Difference between revisions of "Documentation/Nightly/Developers/FAQ/Extensions"

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='''Developer FAQ: {{{1}}}'''=
 
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== What is an API Key ? ==
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See http://en.wikipedia.org/wiki/Application_programming_interface_key
 
 
 
 
 
== How to obtain an API key to submit on the extension server ? ==
 
{{:Documentation/{{documentation/version}}/Developers/Tutorials/ObtainExtensionServerApiKey}}
 
 
 
== Is --launch flag available for a MacOSX installed Slicer.app ?==
 
 
 
On MacOSx, running Slicer with the --help argument does NOT list the usual launcher related options.
 
 
 
$ ./Slicer.app/Contents/MacOS/Slicer --help
 
Usage
 
  Slicer [options]
 
 
 
  Options
 
    --, --ignore-rest                    Ignores the rest of the labeled arguments following this flag. (default: false)
 
    -h, --help                            Display available command line arguments.
 
    [...]
 
    --version                            Displays version information and exits.
 
 
 
To provide some background information, when generating the package that will be distributed, an application bundle <code>Slicer.app</code> is created. As explained [http://developer.apple.com/library/mac/#documentation/CoreFoundation/Conceptual/CFBundles/Introduction/Introduction.html here], a bundle is a directory with a standardized hierarchical structure that holds executable code and the resources used by that code. It means that since all libraries contained within a bundle are referenced relatively to the location of either the CLI or the Slicer executable, the use of launcher does NOT make sens.
 
 
 
To help fixing-up the libraries, executables and plugins so that they reference each other in a relative way, CMake provides us with the [http://www.cmake.org/cmake/help/v2.8.8/cmake.html#module:BundleUtilities BundleUtilities] module.
 
 
 
This module is used in two situations:
 
# Fixup of Slicer application itself. See [https://github.com/Slicer/Slicer/blob/master/CMake/SlicerCPack.cmake#L36-68 SlicerCPack.cmake#L36-68] and [https://github.com/Slicer/Slicer/blob/master/CMake/SlicerCPackBundleFixup.cmake.in SlicerCPackBundleFixup.cmake.in]
 
# Fixup of an extension package. See [https://github.com/Slicer/Slicer/blob/master/CMake/SlicerExtensionCPack.cmake#L126-143 SlicerExtensionCPack.cmake#L126-143] and [https://github.com/Slicer/Slicer/blob/master/CMake/SlicerExtensionCPackBundleFixup.cmake.in SlicerExtensionCPackBundleFixup.cmake.in]
 
 
 
== What is the difference between Documentation/Nightly/Modules and Documentation/Nightly/Extensions ? ==
 
 
 
As suggested by the namespace names:
 
* All module documentation pages should be located under <code>Documentation/Nightly/Modules</code>
 
* All extension documentation pages should be located under <code>Documentation/Nightly/Extensions</code>
 
 
 
 
 
For example, if an an extension named <code>DoSomethingGreat</code> bundles three modules <code>ModuleA</code>, <code>ModuleB</code> and <code>ModuleC</code>. The following pages should be created:
 
* <code>Documentation/Nightly/Extensions/DoSomethingGreat</code>
 
* <code>Documentation/Nightly/Modules/ModuleA</code>
 
* <code>Documentation/Nightly/Modules/ModuleB</code>
 
* <code>Documentation/Nightly/Modules/ModuleC</code>
 
 
 
 
 
In case your extension bundles only one module, the extension name is expected to match the module name. For example, if your extension is named <code>DoSomethingAwesome</code>, the associated module is expected to be named <code>DoSomethingAwesome</code>. The following pages will then be created:
 
* <code>Documentation/Nightly/Extensions/DoSomethingAwesome</code>
 
* <code>Documentation/Nightly/Modules/DoSomethingAwesome</code>
 
where page <code>Extensions/DoSomethingAwesome</code> redirect to page <code>Modules/DoSomethingAwesome</code>.
 
 
 
 
 
To setup a redirection, simply add the following text to page <code>Extensions/DoSomethingAwesome</code>:
 
<pre>
 
#REDIRECT [[Documentation/Nightly/Modules/DoSomethingAwesome]]
 
</pre>
 
For an example, see [http://www.slicer.org/slicerWiki/index.php?title=Documentation/Nightly/Extensions/SkullStripper&action=edit here]
 
 
 
More details about redirection are available here: http://www.mediawiki.org/wiki/Help:Redirects
 
 
 
== Which URL should be associated with EXTENSION_HOMEPAGE metadata ? ==
 
 
 
Extensions available through the Slicer Extensions Catalog are expected to have a page created under the <code>Nightly</code> documentation namespace. The corresponding URL should be associated with the <code>EXTENSION_HOMEPAGE</code> metadata.
 
 
 
For example:
 
* <code><nowiki>set(EXTENSION_HOMEPAGE "http://slicer.org/slicerWiki/index.php/Documentation/Nightly/Extensions/DoSomethingGreat")</nowiki></code>
 
* <code><nowiki>set(EXTENSION_HOMEPAGE "http://slicer.org/slicerWiki/index.php/Documentation/Nightly/Extensions/DoSomethingAwesome")</nowiki></code>
 
 
 
Note that this also apply for extension bundling only one module. Indeed, in this case the page will redirect to the appropriate module page. For example: http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Extensions/SkullStripper
 

Latest revision as of 05:54, 2 September 2021

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