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<p class="overviewlink">
<a href="overview-summary.html">Overview</a>
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<h1>NetBeans Architecture Answers for Utilities API module</h1>
<ul>
<li>
<b>Author:</b> jtulach@netbeans.org</li>
<li>
<b>Answers as of:</b> 14-Sep-2018</li>
<li>
<b>Answers for questions version:</b> 1.25</li>
<li>
<b>Latest available version of questions:</b> 1.29</li>
</ul>
<strong>
WARNING: answering questions version 1.25
rather than the current 1.29.
</strong>
<hr>
<h2>Interfaces table</h2>
<a name="group-java">
<h5>Group of java interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>UtilitiesAPI</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-UtilitiesAPI"><a href="org/openide/util/doc-files/api.html">
.../org/openide/util/doc-files/api.html</a>
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>AWTBridge</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Private">Private</a></td><td><a name="java-AWTBridge"><a href="http://www.netbeans.org/source/browse/openide/util/src/org/netbeans/modules/openide/util/AWTBridge.java">
.../modules/openide/util/AWTBridge.java</a>
<p></p>
<p></p>
a class that is looked up in <a href="../org-openide-util-lookup/org/openide/util/Lookup.html#getDefault--" shape="rect">Lookup.getDefault()</a>
and if registered can provide better UI elements for <a href="http://download.oracle.com/javase/8/docs/api/javax/swing/Action.html" shape="rect">Action</a>s.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>WeakListener.setAccessible</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="java-WeakListener.setAccessible">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
<p></p>
<a href="../org-openide-util/org/openide/util/WeakListeners.html">
.../org/openide/util/WeakListeners.html</a>
<p></p>
<p></p>
used to call the remove method using reflection
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>LookupAPI</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-LookupAPI">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
8.14
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>ParserFactory</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Private">Private</a></td><td><a name="java-ParserFactory">
<p></p>
The <a href="../org-openide-util/org/openide/xml/XMLUtil.html" shape="rect">XMLUtil</a> class is loading
a class from <code>core/core.jar</code> to initialize the correct parser factory.
This is a fix for <a href="http://www.netbeans.org/issues/show_bug.cgi?id=68942" shape="rect">issue 68942</a>.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>SharedClassObject.setAccessible</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="java-SharedClassObject.setAccessible"><a href="org/openide/util/SharedClassObject.html">
.../org/openide/util/SharedClassObject.html</a>
<p></p>
<p></p>
used to instantiate subclasses.
<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
<a name="group-property">
<h5>Group of property interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>BrandingSupport</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="property-BrandingSupport"><a href="../org-openide-util/org/openide/util/NbBundle.html">
.../org/openide/util/NbBundle.html</a>
<p></p>
<p></p>
which is similar to localization but also supports changes of resorces
for application build on top of NetBeans. This is handled by our
class <a href="../org-openide-util/org/openide/util/NbBundle.html" shape="rect">NbBundle</a> which
reimplements the JDK's standard <a href="http://download.oracle.com/javase/8/docs/api/java/util/ResourceBundle.html" shape="rect">ResourceBundle</a>
to to take branding into the consideration.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>HelpID</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Standard">Standard</a></td><td><a name="property-HelpID"><a href="org/openide/util/HelpCtx.html">org/openide/util/HelpCtx.html</a>
<p></p>
<p></p>
read from <a href="http://download.oracle.com/javase/8/docs/api/javax/swing/JComponent.html" shape="rect">JComponent</a>.getClientProperty
to simulate the standard javahelp behaviour and extract the help id for given component.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>iconBase</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Standard">Standard</a></td><td><a name="property-iconBase">
<p></p>
<a href="org/openide/util/actions/SystemAction.html" shape="rect">SystemAction</a>
reacts to expected requests from <a href="../org-openide-awt/overview-summary.html" shape="rect">UI Utilities</a>
module for <code>iconBase</code> property by returning value based on its
result of its <code>iconResource()</code> method.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>org.openide.util.SharedClassObject.initialize</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Private">Private</a></td><td><a name="property-org.openide.util.SharedClassObject.initialize">
<p></p>
For purposes of
<code>SystemOption</code>
the
<a href="org/openide/util/SharedClassObject.html" shape="rect">SharedClassObject</a>
handles
<code>getProperty ("org.openide.util.SharedClassObject.initialize")</code>
in a special way, by returning
<code>null</code> if initialization is not running and <code>Boolean.TRUE</code> if
it is.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>OpenIDE-Transmodal-Action</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="property-OpenIDE-Transmodal-Action">
<p></p>
<a href="org/openide/util/actions/CallbackSystemAction.html" shape="rect">CallbackSystemAction</a>
checks whether <code>action.getValue("OpenIDE-Transmodal-Action")</code>
returns <code>Boolean.TRUE</code> to enable it in dialogs, otherwise
the action is disabled when there is an open dialog.
