locator.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// Locator.h
//
// $Id: //poco/Main/XML/include/SAX/Locator.h#5 $
//
// SAX Locator Interface.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef SAX_Locator_INCLUDED
#define SAX_Locator_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef XML_XMLString_INCLUDED
#include "XML/XMLString.h"
#endif


XML_BEGIN


class XML_API Locator
	/// Interface for associating a SAX event with a document location.
	/// 
	/// If a SAX parser provides location information to the SAX application, it does so by 
	/// implementing this interface and then passing an instance to the application using the 
	/// content handler's setDocumentLocator method. The application can use the object to obtain 
	/// the location of any other SAX event in the XML source document.
	/// 
	/// Note that the results returned by the object will be valid only during the scope of each 
	/// callback method: the application will receive unpredictable results if it attempts to use 
	/// the locator at any other time, or after parsing completes.
	/// 
	/// SAX parsers are not required to supply a locator, but they are very strongly encouraged to 
	/// do so. If the parser supplies a locator, it must do so before reporting any other document 
	/// events. If no locator has been set by the time the application receives the startDocument event, 
	/// the application should assume that a locator is not available.
{
public:
	virtual XMLString getPublicId() const = 0;
		/// Return the public identifier for the current document event.
		/// 
		/// The return value is the public identifier of the document entity or of the external 
		/// parsed entity in which the markup triggering the event appears.

	virtual XMLString getSystemId() const = 0;
		/// Return the system identifier for the current document event.
		/// 
		/// The return value is the system identifier of the document entity or of the external 
		/// parsed entity in which the markup triggering the event appears.
		/// 
		/// If the system identifier is a URL, the parser must resolve it fully before passing 
		/// it to the application. For example, a file name must always be provided as a 
		/// file:... URL, and other kinds of relative URI are also resolved against their bases.

	virtual int getLineNumber() const = 0;
		/// Return the line number where the current document event ends.
		/// Lines are delimited by line ends, which are defined in the XML specification.
		/// 
		/// Warning: The return value from the method is intended only as an approximation for 
		/// the sake of diagnostics; it is not intended to provide sufficient information to 
		/// edit the character content of the original XML document. In some cases, these "line" 
		/// numbers match what would be displayed as columns, and in others they may not match the 
		/// source text due to internal entity expansion.
		/// 
		/// The return value is an approximation of the line number in the document entity or external 
		/// parsed entity where the markup triggering the event appears.
		/// 
		/// If possible, the SAX driver should provide the line position of the first character after 
		/// the text associated with the document event. The first line is line 1.

	virtual int getColumnNumber() const = 0;
		/// Return the column number where the current document event ends. 
		/// This is one-based number of characters since the last line end.
		/// 
		/// Warning: The return value from the method is intended only as an approximation 
		/// for the sake of diagnostics; it is not intended to provide sufficient information 
		/// to edit the character content of the original XML document. For example, when lines 
		/// contain combining character sequences, wide characters, surrogate pairs, or bi-directional 
		/// text, the value may not correspond to the column in a text editor's display.
		/// 
		/// The return value is an approximation of the column number in the document entity or external 
		/// parsed entity where the markup triggering the event appears.
		/// 
		/// If possible, the SAX driver should provide the line position of the first character after 
		/// the text associated with the document event. The first column in each line is column 1.

protected:
	virtual ~Locator();
};


XML_END


#endif // SAX_Locator_INCLUDED