Send with selection (#82)

* Rename addMessage to sendMessage in the chat model, for concistency

* Add the selection watcher object, and modify the send button to allow adding selection

* Add the selection watcher to the collaborative chat (work only with the side panel widget)

* Add a selection watcher to the websocket chat

* Automatic application of license header

* Change the state of include button on signal

* Hide the 'include selection' menu when editing a message or if the tools are not available

* Invert the logic to hide the 'include selection' menu

* Adopt the same button style for the cancel button

* Automatic application of license header

* Handle the selected text if the chat is a main area widget

* Add the ability to replace the current selection on visible editor

* Fixes ui-tests

* lint

* Fix the selection watcher for a new notebook file

* Add tests

* update snapshots

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

docs/source/developers/developing_extensions/extension-providing-chat.md

@@ -43,7 +43,7 @@ A model is provided by the package, and already includes all the required method
 interact with the UI part of the chat.
 
 The extension has to provide a class extending the `@jupyter/chat` model, implementing
-at least the `addMessage()` method.
+at least the `sendMessage()` method.
 
 This method is called when a user sends a message using the input of the chat. It should
 contain the code that will dispatch the message through the messaging technology.
@@ -55,7 +55,7 @@ the message list.
 import { ChatModel, IChatMessage, INewMessage } from '@jupyter/chat';
 
 class MyModel extends ChatModel {
-  addMessage(
+  sendMessage(
     newMessage: INewMessage
   ): Promise<boolean | void> | boolean | void {
     console.log(`New Message:\n${newMessage.body}`);
@@ -88,7 +88,7 @@ When a user sends a message, it is logged in the console and added to the messag
 ```{tip}
 In this example, no messages are sent to other potential users.
 
-An exchange system must be included and use the `addMessage()` and `messageAdded()`
+An exchange system must be included and use the `sendMessage()` and `messageAdded()`
 methods to correctly manage message transmission and reception.
 ```
 
@@ -107,7 +107,7 @@ import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
 import { UUID } from '@lumino/coreutils';
 
 class MyModel extends ChatModel {
-  addMessage(
+  sendMessage(
     newMessage: INewMessage
   ): Promise<boolean | void> | boolean | void {
     console.log(`New Message:\n${newMessage.body}`);

packages/jupyter-chat/package.json

@@ -57,6 +57,7 @@
     "@jupyter/react-components": "^0.15.2",
     "@jupyterlab/application": "^4.2.0",
     "@jupyterlab/apputils": "^4.3.0",
+    "@jupyterlab/fileeditor": "^4.2.0",
     "@jupyterlab/notebook": "^4.2.0",
     "@jupyterlab/rendermime": "^4.2.0",
     "@jupyterlab/ui-components": "^4.2.0",

packages/jupyter-chat/src/active-cell-manager.ts

@@ -25,6 +25,9 @@ type CellWithErrorContent = {
   };
 };
 
+/**
+ * The active cell interface.
+ */
 export interface IActiveCellManager {
   /**
    * Whether the notebook is available and an active cell exists.

packages/jupyter-chat/src/components/chat-input.tsx

@@ -8,25 +8,25 @@ import React, { useEffect, useRef, useState } from 'react';
 import {
   Autocomplete,
   Box,
-  IconButton,
   InputAdornment,
   SxProps,
   TextField,
   Theme
 } from '@mui/material';
-import { Send, Cancel } from '@mui/icons-material';
 import clsx from 'clsx';
+
+import { CancelButton } from './input/cancel-button';
+import { SendButton } from './input/send-button';
 import { IChatModel } from '../model';
 import { IAutocompletionRegistry } from '../registry';
 import {
   AutocompleteCommand,
   IAutocompletionCommandsProps,
-  IConfig
+  IConfig,
+  Selection
 } from '../types';
 
 const INPUT_BOX_CLASS = 'jp-chat-input-container';
-const SEND_BUTTON_CLASS = 'jp-chat-send-button';
-const CANCEL_BUTTON_CLASS = 'jp-chat-cancel-button';
 
 export function ChatInput(props: ChatInput.IProps): JSX.Element {
   const { autocompletionName, autocompletionRegistry, model } = props;
@@ -36,6 +36,13 @@ export function ChatInput(props: ChatInput.IProps): JSX.Element {
     model.config.sendWithShiftEnter ?? false
   );
 
