<?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"

>

  &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">

        <p>

            Intent is an description of some intended operation. It is specified

            by action type (String) and a URI. When some Intent is executed,

            proper handler is chosen and it performs the actual operation.

        </p>

        <p>

            Intents provide loose coupling between modules that may request an

            operation and modules that can perform it. They can be easily

            serialized, so they are suitable for distributed heterogenous

            systems.

        </p>

        <api

            name="IntentAPI"

            group="java"

            type="export"

            category="official"

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

        >

            <p>

                API for describing and executing intended operations.

            </p>

        </api>

        <api

            name="IntentHandlerSPI"

            group="java"

            type="export"

            category="official"

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

        >

            <p>

                SPI for handlers that are able to invoke proper operation for

                specified intents.

            </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>

            The code is checked by unit tests.

        </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>

            Done.

        </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="execIntentBasic" name="Create an Intent, execute it and wait for result">

            <pre>

    Future&lt;Object&gt; result = new <a href="@TOP@/org/netbeans/api/intent/Intent.html">Intent</a>(Intent.ACTION_VIEW, new URI("scheme://path/")).execute();

    Object value = result.get();

            </pre>

        </usecase>

        <usecase id="execIntentCallback" name="Create an Intent and execute it with callback">

            <pre>

    new <a href="@TOP@/org/netbeans/api/intent/Intent.html">Intent</a>(Intent.ACTION_VIEW, new URI("scheme://path/")).execute(new <a href="@TOP@/org/netbeans/api/intent/Callback.html">Callback</a>() {

      void success(Object result) {

        // use the result somehow

      }

      void failure(Exception exception) {

        // report the failure somehow

      }

    });

            </pre>

        </usecase>

        <usecase id="handleIntentSync" name="Handle some Intent">

            <pre>

   &nbsp;&#64;<a href="@TOP@/org/netbeans/spi/intent/IntentHandlerRegistration.html">IntentHandlerRegistration</a>(

                displayName = "Show my item in MyEditor",

                position = 800,

                uriPattern = "myscheme://.*",

                actions = {Intent.ACTION_VIEW, Intent.ACTION_EDIT}

    )

    public static Object handleIntent(<a href="@TOP@/org/netbeans/api/intent/Intent.html">Intent</a> intent) {

        SomeType result = parseAndPerformIntentSomehow(intent);

        return result;

    }

            </pre>

        </usecase>

        <usecase id="handleIntentAsync" name="Handle some Intent using Result object">

            <pre>

   &nbsp;&#64;<a href="@TOP@/org/netbeans/spi/intent/IntentHandlerRegistration.html">IntentHandlerRegistration</a>(

                displayName = "Show my item in MyEditor",

                position = 800,

                uriPattern = "myscheme://.*",

                actions = "*"

    )

    public static void handleIntent(final <a href="@TOP@/org/netbeans/api/intent/Intent.html">Intent</a> intent, final <a href="@TOP@/org/netbeans/spi/intent/Result.html">Result</a> result) {

        // Move the execution to another thread. Do not wait for the result

        // here, just pass the result object.

        EventQueue.invokeLater(new Runnable() {

            public void run() {

                try {

                    Object result = doSomethingInEDT(intent);

                    result.setResult(e);

                } catch (Exception e) {

                    result.setException(e);

                }

            }

        });

    }

            </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>

            This module provides a contract between API clients that can express

            some intention to invoke an operation and SPI providers that can

            handle that intention.

        </p>

        <p>

            This is useful in client-server environments, where the intention

            can be constructed on server-side, but handled on client-side. The

            objects that describe the intention should be easy to construct,

            transfer and interpret.

        </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>

            No deprecation needed.

        </p>

    </answer>

    <!--

            <question id="compat-i18n" when="impl">-<replacefilter token="@org-netbeans-modules-masterfs-ui@" value="${javadoc.docs.org-netbeans-modules-masterfs-ui}"/>

-<replacefilter token="@org-netbeans-modules-parsing-nb@" value="${javadoc.docs.org-netbeans-modules-parsing-nb}"/>

-<replacefilter token="@org-netbeans-modules-project-libraries-ui@" value="${javadoc.docs.org-netbeans-modules-project-libraries-ui}"/>

-<replacefilter token="@org-openide-filesystems-nb@" value="${javadoc.docs.org-openide-filesystems-nb}"/>

                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.

        </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>

            No standards.

        </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>

            No settings are read or written.

        </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">

        <p>

            1.6

        </p>

    </answer>

    <!--

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

                Do you require the JDK or is the JRE enough?

