Compose buttons bar redesign + generalize dropdown (#194)

* Generalize compose dropdown for re-use

* wip stuffs

* new tootbox look and removed old doodle button files

* use the house icon for ...

app/javascript/glitch/components/compose/dropdown/index.js

@@ -0,0 +1,77 @@
+//  Package imports  //
+import React from 'react';
+import PropTypes from 'prop-types';
+
+//  Mastodon imports  //
+import IconButton from '../../../../mastodon/components/icon_button';
+
+const iconStyle = {
+  height     : null,
+  lineHeight : '27px',
+};
+
+export default class ComposeDropdown extends React.PureComponent {
+
+  static propTypes = {
+    title: PropTypes.string.isRequired,
+    icon: PropTypes.string,
+    highlight: PropTypes.bool,
+    disabled: PropTypes.bool,
+    children: PropTypes.arrayOf(PropTypes.node).isRequired,
+  };
+
+  state = {
+    open: false,
+  };
+
+  onGlobalClick = (e) => {
+    if (e.target !== this.node && !this.node.contains(e.target) && this.state.open) {
+      this.setState({ open: false });
+    }
+  };
+
+  componentDidMount () {
+    window.addEventListener('click', this.onGlobalClick);
+    window.addEventListener('touchstart', this.onGlobalClick);
+  }
+  componentWillUnmount () {
+    window.removeEventListener('click', this.onGlobalClick);
+    window.removeEventListener('touchstart', this.onGlobalClick);
+  }
+
+  onToggleDropdown = () => {
+    if (this.props.disabled) return;
+    this.setState({ open: !this.state.open });
+  };
+
+  setRef = (c) => {
+    this.node = c;
+  };
+
+  render () {
+    const { open } = this.state;
+    let { highlight, title, icon, disabled } = this.props;
+
+    if (!icon) icon = 'ellipsis-h';
+
+    return (
+      <div ref={this.setRef} className={`advanced-options-dropdown ${open ?  'open' : ''} ${highlight ? 'active' : ''} `}>
+        <div className='advanced-options-dropdown__value'>
+          <IconButton
+            className={'inverted'}
+            title={title}
+            icon={icon} active={open || highlight}
+            size={18}
+            style={iconStyle}
+            disabled={disabled}
+            onClick={this.onToggleDropdown}
+          />
+        </div>
+        <div className='advanced-options-dropdown__dropdown'>
+          {this.props.children}
+        </div>
+      </div>
+    );
+  }
+
+}