text: define([
      'jquery',
      'underscore',
      'backbone',
      'common',
      'file-tree',
      'app/views/share',
      'app/views/dialogs/dirent-mvcp',
      'app/views/folder-perm',
      'app/views/widgets/hl-item-view',
      'app/views/widgets/dropdown'
  ], function($, _, Backbone, Common, FileTree, ShareView, DirentMvcpDialog,
      FolderPermView, HLItemView, DropdownView) {
      'use strict';
  
      var DirentView = HLItemView.extend({
          tagName: 'tr',
          attributes: {
              draggable: 'true'
          },
  
          fileTemplate: _.template($('#dirent-file-tmpl').html()),
          fileMobileTemplate: _.template($('#dirent-file-mobile-tmpl').html()),
          dirTemplate: _.template($('#dirent-dir-tmpl').html()),
          dirMobileTemplate: _.template($('#dirent-dir-mobile-tmpl').html()),
          renameTemplate: _.template($("#rename-form-template").html()),
  
          initialize: function(options) {
              HLItemView.prototype.initialize.call(this);
  
              this.dirView = options.dirView;
              this.dir = this.dirView.dir;
  
              this.listenTo(this.model, "change", this.render);
              this.listenTo(this.model, 'remove', this.remove); // for multi dirents: delete, mv
          },
  
          render: function() {
              var dir = this.dir;
              var dirent_path = Common.pathJoin([dir.path, this.model.get('obj_name')]);
              var is_pro = app.pageOptions.is_pro;
              var file_audit_enabled = app.pageOptions.file_audit_enabled;
              var file_icon_size = Common.isHiDPI() ? 48 : 24;
              var template;
              if (this.model.get('is_dir')) {
                  template = $(window).width() < 768 ? this.dirMobileTemplate : this.dirTemplate;
              } else {
                  template = $(window).width() < 768 ? this.fileMobileTemplate : this.fileTemplate;
              }
  
              this.$el.html(template({
                  dirent: this.model.attributes,
                  dirent_path: dirent_path,
                  encoded_path: Common.encodePath(dirent_path),
                  icon_url: this.model.getIconUrl(file_icon_size),
                  url: this.model.getWebUrl(),
                  download_url: this.model.getDownloadUrl(),
                  category: dir.category,
                  repo_id: dir.repo_id,
                  is_repo_owner: dir.is_repo_owner,
                  is_virtual: dir.is_virtual,
                  has_been_shared_out: dir.has_been_shared_out,
                  can_generate_share_link: app.pageOptions.can_generate_share_link,
                  can_generate_upload_link: app.pageOptions.can_generate_upload_link,
                  is_pro: is_pro,
                  file_audit_enabled: file_audit_enabled,
                  repo_encrypted: dir.encrypted
              }));
              this.$('.file-locked-icon').attr('title', gettext("locked by {placeholder}").replace('{placeholder}', this.model.get('lock_owner_name')));
              this.dropdown = new DropdownView({
                  el: this.$('.sf-dropdown'),
                  right: '0'
              });
  
              // for image files
              this.$('.img-name-link').magnificPopup(this.dirView.magnificPopupOptions);
  
              return this;
          },
  
          events: {
  
              'click': 'clickItem',
  
              'click .select': 'select',
              'click .file-star': 'starFile',
              'click .dirent-name': 'visitDirent',
              'click .img-name-link': 'viewImageWithPopup',
  
              // mv by 'drag & drop'
              'dragstart': 'itemDragstart',
              'dragover': 'itemDragover',
              'dragenter': 'itemDragenter',
              'dragleave': 'itemDragleave',
              'drop': 'itemDrop',
  
              'click .download-dir': 'downloadDir',
              'click .share': 'share',
              'click .delete': 'del', // 'delete' is a preserve word
              'click .rename': 'rename',
              'click .mv': 'mvcp',
              'click .cp': 'mvcp',
              'click .set-folder-permission': 'setFolderPerm',
              'click .lock-file': 'lockFile',
              'click .unlock-file': 'unlockFile',
              'click .view-details': 'viewDetails',
              'click .open-via-client': 'open_via_client'
          },
  
