@import 'ui-variables';
@import 'syntax-variables';

@revisionBubbleDiameter: 10px;
@revisionBubbleShadowRadius: 4px;

.nuclide-diff-view-container {
  height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  -webkit-user-select: none;
}

.nuclide-diff-view-component {
  flex-grow: 1;
  /* Let the `<atom-pane-container>` fill the height since it already has `flex: 1` applied. */
  display: flex;
}

.nuclide-diff-view-removable-tag {
  margin-left: 2px;
  margin-right: 2px;
  float: left;
}

.nuclide-diff-view-tree {
  z-index: 3;
  border-top: 1px solid @pane-item-border-color;
  -webkit-user-select: none;
  white-space: nowrap;
  overflow: auto;
  cursor: default;

  // Fill vertical and horizontal space if tree is smaller than panel.
  min-width: 100%;
  min-height: 100%;
}

.nuclide-diff-timeline {
  z-index: 3;
  border-top: 1px solid @pane-item-border-color;
  width: 100%;
  color: @text-color;

  .text-monospace {
    // TODO Use a standard Atom font-family https://github.com/atom/atom/issues/8800
    font-family: Menlo, Consolas, monospace;
  }

  .revision {
    position: relative;
  }

  .revision-timeline-wrap {
    height: 100%;
    overflow: auto;
  }

  .revision-selector  {
    width: 100%;
    white-space: nowrap;
    display: flex;
  }

  .revisions {
    display: flex;
    flex-direction: column;
    position: relative;
  }

  .revision--actionable {
    cursor: pointer;
  }

  .revision:hover .revision-label {
    font-weight: bold;
  }

  .revision:hover .revision-bubble {
    background-color: @text-color-info;
    box-shadow: 0 0 0 2px @text-color-info;
  }

  .revision:hover .revision-bubble--uncommitted {
    background-color: @text-color-warning;
    box-shadow: 0 0 0 2px @text-color-warning;
  }

  .nuclide-diff-rev-side-button {
    margin-left: 0.4em;
  }

  .revision:hover .revision-bubble--no-changes {
    /*
     * Match the app background color to give the illusion of transparency while properly cutting
     * off the underlying line that connects this bubble to the one below it.
     */
    background-color: @app-background-color;
  }

  .revision-bubble {
    background-color: @text-color-info;
    border-radius: @revisionBubbleDiameter;
    float: left;
    height: @revisionBubbleDiameter;
    width: @revisionBubbleDiameter;
    margin: @revisionBubbleShadowRadius;
  }

  .revision-bubble::after {
    bottom: -8px; /* Pull into the revision bubble below */
    content: " ";
    display: block;
    width: 1px;
    background-color: @text-color-info;
    margin-left: 5px;
    position: absolute;
    top: 5px;
    z-index: -1;
  }

  .revision-bubble--uncommitted {
    background-color: @text-color-warning;
  }

  .revision-bubble--no-changes {
    /*
     * Match the app background color to give the illusion of transparency while properly cutting
     * off the underlying line that connects this bubble to the one below it.
     */
    background-color: @app-background-color;
  }

  .selected-revision-inrange .revision-bubble:after {
    background: @text-color-info;
    content: " ";
    margin-left: 1px;
    margin-right: 1px;
    width: 8px;
  }

  .selected-revision-inrange .revision-bubble--uncommitted:after {
    background: linear-gradient(to bottom, @text-color-warning, @text-color-info);
  }

  .selected-revision-last .revision-bubble::after {
    display: none;
  }

  .revision-label {
    margin-bottom: 12px;
    margin-left: 24px;
  }

  .selected-revision-start,
  .selected-revision-end {
    font-weight: bold;
  }

  .selected-revision-inrange, .selected-revision-end {
    .revision-label {
      color: @text-color-info;
    }

    .revision-label--uncommitted {
      color: @text-color-warning;
    }
  }

  .selected-revision-start .revision-bubble,
  .selected-revision-end .revision-bubble {
    box-shadow: 0 0 0 @revisionBubbleShadowRadius fade(@text-color-info, 25%);
  }

  .selected-revision-start .revision-bubble--uncommitted,
  .selected-revision-end .revision-bubble--uncommitted {
    box-shadow: 0 0 0 2px @text-color-warning;
  }
}

