1 files changed, 498 insertions, 0 deletions
diff --git a/src/generic-components/graph/ForceDirectedGraph.jsx b/src/generic-components/graph/ForceDirectedGraph.jsx
new file mode 100644
index 0000000..caad1c0
--- /dev/null
+++ b/src/generic-components/graph/ForceDirectedGraph.jsx
@@ -0,0 +1,498 @@
+/*
+ * ============LICENSE_START===================================================
+ * SPARKY (AAI UI service)
+ * ============================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * All rights reserved.
+ * ============================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=====================================================
+ *
+ * ECOMP and OpenECOMP are trademarks
+ * and service marks of AT&T Intellectual Property.
+ */
+
+import {drag} from 'd3-drag';
+import {forceSimulation, forceLink, forceManyBody, forceCenter} from 'd3-force';
+import {interpolateNumber} from 'd3-interpolate';
+import {select, event as currentEvent} from 'd3-selection';
+import React, {Component, PropTypes} from 'react';
+import {interval, now} from 'd3-timer';
+import {zoom, zoomIdentity} from 'd3-zoom';
+import NodeConstants from './NodeVisualElementConstants.js';
+
+import {simulationKeys} from './ForceDefinitions.js';
+import NodeFactory from './NodeFactory.js';
+import NodeVisualElementFactory from './NodeVisualElementFactory.js';
+
+class ForceDirectedGraph extends Component {
+  static propTypes = {
+    viewWidth: PropTypes.number,
+    viewHeight: PropTypes.number,
+    graphData: PropTypes.object,
+    nodeIdKey: PropTypes.string,
+    linkIdKey: PropTypes.string,
+    nodeSelectedCallback: PropTypes.func,
+    nodeButtonSelectedCallback: PropTypes.func,
+    currentlySelectedNodeView: PropTypes.string
+  };
+  
+  static defaultProps = {
+    viewWidth: 0,
+    viewHeight: 0,
+    graphData: {
+      graphCounter: -1, nodeDataArray: [], linkDataArray: [], graphMeta: {}
+    },
+    nodeIdKey: '',
+    linkIdKey: '',
+    nodeSelectedCallback: undefined,
+    nodeButtonSelectedCallback: undefined,
+    currentlySelectedNodeView: ''
+  };
+  
+  constructor(props) {
+    super(props);
+    
+    this.state = {
+      nodes: [], links: [], mainGroupTransform: zoomIdentity
+    };
+    
+    this.updateSimulationForce = this.updateSimulationForce.bind(this);
+    this.resetTransform = this.resetTransform.bind(this);
+    this.applyBufferDataToState = this.applyBufferDataToState.bind(this);
+    this.createNodePropForState = this.createNodePropForState.bind(this);
+    this.createLinkPropForState = this.createLinkPropForState.bind(this);
+    this.startSimulation = this.startSimulation.bind(this);
+    this.simulationComplete = this.simulationComplete.bind(this);
+    this.simulationTick = this.simulationTick.bind(this);
+    this.nodeSelected = this.nodeSelected.bind(this);
+    this.onZoom = this.onZoom.bind(this);
+    this.onGraphDrag = this.onGraphDrag.bind(this);
+    this.onNodeDrag = this.onNodeDrag.bind(this);
+    this.addNodeInterpolator = this.addNodeInterpolator.bind(this);
+    this.runInterpolators = this.runInterpolators.bind(this);
+    
+    this.nodeBuffer = [];
+    this.linkBuffer = [];
+    this.nodeDatum = [];
+    this.nodeButtonDatum = [];
+    this.nodeFactory = new NodeFactory();
+    this.visualElementFactory = new NodeVisualElementFactory();
+    
+    this.isGraphMounted = false;
+    
+    this.listenerGraphCounter = -1;
+    this.nodeIndexTracker = new Map();
+    this.interpolators = new Map();
+    this.areInterpolationsRunning = false;
+    
+    this.newNodeSelected = true;
+    this.currentlySelectedNodeButton = undefined;
+    
+    this.intervalTimer = interval(this.applyBufferDataToState, simulationKeys.DATA_COPY_INTERVAL);
+    this.intervalTimer.stop();
+    
+    this.interpolationTimer = interval(this.runInterpolators, simulationKeys.DATA_COPY_INTERVAL);
+    this.interpolationTimer.stop();
+    
+    this.simulation = forceSimulation();
+    this.simulation.on('end', this.simulationComplete);
+    this.simulation.stop();
+    
+    this.svgZoom =
+      zoom().scaleExtent([NodeConstants.SCALE_EXTENT_MIN, NodeConstants.SACEL_EXTENT_MAX]);
+    this.svgZoom.clickDistance(2);