<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
<a name="group-java.io.File">
<h5>Group of java.io.File interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>FileLocation</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="java.io.File-FileLocation">
<p></p>
the JAR file is located in platform cluster under <code>lib/org-openide-util.jar</code>
<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
<a name="group-lookup">
<h5>Group of lookup interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>ActionManagerInvocation</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Private">Private</a></td><td><a name="lookup-ActionManagerInvocation">
<p></p>
because of the API separation, <a href="org/openide/util/actions/CallableSystemAction.html" shape="rect">CallableSystemAction</a> uses lookup for <code>ActionsBridge</code>
provided by <code>org-openide-actions</code> module
when looking for <a href="../org-openide-actions/org/openide/actions/ActionManager.html" shape="rect">org.openide.actions.ActionManager</a> implementation.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>LookupSharedClassObject</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="lookup-LookupSharedClassObject">
<p></p>
singleton subclasses of <a href="org/openide/util/SharedClassObject.html" shape="rect">SharedClassObject</a>
are searched for using Lookup.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>LookupContextGlobalProvider</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Stable">Stable</a></td><td><a name="lookup-LookupContextGlobalProvider">
<p></p>
<a href="org/openide/util/Utilities.html#actionsGlobalContext--" shape="rect">actionsGlobalContext</a>
searches for <a href="org/openide/util/ContextGlobalProvider.html" shape="rect">ContextGlobalProvider</a> in
<a href="../org-openide-util-lookup/org/openide/util/Lookup.html#getDefault--" shape="rect">Lookup.getDefault()</a>.
The provider is usually provided by <a href="../org-openide-windows/overview-summary.html" shape="rect">window
system implementation</a>.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>LookupErrorManager</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="lookup-LookupErrorManager">
<p></p>
<a href="org/openide/ErrorManager.html" shape="rect">ErrorManager</a>
delegates its methods to all instances of <a href="org/openide/ErrorManager.html" shape="rect">ErrorManager</a>s
found in Lookup
<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
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<api-answers author="jtulach@netbeans.org" module="Utilities API" question-version="1.25">
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<api-questions version="1.29" xml:base="file:/home/nsigma/Code/NetBeans/incubator-netbeans/nbbuild/antsrc/org/netbeans/nbbuild/Arch-api-questions.xml">
<hr>
<h2>General Information</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-arch-what">Question (arch-what)</a>:</b><em>
What is this project good for?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Described in the <a href="architecture-summary.html#answer-arch-overall" shape="rect">overall</a> answer.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-overall">Question (arch-overall)</a>:</b><em>
Describe the overall architecture.
</em></font>
<p></p>
<b>Answer:</b>
<p>
This module contains general classes needed in NetBeans, extensions to
basic JRE contepts, useful methods and other
<a href="#java-UtilitiesAPI">UtilitiesAPI</a>
classes.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-usecases">Question (arch-usecases)</a>:</b><em>
Describe the main <a href="http://wiki.netbeans.org/API_Design#The_Importance_of_Being_Use_Case_Oriented" shape="rect">
use cases</a> 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?
</em></font>
<p></p>
<b>Answer:</b>
<h4>How shall I do or influence logging in NetBeans?</h4>
<p>
If you are interested in logging from inside your module, or in writing
your own log handler or in configuring the whole system, then best place
to start is the <a href="org/openide/util/doc-files/logging.html" shape="rect">NetBeans logging guide</a>.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-time">Question (arch-time)</a>:</b><em>
What are the time estimates of the work?
</em></font>
<p></p>
<b>Answer:</b>
<p>
The module has been around since 1997 and is still improved
from time to time.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-quality">Question (arch-quality)</a>:</b><em>
How will the <a href="http://www.netbeans.org/community/guidelines/q-evangelism.html" shape="rect">quality</a>
of your code be tested and
how are future regressions going to be prevented?
</em></font>
<p></p>
<b>Answer:</b>
<p>
There is a lot of unit tests in
<a href="http://hg.netbeans.org/main-golden/openide.util/test/unit/src/" shape="rect">version control</a>
system.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-where">Question (arch-where)</a>:</b><em>
Where one can find sources for your module?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<p>
The sources for the module are in the
<a href="http://hg.netbeans.org/" shape="rect">NetBeans Mercurial repositories</a>.
