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- goog.provide('goog.positioning.ViewportClientPosition');
- goog.require('goog.dom');
- goog.require('goog.math.Coordinate');
- goog.require('goog.positioning');
- goog.require('goog.positioning.ClientPosition');
- goog.require('goog.positioning.Overflow');
- goog.require('goog.positioning.OverflowStatus');
- goog.require('goog.style');
- goog.positioning.ViewportClientPosition = function(arg1, opt_arg2) {
- goog.positioning.ClientPosition.call(this, arg1, opt_arg2);
- };
- goog.inherits(
- goog.positioning.ViewportClientPosition, goog.positioning.ClientPosition);
- goog.positioning.ViewportClientPosition.prototype.lastResortOverflow_ = 0;
- goog.positioning.ViewportClientPosition.prototype.setLastResortOverflow =
- function(overflow) {
- this.lastResortOverflow_ = overflow;
- };
- goog.positioning.ViewportClientPosition.prototype.reposition = function(
- element, popupCorner, opt_margin, opt_preferredSize) {
- var viewportElt = goog.style.getClientViewportElement(element);
- var viewport = goog.style.getVisibleRectForElement(viewportElt);
- var scrollEl = goog.dom.getDomHelper(element).getDocumentScrollElement();
- var clientPos = new goog.math.Coordinate(
- this.coordinate.x + scrollEl.scrollLeft,
- this.coordinate.y + scrollEl.scrollTop);
- var failXY =
- goog.positioning.Overflow.FAIL_X | goog.positioning.Overflow.FAIL_Y;
- var corner = popupCorner;
-
- var status = goog.positioning.positionAtCoordinate(
- clientPos, element, corner, opt_margin, viewport, failXY,
- opt_preferredSize);
- if ((status & goog.positioning.OverflowStatus.FAILED) == 0) {
- return;
- }
-
- if (status & goog.positioning.OverflowStatus.FAILED_LEFT ||
- status & goog.positioning.OverflowStatus.FAILED_RIGHT) {
- corner = goog.positioning.flipCornerHorizontal(corner);
- }
-
- if (status & goog.positioning.OverflowStatus.FAILED_TOP ||
- status & goog.positioning.OverflowStatus.FAILED_BOTTOM) {
- corner = goog.positioning.flipCornerVertical(corner);
- }
-
- status = goog.positioning.positionAtCoordinate(
- clientPos, element, corner, opt_margin, viewport, failXY,
- opt_preferredSize);
- if ((status & goog.positioning.OverflowStatus.FAILED) == 0) {
- return;
- }
-
-
- goog.positioning.positionAtCoordinate(
- clientPos, element, popupCorner, opt_margin, viewport,
- this.lastResortOverflow_, opt_preferredSize);
- };
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