Class: CodeViewService (in Tools)

• Inheritance
• Description
• Related information
• Class protocol
  • accessing
  • instance creation
  • queries
  • registering
  • testing
• Instance protocol
  • accessing
  • change & update
  • event handling
  • help
  • misc
  • redrawing
  • registering
  • testing

Inheritance:

   Object
   |
   +--Tools::CodeViewService
      |
      +--Tools::BackgroundSourceProcessingService
      |
      +--Tools::BreakpointService
      |
      +--Tools::CodeCompletionService
      |
      +--Tools::CodeNavigationService
      |
      +--Tools::LintService
      |
      +--Tools::TextDiff3Tool::MergeService

Package:

stx:libtool

Category:

Interface-CodeView

Version:

rev: 1.26 date: 2019/07/31 15:48:39

user: cg

file: Tools__CodeViewService.st directory: libtool

module: stx stc-classLibrary: libtool

Author:

Jan Vrany <jan.vrany@fit.cvut.cz>

Description:

A base class for CodeView2 services. A 'service' is an extension
mechanism for CodeView2. Once plugged in, service gets informed 
about changes in the text and it also may intercept events.

See concrete subclasses how to use and implement code services.


[instance variables:]

[class variables:]

Related information:

Class protocol:

 availableServices

Tools::CodeViewService availableServices

 label

Answers a short label - for UI

 priority

Answers a priority of the service. Services with higher priority
will get the event notification before ones with lower priority.
Therefore, a lower-priority service might not get the event if high
priority service processes it

 requiredServices

Returns a list of services required for myself to work
correctly. A list should contain class names of the services
(as not all services may be loaded in)

 new

return an initialized instance

 allRequiredServicesAvailable

 isUsefulFor: aCodeView

this filters useful services.
must be redefined to return true in subclasses (but each class must do it only
for itself - not for subclasses

 registerIn: aCodeView

 isAbstract

(comment from inherited method)
Return if this class is an abstract class.
True is returned for Object here; false for subclasses.
Abstract subclasses must redefine this again.

 isAvailable

 isAvailableFor: applicationClass

Returns true if given service may be used in
given application class.

Instance protocol:

 annotationAtLine: lineNr

return the annotation for a given line - if any

 annotations

return my annotations - if any

 application

 enabled

 enabled: aBoolean

 label

 service: serviceClassName

 syntaxHighlighter

Returns a syntax highligter class or nil. The highlighting
process gather all syntaxHighlighterClasses from all services
and then use them one by one to highlight the text. Individual
services may override this method to provide additional
highliging of the source code

 update: aspect with: param from: sender

Get updated whenever something changes in the code view.
Subclasses may override this

 buttonMotion: button x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 buttonMultiPress: button x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 buttonPress: button x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 buttonRelease: button x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 keyPress: key x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 keyRelease: key x: x y: y in: view

Handles an event in given view (a subview of codeView).
If the method returns true, it has eaten the event and it will not be processed
by the view.

 linesDeletedFrom: start to: end

 linesInsertedFrom: start to: end

 linesModifiedFrom: start to: end

 viewRealized

Sent when a code view has been realized. May be overriden
by subclasses

 helpTextAtLine: aLineNr

 highlightClassVariable: name

intentionally a noop here - redefine in concrete services

 highlightInstanceVariable: name

intentionally a noop here - redefine in concrete services

 showInfo: aString

 drawAnnotationIcon: icon atX: x y: y width: w height: h ascent: fontAscent

 drawAnnotationInLine: lineNo in: view atX: x y: yBaseline width: w height: hFont ascent: fontAscent from: startCol to: endColOrNil with: fg and: bg

common code

 drawLine: lineNo in: view atX: x y: y width: w height: hFont ascent: fontAscent from: startCol to: endColOrNil with: fg and: bg

Called by both gutterView and textView (well, not yet) to
allow services to draw custom things on text view.
Ask JV what the args means if unsure (I'm lazy to document
them, now it is just an experiment...)

 redrawLine: line