</p>
</p>
</ul>
<hr>
<h2>Project and platform dependencies</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-dep-nb">Question (dep-nb)</a>:</b><em>
What other NetBeans projects and modules does this one depend on?
</em></font>
<p></p>
<b>Answer:</b>
<p>
This module is independent of other NetBeans modules and can be used
independently. For better interaction with UI parts of NetBeans it however
indirectly communicates with <a href="../org-openide-awt/overview-summary.html" shape="rect">UI Utilities</a>
module using <a href="#java-AWTBridge">AWTBridge</a>
-
a class that is looked up in <a href="../org-openide-util-lookup/org/openide/util/Lookup.html#getDefault--" shape="rect">Lookup.getDefault()</a>
and if registered can provide better UI elements for <a href="http://download.oracle.com/javase/8/docs/api/javax/swing/Action.html" shape="rect">Action</a>s.
</p>
<p>The default answer to this question is:<!--If you do not want default answer to be generated you can use <defaultanswer generate='none' /> here--><br>
<p>
<p>
These modules are required in project.xml:
<!--<li><api type='import' group='java' category='devel' name='WeakListener.setAccessible'>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='official' name='LookupAPI'>
The module is needed for compilation.
The module is used during runtime.
Specification version
8.14
is required.
</api>
</li>
--><ul>
<li>
<a href="#java-WeakListener.setAccessible">WeakListener.setAccessible</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</li>
<li>
<a href="#java-LookupAPI">LookupAPI</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
8.14
is required.
</li>
</ul>
</p>
</p>
</p>
<p></p>
<font color="gray"><b><a name="answer-dep-non-nb">Question (dep-non-nb)</a>:</b><em>
What other projects outside NetBeans does this one depend on?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Reexports XML APIs so needs some XML parser implementation, but as one
is provided in any 1.4 java, it in fact has no dependencies except on JRE.
</p>
<p></p>
<font color="gray"><b><a name="answer-dep-platform">Question (dep-platform)</a>:</b><em>
On which platforms does your module run? Does it run in the same
way on each?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Platform independent.
</p>
<p></p>
<font color="gray"><b><a name="answer-dep-jre">Question (dep-jre)</a>:</b><em>
Which version of JRE do you need (1.2, 1.3, 1.4, etc.)?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Currently JRE 1.4 is needed.
</p>
<p></p>
<font color="gray"><b><a name="answer-dep-jrejdk">Question (dep-jrejdk)</a>:</b><em>
Do you require the JDK or is the JRE enough?
</em></font>
<p></p>
<b>Answer:</b>
<p>
JRE is enough.
</p>
</ul>
<hr>
<h2>Deployment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-deploy-jar">Question (deploy-jar)</a>:</b><em>
Do you deploy just module JAR file(s) or other files as well?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="#java.io.File-FileLocation">FileLocation</a>
-
the JAR file is located in platform cluster under <code>lib/org-openide-util.jar</code>
.
</p>
<p></p>
<font color="gray"><b><a name="answer-deploy-nbm">Question (deploy-nbm)</a>:</b><em>
Can you deploy an NBM via the Update Center?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No reason to not deploy nbm.
</p>
<p></p>
<font color="gray"><b><a name="answer-deploy-shared">Question (deploy-shared)</a>:</b><em>
Do you need to be installed in the shared location only, or in the user directory only,
or can your module be installed anywhere?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Module is on real java classpath and as such it has to be in the shared directory.
</p>
<p></p>
<font color="gray"><b><a name="answer-deploy-packages">Question (deploy-packages)</a>:</b><em>
Are packages of your module made inaccessible by not declaring them
public?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Yes, public packages declared.
</p>
<p></p>
<font color="gray"><b><a name="answer-deploy-dependencies">Question (deploy-dependencies)</a>:</b><em>
What do other modules need to do to declare a dependency on this one,
in addition to or instead of the normal module dependency declaration
(e.g. tokens to require)?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Nothing.
</p>
</ul>
<hr>
<h2>Compatibility with environment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-compat-i18n">Question (compat-i18n)</a>:</b><em>
Is your module correctly internationalized?
</em></font>
<p></p>
<b>Answer:</b>
<p>
There is not much things to localize in this module, so it is properly localized.
