app/assets/javascripts/select-authorities.js
$(document).ready(function() {
function add_option(selector, value, text) {
var optionExists = ($(selector + ' option[value=' + value + ']').length > 0);
if(!optionExists){
$(selector).append("<option value=" + value + ">" + text + "</option>");
}
}
// Transfer a set of select options defined by 'from_selector' to another select,
// defined by 'to_selector'
function transfer_options(from_selector, to_selector){
$(from_selector).each(function()
{
add_option(to_selector, $(this).val(), $(this).text());
$(this).remove();
})
$('#public_body_query').val('');
return false;
}
// Submit the search form once the text reaches a certain length
$("#public_body_query").keypress($.debounce( 300, function() {
if ($('#public_body_query').val().length >= 3) {
$('#body_search_form').submit();
}
}));
// Populate the candidate list with json search results
$('#body_search_form').on('ajax:success', function(event, data, status, xhr) {
$('#select_body_candidates').empty();
$.each(data, function(key, value)
{
add_option('#select_body_candidates', value['id'], value['name']);
});
});
// Add a hidden element to the submit form for every option in the selected list
$('#body_submit_button').click(function(){
$('#select_body_selections option').each(function()
{
$('#body_submit_form').append('<input type="hidden" value="' + $(this).val() + '" name="public_body_ids[]">' );
})
})
// Transfer selected candidates to selected list
$('#body_select_button').click(function(){
return transfer_options('#select_body_candidates option:selected', '#select_body_selections');
})
// Transfer selected selected options back to candidate list
$('#body_deselect_button').click(function(){
return transfer_options('#select_body_selections option:selected', '#select_body_candidates');
})
// Transfer all candidates to selected list
$('#body_select_all_button').click(function(){
return transfer_options('#select_body_candidates option', '#select_body_selections');
})
// Transfer all selected back to candidate list
$('#body_deselect_all_button').click(function(){
return transfer_options('#select_body_selections option', '#select_body_candidates');
})
// Show the buttons for selecting and deselecting all
$('.select_all_button').show();
})