[RN] Add button to toggle raised hand

react/features/toolbox/components/native/OverflowMenu.js

@@ -18,6 +18,7 @@ import { ClosedCaptionButton } from '../../../subtitles';
 import { TileViewButton } from '../../../video-layout';
 
 import AudioOnlyButton from './AudioOnlyButton';
+import RaiseHandButton from './RaiseHandButton';
 import ToggleCameraButton from './ToggleCameraButton';
 
 declare var __DEV__;
@@ -95,6 +96,7 @@ class OverflowMenu extends Component<Props> {
                 <LiveStreamButton { ...buttonProps } />
                 <TileViewButton { ...buttonProps } />
                 <InviteButton { ...buttonProps } />
+                <RaiseHandButton { ...buttonProps } />
             </BottomSheet>
         );
     }

react/features/toolbox/components/native/RaiseHandButton.js

@@ -0,0 +1,113 @@
+// @flow
+
+import { type Dispatch } from 'redux';
+
+import {
+    createToolbarEvent,
+    sendAnalytics
+} from '../../../analytics';
+import { translate } from '../../../base/i18n';
+import {
+    getLocalParticipant,
+    participantUpdated
+} from '../../../base/participants';
+import { connect } from '../../../base/redux';
+import { AbstractButton } from '../../../base/toolbox';
+import type { AbstractButtonProps } from '../../../base/toolbox';
+
+/**
+ * The type of the React {@code Component} props of {@link RaiseHandButton}.
+ */
+type Props = AbstractButtonProps & {
+
+    /**
+     * The local participant.
+     */
+    _localParticipant: Object,
+
+    /**
+     * Whether the participant raused their hand or not.
+     */
+    _raisedHand: boolean,
+
+    /**
+     * The redux {@code dispatch} function.
+     */
+    dispatch: Dispatch<any>
+};
+
+/**
+ * An implementation of a button to raise or lower hand.
+ */
+class RaiseHandButton extends AbstractButton<Props, *> {
+    accessibilityLabel = 'toolbar.accessibilityLabel.raiseHand';
+    iconName = 'raised-hand';
+    label = 'toolbar.raiseYourHand';
+    toggledIconName = 'raised-hand';
+    toggledLabel = 'toolbar.lowerYourHand';
+
+    /**
+     * Handles clicking / pressing the button.
+     *
+     * @override
+     * @protected
+     * @returns {void}
+     */
+    _handleClick() {
+        this._toggleRaisedHand();
+    }
+
+    /**
+     * Indicates whether this button is in toggled state or not.
+     *
+     * @override
+     * @protected
+     * @returns {boolean}
+     */
+    _isToggled() {
+        return this.props._raisedHand;
+    }
+
+    /**
+     * Toggles the rased hand status of the local participant.
+     *
+     * @returns {void}
+     */
+    _toggleRaisedHand() {
+        const enable = !this.props._raisedHand;
+
+        sendAnalytics(createToolbarEvent('raise.hand', { enable }));
+
+        this.props.dispatch(participantUpdated({
+            // XXX Only the local participant is allowed to update without
+            // stating the JitsiConference instance (i.e. participant property
+            // `conference` for a remote participant) because the local
+            // participant is uniquely identified by the very fact that there is
+            // only one local participant.
+
+            id: this.props._localParticipant.id,
+            local: true,
+            raisedHand: enable
+        }));
+    }
+}
+
+/**
+ * Maps part of the Redux state to the props of this component.
+ *
+ * @param {Object} state - The Redux state.
+ * @private
+ * @returns {{
+ *     _raisedHand: boolean
+ * }}
+ */
+function _mapStateToProps(state): Object {
+    const _localParticipant = getLocalParticipant(state);
+
+    return {
+        _localParticipant,
+        _raisedHand: _localParticipant.raisedHand
+    };
+}
+
+export default translate(connect(_mapStateToProps)(RaiseHandButton));