match the path to the service.  
        lt.Document.DocumentFactory.serviceHost = "http://localhost:40000"; 
        lt.Document.DocumentFactory.servicePath = ""; 
        lt.Document.DocumentFactory.serviceApiPath = "api"; 
        // Set local proxy url template (Used in local load mode)  
        lt.Document.DocumentFactory.localProxyUrlTemplate = "http://localhost:40000/api/CorsProxy/Proxy?{0}"; 
        // Ping the Document service  
        lt.Document.DocumentFactory.verifyService() 
            .done(function (response: ResponseType | any) { 
                var serviceInfo = "Service name: '" + response.serviceName + "'"; 
                serviceInfo += " version: '" + response.serviceVersion + "'"; 
                serviceInfo += " platform: '" + response.servicePlatform + "'"; 
                serviceInfo += " OS: '" + response.serviceOperatingSystem + "'"; 
                lt.LTHelper.log(serviceInfo); 
            }) 
            .fail(function (jqXHR: string, statusText: string, errorThrown: string) { 
                var errMsg = "Cannot reach the LEADTOOLS Document Service.\n\nPlease Make sure LEADTOOLS DocumentService is running\n - Examples/Document/JS/DocumentServiceDotNet\n - Examples/Document/JS/DocumentServiceJava\nand verify that the service path is correct, then refresh the application."; 
                window.alert(errMsg); 
                console.log(errMsg); 
            }); 
    } 
 
    addEditControl = () => { 
        //sets up the initial document editor object 
        var content = document.getElementById('content'); 
        editor = new lt.Document.Editor.DocumentEditor({ 
            root: content 
        }); 
        this.registerClickEvents(); 
        if (this.callback) { 
            this.callback(editor); 
        } 
    } 
 
    registerClickEvents = () => { 
        //registers the onclick functions for the buttons 
        const importClick = document.getElementById('importBtn'); 
        importClick.onclick = (e) => { 
            this.selectAndLoadFile(); 
        } 
        const exportClick = document.getElementById('exportBtn'); 
        exportClick.onclick = (e) => { 
            this.exportAsPdf(); 
        } 
    } 
 
    selectAndLoadFile = () => { 
        //creates an input element on the Import Document button to upload files 
        //into the document editor 
        var input = document.createElement('input'); 
        input.type = 'file'; 
        input.style.display = 'none'; 
        input.accept = '.doc, .docx, .pdf, .rtf, .txt'; 
        input.onchange = function (e) { 
            var files = input.files; 
            if (!files || !files.length) 
                return; 
            var file = files[0]; 
            document.body.style.cursor = 'wait'; 
            var promise = lt.Document.Editor.EditableDocument.fromFile(file); 
            promise.then(function (doc: HTMLElement) { 
                editor.setDocument(doc); 
            }); 
            promise.finally(() => { 
                document.body.style.cursor = 'default'; 
            }); 
        }; 
        input.click(); 
    } 
 
    exportAsPdf = () => { 
        //exports the current document for saving 
        var promise = editor.document.toFile("untitled", lt.Document.Writer.DocumentFormat.pdf); 
        var err = null; 
        promise.then(function (name: string) { }); 
        promise.catch(function (err: string) { 
            alert("There was an issue exporting the document. " + err); 
        }); 
    } 
 
} 
import {EditorInitializer} from '../utility/EditorInitializer'; 
import {editor} from '../utility/EditorInitializer'; 
 
export class TableEnginesExample { 
  
    run = () => { 
        new EditorInitializer(); 
        this.initTable(); 
    } 
 
