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150 lines
12 KiB
Markdown
150 lines
12 KiB
Markdown
---
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title: Plugin Development FAQ
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---
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This FAQ is a topical index of questions that have been asked (and answered) on our
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[OpenAPI forum](https://devnet.jetbrains.com/community/idea/open_api_and_plugin_development)
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## Open-Source Plugins
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* [How do I compile the Scala plugin?](https://devnet.jetbrains.com/thread/266848)
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## Version Differences
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* [How do I replace my usage of Project.getProjectFile() in 7.0?](https://devnet.jetbrains.com/thread/269447)
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* [How do I replace my usage of DataConstants with DataKeys in 7.0?](https://devnet.jetbrains.com/thread/269493)
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* [How do I replace my usage of ToolWindowManager.registerToolWindow() in 7.0?](https://devnet.jetbrains.com/thread/269001)
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* [How do I replace my usage of PsiSearchHelper.findReferences() in 7.0?](https://devnet.jetbrains.com/thread/268094)
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* [How do I replace my usage of DelayedFileStatusProvider in 6.0?](https://devnet.jetbrains.com/thread/213530)
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## Action System
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* [How do I trigger actions programmatically?](https://devnet.jetbrains.com/thread/268927)
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* [How do I add a main menu item?](https://devnet.jetbrains.com/thread/267076)
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* [How do I customize the "New..." menu?](https://devnet.jetbrains.com/thread/247161)
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* [How do I customize the compiler output context menu?](https://devnet.jetbrains.com/thread/257558)
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* [How do I get the context of an action (selected file, active project etc.)?](https://devnet.jetbrains.com/thread/234000)
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* [How do I change the icon of an action dynamically?](https://devnet.jetbrains.com/thread/233379)
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* [How do I add icons to the IDEA toolbar?](https://devnet.jetbrains.com/thread/148491)
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* [Where do I get the list of built-in action IDs?](https://devnet.jetbrains.com/thread/162503)
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## Accessing and Modifying the Source Code
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* [How do I find all subclasses of a class?](https://devnet.jetbrains.com/thread/268652)
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* [How do I find all anonymous classes created in a class?](https://devnet.jetbrains.com/thread/267506)
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* [How do I calculate the value of a string literal token?](https://devnet.jetbrains.com/thread/267171)
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* [How do I rename or move a Java class?](https://devnet.jetbrains.com/thread/268809)
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* [How do I build the list of all classes used by a given class or package?](https://devnet.jetbrains.com/thread/267757)
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* [How do I insert whitespace into the PSI?](https://devnet.jetbrains.com/thread/216585)
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* [How do I add properties to a .properties file?](https://devnet.jetbrains.com/thread/220800)
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* [How do I find specific method calls inside a PsiMethod?](https://devnet.jetbrains.com/thread/222157)
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* [What is the lifecycle of a PSI element?](https://devnet.jetbrains.com/thread/251579)
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* [How do I find a file given its name (but no path)?](https://devnet.jetbrains.com/thread/124081)
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* [How do I create a new class in the given package?](https://devnet.jetbrains.com/thread/265094)
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* [How do I make a PsiClass extend another PsiClass?](https://devnet.jetbrains.com/thread/263617)
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* [How do I find references to a class from non-Java files?](https://devnet.jetbrains.com/thread/143947)
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* [How do I find the source file given the path to a .class file?](https://devnet.jetbrains.com/thread/148446)
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* [How do I find classes with the specified non-qualified name?](https://devnet.jetbrains.com/thread/156040)
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* [How do I find the module in which a class is located?](https://devnet.jetbrains.com/thread/159258)
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## Working with XML and XML DOM
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* [How do I change the value of an XML attribute through the PSI?](https://devnet.jetbrains.com/thread/267398)
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* [How do I add custom references to Java elements in XML files?](https://devnet.jetbrains.com/thread/196522)
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* [How do I programmatically register a DTD or schema?](https://devnet.jetbrains.com/thread/256637)
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* [What is the "strict" parameter in DomElement.getParentOfType()?](https://devnet.jetbrains.com/thread/269542)
