Merge branch 'main' into sawka/layout

* Fix sidebar middle div max-height calculation

* remove logs

* update bottom div padding

go.work.sum

@@ -1,3 +1,4 @@
+github.com/aws/aws-sdk-go-v2/service/s3 v1.27.11 h1:3/gm/JTX9bX8CpzTgIlrtYpB3EVBDxyg/GY/QdcIEZw=
 github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
 github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
 github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=

src/app/app.less

@@ -8,6 +8,10 @@
 }
 
 :root {
+    /* updated by GlobalModel to user's preferred fontsize */
+    --termfontsize: 12px;
+    --termlineheight: 15px;
+
     --fa-style-family: "Font Awesome 6 Sharp";
 }
 

src/app/appconst.ts

@@ -18,7 +18,8 @@ export const ConfirmKey_HideShellPrompt = "hideshellprompt";
 
 export const NoStrPos = -1;
 
-export const RemotePtyRows = 8; // also in main.tsx
+export const RemotePtyRows = 8;
+export const RemotePtyTotalRows = 25;
 export const RemotePtyCols = 80;
 export const ProdServerEndpoint = "http://127.0.0.1:1619";
 export const ProdServerWsEndpoint = "ws://127.0.0.1:1623";

src/app/common/modals/viewremoteconndetail.tsx

@@ -370,7 +370,11 @@ class ViewRemoteConnDetailModal extends React.Component<{}, {}> {
                                 ref={this.termRef}
                                 data-remoteid={remote.remoteid}
                                 style={{
-                                    height: textmeasure.termHeightFromRows(appconst.RemotePtyRows, termFontSize),
+                                    height: textmeasure.termHeightFromRows(
+                                        appconst.RemotePtyRows,
+                                        termFontSize,
+                                        appconst.RemotePtyTotalRows
+                                    ),
                                     width: termWidth,
                                 }}
                             ></div>

src/app/line/linecomps.tsx

@@ -388,7 +388,7 @@ class LineCmd extends React.Component<
         let height = 45 + 24; // height of zero height terminal
         const usedRows = screen.getUsedRows(lineutil.getRendererContext(line), line, cmd, width);
         if (usedRows > 0) {
-            height = 48 + 24 + termHeightFromRows(usedRows, GlobalModel.termFontSize.get());
+            height = 48 + 24 + termHeightFromRows(usedRows, GlobalModel.termFontSize.get(), cmd.getTermMaxRows());
         }
         return height;
     }
@@ -753,32 +753,6 @@ class LineCmd extends React.Component<
                             />
                         </If>
                     </ErrorBoundary>
-                    <If condition={cmd.getRtnState()}>
-                        <div
-                            key="rtnstate"
-                            className="cmd-rtnstate"
-                            style={{
-                                visibility: cmd.getStatus() == "done" ? "visible" : "hidden",
-                            }}
-                        >
-                            <If condition={rsdiff == null || rsdiff == ""}>
-                                <div className="cmd-rtnstate-label">state unchanged</div>
-                                <div className="cmd-rtnstate-sep"></div>
-                            </If>
-                            <If condition={rsdiff != null && rsdiff != ""}>
-                                <div className="cmd-rtnstate-label">new state</div>
-                                <div className="cmd-rtnstate-sep"></div>
-                                <div className="cmd-rtnstate-diff" style={{ fontSize: rtnStateDiffSize }}>
-                                    <div className="cmd-rtnstate-diff-inner">{this.rtnStateDiff.get()}</div>
-                                </div>
-                            </If>
-                        </div>
-                    </If>
-                    <If condition={isSelected && !isFocused && rendererType == "terminal"}>
-                        <div className="cmd-hints">
-                            <div className="hint-item color-nohover-white">focus line ({renderCmdText("L")})</div>
-                        </div>
-                    </If>
                 </If>
             </div>
         );

src/app/line/lines.less

@@ -23,18 +23,9 @@
 
 .line.line-cmd {
     flex-direction: column;
-    scroll-margin-bottom: 20px;
+    scroll-margin-bottom: var(--termlineheight);
     position: relative;
 