          _hideMenu: function() {
              this.dropdown.hide();
          },
  
          clickItem: function(e) {
              var target =  e.target || event.srcElement;
              if (this.$('td').is(target) &&
                  $('#dirent-details').css('right') == '0px') { // after `#dirent-details` is shown
                  this.viewDetails();
              }
          },
  
          select: function () {
              var $checkbox = this.$('[type=checkbox]');
              if ($checkbox.prop('checked')) {
                  this.model.set({'selected':true}, {silent:true}); // do not trigger the 'change' event.
              } else {
                  this.model.set({'selected':false}, {silent:true});
              }
  
              var dirView = this.dirView;
              var $dirents_op = dirView.$('#multi-dirents-op');
              var $toggle_all_checkbox = dirView.$('th [type=checkbox]');
              var checked_num = 0;
              dirView.$('tr:gt(0) [type=checkbox]').each(function() {
                  if ($(this).prop('checked')) {
                      checked_num += 1;
                  }
              });
  
              var $curDirOps = dirView.$('#cur-dir-ops');
  
              if (checked_num > 0) {
                  $dirents_op.css({'display':'inline-block'});
                  $curDirOps.hide();
              } else {
                  $dirents_op.hide();
                  $curDirOps.show();
              }
              dirView.updateDirOpBarUI();
              if (checked_num == dirView.$('tr:gt(0)').length) {
                  $toggle_all_checkbox.prop('checked', true);
              } else {
                  $toggle_all_checkbox.prop('checked', false);
              }
          },
  
          itemDragstart: function(e) {
              if (this.model.get('perm') != 'rw') {
                  return false;
              }
              var ev = e.originalEvent;
              ev.dataTransfer.setData('text/cid', this.model.cid);
              ev.dataTransfer.setData('text/is_dir', this.model.get('is_dir'));
              ev.dataTransfer.setData('text/plain', this.model.get('obj_name'));
              ev.dataTransfer.effectAllowed = 'move';
              // use the file/dir icon as drag image
              ev.dataTransfer.setDragImage(this.$('.dirent-icon img')[0], 0, 0);
          },
  
          itemDragover: function(e) {
              var ev = e.originalEvent;
              ev.preventDefault();
  
              // check if the dragged item is a dir entry
              if (ev.dataTransfer.types.length &&
                  ev.dataTransfer.types.indexOf('text/cid') == -1) {
                  return;
              }
  
              if (this.model.get('perm') != 'rw') {
                  return false;
              }
              if (!this.model.get('is_dir')) {
                  return false;
              }
              ev.dataTransfer.dropEffect = 'move';
          },
  
          itemDragenter: function(e) {
              var ev = e.originalEvent;
              ev.preventDefault();
  
              if (ev.dataTransfer.types.length &&
                  ev.dataTransfer.types.indexOf('text/cid') == -1) {
                  return;
              }
  
              if (this.model.get('perm') != 'rw') {
                  return false;
              }
              if (!this.model.get('is_dir')) {
                  return false;
              }
              this.$el.css({'background-color':'#f8f8f8'});
          },
  
          itemDragleave: function(e) {
              var ev = e.originalEvent;
              ev.preventDefault();
  
              if (ev.dataTransfer.types.length &&
                  ev.dataTransfer.types.indexOf('text/cid') == -1) {
                  return;
              }
  
              if (this.model.get('perm') != 'rw') {
                  return false;
              }
              if (!this.model.get('is_dir')) {
                  return false;
              }
              this.$el.removeAttr('style');
          },
  
          itemDrop: function(e) {
              var ev = e.originalEvent;
              ev.preventDefault();
  
              // check if the dropped item is a dir entry
              if (ev.dataTransfer.types.length &&
                  ev.dataTransfer.types.indexOf('text/cid') == -1) {
                  return;
              }
  
              if (this.model.get('perm') != 'rw') {
                  return false;
              }
              if (!this.model.get('is_dir')) {
                  return false;
              }
              this.$el.removeAttr('style');
  
              var cid = ev.dataTransfer.getData('text/cid');
              var is_dir = ev.dataTransfer.getData('text/is_dir'); // the value is string: 'true' or 'undefined'
              var obj_name = ev.dataTransfer.getData('text/plain');
  
