<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE api-answers PUBLIC "-//NetBeans//DTD Arch Answers//EN" "../nbbuild/antsrc/org/netbeans/nbbuild/Arch.dtd" [

  <!ENTITY api-questions SYSTEM "../nbbuild/antsrc/org/netbeans/nbbuild/Arch-api-questions.xml">

]>

<api-answers

  question-version="1.29"

  author="jhavlin@netbeans.org"

>

<!-- This file was based on arch.xml file in module openide.io. -->

  &api-questions;

    <!--

            <question id="arch-overall" when="init">

                Describe the overall architecture.

                <hint>

                What will be API for

                <a href="http://wiki.netbeans.org/API_Design#Separate_API_for_clients_from_support_API">

                    clients and what support API</a>?

                What parts will be pluggable?

                How will plug-ins be registered? Please use <code>&lt;api type="export"/&gt;</code>

                to describe your general APIs and specify their

                <a href="http://wiki.netbeans.org/API_Stability#Private">

                stability categories</a>.

                If possible please provide simple diagrams.

                </hint>

            </question>

    -->

    <answer id="arch-overall">

        <api

            name="NbInputOutputAPI"

            group="java"

            type="export"

            category="official"

            url="@org-netbeans-api-io@/org/netbeans/api/io/package-summary.html"

        >

            <p>

                The module contains APIs for creating output panes (e.g. output tabs in Output Window in the IDE)

                and for writing data into them. It also supports some advanced techniques, e.g. color text,

                hyperlinks, code folding, scrolling to stored positions.

            </p>

        </api>

        <api

            name="NbInputOutputSPI"

            group="java"

            type="export"

            category="official"

            url="@org-netbeans-api-io@/org/netbeans/spi/io/package-summary.html"

        >

            <p>

                SPI for providing custom implementations of output window is also included in this module, in package

                <code>org.netbeans.spi.io</code>

            </p>

        </api>

    </answer>

    <!--

            <question id="arch-quality" when="init">

                How will the <a href="http://www.netbeans.org/community/guidelines/q-evangelism.html">quality</a>

                of your code be tested and

                how are future regressions going to be prevented?

                <hint>

                What kind of testing do

                you want to use? How much functionality, in which areas,

                should be covered by the tests? How you find out that your

                project was successful?

                </hint>

            </question>

    -->

    <answer id="arch-quality">

        <p>

            Unit test will be prepared for invocable code in API classes. But most of the

            code is just definition of API and SPI.

        </p>

    </answer>

    <!--

            <question id="arch-time" when="init">

                What are the time estimates of the work?

                <hint>

                Please express your estimates of how long the design, implementation,

                stabilization are likely to last. How many people will be needed to

                implement this and what is the expected milestone by which the work should be

                ready?

                </hint>

            </question>

    -->

    <answer id="arch-time">

        <p>

            The design, implementation, preparing unit tests and reviews will

            probably take several weeks.

        </p>

    </answer>

<!--

        <question id="arch-usecases" when="init">

            <hint>

                Content of this answer will be displayed as part of page at

                http://www.netbeans.org/download/dev/javadoc/usecases.html

                You can use tags <usecase name="name> regular html description </usecase>

                and if you want to use an URL you can prefix if with @TOP@ to begin

                at the root of your javadoc

            </hint>

                Describe the main <a href="http://wiki.netbeans.org/API_Design#The_Importance_of_Being_Use_Case_Oriented">

                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?

            </question>

    -->

    <answer id="arch-usecases">

        <usecase id="print" name="Print a simple output to a new output tab">

            <p>

                The basic use-case is printing a simple text, e.g. text output of an application,

                into a dedicated pane in the UI, e.g. a tab in Output Window in the IDE.

            </p>

            <pre>

    InputOutput io = InputOutput.get("UseCase1", true);

    io.getOut().println("This is a simple output");

    io.getOut().close();

            </pre>

        </usecase>

        <usecase id="printUriHyperlink" name="Reuse existing tab and print a line containing a hyperlink for a URI">

            <p>

                Implementations can support hyperlinks. If the hyperlink is defined by a URI,

                it will be opened by the UI part of the application when the hyperlink is clicked

                in the output window. The following example will open a file and place the cursor

                at line and column specified by query part of the URI (after question mark).

            </p>

            <pre>

    InputOutput io = InputOutput.get("UseCase2", false);

    io.getOut().print("A line containing a ");

    io.getOut().print("hyperlink", Hyperlink.forURI(new URI("file://n:/test/Test.java?line=4&col=2")));

    io.getOut().println(" for a URI.");

    io.getOut().close();

            </pre>

        </usecase>

        <usecase id="printOnClickHyperlink" name="Print a line with hyperlink for invocation of arbitrary code">

            <p>

                Hyperlinks can be also used to invoke some code when clicked.

