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Create Flowchart from Local Data by Using the Diagram

Environment

Product Version 2018.1.117
Product Progress Kendo UI Diagram

Description

How can I create a flowchart and use JSON or local data to bind the shapes?

Solution

Create data sets for the Diagram shapes and connections, and a client-side function that maps this data to the shape and connection properties.

Some of the flowchart shapes are available as pre-defined shape types in the Diagram. Define the rest of the shapes by using a Path object.

For more information on how to create custom shapes in the Diagram, refer to the example on the Diagram Builder. For a full list of the shape and connection properties in the Diagram, refer to its model fields.

The following example demonstrates how to implement a simple flowchart by using a common function to generate all shapes.

    <div id="diagram"></div>

    <script>
      $('document').ready(function () {

        var diagram = $("#diagram").kendoDiagram({

          connectionDefaults: {
            endCap: {
              type: 'ArrowEnd',
              fill: {
                color: "#222222"
              }
            },
            hover: {
              stroke: {
                color: "#02DA10",
                fill: "#02DA10"
              }
            }
          }
        }).getKendoDiagram();


        function createShape(options) {
          var shapeOptions = {
            id: options.id,
            x: options.positionX,
            y: options.positionY,
            width: options.width || 100,
            height: options.height || 50,
            type: options.type,
            path: options.path || undefined,
            content: {
              text: options.textData || undefined,
              color: options.textData.length> 15? 'transparent' : '#fff'
            },
            fill: options.fillColor || '#0088CC'
          };

          var shape = new kendo.dataviz.diagram.Shape(shapeOptions);

          return shape;
        }

        var data = [{
          'id': 1,
          'textData': 'Start',
          'type': 'circle',
          'positionX': 424.5,
          'positionY': 20,
          'fillColor': 'green',
          'width': 50
        },{
          'id': 2,
          'textData': 'State 1',
          'type': 'rectangle',
          'positionX': 400,
          'positionY': 125,
          'height': 100,
          'width': 100,
          'path': 'M 50 0 100 50 50 100 0 50 Z'
        },{
          'id': 3,
          'textData': 'Completed?',
          'type': 'circle',
          'positionX': 399.5,
          'positionY': 290
        }];

        var connectionsData = [{
            'fromShapeId': 1,
          'toShapeId': 2
        },{
            'fromShapeId': 2,
          'toShapeId': 3
        },{
            'fromShapeId': 3,
          'toShapeId': 1
        }];

        for(var i = 0; i < data.length; i++) {
            diagram.addShape(createShape(data[i]));
        }

        for(var j = 0; j < connectionsData.length; j++){
          var sourceShape = diagram.getShapeById(connectionsData[j].fromShapeId);
          var targetShape = diagram.getShapeById(connectionsData[j].toShapeId);
            diagram.connect(sourceShape, targetShape);
        }
      });
    </script>
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