// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

(function($, cloudStack) {
  /**
   * Instance wizard
   */
  cloudStack.uiCustom.instanceWizard = function(args) {
    return function(listViewArgs) {
      var context = listViewArgs.context;

      var instanceWizard = function(data) {
        var $wizard = $('#template').find('div.instance-wizard').clone();
        var $progress = $wizard.find('div.progress ul li');
        var $steps = $wizard.find('div.steps').children().hide();
        var $diagramParts = $wizard.find('div.diagram').children().hide();
        var $form = $wizard.find('form');

        $form.validate();

        // Close instance wizard
        var close = function() {
          $wizard.dialog('destroy');
          $('div.overlay').fadeOut(function() { $('div.overlay').remove(); });
        };

        // Save instance and close wizard
        var completeAction = function() {
          var data = cloudStack.serializeForm($form);
          var $wizardLoading = $('<div>').addClass('loading-overlay').appendTo($wizard).css('z-index', '10000');

          args.action({
            // Populate data
            context: context,
            data: data,
            response: {
              success: function(args) {
                var $listView = $('.list-view.instances');

                if ($listView.size()) {
                  var $loading = $('.list-view.instances').listView('prependItem', {
                    data: [
                      {
                        name: data.displayname ? data.displayname : _l('label.new.vm'),
                        zonename: $wizard.find('select[name=zoneid] option').filter(function() {
                          return $(this).val() == data.zoneid;
                        }).html(),
                        state: 'Creating'
                      }
                    ],
                    actionFilter: function(args) { return []; }
                  });
                }

                listViewArgs.complete({
                  _custom: args._custom,
                  messageArgs: cloudStack.serializeForm($form),
                  $item: $listView.size()? $loading : $('<div>')
                }); 

                close();
              },
              error: function(message) {
                $wizard.remove();
                $('div.overlay').remove();

                if (message) {
                  cloudStack.dialog.notice({ message: message });
                }
              }
            }
          });
        };

        var makeSelects = function(name, data, fields, options, selectedObj) {
          var $selects = $('<div>');
          options = options ? options : {};

          $(data).each(function() {
            var item = this;
            var id = item[fields.id];

            var $select = $('<div>')
                  .addClass('select')
                  .append(
                    $('<input>')
                      .attr({
                        type: (function(type) {
                          return type ? type : 'radio';
                        })(options ? options.type : null),
                        name: name,
                        'wizard-field': options['wizard-field']
                      })
                      .val(id)
                      .click(function() {
                        var $select = $(this).closest('.select');
                        var isSingleSelect = $select.hasClass('single-select');
                        var $radio = $select.find('input[type=radio]');
                        var $newNetwork = $(this).closest('.content').find('.select.new-network');
                        var $otherSelects = $select.siblings().filter(':visible');
                        var isCheckbox = $(this).attr('type') == 'checkbox';

                        if (isCheckbox) {
                          if (isSingleSelect) {
                            $select.siblings('.single-select:visible').find('input[type=checkbox]')
                              .attr('checked', false);

                            if (!$('input[name=new-network]:visible').is(':checked')) {
                              $(this).closest('.select').find('input[type=radio]').click();
                            } else {
                              $newNetwork.find('input[type=radio]').click();
                            }
                          }

                          if ((!$otherSelects.size()) &&
                                     $newNetwork.find('input[type=checkbox]').is(':unchecked')) {
                            // Set as default
                            $(this).closest('.select').find('input[type=radio]').click();
                          }
                        }
                        
                        if ($radio.is(':checked') && !$(this).is(':checked')) {
                          if (!$radio.closest('.select').index()) {
                            return false;
                          } else {
                            $otherSelects.filter(':first')
                              .find('input[type=radio]').click();
                          }
                        }

                        return true;
                      })
                  )
                  .append(
                    $('<div>').addClass('select-desc')
                      .append($('<div>').addClass('name').html(_s(this[fields.name])))
                      .append($('<div>').addClass('desc').html(_s(this[fields.desc])))
                  )
                  .data('json-obj', this);
            
            if(selectedObj != null && selectedObj.id == item.id) {                
              $select.find('input[type=checkbox]').attr('checked', 'checked');           
            }                        
            