+    this.nodeDrag = drag().clickDistance(2);
+    
+    this.updateSimulationForce();
+    
+    if (props.graphData) {
+      if (props.graphData.graphCounter !== -1) {
+        this.startSimulation(props.graphData);
+      }
+    }
+  }
+  
+  componentDidMount() {
+    this.isGraphMounted = true;
+  }
+  
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.graphData.graphCounter !== this.props.graphData.graphCounter) {
+      this.listenerGraphCounter = this.props.graphData.graphCounter;
+      this.newNodeSelected = true;
+      this.resetTransform();
+      this.startSimulation(nextProps.graphData);
+    }
+  }
+  
+  componentDidUpdate(prevProps) {
+    let hasNewGraphDataRendered = (prevProps.graphData.graphCounter ===
+    this.props.graphData.graphCounter);
+    let shouldAttachListeners = (this.listenerGraphCounter !== this.props.graphData.graphCounter);
+    let nodeCount = this.state.nodes.length;
+    
+    if (nodeCount > 0) {
+      if (hasNewGraphDataRendered && shouldAttachListeners) {
+        
+        let nodes = select('.fdgMainSvg').select('.fdgMainG')
+                                         .selectAll('.aai-entity-node')
+                                         .data(this.nodeDatum);
+        
+        nodes.on('click', (d) => {
+          this.nodeSelected(d);
+        });
+        
+        nodes.call(this.nodeDrag.on('drag', (d) => {
+          let xAndY = [currentEvent.x, currentEvent.y];
+          this.onNodeDrag(d, xAndY);
+        }));
+        
+        let mainSVG = select('.fdgMainSvg');
+        let mainView = mainSVG.select('.fdgMainView');
+        this.svgZoom.transform(mainSVG, zoomIdentity);
+        this.svgZoom.transform(mainView, zoomIdentity);
+        
+        mainSVG.call(this.svgZoom.on('zoom', () => { // D3 Zoom also handles panning
+          this.onZoom(currentEvent.transform);
+        })).on('dblclick.zoom', null); // Ignore the double-click zoom event
+        
+        this.listenerGraphCounter = this.props.graphData.graphCounter;
+      }
+    }
+  }
+  
+  componentWillUnmount() {
+    this.isGraphMounted = false;
+    
+    let nodes = select('.fdgMainSvg').select('.fdgMainG')
+                                     .selectAll('.aai-entity-node');
+    let nodeButtons = nodes.selectAll('.node-button');
+    
+    nodes.on('click', null);
+    nodeButtons.on('click', null);
+    
+    let mainSVG = select('.fdgMainSvg');
+    
+    mainSVG.call(this.svgZoom.on('zoom', null)).on('dblclick.zoom', null);
+    mainSVG.call(drag().on('drag', null));
+  }
+  
+  updateSimulationForce() {
+    this.simulation.force('link', forceLink());
+    this.simulation.force('link').id((d) => {
+      return d.id;
+    });
+    this.simulation.force('link').strength(0.3);
+    this.simulation.force('link').distance(100);
+    
+    this.simulation.force('charge', forceManyBody());
+    this.simulation.force('charge').strength(-1250);
+    this.simulation.alpha(1);
+    
+    this.simulation.force('center',
+      forceCenter(this.props.viewWidth / 2, this.props.viewHeight / 2));
+  }
+  
+  resetTransform() {
+    if (this.isGraphMounted) {
+      this.setState(() => {
+        return {
+          mainGroupTransform: zoomIdentity
+        };
+      });
+    }
+  }
+  
+  applyBufferDataToState() {
+    this.nodeIndexTracker.clear();
+    
+    let newNodes = [];
+    this.nodeBuffer.map((node, i) => {
+      let nodeProps = this.createNodePropForState(node);
+      
+      if (nodeProps.meta.nodeMeta.className === NodeConstants.SELECTED_NODE_CLASS_NAME ||
+        nodeProps.meta.nodeMeta.className === NodeConstants.SELECTED_SEARCHED_NODE_CLASS_NAME) {
+        
+        this.nodeButtonDatum[0].data = nodeProps.meta;
+        
+        nodeProps = {
+          ...nodeProps,
+          buttons: [this.nodeButtonDatum[0].isSelected]
+        };
+      }
+      
+      newNodes.push(this.nodeFactory.buildNode(nodeProps.meta.nodeMeta.className, nodeProps));
+      
+      this.nodeIndexTracker.set(node.id, i);
+    });
+    
+    let newLinks = [];
+    this.linkBuffer.map((link) => {
+      let key = link.id;
+      let linkProps = this.createLinkPropForState(link);
+      newLinks.push(this.visualElementFactory.createSvgLine(linkProps, key));
