error boundary for screens (#45)

* error boundary for screens

* error boundary for plugins

* remove changes.diff

* move load-error-text class to app.less

* implement mikes suggestions

* apply error boundary to workspace view

* fix minor issues

src/app/app.less

@@ -373,6 +373,15 @@ a.a-block {
     }
 }
 
+.load-error-text {
+    color: @term-red;
+    padding-top: 5px;
+}
+
+.view-error {
+    padding: 10px 20px;
+}
+
 @keyframes loader-ring {
     0% {
         transform: rotate(0deg);

src/app/app.tsx

@@ -24,6 +24,7 @@ import { TosModal } from "./common/modals/modals";
 import { WorkspaceView } from "../app/workspace/workspaceview";
 import { MainSideBar } from "./sidebar/MainSideBar";
 import { DisconnectedModal, ClientStopModal, AlertModal, WelcomeModal } from "./common/modals/modals";
+import { ErrorBoundary } from "./common/error/errorboundary";
 import "./app.less";
 
 dayjs.extend(localizedFormat);
@@ -110,9 +111,11 @@ class App extends React.Component<{}, {}> {
             <div id="main" className={"platform-" + platform} onContextMenu={this.handleContextMenu}>
                 <div className="main-content">
                     <MainSideBar />
-                    <WorkspaceView />
-                    <HistoryView />
-                    <BookmarksView />
+                    <ErrorBoundary>
+                        <WorkspaceView />
+                        <HistoryView />
+                        <BookmarksView />
+                    </ErrorBoundary>
                 </div>
                 <AlertModal />
                 <If condition={GlobalModel.needsTos()}>

src/app/common/error/errorboundary.tsx

@@ -0,0 +1,65 @@
+import React, { Component, ReactNode } from "react";
+import { RendererContext } from "../../../plugins/types/types";
+import cn from "classnames";
+
+interface ErrorBoundaryState {
+    hasError: boolean;
+    error: Error | null;
+}
+
+interface ErrorBoundaryProps {
+    children: ReactNode;
+    plugin?: string;
+    lineContext?: RendererContext;
+}
+
+class ErrorBoundary extends Component<ErrorBoundaryProps, ErrorBoundaryState> {
+    state: ErrorBoundaryState = {
+        hasError: false,
+        error: null,
+    };
+
+    static getDerivedStateFromError(error: Error): ErrorBoundaryState {
+        return { hasError: true, error };
+    }
+
+    componentDidCatch(error: Error, errorInfo: React.ErrorInfo): void {
+        const { plugin, lineContext } = this.props;
+
+        if (plugin && lineContext) {
+            console.log(`Plugin Name: ${plugin}\n`);
+            console.log(`Line Context: \n`);
+            console.log(`${JSON.stringify(lineContext, null, 4)}\n`);
+        }
+
+        console.log(error);
+    }
+
+    resetErrorBoundary = (): void => {
+        this.setState({ hasError: false, error: null });
+    };
+
+    renderFallback() {
+        const { error } = this.state;
+        const { plugin } = this.props;
+
+        return (
+            <div className={cn("load-error-text", { "view-error": !plugin })}>
+                <div>{`${error?.message}`}</div>
+                {plugin && <div>An error occurred in the {plugin} plugin</div>}
+            </div>
+        );
+    }
+
+    render() {
+        const { hasError } = this.state;
+
+        if (hasError) {
+            return this.renderFallback();
+        }
+
+        return this.props.children;
+    }
+}
+
+export { ErrorBoundary };

src/app/line/linecomps.tsx

@@ -38,6 +38,7 @@ import { isBlank } from "../../util/util";
 import { PluginModel } from "../../plugins/plugins";
 import { Prompt } from "../common/prompt/prompt";
 import * as lineutil from "./lineutil";
+import { ErrorBoundary } from "../../app/common/error/errorboundary";
 
