superset-frontend/packages/superset-frontend/src/dashboard/stylesheets/dnd.less

/**
 * 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.
 */
.dragdroppable {
  position: relative;
}

// Fixes ISSUE-12181 - before in chart's contract-trigger breaks drag and drop mode
.dashboard--editing {
  .contract-trigger:before {
    display: none;
  }
}

.dragdroppable--dragging {
  opacity: 0.2;
}

.dragdroppable-row {
  width: 100%;
}

.dragdroppable-column {
  .resizable-container {
    span {
      div {
        z-index: @z-index-above-dashboard-charts;
      }
    }
  }
}

/* drop indicators */
.drop-indicator {
  display: block;
  background-color: @indicator-color;
  position: absolute;
  z-index: @z-index-above-dashboard-charts;
}

.drop-indicator--top {
  top: 0;
  left: 0;
  height: 4px;
  width: 100%;
  min-width: 16px;
}

.drop-indicator--bottom {
  top: 100%;
  left: 0;
  height: 4px;
  width: 100%;
  min-width: 16px;
}

.empty-droptarget:first-child {
  .drop-indicator--bottom {
    top: 24px;
  }
}

.drop-indicator--right {
  top: 0;
  left: 100%;
  height: 100%;
  width: 4px;
  min-height: 16px;
}

.drop-indicator--left {
  top: 0;
  left: 0;
  height: 100%;
  width: 4px;
  min-height: 16px;
}

/* drag handles */
.drag-handle {
  overflow: hidden;
  width: 16px;
  cursor: move;
}

.drag-handle--left {
  width: 8px;
}

.drag-handle-dot {
  float: left;
  height: 2px;
  margin: 1px;
  width: 2px;

  &:after {
    content: '';
    background: @gray;
    float: left;
    height: 2px;
    margin: -1px;
    width: 2px;
  }
}

/* empty drop targets */
.dashboard-component-tabs-content {
  & > .empty-droptarget {
    position: absolute;
    width: 100%;
  }

  & > .empty-droptarget:first-child {
    height: 14px;
    top: -2px;
    z-index: @z-index-above-dashboard-charts;
  }

  & > .empty-droptarget:last-child {
    height: 12px;
    bottom: 0px;
  }
}

.grid-content {
  /* note we don't do a :last-child selection because
    assuming bottom empty-droptarget is last child is fragile */
  & > .empty-droptarget {
    width: 100%;
    height: 100%;
  }

  & > .empty-droptarget:first-child {
    height: 48px;
    margin-top: -24px;
    margin-bottom: -24px;
  }

  & > .empty-droptarget:only-child {
    height: 80vh;
  }
}