            $selects.append($select);

            if (item._singleSelect) {
              $select.addClass('single-select');
            }

            if (options.secondary) {
              var $secondary = $('<div>').addClass('secondary-input').append(
                $('<input>')
                  .attr({
                    type: options.secondary.type,
                    name: options.secondary.name,
                    'wizard-field': options.secondary['wizard-field']
                  })
                  .val(id)
                  .click(function() {
                    var $checkbox = $(this).closest('.select').find('input[type=checkbox]');

                    if (!$checkbox.is(':checked')) {
                      $checkbox.attr('checked', true);
                    }

                    if ($(this).closest('.select-container').hasClass('single-select')) {
                      $(this).closest('.select').siblings().find('input[type=checkbox]')
                        .attr('checked', false);
                    }

                    if ($select.hasClass('single-select')) {
                      $select.siblings('.single-select:visible').find('input[type=checkbox]')
                        .attr('checked', false);
                    }
                  })
                  .after(
                    $('<div>').addClass('name').html(options.secondary.desc)
                  )
              ).appendTo($select);
            }
          });

          cloudStack.evenOdd($selects, 'div.select', {
            even: function($elem) {
              $elem.addClass('even');
            },
            odd: function($elem) {
              $elem.addClass('odd');
            }
          });

          return $selects.children();
        };

        var dataProvider = function(step, providerArgs, callback) {
          // Call appropriate data provider
          args.steps[step - 1]($.extend(providerArgs, {
            currentData: cloudStack.serializeForm($form),
						initArgs: args,
						context: context
          }));
        };

        var dataGenerators = {
          setup: function($step, formData) {
            var originalValues = function(formData) {
              $step.find('select').val(
                formData.zoneid
              );

              $step.find('input[type=radio]').filter(function() {
                return $(this).val() == formData['select-template'];
              }).click();
            };

            return {
              response: {
                success: function(args) {
                  // Zones
                  $(args.data.zones).each(function() {
                    $step.find('.select-zone select').append(
                      $('<option>')
                        .attr({
                          value: this.id,
                          'wizard-field': 'zone'
                        })
                        .html(this.name)
                    );
                  });

                  originalValues(formData);
                }
              }
            };
          },

          'select-iso': function($step, formData) {
            var originalValues = function(formData) {
              var $inputs = $step.find('.wizard-step-conditional:visible')
                    .find('input[type=radio]');
              var $selected = $inputs.filter(function() {
                return $(this).val() == formData.templateid;
              });

              if (!$selected.size()) {
                $inputs.filter(':first').click();
              } else {
                $selected.click();
              }
              $step.find('select[name=hypervisorid]:visible').val(
                formData.hypervisorid
              );
            };

            $step.find('.wizard-step-conditional').hide();

            return {
              response: {
                success: function(args) {
                  if (formData['select-template']) {
                    $step.find('.wizard-step-conditional').filter(function() {
                      return $(this).hasClass(formData['select-template']);
                    }).show();
                  } else {
                    $step.find('.select-iso').show();
                  }
                  var makeIsos = function(type, append) {
                    var $selects = makeSelects('templateid', args.data.templates[type], {
                      name: 'name',
                      desc: 'displaytext',
                      id: 'id'
                    }, {
                      'wizard-field': 'template'
                    });
                    var $templateHypervisor = $step.find('input[type=hidden][wizard-field=hypervisor]');

                    // Get hypervisor from template
                    if (type == 'featuredtemplates' || type == 'communitytemplates' || type == 'mytemplates') {                    
                      $selects.each(function() {
                        var $select = $(this);
                        var template = $.grep(args.data.templates[type], function(tmpl, v) {
                          return tmpl.id == $select.find('input').val();
                        })[0];

                        $select.change(function() {
                          $templateHypervisor
                            .attr('disabled', false)
                            .val(template.hypervisor);
                        });
                      });
                    } else {
                      $templateHypervisor.attr('disabled', 'disabled');
                    }

                    if (type == 'featuredisos' || type == 'communityisos' || type == 'myisos') {
                      // Create hypervisor select
                      $selects.find('input').bind('click', function() {
                        var $select = $(this).closest('.select');