-    .plus {
-        opacity: 0.5;
-    }
-    &:hover {
-        .plus {
-            opacity: 1;
-        }
-    }
-
     .sidebar-message {
         color: @term-yellow;
     }
@@ -45,13 +36,14 @@
         padding-bottom: 0.7rem;
         width: 100%;
         line-height: 1.2;
+        height: calc(var(--termlineheight) * 2);
 
         &.is-expanded {
             height: auto;
         }
 
         &.hide-prompt {
-            height: 32px;
+            height: calc(var(--termlineheight) * 2);
         }
 
         .line-icon {
@@ -81,12 +73,15 @@
             display: block;
             opacity: 1;
         }
-    }
 
-    .meta.meta-line1 {
-        margin-left: 2px;
-        color: rgba(@base-color, 0.6) !important;
-        font-size: 11px;
+        .meta.meta-line1 {
+            color: rgba(@base-color, 0.6) !important;
+            font-size: var(--termfontsize);
+        }
+
+        .meta.meta-line2 {
+            margin-left: -2px;
+        }
     }
 
     &.has-rtnstate .terminal-wrapper {
@@ -113,11 +108,6 @@
             overflow-x: hidden;
         }
 
-        .terminal {
-            margin-right: 8px;
-            padding: 0.25rem;
-        }
-
         &.cmd-done .terminal .xterm-cursor {
             display: none;
         }
@@ -208,7 +198,6 @@
 
         .simple-line-header {
             display: flex;
-            margin-top: 5px;
             flex-direction: row;
         }
 
@@ -350,14 +339,9 @@
         display: flex;
         flex-direction: row;
 
-        .simple-line-status {
-            margin-top: 5px;
-        }
-
         .user {
             color: lighten(@soft-blue, 10%);
             font-weight: bold;
-            margin-top: 1px;
             margin-right: 10px;
         }
 
@@ -365,12 +349,10 @@
         .termopts,
         .renderer {
             display: flex;
-            margin-top: 5px;
         }
 
         .renderer {
             margin-left: 3px;
-            margin-top: 5px;
             svg {
                 width: 1em;
                 margin-right: 0.5em;
@@ -381,7 +363,6 @@
         .settings {
             display: none;
             margin-left: 0.5em;
-            margin-top: 0.65em;
             cursor: pointer;
             width: 1em;
             height: 1em;
@@ -396,7 +377,6 @@
         }
 
         .termopts {
-            margin-top: 5px;
             display: none;
             .resize-button {
                 cursor: pointer;
@@ -407,7 +387,6 @@
 
         .metapart-mono {
             margin-left: 8px;
-            margin-top: 4px;
             white-space: nowrap;
         }
 
@@ -466,6 +445,7 @@
     padding: 0 0 10px 0;
     flex-grow: 1;
     position: relative;
+    overflow-x: hidden;
 
     &::-webkit-scrollbar-thumb {
         background-color: transparent !important;
@@ -482,10 +462,6 @@
         }
     }
 
-    .line:nth-child(2) {
-        padding-top: 1px;
-    }
-
     .lines-spacer {
         flex-grow: 1;
     }
@@ -493,7 +469,8 @@
     .line-sep {
         display: flex;
         align-items: center;
-        margin-top: 1em;
+        height: var(--termlineheight);
+        font-size: var(--termfontsize);
         color: rgba(@base-color, 0.5);
     }
 

src/app/magiclayout.ts

@@ -18,8 +18,6 @@ let MagicLayout = {
     ScreenMinContentSize: 100,
     ScreenMaxContentSize: 5000,
 
-    // the 3 is for descenders, which get cut off in the terminal without this
-    TermDescendersHeight: 3,
     TermWidthBuffer: 15,
 
     TabWidth: 154,

src/app/sidebar/sidebar.less

@@ -119,7 +119,6 @@
     }
 
     .middle {
-        max-height: calc(100vh - 32em);
         padding: 4px 6px 8px 6px;
         border-bottom: 1px solid @base-border;
         .item {
@@ -142,9 +141,10 @@
 
     .bottom {
         position: absolute;
-        bottom: 2em;
+        bottom: 2rem;
         left: 0;
         width: 100%;
+        padding-top: 0.8rem;
     }
 