            </p>

            <pre>

    InputOutput io = InputOutput.get("UseCase3", true);

    io.getOut().print("A line containing a ");

    io.getOut().print("hyperlink", Hyperlink.onClick(new Runnable() {

        public void run() {

            System.gc();

        }

    }));

    io.getOut().println(" for invocation of custom code.");

    io.getOut().close();

            </pre>

        </usecase>

        <usecase id="printColor" name="Print color text">

            <p>

                Print a color text. Users can select a predefined color for

                common cases (debug, warning, failure, success), or custom

                color specified as RGB value.

            </p>

            <pre>

    InputOutput io = InputOutput.get("UseCase4", true);

    io.getOut().println("Let's print some info", OutputColor.debug());

    io.getOut().println("or warning with appropriate color", OutputColor.warning());

    io.getOut().println("Maybe also text with custom reddish color", OutputColor.rgb(255, 16, 16));

    io.getOut().close();

            </pre>

        </usecase>

        <usecase id="printAndReset" name="Reset an InputOutput to clear all previosly printed text">

            <p>

                It is possible to reuse already created output pane and clear

                all the previously printed text if it is not needed any more.

            </p>

            <pre>

    InputOutput io = InputOutput.get("UseCase5", true);

    io.getOut().println("Let's print some text");

    io.getErr().println("and reset the pane immediately.");

    io.reset();

    io.getOut().println("The pane is now empty and we can reuse it simply");

    io.getOut().close();

            </pre>

        </usecase>

    </answer>

    <!--

            <question id="arch-what" when="init">

                What is this project good for?

                <hint>

                Please provide here a few lines describing the project, 

                what problem it should solve, provide links to documentation, 

                specifications, etc.

                </hint>

            </question>

    -->

    <answer id="arch-what">

        <p>

            The Input/Output API and SPI is a small module

            which contains <code>InputOutput</code> and related interfaces used in

            driving the Output Window.

        </p>

        <p>

            The normal implementation is <code>org.netbeans.core.output2</code>.

        </p>

    </answer>

    <!--

            <question id="arch-where" when="impl">

                Where one can find sources for your module?

                <hint>

                    Please provide link to the Hg web client at

                    http://hg.netbeans.org/

                    or just use tag defaultanswer generate='here'

                </hint>

            </question>

    -->

    <answer id="arch-where">

        <defaultanswer generate='here' />

    </answer>

    <!--

            <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>

    -->

    <answer id="compat-deprecation">

        <p>

            Backward compatibility of other modules is not broken.

        </p>

        <p>

            This module should replace original I/O API module

            <code>org.openide.io</code>, which has the same goals, but which is

            not UI independent, and which is difficult to extend.

        </p>

    </answer>

    <!--

            <question id="compat-i18n" when="impl">

                Is your module correctly internationalized?

                <hint>

                Correct internationalization means that it obeys instructions

                at <a href="http://www.netbeans.org/download/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/i18n-branding.html">

                NetBeans I18N pages</a>.

                </hint>

            </question>

    -->

    <answer id="compat-i18n">

        <p>

            Yes. There is not much to internationalize.

        </p>

    </answer>

    <!--

            <question id="compat-standards" when="init">

                Does the module implement or define any standards? Is the 

                implementation exact or does it deviate somehow?

            </question>

    -->

    <answer id="compat-standards">

        <p>

            The module defines an API.

        </p>

    </answer>

    <!--

        <question id="compat-version" when="impl">

            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?

                <hint>

                Very helpful for reading settings is to store version number

                there, so future versions can decide whether how to read/convert

                the settings and older versions can ignore the new ones.

                </hint>

            </question>

    -->

    <answer id="compat-version">

        <p>

            N/A. No settings are read or written by this module.

        </p>

    </answer>

    <!--

            <question id="dep-jre" when="final">

                Which version of JRE do you need (1.2, 1.3, 1.4, etc.)?

                <hint>

                It is expected that if your module runs on 1.x that it will run 

                on 1.x+1 if no, state that please. Also describe here cases where

                you run different code on different versions of JRE and why.

                </hint>

            </question>

    -->

    <answer id="dep-jre">

        1.7

    </answer>

    <!--

            <question id="dep-jrejdk" when="final">

                Do you require the JDK or is the JRE enough?

            </question>

    -->

    <answer id="dep-jrejdk">

        JRE

    </answer>

    <!--

            <question id="dep-nb" when="init">

                What other NetBeans projects and modules does this one depend on?

                <hint>

                Depending on other NetBeans projects influnces the ability of

                users of your work to customize their own branded version of

                NetBeans by enabling and disabling some modules. Too

                much dependencies restrict this kind of customization. If that

                is your case, then you may want to split your functionality into

                pieces of autoload, eager and regular modules which can be

                enabled independently. Usually the answer to this question

                is generated from your <code>project.xml</code> file, but

                if it is not guessed correctly, you can suppress it by

                specifying <defaultanswer generate="none"/> and

                write here your own. Please describe such projects as imported APIs using

                the <code>&lt;api name="identification" type="import or export" category="stable" url="where is the description" /&gt;</code>.