                        //$select.siblings().removeClass('selected').find('.hypervisor').remove(); //SelectISO has 3 tabs now. This line only remove hypervisor div in the same tab, not enough. The following 3 lines will remove hypervisor div in all of 3 tabs.
                        $("#instance-wizard-featured-isos .select-container div.selected").removeClass('selected').find('div.hypervisor').remove();
                        $("#instance-wizard-community-isos .select-container div.selected").removeClass('selected').find('div.hypervisor').remove();
                        $("#instance-wizard-my-isos .select-container div.selected").removeClass('selected').find('div.hypervisor').remove();

                        $select.addClass('selected').append(
                          $('<div>').addClass('hypervisor')
                            .append($('<label>').html('Hypervisor:'))
                            .append($('<select>').attr({ name: 'hypervisorid' }))
                        );

                        // Get hypervisor data
                        $(args.data.hypervisors).each(function() {
                          $select.find('select').append(
                            $('<option>').attr({
                              value: this[args.hypervisor.idField],
                              'wizard-field': 'hypervisor'
                            })
                              .html(this[args.hypervisor.nameField])
                          );
                        });
                      });
                    }

                    append($selects);
                  };

                  // Featured ISOs
                  $(
                    [
                      ['featuredtemplates', 'instance-wizard-featured-templates'],
                      ['communitytemplates', 'instance-wizard-community-templates'],
                      ['mytemplates', 'instance-wizard-my-templates'],

                      ['featuredisos', 'instance-wizard-featured-isos'],
                      ['communityisos', 'instance-wizard-community-isos'],
                      ['myisos', 'instance-wizard-my-isos']
                      //['isos', 'instance-wizard-all-isos']
                    ]
                  ).each(function() {
                    var item = this;
                    var $selectContainer = $wizard.find('#' + item[1]).find('.select-container');

                    makeIsos(item[0], function($elem) {
                      $selectContainer.append($elem);
                    });
                  });

                  originalValues(formData);
                }
              }
            };
          },

          'service-offering': function($step, formData) {
            var originalValues = function(formData) {
              if (formData.serviceofferingid) {
                $step.find('input[type=radio]').filter(function() {
                  return $(this).val() == formData.serviceofferingid;
                }).click();
              } else {
                $step.find('input[type=radio]:first').click();
              }
            };

            return {
              response: {
                success: function(args) {
                  $step.find('.content .select-container').append(
                    makeSelects('serviceofferingid', args.data.serviceOfferings, {
                      name: 'name',
                      desc: 'displaytext',
                      id: 'id'
                    }, {
                      'wizard-field': 'service-offering'
                    })
                  );

                  originalValues(formData);
                }
              }
            };
          },

          'data-disk-offering': function($step, formData) {
            var originalValues = function(formData) {
              var $targetInput = $step.find('input[type=radio]').filter(function() {
                return $(this).val() == formData.diskofferingid;
              }).click();

              if (!$targetInput.size()) {
                $step.find('input[type=radio]:visible').filter(':first').click();
              }
            };

            $step.find('.section.custom-size').hide();

            return {
              response: {
                success: function(args) {
                  $step.removeClass('custom-disk-size');
                  if (args.required) {
                    $step.find('.section.no-thanks').hide();
                    $step.addClass('required');
                  } else {
                    $step.find('.section.no-thanks').show();
                    $step.removeClass('required');
                  }

                  $step.find('.content .select-container').append(
                    makeSelects('diskofferingid', args.data.diskOfferings, {
                      id: 'id',
                      name: 'name',
                      desc: 'displaytext'
                    }, {
                      'wizard-field': 'disk-offering'
                    })
                  );

                  $step.find('input[type=radio]').bind('change', function() {
                    var $target = $(this);
                    var val = $target.val();
                    var item = $.grep(args.data.diskOfferings, function(elem) {
                      return elem.id == val;
                    })[0];

                    if (!item) return true;

                    var custom = item[args.customFlag];

