mirror of
https://github.com/gorhill/uBlock.git
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69 lines
2.7 KiB
JavaScript
69 lines
2.7 KiB
JavaScript
/*******************************************************************************
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µBlock - a Chromium browser extension to block requests.
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Copyright (C) 2015 The µBlock authors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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(function() {
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'use strict';
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var whenSizeChanges = function(elm, callback) {
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var reset = function() {
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k.style.width = grow.offsetWidth + 10 + "px";
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k.style.height = grow.offsetHeight + 10 + "px";
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grow.scrollLeft = grow.scrollWidth;
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grow.scrollTop = grow.scrollHeight;
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shrink.scrollLeft = shrink.scrollWidth;
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shrink.scrollTop = shrink.scrollHeight;
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w = elm.offsetWidth;
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h = elm.offsetHeight;
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}
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var aux = document.createElement("div");
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aux.style.cssText = "position:absolute;left:0;top:0;right:0;bottom:0;overflow:scroll;z-index:-1;visibility:hidden";
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aux.innerHTML = '<div style="position:absolute;left:0;top:0;right:0;bottom:0;overflow:scroll;z-index:-1;visibility:hidden">\
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<div style="position:absolute;left:0;top:0;"></div>\
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</div>\
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<div style="position:absolute;left:0;top:0;right:0;bottom:0;overflow:scroll;z-index:-1;visibility:hidden">\
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<div style="position:absolute;left:0;top:0;width:200%;height:200%"></div>\
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</div>';
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elm.appendChild(aux);
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var grow = aux.childNodes[0],
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k = grow.childNodes[0],
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shrink = aux.childNodes[1];
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var w, h;
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reset();
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grow.addEventListener("scroll", function() {
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(elm.offsetWidth > w || elm.offsetHeight > h) && callback();
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reset();
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});
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shrink.addEventListener("scroll", function() {
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(elm.offsetWidth < w || elm.offsetHeight < h) && callback();
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reset();
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});
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};
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var onLoaded = function() {
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var body = document.body, popover = safari.self;
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var updateSize = function() {
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popover.width = body.clientWidth;
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popover.height = body.clientHeight;
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};
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body.style.position = "relative"; // Necessary for size change detection
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whenSizeChanges(body, updateSize);
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};
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window.addEventListener('load', onLoaded);
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})();
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