              if (is_dir == 'true' && obj_name == this.model.get('obj_name')) {
                  // can't move a directory to itself
                  return false;
              }
  
              var dir = this.dir;
              var repo_id = dir.repo_id;
              var path = dir.path;
              var dirent_path = Common.pathJoin([path, this.model.get('obj_name')]);
              $.ajax({
                  url: Common.getUrl({'name': 'copy_move_task'}),
                  type: 'post',
                  cache: false,
                  dataType: 'json',
                  data: {
                      'src_repo_id': repo_id,
                      'src_parent_dir': path,
                      'src_dirent_name': obj_name,
                      'dst_repo_id': repo_id,
                      'dst_parent_dir': dirent_path,
                      'operation': 'move',
                      'dirent_type': is_dir == 'true' ? 'dir' : 'file'
                  },
                  beforeSend: Common.prepareCSRFToken,
                  success: function() {
                      var msg = gettext("Successfully moved %(name)s")
                          .replace('%(name)s', obj_name);
                      Common.feedback(msg, 'success');
                      dir.remove(cid);
                  },
                  error: function(xhr) {
                      if (xhr.responseText) {
                          Common.feedback($.parseJSON(xhr.responseText).error);
                      } else {
                          Common.feedback(gettext("Please check the network."), 'error');
                      }
                  }
              });
          },
  
          downloadDir: function() {
              var dir = this.dirView.dir;
              var obj_name = this.model.get('obj_name');
              Common.zipDownload(dir.repo_id, dir.path, obj_name);
              return false;
          },
  
          starFile: function() {
              var _this = this;
              var dir = this.dirView.dir;
              var starred = this.model.get('starred');
              var filePath = Common.pathJoin([dir.path, this.model.get('obj_name')]);
              if (starred) {
                  $.ajax({
                      url: Common.getUrl({'name':'starred_files'})
                          + '?repo_id=' + dir.repo_id + '&p=' + encodeURIComponent(filePath),
                      type: 'DELETE',
                      cache: false,
                      dataType: 'json',
                      beforeSend: Common.prepareCSRFToken,
                      success: function() {
                          _this.model.set({'starred':false});
                      },
                      error: function(xhr) {
                          Common.ajaxErrorHandler(xhr);
                      }
                  });
              } else {
                  $.ajax({
                      url: Common.getUrl({'name':'starred_files'}),
                      type: 'POST',
                      cache: false,
                      dataType: 'json',
                      beforeSend: Common.prepareCSRFToken,
                      data: {
                          'repo_id': dir.repo_id,
                          'p': filePath
                      },
                      success: function() {
                          _this.model.set({'starred':true});
                      },
                      error: function(xhr) {
                          Common.ajaxErrorHandler(xhr);
                      }
                  });
              }
  
              return false;
          },
  
          visitDirent: function() {
              if ($(window).width() < 768 &&
                  !this.model.get('is_img')) { // dir or non image file
                  location.href = this.$('.dirent-name a').attr('href');
              }
          },
  
          viewImageWithPopup: function() {
              var index = $('.img-name-link', this.dirView.$dirent_list).index(this.$('.img-name-link'));
              $.magnificPopup.open(this.dirView.magnificPopupOptions, index);
          },
  
          share: function() {
              var dir = this.dir,
                  obj_name = this.model.get('obj_name'),
                  dirent_path = Common.pathJoin([dir.path, obj_name]);
  
              var options = {
                  'is_repo_owner': dir.is_repo_owner,
                  'is_virtual': dir.is_virtual,
                  'user_perm': this.model.get('perm'),
                  'repo_id': dir.repo_id,
                  'repo_encrypted': false,
                  'is_dir': this.model.get('is_dir') ? true : false,
                  'dirent_path': dirent_path,
                  'obj_name': obj_name
              };
              new ShareView(options);
  
              this._hideMenu();
              return false;
          },
  
          del: function() {
              var _this = this;
              if (this.model.get('is_img')) {
                  var index = $('.img-name-link', this.dirView.$dirent_list).index(this.$('.img-name-link'));
              }
  
              var dirent_name = this.model.get('obj_name');
              this.model.deleteFromServer({
                  success: function(data) {
                      var msg = gettext("Successfully deleted %(name)s")
                          .replace('%(name)s', dirent_name);
                      Common.feedback(msg, 'success');
  
