/*---------------------------------------------------------------------------------------------
* Copyright (c) Bentley Systems, Incorporated. All rights reserved.
* See LICENSE.md in the project root for license terms and full copyright notice.
*--------------------------------------------------------------------------------------------*/
@import "_helpers";

// Order matters, last is top-most on screen.
$uicore-internal-z-index-layers:
  view-overlay,
  widget-grip,
  dragged-widget,
  zone-target,
  zone-outline,
  toolbar-panels,
  tool-settings-popup,
  status-overflow-popup,
  status-popup,
  status-message,
  modal-frontstage-overlay,
  modal-frontstage,
  dialog,
  dialog-popup,
  tooltip,
  context-menu-z,
  dragdrop,
  cursor-overlay,
  drag-target,
  drag-preview,
  backstage-overlay,
  backstage,
  keyin-palette-overlay;

$uicore-z-index-step: 1000;

@function uicore-internal-get-next-z-index-step($counter) {
  @return $counter + $uicore-z-index-step;
}

$uicore-internal-z-index-layer-map: uicore-map-from-array-with-result-arg($uicore-internal-z-index-layers, get-function(uicore-internal-get-next-z-index-step), 0);

// Use this to get z-index value
@function uicore-get-z-index($layer) {
  @if map_has_key($uicore-internal-z-index-layer-map, $layer) {
    @return map-get($uicore-internal-z-index-layer-map, $layer);
  }
  @else {
    @error "Failed to get z-index for $layer: #{$layer}";
  }
}

// Use this to add z-index property
@mixin uicore-z-index($layer) {
  z-index: uicore-get-z-index($layer);
}

// Use this to add a CSS variable for each z-index layer
@mixin uicore-z-index-variables() {
  @each $layer in $uicore-internal-z-index-layers {
    $z-index: uicore-get-z-index($layer);
    --uicore-z-index-#{$layer}: #{$z-index};
  }
}