Class: StandaloneStartup

• Inheritance
• Description
• Related information
• Class protocol
  • debugging support
  • defaults
  • helpers
  • initialization
  • misc ui support
  • multiple applications support
  • multiple applications support-helpers
  • queries
  • startup
  • startup-to be redefined
• Demonstration

Inheritance:

   Object
   |
   +--StandaloneStartup
      |
      +--StandaloneStartupHeadless
      |
      +--WebServerStartup

Package:

stx:libbasic

Category:

System-Support

Version:

rev: 1.136 date: 2019/07/09 18:48:11

user: cg

file: StandaloneStartup.st directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Claus Gittinger

Description:

When smalltalk is started as IDE (stx), the show starts in Smalltalk>>start.
In contrast, when a standAlone app is linked, 
the show starts in the startup class's start method.

This class is an abstract, subclassable template for a standalone GUI-application's startup.

For your own stand alone programs, define a subclass of this, 
and redefine the #main: method there.
(of course, the other methods can also be redefined.)

Related information:

    Smalltalk
    GetOpt
    ReadEvalPrintLoop
    StandaloneStartupHeadless

Class protocol:

 dumpCoverageInformation

if the --coverage argument was given, dump that information now.
This is invoked via an exit block, when smalltalk terminates

usage example(s):

self dumpCoverageInformation

 handleCoverageMeasurementOptionsFromArguments: argv

handle the coverage measurement command line argument:
--coverage
[+/-]package: <package-pattern> ... do / do not measure in package (regex match)
[+/-]class: <class-pattern> ... do / do not measure in class (regex match, including nameSpace)
[+/-]method: <className>#<methodName> ... do / do not measure in method

adds instrumentation code to all selected methods.

usage example(s):

self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+package:' 'expeccoNET:*' '-class:' 'ExpeccoNET::ML' 'ExpeccoNET::LicenseString' ) self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+package:' 'stx:*') self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+package:' 'stx:libtool*') self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+class:' 'Tools::*' '-class:' 'Tools::StringSearchTool' ) self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+class:' 'Tools::*Browser*' ) self handleCoverageMeasurementOptionsFromArguments:#('foo' '--coverage' '+method:' 'String#at:put:' 'String#at:')

 allowCoverageMeasurementOption

enable/disable the --measureCoverage startup options.
The default is false, so standAlone apps do not support coverage measurements by default.
Can be redefined in subclasses to enable it
(but will need the libcomp and possibly the programming/oom packages to be present)

 allowDebugOption

enable/disable the --debug startup option.
Can be redefined in subclasses to enable it

 allowScriptingOption

enable/disable the --scripting startup option.
Can be redefined in subclasses to enable it

 suppressRCFileReading

enable/disable the rc-file reading (and also the --rcFileName option).
If suppressed, there is no chance to interfere with the startup.
Can be redefined in subclasses to disable it

 printInfo: msg

print an informal message using the logger

 redirectStandardStreams

redirect all output for Transcript to stderr

 verbose

true iff the program was started with --verbose flag

 verboseInfo: msg

output some message, but only if the program was started with --verbose

 initialize

Verbose := true.

 iconInBrowserSymbol
( an extension from the stx:libtool package )

the browser will use this as index into the toolbariconlibrary

 applicationRegistryPath

the key under which this application stores its process ID in the registry
as a collection of path-components.
i.e. if #('foo' 'bar' 'baz') is returned here, the current applications ID will be stored
in HKEY_CURRENT_USER\Software\foo\bar\baz\CurrentID.
(would also be used as a relative path for a temporary lock file under unix).
Used to detect if another instance of this application is already running.

** This method raises an error - it must be redefined in concrete classes **

 applicationUUID

answer an application-specific unique uuid.
This is used as the name of some exclusive OS-resource, which is used to find out,
if another instance of this application is already running.
Under win32, a mutex is used; under unix, an exclusive file in the tempDir could be used.
If redefined, please return a real UUID (i.e. UUID fromString:'.....') and not a string or
similar possibly conflicting identifier.
You can paste a fresh worldwide unique id via the editor's more-misc-paste UUID menuFunction.

** This method raises an error - it must be redefined in concrete classes **

 shouldReuseRunningApplication

answer true, if an already running application instance should be re-used

 applicationRegistryEntry

retrieve the registry entry in which (if present), any currently running application
has left its process ID

 checkForAndExitIfAnotherApplicationInstanceIsRunning

if another instance of this application is running,
send it an openFile command for my file-argument, and exit.
(i.e. the already running app gets a (processOpenPathCommand:argument) message
to ask it to open up another window).

 confirmOpenNewApplicationInstance

 currentBinaryPathKeyInRegistry

 currentIDKeyInRegistry

 getCurrentBinaryPathFromRegistry

used to check if the binary of the running instance and the attaching is the same,
if not do not attach to other version or even other installation

usage example(s):

ExpeccoStartup writeCurrentBinaryPathIntoRegistry. ExpeccoStartup getCurrentBinaryPathFromRegistry. self assert:OperatingSystem pathOfSTXExecutable = ExpeccoStartup getCurrentBinaryPathFromRegistry.

