Devscribe

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Contributors:

1. Vladislav Artiukhov
2. Dmitrii Artiukhov

Description:

Full-fledged IDE developed in Kotlin with support of syntax highlighting, file renaming/creation/deletion, and search functionalities | Semester project, 3rd year at Constructor University, 2023.

Supported functionality:

• Caret movement via keyboard arrows and mouse clicks.
• Text typing and keyboard special characters support: BACKSPACE, DELETE, CTRL+ARROW.
• Optimized render via drawing only the text visible in the viewport.
• Vertical and Horizontal canvas scrolling.
• Text searching inside opened file and navigation to prev/next search result entry.
• Ability to open multiple files using tabs.
• VFS integration: opening project directory from OS (use Ctrl + O), saving files on disk, file renaming, file deletion, file creation.
• Implementation of Lexer for a fictional programming language.
• Syntax highlighting.
• Navigation without mouse use (using tabs only).
• Selection via mouse drags and keyboard arrows movement.
• Copy/paste/cut functionality of selected text.
• Editor text resizing.
• Theme changing.

Implementation details:

• Array of strings is used as text management data structure; interface allows seamless integration of other structures.
• Syntax highlighting is implemented via tokens generated by Lexer.
• Support for an arbitrary number of VFS commands via Command pattern and execution pipeline using queue of commands and additional worker thread.

Available shortcuts:

• CTRL + C -- copy selected text.
• CTRL + V -- insert text from clipboard.
• CTRL + X -- copy and cut selected text.
• CTRL + O -- open a folder from OS file system.
• CTRL + SHIFT + - -- make editor text smaller.
• CTRL + SHIFT + + -- make editor text bigger.
• CTRL + F -- open serach bar.
• CTRL + SHIFT + T -- change current editor theme.
• CTRL + S -- save edited VFS file into actual file in OS file system.
• TAB / CTRL + TAB -- focus on the next UI element.
• SHIFT + TAB / CTRL + SHIFT + TAB -- focus on the previous UI element.

Demos:

Theme switching:

Text resizing:

Manipulation of a huge file (performance demonstration):

The demonstrated file contains ~10K lines of code.

Text writing:

Selection & Deletion:

Folder selection from file system:

How to build and run the project:

Pretty straight-forward: clone the project repo and build the project via Intellij IDE.