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## Code Completion
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* [How do I determine what type of code completion was invoked?](https://devnet.jetbrains.com/thread/265400)
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* [How do I provide additional code completion in specific places of a Java file?](https://devnet.jetbrains.com/thread/266818)
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## Refactoring
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* [How can I receive notifications about refactoring events?](https://devnet.jetbrains.com/thread/248923)
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* [How do I show a refactoring dialog programmatically?](https://devnet.jetbrains.com/thread/162502)
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## Run/Debug
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* [How do I implement a custom run configuration?](https://devnet.jetbrains.com/thread/251054)
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## Make/Compile
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* [How do I get access to class files generated by javac?](https://devnet.jetbrains.com/thread/146746)
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## Version Control Integration
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* [Can I provide line status markers for files in a custom file system?](https://devnet.jetbrains.com/thread/269503)
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* [How do I update the state of VCS actions depending on file status?](https://devnet.jetbrains.com/thread/268542)
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* [How can I find out the module of a deleted file?](https://devnet.jetbrains.com/thread/267779)
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* [Can I provide additional decorations for changelists in the Changes view?](https://devnet.jetbrains.com/thread/267462)
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* [How do I report out-of-date files?](https://devnet.jetbrains.com/thread/269156)
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## Test Framework
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* [How can I use the new test framework?](https://devnet.jetbrains.com/thread/247156)
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* [How do I create a library dependency in my test module?](https://devnet.jetbrains.com/thread/269495)
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## Plugin Architecture
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* [Why are the extension elements in my plugin.xml red?](https://devnet.jetbrains.com/thread/269517)
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* [How can I read the plugin descriptor of my plugin from code?](https://devnet.jetbrains.com/thread/225115)
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* [How do I provide a custom exception reporter for my plugin?](https://devnet.jetbrains.com/thread/264619)
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* [How can I add the help topics of my plugin to the IntelliJ IDEA help system?](https://devnet.jetbrains.com/thread/261416)
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* [How do I get the version of IntelliJ IDEA under which my plugin is running?](https://devnet.jetbrains.com/thread/156440)
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## Editors, Documents and Files
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* [Why doesn't the file change on disk after I changed it through the PSI?](https://devnet.jetbrains.com/thread/269379)
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* [Can I hook into the file save logic?](https://devnet.jetbrains.com/thread/269246)
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* [Can I mark a part of a file as read-only?](https://devnet.jetbrains.com/thread/267895)
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* [How do I control what happens when the user tries to edit such a part?](https://devnet.jetbrains.com/thread/269406)
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* [How do I implement a custom editor?](https://devnet.jetbrains.com/thread/214836)
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* [How can I show several editors for a single file in tabs?](https://devnet.jetbrains.com/thread/256436)
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* [Can I open an editor which has no underlying file on disk?](https://devnet.jetbrains.com/thread/267233)
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* [How do I save the content of my custom editor when the user saves all documents?](https://devnet.jetbrains.com/thread/268178)
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* [How do I highlight elements in a source code editor?](https://devnet.jetbrains.com/thread/215366)
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* [How do I allow to navigate between highlighted elements using Find Next?](https://devnet.jetbrains.com/thread/215724)
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* [How do I force code to be re-analyzed?](https://devnet.jetbrains.com/thread/224999)
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* [How do I get the active editor instance?](https://devnet.jetbrains.com/thread/264626)
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* [How do I get the cursor position in the current editor?](https://devnet.jetbrains.com/thread/263035)
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* [How do I clear the read-only status of a file?](https://devnet.jetbrains.com/thread/260112)
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* [How do I show a popup hint in an editor?](https://devnet.jetbrains.com/thread/138488)
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* [How do I create live template-like red box edit regions in an editor?](https://devnet.jetbrains.com/thread/158355)
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* [How can I show an editor with error highlighting in a toolwindow?](https://devnet.jetbrains.com/thread/158409)
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## Inspections
