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Created CodeEditor widget #28

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Merged
matthew-carroll merged 12 commits into from
Jan 4, 2026
Merged

Created CodeEditor widget #28

matthew-carroll merged 12 commits into from
Jan 4, 2026

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@matthew-carroll
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@matthew-carroll matthew-carroll commented Jan 1, 2026 •
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Created CodeEditor widget

Gestures:

  • Click: Places caret
  • Click + Shift: Expand selection to the click position
  • Click and drag: Expands the selection
  • Double click: Selects token (or comment word)
  • Double click and drag: Selects token and keeps it selected while dragging to expand the selection
  • Triple click: Selects line
  • Triple click and drag: Selects line and keeps its selected while dragging to expand the selection

Keyboard:

  • Left/Right: Moves caret (or expands selection) by one character.
  • Alt/Opt + Left/Right: Moves caret (or expands selection) by token (or word within comments). Also ignores and stays away from spaces between tokens and words.
  • Cmd/Ctrl + Left/Right: Moves caret (or expands selection) to the start/end of a line.
  • Up/Down: Moves caret (or expands selection) one line up/down. Retains x-offset while moving up/down.
  • Page Up/Page Down: Moves caret (or expands selection) up/down by the height of the viewport. Retains x-offset while moving up/down.
  • Esc: Collapses selection

Creates CodeDocumentSyntaxHighlighter and SyntaxTheme interfaces

The work in this PR is in service of Kalua. I'm building out functionality in Inception that my ongoing work in Kalua requires.

Screen.Recording.2026-01-03.at.5.04.46.PM.mov

@matthew-carroll
Created CodeEditor widget:
dc8162e 
 * Places caret on click
 * Expands selection on click and drag
 * Selects token on double click
 * Moves caret and expands selection with keyboard arrow keys
 * Creates CodeDocumentSyntaxHighlighter and SyntaxTheme interfaces
@matthew-carroll
Implemented double click to select tokens, avoid spaces, select line …
2da7922 
…indends, and select words within comments
@matthew-carroll
Moved Dart language support to its own export in /language_dart.dart
2f83585
@matthew-carroll
Triple click selects whole line. CodeEditorPresenter is now subclasse…
a4459ec 
…d per language to configure things like which comment syntax to use.
@matthew-carroll
Brought back highlighted line for collapsed selection
6e81575
@matthew-carroll
Implemented double-click and drag and triple-click and drag, still ne…
b286a6e 
…eds tests
@matthew-carroll
Cleaned up some test infra code, fixed an oversight in the test CodeE…
d47490f 
…ditorPresenter that caused a couple test failures
@matthew-carroll
Implemented CMD caret pushing and selection expansion
817c71f
@matthew-carroll
Render end of line highlight when selection starts at the very end of…
e14029e 
… the line and goes to the next line
@matthew-carroll
Implemented ESC to collapse selection
c770ac3
@matthew-carroll
Implement ALT/OPT LEFT/RIGHT movement over tokens and comment words
feb553d
@matthew-carroll matthew-carroll merged commit d30fe83 into main Jan 4, 2026
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@angelosilvestre angelosilvestre Awaiting requested review from angelosilvestre

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@matthew-carroll