+  // Display the include selection menu if it is not explicitly hidden, and if at least
+  // one of the tool to check for text or cell selection is enabled.
+  let hideIncludeSelection = props.hideIncludeSelection ?? false;
+  if (model.activeCellManager === null && model.selectionWatcher === null) {
+    hideIncludeSelection = true;
+  }
+
   // store reference to the input element to enable focusing it easily
   const inputRef = useRef<HTMLInputElement>();
 
@@ -138,10 +145,21 @@ export function ChatInput(props: ChatInput.IProps): JSX.Element {
 
   /**
    * Triggered when sending the message.
+   *
+   * Add code block if cell or text is selected.
    */
-  function onSend() {
+  function onSend(selection?: Selection) {
+    let content = input;
+    if (selection) {
+      content += `
+
+\`\`\`
+${selection.source}
+\`\`\`
+`;
+    }
+    props.onSend(content);
     setInput('');
-    props.onSend(input);
   }
 
   /**
@@ -203,30 +221,19 @@ export function ChatInput(props: ChatInput.IProps): JSX.Element {
               endAdornment: (
                 <InputAdornment position="end">
                   {props.onCancel && (
-                    <IconButton
-                      size="small"
-                      color="primary"
-                      onClick={onCancel}
-                      title={'Cancel edition'}
-                      className={clsx(CANCEL_BUTTON_CLASS)}
-                    >
-                      <Cancel />
-                    </IconButton>
+                    <CancelButton
+                      inputExists={input.length > 0}
+                      onCancel={onCancel}
+                    />
                   )}
-                  <IconButton
-                    size="small"
-                    color="primary"
-                    onClick={onSend}
-                    disabled={
-                      props.onCancel
-                        ? input === props.value
-                        : !input.trim().length
-                    }
-                    title={`Send message ${sendWithShiftEnter ? '(SHIFT+ENTER)' : '(ENTER)'}`}
-                    className={clsx(SEND_BUTTON_CLASS)}
-                  >
-                    <Send />
-                  </IconButton>
+                  <SendButton
+                    model={model}
+                    sendWithShiftEnter={sendWithShiftEnter}
+                    inputExists={input.length > 0}
+                    onSend={onSend}
+                    hideIncludeSelection={hideIncludeSelection}
+                    hasButtonOnLeft={!!props.onCancel}
+                  />
                 </InputAdornment>
               )
             }}
@@ -294,6 +301,10 @@ export namespace ChatInput {
      * The function to be called to cancel editing.
      */
     onCancel?: () => unknown;
+    /**
+     * Whether to allow or not including selection.
+     */
+    hideIncludeSelection?: boolean;
     /**
      * Custom mui/material styles.
      */

packages/jupyter-chat/src/components/chat-messages.tsx

@@ -393,6 +393,7 @@ export function ChatMessage(props: ChatMessageProps): JSX.Element {
           onSend={(input: string) => updateMessage(message.id, input)}
           onCancel={() => cancelEdition()}
           model={model}
+          hideIncludeSelection={true}
         />
       ) : (
         <RendermimeMarkdown

packages/jupyter-chat/src/components/chat.tsx

@@ -27,7 +27,7 @@ export function ChatBody(props: Chat.IChatBodyProps): JSX.Element {
   // handled by the listeners registered in the effect hooks above.
   const onSend = async (input: string) => {
     // send message to backend
-    model.addMessage({ body: input });
+    model.sendMessage({ body: input });
   };
 
   return (

packages/jupyter-chat/src/components/code-blocks/code-toolbar.tsx

@@ -12,6 +12,7 @@ import { TooltippedIconButton } from '../mui-extras/tooltipped-icon-button';
 import { IActiveCellManager } from '../../active-cell-manager';
 import { replaceCellIcon } from '../../icons';
 import { IChatModel } from '../../model';
+import { ISelectionWatcher } from '../../selection-watcher';
 
 const CODE_TOOLBAR_CLASS = 'jp-chat-code-toolbar';
 const CODE_TOOLBAR_ITEM_CLASS = 'jp-chat-code-toolbar-item';
@@ -34,25 +35,41 @@ export function CodeToolbar(props: CodeToolbarProps): JSX.Element {
   );
 
   const activeCellManager = model.activeCellManager;
+  const selectionWatcher = model.selectionWatcher;
 
   const [toolbarBtnProps, setToolbarBtnProps] = useState<ToolbarButtonProps>({
-    content: content,
-    activeCellManager: activeCellManager,
-    activeCellAvailable: activeCellManager?.available ?? false
+    content,
+    activeCellManager,
+    selectionWatcher,
+    activeCellAvailable: !!activeCellManager?.available,
+    selectionExists: !!selectionWatcher?.selection
   });
 
