- * To create a "drag" interaction, you typically register a mousedown event
- * handler on the element where the drag begins. In that handler, you register a
- * mouseup handler on the window to determine when the mouse is released,
- * wherever that release happens. This works well, except when the user releases
- * the mouse over an off-domain iframe. In that case, the mouseup event is
- * handled by the iframe and never bubbles up to the window handler.
- *
- * To deal with this issue, we cover iframes with high z-index divs to make sure
- * they don't capture mouseup.
- *
- * Usage:
- * element.addEventListener('mousedown', function() {
- * var tarper = new utils.IFrameTarp();
- * tarper.cover();
- * var mouseUpHandler = function() {
- * ...
- * window.removeEventListener(mouseUpHandler);
- * tarper.uncover();
- * };
- * window.addEventListener('mouseup', mouseUpHandler);
- * };
- *
- * @constructor
- */
-export function IFrameTarp() {
- /** @type {Array.<!HTMLDivElement>} */
- this.tarps = [];
-};
-
-/**
- * Find all the iframes in the document and cover them with high z-index
- * transparent divs.
- */
-IFrameTarp.prototype.cover = function() {
- var iframes = document.getElementsByTagName("iframe");
- for (var i = 0; i < iframes.length; i++) {
- var iframe = iframes[i];
- var pos = Dygraph.findPos(iframe),
- x = pos.x,
- y = pos.y,
- width = iframe.offsetWidth,
- height = iframe.offsetHeight;
-
- var div = document.createElement("div");
- div.style.position = "absolute";
- div.style.left = x + 'px';
- div.style.top = y + 'px';
- div.style.width = width + 'px';
- div.style.height = height + 'px';
- div.style.zIndex = 999;
- document.body.appendChild(div);
- this.tarps.push(div);
- }
-};
-
-/**
- * Remove all the iframe covers. You should call this in a mouseup handler.
- */
-IFrameTarp.prototype.uncover = function() {
- for (var i = 0; i < this.tarps.length; i++) {
- this.tarps[i].parentNode.removeChild(this.tarps[i]);
- }
- this.tarps = [];
-};
-
-/**