Live Template Variables
Template variables in live templates enable user input. After a template is expanded, variables appear in the editor as input fields.
Variables within templates are declared in the following format:
Variables are defined by expressions, and can accept some default values.
This expression may contain constructs of the following basic types:
- String constants in double quotes.
- The name of another variable defined in a live template.
- Predefined functions with possible arguments.
Predefined template variables
IntelliJ IDEA supports two predefined live template variables
$SELECTION$, both of them are read-only.
$END$indicates the position of the cursor after the template is expanded. For example, the template
return $END$;will be expanded into
return ;with the cursor positioned right before the semicolon.
$SELECTION$is used in surround templates and stands for the code fragment to be wrapped. After the template is expanded, the selected text is wrapped as specified in the template. For example, if you select
EXAMPLEin your code and invoke the
"$SELECTION$"template via the assigned abbreviation or by pressing Ctrl+Alt+T and selecting the desired template from the list, IntelliJ IDEA will wrap the selection in double quotes as follows:
Predefined functions used in live template variables
|Creates a symbol of type with an annotation that resides at the specified location. For an example, see Live Templates in the iterations group.|
|Suggests a supertype for a Kotlin object expression.|
|Suggests all array variables applicable in the current scope. For an example, see Live Templates in the iterations group.|
|Converts a string into cameCase. For example, |
|Capitalizes all the letters of a CamelCase name passed as parameter, and inserts an underscore between the parts. For example, |
|Capitalizes the first letter of the parameter.|
|Casts the right-side expression to the left-side expression type. It is used in the iterations group to have a single template for generating both raw-type and Generics Collections.|
|Returns the name of the current class (the class where the template is expanded).|
|This expression substitutes for the class name completion at the variable position.|
|Returns the contents of the system clipboard.|
|Invokes code completion at the position of the variable.|
|Invokes smart type completion at the position of the variable.|
|Returns component type of an array. For example, see the Live Templates in the iterations group in the other group.|
|Returns the current package name.|
| Shows the current system in the specified format. |
By default, the current date is returned in the default system format. However, if you specify date format in double quotes, the date will be presented in this format:
|Replaces the first letter of a name parameter with the corresponding lowercase letter.|
|Shows the children of the class entered as a string parameter.|
|Shows a list of comma-separated strings suggested for completion at the template invocation.|
|Escapes a string.|
|Returns the expected type of the expression into which the current template expands. Makes sense if the template expands in the right part of an assignment, after |
|Returns the name of a file with its extension.|
|Returns the name of a file without its.|
|Returns the first word of a string.|
|Returns Groovy script with the specified code.|
You can use
|Makes a guess on the type of elements stored in a |
|Returns the type of an iterable component, such as an array or a collection.|
|Returns the name of a variable that can be iterated.|
|Returns a suggested name for an index.|
|Returns the suggested name for a variable.|
|Returns the current line number.|
| Converts a capitalized camelCase string into lower case and inserts n-dashes as separators. For example, |
|Returns the name of the embracing method (where the template is expanded).|
|Returns the list of parameters of the embracing method (where the template is expanded).|
|Returns the type of the value returned by the current method (the method within which the template is expanded).|
|Returns the fully qualified name of the current class (the class where the template is expanded). |
Clear the Shorten FQ names check box.
|Declares the left-side variable with a type of the right-side expression. It is used in the iterations group to have a single template for generating both raw-type and Generics Collections.|
|Converts a string into snake_case, for example, |
| Converts a CamelCase string into lower case and inserts spaces as separators. For example, |
| Removes the extension after the specified delimiter and returns only the file name. This is helpful for test file names, for example, |
|Returns the subtypes of the type passed as a parameter.|
|Doesn't suggest |
|Suggests the name of an index variable. Returns |
|Suggests the name for a variable based on the variable type and its initializer expression, according to your code style settings that refer to the variable naming rules.|
For example, if it is a variable that holds an element within iteration, IntelliJ IDEA makes a guess on the most reasonable names, also taking into account the name of the container being iterated.
|Returns the current system time.|
|Returns the type of the variable passed as a parameter.|
|Replaces underscores with CamelHump letters. For example, |
|Replaces underscores with spaces.|
|Returns the name of the current user.|
|Suggests all variables that may be assigned to the type passed as a parameter, for example variableOfType("java.util.Vector"). If you pass an empty string ("") as a parameter, suggests all variables regardless of their types.|