wip editing bpmn diagrams w/ burnettk

public/new_bpmn_diagram.bpmn

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" id="Definitions_96f6665" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="3.0.0-dev">
+  <bpmn:process id="Process_bd2e724" isExecutable="true">
+    <bpmn:startEvent id="StartEvent_1" />
+  </bpmn:process>
+  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
+    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_bd2e724">
+      <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
+        <dc:Bounds x="179" y="159" width="36" height="36" />
+      </bpmndi:BPMNShape>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+</bpmn:definitions>

src/index.js

@@ -33,6 +33,7 @@ root.render(
 
         <Route path="process-models/:process_group_id/new" element={<ProcessModelNew />} />
         <Route path="process-models/:process_group_id/:process_model_id" element={<ProcessModelShow />} />
+        <Route path="process-models/:process_group_id/:process_model_id/file" element={<ProcessModelEditDiagram />} />
         <Route path="process-models/:process_group_id/:process_model_id/file/:file_name" element={<ProcessModelEditDiagram />} />
         <Route path="process-models/:process_group_id/:process_model_id/process-instances" element={<ProcessInstanceList />} />
       </Routes>

src/react_bpmn_editor.js

@@ -7,6 +7,8 @@ import React, { useEffect, useState } from "react";
 import { BACKEND_BASE_URL } from './config';
 import { HOT_AUTH_TOKEN } from './config';
 
+import Button from 'react-bootstrap/Button';
+
 import "bpmn-js/dist/assets/diagram-js.css";
 import "bpmn-js/dist/assets/bpmn-font/css/bpmn-embedded.css";
 import "bpmn-js-properties-panel/dist/assets/properties-panel.css"
@@ -74,8 +76,10 @@ export default function ReactBpmnEditor(props) {
     if (!diagramXML) {
       if (props.url) {
         return fetchDiagramFromURL(props.url);
-      } else {
+      } else if (props.file_name) {
         return fetchDiagramFromJsonAPI(props.process_model_id, props.file_name);
+      } else {
+        return fetchDiagramFromURL(process.env.PUBLIC_URL + '/new_bpmn_diagram.bpmn');
       }
     }
 
@@ -113,7 +117,14 @@ export default function ReactBpmnEditor(props) {
     }
   }, [props, diagramXML, bpmnViewerState]);
 
+  function handleSave() {
+    bpmnViewerState.saveXML({ format: true })
+    .then(xml => props.saveDiagram(xml))
+  }
+
   return (
-    <div></div>
+    <div>
+      <Button onClick={handleSave} variant="danger">Save</Button>
+    </div>
   );
 }

src/routes/ProcessModelEditDiagram.js

@@ -6,21 +6,84 @@ import { useParams } from "react-router-dom";
 import ReactBpmnEditor from "../react_bpmn_editor"
 import ProcessBreadcrumb from '../components/ProcessBreadcrumb'
 
+import { Button, Modal } from 'react-bootstrap';
+
 export default function ProcessModelEditDiagram() {
+  const [show, setShow] = useState(false);
+  const handleShow = () => setShow(true);
+
   let params = useParams();
 
   const [processModelFile, setProcessModelFile] = useState(null);
+  const [newFileName, setNewFileName] = useState("");
+  const [newBpmnXml, setNewBpmnXml] = useState(null);
 