+    });
+    
+    if (this.isGraphMounted) {
+      this.setState(() => {
+        return {
+          nodes: newNodes, links: newLinks
+        };
+      });
+    }
+  }
+  
+  createNodePropForState(nodeData) {
+    return {
+      renderProps: {
+        key: nodeData.id, x: nodeData.x, y: nodeData.y
+      }, meta: {
+        ...nodeData
+      }
+    };
+  }
+  
+  createLinkPropForState(linkData) {
+    return {
+      className: 'aai-entity-link',
+      x1: linkData.source.x,
+      y1: linkData.source.y,
+      x2: linkData.target.x,
+      y2: linkData.target.y
+    };
+  }
+  
+  startSimulation(graphData) {
+    this.nodeFactory.setNodeMeta(graphData.graphMeta);
+    
+    // Experiment with removing length = 0... might not be needed as new array
+    // assignment will likely destroy old reference
+    this.nodeBuffer.length = 0;
+    this.nodeBuffer = Array.from(graphData.nodeDataArray);
+    this.linkBuffer.length = 0;
+    this.linkBuffer = Array.from(graphData.linkDataArray);
+    this.nodeDatum.length = 0;
+    this.nodeDatum = Array.from(graphData.nodeDataArray);
+    
+    this.nodeButtonDatum.length = 0;
+    
+    let isNodeDetailsSelected = true;
+    this.nodeButtonDatum.push({
+      name: NodeConstants.ICON_ELLIPSES, isSelected: isNodeDetailsSelected
+    });
+    
+    if (isNodeDetailsSelected) {
+      this.currentlySelectedNodeButton = NodeConstants.ICON_ELLIPSES;
+    }
+    
+    this.updateSimulationForce();
+    
+    this.simulation.nodes(this.nodeBuffer);
+    this.simulation.force('link').links(this.linkBuffer);
+    this.simulation.on('tick', this.simulationTick);
+    this.simulation.restart();
+  }
+  
+  simulationComplete() {
+    this.intervalTimer.stop();
+    this.applyBufferDataToState();
+  }
+  
+  simulationTick() {
+    this.intervalTimer.restart(this.applyBufferDataToState, simulationKeys.DATA_COPY_INTERVAL);
+    this.simulation.on('tick', null);
+  }
+  
+  nodeSelected(datum) {
+    if (this.props.nodeSelectedCallback) {
+      this.props.nodeSelectedCallback(datum);
+    }
+    
+    let didUpdateNew = false;
+    let didUpdatePrevious = false;
+    let isSameNodeSelected = true;
+    
+    // Check to see if a default node was previously selected
+    let selectedDefaultNode = select('.fdgMainSvg').select('.fdgMainG')
+                                                   .selectAll('.aai-entity-node')
+                                                   .filter('.selected-node');
+    if (!selectedDefaultNode.empty()) {
+      if (selectedDefaultNode.datum().id !== datum.id) {
+        this.nodeBuffer[selectedDefaultNode.datum().index].nodeMeta.className =
+          NodeConstants.GENERAL_NODE_CLASS_NAME;
+        didUpdatePrevious = true;
+        isSameNodeSelected = false;
+      }
+    }
+    
+    // Check to see if a searched node was previously selected
+    let selectedSearchedNode = select('.fdgMainSvg').select('.fdgMainG')
+                                                    .selectAll('.aai-entity-node')
+                                                    .filter('.selected-search-node');
+    if (!selectedSearchedNode.empty()) {
+      if (selectedSearchedNode.datum().id !== datum.id) {
+        this.nodeBuffer[selectedSearchedNode.datum().index].nodeMeta.className =
+          NodeConstants.SEARCHED_NODE_CLASS_NAME;
+        didUpdatePrevious = true;
+        isSameNodeSelected = false;
+      }
+    }
+    
+    if (!isSameNodeSelected) {
+      let newlySelectedNode = select('.fdgMainSvg').select('.fdgMainG')
+                                                   .selectAll('.aai-entity-node')
+                                                   .filter((d) => {
+                                                     return (datum.id === d.id);
+                                                   });
+      if (!newlySelectedNode.empty()) {
+        
+        if (newlySelectedNode.datum().nodeMeta.searchTarget) {
+          this.nodeBuffer[newlySelectedNode.datum().index].nodeMeta.className =
+            NodeConstants.SELECTED_SEARCHED_NODE_CLASS_NAME;
+        } else {
+          this.nodeBuffer[newlySelectedNode.datum().index].nodeMeta.className =