 getCurrentIDFromRegistry

|hWnd externalAddress|
hWnd := DapasXStartup getCurrentIDFromRegistry.
hWnd isEmptyOrNil ifTrue:[^ self halt.].
hWnd := hWnd asInteger.
externalAddress := ExternalAddress newAddress: hWnd.
Display raiseWindow:externalAddress.
Display setForegroundWindow:externalAddress

 getIDOfRunningApplicationFromRegistryEntry

 isAnotherApplicationInstanceRunning

answer true, if another instance of myself is currently running.
For now, it only works under win32, because it uses the underlying mutex mechanism.

 processStartupOfASecondInstance

This is executed when I have been started as a second instance of an already running application.
If I can get the currentID (i.e. windowID) of the first one and there is a command line argument with a file,
send a message (processOpenPathCommand:argument) to the main window of the already running application, to ask it for another window.
If the currentID is unknown, ask if the user wants to open a new instance of the application anyway.
Return true if the first instance has been notified, and this second instance should exit.

 releaseApplicationMutex

 sendCommand: message toWindowId: aWindowId

use the event send mechanism to forward a command to the already running application

 sendOpenPathCommand: pathName toWindowId: aWindowId

use the event send mechanism to forward an open-Path command to the already running application

 writeCurrentBinaryPathIntoRegistry

used to check if the binary of the running instance and the attaching is the same,
if not do not attach to other version or even other installation

usage example(s):

ExpeccoStartup writeCurrentBinaryPathIntoRegistry. ExpeccoStartup getCurrentBinaryPathFromRegistry. self assert:OperatingSystem pathOfSTXExecutable = ExpeccoStartup getCurrentBinaryPathFromRegistry.

 writeCurrentIDIntoRegistry: currentID

| currentID returnedCurrentID |
currentID := 999.
DapasXStartup writeCurrentIDIntoRegistry: currentID.
returnedCurrentID := DapasXStartup getCurrentIDFromRegistry.
self assert: currentID = returnedCurrentID asNumber.

 applicationName

used in verbose messages - can/should be redefined in subclasses

 commandLineArguments

 isAbstract

 isBrowserStartable

do not allow clicking on me in the browser

 keepSplashWindowOpen

if true is returned here, the splashWindow is not closed and will be still open
when the main: method is invoked. This allows for plugin-loads etc. to be shown in the
splash screen. However, my subclass's main: has to make sure that the splashScreen is closed.
(calling hideSplashWindow)
The default is false here which means that the splashWindow will be already closed when the
subclasses main: is invoked.

 patchesDirectory

answer a directory containing patches.
The directory needs not to be present.

 startupFilename

used in verbose messages - can/should be redefined in subclasses.
Only return a basename here.

usage example(s):

ExpeccoStartup startupFilename -> 'expeccoStart.rc'

 handleRCFileOptionsFromArguments: argv

handle rc-file command line arguments:
--rcFileName ......... define a startup rc-file
(defaults to <appname>Start.rc)

 handleScriptingOptionsFromArguments: argv

handle scripting command line argument:
--scripting portNr ... start a scripting server on port (or default, if missing)
--allowHost host ..... add host to the allowed scripting hosts

 loadPatch: fileName

 loadPatches

load all patches in the application's patches dir

 loadPatchesMatching: aGlobString

load the patches in the application's patches dir.
If aGlobString is not empty or nil, only patches matching the glob
pattern are loaded. E.g. '[0-9]*.chg'

 loadRemainingClassLibraries

To speedup startup, we did not load all dll's (only a subset of non-GUI dll's is present).
Now, load all skipped libs (the ones marked with '*') from modules.stx.

 possiblyCheckForNewPatchesOnServer

to be redefined in concrete applications: check for patches on a server

 removeDebugger

 removeInspector

 removeLauncher

 setupSmalltalkFromArguments: argv

handle common command line arguments:
--help ............... print usage and exit
--verbose (-V) ....... be verbose during startup
--debug .............. enable debugger & inspector
--rcFileName ......... define a startup rc-file
(defaults to <appname>Start.rc)
--scripting portNr ... start a scripting server
--allowHost host ..... add host to the allowed scripting hosts

 setupToolsForDebug

self verboseInfo:('debug enabled - CTRL-C brings you into a debugger.').

 setupToolsForNoDebug

 start

this is the default initial entry into a standalone program.
It checks for any remaining shared libraries/packages which need to be
loaded, looks for any patch-files to be applied
and then enters into main.
On systems, which allow for the same app to be started for multiple documents
(i.e. windows), when clicking on a document),
first check if there is an already running application and tell it to open
a window for the new document.

usage example(s):

to speedup startup, we did not load all dll's (only a subset of non-GUI dll's is present).

 startStartBlockProcess

 stxModulesFilename

answer the Filename of modules.stx

 usage

 usageAndExitWith: exitCode

show the usage message, then exit with given exitCode

 additionalArgumentsFromRegistry

can be redefined to fetch and return additional arguments from the registry
(or other .ini file). These are added to the beginning of the command line arguments.

 isHeadless

this is invoked early by Smalltalk>>mainStartup, to ask if I like to
have a Display or if I am a non-GUI headless application.

Redefine in subclass, if your application is a non-GUI application

 main

self main
self main:#('--info')

 main: argv

a typical main: looks like (in a subclass):

** This method raises an error - it must be redefined in concrete classes **

Demonstration:

    <yourNamehere>Startup start