SGH / COMPONENTS

  (function ($) {
    $(document).ready(function() {
  
      // Function to update labels of text fields
      Materialize.updateTextFields = function() {
        var input_selector = 'input[type=text], input[type=password], input[type=email], input[type=url], input[type=tel], input[type=number], input[type=search], textarea';
        $(input_selector).each(function(index, element) {

          if ($(element).val().length > 0 || $(this).attr('placeholder') !== undefined || $(element)[0].validity.badInput === true) {
            $(this).siblings('label').addClass('active');

          }
          else {
            $(this).siblings('label, i').removeClass('active');
          }
        });
      };
  
      // Text based inputs
      var input_selector = 'input[type=text], input[type=password], input[type=email], input[type=url], input[type=tel], input[type=number], input[type=search], textarea';
  

      // Handle HTML5 autofocus
      $('input[autofocus]').siblings('label, i').addClass('active');
  

      // Add active if form auto complete
      $(document).on('change', input_selector, function () {
        if($(this).val().length !== 0 || $(this).attr('placeholder') !== undefined) {
          $(this).siblings('label').addClass('active');
        }
        validate_field($(this));
      });
  
      // Add active if input element has been pre-populated on document ready
      $(document).ready(function() {
        Materialize.updateTextFields();
      });
  
      // HTML DOM FORM RESET handling
      $(document).on('reset', function(e) {
        var formReset = $(e.target);
        if (formReset.is('form')) {
          formReset.find(input_selector).removeClass('valid').removeClass('invalid');
          formReset.find(input_selector).each(function () {
            if ($(this).attr('value') === '') {
              $(this).siblings('label, i').removeClass('active');
            }
          });
  
          // Reset select
          formReset.find('select.initialized').each(function () {
            var reset_text = formReset.find('option[selected]').text();
            formReset.siblings('input.select-dropdown').val(reset_text);
          });
        }
      });
  
      // Add active when element has focus
      $(document).on('focus', input_selector, function () {
        $(this).siblings('label, i').addClass('active');
      });
  
      $(document).on('blur', input_selector, function () {
        var $inputElement = $(this);
        if ($inputElement.val().length === 0 && $inputElement[0].validity.badInput !== true && $inputElement.attr('placeholder') === undefined) {
          $inputElement.siblings('label, i').removeClass('active');
        }
  
        if ($inputElement.val().length === 0 && $inputElement[0].validity.badInput !== true && $inputElement.attr('placeholder') !== undefined) {
          $inputElement.siblings('i').removeClass('active');
        }
        validate_field($inputElement);
      });
  
      window.validate_field = function(object) {
        var hasLength = object.attr('length') !== undefined;
        var lenAttr = parseInt(object.attr('length'));
        var len = object.val().length;
  
        if (object.val().length === 0 && object[0].validity.badInput === false) {
          if (object.hasClass('validate')) {
            object.removeClass('valid');
            object.removeClass('invalid');
          }
        }
        else {
          if (object.hasClass('validate')) {
            // Check for character counter attributes
            if ((object.is(':valid') && hasLength && (len <= lenAttr)) || (object.is(':valid') && !hasLength)) {
              object.removeClass('invalid');
              object.addClass('valid');
            }
            else {
              object.removeClass('valid');
              object.addClass('invalid');
            }
          }
        }
      };
  
  
      // Textarea Auto Resize
      var hiddenDiv = $('.hiddendiv').first();
      if (!hiddenDiv.length) {
        hiddenDiv = $('<div class="hiddendiv common"></div>');
        $('body').append(hiddenDiv);
      }
      var text_area_selector = '.materialize-textarea';
  
      function textareaAutoResize($textarea) {
        // Set font properties of hiddenDiv
  
        var fontFamily = $textarea.css('font-family');
        var fontSize = $textarea.css('font-size');
  
        if (fontSize) { hiddenDiv.css('font-size', fontSize); }
        if (fontFamily) { hiddenDiv.css('font-family', fontFamily); }
  
        if ($textarea.attr('wrap') === "off") {
          hiddenDiv.css('overflow-wrap', "normal")
                   .css('white-space', "pre");
        }
  

        hiddenDiv.text($textarea.val() + '\n');
        var content = hiddenDiv.html().replace(/\n/g, '<br>');
        hiddenDiv.html(content);
  
  
        // When textarea is hidden, width goes crazy.
        // Approximate with half of window size
  
        if ($textarea.is(':visible')) {
          hiddenDiv.css('width', $textarea.width());
        }
        else {
          hiddenDiv.css('width', $(window).width()/2);
        }
  
        $textarea.css('height', hiddenDiv.height());
      }
  
      $(text_area_selector).each(function () {
        var $textarea = $(this);
        if ($textarea.val().length) {
          textareaAutoResize($textarea);
        }
      });
  
