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Scripting.js
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926 lines (745 loc) · 27.2 KB
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/// <reference path="JsDiagram-vsdoc.js" />
var Events = MindFusion.Diagramming.Events;
var DiagramView = MindFusion.Diagramming.DiagramView;
var Diagram = MindFusion.Diagramming.Diagram;
var ControlNode = MindFusion.Diagramming.ControlNode;
var HandlesStyle = MindFusion.Diagramming.HandlesStyle;
var AnchorPattern = MindFusion.Diagramming.AnchorPattern;
var AnchorPoint = MindFusion.Diagramming.AnchorPoint;
var MarkStyle = MindFusion.Diagramming.MarkStyle;
var Rect = MindFusion.Drawing.Rect;
var diagramView = null;
var diagram = null;
var tracing = false;
var currentNode = null, variableListNode = null;
var currentScope = {};
document.addEventListener('DOMContentLoaded', (event) => {
Diagram.registerClass(ScriptedNode, "ScriptedNode", "cnScriptedNode", 1, ControlNode);
Diagram.registerClass(TerminatorNode, "TerminatorNode", "cnTerminator", 1, ScriptedNode);
Diagram.registerClass(OperationNode, "OperationNode", "cnOperation", 1, ScriptedNode);
Diagram.registerClass(FunctionNode, "FunctionNode", "cnFunction", 1, ScriptedNode);
Diagram.registerClass(VariableListNode, "VariableListNode", "cnVarList", 1, ScriptedNode);
// create a DiagramView component that wraps the "diagram" canvas
diagramView = DiagramView.create(document.querySelector("#diagram"));
diagramView.behavior = MindFusion.Diagramming.Behavior.DrawLinks;
diagramView.modificationStart = MindFusion.Diagramming.ModificationStart.AutoHandles;
diagram = diagramView.diagram;
diagram.routeLinks = true;
diagram.showAnchors = MindFusion.Diagramming.ShowAnchors.Always;
diagram.roundedLinks = true;
diagram.linkShape = MindFusion.Diagramming.LinkShape.Cascading;
diagram.linkHeadShape = "Triangle";
diagram.linkHeadShapeSize = 3;
diagram.shadowOffsetX = 0;
diagram.shadowOffsetY = 0;
// Create the special variable list node
variableListNode = new VariableListNode(diagramView);
variableListNode.bounds = new Rect(0, 0, 60, 80);
variableListNode.zIndex = 10000;
variableListNode.visible = false;
diagram.addItem(variableListNode);
updateVariableListPosition();
diagram.addEventListener(Events.nodeSelected, onNodeSelected);
diagram.addEventListener(Events.nodeDeselected, onNodeDeselected);
diagram.addEventListener(Events.linkCreating, onLinkCreating);
diagram.addEventListener(Events.nodeCreated, onNodeCreated);
diagramView.scrollElementH().addEventListener("scroll", onScroll.bind(this));
diagramView.scrollElementH().style.zIndex = 4;
diagramView.scrollElementV().addEventListener("scroll", onScroll.bind(this));
diagramView.scrollElementV().style.zIndex = 4;
window.addEventListener("resize", onResize.bind(this));
document.querySelector("button#stopButton").disabled = true;
onLoad();
});
function onScroll() {
this.updateVariableListPosition();
}
function onResize() {
this.updateVariableListPosition();
}
function onDiagramLoaded() {
// Obtain a reference to the new variable list node
for (var i = 0; i < diagram.nodes.length; i++) {
var variableList = diagram.nodes[i];
if (variableList instanceof VariableListNode) {
variableListNode = variableList;
break;
}
}
}
function updateVariableListPosition() {
var viewport = diagramView.viewport;
var nodeBounds = variableListNode.bounds;
variableListNode.bounds = new Rect(
viewport.right() - nodeBounds.width - 2,
viewport.bottom() - nodeBounds.height - 2,
nodeBounds.width, nodeBounds.height);
}
function bringIntoView(node) {
var viewRect = diagramView.viewport;
var nodeRect = node.bounds;
diagramView.scrollX = nodeRect.center().x - viewRect.width / 2;
diagramView.scrollY = nodeRect.center().y - viewRect.height / 2;
}
function validateProcess() {
// Check for connectivity
var graph = new MindFusion.Graphs.Graph();
