关于javascript:纯JS集成报表系列教程5Web端在线设计器集成

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ActiveReportsJS 领有桌面端设计器和 Web 段在线设计器，当初咱们来说说如何在纯 JavaScript 利用中集成前端报表设计器。

1、创立纯 JS 代码利用

示例代码如下：

`<!DOCTYPE html>

<html lang=”en”>

<head>

<meta charset="utf-8" />

<title>ARJS Report designer</title>

<meta name="description" content="ARJS Report designer" />

<meta name="author" content="GrapeCity" />

</head>

<body></body>

</html>
`

2、装置 ActiveReportsJS

可通过 CDN 或 NPM 装置 ActiveReportsJS 脚本和款式，最简略的办法是通过在 head 标签间接援用 CDN 的链接。

`<link

rel=”stylesheet”

href=”https://cdn.grapecity.com/activereportsjs/2.latest/styles/ar-js-ui.css”

type=”text/css”

/>

<link

rel=”stylesheet”

href=”https://cdn.grapecity.com/activereportsjs/2.latest/styles/ar-js-designer.css”

type=”text/css”

/>

<script src=”https://cdn.grapecity.com/activereportsjs/2.latest/dist/ar-js-core.js”></script>

<script src=”https://cdn.grapecity.com/activereportsjs/2.latest/dist/ar-js-designer.js”></script>`

3、增加报表设计器的宿主元素

在 body 标签中增加 div 元素。

<div id="designer-host"></div>

在 head 标签中增加 designer-host 元素

`<style>

#designer-host {

margin: 0 auto;

width: 100%;

height: 100vh;

}

</style>`

4、增加 ActiveReportsJS 报表

ActiveReportsJS 应用 JSON 格局和 rdlx-json 扩大用于报表模板文件。在应用程序的根目录下，创立名为 report.rdlx-json 的新文件，并在该文件中插入以下 JSON 内容。
`
{

“Name”: “Report”,

“Body”: {

"ReportItems": [

  {

    "Type": "textbox",

    "Name": "TextBox1",

    "Value": "Hello, ActiveReportsJS Viewer",

    "Style": {"FontSize": "18pt"},

    "Width": "8.5in",

    "Height": "0.5in"

  }

]

}

}`

5、初始化设计器

在 body 标签中 designer-host 元素后增加 script 标签

`<script>

var designer = new GC.ActiveReports.ReportDesigner.Designer(“#designer-host”);

designer.setReport({id: “report.rdlx”, displayName: “my report”});

</script>
`

6、预览展现

7、Web 端报表设计器增加预览、保留性能

`<!DOCTYPE html>

<html lang=”en”>

<head>

<meta charset="utf-8" />

<meta http-equiv="X-UA-Compatible" content="IE=edge" />

<title>ActiveReportsJS sample</title>

<meta name="viewport" content="width=device-width, initial-scale=1.0" />

<script src="/dist/ie-polyfills.js"></script>

<script src="/dist/ar-js-core.js"></script>

<script src="/dist/ar-js-designer.js"></script>

<script src="/dist/ar-js-viewer.js"></script>

<script src="/dist/ar-js-pdf.js"></script>

<script src="/dist/designer/zh-locale.js"></script>

<link href="https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap"

      rel="stylesheet" />

<link rel="stylesheet"

      href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"

      integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z"

      crossorigin="anonymous" />

<link rel="stylesheet"

      type="text/css"

      href="/styles/ar-js-ui.css" />

<link rel="stylesheet"

      type="text/css"

      href="/styles/ar-js-viewer.css" />

<link rel="stylesheet"

      type="text/css"

      href="/styles/ar-js-designer.css" />

<style>

    #designer-host, #viewer-host {

        margin: 0 auto;

        width: 100%;

        height: 500px;

