feat(toolbox): create SettingsButton

Only on web, since there is currently no equivalent on mobile. It encapsulates
all funcionality related to opening the settings dialog / panel.

react/features/toolbox/components/buttons/web/SettingsButton.js

@@ -0,0 +1,92 @@
+// @flow
+
+import { connect } from 'react-redux';
+
+import { createToolbarEvent, sendAnalytics } from '../../../../analytics';
+import { translate } from '../../../../base/i18n';
+import { openDeviceSelectionDialog } from '../../../../device-selection';
+import { toggleSettings } from '../../../../side-panel';
+
+import AbstractButton from '../AbstractButton';
+import type { Props as AbstractButtonProps } from '../AbstractButton';
+
+declare var interfaceConfig: Object;
+
+type Props = AbstractButtonProps & {
+
+    /**
+     * Whether we are in filmstrip only mode or not.
+     */
+    _filmStripOnly: boolean,
+
+    /**
+     * Array containing the enabled settings sections.
+     */
+    _sections: Array<string>,
+
+    /**
+     * The redux {@code dispatch} function.
+     */
+    dispatch: Function
+}
+
+/**
+ * An abstract implementation of a button for accessing settings.
+ */
+class SettingsButton extends AbstractButton<Props, *> {
+    accessibilityLabel = 'Settings';
+    iconName = 'icon-settings';
+    label = 'toolbar.Settings';
+    tooltip = 'toolbar.Settings';
+
+    /**
+     * Handles clicking / pressing the button, and opens the appropriate dialog.
+     *
+     * @private
+     * @returns {void}
+     */
+    _handleClick() {
+        const { _filmStripOnly, _sections, dispatch } = this.props;
+
+        sendAnalytics(createToolbarEvent('settings'));
+        if (_filmStripOnly
+                || (_sections.length === 1 && _sections.includes('devices'))) {
+            dispatch(openDeviceSelectionDialog());
+        } else {
+            dispatch(toggleSettings());
+        }
+    }
+
+    /**
+     * Indicates whether this button is disabled or not.
+     *
+     * @override
+     * @private
+     * @returns {boolean}
+     */
+    _isDisabled() {
+        return false;
+    }
+}
+
+/**
+ * Maps (parts of) the redux state to the associated props for the
+ * {@code SettingsButton} component.
+ *
+ * @param {Object} state - The Redux state.
+ * @private
+ * @returns {{
+ *     _filmStripOnly: boolean
+ * }}
+ */
+function _mapStateToProps(state): Object { // eslint-disable-line no-unused-vars
+    // XXX: We are not currently using state here, but in the future, when
+    // interfaceConfig is part of redux we will.
+
+    return {
+        _filmStripOnly: Boolean(interfaceConfig.filmStripOnly),
+        _sections: interfaceConfig.SETTINGS_SECTIONS || []
+    };
+}
+
+export default translate(connect(_mapStateToProps)(SettingsButton));

react/features/toolbox/components/buttons/web/index.js

@@ -0,0 +1 @@
+export { default as SettingsButton } from './SettingsButton';