From a2145ad97909438daeaf440bf8124b8bce51909f Mon Sep 17 00:00:00 2001
From: Andrew Nicolaou <me@andrewnicolaou.co.uk>
Date: Mon, 27 Apr 2020 10:12:34 +0200
Subject: [PATCH] Inline button style (with/without icons)

---
 client/common/Button.jsx         | 105 ++++++++++++++++++++++++++++---
 client/common/Button.stories.jsx |   8 +++
 2 files changed, 104 insertions(+), 9 deletions(-)

diff --git a/client/common/Button.jsx b/client/common/Button.jsx
index 16b35c8d..97a960e1 100644
--- a/client/common/Button.jsx
+++ b/client/common/Button.jsx
@@ -6,6 +6,12 @@ import { Link } from 'react-router';
 import { remSize, prop } from '../theme';
 import Icon, { ValidIconNameType } from './Icon';
 
+const kinds = {
+  block: 'block',
+  icon: 'icon',
+  inline: 'inline',
+};
+
 // The '&&&' will increase the specificity of the
 // component's CSS so that it overrides the more
 // general global styles
@@ -41,8 +47,74 @@ const StyledButton = styled.button`
       cursor: not-allowed;
     }
 
-    > *:not(:last-child) {
-      margin-right: ${remSize(8)};
+    > * + * {
+      margin-left: ${remSize(8)};
+    }
+  }
+`;
+
+const StyledInlineButton = styled.button`
+  &&& {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    text-decoration: none;
+
+    color: ${prop('primaryTextColor')};
+    cursor: pointer;
+    border: none;
+    line-height: 1;
+
+    svg * {
+      fill: ${prop('primaryTextColor')};
+    }
+
+    &:disabled {
+      cursor: not-allowed;
+    }
+
+    > * + * {
+      margin-left: ${remSize(8)};
+    }
+  }
+`;
+
+const StyledIconButton = styled.button`
+  &&& {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    width: ${remSize(32)}px;
+    height: ${remSize(32)}px;
+    text-decoration: none;
+
+    background-color: ${prop('buttonColorBackground')};
+    color: ${prop('buttonColor')};
+    cursor: pointer;
+    border: 1px solid transparen;
+    border-radius: 50%;
+    padding: ${remSize(8)} ${remSize(25)};
+    line-height: 1;
+    
+    &:hover:not(:disabled) {
+      color: ${prop('buttonHoverColor')};
+      background-color: ${prop('buttonHoverColorBackground')};
+
+      svg * {
+        fill: ${prop('buttonHoverColor')};
+      }
+    }
+
+    &:disabled {
+      color: ${prop('buttonDisabledColor')};
+      background-color: ${prop('buttonDisabledColorBackground')};
+      cursor: not-allowed;
+    }
+
+    > * + * {
+      margin-left: ${remSize(8)};
     }
   }
 `;
@@ -51,28 +123,39 @@ const StyledButton = styled.button`
  * A Button performs an primary action
  */
 const Button = ({
-  children, href, iconAfterName, iconBeforeName, label, to, type, ...props
+  children, href, iconAfterName, iconBeforeName, kind, label, to, type, ...props
 }) => {
   const iconAfter = iconAfterName && <Icon name={iconAfterName} />;
   const iconBefore = iconBeforeName && <Icon name={iconBeforeName} />;
+  const hasChildren = React.Children.count(children) > 0;
 
-  const content = <>{iconBefore}<span>{children}</span>{iconAfter}</>;
+  const content = <>{iconBefore}{hasChildren && <span>{children}</span>}{iconAfter}</>;
+
+  let StyledComponent = StyledButton;
+
+  if (kind === kinds.inline) {
+    StyledComponent = StyledInlineButton;
+  } else if (kind === kinds.icon) {
+    StyledComponent = StyledIconButton;
+  }
 
   if (href) {
-    return <StyledButton as="a" aria-label={label} href={href} {...props}>{content}</StyledButton>;
+    return <StyledComponent kind={kind} as="a" aria-label={label} href={href} {...props}>{content}</StyledComponent>;
   }
 
   if (to) {
-    return <StyledButton as={Link} aria-label={label} to={to} {...props}>{content}</StyledButton>;
+    return <StyledComponent kind={kind} as={Link} aria-label={label} to={to} {...props}>{content}</StyledComponent>;
   }
 
-  return <StyledButton aria-label={label} type={type} {...props}>{content}</StyledButton>;
+  return <StyledComponent kind={kind} aria-label={label} type={type} {...props}>{content}</StyledComponent>;
 };
 
 Button.defaultProps = {
+  children: null,
   disabled: false,
   iconAfterName: null,
   iconBeforeName: null,
+  kind: kinds.block,
   href: null,
   label: null,
   to: null,
@@ -80,13 +163,14 @@ Button.defaultProps = {
 };
 
 Button.iconNames = Icon.names;
+Button.kinds = kinds;
 
 Button.propTypes = {
   /**
    * The visible part of the button, telling the user what
    * the action is
    */
-  children: PropTypes.element.isRequired,
+  children: PropTypes.element,
   /**
     If the button can be activated or not
   */
@@ -95,11 +179,14 @@ Button.propTypes = {
    * Name of icon to place before child content
    */
   iconAfterName: ValidIconNameType,
-
   /**
    * Name of icon to place after child content
    */
   iconBeforeName: ValidIconNameType,
+  /**
+   * The kind of button - determines how it appears visually
+   */
+  kind: PropTypes.oneOf(Object.values(kinds)),
   /**
    * Specifying an href will use an <a> to link to the URL
    */
diff --git a/client/common/Button.stories.jsx b/client/common/Button.stories.jsx
index 601d7fe9..1af34631 100644
--- a/client/common/Button.stories.jsx
+++ b/client/common/Button.stories.jsx
@@ -42,3 +42,11 @@ export const ButtonWithIconBefore = () => (
 export const ButtonWithIconAfter = () => (
   <Button iconAfterName={Button.iconNames.github}>Create</Button>
 );
+
+export const InlineButtonWithIconAfter = () => (
+  <Button kind={Button.kinds.inline} iconAfterName={Button.iconNames.sortArrowDown}>File name</Button>
+);
+
+export const InlineIconOnlyButton = () => (
+  <Button kind={Button.kinds.inline} iconAfterName={Button.iconNames.plus} label="Add to collection" />
+);