What is React Ace Editor?

React Ace Editor is a React component that integrates the Ace code editor into React applications. It allows developers to add features such as syntax highlighting, themes, code editing, and editor event handling without building an editor from scratch.

How do you install Ace Editor in a React application?

You can install the React Ace Editor package using npm and then import AceEditor along with the required language mode and theme from ace-builds. After that, the component can be added to a React component and configured through its available properties.

Can React Ace Editor support different programming languages?

Yes. Ace Editor uses modes to handle different programming languages. These modes provide language-specific syntax highlighting and can be imported from ace-builds based on the languages your application needs.

Can the React Ace Editor be customized?

Yes. You can customize settings such as font size, theme, line numbers, tab size, active line highlighting, autocomplete, snippets, and read-only behavior. These options allow the editor to fit the requirements of different React applications.

Can you track events such as copy, paste, focus, and blur?

Yes. React Ace Editor provides event handlers that can respond to actions such as copying, pasting, focusing, losing focus, and changing the editor content. These handlers can be used when the application needs to run additional logic based on user interaction.

Master Ace Editor Integration in React Applications

TL;DR

React Ace Editor brings Ace Editor’s code editing capabilities into React applications. It supports syntax highlighting, themes, autocomplete, editor events, custom settings, and different ways to manage code content. Keeping the editor configuration focused and managing its state properly can make it easier to integrate, maintain, and use as the application grows.

Key takeaways

1 Enhanced Code Editing: React Ace Editor is used for enhancing the interactive code editor in the React app and come with better features like syntax highlight, auto suggestion, and theme support for code writing and editing.
2 Seamless Integration: Being designed for React, the editor follows the properties’ configuration approach, as well as the events like Focus, Blur, Copy, and Paste, to provide unique customization for the user.
3 Optimized for Performance: React Ace Editor is adaptable for managing large code clients and essential sessions which excellent for small scale and large scale projects and improvises productiveness and coding standard.
4 Flexible Configuration: The editor can be configured for different languages, themes, editor settings, and application requirements without changing the overall implementation.
5 Reusable Component: React Ace Editor can be reused across different parts of a React application, making it easier to maintain consistent editor settings and behavior.

Among website development and mobile application development, A code editor can increase the code editing efficiency and the working conduct, finally leading to program structure perfection, workflow optimization and development satisfaction. This React Ace Editor really allows the users to see the world of code writing in the environment that they are familiar with, which makes it a great choice for inserting the code editor in one’s React applications. This blog will cover the features, advantages and proper way for adding and using React Ace Editor in your projects including what makes the component so efficient, code syntax highlighting, customization, integration and performance optimization.

Instruction : Render Ace Editor from react side.

The React Ace editor is a component that brings together the functionalities of the Ace syntax editor to make their use in a React application development easier. This tool develops the point of a strong, convenient and product platform code editor to manually deal with multiple code types and the variety of languages.

Now let’s install React Ace Editor in your React app.

Make sure first that development environment with React running and then only integrate it to the project. Create the app from the react application by typing the command create-react-app application name. Make sure that you have Node.js and npm configured on your local device so that you can continue with the React Ace installation and setup.

Installing with npm

To start using Ace Editor , you can use npm, i.e. a package manager on the Node.js platform. Run this following command:

Basic usage and configuration options for Ace Editor

Once installed and set up properly, you can start using it by importing the Ace Editor component into your React application. Here’s a basic usage import example:

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

Function ReactAceEditor() {

&nbsp;&nbsp;function onChange(newValue) {

&nbsp;&nbsp;&nbsp;&nbsp;console.log('change', newValue);

&nbsp;&nbsp;}

&nbsp;&nbsp;return (

&nbsp;&nbsp;&nbsp;&nbsp;&lt;AceEditor

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mode="javascript"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;onChange={onChange}

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;name="UNIQUE_ID_OF_DIV"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;editorProps={{ $blockScrolling: true }}

&nbsp;&nbsp;&nbsp;&nbsp;/&gt;

&nbsp;&nbsp;);

}

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

Function ReactAceEditor() {

  function onChange(newValue) {

    console.log('change', newValue);

  }

  return (

    <AceEditor

      mode="javascript"

      theme="github"

      onChange={onChange}

      name="UNIQUE_ID_OF_DIV"

      editorProps={{ $blockScrolling: true }}

  );

}

export default ReactAceEditor;

