Click here to Skip to main content
15,897,891 members
Articles / Web Development / ASP.NET

HTMLEditor Provider - How to write a custom provider for ASP.NET 2.0

Rate me:
Please Sign up or sign in to vote.
4.75/5 (29 votes)
5 Sep 200614 min read 123K   2.4K   123  
A tutorial on how to use the Provider Templates to create your own provider.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
	<head>
		<title>GNU Lesser General Public License</title>
		<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
		<STYLE>
			BODY { FONT-SIZE: 12px }
		</STYLE>
	</head>
	<body>
		<H3>GNU Lesser General Public License</H3>
		<TT>
			<P>Version 2.1, February 1999</P>
			<BLOCKQUOTE>
				<P>Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite 
					330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute 
					verbatim copies of this license document, but changing it is not allowed.</P>
				<P>[This is the first released version of the Lesser GPL. It also counts as the 
					successor of the GNU Library Public License, version 2, hence the version 
					number 2.1.]</P>
			</BLOCKQUOTE>
			<H4>Preamble</H4>
			<P>The licenses for most software are designed to take away your freedom to share 
				and change it. By contrast, the GNU General Public Licenses are intended to 
				guarantee your freedom to share and change free software--to make sure the 
				software is free for all its users.
			</P>
			<P>This license, the Lesser General Public License, applies to some specially 
				designated software packages--typically libraries--of the Free Software 
				Foundation and other authors who decide to use it. You can use it too, but we 
				suggest you first think carefully about whether this license or the ordinary 
				General Public License is the better strategy to use in any particular case, 
				based on the explanations below.
			</P>
			<P>When we speak of free software, we are referring to freedom of use, not price. 
				Our General Public Licenses are designed to make sure that you have the freedom 
				to distribute copies of free software (and charge for this service if you 
				wish); that you receive source code or can get it if you want it; that you can 
				change the software and use pieces of it in new free programs; and that you are 
				informed that you can do these things.</P>
			<P>To protect your rights, we need to make restrictions that forbid distributors to 
				deny you these rights or to ask you to surrender these rights. These 
				restrictions translate to certain responsibilities for you if you distribute 
				copies of the library or if you modify it.
			</P>
			<P>For example, if you distribute copies of the library, whether gratis or for a 
				fee, you must give the recipients all the rights that we gave you. You must 
				make sure that they, too, receive or can get the source code. If you link other 
				code with the library, you must provide complete object files to the 
				recipients, so that they can relink them with the library after making changes 
				to the library and recompiling it. And you must show them these terms so they 
				know their rights.
			</P>
			<P>We protect your rights with a two-step method: (1) we copyright the library, and 
				(2) we offer you this license, which gives you legal permission to copy, 
				distribute and/or modify the library.
			</P>
			<P>To protect each distributor, we want to make it very clear that there is no 
				warranty for the free library. Also, if the library is modified by someone else 
				and passed on, the recipients should know that what they have is not the 
				original version, so that the original author's reputation will not be affected 
				by problems that might be introduced by others.
			</P>
			<P>Finally, software patents pose a constant threat to the existence of any free 
				program. We wish to make sure that a company cannot effectively restrict the 
				users of a free program by obtaining a restrictive license from a patent 
				holder. Therefore, we insist that any patent license obtained for a version of 
				the library must be consistent with the full freedom of use specified in this 
				license.
			</P>
			<P>Most GNU software, including some libraries, is covered by the ordinary GNU 
				General Public License. This license, the GNU Lesser General Public License, 
				applies to certain designated libraries, and is quite different from the 
				ordinary General Public License. We use this license for certain libraries in 
				order to permit linking those libraries into non-free programs.
			</P>
			<P>When a program is linked with a library, whether statically or using a shared 
				library, the combination of the two is legally speaking a combined work, a 
				derivative of the original library. The ordinary General Public License 
				therefore permits such linking only if the entire combination fits its criteria 
				of freedom. The Lesser General Public License permits more lax criteria for 
				linking other code with the library.
