chrome-devtools-frontend/front_end/panels/application/webMCPView.css

Chrome DevTools UI

/*
 * Copyright 2026 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

@scope to (devtools-widget > *) {
  .webmcp-view {
    height: 100%;
    width: 100%;
  }

  .call-log,
  .tool-list {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: auto;
    padding: 0;
  }

  .empty-view-scroller {
    flex: auto;
  }

  devtools-data-grid {
    flex: auto;
  }

  .data-grid {
    th {
      height: 26px;
    }

    td {
      vertical-align: middle;
    }

    tr.status-cancelled {
      color: var(--sys-color-on-surface-light);
    }

    tr.status-error {
      color: var(--sys-color-error);
    }

    tr.selected {
      background-color: var(--sys-color-tonal-container);
    }

    tbody tr.selected.status-error,
    tbody tr.selected.status-error.revealed {
      background-color: var(--sys-color-error-container);
      color: var(--sys-color-error);
    }

    tbody tr:hover .run-tool-action-button,
    tbody tr:focus-within .run-tool-action-button,
    &:focus-within tbody tr.selected .run-tool-action-button {
      display: flex;
    }
  }

  .section-title {
    display: flex;
    gap: var(--sys-size-2);
    background-color: var(--sys-color-surface1);
    padding: 0 var(--sys-size-3);
    line-height: var(--sys-size-10);
    overflow: hidden;
    align-items: center;
    flex: none;
    color: var(--sys-color-on-surface);
    border-bottom: 1px solid var(--sys-color-divider);

    devtools-button {
      margin: calc(-1 * var(--sys-size-1)) 0;
    }
  }

  .status-cell {
    display: flex;
    align-items: center;
    gap: var(--sys-size-3);
  }

  .name-cell {
    display: flex;
    gap: var(--sys-size-5);
    align-items: center;
  }

  .run-tool-action-button {
    display: none;
    width: var(--sys-size-8);
    height: var(--sys-size-8);
    padding: 0;
    border: none;
    background-color: transparent;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;

    devtools-icon {
      width: var(--sys-size-7);
      height: var(--sys-size-7);
      color: var(--sys-color-primary);
    }
  }

  .tool-details {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .tool-details-grid {
    display: grid;
    grid-template-columns: min-content 1fr;
    gap: var(--sys-size-6);
    padding: calc(0.5*var(--sys-size-6)) var(--sys-size-8);
    align-items: flex-start;
    overflow-y: auto;

    .label {
      color: var(--sys-color-on-surface-subtle);
      white-space: nowrap;
      padding: var(--sys-size-3) 0;
    }

    .value {
      user-select: text;

      &.source-code {
        color: var(--sys-color-token-property-special);
      }

      padding: var(--sys-size-3) 0;
      color: var(--sys-color-on-surface);
      overflow-wrap: anywhere;

      &:has(> .stack-preview-container) {
        padding: var(--sys-size-4) 0;
      }

      &.tool-origin-container {
        display: flex;
        align-items: center;
        gap: var(--sys-size-4);
      }

      .tool-origin-node {
        display: flex;
        align-items: center;
        cursor: default;
      }
    }

    .show-element {
      height: 1lh;
    }
  }

  devtools-list {
    flex: 1 1 auto;
    margin: 0;
    padding: var(--sys-size-4) 0;
    box-sizing: border-box;
  }

  .tool-item {
    display: flex;
    flex-direction: column;
    padding: var(--sys-size-5) var(--sys-size-4);
    gap: var(--sys-size-3);
    width: 100%;
    box-sizing: border-box;
    border-bottom: 1px solid var(--sys-color-divider);

    &:hover {
      background-color: var(--sys-color-state-hover-on-subtle);
    }

    &.selected {
      background-color: var(--sys-color-tonal-container);
    }
  }

  .tool-name-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sys-size-5);

    .tool-icons {
      display: flex;
      gap: var(--sys-size-2);
      align-items: center;
    }
    /* stylelint-disable-next-line selector-type-no-unknown */
    icon-button {
      flex-shrink: 0;
      display: flex;
      align-items: center;
      cursor: pointer;
    }
  }

  .tool-name.source-code {
    color: var(--sys-color-token-property-special);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex: 1;
  }

  .tool-description {
    color: var(--sys-color-on-surface);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  devtools-toolbar-input {
    flex-grow: 1;
    flex-shrink: 1;
  }

  .toolbar-text.status-error-text {
    color: var(--sys-color-error);
  }

  .toolbar-text.status-cancelled-text {
    color: var(--sys-color-on-surface-light);
  }

  .call-details-tabbed-pane {
    flex: auto;
    border-bottom: 1px solid var(--sys-color-divider);
  }

  .call-payload-view {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .call-payload-content {
    padding: var(--sys-size-5);
    flex: auto;
    overflow: auto;
  }

  .payload-value.error-text {
    color: var(--sys-color-error);
    white-space: pre-wrap;
  }

  .sidebar-tool-details {
    flex: none;
    border-bottom: 1px solid var(--sys-color-divider);
  }

  .call-to-action {
    background-color: var(--sys-color-neutral-container);
    padding: 8px;
    border-radius: 5px;
    margin: 4px;
  }

  .call-to-action-body {
    padding: 6px 0;
    margin-left: 9.5px;
    border-left: 2px solid var(--issue-color-yellow);
    padding-left: 18px;
    line-height: 20px;
  }

  .call-to-action .explanation {
    font-weight: bold;
  }

  .inline-icon {
    vertical-align: middle;
  }

  .json-editor-widget {
    flex: auto;
    /* extend the JSON editor padding to match the details grid */
    padding-left: calc(var(--sys-size-8) - 1em);
    min-height: 0;
  }

  .webmcp-run-tool-button {
    align-self: flex-end;
    margin: var(--sys-size-6) var(--sys-size-8);
  }
}