/* 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/.
*
* This Source Code Form is "Incompatible With Secondary Licenses", as
* defined by the Mozilla Public License, v. 2.0.
*/
var PAREN_INDENT_EM = 2;
var ANY_ALL_SELECT_CLASS = 'any_all_select';
// When somebody chooses to "Hide Advanced Features" for Custom Search,
// we don't want to hide "Not" checkboxes if they've been checked. We
// accomplish this by removing the custom_search_advanced class from Not
// checkboxes when they are checked.
//
// We never add the custom_search_advanced class back. If we did, TUI
// would get confused in this case: Check Not, Hide Advanced Features,
// Uncheck Not, Show Advanced Features. (It hides "Not" when it shouldn't.)
function custom_search_not_changed(id) {
var container = document.getElementById('custom_search_not_container_' + id);
YAHOO.util.Dom.removeClass(container, 'custom_search_advanced');
fix_query_string(container);
}
function custom_search_new_row() {
var row = document.getElementById('custom_search_last_row');
var clone = row.cloneNode(true);
_cs_fix_row_ids(clone);
// We only want one copy of the buttons, in the new row. So the old
// ones get deleted.
var op_button = document.getElementById('op_button');
row.removeChild(op_button);
var cp_button = document.getElementById('cp_container');
row.removeChild(cp_button);
var add_button = document.getElementById('add_button');
row.removeChild(add_button);
_remove_any_all(clone);
// Always make sure there's only one row with this id.
row.id = null;
row.parentNode.appendChild(clone);
cs_reconfigure(row);
fix_query_string(row);
return clone;
}
var _cs_source_any_all;
function custom_search_open_paren() {
var row = document.getElementById('custom_search_last_row');
// create a copy of j_top and use that as the source, so we can modify
// j_top if required
if (!_cs_source_any_all) {
var j_top = document.getElementById('j_top');
_cs_source_any_all = j_top.cloneNode(true);
}
// find the parent any/all select, and remove the grouped option
var structure = _cs_build_structure(row);
var old_id = _cs_get_row_id(row);
var parent_j = document.getElementById(_cs_get_join(structure, 'f' + old_id));
_cs_remove_and_g(parent_j);
// If there's an "Any/All" select in this row, it needs to stay as
// part of the parent paren set.
var old_any_all = _remove_any_all(row);
if (old_any_all) {
var any_all_row = row.cloneNode(false);
any_all_row.id = null;
any_all_row.appendChild(old_any_all);
row.parentNode.insertBefore(any_all_row, row);
}
// We also need a "Not" checkbox to stay in the parent paren set.
var new_not = YAHOO.util.Dom.getElementsByClassName(
'custom_search_not_container', null, row);
var not_for_paren = new_not[0].cloneNode(true);
// Preserve the values when modifying the row.
var id = _cs_fix_row_ids(row, true);
var prev_id = id - 1;
var paren_row = row.cloneNode(false);
paren_row.id = null;
paren_row.innerHTML = '(';
paren_row.insertBefore(not_for_paren, paren_row.firstChild);
row.parentNode.insertBefore(paren_row, row);
// New paren set needs a new "Any/All" select.
var any_all_container = document.createElement('div');
YAHOO.util.Dom.addClass(any_all_container, ANY_ALL_SELECT_CLASS);
var any_all = _cs_source_any_all.cloneNode(true);
any_all.name = 'j' + prev_id;
any_all.id = any_all.name;
any_all_container.appendChild(any_all);
row.insertBefore(any_all_container, row.firstChild);
var margin = YAHOO.util.Dom.getStyle(row, 'margin-left');
var int_match = margin.match(/\d+/);
var new_margin = parseInt(int_match[0]) + PAREN_INDENT_EM;
YAHOO.util.Dom.setStyle(row, 'margin-left', new_margin + 'em');
YAHOO.util.Dom.removeClass('cp_container', 'bz_default_hidden');
cs_reconfigure(any_all_container);
fix_query_string(any_all_container);
}
function custom_search_close_paren() {
var new_row = custom_search_new_row();
// We need to up the new row's id by one more, because we're going
// to insert a "CP" before it.
var id = _cs_fix_row_ids(new_row);
var margin = YAHOO.util.Dom.getStyle(new_row, 'margin-left');
var int_match = margin.match(/\d+/);
var new_margin = parseInt(int_match[0]) - PAREN_INDENT_EM;
YAHOO.util.Dom.setStyle(new_row, 'margin-left', new_margin + 'em');
var paren_row = new_row.cloneNode(false);
paren_row.id = null;
paren_row.innerHTML = ')';
new_row.parentNode.insertBefore(paren_row, new_row);
if (new_margin == 0) {
YAHOO.util.Dom.addClass('cp_container', 'bz_default_hidden');
}
cs_reconfigure(new_row);
fix_query_string(new_row);
}
// When a user goes Back in their browser after searching, some browsers
// (Chrome, as of September 2011) do not remember the DOM that was created
// by the Custom Search JS. (In other words, their whole entered Custom
// Search disappears.) The solution is to update the History object,
// using the query string, which query.cgi can read to re-create the page
// exactly as the user had it before.
function fix_query_string(form_member) {
// window.History comes from history.js.
// It falls back to the normal window.history object for HTML5 browsers.
if (!(window.History && window.History.replaceState))
return;
var form = YAHOO.util.Dom.getAncestorByTagName(form_member, 'form');
// Disable the token field so setForm doesn't include it
var reenable_token = false;
if (form['token'] && !form['token'].disabled) {
form['token'].disabled = true;
reenable_token = true;
}
var query = YAHOO.util.Connect.setForm(form);
if (reenable_token)
form['token'].disabled = false;
window.History.replaceState(null, document.title, '?' + query);
}
// Browsers that do not support HTML5's history.replaceState gain an emulated
// version via history.js, with the full query_string in the location's hash.