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* [Can I build an inspection that processes XML files?](https://devnet.jetbrains.com/message/5188503)
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* [Why are the inspection results shown multiple times?](https://devnet.jetbrains.com/thread/256665)
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* [How can I provide a quick fix that creates a method?](https://devnet.jetbrains.com/thread/253735)
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* [Is it possible to inspect only the elements that have been modified after the last full inspection?](https://devnet.jetbrains.com/thread/146143)
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## Project Structure
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* [Can I add a new module dependency storage format?](https://devnet.jetbrains.com/thread/269362)
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* [What is the Pair to be passed to JavaModuleBuilder.setSourcePaths()?](https://devnet.jetbrains.com/thread/247157)
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* [How do I access all configured JDKs?](https://devnet.jetbrains.com/thread/262185)
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## Custom Languages
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* [How do I provide Parameter Info support for my language?](https://devnet.jetbrains.com/thread/264574)
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* [How do I provide auto-popup code completion in my language?](https://devnet.jetbrains.com/thread/268106)
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* [How to make a closing brace unindent?](https://devnet.jetbrains.com/thread/213765)
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* [How to automatically insert closing quotes?](https://devnet.jetbrains.com/thread/212228)
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* [How do I provide Ctrl+mouse popups for my language?](https://devnet.jetbrains.com/thread/215354)
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* [How do I enable debugging for my custom language which is compiled into Java?](https://devnet.jetbrains.com/thread/220451)
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* [How do I generate virtual Java classes mirroring the classes of my language?](https://devnet.jetbrains.com/thread/220280)
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## User Interface
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* [How do I provide animated status bar notifications?](https://devnet.jetbrains.com/thread/268421)
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* [How do I enable file name completion in a combobox?](https://devnet.jetbrains.com/thread/267558)
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* [How do I show a popup with left-aligned and right-aligned parts for each item?](https://devnet.jetbrains.com/thread/269169)
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* [Can I use an embedded Web browser from my plugin?](https://devnet.jetbrains.com/thread/267280)
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* [How do I provide a custom icon for files/PSI elements?](https://devnet.jetbrains.com/thread/215468)
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* [Can I show a progress indicator for WriteActions?](https://devnet.jetbrains.com/thread/245819)
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* [How do I make it possible to search the options of my plugin in the Settings dialog?](https://devnet.jetbrains.com/thread/204909)
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* [How do I show a custom window or popup based on Structure View?](https://devnet.jetbrains.com/thread/255255)
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* [Is it possible to extend the Project View tree?](https://devnet.jetbrains.com/thread/263998)
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* [How do I show the "Project Structure" dialog programmatically?](https://devnet.jetbrains.com/thread/264241)
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* [How do I print messages in the console view?](https://devnet.jetbrains.com/thread/263776)
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* [How do I show the package selector dialog programmatically?](https://devnet.jetbrains.com/thread/260537)
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* [How do I provide syntax and error highlighting in a combo box editor?](https://devnet.jetbrains.com/thread/150616)
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* [How can I get notified when my toolwindow is activated?](https://devnet.jetbrains.com/thread/153237)
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* [How can I provide Close and Rerun buttons in my Usage View window?](https://devnet.jetbrains.com/thread/155452)
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## General
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* [How do I get the currently active project outside of an AnAction?](https://devnet.jetbrains.com/thread/267876)
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* [How do I detect when a project is closing?](https://devnet.jetbrains.com/thread/267877)
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* [How can I implement a custom stack trace analyzer?](https://devnet.jetbrains.com/thread/252590)
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* [Where is the state of an ApplicationComponent stored?](https://devnet.jetbrains.com/thread/264364)
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* [How do I open a project programmatically?](https://devnet.jetbrains.com/thread/150233)
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* [How do I get the folder of the currently selected file?](https://devnet.jetbrains.com/thread/156790)
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* [How do I encrypt some values in the configuration data of my plugin?](https://devnet.jetbrains.com/thread/148273)
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* [How can I track exceptions from my plugin?](https://devnet.jetbrains.com/message/5527276)
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