But it is good to note that the module adds <a href="#property-BrandingSupport">BrandingSupport</a>
-
which is similar to localization but also supports changes of resorces
for application build on top of NetBeans. This is handled by our
class <a href="../org-openide-util/org/openide/util/NbBundle.html" shape="rect">NbBundle</a> which
reimplements the JDK's standard <a href="http://download.oracle.com/javase/8/docs/api/java/util/ResourceBundle.html" shape="rect">ResourceBundle</a>
to to take branding into the consideration.
.
</p>
<p></p>
<font color="gray"><b><a name="answer-compat-standards">Question (compat-standards)</a>:</b><em>
Does the module implement or define any standards? Is the
implementation exact or does it deviate somehow?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>compat-standards</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-compat-version">Question (compat-version)</a>:</b><em>
Can your module coexist with earlier and future
versions of itself? Can you correctly read all old settings? Will future
versions be able to read your current settings? Can you read
or politely ignore settings stored by a future version?
</em></font>
<p></p>
<b>Answer:</b>
<p>
This module has no settings.
</p>
<p></p>
<font color="gray"><b><a name="answer-compat-deprecation">Question (compat-deprecation)</a>:</b><em>
How the introduction of your project influences functionality
provided by previous version of the product?
</em></font>
<p></p>
<b>Answer:</b>
<p>
XXX no answer for compat-deprecation
</p>
</ul>
<hr>
<h2>Access to resources</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-resources-file">Question (resources-file)</a>:</b><em>
Does your module use <code>java.io.File</code> directly?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-resources-layer">Question (resources-layer)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-resources-read">Question (resources-read)</a>:</b><em>
Does your module read any resources from layers? For what purpose?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-resources-mask">Question (resources-mask)</a>:</b><em>
Does your module mask/hide/override any resources provided by other modules in
their layers?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-resources-preferences">Question (resources-preferences)</a>:</b><em>
Does your module uses preferences via Preferences API? Does your module use NbPreferences or
or regular JDK Preferences ? Does it read, write or both ?
Does it share preferences with other modules ? If so, then why ?
</em></font>
<p></p>
<b>Answer:</b>
<p>
XXX no answer for resources-preferences
</p>
</ul>
<hr>
<h2>Lookup of components</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-lookup-lookup">Question (lookup-lookup)</a>:</b><em>
Does your module use <code>org.openide.util.Lookup</code>
or any similar technology to find any components to communicate with? Which ones?
</em></font>
<p></p>
<b>Answer:</b>
<ul>
<li>
<a href="#lookup-LookupSharedClassObject">LookupSharedClassObject</a>
-
singleton subclasses of <a href="org/openide/util/SharedClassObject.html" shape="rect">SharedClassObject</a>
are searched for using Lookup.
.</li>
<li>
<a href="#lookup-LookupContextGlobalProvider">LookupContextGlobalProvider</a>
-
<a href="org/openide/util/Utilities.html#actionsGlobalContext--" shape="rect">actionsGlobalContext</a>
searches for <a href="org/openide/util/ContextGlobalProvider.html" shape="rect">ContextGlobalProvider</a> in
<a href="../org-openide-util-lookup/org/openide/util/Lookup.html#getDefault--" shape="rect">Lookup.getDefault()</a>.
The provider is usually provided by <a href="../org-openide-windows/overview-summary.html" shape="rect">window
system implementation</a>.
.</li>
<!-- <li><api name="LookupEntityCatalog" category="devel" group="lookup" type="export">
<a href="../org-openide-util/org/openide/xml/EntityCatalog.html">EntityCatalog</a>
delegates its methods to all instances of <a href="../org-openide-util/org/openide/xml/EntityCatalog.html">EntityCatalog</a>s
found in Lookup
</api>.</li>-->
<li>
<a href="#lookup-LookupErrorManager">LookupErrorManager</a>
-
<a href="org/openide/ErrorManager.html" shape="rect">ErrorManager</a>
delegates its methods to all instances of <a href="org/openide/ErrorManager.html" shape="rect">ErrorManager</a>s
found in Lookup
.</li>
<!-- <li><api name="LookupClassLoader" category="devel" group="lookup" type="export">
Nearly all resource looking functions and reflective code
uses <a href="http://download.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html">ClassLoader</a>
obtained from <a href="../org-openide-util-lookup/org/openide/util/Lookup.html#getDefault()">Lookup.getDefault()</a>
for loading system wide resources.