     .item {

src/app/sidebar/sidebar.tsx

@@ -64,7 +64,7 @@ interface MainSideBarProps {
 
 @mobxReact.observer
 class MainSideBar extends React.Component<MainSideBarProps, {}> {
-    sidebarRef = React.createRef<HTMLDivElement>();
+    middleHeightSubtractor = mobx.observable.box(404);
 
     handleSessionClick(sessionId: string) {
         GlobalCommandRunner.switchSession(sessionId);
@@ -203,14 +203,37 @@ class MainSideBar extends React.Component<MainSideBarProps, {}> {
         });
     }
 
+    /**
+     * Calculate the subtractor portion for the middle div's height calculation, which should be `100vh - subtractor`.
+     */
+    setMiddleHeightSubtractor() {
+        const windowHeight = window.innerHeight;
+        const bottomHeight = windowHeight - window.document.getElementById("sidebar-bottom")?.offsetTop;
+        const middleTop = document.getElementById("sidebar-middle")?.offsetTop;
+        const newMiddleHeightSubtractor = bottomHeight + middleTop;
+        if (!Number.isNaN(newMiddleHeightSubtractor)) {
+            mobx.action(() => {
+                this.middleHeightSubtractor.set(newMiddleHeightSubtractor);
+            })();
+        }
+    }
+
+    componentDidMount() {
+        this.setMiddleHeightSubtractor();
+    }
+
+    componentDidUpdate() {
+        this.setMiddleHeightSubtractor();
+    }
+
     render() {
-        let clientData = this.props.clientData;
+        const clientData = this.props.clientData;
         let needsUpdate = false;
         if (!clientData?.clientopts.noreleasecheck && !isBlank(clientData?.releaseinfo?.latestversion)) {
             needsUpdate = compareLoose(appconst.VERSION, clientData.releaseinfo.latestversion) < 0;
         }
-        let mainSidebar = GlobalModel.mainSidebarModel;
-        let isCollapsed = mainSidebar.getCollapsed();
+        const mainSidebar = GlobalModel.mainSidebarModel;
+        const isCollapsed = mainSidebar.getCollapsed();
         return (
             <ResizableSidebar
                 className="main-sidebar"
@@ -271,8 +294,16 @@ class MainSideBar extends React.Component<MainSideBarProps, {}> {
                                     </CenteredIcon>,
                                 ]}
                             />
-                            <div className="middle hideScrollbarUntillHover">{this.getSessions()}</div>
-                            <div className="bottom">
+                            <div
+                                className="middle hideScrollbarUntillHover"
+                                id="sidebar-middle"
+                                style={{
+                                    maxHeight: `calc(100vh - ${this.middleHeightSubtractor.get()}px)`,
+                                }}
+                            >
+                                {this.getSessions()}
+                            </div>
+                            <div className="bottom" id="sidebar-bottom">
                                 <If condition={needsUpdate}>
                                     <SideBarItem
                                         key="update-available"

src/app/workspace/cmdinput/aichat.tsx

@@ -5,7 +5,7 @@ import * as React from "react";
 import * as mobxReact from "mobx-react";
 import * as mobx from "mobx";
 import { GlobalModel } from "@/models";
-import { isBlank } from "@/util";
+import { isBlank } from "@/util/util";
 import { boundMethod } from "autobind-decorator";
 import cn from "classnames";
 import { For } from "tsx-control-statements/components";
@@ -92,7 +92,7 @@ class AIChat extends React.Component<{}, {}> {
             if (checkKeyPressed(waveEvent, "Escape")) {
                 e.preventDefault();
                 e.stopPropagation();
-                inputModel.closeAIAssistantChat();
+                inputModel.closeAIAssistantChat(true);
             }
 
             if (checkKeyPressed(waveEvent, "Ctrl:l")) {

src/app/workspace/cmdinput/textareainput.tsx

@@ -232,7 +232,7 @@ class TextAreaInput extends React.Component<{ screen: Screen; onHeightChange: ()
                 if (inputModel.inputMode.get() != null) {
                     inputModel.resetInputMode();
                 }
-                inputModel.closeAIAssistantChat();
+                inputModel.closeAIAssistantChat(true);
                 return;
             }
             if (checkKeyPressed(waveEvent, "Cmd:e")) {

