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Chapter 1: Getting Started

  • Why Atom?
  • Installing Atom
  • Atom Basics
  • Summary

Chapter 2: Using Atom

  • Atom Packages
  • Moving in Atom
  • Atom Selections
  • Editing and Deleting Text
  • Find and Replace
  • Snippets
  • Autocomplete
  • Folding
  • Panes
  • Pending Pane Items
  • Grammar
  • Version Control in Atom
  • GitHub package
  • Writing in Atom
  • Basic Customization
  • Summary

Chapter 3: Hacking Atom

  • Tools of the Trade
  • The Init File
  • Package: Word Count
  • Package: Modifying Text
  • Package: Active Editor Info
  • Creating a Theme
  • Creating a Grammar
  • Creating a Legacy TextMate Grammar
  • Publishing
  • Iconography
  • Debugging
  • Writing specs
  • Handling URIs
  • Cross-Platform Compatibility
  • Converting from TextMate
  • Hacking on Atom Core
  • Contributing to Official Atom Packages
  • Creating a Fork of a Core Package in atom/atom
  • Maintaining a Fork of a Core Package in atom/atom
  • Summary

Chapter 4: Behind Atom

  • Configuration API
  • Keymaps In-Depth
  • Scoped Settings, Scopes and Scope Descriptors
  • Serialization in Atom
  • Developing Node Modules
  • Interacting With Other Packages Via Services
  • Maintaining Your Packages
  • How Atom Uses Chromium Snapshots
  • Summary

Reference: API

  • AtomEnvironment
  • BufferedNodeProcess
  • BufferedProcess
  • Clipboard
  • Color
  • CommandRegistry
  • CompositeDisposable
  • Config
  • ContextMenuManager
  • Cursor
  • Decoration
  • DeserializerManager
  • Directory
  • DisplayMarker
  • DisplayMarkerLayer
  • Disposable
  • Dock
  • Emitter
  • File
  • GitRepository
  • Grammar
  • GrammarRegistry
  • Gutter
  • HistoryManager
  • KeymapManager
  • LayerDecoration
  • MarkerLayer
  • MenuManager
  • Notification
  • NotificationManager
  • Package
  • PackageManager
  • Pane
  • Panel
  • PathWatcher
  • Point
  • Project
  • Range
  • ScopeDescriptor
  • Selection
  • StyleManager
  • Task
  • TextBuffer
  • TextEditor
  • ThemeManager
  • TooltipManager
  • ViewRegistry
  • Workspace
  • WorkspaceCenter

Appendix A: Resources

  • Glossary

Appendix B: FAQ

  • Is Atom open source?
  • What does Atom cost?
  • What platforms does Atom run on?
  • How can I contribute to Atom?
  • Why does Atom collect usage data?
  • Atom in the cloud?
  • What's the difference between an IDE and an editor?
  • How can I tell if subpixel antialiasing is working?
  • Why is Atom deleting trailing whitespace? Why is there a newline at the end of the file?
  • What does Safe Mode do?
  • I have a question about a specific Atom community package. Where is the best place to ask it?
  • I’m using an international keyboard and keys that use AltGr or Ctrl+Alt aren’t working
  • I’m having a problem with Julia! What do I do?
  • I’m getting an error about a “self-signed certificate”. What do I do?
  • I’m having a problem with PlatformIO! What do I do?
  • How do I make Atom recognize a file with extension X as language Y?
  • How do I make the Welcome screen stop showing up?
  • How do I preview web page changes automatically?
  • How do I accept input from my program or script when using the script package?
  • I am unable to update to the latest version of Atom on macOS. How do I fix this?
  • I’m trying to change my syntax colors from styles.less, but it isn’t working!
  • How do I build or execute code I've written in Atom?
  • How do I uninstall Atom on macOS?
  • macOS Mojave font rendering change
  • Why does macOS say that Atom wants to access my calendar, contacts, photos, etc.?
  • How do I turn on line wrap?
  • The menu bar disappeared, how do I get it back?
  • How do I use a newline in the result of find and replace?
  • What is this line on the right in the editor view?

Appendix C: Shadow DOM

  • Removing Shadow DOM styles

Appendix D: Upgrading to 1.0 APIs

  • Upgrading Your Package
  • Upgrading Your UI Theme Or Package Selectors
  • Upgrading Your Syntax Theme

Appendix E: Atom server-side APIs

  • Atom package server API
  • Atom update server API

  • mac
  • windows
  • linux

ContextMenuManager Extended

Provides a registry for commands that you’d like to appear in the context menu.

An instance of this class is always available as the atom.contextMenu global.

Context Menu CSON Format

'atom-workspace': [{label: 'Help', command: 'application:open-documentation'}]
'atom-text-editor': [{
  label: 'History',
  submenu: [
    {label: 'Undo', command:'core:undo'}
    {label: 'Redo', command:'core:redo'}
  ]
}]

In your package’s menu .cson file you need to specify it under a context-menu key:

'context-menu':
  'atom-workspace': [{label: 'Help', command: 'application:open-documentation'}]
  ...

The format for use in ::add is the same minus the context-menu key. See ::add for more information.

Methods

::add(itemsBySelector)

Add context menu items scoped by CSS selectors.

Argument Description

itemsBySelector

An Object whose keys are CSS selectors and whose values are Arrays of item Objects containing the following keys:

label

optional

A String containing the menu item’s label.

command

optional

A String containing the command to invoke on the target of the right click that invoked the context menu.

enabled

optional

A Boolean indicating whether the menu item should be clickable. Disabled menu items typically appear grayed out. Defaults to true.

submenu

optional

An Array of additional items.

type

optional

If you want to create a separator, provide an item with type: 'separator' and no other keys.

visible

optional

A Boolean indicating whether the menu item should appear in the menu. Defaults to true.

created

optional

A Function that is called on the item each time a context menu is created via a right click. You can assign properties to this to dynamically compute the command, label, etc. This method is actually called on a clone of the original item template to prevent state from leaking across context menu deployments. Called with the following argument:

event

The click event that deployed the context menu.

shouldDisplay

optional

A Function that is called to determine whether to display this item on a given context menu deployment. Called with the following argument:

event

The click event that deployed the context menu.

id

(internal) A String containing the menu item’s id. Returns a Disposable on which .dispose() can be called to remove the added menu items.

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