</api>.</li>-->
</ul>
<p></p>
<font color="gray"><b><a name="answer-lookup-register">Question (lookup-register)</a>:</b><em>
Do you register anything into lookup for other code to find?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-lookup-remove">Question (lookup-remove)</a>:</b><em>
Do you remove entries of other modules from lookup?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
</ul>
<!-- classification of interfaces -->
<!-- package names -->
<hr>
<h2>Execution Environment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-exec-property">Question (exec-property)</a>:</b><em>
Is execution of your code influenced by any environment or
Java system (<code>System.getProperty</code>) property?
On a similar note, is there something interesting that you
pass to <code>java.util.logging.Logger</code>? Or do you observe
what others log?
</em></font>
<p></p>
<b>Answer:</b>
<!-- <ul>
<li><api type="export" group="systemproperty" name="netbeans.screen.insets" category="private">
Influences results of Utilities.getUsableScreenBounds</api>.</li>
<li><api type="export" group="systemproperty" name="netbeans.taskbar.height" category="private">
Influences results of Utilities.getUsableScreenBounds</api>.</li>
<li>
<api type='import' group="systemproperty" name="line.separator" category="standard" >
used on few places
</api>.
</li>
<li><api type="export" group="systemproperty" name="org.openide.util.RequestProcessor.inactiveTime" category="private">
Specifies the time in ms unused <a href="../org-openide-util/org/openide/util/RequestProcessor.html">RequestProcessor</a>
processor threads remain around, until
they get GCed. By default 60s. Primarily used from tests.</api></li>
</ul>-->
<p></p>
<font color="gray"><b><a name="answer-exec-component">Question (exec-component)</a>:</b><em>
Is execution of your code influenced by any (string) property
of any of your components?
</em></font>
<p></p>
<b>Answer:</b>
<ul>
<li>
<a href="#property-HelpID">HelpID</a>
-
read from <a href="http://download.oracle.com/javase/8/docs/api/javax/swing/JComponent.html" shape="rect">JComponent</a>.getClientProperty
to simulate the standard javahelp behaviour and extract the help id for given component.
</li>
<li>
<a href="#property-iconBase">iconBase</a>
-
<a href="org/openide/util/actions/SystemAction.html" shape="rect">SystemAction</a>
reacts to expected requests from <a href="../org-openide-awt/overview-summary.html" shape="rect">UI Utilities</a>
module for <code>iconBase</code> property by returning value based on its
result of its <code>iconResource()</code> method.
</li>
<li>
<a href="#property-org.openide.util.SharedClassObject.initialize">org.openide.util.SharedClassObject.initialize</a>
-
For purposes of
<code>SystemOption</code>
the
<a href="org/openide/util/SharedClassObject.html" shape="rect">SharedClassObject</a>
handles
<code>getProperty ("org.openide.util.SharedClassObject.initialize")</code>
in a special way, by returning
<code>null</code> if initialization is not running and <code>Boolean.TRUE</code> if
it is.
</li>
<li>
<a href="#property-OpenIDE-Transmodal-Action">OpenIDE-Transmodal-Action</a>
-
<a href="org/openide/util/actions/CallbackSystemAction.html" shape="rect">CallbackSystemAction</a>
checks whether <code>action.getValue("OpenIDE-Transmodal-Action")</code>
returns <code>Boolean.TRUE</code> to enable it in dialogs, otherwise
the action is disabled when there is an open dialog.
</li>
</ul>
<p></p>
<font color="gray"><b><a name="answer-exec-ant-tasks">Question (exec-ant-tasks)</a>:</b><em>
Do you define or register any ant tasks that other can use?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-classloader">Question (exec-classloader)</a>:</b><em>
Does your code create its own class loader(s)?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No, we do not create own classloader.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-reflection">Question (exec-reflection)</a>:</b><em>
Does your code use Java Reflection to execute other code?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="#java-SharedClassObject.setAccessible">SharedClassObject.setAccessible</a>
-
used to instantiate subclasses.
.
<a href="#java-WeakListener.setAccessible">WeakListener.setAccessible</a>
-
used to call the remove method using reflection
.
<a href="#lookup-ActionManagerInvocation">ActionManagerInvocation</a>
-
because of the API separation, <a href="org/openide/util/actions/CallableSystemAction.html" shape="rect">CallableSystemAction</a> uses lookup for <code>ActionsBridge</code>
provided by <code>org-openide-actions</code> module
when looking for <a href="../org-openide-actions/org/openide/actions/ActionManager.html" shape="rect">org.openide.actions.ActionManager</a> implementation.