   useEffect(() => {
-    fetch(`${BACKEND_BASE_URL}/process-models/${params.process_model_id}/file/${params.file_name}`, {
-      headers: new Headers({
-        'Authorization': `Bearer ${HOT_AUTH_TOKEN}`
+    if (params.file_name) {
+      fetch(`${BACKEND_BASE_URL}/process-models/${params.process_model_id}/file/${params.file_name}`, {
+        headers: new Headers({
+          'Authorization': `Bearer ${HOT_AUTH_TOKEN}`
+        })
       })
+        .then(res => res.json())
+        .then(
+          (result) => {
+            setProcessModelFile(result);
+          },
+          // Note: it's important to handle errors here
+          // instead of a catch() block so that we don't swallow
+          // exceptions from actual bugs in components.
+          (error) => {
+            console.log(error);
+          }
+        )
+    }
+  }, [params]);
+
+  function onError(err) {
+    console.log('ERROR:', err);
+  }
+
+  const handleFileNameCancel = () => setShow(false);
+
+  const handleFileNameSave = (() => {
+    setShow(false);
+    saveDiagram(newBpmnXml);
+  });
+
+  const saveDiagram = ((bpmnXML, fileName = params.file_name) => {
+    setNewBpmnXml(bpmnXML);
+
+    let url = `${BACKEND_BASE_URL}/process-models/${params.process_model_id}/file`;
+    let httpMethod = 'PUT'
+
+    if (newFileName) {
+      fileName = newFileName;
+      httpMethod = 'POST'
+    } else {
+      url += `/${fileName}`;
+    }
+    if (!fileName) {
+      handleShow();
+      return;
+    }
+
+
+    let bpmnFile = new File([bpmnXML.xml], fileName);
+    const formData = new FormData();
+    formData.append('file', bpmnFile);
+    formData.append('fileName', bpmnFile.name);
+    fetch(url, {
+      headers: new Headers({
+        'Authorization': `Bearer ${HOT_AUTH_TOKEN}`,
+      }),
+      method: httpMethod,
+      body: formData,
     })
       .then(res => res.json())
       .then(
         (result) => {
-          setProcessModelFile(result);
+          console.log(result);
         },
         // Note: it's important to handle errors here
         // instead of a catch() block so that we don't swallow
@@ -29,11 +92,7 @@ export default function ProcessModelEditDiagram() {
           console.log(error);
         }
       )
-  }, [params]);
-
-  function onError(err) {
-    console.log('ERROR:', err);
-  }
+  });
 
   if (processModelFile) {
     return (
@@ -44,13 +103,54 @@ export default function ProcessModelEditDiagram() {
         linkProcessModel="true"
       />
       <h2>Process Model File: {processModelFile.name}</h2>
-      <div id="bpmn-js-container-thing"></div>
       <ReactBpmnEditor
         process_model_id={params.process_model_id}
         file_name={processModelFile.name}
         diagramXML={processModelFile.file_contents}
         onError={ onError }
+        saveDiagram={ saveDiagram }
       />
+      <div id="bpmn-js-container-thing"></div>
+      </main>
+    );
+  } else if (!params.file_name) {
+    return (
+      <main style={{ padding: "1rem 0" }}>
+      <ProcessBreadcrumb
+        processGroupId={params.process_group_id}
+        processModelId={params.process_model_id}
+        linkProcessModel="true"
+      />
+      <h2>Process Model File</h2>
+      <ReactBpmnEditor
+        process_model_id={params.process_model_id}
+        onError={ onError }
+        saveDiagram={ saveDiagram }
+      />
+
+      <Modal show={show} onHide={handleFileNameCancel}>
+        <Modal.Header closeButton>
+          <Modal.Title>Process Model File Name</Modal.Title>
+        </Modal.Header>
+        <label>File Name:</label>
+        <input
+          name='file_name'
+          type='text'
+          value={newFileName}
+          onChange={e => setNewFileName(e.target.value)}
+        />
+        <Modal.Footer>
+          <Button variant="secondary" onClick={handleFileNameCancel}>
+            Close
+          </Button>
+          <Button variant="primary" onClick={handleFileNameSave}>
+            Save Changes
+          </Button>
+        </Modal.Footer>
+      </Modal>
+
+
+      <div id="bpmn-js-container-thing"></div>
       </main>
     );
   } else {

src/routes/ProcessModelShow.js

@@ -107,6 +107,7 @@ export default function ProcessModelShow() {
       <Stack direction="horizontal" gap={3}>
         <Button onClick={processModelRun} variant="primary">Run Primary</Button>
         <Button onClick={deleteProcessModel} variant="danger">Delete Process Model</Button>
+        <Button href={`/process-models/${processModel.process_group_id}/${processModel.id}/file`} variant="warning">Add New Process Model File</Button>
       </Stack>
       <br />
       <br />