    }

</style>

</head>

<body>

<div id="designer-toolbar" class="container-fluid">

    <div class="row mt-3 mb-3">

        <button id="btnPdfPreview"

                type="button"

                class="btn btn-primary btn-sm col-sm-2 ml-1"

                onclick="onPdfPreview()">

            PDF 预览

        </button>

        <button id="btnDesignerOpen"

                type="button"

                class="btn btn-primary btn-sm col-sm-2 ml-1"

                onclick="onOpenDesigner()">

            关上设计器

        </button>

    </div>

</div>

<div id="designer-host"></div>

<div id="viewer-host"></div>

  <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"

          integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"

          crossorigin="anonymous"></script>

<script>

     function onOpenDesigner() {$('#viewer-host, #btnDesignerOpen').hide();

          $('#designer-host, #btnPdfPreview').show();}

    async function onPdfPreview() {const reportInfo = await this.designer.getReport();

          const report = new GC.ActiveReports.Core.PageReport()

          await report.load(reportInfo?.definition);

          const doc = await report.run();

          const result = await GC.ActiveReports.PdfExport.exportDocument(doc);

          result.download("exportedreport.pdf");

      }

    var reportTemplates = GC.ActiveReports.ReportDesigner.templates;

    var resolveFunc = null;

    var designer = new GC.ActiveReports.ReportDesigner.Designer("#designer-host", { language: "zh"});

    var counter = 0;

    reportStorage = new Map();

    function fillReportList() {$('#listReports').empty();

        let reportIds = reportStorage.keys();

        let result = reportIds.next();

        while (!result.done) {

            const reportId = result.value;

            const openReportBtn = $('<button type="button"class="list-group-item list-group-item-action">' + reportId + '</button>');

            openReportBtn.on('click', function () {onSelectReport(reportId);

            })

            $('#listReports').append(openReportBtn);

            result = reportIds.next();}

    }    

    designer.setActionHandlers({onRender: (report) => {$('#viewer-host, #btnDesignerOpen').show();

              $('#designer-host, #btnPdfPreview').hide();

              viewer.open(report.definition);

              return Promise.resolve();},

        onCreate: function () {const reportId = `NewReport${++this.counter}`;

            return Promise.resolve({definition: reportTemplates.CPL, id: reportId, displayName: reportId});

        },

        onOpen: function () {const ret = new Promise(function (resolve) {

                resolveFunc = resolve;

                fillReportList();

                $("#dlgOpen").modal("show");

            });

            return ret;

        },

        onSave: function (info) {const reportId = info.id || `NewReport${++this.counter}`;

            reportStorage.set(reportId, info.definition);

            return Promise.resolve({displayName: reportId});

        },

        onSaveAs: function (info) {const reportId = `NewReport${++this.counter}`;

            alert(reportId);

            reportStorage.set(reportId, info.definition);

            return Promise.resolve({id: reportId, displayName: reportId});

        }

    });

    designer.setReport({id: 'reports/111.rdlx-json'});

      var viewer = new ActiveReports.Viewer('#viewer-host', { language: "zh"});

      $('#viewer-host, #btnDesignerOpen').hide();

    function onSelectReport(reportId) {if (resolveFunc) {$("#dlgOpen").modal("hide");

            resolveFunc({definition: reportStorage.get(reportId), id: reportId, displayName: reportId });

            resolveFunc = null;

        }

    }

</script>

<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"

        integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"

        crossorigin="anonymous"></script>

<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"

        integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN"

        crossorigin="anonymous"></script>

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"

        integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV"

        crossorigin="anonymous"></script>

<div class="modal" id="dlgOpen" tabindex="-1" aria-hidden="true">

    <div class="modal-dialog">

        <div class="modal-content">

            <div class="modal-header">

                <h5 class="modal-title" id="exampleModalLabel">

                    关上报表

                </h5>

                <button type="button"

                        class="close"

                        data-dismiss="modal"

                        aria-label="Close">

                    <span aria-hidden="true">&times;</span>

                </button>

            </div>

            <div class="modal-body">

                <h2> 请抉择报表：</h2>

                <div class="list-group" id="listReports">

                </div>

            </div>

            <div class="modal-footer">

                <button type="button" class="btn btn-secondary" data-dismiss="modal">

                    敞开

                </button>

            </div>

        </div>

    </div>

</div>

</body>

</html>
`
8、预览后果

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javascript
发表至： javascript
2021-11-26
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