			</P>
			<P>We call this license the "Lesser" General Public License because it does Less to 
				protect the user's freedom than the ordinary General Public License. It also 
				provides other free software developers Less of an advantage over competing 
				non-free programs. These disadvantages are the reason we use the ordinary 
				General Public License for many libraries. However, the Lesser license provides 
				advantages in certain special circumstances.
			</P>
			<P>For example, on rare occasions, there may be a special need to encourage the 
				widest possible use of a certain library, so that it becomes a de-facto 
				standard. To achieve this, non-free programs must be allowed to use the 
				library. A more frequent case is that a free library does the same job as 
				widely used non-free libraries. In this case, there is little to gain by 
				limiting the free library to free software only, so we use the Lesser General 
				Public License.
			</P>
			<P>In other cases, permission to use a particular library in non-free programs 
				enables a greater number of people to use a large body of free software. For 
				example, permission to use the GNU C Library in non-free programs enables many 
				more people to use the whole GNU operating system, as well as its variant, the 
				GNU/Linux operating system.
			</P>
			<P>Although the Lesser General Public License is Less protective of the users' 
				freedom, it does ensure that the user of a program that is linked with the 
				Library has the freedom and the wherewithal to run that program using a 
				modified version of the Library.
			</P>
			<P>The precise terms and conditions for copying, distribution and modification 
				follow. Pay close attention to the difference between a "work based on the 
				library" and a "work that uses the library". The former contains code derived 
				from the library, whereas the latter must be combined with the library in order 
				to run.
			</P>
			<H4>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</H4>
			<P><STRONG>0.</STRONG> This License Agreement applies to any software library or 
				other program which contains a notice placed by the copyright holder or other 
				authorized party saying it may be distributed under the terms of this Lesser 
				General Public License (also called "this License"). Each licensee is addressed 
				as "you".</P>
			<P>A "library" means a collection of software functions and/or data prepared so as 
				to be conveniently linked with application programs (which use some of those 
				functions and data) to form executables.
			</P>
			<P>The "Library", below, refers to any such software library or work which has been 
				distributed under these terms. A "work based on the Library" means either the 
				Library or any derivative work under copyright law: that is to say, a work 
				containing the Library or a portion of it, either verbatim or with 
				modifications and/or translated straightforwardly into another language. 
				(Hereinafter, translation is included without limitation in the term 
				"modification".)
			</P>
			<P>"Source code" for a work means the preferred form of the work for making 
				modifications to it. For a library, complete source code means all the source 
				code for all modules it contains, plus any associated interface definition 
				files, plus the scripts used to control compilation and installation of the 
				library.</P>
			<P>Activities other than copying, distribution and modification are not covered by 
				this License; they are outside its scope. The act of running a program using 
				the Library is not restricted, and output from such a program is covered only 
				if its contents constitute a work based on the Library (independent of the use 
				of the Library in a tool for writing it). Whether that is true depends on what 
				the Library does and what the program that uses the Library does.
			</P>
			<P><STRONG>1.</STRONG> You may copy and distribute verbatim copies of the Library's 
				complete source code as you receive it, in any medium, provided that you 
				conspicuously and appropriately publish on each copy an appropriate copyright 
				notice and disclaimer of warranty; keep intact all the notices that refer to 
				this License and to the absence of any warranty; and distribute a copy of this 
				License along with the Library.
			</P>
			<P>You may charge a fee for the physical act of transferring a copy, and you may at 
				your option offer warranty protection in exchange for a fee.
			</P>
			<P><STRONG>2.</STRONG> You may modify your copy or copies of the Library or any 
				portion of it, thus forming a work based on the Library, and copy and 
				distribute such modifications or work under the terms of Section 1 above, 
				provided that you also meet all of these conditions:
			</P>
			<BLOCKQUOTE>
				<P>a) The modified work must itself be a software library.
				</P>
				<P>b) You must cause the files modified to carry prominent notices stating that you 
					changed the files and the date of any change.</P>
				<P>c) You must cause the whole of the work to be licensed at no charge to all third 
					parties under the terms of this License.