src/app/workspace/screen/screenview.tsx

@@ -109,6 +109,7 @@ class ScreenView extends React.Component<{ session: Session; screen: Screen }, {
             return <div className="screen-view" ref={this.screenViewRef}></div>;
         }
         let fontSize = GlobalModel.termFontSize.get();
+        let dprStr = sprintf("%0.3f", GlobalModel.devicePixelRatio.get());
         let viewOpts = screen.viewOpts.get();
         let hasSidebar = viewOpts?.sidebar?.open;
         let winWidth = "100%";
@@ -145,7 +146,7 @@ class ScreenView extends React.Component<{ session: Session; screen: Screen }, {
         return (
             <div className="screen-view" data-screenid={screen.screenId} ref={this.screenViewRef}>
                 <ScreenWindowView
-                    key={screen.screenId + ":" + fontSize}
+                    key={screen.screenId + ":" + fontSize + ":" + dprStr}
                     session={session}
                     screen={screen}
                     width={winWidth}

src/electron/emain.ts

@@ -177,6 +177,7 @@ function readAuthKey() {
     return authKeyStr.trim();
 }
 const reloadAcceleratorKey = unamePlatform == "darwin" ? "Option+R" : "Super+R";
+let cmdOrAlt = process.platform === "darwin" ? "Cmd" : "Alt";
 let menuTemplate: Electron.MenuItemConstructorOptions[] = [
     {
         role: "appMenu",
@@ -205,9 +206,41 @@ let menuTemplate: Electron.MenuItemConstructorOptions[] = [
             { role: "reload", accelerator: reloadAcceleratorKey },
             { role: "toggleDevTools" },
             { type: "separator" },
-            { role: "resetZoom" },
-            { role: "zoomIn" },
-            { role: "zoomOut" },
+            {
+                label: "Actual Size",
+                accelerator: cmdOrAlt + "+0",
+                click: () => {
+                    if (MainWindow == null) {
+                        return;
+                    }
+                    MainWindow.webContents.setZoomFactor(1);
+                    MainWindow.webContents.send("zoom-changed");
+                },
+            },
+            {
+                label: "Zoom In",
+                accelerator: cmdOrAlt + "+Plus",
+                click: () => {
+                    if (MainWindow == null) {
+                        return;
+                    }
+                    const zoomFactor = MainWindow.webContents.getZoomFactor();
+                    MainWindow.webContents.setZoomFactor(zoomFactor * 1.1);
+                    MainWindow.webContents.send("zoom-changed");
+                },
+            },
+            {
+                label: "Zoom Out",
+                accelerator: cmdOrAlt + "+-",
+                click: () => {
+                    if (MainWindow == null) {
+                        return;
+                    }
+                    const zoomFactor = MainWindow.webContents.getZoomFactor();
+                    MainWindow.webContents.setZoomFactor(zoomFactor / 1.1);
+                    MainWindow.webContents.send("zoom-changed");
+                },
+            },
             { type: "separator" },
             { role: "togglefullscreen" },
         ],
@@ -375,6 +408,9 @@ function createMainWindow(clientData: ClientDataType | null) {
     win.on("close", () => {
         MainWindow = null;
     });
+    win.webContents.on("zoom-changed", (e) => {
+        win.webContents.send("zoom-changed");
+    });
     win.webContents.setWindowOpenHandler(({ url, frameName }) => {
         if (url.startsWith("https://docs.waveterm.dev/")) {
             console.log("openExternal docs", url);

src/electron/preload.js

@@ -21,6 +21,7 @@ contextBridge.exposeInMainWorld("api", {
     onWCmd: (callback) => ipcRenderer.on("w-cmd", callback),
     onPCmd: (callback) => ipcRenderer.on("p-cmd", callback),
     onRCmd: (callback) => ipcRenderer.on("r-cmd", callback),
+    onZoomChanged: (callback) => ipcRenderer.on("zoom-changed", callback),
     onMetaArrowUp: (callback) => ipcRenderer.on("meta-arrowup", callback),
     onMetaArrowDown: (callback) => ipcRenderer.on("meta-arrowdown", callback),
     onMetaPageUp: (callback) => ipcRenderer.on("meta-pageup", callback),

src/index.ts

@@ -8,6 +8,7 @@ import { sprintf } from "sprintf-js";
 import { App } from "@/app/app";
 import * as DOMPurify from "dompurify";
 import { loadFonts } from "./util/util";
+import * as textmeasure from "./util/textmeasure";
 
