JointJS-鼠标单击事件触发单元格位置更改事件 [英] JointJS - Mouse click event triggers cell position change event

问题描述

我需要为每个单元格定义鼠标单击事件.我使用了cell:pointerup事件；但是当我也更改单元格位置时会触发此事件.如何区分这两个事件?

I need to define mouse click event for my each cell. I used cell:pointerup event; but this event is triggered when I change positions of cells too. How can I differentiate these 2 events?

谢谢.

推荐答案

您可以做的是创建一个自定义元素视图，并通过检查是否触发了pointermove事件来从拖动中获得不同的点击在pointerdown和pointerup事件之间.

What you can do is to create a custom element view and distinct click from dragging by checking whether a pointermove event was triggered between pointerdown and pointerup events.

var ClickableView = joint.dia.ElementView.extend({
  pointerdown: function () {
    this._click = true;
    joint.dia.ElementView.prototype.pointerdown.apply(this, arguments);
  },
  pointermove: function () {
    this._click = false;
    joint.dia.ElementView.prototype.pointermove.apply(this, arguments);
  },
  pointerup: function (evt, x, y) {
    if (this._click) {
      // triggers an event on the paper and the element itself
      this.notify('cell:click', evt, x, y); 
    } else {
      joint.dia.ElementView.prototype.pointerup.apply(this, arguments);
    }
  }
});

然后告诉joint.dia.Paper使用该视图.

var paper = new joint.dia.Paper({
  // el, width, height etc.
  elementView: ClickableView
});

可以在此处找到小提琴.

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