      $('body').on('keyup keydown autoresize', text_area_selector, function () {
        textareaAutoResize($(this));
      });
  

      // File Input Path

      $(document).on('change', '.file-field input[type="file"]', function () {
        var file_field = $(this).closest('.file-field');
        var path_input = file_field.find('input.file-path');
        var files      = $(this)[0].files;
        var file_names = [];
        for (var i = 0; i < files.length; i++) {
          file_names.push(files[i].name);
        }
        path_input.val(file_names.join(", "));
        path_input.trigger('change');
      });
  

      /****************
      *  Range Input  *
      ****************/
  
      var range_type = 'input[type=range]';
      var range_mousedown = false;
      var left;
  
      $(range_type).each(function () {
        var thumb = $('<span class="thumb"><span class="value"></span></span>');
        $(this).after(thumb);
      });
  
      var range_wrapper = '.range-field';
      $(document).on('change', range_type, function(e) {
        var thumb = $(this).siblings('.thumb');
        thumb.find('.value').html($(this).val());
      });
  
      $(document).on('input mousedown touchstart', range_type, function(e) {
        var thumb = $(this).siblings('.thumb');

  
        // If thumb indicator does not exist yet, create it
        if (thumb.length <= 0) {
          thumb = $('<span class="thumb"><span class="value"></span></span>');

          $(this).append(thumb);

        }
  
        // Set indicator value
        thumb.find('.value').html($(this).val());
  
        range_mousedown = true;
        $(this).addClass('active');
  
        if (!thumb.hasClass('active')) {
          thumb.velocity({ height: "30px", width: "30px", top: "-20px", marginLeft: "-15px"}, { duration: 300, easing: 'easeOutExpo' });
        }
  

        if(e.pageX === undefined || e.pageX === null){//mobile
           left = e.originalEvent.touches[0].pageX - $(this).offset().left;
        }
        else{ // desktop
           left = e.pageX - $(this).offset().left;

        }

        var width = $(this).outerWidth();

        if (left < 0) {
          left = 0;
        }
        else if (left > width) {
          left = width;
        }
        thumb.addClass('active').css('left', left);

        thumb.find('.value').html($(this).val());

      });
  
      $(document).on('mouseup touchend', range_wrapper, function() {
        range_mousedown = false;
        $(this).removeClass('active');
      });
  
      $(document).on('mousemove touchmove', range_wrapper, function(e) {
        var thumb = $(this).children('.thumb');
        var left;
        if (range_mousedown) {
          if (!thumb.hasClass('active')) {
            thumb.velocity({ height: '30px', width: '30px', top: '-20px', marginLeft: '-15px'}, { duration: 300, easing: 'easeOutExpo' });
          }
          if (e.pageX === undefined || e.pageX === null) { //mobile
            left = e.originalEvent.touches[0].pageX - $(this).offset().left;
          }
          else{ // desktop
            left = e.pageX - $(this).offset().left;
          }
          var width = $(this).outerWidth();
  
          if (left < 0) {
            left = 0;
          }
          else if (left > width) {
            left = width;
          }
          thumb.addClass('active').css('left', left);
          thumb.find('.value').html(thumb.siblings(range_type).val());
        }
      });
  
      $(document).on('mouseout touchleave', range_wrapper, function() {
        if (!range_mousedown) {
  
          var thumb = $(this).children('.thumb');
  
          if (thumb.hasClass('active')) {
            thumb.velocity({ height: '0', width: '0', top: '10px', marginLeft: '-6px'}, { duration: 100 });
          }
          thumb.removeClass('active');
        }
      });

    }); // End of $(document).ready
  

  
  
  
    // Select Plugin

    $.fn.material_select = function (callback) {
      $(this).each(function(){

        $select = $(this);

        if ( $select.hasClass('browser-default')) {

          return; // Continue to next (return false breaks out of entire loop)
        }
  

        // Tear down structure if Select needs to be rebuilt
        var lastID = $select.data('select-id');

        if (lastID) {
          $select.parent().find('span.caret').remove();
          $select.parent().find('input').remove();
  
          $select.unwrap();
          $('ul#select-options-'+lastID).remove();
        }
  
        // If destroying the select, remove the selelct-id and reset it to it's uninitialized state.
        if(callback === 'destroy') {

            $select.data('select-id', null).removeClass('initialized');
            return;

        }
  
        var uniqueID = Materialize.guid();
        $select.data('select-id', uniqueID);
        var wrapper = $('<div class="select-wrapper"></div>');
        wrapper.addClass($select.attr('class'));

        var options = $('<ul id="select-options-' + uniqueID+'" class="dropdown-content select-dropdown"></ul>');
        var selectOptions = $select.children('option');

        var label;
        if ($select.find('option:selected') !== undefined) {
          label = $select.find('option:selected');
        }
        else {
          label = options.first();
        }

