JDK-6255196 : API to launch desktop helper applications
  • Type: Enhancement
  • Component: client-libs
  • Sub-Component: java.awt
  • Affected Version: 1.1.7,1.4.1,1.4.2,5.0,6
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic,windows_xp
  • CPU: generic,x86
  • Submitted: 2005-04-14
  • Updated: 2017-05-16
  • Resolved: 2005-08-21
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JDK 6
6 b49Fixed
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Description
This RFE is the implementation of http://jplan.sfbay/feature/239.
See the proposed API at 
http://sceri.prc/desktop/MH/java_integration/download/desktop_api_tuning/javadoc/
###@###.### 2005-04-14 10:58:01 GMT

Comments
EVALUATION - "The problem with this is that enums are not extensible." this has been considered, and here is the answer from Peter von der Ah��: ------------------8<---------------------------------- "> > - is it safe to declare an enum with some set of values, and then > > extend this set of values later, in a future release? > > It is intended to work that way. I will be relying on this feature > myself in JSR 199 and a low level compiler API to be included in > mustang. > > A preliminary version of JLS's chapter 13 (Binary Compatibility) says: > > 13.4.26 Evolution of Enums > > Adding or reordering constants from an enum type will not break > compatibility with pre-existing binaries. > If a precompiled binary attempts to access an enum constant that > no longer exists, the client will fail at runtime with a > NoSuchFieldError. Therefore such a change is not recommended for > widely distributed enums. > In all other respects, the binary compatibility rules for enums > are identical to those for classes. > > I guess that the wording might change slightly, but this is considered a > very important aspect of enums. ------------------8<---------------------------------- - ... It would be useful to programatically have access to these verbs ... This is already integrated in 6.0, as part of the JavaBeans Activation Framework. http://java.sun.com/products/javabeans/jaf/index.jsp. Javadoc has not been yet generated, however the code is there, you may find it by downloading source snapshot of the latest Mustang build from mustang.dev.java.net, see package javax.activation
2005-08-05

EVALUATION The API is being developed and implemented by JDIC engineers, current contact is Armin Chen. ###@###.### 2005-04-14 11:01:29 GMT CCC: http://ccc.sfbay/6255196 ###@###.### 2005-04-14 11:01:43 GMT As of the latest JCG meeting, we don't plan to release it in Mustang. ###@###.### 2005-05-26 12:10:19 GMT Actually, we decided to persue this feature for Mustang. The planned API looks as follows: package java.awt; /** * The {@code Desktop} class allows a Java application to launch * associated applications registered on the native desktop to handle a * {@link java.net.URI} or a file. * <p> * Supported operations include: * <ul> * <li>launching the user-default browser to show a specified URI;</li> * <li>launching the user-default mail client with an optional {@code mailto} URI;</li> * <li>launching a registered application to open, edit or print a specified file.</li> * </ul> * * <p> This class provides methods corresponding to these operations. The methods * look for the associated application registered on the current platform, and * launch it to handle a URI or file. If there is no associated * application or the associated application fails to be launched, an exception * is thrown. * * <p> An application is registered to a URI or file type; for * example, the {@code "sxi"} file extension is typically registered * to StarOffice. The mechanism of registereing, accessing, and * launching the associated application is platform-dependent. * * <p> * Each operation is an action type represented by the {@link Desktop.Action} * class. * <p> * Note: when some action is invoked and the associated application is * executed, it will be executed on the same system as the one on which the * Java application was launched. * * @since 1.6 * @author Armin Chen * @author George Zhang */ public class Desktop { /** * Represents an action type. Each platform supports a different * set of actions. You may use the {@link Desktop#isSupported} * method to determine if the given action is supported by the * current platform. * @see java.awt.Desktop#isSupported(java.awt.Desktop.Action) * @since 1.6 */ public static enum Action { /** * Represents an "open" action. * @see Desktop#open(java.io.File) */ OPEN, /** * Represents an "edit" action. * @see Desktop#edit(java.io.File) */ EDIT, /** * Represents a "print" action. * @see Desktop#print(java.io.File) */ PRINT, /** * Represents a "mail" action. * @see Desktop#mail() * @see Desktop#mail(java.net.URI) */ MAIL, /** * Represents a "browse" action. * @see Desktop#browse(java.net.URI) */ BROWSE }; /** * Returns the <code>Desktop</code> instance of the current * browser context. On some platforms the Desktop API may not be * supported; use the {@link #isDesktopSupported} method to * determine if the current desktop is supported. * @return the Desktop instance of the current browser context * @throws HeadlessException if {@link GraphicsEnvironment#isHeadless()} * returns {@code true} * @throws UnsupportedOperationException if this class is not supported * on the current platform * @see #isDesktopSupported() * @see java.awt.GraphicsEnvironment#isHeadless */ public static synchronized Desktop getDesktop() /** * Tests whether this class is supported on the current platform. * If it's supported, use {@link #getDesktop()} to retrieve an * instance. * * @return <code>true</code> if this class is supported on the * current platform; <code>false</code> otherwise * @see #getDesktop() */ public static boolean isDesktopSupported() /** * Tests whether an action is supported on the current platform. * * <p>Even when the platform supports an action, a file or URI may * not have a registered application for the action. For example, * most of the platforms support the {@link Desktop.Action#OPEN} * action. But for a specific file, there may not be an * application registered to open it. In