                    $step.find('.custom-size-label').remove();

                    if (custom) {
                      $target.parent().find('.name')
                        .append(
                          $('<span>').addClass('custom-size-label')
                            .append(': ')
                            .append(
                              $('<span>').addClass('custom-disk-size').html(
                                $step.find('.custom-size input[name=size]').val()
                              )
                            )
                            .append(' GB')
                        );
                      $target.parent().find('.select-desc .desc')
                        .append(
                          $('<span>').addClass('custom-size-label')
                            .append(', ')
                            .append(
                              $('<span>').addClass('custom-disk-size').html(
                                $step.find('.custom-size input[name=size]').val()
                              )
                            )
                            .append(' GB')
                        );
                      $step.find('.section.custom-size').show();
                      $step.addClass('custom-disk-size');
                      $target.closest('.select-container').scrollTop(
                        $target.position().top
                      );
                    } else {
                      $step.find('.section.custom-size').hide();
                      $step.removeClass('custom-disk-size');
                    }

                    return true;
                  });

                  originalValues(formData);
                }
              }
            };
          },

          'affinity': function($step, formData) {
            return {
              response: {
                success: function(args) {                  
                  if (args.data.affinityGroups && args.data.affinityGroups.length) {
                    $step.prepend(
                      $('<div>').addClass('main-desc').append(
                        $('<p>').html(_l('message.select.affinity.groups'))
                      )
                    );
                    $step.find('.select-container').append(
                      makeSelects(
                        'affinity-groups', 
                        args.data.affinityGroups, 
                        {
                          name: 'name',
                          desc: 'description',
                          id: 'id'
                        }, 
                        {
                          type: 'checkbox',
                          'wizard-field': 'affinity-groups'
                        },
                        args.data.selectedObj
                      )
                    ); 
                  } else {
                    $step.find('.select-container').append($('<p>').html(_l('message.no.affinity.groups')));
                  }
                }
              }
            };
          },

          'network': function($step, formData) {
            var showAddNetwork = true;

            var checkShowAddNetwork = function($newNetwork) {
              if (!showAddNetwork) {
                $newNetwork.hide();
              } else {
                $newNetwork.show();
              }
            };

            var originalValues = function(formData) {
              // Default networks
              $step.find('input[type=radio]').filter(function() {
                return $(this).val() == formData['defaultNetwork'];
              }).click();

              // Optional networks
              var selectedOptionalNetworks = [];

              if ($.isArray(formData['shared-networks']) != -1) {
                $(formData['shared-networks']).each(function() {
                  selectedOptionalNetworks.push(this);
                });
              } else {
                selectedOptionalNetworks.push(formData['shared-networks']);
              }

              var $checkboxes = $step.find('input[name=shared-networks]');
              $(selectedOptionalNetworks).each(function() {
                var networkID = this;
                $checkboxes.filter(function() {
                  return $(this).val() == networkID;
                }).attr('checked', 'checked');
              });
            };

            var $newNetwork = $step.find('.new-network');
            var $newNetworkCheckbox = $newNetwork.find('input[type=checkbox]');

            // Setup new network field
            $newNetworkCheckbox.unbind('click');
            $newNetworkCheckbox.click(function() {
              $newNetwork.toggleClass('unselected');

              // Select another default if hiding field
              if ($newNetwork.hasClass('unselected')) {
                $step.find('input[type=radio]:visible:first').click();
              } else {
                $newNetwork.find('input[type=radio]').click();
              }
            });

            setTimeout(function() {
              var $checkbox = $step.find('.new-network input[type=checkbox]');
              var $newNetwork = $checkbox.closest('.new-network');

              if ($step.find('.select.my-networks .select-container .select:visible').size()) {
                $checkbox.attr('checked', false);
                $newNetwork.addClass('unselected');
              } else {
                $newNetwork.find('input[name=defaultNetwork]').filter('[value=new-network]').click();
              }

              $checkbox.change();
            });

            // Show relevant conditional sub-step if present
            $step.find('.wizard-step-conditional').hide();

            if ($.isFunction(args.showAddNetwork)) {
              showAddNetwork = args.showAddNetwork({
                data: formData,
                context: context
              });
            }

