Docs: Updated documentation for the element.

import-panel.html

@@ -28,7 +28,13 @@
 <link rel="import" href="import-data-inspector.html">
 
 <!--
-`<import-panel>` The import data view for ARC
+The data import view for ARC.
+
+Generates the UI and support logic for importing data from a file, Google Drive,
+and copy / paste action.
+
+It requires the `arc-data-import` element to be present in the DOM to handle
+`import-data` and `import-normalize` events.
 
 ### Example
 ```
@@ -41,6 +47,21 @@
 Custom property | Description | Default
 ----------------|-------------|----------
 `--import-panel` | Mixin applied to the element | `{}`
+`--action-button` | MIxin applied to main action buttons | `{}`
+`--error-toast` | Mixin applied to a toast with error message | `{}`
+`--warning-primary-color` | Background color of error toast | `#FF7043`
+`--warning-contrast-color`| Color of error toast | `#fff`
+`--import-panel-card` | Mixin applied to a paper card like element | `{}`
+`--import-data-inspector` | Mixin applied to the element | `{}`
+`--action-button` | Mixin applied to the primary acction button | `{}`
+`--import-data-inspector-meta-color` | Color of the meta data property | `{}`
+`--import-table` | Mixin applied to a table with data import | `{}`
+`--import-table-opened` | Mixin applied to a table with data import when opened | `{}`
+`--import-table-title` | Mixin applied to the title of the import table | `{}`
+`--import-table-header` | Mixin applied to data table header with selecyion options | `{}`
+`--import-table-method-label` | Mixin applied to the HTTP method label container | `{}`
+`--import-table-selection-counter` | Mixin applied to a table selection counter label | `{}`
+`--import-table-list-item` | Mixin applied to data table's items | `{}`
 
 @group UI Elements
 @element import-panel
@@ -91,6 +112,7 @@
     .card {
       @apply --shadow-elevation-2dp;
       padding: 24px;
+      @apply --import-panel-card;
     }
 
     iron-pages,