                By doing this information gets listed in the summary page of your

                javadoc.

                </hint>

            </question>

    -->

    <answer id="dep-nb">

        <defaultanswer generate='here' />

    </answer>

<!--

        <question id="dep-non-nb" when="init">

            What other projects outside NetBeans does this one depend on?

                <hint>

                Depending on 3rd party libraries is always problematic,

                especially if they are not open source, as that complicates

                the licensing scheme of NetBeans. Please enumerate your

                external dependencies here, so it is correctly understood since

                the begining what are the legal implications of your project.

                Also please note that

                some non-NetBeans projects are packaged as NetBeans modules

                (see <a href="http://libs.netbeans.org/">libraries</a>) and

                it is preferred to use this approach when more modules may

                depend and share such third-party libraries.

                </hint>

            </question>

    -->

    <answer id="dep-non-nb">

        None.

    </answer>

    <!--

            <question id="dep-platform" when="init">

                On which platforms does your module run? Does it run in the same

                way on each?

                <hint>

                If you plan any dependency on OS or any usage of native code,

                please describe why you are doing so and describe how you envision

                to enforce the portability of your code.

                Please note that there is a support for <a href="http://www.netbeans.org/download/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/api.html#how-os-specific">OS conditionally

                enabled modules</a> which together with autoload/eager modules

                can allow you to enable to provide the best OS aware support

                on certain OSes while providing compatibility bridge on the not

                supported ones.

                Also please list the supported

                OSes/HW platforms and mentioned the lovest version of JDK required

                for your project to run on. Also state whether JRE is enough or

                you really need JDK.

                </hint>

            </question>

    -->

    <answer id="dep-platform">

        Any.

    </answer>

    <!--

            <question id="deploy-dependencies" when="final">

                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)?

                <hint>

                    Provide a sample of the actual lines you would add to a module manifest

                    to declare a dependency, for example OpenIDE-Module-Requires: some.token.

                    If other modules should not depend on this module, or should just use a

                    simple regular module dependency, you can just answer "nothing". If you

                    intentionally expose a semistable API to clients using implementation

                    dependencies, you should mention that here (but there is no need to give

                    an example of usage).

                </hint>

            </question>

    -->

    <answer id="deploy-dependencies">

        <p>

            Normal module dependency is enough.

        </p>

        <p>

            Availability of some implementation of the SPI is guaranteed by

            "OpenIDE-Module-Needs: org.netbeans.spi.io.InputOutputProvider" in

            the manifest of this module.

        </p>

    </answer>

    <!--

        <question id="deploy-jar" when="impl">

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

            <hint>

            Usually a module consist of one JAR file (perhaps with Class-Path

            extensions) and also a configuration file that enables it. If you

            have any other files, use

            <api group="java.io.File" name="yourname" type="export" category="friend">...</api>

            to define the location, name and stability of your files (of course

            changing "yourname" and "friend" to suit your needs).

                If it uses more than one JAR, describe where they are located, how

                they refer to each other.

                If it consist of module JAR(s) and other files, please describe

                what is their purpose, why other files are necessary. Please

                make sure that installation/uninstallation leaves the system

                in state as it was before installation.

                </hint>

            </question>

    -->

    <answer id="deploy-jar">

        <p>

            Just the module JAR.

        </p>

    </answer>

    <!--

            <question id="deploy-nbm" when="impl">

                Can you deploy an NBM via the Update Center?

                <hint>

                If not why?

                </hint>

            </question>

    -->

    <answer id="deploy-nbm">

        <p>

            Yes.

        </p>

    </answer>

    <!--

        <question id="deploy-packages" when="init">

            Are packages of your module made inaccessible by not declaring them

            public?

                <hint>

                By default NetBeans build harness treats all packages are private.

                If you export some of them - either as public or friend packages,

                you should have a reason. If the reason is described elsewhere

                in this document, you can ignore this question.

                </hint>

            </question>

    -->

    <answer id="deploy-packages">

        <p>

            No; only API classes are public.

        </p>

    </answer>

    <!--

            <question id="deploy-shared" when="final">

                Do you need to be installed in the shared location only, or in the user directory only,

                or can your module be installed anywhere?

                <hint>

                Installation location shall not matter, if it does explain why.

                Consider also whether <code>InstalledFileLocator</code> can help.

                </hint>

            </question>

    -->

    <answer id="deploy-shared">

        <p>

            Anywhere.

        </p>

    </answer>

    <!--

        <question id="exec-ant-tasks" when="impl">

            Do you define or register any ant tasks that other can use?

