fsm-designer/js/FSMDocument.js

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JavaScript
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class FSMDocument {
constructor(name) {
this.id = guid();
this.name = null;
this.createdAt = Date.now();
this.lastModified = Date.now();
this.element = null;
this.unsaved = true;
this.lastSavedHash = '';
this.states = [];
this.connections = [];
}
tick() {
this.states.forEach(stateA => {
this.states.forEach(stateB => {
if (stateA !== stateB && stateA.intersects(stateB)) {
const inter = stateA.intersection(stateB);
const angle1 = stateA.directionTo(stateB);
const angle2 = angle1 + Math.PI;
const x1 = Math.cos(angle1) * inter + stateA.x;
const y1 = Math.sin(angle1) * inter + stateA.y;
const x2 = Math.cos(angle2) * inter + stateB.x;
const y2 = Math.sin(angle2) * inter + stateB.y;
stateA.moveTo(x1, y1);
stateB.moveTo(x2, y2);
}
});
});
this.states.forEach(state => {
if (state.v) {
state.moveToStep();
}
});
if(!this.unsaved) {
if(this.hashCode() !== this.lastSavedHash) {
this.unsaved = true;
this.element.classList.add('unsaved');
}
}
}
draw() {
this.states.forEach(state => state.draw());
this.connections.forEach(connection => connection.draw());
}
onDblClick(x, y) {
if (!selectedObject) {
selectedObject = new State(x, y);
this.states.push(selectedObject);
resetCaret();
} else if (selectedObject instanceof State) {
selectedObject.isAcceptState = !selectedObject.isAcceptState;
}
}
deleteCurrentObject() {
if (!!selectedObject) {
if (selectedObject instanceof State) {
this.states.splice(this.states.findIndex(state => state === selectedObject), 1);
}
for (let i = 0; i < this.connections.length; i++) {
const con = this.connections[i];
if (con === selectedObject || con.state === selectedObject || con.stateA === selectedObject || con.stateB === selectedObject) {
this.connections.splice(i--, 1);
}
}
selectedObject = null;
}
}
}