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/*
* This file is part of Adblock Plus <https://adblockplus.org/>,
* Copyright (C) 2006-2017 eyeo GmbH
*
* Adblock Plus is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* Adblock Plus is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @fileOverview Draws a blinking border for a list of matching elements.
*/
function Flasher(elements, scrollToItem)
{
if (scrollToItem && elements[0].ownerDocument)
{
// Ensure that at least one element is visible when flashing
elements[0].scrollIntoView();
}
this.elements = elements;
this.count = 0;
this.doFlash();
}
Flasher.prototype =
{
elements: null,
count: 0,
timer: null,
doFlash: function()
{
if (this.count >= 12)
{
this.stop();
return;
}
if (this.count % 2)
this.switchOff();
else
this.switchOn();
this.count++;
this.timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
this.timer.initWithCallback(() => this.doFlash(), 300, Ci.nsITimer.TYPE_ONE_SHOT);
},
stop: function()
{
if (this.timer)
{
this.timer.cancel();
this.timer = null;
}
if (this.elements)
{
this.switchOff();
this.elements = null;
}
},
setOutline: function(outline, offset)
{
for (let element of this.elements)
{
if (!Cu.isDeadWrapper(element) && "style" in element)
{
element.style.outline = outline;
element.style.outlineOffset = offset;
}
}
},
switchOn: function()
{
this.setOutline("#CC0000 dotted 2px", "-2px");
},
switchOff: function()
{
this.setOutline("", "");
}
};
exports.Flasher = Flasher;
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