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/**
 * @module node
 * @submodule node-screen
 */
/**
 * Returns a region object for the node
 * @config region
 * @for Node
 * @type Node
 */
Y.Node.ATTRS.region = {
 getter: function() {
 var node = this.getDOMNode(),
 region;
 if (node && !node.tagName) {
 if (node.nodeType === 9) { // document
 node = node.documentElement;
 }
 }
 if (Y.DOM.isWindow(node)) {
 region = Y.DOM.viewportRegion(node);
 } else {
 region = Y.DOM.region(node);
 }
 return region;
 }
};
/**
 * Returns a region object for the node's viewport
 * @config viewportRegion
 * @type Node
 */
Y.Node.ATTRS.viewportRegion = {
 getter: function() {
 return Y.DOM.viewportRegion(Y.Node.getDOMNode(this));
 }
};
Y.Node.importMethod(Y.DOM, 'inViewportRegion');
// these need special treatment to extract 2nd node arg
/**
 * Compares the intersection of the node with another node or region
 * @method intersect
 * @for Node
 * @param {Node|Object} node2 The node or region to compare with.
 * @param {Object} altRegion An alternate region to use (rather than this node's).
 * @return {Object} An object representing the intersection of the regions.
 */
Y.Node.prototype.intersect = function(node2, altRegion) {
 var node1 = Y.Node.getDOMNode(this);
 if (Y.instanceOf(node2, Y.Node)) { // might be a region object
 node2 = Y.Node.getDOMNode(node2);
 }
 return Y.DOM.intersect(node1, node2, altRegion);
};
/**
 * Determines whether or not the node is within the given region.
 * @method inRegion
 * @param {Node|Object} node2 The node or region to compare with.
 * @param {Boolean} all Whether or not all of the node must be in the region.
 * @param {Object} altRegion An alternate region to use (rather than this node's).
 * @return {Boolean} True if in region, false if not.
 */
Y.Node.prototype.inRegion = function(node2, all, altRegion) {
 var node1 = Y.Node.getDOMNode(this);
 if (Y.instanceOf(node2, Y.Node)) { // might be a region object
 node2 = Y.Node.getDOMNode(node2);
 }
 return Y.DOM.inRegion(node1, node2, all, altRegion);
};