    initTable =()=>{ 
        //Creates a new table in the document when the example is run  
        editor.engine.tables.insertTable(3,3); 
    } 
    importTable =()=>{ 
        //Allows the user to insert a table by prompting for the rows and columns in a specific format and then inserts that  
        //table at the cursor location. No more then 10 for either rows or columns. 
        var input = prompt("How many rows and columns (no more than 10 for either)? Enter numbers as row/column") 
        var rowCol = input.split('/'); 
        editor.engine.tables.insertTable(rowCol[0],rowCol[1]); 
    } 
    removeTable =()=>{ 
        //deletes the table that the cursor is currently inside 
        editor.engine.tables.deleteTable(); 
    } 
    addColumn =()=>{ 
        //adds a column to the left of the column that the cursor is in 
        editor.engine.tables.insertColumn(1); 
    } 
    removeColumn =()=>{ 
        //removes the column that the cursor is in 
        editor.engine.tables.deleteColumn(); 
    } 
    addRow =()=>{ 
        //adds a row above the row that the cursor is in 
        editor.engine.tables.insertRow(1) 
    } 
    removeRow =()=>{ 
        //removes the row that the cursor is in  
        editor.engine.tables.deleteRow(); 
    } 
    reformColumns =()=>{ 
        //adjusts the column sizes to stay with in the default margins if they  
        editor.engine.tables.distributeColumns(); 
    } 
    reformRows=()=>{ 
        //adjusts the height of the rows to be uniform across the table 
        editor.engine.tables.distributeRows(); 
    } 
    mergeCells=()=>{ 
        //combines the selected rows into one 
        editor.engine.tables.merge(); 
    } 
    unmergeCells=()=>{ 
        //splits the merged cell into its original members 
        editor.engine.tables.unmerge(); 
    } 
 
} 
export let editor = null; 
export class EditorInitializer { 
 
    constructor(callback) { 
         
        this.callback = callback; 
        this.init(); 
    } 
 
    init = () => { 
        this.setLicense(); 
        this.initFactory(); 
        this.addEditControl(); 
    } 
 
    setLicense = () => { 
        lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", function (setLicenseResult) { 
            if (setLicenseResult.result) { 
                console.log("LEADTOOLS client license set successfully"); 
            } else { 
                var msg = "No LEADTOOLS License\n\nYour license file is missing, invalid or expired. LEADTOOLS will not function. Please contact LEAD Sales for information on obtaining a valid license."; 
                alert(msg); 
                var msgParagraph = document.createElement('p'); 
                msgParagraph.innerText = msg; 
                var parent_1 = document.getElementById("div_container"); 
                while (parent_1.firstElementChild) { 
                    parent_1.removeChild(parent_1.firstElementChild); 
                } 
                parent_1.appendChild(msgParagraph); 
                console.log(msg); 
            } 
        }); 
    } 
 
    initFactory = () => { 
        // To communicate with the DocumentsService, it must be running!   
        // Change these parameters to match the path to the service.  
        lt.Document.DocumentFactory.serviceHost = "http://localhost:40000"; 
        lt.Document.DocumentFactory.servicePath = ""; 
        lt.Document.DocumentFactory.serviceApiPath = "api"; 
        // Set local proxy url template (Used in local load mode)  
        lt.Document.DocumentFactory.localProxyUrlTemplate = "http://localhost:40000/api/CorsProxy/Proxy?{0}"; 
        // Ping the Document service  
        lt.Document.DocumentFactory.verifyService() 
            .done(function (response) { 
                var serviceInfo = "Service name: '" + response.serviceName + "'"; 
                serviceInfo += " version: '" + response.serviceVersion + "'"; 
                serviceInfo += " platform: '" + response.servicePlatform + "'"; 
                serviceInfo += " OS: '" + response.serviceOperatingSystem + "'"; 
                lt.LTHelper.log(serviceInfo); 
            }) 
            .fail(function (jqXHR, statusText, errorThrown) { 
                var errMsg = "Cannot reach the LEADTOOLS Document Service.\n\nPlease Make sure LEADTOOLS DocumentService is running\n - Examples/Document/JS/DocumentServiceDotNet\n - Examples/Document/JS/DocumentServiceJava\nand verify that the service path is correct, then refresh the application."; 
                window.alert(errMsg); 
                console.log(errMsg); 
            }); 
    } 
 