            </question>

    -->

    <answer id="dep-jrejdk">

        <p>

            JRE

        </p>

    </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">

        <p>

            No non-NB dependencies.

        </p>

    </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">

        <p>

            Any platform.

        </p>

    </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>

            Standard module dependency is sufficient.

        </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 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>

            Only API and SPI packages 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>

            Installation location does not matter.

        </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>

            The API is threadsafe. SPI implementations should ensure proper

            synchronization.

        </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>

            No clipboard access.

        </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>

            No Drag & Drop support.

        </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>

            No files are read or written by this module.

        </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>

            No.

        </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>

            The annotation processor is registered using ServiceProvider.

        </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>

            Very little memory consumed.

        </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>

            Code in the module is very simple. Performance is incluenced mosly

            by SPI implementations, which should run quite quickly.

        </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 performance criteria are enforced. The plugged-in code is invoked

            by a dedicated executor.

        </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.

        </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.intent">

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

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

</project>

Manifest-Version: 1.0

AutoUpdate-Show-In-Client: true

OpenIDE-Module: org.netbeans.api.intent

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

OpenIDE-Module-Specification-Version: 1.0

is.autoload=true

javac.source=1.7

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.intent</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.filesystems</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</code-name-base>

                    <build-prerequisite/>

                    <compile-dependency/>

                    <run-dependency>

                        <specification-version>9.3</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.intent</package>

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

            </public-packages>

        </data>

    </configuration>

</project>

OpenIDE-Module-Display-Category=Infrastructure

OpenIDE-Module-Long-Description=\

    API for invoking intended operations (described by suitable type of object, e.g. \

    URI) by some of registered handlers.\n\

    SPI for handlers of possible intended operations.

OpenIDE-Module-Name=Intent API

OpenIDE-Module-Short-Description=Performing intended operations by suitable handlers

/*

 * 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.intent;

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

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

/**

 * Callback invoked when an intent action has finished. It is run in a dedicated

 * thread in background.

 *

 * @see Intent#execute(org.netbeans.api.intent.Callback)

 *

 * @author jhavlin

 */

public interface Callback {

    /**

     * Invoked when the intent action has completed successfully. The type of

     * result depends on implementation of chosen intent handler, it can be

     * null.

     *

     * @param result Result value.

     */

    public void success(@NullAllowed Object result);

    /**

     * Invoked when the intent action has failed.

     *

     * @param exception Encountered exception.

     */

    public void failure(@NonNull Exception exception);

}

/*

 * 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.intent;

import java.net.URI;

import java.util.Arrays;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import java.util.SortedSet;

import java.util.TreeSet;

import java.util.concurrent.Callable;

import java.util.concurrent.Future;

import java.util.logging.Level;

import java.util.logging.Logger;

import java.util.regex.Pattern;

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

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

import org.netbeans.modules.intent.CallbackResult;

import org.netbeans.modules.intent.IntentHandler;

import org.netbeans.modules.intent.SettableResult;

import org.netbeans.spi.intent.Result;

import org.openide.filesystems.FileObject;

import org.openide.filesystems.FileUtil;

import org.openide.util.Parameters;

/**

 * Description of some intended operation. The operation is described by an

 * action and a URI.

 *

 * <p>

 * If the intent is executed, proper registered handler is chosen to perform the

 * actual operation.

 * </p>

 * <p>

 * For example, the following code can be used to open a file in editor (if the

 * environment is suitable for such operation).

 * </p>

 * <code>

 * new Intent(Intent.ACTION_VIEW, new URI("file://path/file.txt")).execute();

 * </code>

 *

 * @author jhavlin

 */

public final class Intent {

    private static final Logger LOG = Logger.getLogger(Intent.class.getName());

    /**

     * Standard VIEW action type.

     */

    public static final String ACTION_VIEW = "VIEW";                    //NOI18N

    /**

     * Standard EDIT action type.

     */

    public static final String ACTION_EDIT = "EDIT";                    //NOI18N

    private final String action;

    private final URI uri;

    /**

     * Constructor for an intended operation.

     *

     * @param action Action type to perform. It is recommended to use either

     * standard actions predefined in Intent class (see {@link #ACTION_EDIT},

     * {@link #ACTION_VIEW}), or strings similar to fully qualified field names

     * (e.g. "org.some.package.ClassName.ACTION_CUSTOM").

     *

     * @param uri URI specifying the operation.