 import { ReactComponent as CheckIcon } from "../assets/icons/line/check.svg";
 import { ReactComponent as CommentIcon } from "../assets/icons/line/comment.svg";
@@ -594,7 +595,6 @@ class LineCmd extends React.Component<
         let isRunning = cmd.isRunning();
         let isExpanded = this.isCmdExpanded.get();
         let rsdiff = this.rtnStateDiff.get();
-        // console.log("render", "#" + line.linenum, termHeight, usedRows, cmd.getStatus(), (this.rtnStateDiff.get() != null), (!cmd.isRunning() ? "cmd-done" : "running"));
         let mainDivCn = cn(
             "line",
             "line-cmd",
@@ -664,39 +664,41 @@ class LineCmd extends React.Component<
                     </div>
                 </div>
                 <If condition={!this.isMinimised.get()}>
-                    <If condition={rendererPlugin == null && !isNoneRenderer}>
-                        <TerminalRenderer
-                            screen={screen}
-                            line={line}
-                            width={width}
-                            staticRender={staticRender}
-                            visible={visible}
-                            onHeightChange={this.handleHeightChange}
-                            collapsed={false}
-                        />
-                    </If>
-                    <If condition={rendererPlugin != null && rendererPlugin.rendererType == "simple"}>
-                        <SimpleBlobRenderer
-                            rendererContainer={screen}
-                            lineId={line.lineid}
-                            plugin={rendererPlugin}
-                            onHeightChange={this.handleHeightChange}
-                            initParams={this.makeRendererModelInitializeParams()}
-                            scrollToBringIntoViewport={this.scrollToBringIntoViewport}
-                            isSelected={isSelected}
-                            shouldFocus={shouldCmdFocus}
-                        />
-                    </If>
-                    <If condition={rendererPlugin != null && rendererPlugin.rendererType == "full"}>
-                        <IncrementalRenderer
-                            rendererContainer={screen}
-                            lineId={line.lineid}
-                            plugin={rendererPlugin}
-                            onHeightChange={this.handleHeightChange}
-                            initParams={this.makeRendererModelInitializeParams()}
-                            isSelected={isSelected}
-                        />
-                    </If>
+                    <ErrorBoundary plugin={rendererPlugin?.name} lineContext={lineutil.getRendererContext(line)}>
+                        <If condition={rendererPlugin == null && !isNoneRenderer}>
+                            <TerminalRenderer
+                                screen={screen}
+                                line={line}
+                                width={width}
+                                staticRender={staticRender}
+                                visible={visible}
+                                onHeightChange={this.handleHeightChange}
+                                collapsed={false}
+                            />
+                        </If>
+                        <If condition={rendererPlugin != null && rendererPlugin.rendererType == "simple"}>
+                            <SimpleBlobRenderer
+                                rendererContainer={screen}
+                                lineId={line.lineid}
+                                plugin={rendererPlugin}
+                                onHeightChange={this.handleHeightChange}
+                                initParams={this.makeRendererModelInitializeParams()}
+                                scrollToBringIntoViewport={this.scrollToBringIntoViewport}
+                                isSelected={isSelected}
+                                shouldFocus={shouldCmdFocus}
+                            />
+                        </If>
+                        <If condition={rendererPlugin != null && rendererPlugin.rendererType == "full"}>
+                            <IncrementalRenderer
+                                rendererContainer={screen}
+                                lineId={line.lineid}
+                                plugin={rendererPlugin}
+                                onHeightChange={this.handleHeightChange}
+                                initParams={this.makeRendererModelInitializeParams()}
+                                isSelected={isSelected}
+                            />
+                        </If>
+                    </ErrorBoundary>
                     <If condition={cmd.getRtnState()}>
                         <div
                             key="rtnstate"

src/app/workspace/workspaceview.tsx

@@ -11,6 +11,7 @@ import { GlobalModel } from "../../model/model";
 import { CmdInput } from "./cmdinput/cmdinput";
 import { ScreenView } from "./screen/screenview";
 import { ScreenTabs } from "./screen/tabs";
+import { ErrorBoundary } from "../../app/common/error/errorboundary";
 import "./workspace.less";
 
 dayjs.extend(localizedFormat);
@@ -31,12 +32,15 @@ class WorkspaceView extends React.Component<{}, {}> {
             cmdInputHeight = 110;
         }
         let isHidden = GlobalModel.activeMainView.get() != "session";
+
         return (
             <div className={cn("session-view", { "is-hidden": isHidden })} data-sessionid={session.sessionId}>
                 <ScreenTabs session={session} />
-                <ScreenView screen={activeScreen} />
-                <div style={{ height: cmdInputHeight }}></div>
-                <CmdInput />
+                <ErrorBoundary>
+                    <ScreenView screen={activeScreen} />
+                    <div style={{ height: cmdInputHeight }}></div>
+                    <CmdInput />
+                </ErrorBoundary>
             </div>
         );
     }