openproject/app/assets/stylesheets/content/drag_and_drop.sass

//-- copyright
// OpenProject is an open source project management software.
// Copyright (C) 2012-2020 the OpenProject GmbH
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2017 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See docs/COPYRIGHT.rdoc for more details.
//++

// The intend for this file is to become the place where all drag&drop styles are placed.
// As there will hopefully also be a shared style for resizing, and as those two will hopefully also share some styles
// there is also the 'modifying' grouping, which could serve as the basis for the two.

@mixin modifying--placeholder
  border: 1px dashed var(--primary-color)
  pointer-events: none
  *
    visibility: hidden

@mixin d_n_d--preview
  box-shadow: 0 0 10px 5px rgba(0, 0, 0, 0.1)

// There does not seem to be a way to add a class to the preview element
// added by cdk drag.
.cdk-drag-preview
  @include d_n_d--preview
  // Allow dragged items to appear before modals
  z-index: 10000 !important