var vertexMap = new Map();
var edgeMap = new Map();
for (var i = 0; i < diagram.nodes.length; i++) {
var node = diagram.nodes[i];
if (node instanceof VariableListNode)
continue;
if (node instanceof FunctionNode)
continue;
vertexMap.set(node, graph.createVertex());
}
for (var i = 0; i < diagram.links.length; i++) {
var link = diagram.links[i];
var origin = vertexMap.get(link.origin);
var destination = vertexMap.get(link.destination);
edgeMap.set(link, graph.createEdge(origin, destination));
}
if (graph.getConnectedComponents().length > 1) {
alert("Validation failed! The process contains disconnected components.");
return false;
}
// Check for start/end nodes
var hasStart = false;
var hasEnd = false;
for (var i = 0; i < diagram.nodes.length; i++) {
var terminator = diagram.nodes[i];
if (!(terminator instanceof TerminatorNode))
continue;
if (terminator.getTerminatorType() == TerminatorNodeType.Start)
hasStart = true;
else if (terminator.getTerminatorType() == TerminatorNodeType.End)
hasEnd = true;
}
if (!hasStart) {
alert("Validation failed! The process does not have a start node.");
return false;
}
if (!hasEnd) {
alert("Validation failed! The process does not have an end node.");
return false;
}
// Process function nodes and Check for missing links - all out anchors must have links
for (var i = 0; i < diagram.nodes.length; i++) {
var functionNode = diagram.nodes[i];
if (functionNode instanceof FunctionNode) {
// create the defined function and add it to the window scope
var functionName = functionNode.getFunctionName();
var functionParams = functionNode.getParameterNames();
var functionBody = functionNode.getCode();
window[functionName] = new Function(functionParams, functionBody);
continue;
}
var operation = diagram.nodes[i];
if (!(operation instanceof OperationNode))
continue;
if (operation.getOperationType() == OperationType.Choice) {
if (operation.incomingLinks.links == 0) {
diagram.selection.change(operation);
alert("Validation failed! A choice has an undefined input.");
return false;
}
if (operation.outgoingLinks.length != 2) {
diagram.selection.change(operation);
alert("Validation failed! A choice has an undefined output.");
return false;
}
}
else if (operation.getOperationType() == OperationType.Operation) {
if (operation.incomingLinks.length == 0) {
diagram.selection.change(operation);
alert("Validation failed! An operation has an undefined input.");
return false;
}
if (operation.outgoingLinks.length != 1) {
diagram.selection.change(operation);
alert("Validation failed! An operation has an undefined output.");
return false;
}
}
}
return true;
}
function findStartNode() {
for (var i = 0; i < diagram.nodes.length; i++) {
var terminator = diagram.nodes[i];
if (!(terminator instanceof TerminatorNode))
continue;
if (terminator.getTerminatorType() == TerminatorNodeType.Start)
return terminator;
}
}
function findFunctionNode(functionName) {
for (var i = 0; i < diagram.nodes.length; i++) {
var functionNode = diagram.nodes[0];
if (functionNode instanceof FunctionNode) {
if (functionNode.getName() == name)
return functionNode;
}
}
return null;
}
function findTrueLink(node) {
for (var i = 0; i < node.outgoingLinks.length; i++) {
var link = node.outgoingLinks[i];
if (link.originAnchor == 1)
return link;
}
return null;
}
function findFalseLink(node) {
for (var i = 0; i < node.outgoingLinks.length; i++) {
var link = node.outgoingLinks[i];
if (link.originAnchor == 2)
return link;
}
return null;
}
function process(node, scope) {
var terminator = node;
if (terminator instanceof TerminatorNode) {
if (terminator.getTerminatorType() == TerminatorNodeType.End)
return null;
if (terminator.getTerminatorType() == TerminatorNodeType.Start)
return terminator.outgoingLinks[0].destination;
throw new Error("Invalid terminator.");
}
var operation = node;
if (operation instanceof OperationNode) {
