/* $Id$ */

if (!Drupal.ConditionalFields) {
  Drupal.ConditionalFields = {};
}


Drupal.ConditionalFields.switchField = function(id, values, onPageReady) {
  /* For each controlling field: find the controlled fields */
  $.each(Drupal.settings.ConditionalFields.controlling_fields, function(controllingField, controlledFields) {
    if (controllingField == id) {
      /* Find the settings of the controlled field */
      $.each(controlledFields, function(i, fieldSettings) {
        /* Multiple fields are enclosed in a wrapper */
        if ($(fieldSettings.field_id).parents("#" + fieldSettings.field_id.substring(13) + "-add-more-wrapper").length == 1) {
          var toSwitch = $("#" + fieldSettings.field_id.substring(13) + "-add-more-wrapper");
        } else {
          var toSwitch = $(fieldSettings.field_id);
        }
				Drupal.ConditionalFields.hideField(toSwitch);
				//alert(fieldSettings.field_id+' -> '+Drupal.ConditionalFields.counter[fieldSettings.field_id]);
        if (Drupal.ConditionalFields.counter[fieldSettings.field_id] > 0){
						Drupal.ConditionalFields.showField(toSwitch);
				}
        /* To do: Feature: Multiple controlling fields on the same field, are
           not supported for now. Test: other controlling fields types and widgets. */
      });
    }
  });
}


Drupal.ConditionalFields.countMultipleField = function(id, values, onPageReady) {
	Drupal.ConditionalFields.counter = [];
  /* For each controlling field: find the controlled fields */
  $.each(Drupal.settings.ConditionalFields.controlling_fields, function(controllingField, controlledFields) {
			var field = $(controllingField);
			var values  = Drupal.ConditionalFields.findValues(field);
			
      /* Find the settings of the controlled field */
      $.each(controlledFields, function(i, fieldSettings) {
        
        /* Find the trigger values of the controlled field (for this controlling field) */
        $.each(fieldSettings.trigger_values, function(ii, val) {	
				 if (jQuery.inArray(val, values) != -1) {		 	
							Drupal.ConditionalFields.counter[fieldSettings.field_id] = 1;
          } 
        });
        /* To do: Feature: Multiple controlling fields on the same field, are
           not supported for now. Test: other controlling fields types and widgets. */
      });
  });
}

Drupal.ConditionalFields.showField = function(toSwitch, onPageReady){
	if (Drupal.settings.ConditionalFields.ui_settings == "disable") {
		toSwitch.find("textarea, input, select").attr("disabled", "");
	}
	else if (onPageReady == true) {
		toSwitch.show();
	}
	else {
		switch (Drupal.settings.ConditionalFields.ui_settings.animation) {
			case 0:
				toSwitch.show();
			case 1:
				toSwitch.slideDown(Drupal.settings.ConditionalFields.ui_settings.anim_speed);
			case 2:
				toSwitch.fadeIn(Drupal.settings.ConditionalFields.ui_settings.anim_speed);
		}
	}
}

Drupal.ConditionalFields.hideField = function(toSwitch, onPageReady){
	if (Drupal.settings.ConditionalFields.ui_settings == "disable") {
		toSwitch.find("textarea, input, select").attr("disabled", "disabled");
	}
	/* Avoid flickering */
	else if (onPageReady == true) {
		toSwitch.hide();          
	}
	else {
		switch (Drupal.settings.ConditionalFields.ui_settings.animation) {
			case 0:
				toSwitch.hide();
			case 1:
				toSwitch.slideUp(Drupal.settings.ConditionalFields.ui_settings.anim_speed);
			case 2:
				toSwitch.fadeOut(Drupal.settings.ConditionalFields.ui_settings.anim_speed);
		}
	}
}



Drupal.ConditionalFields.findValues = function(field) {
  var values = [];
  field.find("option:selected, input:checked").each( function() {
    if ($(this)[0].selected || $(this)[0].checked) {
      values[values.length] = this.value;
    }
  });
  return values;
}       

Drupal.ConditionalFields.fieldChange = function() {
  var values = Drupal.ConditionalFields.findValues($(this));
  var id = '#' + $(this).attr('id');
	Drupal.ConditionalFields.countMultipleField(id, values, false);
  Drupal.ConditionalFields.switchField(id, values, false);
}



Drupal.behaviors.ConditionalFields = function (context) {
  $('.controlling-field:not(.ConditionalFields-processed)', context).addClass('ConditionalFields-processed').each(function () {
    /* Set default state */
		Drupal.ConditionalFields.countMultipleField('#' + $(this).attr('id'), Drupal.ConditionalFields.findValues($(this)));
    Drupal.ConditionalFields.switchField('#' + $(this).attr('id'), Drupal.ConditionalFields.findValues($(this)));
    /* Add events. Apparently, Explorer doesn't catch the change event? */
    $.browser.msie == true ? $(this).click(Drupal.ConditionalFields.fieldChange) : $(this).change(Drupal.ConditionalFields.fieldChange);
  });
};