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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var gAddButton;
var gRemoveButton;
var gHeaderInputElement;
var gArrayHdrs;
var gHdrsList;
var gContainer;
var gFilterBundle = null;
var gCustomBundle = null;
window.addEventListener("DOMContentLoaded", onLoad);
document.addEventListener("dialogaccept", onOk);
document.addEventListener("dialogextra1", onAddHeader);
document.addEventListener("dialogextra2", onRemoveHeader);
function onLoad() {
let hdrs = Services.prefs.getCharPref("mailnews.customHeaders");
gHeaderInputElement = document.getElementById("headerInput");
gHeaderInputElement.focus();
gHdrsList = document.getElementById("headerList");
gArrayHdrs = [];
gAddButton = document.getElementById("addButton");
gRemoveButton = document.getElementById("removeButton");
initializeDialog(hdrs);
updateAddButton(true);
updateRemoveButton();
}
function initializeDialog(hdrs) {
if (hdrs) {
hdrs = hdrs.replace(/\s+/g, ""); // remove white spaces before splitting
gArrayHdrs = hdrs.split(":");
for (var i = 0; i < gArrayHdrs.length; i++) {
if (!gArrayHdrs[i]) {
// Remove any null elements.
gArrayHdrs.splice(i, 1);
}
}
initializeRows();
}
}
function initializeRows() {
for (var i = 0; i < gArrayHdrs.length; i++) {
addRow(TrimString(gArrayHdrs[i]));
}
}
function onTextInput() {
// enable the add button if the user has started to type text
updateAddButton(gHeaderInputElement.value == "");
}
function onOk() {
if (gArrayHdrs.length) {
var hdrs;
if (gArrayHdrs.length == 1) {
hdrs = gArrayHdrs;
} else {
hdrs = gArrayHdrs.join(": ");
}
Services.prefs.setCharPref("mailnews.customHeaders", hdrs);
// flush prefs to disk, in case we crash, to avoid dataloss and problems with filters that use the custom headers
Services.prefs.savePrefFile(null);
} else {
Services.prefs.clearUserPref("mailnews.customHeaders"); // clear the pref, no custom headers
}
window.arguments[0].selectedVal = gHdrsList.selectedItem
? gHdrsList.selectedItem.label
: null;
}
function customHeaderOverflow() {
var nsMsgSearchAttrib = Ci.nsMsgSearchAttrib;
if (
gArrayHdrs.length >=
nsMsgSearchAttrib.kNumMsgSearchAttributes -
nsMsgSearchAttrib.OtherHeader -
1
) {
if (!gFilterBundle) {
gFilterBundle = document.getElementById("bundle_filter");
}
var alertText = gFilterBundle.getString("customHeaderOverflow");
Services.prompt.alert(window, null, alertText);
return true;
}
return false;
}
function onAddHeader() {
var newHdr = TrimString(gHeaderInputElement.value);
if (!isRFC2822Header(newHdr)) {
// if user entered an invalid rfc822 header field name, bail out.
if (!gCustomBundle) {
gCustomBundle = document.getElementById("bundle_custom");
}
var alertText = gCustomBundle.getString("colonInHeaderName");
Services.prompt.alert(window, null, alertText);
return;
}
gHeaderInputElement.value = "";
if (!newHdr || customHeaderOverflow()) {
return;
}
if (!duplicateHdrExists(newHdr)) {
gArrayHdrs[gArrayHdrs.length] = newHdr;
var newItem = addRow(newHdr);
gHdrsList.selectItem(newItem); // make sure the new entry is selected in the tree
// now disable the add button
updateAddButton(true);
gHeaderInputElement.focus(); // refocus the input field for the next custom header
}
}
function isRFC2822Header(hdr) {
var charCode;
for (var i = 0; i < hdr.length; i++) {
charCode = hdr.charCodeAt(i);
// 58 is for colon and 33 and 126 are us-ascii bounds that should be used for header field name, as per rfc2822
if (charCode < 33 || charCode == 58 || charCode > 126) {
return false;
}
}
return true;
}
function duplicateHdrExists(hdr) {
for (var i = 0; i < gArrayHdrs.length; i++) {
if (gArrayHdrs[i] == hdr) {
return true;
}
}
return false;
}
function onRemoveHeader() {
var listitem = gHdrsList.selectedItems[0];
if (!listitem) {
return;
}
listitem.remove();
var selectedHdr = listitem.firstElementChild.getAttribute("value").trim();
for (let i = 0; i < gArrayHdrs.length; i++) {
if (gArrayHdrs[i] == selectedHdr) {
gArrayHdrs.splice(i, 1);
break;
}
}
}
function addRow(newHdr) {
return gHdrsList.appendItem(newHdr, "");
}
function updateAddButton(aDisable) {
// only update the button if the disabled state changed
if (aDisable == gAddButton.disabled) {
return;
}
gAddButton.disabled = aDisable;
document.querySelector("dialog").defaultButton = aDisable
? "accept"
: "extra1";
}
function updateRemoveButton() {
var headerSelected = gHdrsList.selectedItems.length > 0;
gRemoveButton.disabled = !headerSelected;
if (gRemoveButton.disabled) {
gHeaderInputElement.focus();
}
}
// Remove whitespace from both ends of a string
function TrimString(string) {
if (!string) {
return "";
}
return string.trim();
}
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