this case, {@link * #isSupported} may return {@code true}, but the corresponding * action method will throw an {@link IOException}. * * @param action the specified {@link #Action} * @return <code>true</code> if the specified action is supported on * the current platform; <code>false</code> otherwise * @see Desktop.Action */ public boolean isSupported(Action action) /** * Launches the associated application to open the file. * <p> * If the specified file is a directory, the file manager of the current * platform is launched to open it. * * @param file the file to be opened with the associated application * @throws NullPointerException if {@code file} is {@code null} * @throws IllegalArgumentException if the specified file dosen't exist * @throws UnsupportedOperationException if the current platform * does not support the {@link Desktop.Action#OPEN} action * @throws IOException if the specified file has no associated application, * or the associated application fails to be launched * @throws SecurityException if a security manager exists and its * {@link java.lang.SecurityManager#checkRead(java.lang.String)} * method denies read access to the file, or it denies the * <code>AWTPermission("showWindowWithoutWarningBanner")</code> * permission, or the calling thread is not allowed to create a * subprocess * @see java.awt.AWTPermission */ public void open(File file) throws IOException /** * Launches the associated editor application and opens a file for editing. * * @param file the file to be opened for editing * @throws NullPointerException if the specified file is {@code null} * @throws IllegalArgumentException if the specified file doesn't exist * @throws UnsupportedOperationException if the current platform * does not support the {@link Desktop.Action#EDIT} action * @throws IOException if the specified file has no associated editor, or * the associated application fails to be launched * @throws SecurityException if a security manager exists and its * {@link java.lang.SecurityManager#checkRead(java.lang.String)} * method denies read access to the file, or {@link * java.lang.SecurityManager#checkWrite(java.lang.String)} method * denies write access to the file, or it denies the * <code>AWTPermission("showWindowWithoutWarningBanner")</code> * permission, or the calling thread is not allowed to create a * subprocess * @see java.awt.AWTPermission */ public void edit(File file) throws IOException /** * Prints a file with the native desktop printing facility, using * the associated application's print command. * * @param file the file to be printed * @throws NullPointerException if the specified file is {@code null} * @throws IllegalArgumentException if the specified file doesn't exist * @throws UnsupportedOperationException if the current platform * does not support the {@link Desktop.Action#PRINT} action * @throws IOException if the specified file has no associated application * that can be used to print it * @throws SecurityException if a security manager exists and its * {@link java.lang.SecurityManager#checkRead(java.lang.String)} * method denies read access to the file, or its {@link * java.lang.SecurityManager#checkPrintJobAccess()} method denies * the permission to print the file, or the calling thread is not * allowed to create a subprocess */ public void print(File file) throws IOException /** * Launches the user default browser to display a URI if this is an URI the * browser can handle. Otherwise, launches the default handler application * for the URI depending on the protocol and path (as defined in the * <code>URI</code> class). * * @param uri the URI to be displayed in the user default browser * @throws NullPointerException if {@code uri} is {@code null} * @throws UnsupportedOperationException if the current platform does not * support the {@link Desktop.Action#BROWSE} action * @throws IOException if the user default browser is not found, * or it fails to be launched, or the default handler application * failed to be launched * @throws SecurityException if a security manager exists and it * denies the * <code>AWTPermission("showWindowWithoutWarningBanner")</code> * permission, or the calling thread is not allowed to create a * subprocess * @see java.net.URI * @see java.awt.AWTPermission */ public void browse(URI uri) throws IOException /** * Launches the mail composing window of the user default mail client. * * @throws UnsupportedOperationException if the current platform does not * support the {@link Desktop.Action#MAIL} action * @throws IOException if the user default mail client is not found, * or it fails to be launched * @throws SecurityException if a security manager exists and it * denies the * <code>AWTPermission("showWindowWithoutWarningBanner")</code> * permission, or the calling thread is not allowed to create a * subprocess * @see java.awt.AWTPermission */ public void mail() throws IOException /** * Launches the mail composing window of the user default mail client, * filling the message fields specified by a {@code mailto:} URI. * * <p> A <code>mailto:</code> URI can specify message fields * including <i>"to"</i>, <i>"cc"</i>, <i>"subject"</i>, * <i>"body"</i>, etc. See <a * href="http://www.ietf.org/rfc/rfc2368.txt">The mailto URL * scheme (RFC 2368)</a> for the {@code mailto:} URI specification details. * * @param mailtoURI the specified {@code mailto:} URI * @throws NullPointerException if the specified URI is {@code null} * @throws IllegalArgumentException if the URI scheme is not * <code>"mailto"</code> * @throws UnsupportedOperationException if the current platform does not * support the {@link Desktop.Action#MAIL} action * @throws IOException if the user default mail client is not found or * fails to be launched * @throws SecurityException if a security manager exists and it * denies the * <code>AWTPermission("showWindowWithoutWarningBanner")</code> * permission, or the calling thread is not allowed to create a * subprocess * @see java.net.URI * @see java.awt.AWTPermission */ public void mail(URI mailtoURI) throws IOException } For other details, see CCC http://ccc.sfbay/6255196 ###@###.### 2005-06-26 04:28:49 GMT
2005-04-14