Customizing React Ace Editor

It allows you to configure various properties to tailor the editor. You can set options such as font size, read-only mode, etc. Here’s an example of setting some common properties:

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function MyEditorComponent() {

&nbsp;&nbsp;function onChange(newValue) {

&nbsp;&nbsp;&nbsp;&nbsp;console.log('change', newValue);

&nbsp;&nbsp;}

&nbsp;&nbsp;return (

&nbsp;&nbsp;&nbsp;&nbsp;&lt;AceEditor

&nbsp;&nbsp;&nbsp;&nbsp;mode="javascript"

&nbsp;&nbsp;&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;&nbsp;&nbsp;onChange={onChange}

&nbsp;&nbsp;&nbsp;&nbsp;name="UNIQUE_ID_OF_DIV"

&nbsp;&nbsp;&nbsp;&nbsp;editorProps={{ $blockScrolling: true }}

&nbsp;&nbsp;&nbsp;&nbsp;fontSize={14}

&nbsp;&nbsp;&nbsp;&nbsp;showPrintMargin={true}

&nbsp;&nbsp;&nbsp;&nbsp;showGutter={true}

&nbsp;&nbsp;&nbsp;&nbsp;highlightActiveLine={true}

&nbsp;&nbsp;&nbsp;&nbsp;setOptions={{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;enableBasicAutocompletion: false,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;enableLiveAutocompletion: false,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;enableSnippets: false,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;showLineNumbers: true,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;tabSize: 2,

&nbsp;&nbsp;&nbsp;&nbsp;}}

&nbsp;&nbsp;/&gt;

&nbsp;&nbsp;);

}

export default MyEditorComponent;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function MyEditorComponent() {

  function onChange(newValue) {

    console.log('change', newValue);

  }

  return (

    <AceEditor

    mode="javascript"

    theme="github"

    onChange={onChange}

    name="UNIQUE_ID_OF_DIV"

    editorProps={{ $blockScrolling: true }}

    fontSize={14}

    showPrintMargin={true}

    showGutter={true}

    highlightActiveLine={true}

    setOptions={{

      enableBasicAutocompletion: false,

      enableLiveAutocompletion: false,

      enableSnippets: false,

      showLineNumbers: true,

      tabSize: 2,

    }}

  );

}

export default MyEditorComponent;

Examining customization options for outlook, themes, and highlighting syntax.

Ace Editor handles different programming languages appropriately by provision of modes. The modes provide different languages related syntax highlighting and a set of features like code completion, auto-indentation, and error highlighting. You can import the mode by using the import x from ace-builds as shown in the basic usage example. Also, the same thing that Ace Editor provides is a number of themes for customizing the appearance of the editor so you can use them as custom themes, theme switching, and theme integration. Themes can be imported from ace-builds for a more visual appearance and editing experience.
Here’s an example of setting the mode to HTML and the theme to GitHub:


import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

&nbsp;&nbsp;return (

&nbsp;&nbsp;&nbsp;&nbsp;&lt;AceEditor

&nbsp;&nbsp;&nbsp;&nbsp;mode="html"

&nbsp;&nbsp;&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;&nbsp;&nbsp;// ... other props

&nbsp;&nbsp;/&gt;

&nbsp;&nbsp;);

}

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

  return (

    <AceEditor

    mode="html"

    theme="github"

    // ... other props

  );

}

export default ReactAceEditor;

Implementing custom key bindings and Handling Editor Events: Focus, Blur and Transformation

It supplies one event handler to respond to a user’s interaction with the editor. Handlers available with them can get the functionalities to execute when the content is changed, editor is focused, or loses the focus.

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

&nbsp;&nbsp;return (

&lt;AceEditor

&nbsp;&nbsp;mode="javascript"

&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;onChange={onChange}

&nbsp;&nbsp;onFocus={handleFocus}

&nbsp;&nbsp;onBlur={handleBlur}

/&gt;

&nbsp;&nbsp;);

}

function handleFocus(event, editor) {

&nbsp;&nbsp;&nbsp;&nbsp;console.log('Editor is focused');

&nbsp;&nbsp;}

&nbsp;&nbsp;function handleBlur(event, editor) {

&nbsp;&nbsp;&nbsp;&nbsp;console.log('Editor has lost focus');

&nbsp;&nbsp;}

&nbsp;&nbsp;function onChange(newValue) {

&nbsp;&nbsp;&nbsp;&nbsp;console.log('Content changed to:', newValue);

&nbsp;&nbsp;}

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

  return (

<AceEditor

  mode="javascript"

  theme="github"

  onChange={onChange}

  onFocus={handleFocus}

  onBlur={handleBlur}

  );

}

function handleFocus(event, editor) {

    console.log('Editor is focused');

  }

  function handleBlur(event, editor) {

    console.log('Editor has lost focus');

  }

  function onChange(newValue) {

    console.log('Content changed to:', newValue);

  }

export default ReactAceEditor;

Ace Editor is a powerful tool with some inner functionality and techniques.

