@antv/g6
Version:
A Graph Visualization Framework in JavaScript
175 lines • 7.45 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CreateEdge = void 0;
const util_1 = require("@antv/util");
const constants_1 = require("../constants");
const base_behavior_1 = require("./base-behavior");
const ASSIST_EDGE_ID = 'g6-create-edge-assist-edge-id';
const ASSIST_NODE_ID = 'g6-create-edge-assist-node-id';
/**
* <zh/> 创建边交互
*
* <en/> Create edge behavior
* @remarks
* <zh/> 通过拖拽或点击节点创建边，支持自定义边样式。
*
* <en/> Create edges by dragging or clicking nodes, and support custom edge styles.
*/
class CreateEdge extends base_behavior_1.BaseBehavior {
constructor(context, options) {
super(context, Object.assign({}, CreateEdge.defaultOptions, options));
this.drop = (event) => __awaiter(this, void 0, void 0, function* () {
const { targetType } = event;
if (['combo', 'node'].includes(targetType) && this.source) {
yield this.handleCreateEdge(event);
}
else {
yield this.cancelEdge();
}
});
this.handleCreateEdge = (event) => __awaiter(this, void 0, void 0, function* () {
var _a, _b, _c;
if (!this.validate(event))
return;
const { graph, canvas, batch, element } = this.context;
const { style } = this.options;
if (this.source) {
this.createEdge(event);
yield this.cancelEdge();
return;
}
batch.startBatch();
canvas.setCursor('crosshair');
this.source = this.getSelectedNodeIDs([event.target.id])[0];
const sourceNode = graph.getElementData(this.source);
graph.addNodeData([
{
id: ASSIST_NODE_ID,
style: {
visibility: 'hidden',
ports: [{ key: 'port-1', placement: [0.5, 0.5] }],
x: (_a = sourceNode.style) === null || _a === void 0 ? void 0 : _a.x,
y: (_b = sourceNode.style) === null || _b === void 0 ? void 0 : _b.y,
},
},
]);
graph.addEdgeData([
{
id: ASSIST_EDGE_ID,
source: this.source,
target: ASSIST_NODE_ID,
style: Object.assign({ pointerEvents: 'none' }, style),
},
]);
yield ((_c = element.draw({ animation: false })) === null || _c === void 0 ? void 0 : _c.finished);
});
this.updateAssistEdge = (event) => __awaiter(this, void 0, void 0, function* () {
var _a;
if (!this.source)
return;
const { model, element } = this.context;
model.translateNodeTo(ASSIST_NODE_ID, [event.canvas.x, event.canvas.y]);
yield ((_a = element.draw({ animation: false, silence: true })) === null || _a === void 0 ? void 0 : _a.finished);
});
this.createEdge = (event) => {
var _a, _b;
const { graph } = this.context;
const { style, onFinish, onCreate } = this.options;
const targetId = (_a = event.target) === null || _a === void 0 ? void 0 : _a.id;
if (targetId === undefined || this.source === undefined)
return;
const target = (_b = this.getSelectedNodeIDs([event.target.id])) === null || _b === void 0 ? void 0 : _b[0];
const id = `${this.source}-${target}-${(0, util_1.uniqueId)()}`;
const edgeData = onCreate({ id, source: this.source, target, style });
if (edgeData) {
graph.addEdgeData([edgeData]);
onFinish(edgeData);
}
};
this.cancelEdge = () => __awaiter(this, void 0, void 0, function* () {
var _a;
if (!this.source)
return;
const { graph, element, batch } = this.context;
graph.removeNodeData([ASSIST_NODE_ID]);
this.source = undefined;
yield ((_a = element.draw({ animation: false })) === null || _a === void 0 ? void 0 : _a.finished);
batch.endBatch();
});
this.bindEvents();
}
/**
* Update options
* @param options - The options to update
* @internal
*/
update(options) {
super.update(options);
this.bindEvents();
}
bindEvents() {
const { graph } = this.context;
const { trigger } = this.options;
this.unbindEvents();
if (trigger === 'click') {
graph.on(constants_1.NodeEvent.CLICK, this.handleCreateEdge);
graph.on(constants_1.ComboEvent.CLICK, this.handleCreateEdge);
graph.on(constants_1.CanvasEvent.CLICK, this.cancelEdge);
graph.on(constants_1.EdgeEvent.CLICK, this.cancelEdge);
}
else {
graph.on(constants_1.NodeEvent.DRAG_START, this.handleCreateEdge);
graph.on(constants_1.ComboEvent.DRAG_START, this.handleCreateEdge);
graph.on(constants_1.CommonEvent.POINTER_UP, this.drop);
}
graph.on(constants_1.CommonEvent.POINTER_MOVE, this.updateAssistEdge);
}
getSelectedNodeIDs(currTarget) {
return Array.from(new Set(this.context.graph
.getElementDataByState('node', this.options.state)
.map((node) => node.id)
.concat(currTarget)));
}
validate(event) {
if (this.destroyed)
return false;
const { enable } = this.options;
if ((0, util_1.isFunction)(enable))
return enable(event);
return !!enable;
}
unbindEvents() {
const { graph } = this.context;
graph.off(constants_1.NodeEvent.CLICK, this.handleCreateEdge);
graph.off(constants_1.ComboEvent.CLICK, this.handleCreateEdge);
graph.off(constants_1.CanvasEvent.CLICK, this.cancelEdge);
graph.off(constants_1.EdgeEvent.CLICK, this.cancelEdge);
graph.off(constants_1.NodeEvent.DRAG_START, this.handleCreateEdge);
graph.off(constants_1.ComboEvent.DRAG_START, this.handleCreateEdge);
graph.off(constants_1.CommonEvent.POINTER_UP, this.drop);
graph.off(constants_1.CommonEvent.POINTER_MOVE, this.updateAssistEdge);
}
destroy() {
this.unbindEvents();
super.destroy();
}
}
exports.CreateEdge = CreateEdge;
CreateEdge.defaultOptions = {
animation: true,
enable: true,
style: {},
trigger: 'drag',
onCreate: (data) => data,
onFinish: () => { },
};
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