                <hint>

                If you provide an ant task that users can use, you need to be very

                careful about its syntax and behaviour, as it most likely forms an

                      API for end users and as there is a lot of end users, their reaction

                when such API gets broken can be pretty strong.

                </hint>

            </question>

    -->

    <answer id="exec-ant-tasks">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="exec-classloader" when="impl">

                Does your code create its own class loader(s)?

                <hint>

                A bit unusual. Please explain why and what for.

                </hint>

            </question>

    -->

    <answer id="exec-classloader">

        <p>

            No.

        </p>

    </answer>

    <!--

        <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>

    -->

    <answer id="exec-component">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="exec-introspection">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="exec-privateaccess" when="final">

                Are you aware of any other parts of the system calling some of 

                your methods by reflection?

                <hint>

                If so, describe the "contract" as an API. Likely private or friend one, but

                still API and consider rewrite of it.

                </hint>

            </question>

    -->

    <answer id="exec-privateaccess">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="exec-process" when="impl">

                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?

                <hint>

                If you feed an input, parse the output please declare that as an API.

                </hint>

            </question>

    -->

    <answer id="exec-process">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="exec-property" when="impl">

                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?

                <hint>

                If there is a property that can change the behavior of your 

                code, somebody will likely use it. You should describe what it does 

                and the <a href="http://wiki.netbeans.org/API_Stability">stability category</a>

                of this API. You may use

                <pre>

                    <api type="export" group="property" name="id" category="private" url="http://...">

                        description of the property, where it is used, what it influence, etc.

                    </api>

                </pre>

                </hint>

            </question>

    -->

    <answer id="exec-property">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="exec-reflection">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="exec-threading" when="init">

                What threading models, if any, does your module adhere to? How the

                project behaves with respect to threading?

                <hint>

                    Is your API threadsafe? Can it be accessed from any threads or

                    just from some dedicated ones? Any special relation to AWT and

                    its Event Dispatch thread? Also

                    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>

    -->

    <answer id="exec-threading">

        <p>

            API classes are thread safe, they mostly represent immutable

            objects, or delegate to the SPI.

        </p>

        <p>

            Implementators of the SPI should ensure that their code is properly

            synchronized, as it can be called from any thread.

        </p>

    </answer>

<!--

        <question id="format-clipboard" when="impl">

            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>?

                <hint>

                Often Node's deal with clipboard by usage of <code>Node.clipboardCopy, Node.clipboardCut and Node.pasteTypes</code>.

                Check your code for overriding these methods.

                </hint>

            </question>

    -->

    <answer id="format-clipboard">

        <p>

            Plain Unicode text only.

        </p>

    </answer>

    <!--

            <question id="format-dnd" when="impl">

                Which protocols (if any) does your code understand during Drag & Drop?

                <hint>

                Often Node's deal with clipboard by usage of <code>Node.drag, Node.getDropType</code>. 

                Check your code for overriding these methods. Btw. if they are not overridden, they

                by default delegate to <code>Node.clipboardCopy, Node.clipboardCut and Node.pasteTypes</code>.

                </hint>

            </question>

    -->

    <answer id="format-dnd">

        <p>

            N/A

        </p>

    </answer>

    <!--

        <question id="format-types" when="impl">

            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?

            <hint>

                <p>

                Files can be read and written by other programs, modules and users. If they influence

                your behaviour, make sure you either document the format or claim that it is a private

                api (using the <api> tag).

                </p>

                <p>

                If you generate an ant build file, this is very likely going to be seen by end users and

                they will be attempted to edit it. You should be ready for that and provide here a link

                to documentation that you have for such purposes and also describe how you are going to

                understand such files during next release, when you (very likely) slightly change the 

                format.

                </p>

            </hint>

        </question>

    -->

    <answer id="format-types">

        <p>

            None.

        </p>

    </answer>

    <!--

        <question id="lookup-lookup" when="init">

            Does your module use <code>org.openide.util.Lookup</code>

            or any similar technology to find any components to communicate with? Which ones?

                <hint>

                NetBeans is build around a generic registry of services called

                lookup. It is preferable to use it for registration and discovery

                if possible. See

                <a href="http://www.netbeans.org/download/dev/javadoc/org-openide-util/org/openide/util/lookup/doc-files/index.html">

                The Solution to Comunication Between Components

                </a>. If you do not plan to use lookup and insist usage

                of other solution, then please describe why it is not working for

                you.

                <br/>

                When filling the final version of your arch document, please

                describe the interfaces you are searching for, where 

                are defined, whether you are searching for just one or more of them,

                if the order is important, etc. Also classify the stability of such

                API contract. Use <api group=&lookup& /> tag, so

                your information gets listed in the summary page of your javadoc.

