// https://github.com/Infocatcher/Custom_Buttons/tree/master/Quick_Filter_by_Sender

// Quick Filter by Sender button for Custom Buttons
// (code for "code" section)

// (c) Infocatcher 2013
// version 0.1.0 - 2013-08-16

var selectedMessages = gFolderDisplay.selectedMessages;
if(selectedMessages && selectedMessages.length) {
    var authorEmail = extractAddress(selectedMessages[0].author);
    //var authorEmail = "knu@prof.ru";
    setFilterOptions({
        sender:     true,
        recipients: false,
        subject:    false,
        body:       false
    });
    var filterField = document.getElementById("qfb-qs-textbox");
    filterField.value = authorEmail;
    filterField.doCommand();
}
function extractAddress(header) {
    return Components.classes["@mozilla.org/messenger/headerparser;1"]
        .getService(Components.interfaces.nsIMsgHeaderParser)
        .extractHeaderAddressMailboxes(header);
}
function setFilterOptions(opts) {
    for(var type in opts) if(opts.hasOwnProperty(type)) {
        var btn = document.getElementById("qfb-qs-" + type);
        if(btn.checked != opts[type])
            btn.click();
    }
}

goDoCommand("cmd_toggleQuickFilterBar");
    document.getElementById("qfb-attachment").click(); 
    var filterField = document.getElementById("qfb-qs-textbox");       
    filterField.value = authorEmail; 
    filterField.doCommand();

menuitem.onclick =e=> play(gContextMenu.getLinkURL(), e.button ? "/add" : "");

menuitem.onclick =e=> play(gContextMenu.getLinkURL(), e.button ? "/add" : "/add");

menuitem.onclick =e=> play(gContextMenu.getLinkURL(), e.button ? "" : "/add");

var vto = {
    distanceShow: 2,
    distanceHide: 64,
    showDelay: 320,
    color: "lightblue",
    fringe: "black",
    padding: 3,
    name: "VT",

function addBackground(e) {
   setTimeout(function() {
      var toolbar = document.getElementById('cb-vt');
      var win = document.getElementById("main-window");
      
      var image = win.style.backgroundImage;
      if ( image == '' ) { 
           toolbar.style.background = '';
           return;
           };
      toolbar.style.background = image;
      toolbar.style.backgroundSize = 'auto 100%';
   }, 500);
};
addBackground(); 
Services.obs.addObserver(addBackground, "lightweight-theme-styling-update", false);
addDestructor(()=> Services.obs.removeObserver(addBackground, "lightweight-theme-styling-update") );