        // Create Dropdown structure
        selectOptions.each(function () {
          // Add disabled attr if disabled
          options.append($('<li class="' + (($(this).is(':disabled')) ? 'disabled' : '') + '"><span>' + $(this).html() + '</span></li>'));
        });

        options.find('li').each(function (i) {
          var $curr_select = $select;
          $(this).click(function () {

            // Check if option element is disabled

            if (!$(this).hasClass('disabled')) {
              $curr_select.find('option').eq(i).prop('selected', true);

              // Trigger onchange() event

              $curr_select.trigger('change');
              $curr_select.siblings('input.select-dropdown').val($(this).text());

              if (typeof callback !== 'undefined') callback();
            }

          });

        });
  
        // Wrap Elements
        $select.wrap(wrapper);
        // Add Select Display Element
        var dropdownIcon = $('<span class="caret">&#9660;</span>');

        if ( $select.is(':disabled') )

          dropdownIcon.addClass('disabled');
  
        // escape double quotes

        var sanitizedLabelHtml = label.html().replace(/"/g, '"');

  
        var $newSelect = $('<input type="text" class="select-dropdown" readonly="true" ' + (($select.is(':disabled')) ? 'disabled' : '') + ' data-activates="select-options-' + uniqueID +'" value="'+ sanitizedLabelHtml +'"/>');
        $select.before($newSelect);
        $newSelect.before(dropdownIcon);
  

        $('body').append(options);

        // Check if section element is disabled
        if (!$select.is(':disabled')) {

          $newSelect.dropdown({"hover": false});

        }
  
        // Copy tabindex
        if ($select.attr('tabindex')) {
          $($newSelect[0]).attr('tabindex', $select.attr('tabindex'));
        }
  
        $select.addClass('initialized');
  

        $newSelect.on('focus', function(){
          $(this).trigger('open');
          label = $(this).val();
          selectedOption = options.find('li').filter(function() {
            return $(this).text().toLowerCase() === label.toLowerCase();
          })[0];
          activateOption(options, selectedOption);

        });
  

        $newSelect.on('blur', function(){
          $(this).trigger('close');

        });
  

        // Make option as selected and scroll to selected position
        activateOption = function(collection, newOption) {

          collection.find('li.active').removeClass('active');
          $(newOption).addClass('active');
          collection.scrollTo(newOption);

        };
  
        // Allow user to search by typing
        // this array is cleared after 1 second

        filterQuery = [];

        onKeyDown = function(event){
          // TAB - switch to another input
          if(event.which == 9){
            $newSelect.trigger('close');
            return;
          }

          // ARROW DOWN WHEN SELECT IS CLOSED - open select options
          if(event.which == 40 && !options.is(":visible")){
            $newSelect.trigger('open');
            return;
          }

          // ENTER WHEN SELECT IS CLOSED - submit form
          if(event.which == 13 && !options.is(":visible")){
            return;
          }

          event.preventDefault();

          // CASE WHEN USER TYPE LETTERS
          letter = String.fromCharCode(event.which).toLowerCase();
          var nonLetters = [9,13,27,38,40];
          if (letter && (nonLetters.indexOf(event.which) === -1)){
            filterQuery.push(letter);

            string = filterQuery.join("");

            newOption = options.find('li').filter(function() {
              return $(this).text().toLowerCase().indexOf(string) === 0;
            })[0];

            if(newOption){
              activateOption(options, newOption);
            }
          }

          // ENTER - select option and close when select options are opened
          if(event.which == 13){
            activeOption = options.find('li.active:not(.disabled)')[0];
            if(activeOption){
              $(activeOption).trigger('click');
              $newSelect.trigger('close');
            }
          }

          // ARROW DOWN - move to next not disabled option
          if(event.which == 40){
            newOption = options.find('li.active').next('li:not(.disabled)')[0];
            if(newOption){
              activateOption(options, newOption);
            }
          }

          // ESC - close options
          if(event.which == 27){
            $newSelect.trigger('close');
          }
  
          // ARROW UP - move to previous not disabled option
          if(event.which == 38){
            newOption = options.find('li.active').prev('li:not(.disabled)')[0];
            if(newOption){
              activateOption(options, newOption);
            }
          }
  
          // Automaticaly clean filter query so user can search again by starting letters
          setTimeout(function(){ filterQuery = []; }, 1000);
        };
  
        $newSelect.on('keydown', onKeyDown);
      });

    };
  
  }( jQuery ));