var code = operation.getCode();
var result = execute(code, scope);
variableListNode.updateVariableValues(scope);
if (operation.getOperationType() == OperationType.Operation)
return operation.outgoingLinks[0].destination;
if (operation.getOperationType() == OperationType.Choice) {
if (result == null)
throw new Error("Failed to evaluate choice.");
if (result)
return findTrueLink(operation).destination;
else
return findFalseLink(operation).destination;
}
}
throw new Error("Invalid process.");
}
function execute(expression, scope) {
return new Function(expression).bind(scope)();
}
function stopRun() {
variableListNode.visible = false;
clearHighlight();
var createButtons = document.querySelectorAll("button.createbutton");
for (var i = 0; i < createButtons.length; i++)
createButtons[i].disabled = false;
document.querySelector("button#validateButton").disabled = false;
document.querySelector("button#runButton").disabled = false;
document.querySelector("select#preset").disabled = false;
document.querySelector("button#loadButton").disabled = false;
document.querySelector("button#stepRunButton").value = "Step by step";
document.querySelector("button#stopButton").disabled = true;
tracing = false;
}
function clearHighlight() {
for (var i = 0; i < diagram.nodes.length; i++) {
var scriptedNode = diagram.nodes[i];
if (scriptedNode.hideHighlight)
scriptedNode.hideHighlight();
}
}
function onNodeSelected(sender, args) {
var node = args.node;
if (node.onSelected)
node.onSelected();
}
function onNodeDeselected(sender, args) {
var node = args.node;
if (node.onDeselected)
node.onDeselected();
}
function onLinkCreating(sender, args) {
// Prevent two links going out of the same anchor point
for (var i = 0; i < args.link.origin.outgoingLinks.length; i++) {
var link = args.link.origin.outgoingLinks[i];
if (link.originAnchor == args.link.originAnchor) {
args.cancel = true;
return;
}
}
// Prevent self loops
if (!args.link.targetConnection)
return;
if (args.link.origin == args.link.targetConnection.node) {
args.cancel = true;
}
}
function onNodeCreated(sender, args) {
}
function onStartNode() {
diagram.selection.clear();
for (var i = 0; i < diagram.nodes.length; i++) {
var terminator = diagram.nodes[i];
if (!(terminator instanceof TerminatorNode))
continue;
if (terminator.getTerminatorType() != TerminatorNodeType.Start)
continue;
terminator.selected = true;
bringIntoView(terminator);
return;
}
var node = new TerminatorNode(diagramView);
node.bounds = new Rect(20 + diagramView.scrollX, 20 + diagramView.scrollY, 36, 12);
node.setTerminatorType(TerminatorNodeType.Start);
node.selected = true;
diagram.addItem(node);
}
function onEndNode() {
diagram.selection.clear();
for (var i = 0; i < diagram.nodes.length; i++) {
var terminator = diagram.nodes[i];
if (!(terminator instanceof TerminatorNode))
continue;
if (terminator.getTerminatorType() != TerminatorNodeType.End)
continue;
terminator.selected = true;
bringIntoView(terminator);
return;
}
var node = new TerminatorNode(diagramView);
node.bounds = new Rect(20 + diagramView.scrollX, 20 + diagramView.scrollY, 36, 12);
node.setTerminatorType(TerminatorNodeType.End);
node.selected = true;
diagram.addItem(node);
}
function onOperation() {
diagram.selection.clear();
var node = new OperationNode(diagramView);
node.setOperationType(OperationType.Operation);
node.bounds = new Rect(20 + diagramView.scrollX, 20 + diagramView.scrollY, 60, 40);
node.selected = true;
diagram.addItem(node);
}
function onChoice() {
diagram.selection.clear();
var node = new OperationNode(diagramView);
node.setOperationType(OperationType.Choice);
node.bounds = new Rect(20 + diagramView.scrollX, 20 + diagramView.scrollY, 60, 40);
node.selected = true;
diagram.addItem(node);
}
function onFunction() {
diagram.selection.clear();
var node = new FunctionNode(diagramView);
