Move call buttons to the room header

This is to make some room in the composer for voice messages. The hangup behaviour is intentionally lost by this change as the VOIP UX is intended to rely on dedicated hangup buttons instead.

src/components/views/rooms/RoomHeader.js

@@ -31,6 +31,7 @@ import {DefaultTagID} from "../../../stores/room-list/models";
 import AccessibleTooltipButton from "../elements/AccessibleTooltipButton";
 import RoomTopic from "../elements/RoomTopic";
 import RoomName from "../elements/RoomName";
+import {PlaceCallType} from "../../../CallHandler";
 
 export default class RoomHeader extends React.Component {
     static propTypes = {
@@ -45,6 +46,7 @@ export default class RoomHeader extends React.Component {
         e2eStatus: PropTypes.string,
         onAppsClick: PropTypes.func,
         appsShown: PropTypes.bool,
+        onCallPlaced: PropTypes.func, // (PlaceCallType) => void;
     };
 
     static defaultProps = {
@@ -226,8 +228,26 @@ export default class RoomHeader extends React.Component {
                     title={_t("Search")} />;
         }
 
+        let voiceCallButton;
+        let videoCallButton;
+        if (this.props.inRoom && SettingsStore.getValue("showCallButtonsInComposer")) {
+            voiceCallButton =
+                <AccessibleTooltipButton
+                    className="mx_RoomHeader_button mx_RoomHeader_voiceCallButton"
+                    onClick={() => this.props.onCallPlaced(PlaceCallType.Voice)}
+                    title={_t("Voice call")} />;
+            videoCallButton =
+                <AccessibleTooltipButton
+                    className="mx_RoomHeader_button mx_RoomHeader_videoCallButton"
+                    onClick={(ev) => this.props.onCallPlaced(
+                        ev.shiftKey ? PlaceCallType.ScreenSharing : PlaceCallType.Video)}
+                    title={_t("Video call")} />;
+        }
+
         const rightRow =
             <div className="mx_RoomHeader_buttons">
+                { videoCallButton }
+                { voiceCallButton }
                 { pinnedEventsButton }
                 { forgetButton }
                 { appsButton }