FieldConfig: implement color picker (#24833)

packages/grafana-data/src/field/overrides/processors.ts

@@ -109,5 +109,7 @@ export const booleanOverrideProcessor = (
 };
 
 export interface ColorFieldConfigSettings {
-  enableNamedColors?: boolean;
+  allowUndefined?: boolean;
+  textWhenUndefined?: string; // Pick Color
+  disableNamedColors?: boolean;
 }

packages/grafana-ui/src/components/OptionsUI/color.tsx

 import React from 'react';
-import { FieldConfigEditorProps, ColorFieldConfigSettings } from '@grafana/data';
-/* import { ColorPicker } from '../ColorPicker/ColorPicker'; */
+import {
+  FieldConfigEditorProps,
+  ColorFieldConfigSettings,
+  GrafanaTheme,
+  getColorFromHexRgbOrName,
+} from '@grafana/data';
+import { ColorPicker } from '../ColorPicker/ColorPicker';
+import { getTheme, stylesFactory } from '../../themes';
+import { Icon } from '../Icon/Icon';
+import { css } from 'emotion';
+import { ColorPickerTrigger } from '../ColorPicker/ColorPickerTrigger';
 
 export const ColorValueEditor: React.FC<FieldConfigEditorProps<string, ColorFieldConfigSettings>> = ({
   value,
   onChange,
   item,
 }) => {
-  return <div>todo</div>;
+  const { settings } = item;
+  const theme = getTheme();
+  const styles = getStyles(theme);
+
+  const color = value || (item.defaultValue as string) || theme.colors.panelBg;
+
+  return (
+    <ColorPicker color={color} onChange={onChange} enableNamedColors={!settings.disableNamedColors}>
+      {({ ref, showColorPicker, hideColorPicker }) => {
+        return (
+          <div className={styles.spot} onBlur={hideColorPicker}>
+            <div className={styles.colorPicker}>
+              <ColorPickerTrigger
+                ref={ref}
+                onClick={showColorPicker}
+                onMouseLeave={hideColorPicker}
+                color={getColorFromHexRgbOrName(color, theme.type)}
+              />
+            </div>
+            <div className={styles.colorText} onClick={showColorPicker}>
+              {value ?? settings.textWhenUndefined ?? 'Pick Color'}
+            </div>
+            {value && settings.allowUndefined && (
+              <Icon className={styles.trashIcon} name="trash-alt" onClick={() => onChange(undefined)} />
+            )}
+          </div>
+        );
+      }}
+    </ColorPicker>
+  );
 };
+
+const getStyles = stylesFactory((theme: GrafanaTheme) => {
+  return {
+    spot: css`
+      color: ${theme.colors.text};
+      background: ${theme.colors.formInputBg};
+      padding: 3px;
+      border: 1px solid ${theme.colors.formInputBorder};
+      display: flex;
+      flex-direction: row;
+      align-items: center;
+      &:hover {
+        border: 1px solid ${theme.colors.formInputBorderHover};
+      }
+    `,
+    colorPicker: css`
+      padding: 0 ${theme.spacing.sm};
+    `,
+    colorText: css`
+      cursor: pointer;
+      flex-grow: 1;
+    `,
+    trashIcon: css`
+      cursor: pointer;
+      color: ${theme.colors.textWeak};
+      &:hover {
+        color: ${theme.colors.text};
+      }
+    `,
+  };
+});