node.bounds = new Rect(20 + diagramView.scrollX, 20 + diagramView.scrollY, 60, 40);
node.selected = true;
diagram.addItem(node);
}
function onClear() {
for (var i = 0; i < diagram.nodes.length;) {
var node = diagram.nodes[i];
if (node instanceof VariableListNode) {
i++;
continue;
}
diagram.removeItem(node);
}
}
function onValidate() {
if (validateProcess()) {
alert("Validation successful!");
}
}
function onRun() {
variableListNode.clear();
if (!validateProcess())
return;
var node = findStartNode();
currentScope = {};
while (true) {
try {
node = process(node, currentScope);
variableListNode.updateVariableValues(currentScope);
}
catch (err) {
alert(err);
return;
}
if (node == null)
break;
}
}
function onNext() {
if (!tracing) {
if (!validateProcess())
return;
variableListNode.visible = true;
updateVariableListPosition();
tracing = true;
currentScope = {};
variableListNode.clear();
// Update UI
var createButtons = document.querySelectorAll("button.createbutton");
for (var i = 0; i < createButtons.length; i++)
createButtons[i].disabled = true;
document.querySelector("button#validateButton").disabled = true;
document.querySelector("button#runButton").disabled = true;
document.querySelector("select#preset").disabled = true;
document.querySelector("button#loadButton").disabled = true;
document.querySelector("button#stepRunButton").value = "Next";
document.querySelector("button#stopButton").disabled = false;
currentNode = findStartNode();
currentNode.showHighlight();
bringIntoView(currentNode);
}
else {
try {
var previousNode = currentNode;
currentNode = process(previousNode, currentScope);
variableListNode.updateVariableValues(currentScope);
previousNode.hideHighlight();
if (currentNode != null) {
currentNode.showHighlight();
bringIntoView(currentNode);
}
else {
stopRun();
}
}
catch (err) {
alert(err);
stopRun();
}
}
}
function onStop() {
stopRun();
}
function onLoad() {
diagramView.loadFromXml(document.querySelector("#preset").value, onDiagramLoaded);
}
var VariableListNode = function (parent) {
var _this = ScriptedNode.call(this, parent);
_this.allowIncomingLinks = false;
_this.allowOutgoingLinks = false;
_this.locked = true;
_this.template = `<div class="root variableList" style="background-color: rgba(240, 240, 240, 0.5);">
<span style="font-weight: bold; margin: 10px; cursor: move;">Variables List</span>
<div class="variablesDisplay"><span id="varValues"></span></div>
</div>`;
return _this;
};
VariableListNode.prototype =
{
attachHandlers: function () {
ScriptedNode.prototype.attachHandlers.call(this);
},
updateVariableValues: function (scope) {
if (!this.content)
return;
var span = document.querySelector("span#varValues");
span.innerHTML = " ";
for (var i in scope) {
span.innerHTML += `${i}: ${scope[i]}` + '<br />';
}
},
clear: function () {
if (this.content)
document.querySelector("span#varValues").innerHTML = " ";
}
};
var FunctionNode = function (parent) {
var _this = ScriptedNode.call(this, parent);
_this.allowIncomingLinks = false;
_this.allowOutgoingLinks = false;
_this.title = " ";
_this.code = " ";
_this.template = `<div class="root function" style="background-color: Orange;">
<span style="font-weight: bold; margin: 10px; cursor: move;">Function</span>
<input class="functionname" data-interactive="true"></input>
<textarea class="functioncode" data-interactive="true"></textarea>
</div>`;
return _this;
};
FunctionNode.prototype =
{
attachHandlers: function () {
ScriptedNode.prototype.attachHandlers.call(this);
if (this.title != " ")
this.content.querySelector("input.functionname").value = this.title;
if (this.code != " ")
this.content.querySelector("textarea.functioncode").value = this.code;
},
getCode: function () {
if (this.content)
this.code = this.content.querySelector("textarea.functioncode").value;
return this.code;
},
setCode: function (value) {
if (this.code == value)