            // Filter network list by VPC ID
            var filterNetworkList = function(vpcID) {
              var $selects = $step.find('.my-networks .select-container .select');
              var $visibleSelects = $($.grep($selects, function(select) {
                var $select = $(select);
                
                return args.vpcFilter($select.data('json-obj'), vpcID);
              }));
              var $addNetworkForm = $step.find('.select.new-network');
              var $addNewNetworkCheck = $addNetworkForm.find('input[name=new-network]');

              // VPC networks cannot be created via instance wizard
              if (vpcID != -1) {
                $step.find('.my-networks .select-container').addClass('single-select');
                $addNetworkForm.hide();

                if ($addNewNetworkCheck.is(':checked')) {
                  $addNewNetworkCheck.click();
                  $addNewNetworkCheck.attr('checked', false);
                }
              } else {
                $step.find('.my-networks .select-container').removeClass('single-select');
                $addNetworkForm.show();
                checkShowAddNetwork($addNetworkForm);
              }
              
              $selects.find('input[type=checkbox]').attr('checked', false);
              $selects.hide();
              $visibleSelects.show();

              // Select first visible item by default
              $visibleSelects.filter(':first')
                .find('input[type=radio]')
                .click();

              cloudStack.evenOdd($visibleSelects, 'div.select', {
                even: function($elem) {
                  $elem.removeClass('odd');
                  $elem.addClass('even');
                },
                odd: function($elem) {
                  $elem.removeClass('even');
                  $elem.addClass('odd');
                }
              });
            };

            var $vpcSelect = $step.find('select[name=vpc-filter]');

            $vpcSelect.unbind('change');
            $vpcSelect.change(function() {
              filterNetworkList($vpcSelect.val());
            });

            return {
              response: {
                success: function(args) {
                  var vpcs = args.data.vpcs;
                  var addClass = args.addClass;
                  var removeClass = args.removeClass;

                  // Populate VPC drop-down
                  $vpcSelect.html('');
                  $(vpcs).map(function(index, vpc) {
                    var $option = $('<option>');
                    var id = vpc.id;
                    var description = vpc.name;

                    $option.attr('value', id);
                    $option.html(description);
                    $option.appendTo($vpcSelect);
                  });

                  // 'No VPC' option
                  $('<option>').attr('value', '-1').html(_l('ui.listView.filters.all')).prependTo($vpcSelect);

                  $vpcSelect.val(-1);
                  
                  // Populate network offering drop-down
                  $(args.data.networkOfferings).each(function() {
                    $('<option>')
                      .val(this.id)
                      .html(this.name)
                      .appendTo($newNetwork.find('select'));
                  });

                  if (args.type) {
                    $step.find('.wizard-step-conditional').filter(function() {
                      return $(this).hasClass(args.type);
                    }).show();
                  } else {
                    $step.find('.select-network').show();
                  }

                  // My networks
                  $step.find('.my-networks .select-container').append(
                    makeSelects('my-networks', args.data.networkObjs, {
                      name: 'name',
                      desc: 'type',
                      id: 'id'
                    }, {
                      type: 'checkbox',
                      'wizard-field': 'my-networks',
                      secondary: {
                        desc: 'Default',
                        name: 'defaultNetwork',
                        type: 'radio',
                        'wizard-field': 'default-network'
                      }
                    })
                  );

                  // Show non-VPC networks by default
                  filterNetworkList(-1);

                  // Security groups (alt. page)
                  $step.find('.security-groups .select-container').append(
                    makeSelects('security-groups', args.data.securityGroups, {
                      name: 'name',
                      desc: 'description',
                      id: 'id'
                    }, {
                      type: 'checkbox',
                      'wizard-field': 'security-groups'
                    })
                  );

                  originalValues(formData);
                  checkShowAddNetwork($newNetwork);
                }
              }
            };
          },