.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-privateaccess">Question (exec-privateaccess)</a>:</b><em>
Are you aware of any other parts of the system calling some of
your methods by reflection?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-process">Question (exec-process)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No external processes executed.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-introspection">Question (exec-introspection)</a>:</b><em>
Does your module use any kind of runtime type information (<code>instanceof</code>,
work with <code>java.lang.Class</code>, etc.)?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="org/openide/util/Utilities.html" shape="rect">Utilities</a> provide wrapper
for java beans introspection. <a href="#java-ParserFactory">ParserFactory</a>
-
The <a href="../org-openide-util/org/openide/xml/XMLUtil.html" shape="rect">XMLUtil</a> class is loading
a class from <code>core/core.jar</code> to initialize the correct parser factory.
This is a fix for <a href="http://www.netbeans.org/issues/show_bug.cgi?id=68942" shape="rect">issue 68942</a>.
</p>
<p></p>
<font color="gray"><b><a name="answer-exec-threading">Question (exec-threading)</a>:</b><em>
What threading models, if any, does your module adhere to? How the
project behaves with respect to threading?
</em></font>
<p></p>
<b>Answer:</b>
<p>
XXX no answer for exec-threading
</p>
<p></p>
<font color="gray"><b><a name="answer-security-policy">Question (security-policy)</a>:</b><em>
Does your functionality require modifications to the standard policy file?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No security permissions manipulated.
</p>
<p></p>
<font color="gray"><b><a name="answer-security-grant">Question (security-grant)</a>:</b><em>
Does your code grant additional rights to some other code?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No security permitions manipulated.
</p>
</ul>
<hr>
<h2>Format of files and protocols</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-format-types">Question (format-types)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<!-- The <a href="http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#Provider%20Configuration%20File">META-INF/services/...</a> files.
<api name="TranslateNames" category="official" type="export" group="java.io.File"
url="org/openide/util/Utilities.html#translate(java.lang.String)">
<a href="org/openide/util/Utilities.html#translate(java.lang.String)">Utilities.translate</a>
reads <code>META-INF/netbeans/translate.names</code> files from JARs</api>.-->
</p>
<p></p>
<font color="gray"><b><a name="answer-format-dnd">Question (format-dnd)</a>:</b><em>
Which protocols (if any) does your code understand during Drag &amp; Drop?
</em></font>
<p></p>
<b>Answer:</b>
<p>
The same as for clipboard.
</p>
<p></p>
<font color="gray"><b><a name="answer-format-clipboard">Question (format-clipboard)</a>:</b><em>
Which data flavors (if any) does your code read from or insert to
the clipboard (by access to clipboard on means calling methods on <code>java.awt.datatransfer.Transferable</code>?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="org/openide/util/datatransfer/MultiTransferObject.html" shape="rect">MultiTransferObject</a> can be
used in <a href="http://download.oracle.com/javase/8/docs/api/java/awt/datatransfer/Transferable.html" shape="rect">Transferable</a> to represent content
composed of multiple independent
<a href="http://download.oracle.com/javase/8/docs/api/java/awt/datatransfer/Transferable.html" shape="rect">Transferable</a>s.
</p>
</ul>
<hr>
<h2>Performance and Scalability</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-perf-startup">Question (perf-startup)</a>:</b><em>
Does your module run any code on startup?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-exit">Question (perf-exit)</a>:</b><em>
Does your module run any code on exit?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Nothing.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-scale">Question (perf-scale)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Lookup code scales linearily.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-limit">Question (perf-limit)</a>:</b><em>
Are there any hard-coded or practical limits in the number or size of
elements your code can handle?
</em></font>
<p></p>
<b>Answer:</b>
<p>
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-mem">Question (perf-mem)</a>:</b><em>
How much memory does your component consume? Estimate
with a relation to the number of windows, etc.
</em></font>
<p></p>
<b>Answer:</b>
<p>
There are no big data structures.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-wakeup">Question (perf-wakeup)</a>:</b><em>
Does any piece of your code wake up periodically and do something
even when the system is otherwise idle (no user interaction)?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-progress">Question (perf-progress)</a>:</b><em>
Does your module execute any long-running tasks?
</em></font>
<p></p>
<b>Answer:</b>
<p>
Actions declared as <a href="org/openide/util/actions/CallableSystemAction.html#asynchronous--" shape="rect">CallableSystemAction.asynchronous()</a>
are executed outside of AWT thread on a dedicated request processor one.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-huge_dialogs">Question (perf-huge_dialogs)</a>:</b><em>
Does your module contain any dialogs or wizards with a large number of
GUI controls such as combo boxes, lists, trees, or text areas?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-menus">Question (perf-menus)</a>:</b><em>
Does your module use dynamically updated context menus, or
context-sensitive actions with complicated and slow enablement logic?
