seleniums "clickAt()"方法背后的 JavaScript 代码？

Question

我想做的正是 seleniums“clickAt()”方法正在做的事情。它不同于 seleniums 和普通的 javascript 命令“click()”。

因为“clickAt”正在用于 ajax 测试，而正常的“click”方法不是。

假设我想在 ID 为 myid 的元素上执行 clickAt

我该怎么做？

Answer 1

我想你要找的是这个:

/* Fire a mouse event in a browser-compatible manner */

BrowserBot.prototype.triggerMouseEvent = function(element, eventType, canBubble, clientX, clientY, button) {
    clientX = clientX ? clientX : 0;
    clientY = clientY ? clientY : 0;

    LOG.debug("triggerMouseEvent assumes setting screenX and screenY to 0 is ok");
    var screenX = 0;
    var screenY = 0;

    canBubble = (typeof(canBubble) == undefined) ? true : canBubble;
    var evt;
    if (element.fireEvent && element.ownerDocument && element.ownerDocument.createEventObject) { //IE
        evt = createEventObject(element, this.controlKeyDown, this.altKeyDown, this.shiftKeyDown, this.metaKeyDown);
        evt.detail = 0;
        evt.button = button ? button : 1; // default will be the left mouse click ( http://www.javascriptkit.com/jsref/event.shtml )
        evt.relatedTarget = null;
        if (!screenX && !screenY && !clientX && !clientY && !this.controlKeyDown && !this.altKeyDown && !this.shiftKeyDown && !this.metaKeyDown) {
            element.fireEvent('on' + eventType);
        }
        else {
            evt.screenX = screenX;
            evt.screenY = screenY;
            evt.clientX = clientX;
            evt.clientY = clientY;

            // when we go this route, window.event is never set to contain the event we have just created.
            // ideally we could just slide it in as follows in the try-block below, but this normally
            // doesn't work.  This is why I try to avoid this code path, which is only required if we need to
            // set attributes on the event (e.g., clientX).
            try {
                window.event = evt;
            }
            catch(e) {
                // getting an "Object does not support this action or property" error.  Save the event away
                // for future reference.
                // TODO: is there a way to update window.event?

                // work around for http://jira.openqa.org/browse/SEL-280 -- make the event available somewhere:
                selenium.browserbot.getCurrentWindow().selenium_event = evt;
            }
            element.fireEvent('on' + eventType, evt);
        }
    }
    else {
        evt = document.createEvent('MouseEvents');
        if (evt.initMouseEvent)
        {
            // see http://developer.mozilla.org/en/docs/DOM:event.button and
            // http://developer.mozilla.org/en/docs/DOM:event.initMouseEvent for button ternary logic logic
            //Safari
            evt.initMouseEvent(eventType, canBubble, true, document.defaultView, 1, screenX, screenY, clientX, clientY,
                this.controlKeyDown, this.altKeyDown, this.shiftKeyDown, this.metaKeyDown, button ? button : 0, null);
        }
        else {
            LOG.warn("element doesn't have initMouseEvent; firing an event which should -- but doesn't -- have other mouse-event related attributes here, as well as controlKeyDown, altKeyDown, shiftKeyDown, metaKeyDown");
            evt.initEvent(eventType, canBubble, true);

            evt.shiftKey = this.shiftKeyDown;
            evt.metaKey = this.metaKeyDown;
            evt.altKey = this.altKeyDown;
            evt.ctrlKey = this.controlKeyDown;
            if(button)
            {
              evt.button = button;
            }
        }
        element.dispatchEvent(evt);
    }
};

这来自 Selenium 源代码，可在以下位置获得:

http://selenium.googlecode.com/svn/trunk/javascript/selenium-core/scripts/selenium-browserbot.js