                      _this._hideMenu();
  
                      if (_this.model.get('is_img')) {
                          _this.dirView.updateMagnificPopupOptions({'op':'delete-item', 'index':index});
                      }
                  },
                  error: function(xhr) {
                      Common.ajaxErrorHandler(xhr);
                  }
              });
              return false;
          },
  
          rename: function() {
              var _this = this;
              var dirent_name = this.model.get('obj_name');
  
              var form = $(this.renameTemplate({
                  dirent_name: dirent_name
              }));
  
              var $name = this.$('.dirent-name'),
                  $op = this.$('.dirent-op'),
                  $td = $name.closest('td');
              $td.attr('colspan', 2).css({
                  'width': $name.width() + $op.outerWidth(),
                  'height': $name.height()
              }).append(form);
              $op.hide();
              $name.hide();
  
              this.$el.attr('draggable', false);
  
              var $input = $('[name="newname"]', form);
              var dot_index = dirent_name.lastIndexOf('.');
              if (!this.model.get('is_dir') && dot_index != -1) {
                  $input[0].focus();
                  $input[0].setSelectionRange(0, dot_index);
              } else {
                  $input.select();
              }
  
              this._hideMenu();
              app.ui.freezeItemHightlight = true;
  
              var after_op_success = function(data) {
                  app.ui.freezeItemHightlight = false;
                  if (app.ui.currentHighlightedItem) {
                      app.ui.currentHighlightedItem.rmHighlight();
                  }
  
                  _this.$el.attr('draggable', true);
  
                  if (_this.model.get('is_img')) {
                      var index = $('.img-name-link', _this.dirView.$dirent_list).index(_this.$('.img-name-link'));
                      _this.dirView.updateMagnificPopupOptions({
                          'op': 'update-item',
                          'index': index,
                          'model': _this.model
                      }); // update the item
                  }
              };
              var cancelRename = function() {
                  app.ui.freezeItemHightlight = false;
                  if (app.ui.currentHighlightedItem) {
                      app.ui.currentHighlightedItem.rmHighlight();
                  }
                  form.remove();
                  $op.show();
                  $name.show();
                  $td.attr('colspan', 1).css({
                      'width': $name.width()
                  });
  
                  _this.$el.attr('draggable', true);
                  return false; // stop bubbling (to 'doc click to hide .hidden-op')
              };
              $('.cancel', form).click(cancelRename);
  
              var _this = this;
              form.submit(function() {
                  var new_name = $.trim($('[name="newname"]', form).val());
                  var err_msg;
  
                  if (!new_name) {
                      err_msg = gettext("It is required.");
                      Common.feedback(err_msg, 'error');
                      return false;
                  }
  
                  if (new_name.indexOf('/') != -1) {
                      err_msg = gettext("Name should not include '/'.");
                      Common.feedback(err_msg, 'error');
                       return false;
                  }
  
                  if (new_name == dirent_name) {
                      cancelRename();
                      return false;
                  }
  
                  var submit_btn = $('[type="submit"]', form);
                  Common.disableButton(submit_btn);
  
                  var after_op_error = function(xhr) {
                      var err_msg;
                      if (xhr.responseText) {
                          err_msg = $.parseJSON(xhr.responseText).error_msg;
                      } else {
                          err_msg = gettext("Failed. Please check the network.");
                      }
                      Common.feedback(err_msg, 'error');
                      Common.enableButton(submit_btn);
                  };
                  _this.model.rename({
                      newname: new_name,
                      success: after_op_success,
                      error: after_op_error
                  });
                  return false;
              });
              return false;
          },
  
          mvcp: function(e) {
              var op_type = $(e.currentTarget).hasClass('mv') ? 'mv' : 'cp';
              var options = {
                  'dir': this.dir,
                  'dirent': this.model,
                  'op_type': op_type
              };
              if (this.model.get('is_img') && op_type == 'mv') {
                  var index = $('.img-name-link', this.dirView.$dirent_list).index(this.$('.img-name-link'));
                  $.extend(options, {
                      'dirView': this.dirView,
                      'imgIndex': index
                  });
              }
  
              this._hideMenu();
              new DirentMvcpDialog(options);
              return false;
          },
  
