150 lines
6.7 KiB
Text
150 lines
6.7 KiB
Text
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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module com { module sun { module star { module ucb {
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/** makes it possible to query/register/deregister content providers.
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@version 1.0
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@see XContentProvider
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*/
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published interface XContentProviderManager: com::sun::star::uno::XInterface
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{
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/** registers a content provider for a specific URL template.
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@see XContentIdentifier
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@param Provider
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the content provider to register.
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<p>This may be `NULL`, in which case a later
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XContentProvider::queryContent() with an
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XContentIdentifier that matches the <var>Scheme</var>
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will simply return `NULL`. These "dummy" content providers are useful
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in combination with other content providers that are registered on a
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wildcard URL template: For example, imagine that you want to route all
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http URLs to a HTTP content provider, but want to block all URLs for
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the server <code>www.dont.go</code>. One solution would be to register
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the HTTP content provider on the <var>Scheme</var> <code>http</code>,
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and to register a "dummy" (i.e., `NULL`) content provider on the
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<var>Scheme</var> <code>"http://www.dont.go"([/?#].*)?</code>.
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@param Scheme
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the URL scheme for the provided contents. More generally, this may not
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only be a URL scheme, but a URL template.
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<p>A URL template is a regular expression (represented as a string) that
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specifies a subset of the set of all possible URLs (this subset
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consists of exactly those URLs that match the regular expression). The
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language to denote the regular expressions is initially quite limited,
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but it may be extended in the future:
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<p><ul>
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<li><code>regexp = scheme / simple / translation</code></li>
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<li><code>scheme = ALPHA *(ALPHA / DIGIT / "+" / "-" / ".")</code></li>
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<li><code>simple = simple-prefix / simple-authority / simple-domain</code></li>
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<li><code>translation = trans-prefix / trans-authority / trans-domain</code></li>
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<li><code>simple-prefix = [string] ".*"</code></li>
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<li><code>trans-prefix = [string] "(.*)->" [string] "\1"</code></li>
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<li><code>simple-authority = [string] "([/?#].*)?"</code></li>
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<li><code>trans-authority = [string] "(([/?#].*)?)->" string "\1"</code></li>
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<li><code>simple-domain = [string] "[^/?#]*" string "([/?#].*)?"</code></li>
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<li><code>trans-domain = [string] "([^/?#]*" string "([/?#].*)?)->" string "\1"</code></li>
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<li><code>string = DQUOTE 1*(schar / sescape) DQUOTE ; DQUOTE is "</code></li>
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<li><code>schar = < any UTF-16 character except " or \></code></li>
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<li><code>sescape = "\" (DQUOTE / "\")</code></li>
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</ul>
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<p>A <code><scheme>:</code> matches any URL of exactly the given
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scheme (ignoring case), keeping the extension from URL schemes to URL
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templates backwards compatible. The <code><simple>:</code>
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regexps match any URL starting with a given string literal, followed
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by arbitrary characters (<code><simple-prefix>:</code>), or
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by arbitrary characters that start with one of '/', '?', or '#', if any
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(<code><simple-authority>:</code>), or by arbitrary characters not
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including any of '/', '?', or '#', followed by a given string literal,
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followed by arbitrary characters that start with one of '/', '?', or
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'#', if any. The comparison of string literals is done ignoring the
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case of ASCII letters. The <code><translation>:</code> regexps
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match the same URLs as their <code><simple>:</code> counterparts,
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but they also describe how a (local) URL is mapped to another (remote)
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URL. This mapping is only relevant for methods of the
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RemoteAccessContentProvider's
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XParameterizedContentProvider interface; in all other
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cases, <code><translation>:</code> regexps have the same semantics
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as their <code><simple>:</code> counterparts.
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@param ReplaceExisting
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`TRUE`: replace the provider possibly registered for the given URL
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template. The replaced provider will not be deregistered automatically!
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If the superseding provider gets deregistered, the superseded one will
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become active again.
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<p>`FALSE`: do not register, if another provider is already registered
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for the given URL template.
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@returns
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the replaced content provider, if there was one.
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*/
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com::sun::star::ucb::XContentProvider registerContentProvider(
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[in] com::sun::star::ucb::XContentProvider Provider,
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[in] string Scheme,
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[in] boolean ReplaceExisting )
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raises( com::sun::star::ucb::DuplicateProviderException );
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/** deregisters a content provider.
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@param Provider
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a content provider to deregister.
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@param Scheme
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the URL scheme for the provided contents. More generally, this
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may not only be a URL scheme, but a URL template (see
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registerContentProvider() for a discussion of URL
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templates).
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*/
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void deregisterContentProvider(
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[in] com::sun::star::ucb::XContentProvider Provider,
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[in] string Scheme );
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/** returns a list of information on all registered content providers.
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@returns
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a list information on content providers.
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*/
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sequence<com::sun::star::ucb::ContentProviderInfo> queryContentProviders();
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/** returns the currently active content provider for a content
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identifier.
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@param Identifier
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a content identifier (i.e., a URL).
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@returns
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a content provider, or null.
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*/
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com::sun::star::ucb::XContentProvider queryContentProvider(
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[in] string Identifier );
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};
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}; }; }; };
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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