				</P>
				<P>d) If a facility in the modified Library refers to a function or a table of data 
					to be supplied by an application program that uses the facility, other than as 
					an argument passed when the facility is invoked, then you must make a good 
					faith effort to ensure that, in the event an application does not supply such 
					function or table, the facility still operates, and performs whatever part of 
					its purpose remains meaningful.
				</P>
				<P>(For example, a function in a library to compute square roots has a purpose that 
					is entirely well-defined independent of the application. Therefore, Subsection 
					2d requires that any application-supplied function or table used by this 
					function must be optional: if the application does not supply it, the square 
					root function must still compute square roots.)
				</P>
				<P>These requirements apply to the modified work as a whole. If identifiable 
					sections of that work are not derived from the Library, and can be reasonably 
					considered independent and separate works in themselves, then this License, and 
					its terms, do not apply to those sections when you distribute them as separate 
					works. But when you distribute the same sections as part of a whole which is a 
					work based on the Library, the distribution of the whole must be on the terms 
					of this License, whose permissions for other licensees extend to the entire 
					whole, and thus to each and every part regardless of who wrote it.
				</P>
				<P>Thus, it is not the intent of this section to claim rights or contest your 
					rights to work written entirely by you; rather, the intent is to exercise the 
					right to control the distribution of derivative or collective works based on 
					the Library.
				</P>
				<P>In addition, mere aggregation of another work not based on the Library with the 
					Library (or with a work based on the Library) on a volume of a storage or 
					distribution medium does not bring the other work under the scope of this 
					License.
				</P>
			</BLOCKQUOTE>
			<P><STRONG>3.</STRONG> You may opt to apply the terms of the ordinary GNU General 
				Public License instead of this License to a given copy of the Library. To do 
				this, you must alter all the notices that refer to this License, so that they 
				refer to the ordinary GNU General Public License, version 2, instead of to this 
				License. (If a newer version than version 2 of the ordinary GNU General Public 
				License has appeared, then you can specify that version instead if you wish.) 
				Do not make any other change in these notices.
			</P>
			<P>Once this change is made in a given copy, it is irreversible for that copy, so 
				the ordinary GNU General Public License applies to all subsequent copies and 
				derivative works made from that copy.
			</P>
			<P>This option is useful when you wish to copy part of the code of the Library into 
				a program that is not a library.
			</P>
			<P><STRONG>4.</STRONG> You may copy and distribute the Library (or a portion or 
				derivative of it, under Section 2) in object code or executable form under the 
				terms of Sections 1 and 2 above provided that you accompany it with the 
				complete corresponding machine-readable source code, which must be distributed 
				under the terms of Sections 1 and 2 above on a medium customarily used for 
				software interchange.
			</P>
			<P>If distribution of object code is made by offering access to copy from a 
				designated place, then offering equivalent access to copy the source code from 
				the same place satisfies the requirement to distribute the source code, even 
				though third parties are not compelled to copy the source along with the object 
				code.</P>
			<P><STRONG>5.</STRONG> A program that contains no derivative of any portion of the 
				Library, but is designed to work with the Library by being compiled or linked 
				with it, is called a "work that uses the Library". Such a work, in isolation, 
				is not a derivative work of the Library, and therefore falls outside the scope 
				of this License.
			</P>
			<P>However, linking a "work that uses the Library" with the Library creates an 
				executable that is a derivative of the Library (because it contains portions of 
				the Library), rather than a "work that uses the library". The executable is 
				therefore covered by this License. Section 6 states terms for distribution of 
				such executables.
			</P>
			<P>When a "work that uses the Library" uses material from a header file that is 
				part of the Library, the object code for the work may be a derivative work of 
				the Library even though the source code is not. Whether this is true is 
				especially significant if the work can be linked without the Library, or if the 
				work is itself a library. The threshold for this to be true is not precisely 
				defined by law.
