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Editor - NetBeans Architecture Questions - NetBeans API Javadoc 5.5.1

NetBeans Architecture Answers for Editor module

WARNING: answering questions version 1.12 rather than the current 1.26.

Interfaces table

Group of java interfaces
Interface NameIn/OutStabilitySpecified in What Document?
EditorAPIExportedOfficial .../org/openide/text/doc-files/api.html

NodesAPIImportedOfficial .../org/openide/nodes/doc-files/api.html

.../overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

UtilitiesAPIImportedOfficial .../org/openide/util/doc-files/api.html

../org-openide-util/overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

SettingsAPIImportedOfficial .../org/openide/options/doc-files/api.html

.../overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

WindowSystemAPIImportedOfficial .../org/openide/windows/doc-files/api.html

org.openide.awtImportedOfficial../org-openide-awt/overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

org.openide.windowsImportedPrivate .../overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

DialogsAPIImportedOfficial .../overview-summary.html

The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

Group of property interfaces
Interface NameIn/OutStabilitySpecified in What Document?
indentEngineExportedStable

Property hold instance of
IndentEngine and this indentation engine is used instead of system one.

javax.swing.text.Document.StreamDescriptionPropertyImportedStable

Property hold instance of
DataObject from which the document was created. This property can be used by the modules and is part of the Editor API.

javax.swing.text.Document.TitlePropertyImportedStable

Property hold instance of String with name of the file being edited. This property can be used by the modules and is part of the Editor API.

javax.swing.text.Document.modificationListenerExportedFriend

In order to fix
issue 51872 the openide needs a way how to be notified about change of a document outside of its Document lock. DocumentListeners are always notified under the lock, so a special contract has been established (since version 5.3) by registering an instance of VetoableListener by calling putProperty ("modificationListener", listener). The NetBeans aware documents are adviced to honor this property and call the listener outside of the document lock when a modification is made. The actual contract of the call can be seen in NbLikeEditorKit.java in methods insertString and remove.


General Information

    Question (arch-what): What is this project good for?

    Answer: The EditorAPI is used for accessing editor-related functionality from within the IDE for use by other modules and the core IDE itself.

    Question (arch-overall): Describe the overall architecture.

    WARNING: Question with id="arch-overall" has not been answered!

    Question (arch-usecases): Describe the main use cases of the new API. Who will use it under what circumstances? What kind of code would typically need to be written to use the module?

    WARNING: Question with id="arch-usecases" has not been answered!

    Question (arch-time): What are the time estimates of the work?

    WARNING: Question with id="arch-time" has not been answered!

    Question (arch-quality): How will the quality of your code be tested and how are future regressions going to be prevented?

    WARNING: Question with id="arch-quality" has not been answered!

    Question (arch-where): Where one can find sources for your module?

    WARNING: Question with id="arch-where" has not been answered!

Project and platform dependencies

    Question (dep-nb): What other NetBeans projects and modules does this one depend on?

    Answer: Module uses following API's:

    Default answer to this question is:

    These modules are required in project.xml file:

    • UtilitiesAPI - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.
    • NodesAPI - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.
    • org.openide.awt - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.
    • org.openide.windows - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.
    • DialogsAPI - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.
    • SettingsAPI - The module is needed for compilation. The module is used during runtime. Specification version 6.2 is required.

    Question (dep-non-nb): What other projects outside NetBeans does this one depend on?

    Answer: Apart from javax.swing.text none.

    Question (dep-platform): On which platforms does your module run? Does it run in the same way on each?

    Answer: Any platform. Runs the same way.

    Question (dep-jre): Which version of JRE do you need (1.2, 1.3, 1.4, etc.)?

    Answer: JRE 1.3

    Question (dep-jrejdk): Do you require the JDK or is the JRE enough?

    Answer: JRE

Deployment

    Question (deploy-jar): Do you deploy just module JAR file(s) or other files as well?

    Answer: Classes belonging to this module do not reside in standalone library. They are bundled together with other parts of the openide in openide.jar.

    Question (deploy-nbm): Can you deploy an NBM via the Update Center?

    Answer: Module does not have its own NBM.

    Question (deploy-shared): Do you need to be installed in the shared location only, or in the user directory only, or can your module be installed anywhere?

    Answer: Module does not have its own jar.

    Question (deploy-packages): Are packages of your module made inaccessible by not declaring them public?

    Answer: No, but it is not necessary. The module has just one public package.

    Question (deploy-dependencies): What do other modules need to do to declare a dependency on this one?

    WARNING: Question with id="deploy-dependencies" has not been answered!

Compatibility with environment


Access to resources

    Question (resources-file): Does your module use java.io.File directly?

    Answer: Yes, for showing absolute filename path in the tooltip.

    Question (resources-layer): Does your module provide own layer? Does it create any files or folders in it? What it is trying to communicate by that and with which components?

    Answer: No.

    Question (resources-read): Does your module read any resources from layers? For what purpose?

    Answer: No.

    Question (resources-mask): Does your module mask/hide/override any resources provided by other modules in their layers?

    Answer: No.

