Editing

• Syntax highlighting
• Error highlighting
  • Unresolved classes marked as errors
  • Unresolved unqualified properties marked as warnings
  • Incompatible types assignments marked as warnings
  • Inapplicable method calls marked as warnings
• Code folding
• Code formatter
• Comments and "To Do" view support
• "add missing import" intention

Execution, Debugging & Compilation

• Debugging support (setting breakpoints, view stack)

• GDK configuration
• Grails configuration
• Run configuration for Groovy scripts
• Make or rebuild java+groovy project entire

Code Completion 

• context sensitive keyword completion
• Completion of methods, fields, classes
  • Completion makes use of type inference
  • Default methods completed
  • Swing builder methods are completed, swing properties are completed in method argument list
• Resolve
  • Resolve groovy to groovy classes, methods, fields
  • Resolve groovy to java classes, methods, fields
  • Resolve java to groovy classes, methods, fields

Surround with (Alt+Ctrl+T)

• if () {} / else {}
•  while () {}
• try / catch / finally
• closure {}
• (Type) expr

Introduce variable (Alt+Ctrl+V)

• Introduce variable
• Offer the default type and variable name

Inline variable (Alt+Ctrl+N)

• Inline variable and all occurences

Structure view

Shows

• classes
• methods
• fields

founded in groovy file

File structure (Ctrl+F12)

• The popup window contains classes, methods, fields.

Find usage (Alt+F7)

• Implements groovy classes search

Parameter Info (Ctrl+F12)

• The usual ctrl-P shortcut shows signatures of candidate methods at method call site

Class search (Ctrl+N)

•  Searches class by prefix of class groovy name

Builders support

•  Convinient work with builder because of intellectual properties completion

Grails

• Grails SDK configuration
• Grails controller, view, domain class, job, script,  service, taglib creation
• Grails generators are built in; output to console