User:Anomie/rollback-prompt.js

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This code will be executed when previewing this page.

Documentation for this user script can be added at User:Anomie/rollback-prompt.

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/* This script modifies all "rollback" links to prompt for an edit summary (and prevent accidental rollbacks).
 */
 
$(document).ready(function(){
    var rollbackPrompt=function(ev){
        var summary = prompt("Enter rollback summary:", "<use default>");
        if(summary == null || summary == "") {
            ev=ev || window.event;
            if(ev.preventDefault) ev.preventDefault();
            if(ev.stopPropagation) ev.stopPropagation();
            ev.returnValue = false;
            ev.cancelBubble = true;
            return false;
        }
        if(summary != "<use default>")
            this.href = this.href.replace("?", "?summary=" + encodeURIComponent(summary) + "&");
        return true;
    };

    var links=document.getElementById('content').getElementsByTagName('a');
    for(var i=links.length-1; i>=0; i--){
        if(/[?&]action=rollback([&#]|$)/.test(links[i].href))
            links[i].onclick=rollbackPrompt;
    }

});