return;
this.code = value;
if (this.content)
this.content.querySelector("textarea.functioncode").value = this.code;
},
getTitleText: function () {
if (this.content)
this.title = this.content.querySelector("input.functionname").value;
return this.title;
},
setTitleText: function (value) {
if (this.title == value)
return;
this.title = value;
if (this.content)
this.content.querySelector("input.functionname").value = this.title;
},
getFunctionName: function () {
var title = this.getTitleText().trim();
var bracket = title.indexOf('(');
if (bracket == -1)
return title;
return title.substring(0, bracket).trim();
},
getParameterNames: function () {
// Add the function arguments
var title = this.getTitleText();
var regex = /\(.*\)/;
var matches = title.match(regex);
if (matches && matches.length > 0) {
var parameters = matches[0];
parameters = parameters.substring(1, parameters.length - 1).trim();
return parameters.split(',');
}
return null;
},
loadFromXml: function (xmlElement, context) {
ScriptedNode.prototype.loadFromXml.call(this, xmlElement, context);
this.setTitleText(context.readString("Title", xmlElement));
this.setCode(context.readString("Code", xmlElement));
},
saveToXml: function (xmlElement, context) {
ScriptedNode.prototype.saveToXml.call(this, xmlElement, context);
context.writeString(this.getTitleText(), "Title", xmlElement);
context.writeString(this.getCode(), "Code", xmlElement);
}
};
var OperationNode = function (parent) {
var _this = ScriptedNode.call(this, parent);
_this.operationType = OperationType.Unspecified;
_this.title = " ";
_this.code = " ";
_this.template = `<div class="root operation">
<span class="operationtitle"></span>
<textarea class="operationcode" data-interactive="true"></textarea>
</div>`;
return _this;
};
OperationNode.prototype =
{
attachHandlers: function () {
ScriptedNode.prototype.attachHandlers.call(this);
if (this.operationType != OperationType.Unspecified)
this.setOperationType(this.operationType);
if (this.title != " ")
this.content.querySelector("span.operationtitle").innerHTML = this.title;
if (this.code != " ")
this.content.querySelector("textarea.operationcode").value = this.code;
},
getOperationType: function () {
return this.operationType;
},
setOperationType: function (value) {
this.operationType = value;
if (this.content == undefined)
return;
if (this.operationType == OperationType.Operation) {
this.setTitleText("Operation");
this.anchorPattern = new AnchorPattern([
new AnchorPoint(50, 0, true, false, MarkStyle.Rectangle, "black", 6),
new AnchorPoint(50, 100, false, true, MarkStyle.Rectangle, "black", 6),
]);
this.anchorPattern.points[0].tag = 0;
this.anchorPattern.points[1].tag = 3;
}
else if (this.operationType == OperationType.Choice) {
this.setTitleText("Choice");
this.anchorPattern = new AnchorPattern([
new AnchorPoint(50, 0, true, false, MarkStyle.Circle, "black", 6),
new AnchorPoint(50, 100, false, true, MarkStyle.Circle, "green", 6),
new AnchorPoint(100, 50, false, true, MarkStyle.Circle, "red", 6),
]);
this.anchorPattern.points[0].tag = 0;
this.anchorPattern.points[1].tag = 1;
this.anchorPattern.points[2].tag = 2;
}
else {
this.anchorPattern = null;
this.setTitleText(" ");
}
},
getCode: function () {
if (this.content)
this.code = this.content.querySelector("textarea.operationcode").value;
if (this.operationType == OperationType.Choice && this.code.indexOf("return ") < 0)
return "return " + this.code;
return this.code;
},
setCode: function (value) {
if (this.code == value)
return;
this.code = value;
if (this.content)
this.content.querySelector("textarea.operationcode").value = this.code;
},
getTitleText: function () {
return this.title;
},
setTitleText: function (value) {
if (this.title == value)
return;
this.title = value;
if (this.content)
this.content.querySelector("span.operationtitle").innerHTML = this.title;
},