   useEffect(() => {
-    activeCellManager?.availabilityChanged.connect(() => {
+    const toggleToolbar = () => {
+      setToolbarEnable(model.config.enableCodeToolbar ?? true);
+    };
+
+    const selectionStatusChange = () => {
       setToolbarBtnProps({
         content,
-        activeCellManager: activeCellManager,
-        activeCellAvailable: activeCellManager.available
+        activeCellManager,
+        selectionWatcher,
+        activeCellAvailable: !!activeCellManager?.available,
+        selectionExists: !!selectionWatcher?.selection
       });
-    });
-
-    model.configChanged.connect((_, config) => {
-      setToolbarEnable(config.enableCodeToolbar ?? true);
-    });
+    };
+
+    activeCellManager?.availabilityChanged.connect(selectionStatusChange);
+    selectionWatcher?.selectionChanged.connect(selectionStatusChange);
+    model.configChanged.connect(toggleToolbar);
+
+    selectionStatusChange();
+    return () => {
+      activeCellManager?.availabilityChanged.disconnect(selectionStatusChange);
+      selectionWatcher?.selectionChanged.disconnect(selectionStatusChange);
+      model.configChanged.disconnect(toggleToolbar);
+    };
   }, [model]);
 
   return activeCellManager === null || !toolbarEnable ? (
@@ -86,8 +103,10 @@ export function CodeToolbar(props: CodeToolbarProps): JSX.Element {
 
 type ToolbarButtonProps = {
   content: string;
-  activeCellAvailable?: boolean;
   activeCellManager: IActiveCellManager | null;
+  activeCellAvailable?: boolean;
+  selectionWatcher: ISelectionWatcher | null;
+  selectionExists?: boolean;
   className?: string;
 };
 
@@ -126,16 +145,35 @@ function InsertBelowButton(props: ToolbarButtonProps) {
 }
 
 function ReplaceButton(props: ToolbarButtonProps) {
-  const tooltip = props.activeCellAvailable
-    ? 'Replace active cell'
-    : 'Replace active cell (no active cell)';
+  const tooltip = props.selectionExists
+    ? `Replace selection (${props.selectionWatcher?.selection?.numLines} line(s))`
+    : props.activeCellAvailable
+      ? 'Replace selection (active cell)'
+      : 'Replace selection (no selection)';
+
+  const disabled = !props.activeCellAvailable && !props.selectionExists;
+
+  const replace = () => {
+    if (props.selectionExists) {
+      const selection = props.selectionWatcher?.selection;
+      if (!selection) {
+        return;
+      }
+      props.selectionWatcher?.replaceSelection({
+        ...selection,
+        text: props.content
+      });
+    } else if (props.activeCellAvailable) {
+      props.activeCellManager?.replace(props.content);
+    }
+  };
 
   return (
     <TooltippedIconButton
       className={props.className}
       tooltip={tooltip}
-      disabled={!props.activeCellAvailable}
-      onClick={() => props.activeCellManager?.replace(props.content)}
+      disabled={disabled}
+      onClick={replace}
     >
       <replaceCellIcon.react height="16px" width="16px" />
     </TooltippedIconButton>

packages/jupyter-chat/src/components/input/cancel-button.tsx

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) Jupyter Development Team.
+ * Distributed under the terms of the Modified BSD License.
+ */
+
+import CancelIcon from '@mui/icons-material/Cancel';
+import React from 'react';
+import { TooltippedButton } from '../mui-extras/tooltipped-button';
+
+const CANCEL_BUTTON_CLASS = 'jp-chat-cancel-button';
+
+/**
+ * The cancel button props.
+ */
+export type CancelButtonProps = {
+  inputExists: boolean;
+  onCancel: () => void;
+};
+
+/**
+ * The cancel button.
+ */
+export function CancelButton(props: CancelButtonProps): JSX.Element {
+  const tooltip = 'Cancel edition';
+  const disabled = !props.inputExists;
+  return (
+    <TooltippedButton
+      onClick={props.onCancel}
+      disabled={disabled}
+      tooltip={tooltip}
+      buttonProps={{
+        size: 'small',
+        variant: 'contained',
+        title: tooltip,
+        className: CANCEL_BUTTON_CLASS
+      }}
+      sx={{
+        minWidth: 'unset',
+        padding: '4px',
+        borderRadius: '2px 0px 0px 2px',
+        marginRight: '1px'
+      }}
+    >
+      <CancelIcon />
+    </TooltippedButton>
+  );
+}