                </hint>

            </question>

    -->

    <answer id="lookup-lookup">

        <p>

            <code>IOProvider.getDefault()</code> asks lookup for the first instance

            of <code>InputOutputProvider</code>. This is normally provided by

            <code>org.netbeans.core.output2</code>.

        </p>

    </answer>

    <!--

            <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 a declarative annotation such as <code>@ServiceProvider</code>?

                Who is supposed to find your component?

                </hint>

            </question>

    -->

    <answer id="lookup-register">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="lookup-remove">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="perf-exit" when="final">

                Does your module run any code on exit?

            </question>

    -->

    <answer id="perf-exit">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="perf-huge_dialogs">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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?

                <hint>

                    Most of algorithms have increasing memory and speed complexity

                    with respect to size of data they operate on. What is the critical

                    part of your project that can be seen as a bottleneck with

                    respect to speed or required memory? What are the practical

                    sizes of data you tested your project with? What is your estimate

                    of potential size of data that would cause visible performance

                    problems? Is there some kind of check to detect such situation

                    and prevent "hard" crashes - for example the CloneableEditorSupport

                    checks for size of a file to be opened in editor

                    and if it is larger than 1Mb it shows a dialog giving the

                    user the right to decide - e.g. to cancel or commit suicide.

                </hint>

            </question>

    -->

    <answer id="perf-limit">

        <p>

            No.

        </p>

    </answer>

    <!--

            <question id="perf-mem" when="final">

                How much memory does your component consume? Estimate

                with a relation to the number of windows, etc.

            </question>

    -->

    <answer id="perf-mem">

        <p>

            N/A

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="perf-menus">

        <p>

            No.

        </p>

    </answer>

    <!--

        <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>

    -->

    <answer id="perf-progress">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="perf-scale">

        <p>

            Scalability in GUI speed and memory consumption is probably limited

            only by the Output Window implementation.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="perf-spi">

        <p>

            No special behavior.

        </p>

    </answer>

    <!--

            <question id="perf-startup" when="final">

                Does your module run any code on startup?

            </question>

    -->

    <answer id="perf-startup">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="perf-wakeup">

        <p>

            No.

        </p>

    </answer>

    <!--

        <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>

    -->

    <answer id="resources-file">

        <p>

            No, but the implementation may.

        </p>

    </answer>

    <!--

        <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>

    -->

    <answer id="resources-layer">

        <p>

            No.

        </p>

    </answer>

    <!--

        <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>

    -->

    <answer id="resources-mask">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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

                        <api type="export" group="preferences"

                        name="preference node name" category="private">

                        description of individual keys, where it is used, what it

                        influences, whether the module reads/write it, etc.

                        </api>

                    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>

    -->

    <answer id="resources-preferences">

        <p>

            No.

        </p>

    </answer>

    <!--

        <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://wiki.netbeans.org/API_Design#What_is_an_API.3F">

                common stability categories</a>.

                </hint>

            </question>

    -->

    <answer id="resources-read">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="security-grant">

        <p>

            No.

        </p>

    </answer>

    <!--

            <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>

    -->

    <answer id="security-policy">

        <p>

            No.

        </p>

    </answer>

</api-answers>

<?xml version="1.0" encoding="UTF-8"?>

<project basedir="." default="netbeans" name="api.io">

    <description>Builds, tests, and runs the project org.netbeans.api.io</description>

    <import file="../nbbuild/templates/projectized.xml"/>

</project>

Manifest-Version: 1.0

AutoUpdate-Show-In-Client: true

OpenIDE-Module: org.netbeans.api.io

OpenIDE-Module-Localizing-Bundle: org/netbeans/api/io/Bundle.properties

OpenIDE-Module-Specification-Version: 1.0

OpenIDE-Module-Needs: org.netbeans.spi.io.InputOutputProvider

is.autoload=true

javac.source=1.6

javac.compilerargs=-Xlint -Xlint:-serial

javadoc.arch=${basedir}/arch.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://www.netbeans.org/ns/project/1">