</em></font>
<p></p>
<b>Answer:</b>
<p>
There are no menus.
</p>
<p></p>
<font color="gray"><b><a name="answer-perf-spi">Question (perf-spi)</a>:</b><em>
How the performance of the plugged in code will be enforced?
</em></font>
<p></p>
<b>Answer:</b>
<p>
No enforcing is done.
</p>
</ul>
<!-- security -->
<!-- recovery -->
</api-questions>
<!--
<question id="exec-component" when="impl">
Is execution of your code influenced by any (string) property
of any of your components?
<hint>
Often <code>JComponent.getClientProperty</code>, <code>Action.getValue</code>
or <code>PropertyDescriptor.getValue</code>, etc. are used to influence
a behavior of some code. This of course forms an interface that should
be documented. Also if one depends on some interface that an object
implements (<code>component instanceof Runnable</code>) that forms an
API as well.
</hint>
</question>
-->
<!--
<question id="exec-introspection" when="impl">
Does your module use any kind of runtime type information (<code>instanceof</code>,
work with <code>java.lang.Class</code>, etc.)?
<hint>
Check for cases when you have an object of type A and you also
expect it to (possibly) be of type B and do some special action. That
should be documented. The same applies on operations in meta-level
(Class.isInstance(...), Class.isAssignableFrom(...), etc.).
</hint>
</question>
-->
<!--
<question id="exec-reflection" when="impl">
Does your code use Java Reflection to execute other code?
<hint>
This usually indicates a missing or insufficient API in the other
part of the system. If the other side is not aware of your dependency
this contract can be easily broken.
</hint>
</question>
-->
<!--
<question id="exec-threading" when="impl">
What threading models, if any, does your module adhere to?
<hint>
If your module calls foreign APIs which have a specific threading model,
indicate how you comply with the requirements for multithreaded access
(synchronization, mutexes, etc.) applicable to those APIs.
If your module defines any APIs, or has complex internal structures
that might be used from multiple threads, declare how you protect
data against concurrent access, race conditions, deadlocks, etc.,
and whether such rules are enforced by runtime warnings, errors, assertions, etc.
Examples: a class might be non-thread-safe (like Java Collections); might
be fully thread-safe (internal locking); might require access through a mutex
(and may or may not automatically acquire that mutex on behalf of a client method);
might be able to run only in the event queue; etc.
Also describe when any events are fired: synchronously, asynchronously, etc.
Ideas: <a href="http://core.netbeans.org/proposals/threading/index.html#recommendations">Threading Recommendations</a> (in progress)
</hint>
</question>
-->
<!--
<question id="lookup-register" when="final">
Do you register anything into lookup for other code to find?
<hint>
Do you register using layer file or using <code>META-INF/services</code>?
Who is supposed to find your component?
</hint>
</question>
-->
<!--
<question id="lookup-remove" when="final">
Do you remove entries of other modules from lookup?
<hint>
Why? Of course, that is possible, but it can be dangerous. Is the module
your are masking resource from aware of what you are doing?
</hint>
</question>
-->
<!--
<question id="perf-exit" when="final">
Does your module run any code on exit?
</question>
-->
<!--
<question id="perf-huge_dialogs" when="final">
Does your module contain any dialogs or wizards with a large number of
GUI controls such as combo boxes, lists, trees, or text areas?
</question>
-->
<!--
<question id="perf-limit" when="init">
Are there any hard-coded or practical limits in the number or size of
elements your code can handle?
</question>
-->
<!--
<question id="perf-mem" when="final">
How much memory does your component consume? Estimate
with a relation to the number of windows, etc.
</question>
-->
<!--
<question id="perf-menus" when="final">
Does your module use dynamically updated context menus, or
context-sensitive actions with complicated and slow enablement logic?
<hint>
If you do a lot of tricks when adding actions to regular or context menus, you can significantly
slow down display of the menu, even when the user is not using your action. Pay attention to
actions you add to the main menu bar, and to context menus of foreign nodes or components. If
the action is conditionally enabled, or changes its display dynamically, you need to check the
impact on performance. In some cases it may be more appropriate to make a simple action that is
always enabled but does more detailed checks in a dialog if it is actually run.
