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Allowing root view to be focused was stealing focus away from the editor whenever a click event made it to the root view. This unnecessary switching of focus was interfering with the ability to drag tabs. But if RootView can't be focused, focus ends up being returned to the document body when there are no focusable elements. This would be fine, except for the fact that we frequently bind global events on root view, and so they aren't triggered when events are triggered on the body. We could just bind all global events on the body, but this would require us to always attach elements to the DOM during specs, which is a serious performance killer in specs. The workaround is in the keymap. When the keymap handles a key event that was triggered on the body, it triggers the corresponding semantic event on the root view anyway, so from the event perspective, it's as if the root view actually had focus. The only place this might fall down is if someone wants to capture raw key events. But that's the keymap's job anyway, and we maybe add a hook on the keymap if such a need ever arises.
Atom — Futuristic Text Editing
Building from source
Be forwarned: Atom is pre-alpha software!
Requirements
Mountain Lion
The Setup™
Xcode (Get Xcode from the App Store (ugh, I know))
-
gh-setup atom
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cd ~/github/atom &&
rake install
Atom is installed! Type atom [path] from the commmand line or find it in /Applications/Atom.app
Your ~/.atom Directory
A basic ~/.atom directory is installed when you run rake install. Take a look at ~/.atom/user.coffee for more information.
Basic Keyboard shortcuts
Atom doesn't have much in the way of menus yet. Use these keyboard shortcuts to explore features.
meta-o : open file/directory
meta-n : new window
meta-t : open fuzzy file finder
meta-:` : open command prompt
meta-f : open command prompt with /
meta-g : repeat the last search
meta-r : reload the current window
meta-alt-ctrl-s : run specs
meta-alt-arrows : split screen in direction of arrow
meta-alt-w : toggle word wrap
meta-alt-f : fold selected lines
meta-l : go to line
Most default OS X keybindings also work.
TreeView Keyboard shortcuts
With the treeview focused:
a : Add a new file or directory. Directories end with '/'.
m : Rename a file or directory
Init Script
Atom will require ~/.atom/user.coffee whenever a window is opened or reloaded if it is present in your
home directory. This is a rudimentary jumping off point for your own customizations.
Command Panel
A partial implementation of the Sam command language
Examples
, selects entire file
1,4 selects lines 1-4
/pattern selects the first match after the cursor/selection
s/pattern/replacement replace first text matching pattern in current selection
s/pattern/replacement/g replace all text matching pattern in current selection
,s/pattern/replacement/g replace all text matching pattern in file
1,4s/pattern/replacement replace all text matching pattern in lines 1-4
x/pattern selects all matches in the current selections
,x/pattern selects all matches in the file
,x/pattern1/ x/pattern2 "structural regex" - selects all matches of pattern2 inside matches of pattern1
Key Bindings
Atom has a CSS based key binding scheme. We will add a nicer loading mechanism, but for now you can bind
keys by calling window.keymap.bindKeys with a CSS selector and a hash of key-pattern -> event mappings.
window.keymap.bindKeys '.editor'
'ctrl-p': 'party-time'
'ctrl-q': 'open-dialog-q'
When a keypress matches a pattern on an element that matches the selector, it will be translated to the named event, which will bubble up the DOM from the site of the keypress. Extension code can listen for the named event and react to it.