From 433b03ec0c4bbf0dd024e1c96fad62ac36e4ab4f Mon Sep 17 00:00:00 2001
From: Louise Crow <louise.crow@gmail.com>
Date: Thu, 31 Oct 2013 18:05:46 +0000
Subject: Javascript enhancements.

Add or remove all buttons, ajax search as you type.
---
 app/assets/javascripts/select-authorities.js | 67 ++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 app/assets/javascripts/select-authorities.js

(limited to 'app/assets/javascripts/select-authorities.js')

diff --git a/app/assets/javascripts/select-authorities.js b/app/assets/javascripts/select-authorities.js
new file mode 100644
index 000000000..843f5c0ad
--- /dev/null
+++ b/app/assets/javascripts/select-authorities.js
@@ -0,0 +1,67 @@
+$(document).ready(function() {
+
+  function add_option(selector, value, text) {
+    var optionExists = ($(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();
+})
-- 
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