Forms: TextArea component (#20484)

* Adding component, story and documentation file

* forgot files

* Add label and formvalidation

* fix for error/invalid message

* fixing font color when input is disabled

* red border if invalid

* fixing props and label margin

* added support for icon in input

* support for button and loading state

* redoing some of the markup

* fixing height on addons

* Adding some basic documentation

* remove not used types file

* Add some more knobs

* move component to it's own directory, updated styling

* create component and  extract some shared styles

* update story name

* Adding focusstyle and knobs

* Sorting knobs, fix paddings

* accidentaly put in a line break

* use variable names in commonStyles

* add simple mdx docs

* Adding size to TextArea

* more shared styles

* remove unused import

packages/grafana-ui/src/components/Forms/Form.story.tsx

@@ -9,6 +9,7 @@ import { Button } from './Button';
 import { Form } from './Form';
 import { Switch } from './Switch';
 import { Icon } from '../Icon/Icon';
+import { TextArea } from './TextArea/TextArea';
 
 export default {
   title: 'UI/Forms/Test forms/Server admin',
@@ -82,12 +83,7 @@ export const users = () => {
             label="Path to client cert"
             description="Authentication against LDAP servers requiring client certificates if not required leave empty "
           >
-            <Input
-              id="clientCert"
-              value={''}
-              // onChange={e => setPassword(e.currentTarget.value)}
-              size="lg"
-            />
+            <TextArea id="clientCert" value={''} size="lg" />
           </Field>
         </fieldset>
         <Button>Update</Button>

packages/grafana-ui/src/components/Forms/Input/Input.tsx

 import React, { FC, HTMLProps, ReactNode } from 'react';
 import { GrafanaTheme } from '@grafana/data';
 import { css, cx } from 'emotion';
-import { getFocusStyle } from '../commonStyles';
+import { getFocusStyle, inputSizes, sharedInputStyle } from '../commonStyles';
 import { stylesFactory, useTheme } from '../../../themes';
 import { Icon } from '../../Icon/Icon';
 import { useClientRect } from '../../../utils/useClientRect';
-
-export type FormInputSize = 'sm' | 'md' | 'lg' | 'auto';
+import { FormInputSize } from '../types';
 
 export interface Props extends Omit<HTMLProps<HTMLInputElement>, 'prefix' | 'size'> {
   /** Show an invalid state around the input */
@@ -29,7 +28,6 @@ interface StyleDeps {
 
 export const getInputStyles = stylesFactory(({ theme, invalid = false }: StyleDeps) => {
   const colors = theme.colors;
-  const inputBorderColor = invalid ? colors.redBase : colors.formInputBorder;
   const borderRadius = theme.border.radius.sm;
   const height = theme.spacing.formInputHeight;
 
@@ -117,25 +115,18 @@ export const getInputStyles = stylesFactory(({ theme, invalid = false }: StyleDe
 
     input: cx(
       getFocusStyle(theme),
+      sharedInputStyle(theme),
       css`
         label: input-input;
         position: relative;
         z-index: 0;
         flex-grow: 1;
-        color: ${colors.formInputText};
-        background-color: ${colors.formInputBg};
-        border: 1px solid ${inputBorderColor};
         border-radius: ${borderRadius};
         height: 100%;
         width: 100%;
         padding: 0 ${theme.spacing.sm} 0 ${theme.spacing.sm};
         font-size: ${theme.typography.size.md};
 
-        &:disabled {
-          background-color: ${colors.formInputBgDisabled};
-          color: ${colors.formInputDisabledText};
-        }
-
         /*
          Restoring increase/decrease spinner on number inputs. Overwriting rules implemented in
          https://github.com/grafana/grafana/commit/488fe62f158a9e0a0bced2b678ada5d43cf3998e.
@@ -208,20 +199,6 @@ export const getInputStyles = stylesFactory(({ theme, invalid = false }: StyleDe
         right: 0;
       `
     ),
-    inputSize: {
-      sm: css`
-        width: 200px;
-      `,
-      md: css`
-        width: 320px;
-      `,
-      lg: css`
-        width: 580px;
-      `,
-      auto: css`
-        width: 100%;
-      `,
-    },
   };
 });
 
@@ -239,7 +216,7 @@ export const Input: FC<Props> = props => {
   const styles = getInputStyles({ theme, invalid: !!invalid });
 
   return (
-    <div className={cx(styles.wrapper, styles.inputSize[size])}>
+    <div className={cx(styles.wrapper, inputSizes()[size])}>
       {!!addonBefore && <div className={styles.addon}>{addonBefore}</div>}
 