Instant Completion, Snippets and Syntax Checking

It offers complex support like autocompletion, code snippets, syntax highlighting and checking to improve the UX of the React Development application. These components are quite helpful if you are an employee of a big organization. These features may be activated by using the necessary extensions or setting the corresponding options of the Ace Editor component.

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

&nbsp;&nbsp;return (

&lt;AceEditor

&nbsp;&nbsp;mode="javascript"

&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;setOptions={{

&nbsp;&nbsp;&nbsp;&nbsp;enableBasicAutocompletion: true,

&nbsp;&nbsp;&nbsp;&nbsp;enableLiveAutocompletion: true,

&nbsp;&nbsp;&nbsp;&nbsp;enableSnippets: true

&nbsp;&nbsp;}}

/&gt;

&nbsp;&nbsp;);

}

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

  return (

<AceEditor

  mode="javascript"

  theme="github"

  setOptions={{

    enableBasicAutocompletion: true,

    enableLiveAutocompletion: true,

    enableSnippets: true

  }}

  );

}

export default ReactAceEditor;

The Sessions and Documents editor is a part of working with the tool.

Editor sessions in Ace Editor allow you to have multiple document instances in a single editor. You are able to work with many sessions concurrently, and even switch between the sessions to edit multiple files without worrying about the state.

Handling large codebases and optimizing performance.

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

&nbsp;&nbsp;return (

&lt;AceEditor

&nbsp;&nbsp;mode="javascript"

&nbsp;&nbsp;theme="github"

&nbsp;&nbsp;onCopy={handleCopyEvent}

&nbsp;&nbsp;onPaste={handlePasteEvent}

/&gt;

&nbsp;&nbsp;);

}

function handleSessionChange(newSession) {

&nbsp;&nbsp;}

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

  return (

<AceEditor

  mode="javascript"

  theme="github"

  onCopy={handleCopyEvent}

  onPaste={handlePasteEvent}

  );

}

function handleSessionChange(newSession) {

  }

export default ReactAceEditor;

Lets Go Ahead and Incorporate Implementation of Editor, Copy, Cut, and Paste Events In Ace Editor

Ace Editor enables you with some very helpful tools, enables you to use copy, cut, and paste events within the editor and provides you with keyboard shortcuts which could be useful for your own work. Besides, you can add your own custom logic for these actions by the most appropriate way of event handlers.

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

  return (

&lt;AceEditor

  mode="javascript"

  theme="github"

  onCopy={handleCopyEvent}

  onPaste={handlePasteEvent}

/>

  );

}

function handleCopyEvent(text) {

    console.log('Copied text:', text);

    // Additional logic for the copy event

  }

  function handlePasteEvent(text) {

    console.log('Pasted text:', text); // Additional logic for the paste 

  }

export default ReactAceEditor;

import React from 'react';

import AceEditor from 'react-ace';

import 'ace-builds/src-noconflict/mode-javascript';

import 'ace-builds/src-noconflict/theme-github';

function ReactAceEditor() {

return (

<AceEditor

mode="javascript"

theme="github"

onCopy={handleCopyEvent}

onPaste={handlePasteEvent}

);

}

function handleCopyEvent(text) {

console.log('Copied text:', text);

// Additional logic for the copy event

}

function handlePasteEvent(text) {

console.log('Pasted text:', text); // Additional logic for the paste

}

export default ReactAceEditor;

Managing Editor State in React Ace Editor

When the editor is part of a larger React application, managing its value becomes important. Instead of letting the editor hold everything on its own, you can keep the current code in React state and update it whenever the content changes. This makes it easier to use the editor content somewhere else in the application.