</hint>
</question>
-->
<!--
<question id="perf-progress" when="final">
Does your module execute any long-running tasks?
<hint>Long running tasks should never block
AWT thread as it badly hurts the UI
<a href="http://performance.netbeans.org/responsiveness/issues.html">
responsiveness</a>.
Tasks like connecting over
network, computing huge amount of data, compilation
be done asynchronously (for example
using <code>RequestProcessor</code>), definitively it should
not block AWT thread.
</hint>
</question>
-->
<!--
<question id="perf-scale" when="init">
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?
<hint>
Please include some estimates, there are other more detailed
questions to answer in later phases of implementation.
</hint>
</question>
-->
<!--
<question id="perf-spi" when="init">
How the performance of the plugged in code will be enforced?
<hint>
If you allow foreign code to be plugged into your own module, how
do you enforce that it will behave correctly and quickly and will not
negatively influence the performance of your own module?
</hint>
</question>
-->
<!--
<question id="perf-startup" when="final">
Does your module run any code on startup?
</question>
-->
<!--
<question id="perf-wakeup" when="final">
Does any piece of your code wake up periodically and do something
even when the system is otherwise idle (no user interaction)?
</question>
-->
<!--
<question id="resources-file" when="final">
Does your module use <code>java.io.File</code> directly?
<hint>
NetBeans provide a logical wrapper over plain files called
<code>org.openide.filesystems.FileObject</code> that
provides uniform access to such resources and is the preferred
way that should be used. But of course there can be situations when
this is not suitable.
</hint>
</question>
-->
<!--
<question id="resources-layer" when="final">
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?
<hint>
NetBeans allows automatic and declarative installation of resources
by module layers. Module register files into appropriate places
and other components use that information to perform their task
(build menu, toolbar, window layout, list of templates, set of
options, etc.).
</hint>
</question>
-->
<!--
<question id="resources-mask" when="final">
Does your module mask/hide/override any resources provided by other modules in
their layers?
<hint>
If you mask a file provided by another module, you probably depend
on that and do not want the other module to (for example) change
the file's name. That module shall thus make that file available as an API
of some stability category.
</hint>
</question>
-->
<!--
<question id="resources-read" when="final">
Does your module read any resources from layers? For what purpose?
<hint>
As this is some kind of intermodule dependency, it is a kind of API.
Please describe it and classify according to
<a href="http://openide.netbeans.org/tutorial/api-design.html#categories">
common stability categories</a>.
</hint>
</question>
-->
<!--
<question id="security-grant" when="final">
Does your code grant additional rights to some other code?
<hint>Avoid using a class loader that adds extra
permissions to loaded code unless really necessary.
Also note that your API implementation
can also expose unneeded permissions to enemy code by
calling AccessController.doPrivileged().</hint>
</question>
-->
<!--
<question id="security-policy" when="final">
Does your functionality require modifications to the standard policy file?
<hint>Your code might pass control to third-party code not
coming from trusted domains. This could be code downloaded over the
network or code coming from libraries that are not bundled
with NetBeans. Which permissions need to be granted to which domains?</hint>
</question>
-->
<!--
<question id="arch-where" when="init">
Where one can find sources for your module?
<hint>
Please provide link to the CVS web client at
http://www.netbeans.org/download/source_browse.html
or just use tag defaultanswer generate='here'
</hint>
</question>
-->
<!--
<question id="compat-deprecation" when="init">
How the introduction of your project influences functionality
provided by previous version of the product?
<hint>
If you are planning to deprecate/remove/change any existing APIs,
list them here accompanied with the reason explaining why you
are doing so.
</hint>
</question>
-->
<!--
<question id="resources-preferences" when="final">
Does your module uses preferences via Preferences API? Does your module use NbPreferences or
or regular JDK Preferences ? Does it read, write or both ?
Does it share preferences with other modules ? If so, then why ?
<hint>
You may use
&lt;api type="export" group="preferences"
name="preference node name" category="private"&gt;
description of individual keys, where it is used, what it
influences, whether the module reads/write it, etc.
&lt;/api&gt;
Due to XML ID restrictions, rather than /org/netbeans/modules/foo give the "name" as org.netbeans.modules.foo.
Note that if you use NbPreferences this name will then be the same as the code name base of the module.
</hint>
</question>
-->
</api-answers>
<hr>
<p><span class="footnote">Built on September 14 2018.&nbsp;&nbsp;|&nbsp;&nbsp; Copyright &#169; 2017-2018 Apache Software Foundation. All Rights Reserved.</span></p>
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