          'review': function($step, formData) {
            $step.find('[wizard-field]').each(function() {
              var field = $(this).attr('wizard-field');
              var fieldName;
              var $input = $wizard.find('[wizard-field=' + field + ']').filter(function() {
                return ($(this).is(':selected') ||
                        $(this).is(':checked') ||
                        $(this).attr('type') == 'hidden') &&
                  $(this).is(':not(:disabled)');
              });

              if ($input.is('option')) {
                fieldName = $input.html();
              } else if ($input.is('input[type=radio]')) {
                // Choosen New network as default
                if ($input.parents('div.new-network').size()) {
                  fieldName = $input.closest('div.new-network').find('input[name="new-network-name"]').val();
                  // Choosen Network from existed
                } else if ($input.parents('div.my-networks').size()) {
                  fieldName = $input.closest('div.select').find('.select-desc .name').html();
                } else {
                  fieldName = $input.parent().find('.select-desc .name').html();
                }
              } else if ($input.eq(0).is('input[type=checkbox]')) {
                fieldName = '';
                $input.each(function(index) {
                  if (index != 0) fieldName += '<br />';
                  fieldName += $(this).next('div.select-desc').find('.name').html();
                });
              } else if ($input.is('input[type=hidden]')) {
                fieldName = $input.val();
              }

              if (fieldName) {
                $(this).html(fieldName);
              } else {
                $(this).html('(' + _l('label.none') + ')');
              }

              var conditionalFieldFrom = $(this).attr('conditional-field');
              if (conditionalFieldFrom) {
                if ($wizard.find('.'+conditionalFieldFrom).css('display') == 'block') {
                  $(this).closest('div.select').show();
                } else {
                  $(this).closest('div.select').hide();
                }
              }
            });
          }
        };

        // Go to specified step in wizard,
        // updating nav items and diagram
        var showStep = function(index, options) {
          if (!options) options = {};
          var targetIndex = index - 1;

          if (index <= 1) targetIndex = 0;
          if (targetIndex == $steps.size()) {
            completeAction();
            return;
          }

          var $targetStep = $($steps.hide()[targetIndex]).show();
          var stepID = $targetStep.attr('wizard-step-id');
          var formData = cloudStack.serializeForm($form);

          if (!$targetStep.hasClass('loaded')) {
            // Remove previous content
            if (!$targetStep.hasClass('review')) { // Review row content is not autogenerated
              $targetStep.find('.select-container:not(.fixed) div, option:not(:disabled)').remove();
            }

            dataProvider(
              index,
              dataGenerators[stepID](
                $targetStep,
                formData
              )
            );

            if (!$targetStep.hasClass('repeat') &&
                !$targetStep.hasClass('always-load')) $targetStep.addClass('loaded');
          }

          // Show launch vm button if last step
          var $nextButton = $wizard.find('.button.next');
          $nextButton.find('span').html(_l('label.next'));
          $nextButton.removeClass('final');
          if ($targetStep.hasClass('review')) {
            $nextButton.find('span').html(_l('label.launch.vm'));
            $nextButton.addClass('final');
          }

          // Hide previous button on first step
          var $previousButton = $wizard.find('.button.previous');
          if (index == 1) $previousButton.hide();
          else $previousButton.show();

          // Update progress bar
          var $targetProgress = $progress.removeClass('active').filter(function() {
            return $(this).index() <= targetIndex;
          }).toggleClass('active');

          // Update diagram; show/hide as necessary
          $diagramParts.filter(function() {
            return $(this).index() <= targetIndex;
          }).fadeIn('slow');
          $diagramParts.filter(function() {
            return $(this).index() > targetIndex;
          }).fadeOut('slow');

          setTimeout(function() {
            if (!$targetStep.find('input[type=radio]:checked').size()) {
              $targetStep.find('input[type=radio]:first').click();
            }
          }, 50);
        };

        // Events
        $wizard.click(function(event) {
          var $target = $(event.target);
          var $activeStep = $form.find('.step:visible');

          // Next button
          if ($target.closest('div.button.next').size()) {
            // Make sure ISO or template is selected
            if ($activeStep.hasClass('select-iso') &&
                !$activeStep.find('.content:visible input:checked').size()) {
              cloudStack.dialog.notice({ message: 'message.step.1.continue' });
              return false;
            }