For example, the code entered in the editor may need to be sent to an API, saved to a database, or displayed in another part of the interface. Keeping the value in state gives the application more control over what happens to that content.

import React, { useState } from 'react';
import AceEditor from 'react-ace';

function CodeEditor() {
  const &#91;code, setCode] = useState('');

  return (
    &lt;AceEditor
      mode="javascript"
      theme="github"
      value={code}
      onChange={(value) =&gt; setCode(value)}
      name="react-ace-editor"
      width="100%"
    /&gt;
  );
}

export default CodeEditor;

import React, { useState } from 'react';

import AceEditor from 'react-ace';

function CodeEditor() {

const [code, setCode] = useState('');

return (

<AceEditor

mode="javascript"

theme="github"

value={code}

onChange={(value) => setCode(value)}

name="react-ace-editor"

width="100%"

);

}

export default CodeEditor;

This approach also makes it easier to reset the editor, load saved code, or pass the current value to another component. For applications where the editor is used as part of a form or coding workflow, controlled state can make the overall implementation easier to manage.

Using Read-Only Mode

Not every editor needs to allow users to change the code. In some applications, Ace Editor may be used to display configuration files, generated code, API responses, or examples. In these cases, read-only mode can prevent accidental changes while still allowing users to view and copy the content.

The readOnly property can be used for this purpose.

&lt;AceEditor
  mode="javascript"
  theme="github"
  value={code}
  readOnly={true}
  name="readonly-editor"
/&gt;

<AceEditor

mode="javascript"

theme="github"

value={code}

readOnly={true}

name="readonly-editor"

This is useful when the editor is being used more like a code viewer than a full editing environment. It also keeps the interface simple when editing is not part of the user’s task.

Keeping the Editor Responsive

Performance seems to be more critical when the user works with large files or when the editor is rendered with other complex components. Only the necessary modes and themes should be imported and used to reduce the bundle size.

It is vital to avoid unnecessary updates of the component. If the parent component is not optimized, it can trigger excessive re-rendering of the editor. Hence, it is essential to ensure that the editor component keeps all the irrelevant information as a state.

Also, when working with larger applications, it is recommended to use the reduced version of the editor and add the required features (autocomplete, snippets, and other modes). It can help reduce the size of the bundle and exclude unnecessary features.

Saving and Loading Code

A typical use case of React Ace Editor is editing code and returning to it in the future. The editor itself is responsible for the editing experience, while React is used to save and load the content.

In a small app, it can be saved in state or browser storage. In a real application, it would be sent to the server and attached to the current project/user.

Meanwhile, the value property can be used to load the previously saved code back into the ACE editor. This way, it can be used for coding tools, configuration files editors, internal developer tools, and other use cases that involve writing code.

Testing React Ace Editor Before Production

It is vital to test the editor in the same environment as it will run. Check its functionality with small pieces of code and large documents, on different screen sizes and in all supported languages.

The ability to use keyboard shortcuts, copy-paste, focus-trapping, and read-only mode should also be tested if they are used in the editor. Testing of small usability details in an editor is critical because users spend the majority of their time in it.

Finally, the testing of the editor within the complete React application allows finding problems with its rendering or state caused by other components, CSS, or scripts. The same editor code might work differently in isolation and in a real application after it is added to it.

Working With Multiple Editor Modes

One useful part of Ace Editor is that the same editor component can be used for different types of code. A React application may need to display JavaScript in one place, HTML in another, and JSON or CSS somewhere else. Instead of creating a completely different editor for each case, you can change the mode based on what the user is working with.

This can be useful in applications such as admin panels, configuration tools, documentation platforms, and developer-facing products. The mode controls how the content is highlighted and presented, while the rest of the editor configuration can remain mostly the same.

Keeping the mode separate from the rest of the editor settings also makes the component easier to reuse. If the application later adds another supported language, you can add the required mode without changing the overall editor implementation.

Using Themes Based on the Application

The appearance of the editor is often decided by the fact that you need to spend long hours working with it. Ace editor has a variety of themes to choose from so that the code area would match the overall UI of your application.

For instance, using a light theme would be more appropriate for a documentation or learning platform while a dark theme would suit a coding oriented application more. Themes can be toggled in apps that have both dark and light appearance.

It is recommended to have the same theme across all areas of the application including the code editor to provide a pleasant experience for the user

Having a code editor that is made in a completely different UI style than the website or application would be unpleasant and would greatly affect the UX.

Handling User Input Carefully

When users can edit code inside a React application, the editor content may eventually be sent somewhere else. It could be saved, validated, processed by an API, or used by another part of the application. Because of this, it helps to decide what should happen to the content before adding additional editor features.