       <div className={styles.inputWrapper}>

packages/grafana-ui/src/components/Forms/TextArea/TextArea.mdx

+import { Props } from '@storybook/addon-docs/blocks';
+import { TextArea } from './TextArea';
+
+# TextArea
+Use for multi line inputs like descriptions.
+
+<Props of={TextArea} />

packages/grafana-ui/src/components/Forms/TextArea/TextArea.story.tsx

+import React from 'react';
+import { TextArea } from './TextArea';
+import { withCenteredStory } from '../../../utils/storybook/withCenteredStory';
+import { boolean, number, select, text } from '@storybook/addon-knobs';
+import mdx from './TextArea.mdx';
+
+export default {
+  title: 'UI/Forms/TextArea',
+  component: TextArea,
+  decorators: [withCenteredStory],
+  parameters: {
+    docs: {
+      page: mdx,
+    },
+  },
+};
+
+export const simple = () => {
+  const BEHAVIOUR_GROUP = 'Behaviour props';
+  // ---
+  const invalid = boolean('Invalid', false, BEHAVIOUR_GROUP);
+  const disabled = boolean('Disabled', false, BEHAVIOUR_GROUP);
+
+  const VISUAL_GROUP = 'Visual options';
+  // ---
+  const placeholder = text('Placeholder', 'This is just a placeholder', VISUAL_GROUP);
+  const cols = number('Cols', 30, { range: true, min: 5, max: 50, step: 5 }, VISUAL_GROUP);
+  const size = select('Size', ['sm', 'md', 'lg', 'auto'], undefined, VISUAL_GROUP);
+
+  const CONTAINER_GROUP = 'Container options';
+  // ---
+  const containerWidth = number(
+    'Container width',
+    300,
+    {
+      range: true,
+      min: 100,
+      max: 500,
+      step: 10,
+    },
+    CONTAINER_GROUP
+  );
+
+  return (
+    <div style={{ width: containerWidth }}>
+      <TextArea invalid={invalid} placeholder={placeholder} cols={cols} disabled={disabled} size={size} />
+    </div>
+  );
+};

packages/grafana-ui/src/components/Forms/TextArea/TextArea.tsx

+import React, { FC, HTMLProps } from 'react';
+import { GrafanaTheme } from '@grafana/data';
+import { css, cx } from 'emotion';
+import { stylesFactory, useTheme } from '../../../themes';
+import { getFocusStyle, inputSizes, sharedInputStyle } from '../commonStyles';
+import { FormInputSize } from '../types';
+
+export interface Props extends Omit<HTMLProps<HTMLTextAreaElement>, 'size'> {
+  /** Show an invalid state around the input */
+  invalid?: boolean;
+  /** Choose a predefined size */
+  size?: FormInputSize;
+}
+
+const getTextAreaStyle = stylesFactory((theme: GrafanaTheme, invalid = false) => {
+  return {
+    textarea: cx(
+      sharedInputStyle(theme),
+      getFocusStyle(theme),
+      css`
+        border-radius: ${theme.border.radius.sm};
+        padding: ${theme.spacing.formSpacingBase / 4}px ${theme.spacing.formSpacingBase}px;
+        width: 100%;
+      `
+    ),
+  };
+});
+
+export const TextArea: FC<Props> = ({ invalid, size = 'auto', ...props }) => {
+  const theme = useTheme();
+  const styles = getTextAreaStyle(theme, invalid);
+
+  return (
+    <div className={inputSizes()[size]}>
+      <textarea className={styles.textarea} {...props} />
+    </div>
+  );
+};

packages/grafana-ui/src/components/Forms/commonStyles.ts

@@ -9,3 +9,46 @@ export const getFocusStyle = (theme: GrafanaTheme) => css`
     transition: all 0.2s cubic-bezier(0.19, 1, 0.22, 1);
   }
 `;
+
+export const sharedInputStyle = (theme: GrafanaTheme, invalid = false) => {
+  const colors = theme.colors;
+  const borderColor = invalid ? colors.redBase : colors.formInputBorder;
+
+  return css`
+    background-color: ${colors.formInputBg};
+    line-height: ${theme.typography.lineHeight.lg};
+    font-size: ${theme.typography.size.md};
+    color: ${colors.formInputText};
+    border: 1px solid ${borderColor};
+
+    &:hover {
+      border-color: ${colors.formInputBorder};
+    }
+
+    &:focus {
+      outline: none;
+    }
+
+    &:disabled {
+      background-color: ${colors.formInputBgDisabled};
+      color: ${colors.formInputDisabledText};
+    }
+  `;
+};
+
+export const inputSizes = () => {
+  return {
+    sm: css`
+      width: 200px;
+    `,
+    md: css`
+      width: 320px;
+    `,
+    lg: css`
+      width: 580px;
+    `,
+    auto: css`
+      width: 100%;
+    `,
+  };
+};

packages/grafana-ui/src/components/Forms/types.ts

+export type FormInputSize = 'sm' | 'md' | 'lg' | 'auto';