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/**
* @file llurlregistry.h
* @author Martin Reddy
* @brief Contains a set of Url types that can be matched in a string
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLURLREGISTRY_H
#define LL_LLURLREGISTRY_H
#include "llurlentry.h"
#include "llurlmatch.h"
#include "llsingleton.h"
#include "llstring.h"
#include <string>
#include <vector>
/// This default callback for findUrl() simply ignores any label updates
void LLUrlRegistryNullCallback(const std::string &url, const std::string &label);
///
/// LLUrlRegistry is a singleton that contains a set of Url types that
/// can be matched in string. E.g., http:// or secondlife:// Urls.
///
/// Clients call the findUrl() method on a string to locate the first
/// occurence of a supported Urls in that string. If findUrl() returns
/// true, the LLUrlMatch object will be updated to describe the Url
/// that was matched, including a label that can be used to hyperlink
/// the Url, an icon to display next to the Url, and a XUI menu that
/// can be used as a popup context menu for that Url.
///
/// New Url types can be added to the registry with the registerUrl
/// method. E.g., to add support for a new secondlife:///app/ Url.
///
/// Computing the label for a Url could involve a roundtrip request
/// to the server (e.g., to find the actual agent or group name).
/// As such, you can provide a callback method that will get invoked
/// when a new label is available for one of your matched Urls.
///
class LLUrlRegistry : public LLSingleton<LLUrlRegistry>
{
public:
~LLUrlRegistry();
/// add a new Url handler to the registry (will be freed on destruction)
void registerUrl(LLUrlEntryBase *url);
/// get the next Url in an input string, starting at a given character offset
/// your callback is invoked if the matched Url's label changes in the future
bool findUrl(const std::string &text, LLUrlMatch &match,
const LLUrlLabelCallback &cb = &LLUrlRegistryNullCallback);
/// a slightly less efficient version of findUrl for wide strings
bool findUrl(const LLWString &text, LLUrlMatch &match,
const LLUrlLabelCallback &cb = &LLUrlRegistryNullCallback);
// return true if the given string contains a URL that findUrl would match
bool hasUrl(const std::string &text);
bool hasUrl(const LLWString &text);
// return true if the given string is a URL that findUrl would match
bool isUrl(const std::string &text);
bool isUrl(const LLWString &text);
private:
LLUrlRegistry();
friend class LLSingleton<LLUrlRegistry>;
std::vector<LLUrlEntryBase *> mUrlEntry;
};
#endif
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