 // @ts-ignore
 let VERSION = __WAVETERM_VERSION__;
@@ -20,18 +21,14 @@ document.addEventListener("DOMContentLoaded", () => {
     let reactElem = React.createElement(App, null, null);
     let elem = document.getElementById("app");
     let root = createRoot(elem);
-    let isFontLoaded = document.fonts.check("12px 'JetBrains Mono'");
-    if (isFontLoaded) {
+    document.fonts.ready.then(() => {
         root.render(reactElem);
-    } else {
-        document.fonts.ready.then(() => {
-            root.render(reactElem);
-        });
-    }
+    });
 });
 
 (window as any).mobx = mobx;
 (window as any).sprintf = sprintf;
 (window as any).DOMPurify = DOMPurify;
+(window as any).textmeasure = textmeasure;
 
 console.log("WaveTerm", VERSION, BUILD);

src/models/cmd.ts

@@ -88,6 +88,11 @@ class Cmd {
         return this.data.get().termopts;
     }
 
+    getTermMaxRows(): number {
+        let termOpts = this.getTermOpts();
+        return termOpts?.rows;
+    }
+
     getCmdStr(): string {
         return this.data.get().cmdstr;
     }

src/models/historyview.ts

@@ -115,7 +115,7 @@ class HistoryViewModel {
             } else {
                 this.activeItem.set(hitem.historyid);
                 let width = termWidthFromCols(80, this.globalModel.termFontSize.get());
-                let height = termHeightFromRows(25, this.globalModel.termFontSize.get());
+                let height = termHeightFromRows(25, this.globalModel.termFontSize.get(), 25);
                 this.specialLineContainer = new SpecialLineContainer(
                     this,
                     { width, height },
@@ -149,7 +149,7 @@ class HistoryViewModel {
     }
 
     _deleteSelected(): void {
-        let lineIds = Array.from(this.selectedItems.keys());
+        let lineIds: string[] = Array.from(this.selectedItems.keys());
         let prtn = GlobalCommandRunner.historyPurgeLines(lineIds);
         prtn.then((result: CommandRtnType) => {
             if (!result.success) {

src/models/input.ts

@@ -618,10 +618,17 @@ class InputModel {
         })();
     }
 
-    closeAIAssistantChat(): void {
+    // pass true to give focus to the input (e.g. if this is an 'active' close of the chat)
+    // when resetting the input (when switching screens, don't give focus)
+    closeAIAssistantChat(giveFocus: boolean): void {
+        if (!this.aIChatShow.get()) {
+            return;
+        }
         mobx.action(() => {
             this.aIChatShow.set(false);
-            this.giveFocus();
+            if (giveFocus) {
+                this.giveFocus();
+            }
         })();
     }
 
@@ -723,7 +730,7 @@ class InputModel {
     resetInput(): void {
         mobx.action(() => {
             this.setHistoryShow(false);
-            this.closeAIAssistantChat();
+            this.closeAIAssistantChat(false);
             this.infoShow.set(false);
             this.inputMode.set(null);
             this.resetHistory();

src/models/model.ts

@@ -32,13 +32,8 @@ import { MainSidebarModel } from "./mainsidebar";
 import { Screen } from "./screen";
 import { Cmd } from "./cmd";
 import { GlobalCommandRunner } from "./global";
-
-type KeyModsType = {
-    meta?: boolean;
-    ctrl?: boolean;
-    alt?: boolean;
-    shift?: boolean;
-};
+import { clearMonoFontCache } from "@/util/textmeasure";
+import type { TermWrap } from "@/plugins/terminal/term";
 
 type SWLinePtr = {
     line: LineType;
@@ -46,36 +41,6 @@ type SWLinePtr = {
     screen: Screen;
 };
 
