Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 179 insertions, 0 deletions

diff --git a/uriloader/exthandler/nsIHandlerService.idl b/uriloader/exthandler/nsIHandlerService.idl
new file mode 100644
index 0000000000..890c8ab59d
--- /dev/null
+++ b/uriloader/exthandler/nsIHandlerService.idl
@@ -0,0 +1,179 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsIHandlerInfo;
+interface nsISimpleEnumerator;
+interface nsIMIMEInfo;
+
+[scriptable, uuid(53f0ad17-ec62-46a1-adbc-efccc06babcd)]
+interface nsIHandlerService : nsISupports
+{
+  /**
+   * Asynchronously performs any IO that the nsIHandlerService needs to do
+   * before it can be of use.
+   */
+  void asyncInit();
+
+  /**
+   * Retrieve a list of all handlers in the datastore.  This list is not
+   * guaranteed to be in any particular order, and callers should not assume
+   * it will remain in the same order in the future.
+   *
+   * @returns a list of all handlers in the datastore
+   */
+  nsISimpleEnumerator enumerate();
+
+  /**
+   * Fill a handler info object with information from the datastore.
+   *
+   * Note: because of the way the external helper app service currently mixes
+   * OS and user handler info in the same handler info object, this method
+   * takes an existing handler info object (probably retrieved from the OS)
+   * and "fills it in" with information from the datastore, overriding any
+   * existing properties on the object with properties from the datastore.
+   *
+   * Ultimately, however, we're going to separate OS and user handler info
+   * into separate objects, at which point this method should be renamed to
+   * something like "get" or "retrieve", take a class and type (or perhaps
+   * a type whose class can be determined by querying the type, for example
+   * an nsIContentType which is also an nsIMIMEType or an nsIProtocolScheme),
+   * and return a handler info object representing only the user info.
+   *
+   * Note: if you specify an override type, then the service will fill in
+   * the handler info object with information about that type instead of
+   * the type specified by the object's nsIHandlerInfo::type attribute.
+   *
+   * This is useful when you are trying to retrieve information about a MIME
+   * type that doesn't exist in the datastore, but you have a file extension
+   * for that type, and nsIHandlerService::getTypeFromExtension returns another
+   * MIME type that does exist in the datastore and can handle that extension.
+   *
+   * For example, the user clicks on a link, and the content has a MIME type
+   * that isn't in the datastore, but the link has a file extension, and that
+   * extension is associated with another MIME type in the datastore (perhaps
+   * an unofficial MIME type preceded an official one, like with image/x-png
+   * and image/png).
+   *
+   * In that situation, you can call this method to fill in the handler info
+   * object with information about that other type by passing the other type
+   * as the aOverrideType parameter.
+   *
+   * @param aHandlerInfo   the handler info object
+   * @param aOverrideType  a type to use instead of aHandlerInfo::type
+   *
+   * Note: if there is no information in the datastore about this type,
+   * this method throws NS_ERROR_NOT_AVAILABLE. Callers are encouraged to
+   * check exists() before calling fillHandlerInfo(), to prevent spamming the
+   * console with XPCOM exception errors.
+   */
+  void fillHandlerInfo(in nsIHandlerInfo aHandlerInfo,
+                       in ACString aOverrideType);
+
+  /**
+   * Save the preferred action, preferred handler, possible handlers, and
+   * always ask properties of the given handler info object to the datastore.
+   * Updates an existing record or creates a new one if necessary.
+   *
+   * Note: if preferred action is undefined or invalid, then we assume
+   * the default value nsIHandlerInfo::useHelperApp.
+   *
+   * @param aHandlerInfo  the handler info object
+   */
+  void store(in nsIHandlerInfo aHandlerInfo);
+
+  /**
+   * Whether or not a record for the given handler info object exists
+   * in the datastore. If the datastore is corrupt (or some other error
+   * is caught in the implementation), false will be returned.
+   *
+   * @param aHandlerInfo  a handler info object
+   *
+   * @returns whether or not a record exists
+   */
+  boolean exists(in nsIHandlerInfo aHandlerInfo);
+
+  /**
+   * Remove the given handler info object from the datastore.  Deletes all
+   * records associated with the object, including the preferred handler, info,
+   * and type records plus the entry in the list of types, if they exist.
+   * Otherwise, it does nothing and does not return an error.
+   *
+   * @param aHandlerInfo  the handler info object
+   */
+  void remove(in nsIHandlerInfo aHandlerInfo);
+
+  /**
+   * Get the MIME type mapped to the given file extension in the datastore.
+   *
+   * XXX If we ever support extension -> protocol scheme mappings, then this
+   * method should work for those as well.
+   *
+   * Note: in general, you should use nsIMIMEService::getTypeFromExtension
+   * to get a MIME type from a file extension, as that method checks a variety
+   * of other sources besides just the datastore.  Use this only when you want
+   * to specifically get only the mapping available in the datastore.
+   *
+   * @param aFileExtension  the file extension
+   *
+   * @returns the MIME type, if any; otherwise returns an empty string ("").
+   */
+  ACString getTypeFromExtension(in ACString aFileExtension);
+
+  /**
+   * Whether or not there is a handler known to the OS for the
+   * specified protocol type.
+   *
+   * @param aProtocolScheme scheme to check for support
+   *
+   * @returns whether or not a handler exists
+   */
+  boolean existsForProtocolOS(in ACString aProtocolScheme);
+
+  /**
+   * Whether or not there is a handler in the datastore or OS for
+   * the specified protocol type. If there is no handler in the datastore,
+   * falls back to a check for an OS handler.
+   *
+   * @param aProtocolScheme scheme to check for support
+   *
+   * @returns whether or not a handler exists
+   */
+  boolean existsForProtocol(in ACString aProtocolScheme);
+
+  /*
+   * This method only exists for nsOSHelperAppServiceChild using
+   * the ContentHandlerService implementation.
+   *
+   * Returns an nsIMIMEInfo for the provided MIME type and extension
+   * obtained from an OS lookup. If no handler is found for the type and
+   * extension, returns a generic nsIMIMEInfo object. The MIME type and
+   * extension can be the empty string. When the type and extension don't
+   * map to the same handler, the semantics/resolution are platform
+   * specific. See the platform implementations for details.
+   *
+   * @param aType           The MIME type to get handler information for.
+   * @param aFileExtension  The filename extension to use either alone
+   *                        or with the MIME type to get handler information
+   *                        for. UTF-8 encoded.
+   * @param [out] aFound    Out param indicating whether a MIMEInfo could
+   *                        be found for the provided type and/or extension.
+   *                        Set to false when neither extension nor the MIME
+   *                        type are mapped to a handler.
+   * @return                A nsIMIMEInfo object. This function must return
+   *                        a MIMEInfo object if it can allocate one. The
+   *                        only justifiable reason for not returning one is
+   *                        an out-of-memory error.
+   */
+  [noscript] nsIMIMEInfo getMIMEInfoFromOS(in ACString aType,
+                                           in ACString aFileExtension,
+                                           out boolean aFound);
+
+  /*
+   * Get a description for the application responsible for handling
+   * the provided protocol.
+   */
+  AString getApplicationDescription(in ACString aProtocolScheme);
+};