зеркало из https://github.com/mozilla/pjs.git
80 строки
2.7 KiB
JavaScript
80 строки
2.7 KiB
JavaScript
/**
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* Tests if the given accessible at the given point is expected.
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*
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* @param aIdentifier [in] accessible identifier
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* @param aX [in] x coordinate of the point relative accessible
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* @param aY [in] y coordinate of the point relative accessible
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* @param aFindDeepestChild [in] points whether deepest or nearest child should
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* be returned
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* @param aChildIdentifier [in] expected child accessible
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*/
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function testChildAtPoint(aIdentifier, aX, aY, aFindDeepestChild,
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aChildIdentifier)
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{
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var childAcc = getAccessible(aChildIdentifier);
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var actualChildAcc = getChildAtPoint(aIdentifier, aX, aY, aFindDeepestChild);
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var msg = "Wrong " + (aFindDeepestChild ? "deepest" : "direct");
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msg += " child accessible [" + prettyName(actualChildAcc);
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msg += "] at the point (" + aX + ", " + aY + ") of accessible [";
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msg += prettyName(aIdentifier) + "]";
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is(childAcc, actualChildAcc, msg);
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}
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/**
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* Return child accessible at the given point.
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*
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* @param aIdentifier [in] accessible identifier
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* @param aX [in] x coordinate of the point relative accessible
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* @param aY [in] y coordinate of the point relative accessible
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* @param aFindDeepestChild [in] points whether deepest or nearest child should
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* be returned
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* @return the child accessible at the given point
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*/
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function getChildAtPoint(aIdentifier, aX, aY, aFindDeepestChild)
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{
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var nodeObj = { value: null };
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var acc = getAccessible(aIdentifier, null, nodeObj);
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var node = nodeObj.value;
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if (!acc || !node)
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return;
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var [deltaX, deltaY] = getScreenCoords(node);
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var x = deltaX + aX;
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var y = deltaY + aY;
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try {
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if (aFindDeepestChild)
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return acc.getDeepestChildAtPoint(x, y);
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return acc.getChildAtPoint(x, y);
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} catch (e) { }
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return null;
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}
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/**
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* Return DOM node coordinates relative screen as pair (x, y).
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*/
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function getScreenCoords(aNode)
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{
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if (aNode instanceof nsIDOMXULElement)
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return [node.boxObject.screenX, node.boxObject.screenY];
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// Ugly hack until bug 486200 is fixed.
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const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
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var descr = document.createElementNS(XUL_NS, "description");
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descr.setAttribute("value", "helper description");
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aNode.parentNode.appendChild(descr);
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var descrBoxObject = descr.boxObject;
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var descrRect = descr.getBoundingClientRect();
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var deltaX = descrBoxObject.screenX - descrRect.left;
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var deltaY = descrBoxObject.screenY - descrRect.top;
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aNode.parentNode.removeChild(descr);
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var rect = aNode.getBoundingClientRect();
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return [rect.left + deltaX, rect.top + deltaY];
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}
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