-type ElectronApi = {
-    getId: () => string;
-    getIsDev: () => boolean;
-    getPlatform: () => string;
-    getAuthKey: () => string;
-    getWaveSrvStatus: () => boolean;
-    restartWaveSrv: () => boolean;
-    reloadWindow: () => void;
-    openExternalLink: (url: string) => void;
-    reregisterGlobalShortcut: (shortcut: string) => void;
-    onTCmd: (callback: (mods: KeyModsType) => void) => void;
-    onICmd: (callback: (mods: KeyModsType) => void) => void;
-    onLCmd: (callback: (mods: KeyModsType) => void) => void;
-    onHCmd: (callback: (mods: KeyModsType) => void) => void;
-    onPCmd: (callback: (mods: KeyModsType) => void) => void;
-    onRCmd: (callback: (mods: KeyModsType) => void) => void;
-    onWCmd: (callback: (mods: KeyModsType) => void) => void;
-    onMenuItemAbout: (callback: () => void) => void;
-    onMetaArrowUp: (callback: () => void) => void;
-    onMetaArrowDown: (callback: () => void) => void;
-    onMetaPageUp: (callback: () => void) => void;
-    onMetaPageDown: (callback: () => void) => void;
-    onBracketCmd: (callback: (event: any, arg: { relative: number }, mods: KeyModsType) => void) => void;
-    onDigitCmd: (callback: (event: any, arg: { digit: number }, mods: KeyModsType) => void) => void;
-    contextScreen: (screenOpts: { screenId: string }, position: { x: number; y: number }) => void;
-    contextEditMenu: (position: { x: number; y: number }, opts: ContextMenuOpts) => void;
-    onWaveSrvStatusChange: (callback: (status: boolean, pid: number) => void) => void;
-    getLastLogs: (numOfLines: number, callback: (logs: any) => void) => void;
-};
-
 function getApi(): ElectronApi {
     return (window as any).api;
 }
@@ -133,7 +98,10 @@ class Model {
     });
     lineSettingsModal: OV<number> = mobx.observable.box(null, {
         name: "lineSettingsModal",
-    }); // linenum
+    });
+    devicePixelRatio: OV<number> = mobx.observable.box(window.devicePixelRatio, {
+        name: "devicePixelRatio",
+    });
     remotesModel: RemotesModel;
 
     inputModel: InputModel;
@@ -189,6 +157,10 @@ class Model {
             }
             return fontSize;
         });
+        mobx.autorun(() => {
+            const fontSize = this.termFontSize.get();
+            this._setCssTermFontSize(fontSize);
+        });
         getApi().onTCmd(this.onTCmd.bind(this));
         getApi().onICmd(this.onICmd.bind(this));
         getApi().onLCmd(this.onLCmd.bind(this));
@@ -196,6 +168,7 @@ class Model {
         getApi().onPCmd(this.onPCmd.bind(this));
         getApi().onWCmd(this.onWCmd.bind(this));
         getApi().onRCmd(this.onRCmd.bind(this));
+        getApi().onZoomChanged(this.onZoomChanged.bind(this));
         getApi().onMenuItemAbout(this.onMenuItemAbout.bind(this));
         getApi().onMetaArrowUp(this.onMetaArrowUp.bind(this));
         getApi().onMetaArrowDown(this.onMetaArrowDown.bind(this));
@@ -345,16 +318,10 @@ class Model {
         return appconst.ProdServerEndpoint;
     }
 
-    setTermFontSize(fontSize: number) {
-        if (fontSize < appconst.MinFontSize) {
-            fontSize = appconst.MinFontSize;
-        }
-        if (fontSize > appconst.MaxFontSize) {
-            fontSize = appconst.MaxFontSize;
-        }
-        mobx.action(() => {
-            this.termFontSize.set(fontSize);
-        })();
+    _setCssTermFontSize(fontSize: number) {
+        const root = document.documentElement;
+        root.style.setProperty("--termfontsize", fontSize + "px");
+        root.style.setProperty("--termlinehight", Math.ceil(fontSize * 1.2) + "px");
     }
 
     getBaseWsHostPort(): string {
@@ -514,6 +481,30 @@ class Model {
         }
     }
 
+    onZoomChanged(): void {
+        mobx.action(() => {
+            this.devicePixelRatio.set(window.devicePixelRatio);
+            clearMonoFontCache();
+        })();
+    }
+
+    // for debuggin
+    getSelectedTermWrap(): TermWrap {
+        let screen = this.getActiveScreen();
+        if (screen == null) {
+            return null;
+        }
+        let lineNum = screen.selectedLine.get();
+        if (lineNum == null) {
+            return null;
+        }
+        let line = screen.getLineByNum(lineNum);
+        if (line == null) {
+            return null;
+        }
+        return screen.getTermWrap(line.lineid);
+    }
+
     clearModals(): boolean {
         let didSomething = false;
         mobx.action(() => {