For example, an application that saves code should have a clear point at which the content is submitted rather than sending an update for every character typed. Similarly, if the editor is connected to an API, the application should handle loading states and failed requests instead of assuming every request will succeed.

Keeping these responsibilities outside the editor itself makes the component easier to reuse. The editor handles editing, while the surrounding React application decides what to do with the resulting content.

When React Ace Editor Makes Sense

React Ace Editor is particularly useful when a project needs an actual code editing experience rather than a simple text field. Features such as syntax highlighting, themes, keyboard interaction, autocomplete, and editor events can save considerable development work.

It may be used in coding platforms, internal developer tools, configuration interfaces, educational applications, and products where users need to edit or review code directly in the browser.

For a basic text input, however, a full code editor may be unnecessary. The additional configuration and functionality only make sense when users actually benefit from code-focused features. Choosing the editor based on the application’s requirements keeps the implementation simpler and avoids adding unnecessary complexity.

Keeping the Editor Component Reusable

If the same editor needs to be used in several places, it seems much more convenient to create a component that can be reused anywhere. In this component, all the necessary settings for its work can be indicated, such as themes, font sizes, widths, and other editor options. Moreover, the current screen can independently specify which mode and initial content the editor should have.

This approach is also relevant if it turns out that the project needs to use the same editor in more than one place. This way, subsequent changes and additions to the component will not require any effort. It will be enough to edit the component’s code, and all the necessary changes will be displayed without any problems.

A similar approach should be used if the project needs to use the same editor in more than one place. Such a solution will be especially relevant in large projects with many screens, in which it will be necessary to make some changes to the React component so that the editor can perform its function.

Conclusion

The React Ace Editor gives power to developers as they edit code inside React applications using a very rich set of features and customization options. Through getting comfortable with the nuances and implementing good practices, developers can have a better coding experience and higher productivity which means having their code efficient, developing skills, and saving time. Be it a small-scale or large-scale project, React Ace Editor is an invaluable component with which to equip your toolkit due to it being scalable, customisable, and performance optimized.
To learn more about Ace Editor and its capabilities, check out their official website.
For additional insightful articles and information on custom software development services, please reach out to us.

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Ace Editor Mastery: Enhancing Your Code Editing Skills with React

Instruction : Render Ace Editor from react side.

Now let’s install React Ace Editor in your React app.

Installing with npm

Basic usage and configuration options for Ace Editor

Customizing React Ace Editor

Examining customization options for outlook, themes, and highlighting syntax.

Implementing custom key bindings and Handling Editor Events: Focus, Blur and Transformation

Ace Editor is a powerful tool with some inner functionality and techniques.

Lets Go Ahead and Incorporate Implementation of Editor, Copy, Cut, and Paste Events In Ace Editor

Managing Editor State in React Ace Editor

Using Read-Only Mode

Keeping the Editor Responsive

Saving and Loading Code

Testing React Ace Editor Before Production

Working With Multiple Editor Modes

Using Themes Based on the Application

Handling User Input Carefully

When React Ace Editor Makes Sense

Keeping the Editor Component Reusable

Conclusion

Get a Fast Estimate on Your Software
Development Project

Frequently Asked Question

Ace Editor Mastery: Enhancing Your Code Editing Skills with React

Instruction : Render Ace Editor from react side.

Now let’s install React Ace Editor in your React app.

Installing with npm

Basic usage and configuration options for Ace Editor

Customizing React Ace Editor

Examining customization options for outlook, themes, and highlighting syntax.

Implementing custom key bindings and Handling Editor Events: Focus, Blur and Transformation

Ace Editor is a powerful tool with some inner functionality and techniques.

Lets Go Ahead and Incorporate Implementation of Editor, Copy, Cut, and Paste Events In Ace Editor

Managing Editor State in React Ace Editor

Using Read-Only Mode

Keeping the Editor Responsive

Saving and Loading Code

Testing React Ace Editor Before Production

Working With Multiple Editor Modes

Using Themes Based on the Application

Handling User Input Carefully

When React Ace Editor Makes Sense

Keeping the Editor Component Reusable

Conclusion

Get a Fast Estimate on Your Software Development Project

Frequently Asked Question

What is React Ace Editor?

How do you install Ace Editor in a React application?

Can React Ace Editor support different programming languages?

Can the React Ace Editor be customized?

Can you track events such as copy, paste, focus, and blur?

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