loadFromXml: function (xmlElement, context) {
ScriptedNode.prototype.loadFromXml.call(this, xmlElement, context);
this.setOperationType(context.readInt("Type", xmlElement));
this.setCode(context.readString("Code", xmlElement));
},
saveToXml: function (xmlElement, context) {
ScriptedNode.prototype.saveToXml.call(this, xmlElement, context);
context.writeInt(this.operationType, "Type", xmlElement);
context.writeString(this.getCode(), "Code", xmlElement);
}
};
var TerminatorNode = function (parent) {
var _this = ScriptedNode.call(this, parent);
_this.allowIncomingLinks = false;
_this.allowOutgoingLinks = false;
_this.terminatorType = TerminatorNodeType.Unspecified;
_this.textContent = ' ';
_this.template = `<div class="root terminator"><span class="terminatortext"></span></div>`;
return _this;
};
TerminatorNode.prototype =
{
attachHandlers: function () {
ScriptedNode.prototype.attachHandlers.call(this);
if (this.terminatorType != TerminatorNodeType.Unspecified)
this.setTerminatorType(this.terminatorType);
if (this.textContent != ' ')
this.content.querySelector("span.terminatortext").innerHTML = this.textContent;
},
getTerminatorType: function () {
return this.terminatorType;
},
setTerminatorType: function (value) {
this.terminatorType = value;
if (this.content == undefined)
return;
if (this.terminatorType == TerminatorNodeType.Start) {
this.setBackground("rgb(102, 154, 204)");
this.textColor = "White";
this.setTextContent("Start");
this.allowIncomingLinks = false;
this.allowOutgoingLinks = true;
}
else if (this.terminatorType == TerminatorNodeType.End) {
this.setBackground("rgb(206, 0, 0)");
this.textColor = "White";
this.setTextContent("End");
this.allowIncomingLinks = true;
this.allowOutgoingLinks = false;
}
else {
this.setBackground("rgb(240, 240, 240)");
this.setTextContent(" ");
this.allowIncomingLinks = false;
this.allowOutgoingLinks = false;
}
},
getTextContent: function () {
return this.textContent;
},
setTextContent: function (value) {
if (this.textContent == value)
return;
this.textContent = value;
if (this.content)
this.content.querySelector("span.terminatortext").innerHTML = value;
},
loadFromXml: function (xmlElement, context) {
ScriptedNode.prototype.loadFromXml.call(this, xmlElement, context);
this.setTerminatorType(context.readInt("Type", xmlElement));
},
saveToXml: function (xmlElement, context) {
ScriptedNode.prototype.saveToXml.call(this, xmlElement, context);
context.writeInt(this.terminatorType, "Type", xmlElement);
}
};
var ScriptedNode = function (parent) {
var _this = ControlNode.call(this, parent);
_this.template = `<div class="root"></div>`;
_this.selected = false;
_this.highlight = false;
_this.background = "#F0F0F0";
return _this;
};
ScriptedNode.prototype =
{
attachHandlers: function () {
ControlNode.prototype.attachHandlers.call(this);
if (this.selected)
this.onSelected();
if (this.highlight)
this.showHighlight();
if (this.background != "#F0F0F0")
this.content.querySelector("div.root").style.backgroundColor = this.background;
},
onSelected: function () {
this.selected = true;
if (this.content)
this.content.classList.add("selected");
},
onDeselected: function () {
this.selected = false;
if (this.content)
this.content.classList.remove("selected");
},
showHighlight: function () {
this.highlight = true;
if (this.content)
this.content.classList.add("highlight");
},
hideHighlight: function () {
this.highlight = false;
if (this.content)
this.content.classList.remove("highlight");
},
getBackground: function () {
return this.background;
},
setBackground: function (value) {
if (this.background == value)
return;
this.background = value;
if (this.content)
this.content.querySelector("div.root").style.backgroundColor = this.background;
}
};
var TerminatorNodeType =
{
Unspecified: 0,
Start: 1,
End: 2
};
var OperationType =
{
Unspecified: 0,
Operation: 1,
Choice: 2
}