.diff-view-count.tool-bar-btn {
  &::after {
    content: attr(data-count);
    font-size: 0.8em;
    margin-top: 13px;
    position: absolute;
    text-shadow: 0 0px 2px @base-border-color;
  }
  &.max-count::after {
    margin-left: -4px;
  }
  &.positive-count {
    color: @text-color-warning;
    &:hover {
      color: @text-color-warning;
    }
  }
}

.nuclide-diff-view-block-offset {
  & when (lightness(@syntax-background-color) <= 50% ) {
    @diff-block-offset-cross-color: lighten(@syntax-background-color, 3%);
    .styleBlockOffset();
  }

  & when ( lightness(@syntax-background-color) >= 50% ) {
    @diff-block-offset-cross-color: darken(@syntax-background-color, 3%);
    .styleBlockOffset();
  }
}

.styleBlockOffset() {
  background: repeating-linear-gradient(
    -45deg,
    @diff-block-offset-cross-color,
    @diff-block-offset-cross-color, 5px,
    transparent 5px,
    transparent 10px
  );
}

// Default colors for themes that do not specify any.
@add-color: #0c0;
@add-color: @text-color-success;

@remove-color: #c00;
@remove-color: @text-color-error;

@blendAmount: 10%;

atom-text-editor, atom-text-editor::shadow {

  .diff-view-insert .region {
    @add-color-faded: fade(@add-color, @blendAmount);
    border-left-style: solid;
    border-left-color: @add-color;
    border-left-width: 1px;
    background-color: @add-color-faded;
  }

  .diff-view-delete .region {
    @remove-color-faded: fade(@remove-color, @blendAmount);
    border-left-style: solid;
    border-left-color: @remove-color;
    border-left-width: 1px;
    background-color: @remove-color-faded;
  }

}

.nuclide-diff-view-navigation-bar {
  height: 100%;
  width: 100%;
}

.nuclide-diff-editor-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.nuclide-diff-editor-wrapper {
  display: flex;
  flex-grow: 1;
  position: relative;
}

.nuclide-diff-mode {
  z-index: 3;
  display: flex;
  flex-direction: column;
  border-top: 1px solid @pane-item-border-color;

  .message-editor-wrapper {
    display: flex;
    flex-grow: 1;
    position: relative;
  }

  .commit-form-wrapper {
    background-color: inherit;
    margin-left: 5px;
    margin-right: 5px;
    overflow-y: auto;

    /*
     * overriding styles for atom-text-editor to make mini and multiline
     * editor have the similar color schemes based on the themes.
     */
    atom-text-editor,
    atom-text-editor[mini] {
      background-color: @input-background-color;
      line-height: @component-line-height;
      border-radius: @component-border-radius;
      padding-left: @component-padding/2;

      &.is-focused {
        border-color: @background-color-selected;
        box-shadow: 0 0 0 1px @background-color-selected;
      }
    }

    /*
     * This is to prevent the cursor line to have a different background
     * compared to the mini atom inputs.
     *
     * Ref: https://atom.io/packages/block-cursor
     */
     atom-text-editor::shadow .lines .line.cursor-line {
       background-color: transparent;
     }
  }
}

.nuclide-diff-view-navigation-target {
  position: absolute;
  width: 100%;
  cursor: pointer;

  &.added {
    background-color: @background-color-success;
  }

  &.removed {
    background-color: @background-color-error;
  }

  &.modified {
    background-color: @background-color-warning;
  }
}

/*
 * Animation originally taken from [atom/settings-view][1] to match its installing/uninstalling
 * buttons.
 *
 * [1] https://github.com/atom/settings-view/blob/cc409bacf1c44dbd7d27626809b11ea7a01639a0/styles/package-card.less#L296
 */
@-webkit-keyframes btn-progress {
  100% { background-position: -10px 0px; }
}

/*
 * Prepend another class selector, `nuclide-diff-view-component` in this case, to beat the
 * specificity of core styles with 2 classes + 1 tag.
 */
.nuclide-diff-view-component .btn.btn-progress,
.nuclide-diff-view-component .btn.btn-progress:hover {
  background-image: linear-gradient(to right, transparent 50%, hsla(0,0%,0%,.15) 50%);
  background-size: 10px 100%;
  -webkit-animation: btn-progress .5s linear infinite;
}