    addEditControl = () => {  
        //sets up the initial document editor object 
        var content = document.getElementById('content'); 
        editor = new lt.Document.Editor.DocumentEditor({ 
            root: content 
        }); 
        this.registerClickEvents(); 
        if(this.callback){ 
            this.callback(editor); 
        } 
    } 
 
    registerClickEvents = () => { 
        //registers the onclick functions for the buttons 
        const importClick = document.getElementById('importBtn'); 
        importClick.onclick = (e) =>{ 
            this.selectAndLoadFile(); 
        } 
        const exportClick = document.getElementById('exportBtn'); 
        exportClick.onclick = (e) =>{ 
            this.exportAsPdf(); 
        } 
    } 
 
    selectAndLoadFile = () => { 
        //creates an input element on the Import Document button to upload files 
        //into the document editor 
        var input = document.createElement('input'); 
        input.type = 'file'; 
        input.style.display = 'none'; 
        input.accept = '.doc, .docx, .pdf, .rtf, .txt'; 
        input.onchange = function (e) { 
            var files = input.files; 
            if (!files || !files.length) 
                return; 
            var file = files[0]; 
            document.body.style.cursor = 'wait'; 
            var promise = lt.Document.Editor.EditableDocument.fromFile(file); 
            promise.then(function (doc) { 
                editor.setDocument(doc); 
            }); 
            promise.finally(()=> { 
                document.body.style.cursor = 'default'; 
            }); 
        }; 
        input.click(); 
    } 
 
    exportAsPdf = () => { 
        //exports the current document for saving 
        var promise = editor.document.toFile("untitled", lt.Document.Writer.DocumentFormat.pdf); 
        var err = null; 
        promise.then(function (name) { }); 
        promise.catch(function (err) { 
            alert("There was an issue exporting the document. " + err); 
        }); 
    } 
} 
<!DOCTYPE html> 
<html> 
 
<head> 
    <meta charset="utf-8" /> 
    <title> Using the Table Engine in the Document Editor</title> 
    <script src="https://code.jquery.com/jquery-3.6.0.js"></script> 
    <script src="https://code.jquery.com/ui/1.13.0/jquery-ui.js"></script> 
 
    <script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script> 
    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script> 
 
 
    <script src="../../lib/Leadtools.js"></script> 
    <script src="../../lib/Leadtools.Annotations.Engine.js"></script> 
    <script src="../../lib/Leadtools.Annotations.Automation.js"></script> 
    <script src="../../lib/Leadtools.Document.js"></script> 
    <script src="../../lib/Leadtools.Document.Editor.js"></script> 
 
    <link rel="stylesheet" type="text/css" href="../css/examples.css"> 
 
    <script src="../../javascript/bundle.js"></script> 
</head> 
 
<body> 
    <div> 
        <div id="title"> 
            Using the Table Engine in the Document Editor 
        </div> 
        <ul id="menu"> 
            <li><a id="importBtn" class="rightLineBorder">Import Document</a></li> 
            <li><a id="exportBtn" class="rightLineBorder">Export Document</a></li> 
            <li><a id="exampleBtn" class="rightLineBorder">Run Example</a></li> 
            <li><a id="insertTable" class="rightLineBorder" style="display: none;">Add Table</a></li> 
            <li><a id="removeTBtn" class="rightLineBorder" style="display: none;">Remove Table</a></li> 
            <li><a id="addColumnBtn" class="rightLineBorder" style="display: none;">Add Column to Table</a></li> 
            <li><a id="removeColumnBtn" class="rightLineBorder" style="display: none;">Remove Column from Table</a></li> 
            <li><a id="addRowBtn" class="rightLineBorder" style="display: none;">Add Row to Table</a></li> 
            <li><a id="removeRowBtn" class="rightLineBorder" style="display: none;">Remove Row from Table</a></li> 
 
            <li><a id="reformCBtn" class="rightLineBorder" style="display: none;">Format Columns</a></li> 
            <li><a id="reformRBtn" class="rightLineBorder" style="display: none;">Format Rows</a></li> 
 