// We rewrite the URL to include the hash and redirect to the new location,
// which causes custom search fields to work.
function redirect_html4_browsers() {
var hash = document.location.hash;
if (hash == '') return;
hash = hash.substring(1);
if (hash.substring(0, 10) != 'query.cgi?') return;
var url = document.location + "";
url = url.substring(0, url.indexOf('query.cgi#')) + hash;
document.location = url;
}
function _cs_fix_row_ids(row, preserve_values) {
// Update the label of the checkbox.
var label = YAHOO.util.Dom.getElementBy(function() { return true }, 'label', row);
var id_match = label.htmlFor.match(/\d+$/);
var id = parseInt(id_match[0]) + 1;
label.htmlFor = label.htmlFor.replace(/\d+$/, id);
// Sets all the inputs in the row back to their default
// and fixes their id.
var fields =
YAHOO.util.Dom.getElementsByClassName('custom_search_form_field', null, row);
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
if (!preserve_values) {
if (field.type == "checkbox") {
field.checked = false;
}
else {
field.value = '';
}
}
// Update the numeric id for the row.
field.name = field.name.replace(/\d+$/, id);
field.id = field.name;
}
return id;
}
function _cs_build_structure(form_member) {
// build a map of the structure of the custom fields
var form = YAHOO.util.Dom.getAncestorByTagName(form_member, 'form');
var last_id = _get_last_cs_row_id(form);
var structure = [ 'j_top' ];
var nested = [ structure ];
for (var id = 1; id <= last_id; id++) {
var f = form['f' + id];
if (!f || !f.parentNode.parentNode) continue;
if (f.value == 'OP') {
var j = [ 'j' + id ];
nested[nested.length - 1].push(j);
nested.push(j);
continue;
} else if (f.value == 'CP') {
nested.pop();
continue;
} else {
nested[nested.length - 1].push('f' + id);
}
}
return structure;
}
function cs_reconfigure(form_member) {
var structure = _cs_build_structure(form_member);
_cs_add_listeners(structure);
_cs_trigger_j_listeners(structure);
fix_query_string(form_member);
var j = _cs_get_join(structure, 'f' + _get_last_cs_row_id());
document.getElementById('op_button').disabled = document.getElementById(j).value == 'AND_G';
}
function _cs_add_listeners(parents) {
for (var i = 0, l = parents.length; i < l; i++) {
if (typeof(parents[i]) == 'object') {
// nested
_cs_add_listeners(parents[i]);
} else if (i == 0) {
// joiner
YAHOO.util.Event.removeListener(parents[i], 'change', _cs_j_change);
YAHOO.util.Event.addListener(parents[i], 'change', _cs_j_change, parents);
} else {
// field
YAHOO.util.Event.removeListener(parents[i], 'change', _cs_f_change);
YAHOO.util.Event.addListener(parents[i], 'change', _cs_f_change, parents);
}
}
}
function _cs_trigger_j_listeners(fields) {
var has_children = false;
for (var i = 0, l = fields.length; i < l; i++) {
if (typeof(fields[i]) == 'undefined') {
continue;
} else if (typeof(fields[i]) == 'object') {
// nested
_cs_trigger_j_listeners(fields[i]);
has_children = true;
} else if (i == 0) {
_cs_j_change(undefined, fields);
}
}
if (has_children) {
_cs_remove_and_g(document.getElementById(fields[0]));
}
}
function _cs_get_join(parents, field) {
for (var i = 0, l = parents.length; i < l; i++) {
if (typeof(parents[i]) == 'object') {
// nested
var result = _cs_get_join(parents[i], field);
if (result) return result;
} else if (parents[i] == field) {
return parents[0];
}
}
return false;
}
function _cs_remove_and_g(join_field) {
var index = bz_optionIndex(join_field, 'AND_G');
join_field.options[index] = null;
join_field.options[bz_optionIndex(join_field, 'AND')].innerHTML = cs_and_label;
join_field.options[bz_optionIndex(join_field, 'OR')].innerHTML = cs_or_label;
}
function _cs_j_change(evt, fields, field) {
var j = document.getElementById(fields[0]);
if (j && j.value == 'AND_G') {
for (var i = 1, l = fields.length; i < l; i++) {
if (typeof(fields[i]) == 'object') continue;
if (!field) {
field = document.getElementById(fields[i]).value;
} else {
document.getElementById(fields[i]).value = field;
}
}
if (evt) {
fix_query_string(j);
}
if ('f' + _get_last_cs_row_id() == fields[fields.length - 1]) {
document.getElementById('op_button').style.display = 'none';
}
} else {
document.getElementById('op_button').style.display = '';
}
}
function _cs_f_change(evt, args) {
var field = YAHOO.util.Event.getTarget(evt);
_cs_j_change(evt, args, field.value);
}
function _get_last_cs_row_id() {
return _cs_get_row_id('custom_search_last_row');
}
function _cs_get_row_id(row) {
var label = YAHOO.util.Dom.getElementBy(function() { return true }, 'label', row);
return parseInt(label.htmlFor.match(/\d+$/)[0]);
}
function _remove_any_all(parent) {
var any_all = YAHOO.util.Dom.getElementsByClassName(
ANY_ALL_SELECT_CLASS, null, parent);
if (any_all[0]) {
parent.removeChild(any_all[0]);
return any_all[0];
}
return null;
}