@antv/g6
Version:
A Graph Visualization Framework in JavaScript
125 lines • 6.05 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BehaviorController = void 0;
const constants_1 = require("../constants");
const extension_1 = require("../registry/extension");
const element_1 = require("../utils/element");
const event_1 = require("../utils/event");
class BehaviorController extends extension_1.ExtensionController {
constructor(context) {
super(context);
/**
* <zh/> 当前事件的目标
*
* <en/> The current event target
*/
this.currentTarget = null;
this.currentTargetType = null;
this.category = 'behavior';
this.forwardCanvasEvents = (event) => {
const { target: originalTarget } = event;
const target = (0, event_1.eventTargetOf)(originalTarget);
if (!target)
return;
const { graph, canvas } = this.context;
const { type: targetType, element: targetElement } = target;
// 即将销毁或已销毁的元素不再触发事件
// Elements that are about to be destroyed or have been destroyed no longer trigger events
if ('destroyed' in targetElement && ((0, element_1.isToBeDestroyed)(targetElement) || targetElement.destroyed))
return;
const { type, detail, button } = event;
const stdEvent = Object.assign(Object.assign({}, event), { target: targetElement, targetType, originalTarget });
if (type === constants_1.CommonEvent.POINTER_MOVE) {
if (this.currentTarget !== targetElement) {
if (this.currentTarget) {
graph.emit(`${this.currentTargetType}:${constants_1.CommonEvent.POINTER_LEAVE}`, Object.assign(Object.assign({}, stdEvent), { type: constants_1.CommonEvent.POINTER_LEAVE, target: this.currentTarget, targetType: this.currentTargetType }));
}
if (targetElement) {
Object.assign(stdEvent, { type: constants_1.CommonEvent.POINTER_ENTER });
graph.emit(`${targetType}:${constants_1.CommonEvent.POINTER_ENTER}`, stdEvent);
}
}
this.currentTarget = targetElement;
this.currentTargetType = targetType;
}
// 非右键点击事件 / Click event except right click
if (!(type === constants_1.CommonEvent.CLICK && button === 2)) {
graph.emit(`${targetType}:${type}`, stdEvent);
graph.emit(type, stdEvent);
}
// 双击事件 / Double click event
if (type === constants_1.CommonEvent.CLICK && detail === 2) {
Object.assign(stdEvent, { type: constants_1.CommonEvent.DBLCLICK });
graph.emit(`${targetType}:${constants_1.CommonEvent.DBLCLICK}`, stdEvent);
graph.emit(constants_1.CommonEvent.DBLCLICK, stdEvent);
}
// 右键菜单 / Contextmenu
if (type === constants_1.CommonEvent.POINTER_DOWN && button === 2) {
Object.assign(stdEvent, {
type: constants_1.CommonEvent.CONTEXT_MENU,
preventDefault: () => {
var _a;
(_a = canvas.getContainer()) === null || _a === void 0 ? void 0 : _a.addEventListener(constants_1.CommonEvent.CONTEXT_MENU, (e) => e.preventDefault(), {
once: true,
});
},
});
graph.emit(`${targetType}:${constants_1.CommonEvent.CONTEXT_MENU}`, stdEvent);
graph.emit(constants_1.CommonEvent.CONTEXT_MENU, stdEvent);
}
};
this.forwardContainerEvents = (event) => {
this.context.graph.emit(event.type, event);
};
this.forwardEvents();
this.setBehaviors(this.context.options.behaviors || []);
}
setBehaviors(behaviors) {
this.setExtensions(behaviors);
}
forwardEvents() {
const container = this.context.canvas.getContainer();
if (container) {
[constants_1.ContainerEvent.KEY_DOWN, constants_1.ContainerEvent.KEY_UP].forEach((name) => {
container.addEventListener(name, this.forwardContainerEvents);
});
}
const canvas = this.context.canvas.document;
if (canvas) {
[
constants_1.CommonEvent.CLICK,
constants_1.CommonEvent.DBLCLICK,
constants_1.CommonEvent.POINTER_OVER,
constants_1.CommonEvent.POINTER_LEAVE,
constants_1.CommonEvent.POINTER_ENTER,
constants_1.CommonEvent.POINTER_MOVE,
constants_1.CommonEvent.POINTER_OUT,
constants_1.CommonEvent.POINTER_DOWN,
constants_1.CommonEvent.POINTER_UP,
constants_1.CommonEvent.CONTEXT_MENU,
constants_1.CommonEvent.DRAG_START,
constants_1.CommonEvent.DRAG,
constants_1.CommonEvent.DRAG_END,
constants_1.CommonEvent.DRAG_ENTER,
constants_1.CommonEvent.DRAG_OVER,
constants_1.CommonEvent.DRAG_LEAVE,
constants_1.CommonEvent.DROP,
constants_1.CommonEvent.WHEEL,
].forEach((name) => {
canvas.addEventListener(name, this.forwardCanvasEvents);
});
}
}
destroy() {
const container = this.context.canvas.getContainer();
if (container) {
[constants_1.ContainerEvent.KEY_DOWN, constants_1.ContainerEvent.KEY_UP].forEach((name) => {
container.removeEventListener(name, this.forwardContainerEvents);
});
}
this.context.canvas.document.removeAllEventListeners();
super.destroy();
}
}
exports.BehaviorController = BehaviorController;
//# sourceMappingURL=behavior.js.map