     */

    public Intent(@NonNull String action, @NonNull URI uri) {

        Parameters.notNull("action", action);

        Parameters.notNull("uri", uri);

        this.action = action;

        this.uri = uri;

    }

    /**

     * Get action type.

     *

     * @return The action type.

     */

    public @NonNull String getAction() {

        return action;

    }

    /**

     * Get URI specifying this intent.

     *

     * @return The URI.

     */

    public @NonNull URI getUri() {

        return uri;

    }

    /**

     * Execute the intent. The operation will be run asynchronously.

     * <p>

     * If the result is ignored, it's recommended to use

     * {@code intent.execute(null);}

     * </p>

     *

     * @return {@link Future} Future for result of the action. The type of

     * result depends on implementation of chosen intent handler, it can be

     * null.

     */

    public @NonNull Future<Object> execute() {

        return IntentHandler.RP.submit(new Callable<Object>() {

            @Override

            public Object call() throws Exception {

                SettableResult sr = new SettableResult();

                invoke(Intent.this, sr);

                if (sr.getException() != null) {

                    throw sr.getException();

                }

                return sr.getResult();

            }

        });

    }

    /**

     * Execute the intent. The operation will be run asynchronously.

     *

     * @param callback Callback object that will be notified when the execution

     * completes. If callback is null, the result will be ignored.

     */

    public void execute(@NullAllowed final Callback callback) {

        IntentHandler.RP.post(new Runnable() {

            @Override

            public void run() {

                invoke(Intent.this, callback == null

                        ? null

                        : new CallbackResult(callback));

            }

        });

    }

    /**

     * Get available actions for the intent.

     *

     * @return Immutable set of available actions, sorted by priority.

     */

    public @NonNull SortedSet<? extends IntentAction> getIntentActions() {

        SortedSet<IntentHandler> intentHandlers = getIntentHandlers(this);

        SortedSet<IntentAction> actions = new TreeSet<>(

                new Comparator<IntentAction>() {

                    @Override

                    public int compare(IntentAction o1, IntentAction o2) {

                        return o1.getPosition() - o2.getPosition();

                    }

                });

        for (IntentHandler ih : intentHandlers) {

            actions.add(new IntentAction(this, ih));

        }

        return Collections.unmodifiableSortedSet(actions);

    }

    private static SortedSet<IntentHandler> getIntentHandlers(

            Intent intent) {

        FileObject f = FileUtil.getConfigFile("Services/Intent/Handlers");

        if (f == null) {

            return null;

        }

        SortedSet<IntentHandler> candidates = new TreeSet<>();

        for (FileObject fo : f.getChildren()) {

            if ("instance".equals(fo.getExt())) {

                Object pattern = fo.getAttribute("uriPattern");

                Object displayName = fo.getAttribute("displayName");

                Object position = fo.getAttribute("position");

                Object actions = fo.getAttribute("actions");

                if (pattern instanceof String && displayName instanceof String

                        && position instanceof Integer

                        && actions instanceof String) {

                    if (canSupport((String) pattern, (String) actions, intent)) {

                        try {

                            IntentHandler ih = FileUtil.getConfigObject(

                                    fo.getPath(), IntentHandler.class);

                            candidates.add(ih);

                        } catch (Exception e) {

                            LOG.log(Level.INFO,

                                    "Cannot instantiate handler for " //NOI18N

                                    + fo.getPath(), e);

                        }

                    }

                } else {

                    LOG.log(Level.FINE, "Invalid URI handler {0}", fo.getPath());

                }

            }

        }

        return candidates;

    }

    /**

     * Check whether an intent is supported by a handler specified by a URI

     * pattern and action list.

     *

     * @param uriPattern Pattern for the URI.

     * @param actions Comma-separated actions.

     * @param intent Intent to check.

     * @return True if the intent matches the URI pattern and action list.

     */

    private static boolean canSupport(String uriPattern, String actions,

            Intent intent) {

        Pattern p = Pattern.compile(uriPattern);

        if (p.matcher(intent.getUri().toString()).matches()) {

            if ("*".equals(actions)) {

                return true;

            } else {

                List<String> actionList = Arrays.asList(actions.split(","));

                return actionList.contains(intent.getAction());

            }

        } else {

            return false;

        }

    }

    private static void invoke(Intent intent, Result resultOrNull) {

        Throwable lastException = null;

        boolean handled = false;

        for (IntentHandler h : getIntentHandlers(intent)) {

            try {

                h.handle(intent, resultOrNull);

                handled = true;

                break;

            } catch (Exception e) {

                lastException = e;

                LOG.log(Level.WARNING, null, e);