    <type>org.netbeans.modules.apisupport.project</type>

    <configuration>

        <data xmlns="http://www.netbeans.org/ns/nb-module-project/3">

            <code-name-base>org.netbeans.api.io</code-name-base>

            <module-dependencies>

                <dependency>

                    <code-name-base>org.netbeans.api.annotations.common</code-name-base>

                    <build-prerequisite/>

                    <compile-dependency/>

                    <run-dependency>

                        <release-version>1</release-version>

                        <specification-version>1.25</specification-version>

                    </run-dependency>

                </dependency>

                <dependency>

                    <code-name-base>org.openide.util.base</code-name-base>

                    <build-prerequisite/>

                    <compile-dependency/>

                    <run-dependency>

                        <specification-version>9.1</specification-version>

                    </run-dependency>

                </dependency>

                <dependency>

                    <code-name-base>org.openide.util.lookup</code-name-base>

                    <build-prerequisite/>

                    <compile-dependency/>

                    <run-dependency>

                        <specification-version>8.26</specification-version>

                    </run-dependency>

                </dependency>

            </module-dependencies>

            <test-dependencies>

                <test-type>

                    <name>unit</name>

                    <test-dependency>

                        <code-name-base>org.netbeans.libs.junit4</code-name-base>

                        <compile-dependency/>

                    </test-dependency>

                    <test-dependency>

                        <code-name-base>org.netbeans.modules.nbjunit</code-name-base>

                        <compile-dependency/>

                    </test-dependency>

                </test-type>

            </test-dependencies>

            <public-packages>

                <package>org.netbeans.api.io</package>

                <package>org.netbeans.spi.io</package>

                <package>org.netbeans.spi.io.hyperlink</package>

            </public-packages>

        </data>

    </configuration>

</project>

OpenIDE-Module-Display-Category=Infrastructure

OpenIDE-Module-Long-Description=\

    API classes for creating output panes (e.g. tabs in output window) and for writing data into them.\n\

    SPI for custom implementations of output window.

OpenIDE-Module-Name=I/O API and SPI

OpenIDE-Module-Short-Description=APIs and SPIs related to displaying output.

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2014 Sun Microsystems, Inc.

 */

package org.netbeans.api.io;

import java.io.PrintWriter;

import org.netbeans.spi.io.InputOutputProvider;

/**

 * A fold (nested or standalone) in the output window.

 *

 * <p>

 * Methods of this class can be called in any thread.

 * </p>

 *

 * @author jhavlin

 */

public abstract class Fold {

    static final Fold UNSUPPORTED = new Fold() {

        @Override

        public void setExpanded(boolean expanded) {

        }

        @Override

        void endFold() {

        }

    };

    private Fold() {

    }

    static <IO, OW extends PrintWriter, P, F> Fold create(

            InputOutputProvider<IO, OW, P, F> provider, IO io, OW writer,

            F fold) {

        if (fold == null) {

            return UNSUPPORTED;

        } else {

            return new Impl<IO, OW, P, F>(provider, io, writer, fold);

        }

    }

    /**

     * Set fold expansion state.

     *

     * @param expanded True to expand the fold, false to collapse it.

     */

    public abstract void setExpanded(boolean expanded);

    abstract void endFold();

    /**

     * Expand the fold.

     */

    public final void expand() {

        setExpanded(true);

    }

    /**

     * Collapse the fold.

     */

    public final void collapse() {

        setExpanded(false);

    }

    private static class Impl<IO, OW extends PrintWriter, P, F> extends Fold {

        private final InputOutputProvider<IO, OW, P, F> provider;

        private final IO io;

        private final OW writer;

        private final F fold;

        public Impl(InputOutputProvider<IO, OW, P, F> provider, IO io,

                OW writer, F fold) {

            this.provider = provider;

            this.io = io;

            this.writer = writer;

            this.fold = fold;

        }

        @Override

        public void setExpanded(boolean expanded) {

            provider.setFoldExpanded(io, writer, fold, expanded);

        }

        @Override

        void endFold() {

            provider.endFold(io, writer, fold);

        }

    }

}

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2014 Sun Microsystems, Inc.

 */

package org.netbeans.api.io;

import java.net.URI;

import org.netbeans.api.annotations.common.NonNull;

import org.netbeans.modules.io.HyperlinkAccessor;

import org.openide.util.Parameters;

/**

 * Hyperlink in output window. It can be specified by a URI to open (e.g. file +

 * row + col), or a {@link Runnable} to invoke when the hyperlink is clicked.

 *

 * @author jhavlin

 */

public abstract class Hyperlink {

    private final boolean important;

    private Hyperlink(boolean important) {

        this.important = important;

    }

    static {

        HyperlinkAccessor.setDefault(new HyperlinkAccessorImpl());

    }

    /**

     * @return True if the hyperlink has been marked as important, false if it

     * is a standard link.

     */

    boolean isImportant() {

        return important;

    }

    /**

     * Create a new hyperlink for specified URI.

     *

     * @param uri Hyperlink targed.

     *

     * @return The new hyperlink.

     */

    @NonNull

    public static Hyperlink forURI(@NonNull URI uri) {

        return forURI(uri, false);

    }

    /**

     * Create a new hyperlink for specified {@link Runnable}, which will be

     * invoked when the line is clicked.

     *

     * @param runnable The runnable to run on click.

     * @return The new hyperlink.

     */

    @NonNull

    public static Hyperlink onClick(@NonNull Runnable runnable) {

        return onClick(runnable, false);

    }

    /**

     * Create a new hyperlink for specified URI.

     *

     * @param uri Hyperlink targed.

     * @param important True if the hyperlink should be handled as an important

     * one, false if it is a standard one.

     *

     * @return The new hyperlink.