            //step 5 - select network
            if($activeStep.find('.wizard-step-conditional.select-network:visible').size() > 0) {
              var data = $activeStep.data('my-networks');

              if (!data) {
                $activeStep.closest('form').data('my-networks', cloudStack.serializeForm(
                  $activeStep.closest('form')
                )['my-networks']);
              }

              if($activeStep.find('input[type=checkbox]:checked').size() == 0) {  //if no checkbox is checked
                cloudStack.dialog.notice({ message: 'message.step.4.continue' });
                return false;
              }

              if ($activeStep.hasClass('next-use-security-groups')) {
                var advSGFilter = args.advSGFilter({
                  data: cloudStack.serializeForm($form)
                });

                if (advSGFilter == 0) { //when total number of selected sg networks is 0, then 'Select Security Group' is skipped, go to step 6 directly
                  showStep(6);
                }
								else { //when total number of selected sg networks > 0
								  if($activeStep.find('input[type=checkbox]:checked').size() > 1) {  //when total number of selected networks > 1
									  cloudStack.dialog.notice({ message: "Can't create a vm with multiple networks one of which is Security Group enabled" });
                    return false;
									}									  
								}								
              }
            }
						
						//step 6 - review (spcifiy displyname, group as well)		
						if ($activeStep.hasClass('review')) {						  
						  if($activeStep.find('input[name=displayname]').size() > 0 && $activeStep.find('input[name=displayname]').val().length > 0) {
							  //validate 
								var b = cloudStack.validate.vmHostName($activeStep.find('input[name=displayname]').val());								
								if(b == false)
								  return false;
							}
            }						
						
            if (!$form.valid()) {
              if ($form.find('input.error:visible, select.error:visible').size()) {
                return false;
              }
            }

            if ($activeStep.hasClass('repeat')) {
              showStep($steps.filter(':visible').index() + 1);
            } else {
              showStep($steps.filter(':visible').index() + 2);
            }

            return false;
          }

          // Previous button
          if ($target.closest('div.button.previous').size()) {
            var $step = $steps.filter(':visible');
            var $networkStep = $steps.filter('.network');
            var index = $step.index();

            $networkStep.removeClass('next-use-security-groups');

            if (index) {
              if (index == $steps.size() - 1 && $networkStep.hasClass('next-use-security-groups')) {
                showStep(5);
              } else if ($activeStep.find('.select-security-group:visible').size() &&
                         $activeStep.find('.select-network.no-add-network').size()) {
                showStep(5);
              } else {
                showStep(index);
              }
            }

            return false;
          }

          // Close button
          if ($target.closest('div.button.cancel').size()) {
            close();

            return false;
          }

          // Edit link
          if ($target.closest('div.edit').size()) {
            var $edit = $target.closest('div.edit');

            showStep($edit.find('a').attr('href'));

            return false;
          }

          return true;
        });

        showStep(1);

        $wizard.bind('change', function(event) {
          var $target = $(event.target);
          var $step = $target.closest('.step');
          var $futureSteps = $step.siblings().filter(function() {
            return $(this).index() > $step.index();
          });

          // Reset all fields in futher steps
          $futureSteps.removeClass('loaded');
        });

        var maxCustomDiskSize = args.maxDiskOfferingSize ?
              args.maxDiskOfferingSize() : 100;

        // Setup tabs and slider
        $wizard.find('.section.custom-size .size.max span').html(maxCustomDiskSize);
        $wizard.find('.tab-view').tabs();
        $wizard.find('.slider').slider({
          min: 1,
          max: maxCustomDiskSize,
          start: function(event) {
            $wizard.find('div.data-disk-offering div.custom-size input[type=radio]').click();
          },
          slide: function(event, ui) {
            $wizard.find('div.data-disk-offering div.custom-size input[type=text]').val(
              ui.value
            );
            $wizard.find('div.data-disk-offering span.custom-disk-size').html(
              ui.value
            );
          }
        });

         $wizard.find('div.data-disk-offering div.custom-size input[type=text]').bind('change',function() {
                var old =   $wizard.find('div.data-disk-offering div.custom-size input[type=text]').val();
                $wizard.find('div.data-disk-offering span.custom-disk-size').html(_s(old));
         });


        return $wizard.dialog({
          title: _l('label.vm.add'),
          width: 800,
          height: 570,
          closeOnEscape: false,
          zIndex: 5000
        })
          .closest('.ui-dialog').overlay();
      };

      instanceWizard(args);
    };
  };
})(jQuery, cloudStack);