+            NodeConstants.SELECTED_NODE_CLASS_NAME;
+        }
+        didUpdateNew = true;
+      }
+    }
+    
+    if (didUpdatePrevious && didUpdateNew) {
+      this.newNodeSelected = true;
+      this.applyBufferDataToState();
+    }
+  }
+
+  onZoom(eventTransform) {
+    if (this.isGraphMounted) {
+      this.setState(() => {
+        return {
+          mainGroupTransform: eventTransform
+        };
+      });
+    }
+  }
+  
+  onGraphDrag(xAndYCoords) {
+    let translate = `translate(${xAndYCoords.x}, ${xAndYCoords.y})`;
+    let oldTransform = this.state.mainGroupTransform;
+    if (this.isGraphMounted) {
+      this.setState(() => {
+        return {
+          ...oldTransform, translate
+        };
+      });
+    }
+  }
+  
+  onNodeDrag(datum, xAndYCoords) {
+    let nodeIndex = this.nodeIndexTracker.get(datum.id);
+    if (this.nodeBuffer[nodeIndex]) {
+      this.nodeBuffer[nodeIndex].x = xAndYCoords[0];
+      this.nodeBuffer[nodeIndex].y = xAndYCoords[1];
+      this.applyBufferDataToState();
+    }
+  }
+  
+  addNodeInterpolator(nodeId, key, startingValue, endingValue, duration) {
+    let numberInterpolator = interpolateNumber(startingValue, endingValue);
+    let timeNow = now();
+    let interpolationObject = {
+      nodeId: nodeId, key: key, duration: duration, timeCreated: timeNow, method: numberInterpolator
+    };
+    this.interpolators.set(nodeId, interpolationObject);
+    
+    if (!this.areInterpolationsRunning) {
+      this.interpolationTimer.restart(this.runInterpolators, simulationKeys.DATA_COPY_INTERVAL);
+      this.areInterpolationsRunning = true;
+    }
+  }
+  
+  runInterpolators() {
+    // If we have no more interpolators to run then shut'r down!
+    if (this.interpolators.size === 0) {
+      this.interpolationTimer.stop();
+      this.areInterpolationsRunning = false;
+    }
+    
+    let iterpolatorsComplete = [];
+    // Apply interpolation values
+    this.interpolators.forEach((interpolator) => {
+      let nodeIndex = this.nodeIndexTracker.get(interpolator.nodeId);
+      if (nodeIndex) {
+        let elapsedTime = now() - interpolator.timeCreated;
+        // Normalize t as D3's interpolateNumber needs a value between 0 and 1
+        let t = elapsedTime / interpolator.duration;
+        if (t >= 1) {
+          t = 1;
+          iterpolatorsComplete.push(interpolator.nodeId);
+        }
+        this.nodeBuffer[nodeIndex][interpolator.key] = interpolator.method(t);
+      }
+    });
+    
+    // Remove any interpolators that are complete
+    if (iterpolatorsComplete.length > 0) {
+      for (let i = 0; i < iterpolatorsComplete.length; i++) {
+        this.interpolators.delete(iterpolatorsComplete[i]);
+      }
+    }
+    
+    this.applyBufferDataToState();
+  }
+  
+  render() {
+    // We will be using these values veru shortly, commenting out for eslint
+    // reasons so we can build for PV let {viewWidth, viewHeight} = this.props;
+    let {nodes, links, mainGroupTransform} = this.state;
+    
+    return (
+      <div className='ts-force-selected-graph'>
+        <svg className={'fdgMainSvg'} width='100%' height='100%'>
+          <rect className={'fdgMainView'} x='0.5' y='0.5' width='99%'
+                height='99%' fill='none'/>
+          <filter id='selected-node-drop-shadow'>
+            <feGaussianBlur in='SourceAlpha' stdDeviation='2.2'/>
+            <feOffset dx='-1' dy='1' result='offsetblur'/>
+            <feFlood floodColor='rgba(0,0,0,0.5)'/>
+            <feComposite in2='offsetblur' operator='in'/>
+            <feMerge>
+              <feMergeNode/>
+              <feMergeNode in='SourceGraphic'/>
+            </feMerge>
+          </filter>
+          <g className={'fdgMainG'} transform={mainGroupTransform}>
+            {links}
+            {nodes}
+          </g>
+        </svg>
+      </div>
+    );
+  }
+  
+  static graphCounter = 0;
+  
+  static generateNewProps(nodeArray, linkArray, metaData) {
+    ForceDirectedGraph.graphCounter += 1;
+    return {
+      graphCounter: ForceDirectedGraph.graphCounter,
+      nodeDataArray: nodeArray,
+      linkDataArray: linkArray,
+      graphMeta: metaData
+    };
+  }
+}
+
+export default ForceDirectedGraph;