            <li><a id="mergeBtn" class="rightLineBorder" style="display: none;">Merge Cells</a></li> 
            <li><a id="unmergeBtn" class="rightLineBorder" style="display: none;">Unmerge Cells</a></li> 
 
        </ul> 
    </div> 
    <div id="editorWrapper" oncontextmenu="return false;"> 
        <div class="inner-body" id="content"> 
        </div> 
    </div> 
</body> 
<script> 
    //creates the onclick functions for the buttons and hides/shows them when necessary 
    window.onload = () => { 
        const button = document.getElementById('exampleBtn'); 
        const example = new window.examples.TableEnginesExample(); 
 
        const insertTable = document.getElementById('insertTable'); 
        const removeTBtn = document.getElementById('removeTBtn'); 
        const addColumnBtn = document.getElementById('addColumnBtn'); 
        const removeColumnBtn = document.getElementById('removeColumnBtn'); 
        const addRowBtn = document.getElementById('addRowBtn'); 
        const removeRowBtn = document.getElementById('removeRowBtn'); 
        const reformCBtn = document.getElementById('reformCBtn'); 
        const reformRBtn = document.getElementById('reformRBtn'); 
        const mergeBtn = document.getElementById('mergeBtn'); 
        const unmergeBtn = document.getElementById('unmergeBtn'); 
 
        button.onclick = () => { 
 
            example.run(); 
            button.style.display = "none"; 
            insertTable.style.display = "block"; 
            removeTBtn.style.display = "block"; 
            addColumnBtn.style.display = "block"; 
            removeColumnBtn.style.display = "block"; 
            addRowBtn.style.display = "block"; 
            removeRowBtn.style.display = "block"; 
            reformCBtn.style.display = "block"; 
            reformRBtn.style.display = "block"; 
            mergeBtn.style.display = "block"; 
            unmergeBtn.style.display = "block"; 
        } 
        reformCBtn.onclick = () => { 
            example.reformColumns(); 
        } 
        reformRBtn.onclick = () => { 
            example.reformRows(); 
        } 
        insertTable.onclick = () => { 
            example.importTable(); 
        } 
        removeTBtn.onclick = () => { 
            example.removeTable(); 
        } 
        addColumnBtn.onclick = () => { 
            example.addColumn(); 
        } 
        removeColumnBtn.onclick = () => { 
            example.removeColumn(); 
        } 
        addRowBtn.onclick = () => { 
            example.addRow(); 
        } 
        removeRowBtn.onclick = () => { 
            example.removeRow(); 
        } 
        mergeBtn.onclick = () => { 
            example.mergeCells(); 
        } 
        unmergeBtn.onclick = () => { 
            example.unmergeCells(); 
        } 
    }; 
</script> 
 
</html> 
html { 
    height: 100%; 
} 
 
body { 
    height: 100%; 
    margin: 0; 
    display: flex; 
    flex-direction: column; 
} 
 
#title { 
    padding: 10px; 
    font-size: 24px; 
} 
 
ul { 
    list-style-type: none; 
    margin: 0; 
    padding: 0; 
    overflow: hidden; 
} 
 
#editorWrapper { 
    border-top: 1px solid black; 
    height: 95%; 
} 
 
#content { 
    height: 100%; 
} 
 
li { 
    float: left; 
} 
 
    li a { 
        display: block; 
        text-align: center; 
        padding: 14px 16px; 
        text-decoration: none; 
        cursor: pointer; 
        user-select: none; 
        font-weight: bold; 
    } 
 
    li:first-child { 
        margin-left: 5px; 
    } 
 
.rightLineBorder { 
    border-right: 1px black solid; 
} 
 
li a:hover { 
    background-color: lightblue; 
} 

Requirements

Target Platforms

See Also

TableEngine Members

Leadtools.Document.Editor Namespace

Help Version 23.0.2024.2.29
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Leadtools.Document.Editor Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.