          setFolderPerm: function() {
              var options = {
                  'obj_name': this.model.get('obj_name'),
                  'dir_path': this.dir.path,
                  'repo_id': this.dir.repo_id
              };
              this._hideMenu();
              new FolderPermView(options);
              return false;
          },
  
          lockFile: function() {
              var _this = this;
              this._hideMenu();
              this.model.lockFile({
                  success: function() {
                      _this.$el.removeClass('hl');
                  },
                  error: function(xhr) {
                      Common.ajaxErrorHandler(xhr);
                  }
              });
              return false;
          },
  
          unlockFile: function() {
              var _this = this;
              this._hideMenu();
              this.model.unlockFile({
                  success: function() {
                      _this.$el.removeClass('hl');
                  },
                  error: function(xhr) {
                      Common.ajaxErrorHandler(xhr);
                  }
              });
              return false;
          },
  
          viewDetails: function() {
              var _this = this;
  
              var file_icon_size = Common.isHiDPI() ? 48 : 24;
              var data = {
                  repo_id: this.dir.repo_id,
                  dir_path: this.dir.path,
                  icon_url: this.model.getIconUrl(file_icon_size),
                  big_icon_url: this.model.getIconUrl(192),
                  dirent: this.model.attributes,
                  thumbnail_url: '',
                  path: this.dir.repo_name + this.dir.path
              };
              if (app.pageOptions.enable_thumbnail &&
                  !this.dir.encrypted &&
                  (this.model.get('is_img') || this.model.get('is_video'))) {
                  data.thumbnail_url = Common.getUrl({
                      'name': 'thumbnail_get',
                      'repo_id': this.dir.repo_id,
                      'path': Common.encodePath(Common.pathJoin([this.dir.path, this.model.get('obj_name')])),
                      'size': 1024
                  });
              }
  
              var detailsView = this.dirView.direntDetailsView;
              detailsView.show(data);
  
              if (this.model.get('perm') == 'rw') {
                  this.getTags = function() {
                      $.ajax({
                          url: Common.getUrl({
                              'name': 'tags',
                              'repo_id': this.dir.repo_id
                          }),
                          cache: false,
                          data: {
                              'path': Common.pathJoin([this.dir.path, this.model.get('obj_name')]),
                              'is_dir': this.model.get('is_dir') ? true : false
                          },
                          dataType: 'json',
                          success: function(data) {
                              detailsView.updateTags(data);
                          },
                          error: function(xhr) {
                              var error_msg;
                              if (xhr.responseText) {
                                  var parsed_resp = $.parseJSON(xhr.responseText);
                                  error_msg = parsed_resp.error_msg || parsed_resp.detail;
                              } else {
                                  error_msg = gettext("Failed. Please check the network.");
                              }
                              detailsView.updateTags({'error_msg': error_msg});
                          }
                      });
                  };
  
                  if (this.model.get('is_file')) {
                      this.getTags();
                  }
              }
  
              // fetch other data for dir
              if (this.model.get('is_dir')) {
                  $.ajax({
                      url: Common.getUrl({
                          'name': 'dir-details',
                          'repo_id': this.dir.repo_id
                      }),
                      cache: false,
                      data: {
                          'path': Common.pathJoin([this.dir.path, this.model.get('obj_name')])
                      },
                      dataType: 'json',
                      success: function(data) {
                          detailsView.update({
                              'dir_count': data.dir_count,
                              'file_count': data.file_count,
                              'size': Common.fileSizeFormat(data.size, 1)
                          });
  
                          if (_this.model.get('perm') == 'rw') {
                              _this.getTags();
                          }
                      },
                      error: function(xhr) {
                          var error_msg;
                          if (xhr.responseText) {
                              var parsed_resp = $.parseJSON(xhr.responseText);
                              error_msg = parsed_resp.error_msg || parsed_resp.detail;
                          } else {
                              error_msg = gettext("Failed. Please check the network.");
                          }
                          detailsView.update({'error_msg': error_msg});
                      }
                  });
              }
  
              this._hideMenu();
              return false;
          },
  
          open_via_client: function() {
              this._hideMenu();
              return true;
          }
  
      });
  
      return DirentView;
  });
  