     */

    @NonNull

    public static Hyperlink forURI(@NonNull URI uri, boolean important) {

        Parameters.notNull("uri", uri);

        return new UriHyperlink(uri, important);

    }

    /**

     * Create a new hyperlink for specified {@link Runnable}, which will be

     * invoked when the line is clicked.

     *

     * @param runnable The runnable to run on click.

     * @param important True if the hyperlink should be handled as an important

     * one, false if it is a standard one.

     * @return The new hyperlink.

     */

    @NonNull

    public static Hyperlink onClick(@NonNull Runnable runnable,

            boolean important) {

        Parameters.notNull("runnable", runnable);

        return new OnClickHyperlink(runnable, important);

    }

    @SuppressWarnings("PackageVisibleInnerClass")

    static class OnClickHyperlink extends Hyperlink {

        private final Runnable runnable;

        public OnClickHyperlink(Runnable runnable, boolean important) {

            super(important);

            this.runnable = runnable;

        }

        public Runnable getRunnable() {

            return runnable;

        }

    }

    @SuppressWarnings("PackageVisibleInnerClass")

    static class UriHyperlink extends Hyperlink {

        private final URI uri;

        public UriHyperlink(URI uri, boolean important) {

            super(important);

            this.uri = uri;

        }

        public URI getUri() {

            return uri;

        }

    }

}

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2014 Sun Microsystems, Inc.

 */

package org.netbeans.api.io;

import java.net.URI;

import org.netbeans.modules.io.HyperlinkAccessor;

import org.netbeans.spi.io.HyperlinkType;

/**

 * Implementation of accessor that enables retrieving information about

 * hyperlinks in SPI.

 *

 * @author jhavlin

 */

class HyperlinkAccessorImpl extends HyperlinkAccessor {

    @Override

    public HyperlinkType getType(Hyperlink hyperlink) {

        if (hyperlink instanceof Hyperlink.OnClickHyperlink) {

            return HyperlinkType.ON_CLICK;

        } else if (hyperlink instanceof Hyperlink.UriHyperlink) {

            return HyperlinkType.FOR_URI;

        } else {

            throw new IllegalArgumentException("Unknown hyperlink.");   //NOI18N

        }

    }

    @Override

    public boolean isImportant(Hyperlink hyperlink) {

        return hyperlink.isImportant();

    }

    @Override

    public Runnable getRunnable(Hyperlink hyperlink) {

        if (hyperlink instanceof Hyperlink.OnClickHyperlink) {

            return ((Hyperlink.OnClickHyperlink) hyperlink).getRunnable();

        } else {

            throw new IllegalArgumentException("Not an ON_CLICK link.");//NOI18N

        }

    }

    @Override

    public URI getURI(Hyperlink hyperlink) {

        if (hyperlink instanceof Hyperlink.UriHyperlink) {

            return ((Hyperlink.UriHyperlink) hyperlink).getUri();

        } else {

            throw new IllegalArgumentException("Not a FOR_URI link.");  //NOI18N

        }

    }

}

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 *

 * Contributor(s):

 *

 * Portions Copyrighted 2014 Sun Microsystems, Inc.

 */

package org.netbeans.api.io;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.io.Reader;

import java.util.Collection;

import java.util.Set;

import org.netbeans.api.annotations.common.NonNull;

import org.netbeans.spi.io.InputOutputProvider;

import org.openide.util.Lookup;

import org.openide.util.Parameters;

/**

 * A factory for IO tabs shown in the output window. To create a new tab to

 * write to, call e.g.

 * <code>IOProvider.getDefault().getIO("MyTab", false)</code> (pass true if

 * there may be an existing tab with the same name and you want to write to a

 * new tab).

 *

 * <p>

 * Methods of this class can be called in any thread.

 * </p>

 *

 * @author Jesse Glick, Jaroslav Havlin

 */

public abstract class IOProvider {

    private IOProvider() {

    }

    /**

     * Get the default I/O provider.

     * <p>

     * Normally this is taken from {@link Lookup#getDefault} but if there is no

     * instance in lookup, a fallback instance is created which just uses the

     * standard system I/O streams. This is useful for unit tests and perhaps

     * for standalone usage of various libraries.

     * </p>

     *

     * @return The default instance (never null).

     */

    @NonNull

    public static IOProvider getDefault() {

        InputOutputProvider<?, ?, ?, ?> def

                = Lookup.getDefault().lookup(InputOutputProvider.class);

        if (def != null) {

            return wrapProvider(def);

        } else {

            return wrapProvider(new Trivial());

        }

    }

    private static <IO, OW extends PrintWriter, P, F> IOProvider wrapProvider(

            InputOutputProvider<IO, OW, P, F> provider) {

        return new Impl<IO, OW, P, F>(provider);

    }

    /**

     * Gets IOProvider of selected name or delegates to getDefault() if none was

     * found.