Lookup of components

    Question (lookup-lookup): Does your module use org.openide.util.Lookup or any similar technology to find any components to communicate with? Which ones?

    Answer: Yes, it looks for IndentEngine service type class. This class is defined in this module. The first one indentation engine found for the given MIME is returned. Others are ignored.

    Question (lookup-register): Do you register anything into lookup for other code to find?

    Answer: No.

    Question (lookup-remove): Do you remove entries of other modules from lookup?

    Answer: No.

Execution Environment

    Question (exec-property): Is execution of your code influenced by any environment or Java system (System.getProperty) property?

    Answer: No.

    Question (exec-component): Is execution of your code influenced by any (string) property of any of your components?

    Answer: The module can be influencend by this property: indentEngine - Property hold instance of IndentEngine and this indentation engine is used instead of system one. It set these Swing properties: javax.swing.text.Document.StreamDescriptionProperty - Property hold instance of DataObject from which the document was created. This property can be used by the modules and is part of the Editor API. javax.swing.text.Document.TitleProperty - Property hold instance of String with name of the file being edited. This property can be used by the modules and is part of the Editor API. javax.swing.text.Document.modificationListener - In order to fix issue 51872 the openide needs a way how to be notified about change of a document outside of its Document lock. DocumentListeners are always notified under the lock, so a special contract has been established (since version 5.3) by registering an instance of VetoableListener by calling putProperty ("modificationListener", listener). The NetBeans aware documents are adviced to honor this property and call the listener outside of the document lock when a modification is made. The actual contract of the call can be seen in NbLikeEditorKit.java in methods insertString and remove.

    Question (exec-ant-tasks): Do you define or register any ant tasks that other can use?

    WARNING: Question with id="exec-ant-tasks" has not been answered!

    Question (exec-classloader): Does your code create its own class loader(s)?

    Answer: No.

    Question (exec-reflection): Does your code use Java Reflection to execute other code?

    Answer: Yes, it calls protected method MultiDataObject.getCookieSet(). The class which calls this is deprecated, but it is still in use by clients.

    Another reflection is used in QuietEditorPane, where DelegatingTransferHandler delegates also on two protected methods of TransferHandler: createTransferable and exportDone. This delegation is needed because of drag and drop feature described in issue #53439

    Question (exec-privateaccess): Are you aware of any other parts of the system calling some of your methods by reflection?

    Answer: No.

    Question (exec-process): Do you execute an external process from your module? How do you ensure that the result is the same on different platforms? Do you parse output? Do you depend on result code?

    Answer: No.

    Question (exec-introspection): Does your module use any kind of runtime type information (instanceof, work with java.lang.Class, etc.)?

    Answer: The Editor module operate with plain Swing Document in its APIs and checks whether the document does not implement some of the Netbeans extensions defined in NbDocument. It also tries to retype CloneableTopComponent.Ref.getComponents() to its CloneableEditor. If some document does not implement StyledDocument, it is wrapped into FilterDocument which implements limited StyledDocument functionality.

    Question (exec-threading): What threading models, if any, does your module adhere to?

    WARNING: Question with id="exec-threading" has not been answered!

    Question (security-policy): Does your functionality require modifications to the standard policy file?

    WARNING: Question with id="security-policy" has not been answered!

    Question (security-grant): Does your code grant additional rights to some other code?

    WARNING: Question with id="security-grant" has not been answered!

Format of files and protocols

    Question (format-types): Which protocols and file formats (if any) does your module read or write on disk, or transmit or receive over the network? Do you generate an ant build script? Can it be edited and modified?

    Answer: None.

    Question (format-dnd): Which protocols (if any) does your code understand during Drag & Drop?

    Answer: None.

    Question (format-clipboard): Which data flavors (if any) does your code read from or insert to the clipboard (by access to clipboard on means calling methods on java.awt.datatransfer.Transferable?

    Answer: None.

Performance and Scalability

    Question (perf-startup): Does your module run any code on startup?

    Answer: No.

    Question (perf-exit): Does your module run any code on exit?

    Answer: No.

    Question (perf-scale): Which external criteria influence the performance of your program (size of file in editor, number of files in menu, in source directory, etc.) and how well your code scales?

    Answer: Size of file which is going to be open.

    Question (perf-limit): Are there any hard-coded or practical limits in the number or size of elements your code can handle?

    Answer: No.

    Question (perf-mem): How much memory does your component consume? Estimate with a relation to the number of windows, etc.

    Answer: Unknown.

    Question (perf-wakeup): Does any piece of your code wake up periodically and do something even when the system is otherwise idle (no user interaction)?

    Answer: No.

    Question (perf-progress): Does your module execute any long-running tasks?

    Answer: Opening of document. It is done in RequestProcessor.

    Question (perf-huge_dialogs): Does your module contain any dialogs or wizards with a large number of GUI controls such as combo boxes, lists, trees, or text areas?

    Answer: No.

    Question (perf-menus): Does your module use dynamically updated context menus, or context-sensitive actions with complicated and slow enablement logic?

    Answer: No.

    Question (perf-spi): How the performance of the plugged in code will be enforced?

    WARNING: Question with id="perf-spi" has not been answered!

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