            }

        }

        if (!handled) {

            if (resultOrNull != null) {

                resultOrNull.setException(lastException == null

                        ? new NoAvailableHandlerException(intent)

                        : new NoAvailableHandlerException(intent, lastException));

            }

            LOG.log(Level.INFO, "Intent {0} cannot be handled", intent);//NOI18N

        }

    }

    @Override

    public String toString() {

        return "Intent{" + "action=" + action + ", uri=" + 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.intent;

import java.util.concurrent.Callable;

import java.util.concurrent.Future;

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

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

import org.netbeans.modules.intent.CallbackResult;

import org.netbeans.modules.intent.IntentHandler;

import org.netbeans.modules.intent.SettableResult;

import org.netbeans.spi.intent.Result;

/**

 * Actual action for an Intent. Pair of an Intent and one of its handlers.

 *

 * @see Intent#getIntentActions()

 * @author jhavlin

 */

public final class IntentAction {

    private final Intent intent;

    private final IntentHandler delegate;

    IntentAction(Intent intent, IntentHandler delegate) {

        this.intent = intent;

        this.delegate = delegate;

    }

    int getPosition() {

        return delegate.getPosition();

    }

    /**

     * Execute the intent action. The operation will be run asynchronously.

     *

     * @param callback Callback object that will be notified when the execution

     * completes. If callback is null, the result will be ignored.

     */

    public void execute(@NullAllowed final Callback callback) {

        IntentHandler.RP.post(new Runnable() {

            @Override

            public void run() {

                Result result = callback == null

                        ? null

                        : new CallbackResult(callback);

                delegate.handle(intent, result);

            }

        });

    }

    /**

     * Execute the intent action. The operation will be run asynchronously.

     * <p>

     * If the result is ignored, it's recommended to use

     * {@code intentAction.execute(null);}

     * </p>

     *

     * @return Future for result of the action. The type of result depends on

     * implementation of chosen intent handler, it can be null.

     */

    public @NonNull Future<Object> execute() {

        return IntentHandler.RP.submit(new Callable<Object>() {

            @Override

            public Object call() throws Exception {

                SettableResult result = new SettableResult();

                delegate.handle(intent, result);

                if (result.getException() != null) {

                    throw result.getException();

                }

                return result.getResult();

            }

        });

    }

    /**

     * Get display name of this action.

     *

     * @return The localized display name.

     */

    public @NonNull String getDisplayName() {

        return delegate.getDisplayName();

    }

    /**

     * Get icon of this action.

     *

     * @return Some resource identifier, e.g. icon id, path or URI.

     * Depends on the platform. If not available, empty string is returned.

     */

    public @NonNull String getIcon() {

        return delegate.getIcon();

    }

}

/*

 * 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.intent;

/**

 * Exception thrown when no handler is available for the Intent, or when

 * invocation of all handlers fails. In the latter case, exception thrown by the

 * last handler is set as the init cause of this exception.

 *

 * @author jhavlin

 */

public class NoAvailableHandlerException extends Exception {

    public NoAvailableHandlerException(Intent intent) {

        super(messageForIntent(intent));

    }

    public NoAvailableHandlerException(Intent intent, Throwable cause) {

        super(messageForIntent(intent), cause);

    }

    private static String messageForIntent(Intent intent) {

       return "No available handler for intent " + intent;

    }

}

/*

 * 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.

 */

/**

 * API for working with {@link org.netbeans.api.intent.Intent}s, abstract descriptions of intended

 * operations.

 * <p>

 *  Intents can be used when we want to perform some standard operation and we

 *  believe that the environment (the IDE, some application) is capable of

 *  finding and choosing correct action for it.

 * </p>

 * <p>

 *  The operations are specified as pair of action type and a URI. See example:

 * </p>

 * <code>

 *  {@link org.netbeans.api.intent.Intent} i = new {@link org.netbeans.api.intent.Intent}(Intent.ACTION_VIEW, new URI("file://path/file.txt"));

 * </code>

 * <p>

 *  We can execute an Intent to let the system choose to most appropriate

 *  action for the intent and invoke it:

 * </p>

 * <code>

 *  i.{@link org.netbeans.api.intent.Intent#execute() execute()};

 * </code>

 * <p>

 *  Or we can get list of all available actions, display them somehow, and let

 *  the user select one of them:

 * </p>

 * <code>

 *  Set<IntentAction> available = i.{@link org.netbeans.api.intent.Intent#getIntentActions() getIntentActions()};

 * </code>

 */

package org.netbeans.api.intent;

/*

 * 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