     *

     * @param name ID of provider.

     * @return The instance corresponding to provided name or default instance

     * if not found.

     */

    @NonNull

    public static IOProvider get(@NonNull String name) {

        Parameters.notNull("name", name);

        @SuppressWarnings("rawtypes")

        Collection<? extends InputOutputProvider> providers

                = Lookup.getDefault().lookupAll(InputOutputProvider.class);

        for (InputOutputProvider<?, ?, ?, ?> p : providers) {

            if (p.getName().equals(name)) {

                return wrapProvider(p);

            }

        }

        return getDefault();

    }

    /**

     * Gets name (id) of provider.

     *

     * @return Name of this provider.

     */

    @NonNull

    public abstract String getName();

    /**

     * Get a named instance of InputOutput, which represents an output tab in

     * the output window. Streams for reading/writing can be accessed via

     * getters on the returned instance.

     *

     * @param name A localised display name for the tab.

     * @param newIO If <tt>true</tt>, a new <code>InputOutput</code> is

     * returned, else an existing <code>InputOutput</code> of the same name may

     * be returned.

     * @return An <code>InputOutput</code> instance for accessing the new tab.

     * @see InputOutput

     */

    @NonNull

    public abstract InputOutput getIO(@NonNull String name, boolean newIO);

    /**

     * Get a named instance of InputOutput, which represents an output tab in

     * the output window. Streams for reading/writing can be accessed via

     * getters on the returned instance.

     *

     * @param name A localised display name for the tab.

     * @param newIO If <tt>true</tt>, a new <code>InputOutput</code> is

     * returned, else an existing <code>InputOutput</code> of the same name may

     * be returned.

     * @param lookup Lookup which may contain additional information for various

     * implementations of output window.

     * @return An <code>InputOutput</code> instance for accessing the new tab.

     * @see InputOutput

     */

    @NonNull

    public abstract InputOutput getIO(@NonNull String name, boolean newIO,

            @NonNull Lookup lookup);

    /**

     * Implementation of IOProvider that uses {@link InputOutputProvider} SPI

     * internally.

     *

     * @param <IO>

     * @param <OW>

     * @param <POS>

     */

    private static class Impl<IO, OW extends PrintWriter, P, F>

            extends IOProvider {

        private final InputOutputProvider<IO, OW, P, F> impl;

        public Impl(InputOutputProvider<IO, OW, P, F> impl) {

            this.impl = impl;

        }

        @Override

        public String getName() {

            return impl.getName();

        }

        @Override

        public InputOutput getIO(String name, boolean newIO) {

            return getIO(name, newIO, Lookup.EMPTY);

        }

        @Override

        public InputOutput getIO(String name, boolean newIO, Lookup lookup) {

            Parameters.notNull("name", name);

            Parameters.notNull("lookup", lookup);

            return InputOutput.create(impl, impl.getIO(name, newIO, lookup));

        }

    }

    /**

     * Trivial implementation of {@link IOProvider} that uses system input,

     * output and error streams.

     */

    private static class Trivial

            implements InputOutputProvider<Object, PrintWriter, Void, Void> {

        @Override

        public String getName() {

            return "Trivial";

        }

        @Override

        public Object getIO(String name, boolean newIO, Lookup lookup) {

            return this;

        }

        @Override

        public Reader getIn(Object io) {

            return new InputStreamReader(System.in);

        }

        @Override

        public PrintWriter getOut(Object io) {

            return new PrintWriter(System.out);

        }

        @Override

        public PrintWriter getErr(Object io) {

            return new PrintWriter(System.err);

        }

        @Override

        public void print(Object io, PrintWriter writer, String text,

                Hyperlink link, OutputColor color, boolean printLineEnd) {

            writer.print(text);

            if (printLineEnd) {

                writer.println();

            }

        }

        @Override

        public Lookup getIOLookup(Object io) {

            return Lookup.EMPTY;

        }

        @Override

        public void resetIO(Object io) {

        }

        @Override

        public void showIO(Object io, PrintWriter writer,

                Set<ShowOperation> operations) {

        }

        @Override

        public void closeIO(Object io) {

        }

        @Override

        public boolean isIOClosed(Object io) {

            return false;

        }

        @Override

        public Void getCurrentPosition(Object io, PrintWriter writer) {

            return null;

        }

        @Override

        public void scrollTo(Object io, PrintWriter writer, Void position) {

        }

        @Override

        public Void startFold(Object io, PrintWriter writer, boolean expanded) {

            return null;

        }

        @Override

        public void endFold(Object io, PrintWriter writer, Void fold) {

        }

        @Override

        public void setFoldExpanded(Object io, PrintWriter writer, Void fold,

                boolean expanded) {

        }

        @Override

        public String getIODescription(Object io) {

            return null;

        }

        @Override

        public void setIODescription(Object io, String description) {