			</P>
			<P>If such an object file uses only numerical parameters, data structure layouts 
				and accessors, and small macros and small inline functions (ten lines or less 
				in length), then the use of the object file is unrestricted, regardless of 
				whether it is legally a derivative work. (Executables containing this object 
				code plus portions of the Library will still fall under Section 6.)
			</P>
			<P>Otherwise, if the work is a derivative of the Library, you may distribute the 
				object code for the work under the terms of Section 6. Any executables 
				containing that work also fall under Section 6, whether or not they are linked 
				directly with the Library itself.
			</P>
			<P><STRONG>6.</STRONG> As an exception to the Sections above, you may also combine 
				or link a "work that uses the Library" with the Library to produce a work 
				containing portions of the Library, and distribute that work under terms of 
				your choice, provided that the terms permit modification of the work for the 
				customer's own use and reverse engineering for debugging such modifications.
			</P>
			<P>You must give prominent notice with each copy of the work that the Library is 
				used in it and that the Library and its use are covered by this License. You 
				must supply a copy of this License. If the work during execution displays 
				copyright notices, you must include the copyright notice for the Library among 
				them, as well as a reference directing the user to the copy of this License. 
				Also, you must do one of these things:
			</P>
			<BLOCKQUOTE>
				<P>a) Accompany the work with the complete corresponding machine-readable source 
					code for the Library including whatever changes were used in the work (which 
					must be distributed under Sections 1 and 2 above); and, if the work is an 
					executable linked with the Library, with the complete machine-readable "work 
					that uses the Library", as object code and/or source code, so that the user can 
					modify the Library and then relink to produce a modified executable containing 
					the modified Library. (It is understood that the user who changes the contents 
					of definitions files in the Library will not necessarily be able to recompile 
					the application to use the modified definitions.)
				</P>
				<P>b) Use a suitable shared library mechanism for linking with the Library. A 
					suitable mechanism is one that (1) uses at run time a copy of the library 
					already present on the user's computer system, rather than copying library 
					functions into the executable, and (2) will operate properly with a modified 
					version of the library, if the user installs one, as long as the modified 
					version is interface-compatible with the version that the work was made with.
				</P>
				<P>c) Accompany the work with a written offer, valid for at least three years, to 
					give the same user the materials specified in Subsection 6a, above, for a 
					charge no more than the cost of performing this distribution.
				</P>
				<P>d) If distribution of the work is made by offering access to copy from a 
					designated place, offer equivalent access to copy the above specified materials 
					from the same place.
				</P>
				<P>e) Verify that the user has already received a copy of these materials or that 
					you have already sent this user a copy.</P>
			</BLOCKQUOTE>
			<P>For an executable, the required form of the "work that uses the Library" must 
				include any data and utility programs needed for reproducing the executable 
				from it. However, as a special exception, the materials to be distributed need 
				not include anything that is normally distributed (in either source or binary 
				form) with the major components (compiler, kernel, and so on) of the operating 
				system on which the executable runs, unless that component itself accompanies 
				the executable.
			</P>
			<P>It may happen that this requirement contradicts the license restrictions of 
				other proprietary libraries that do not normally accompany the operating 
				system. Such a contradiction means you cannot use both them and the Library 
				together in an executable that you distribute.
			</P>
			<P><STRONG>7.</STRONG> You may place library facilities that are a work based on 
				the Library side-by-side in a single library together with other library 
				facilities not covered by this License, and distribute such a combined library, 
				provided that the separate distribution of the work based on the Library and of 
				the other library facilities is otherwise permitted, and provided that you do 
				these two things:
			</P>
			<BLOCKQUOTE>
				<P>a) Accompany the combined library with a copy of the same work based on the 
					Library, uncombined with any other library facilities. This must be distributed 
					under the terms of the Sections above.
				</P>
				<P>b) Give prominent notice with the combined library of the fact that part of it 
					is a work based on the Library, and explaining where to find the accompanying 
					uncombined form of the same work.</P>
			</BLOCKQUOTE>
			<P><STRONG>8.</STRONG> You may not copy, modify, sublicense, link with, or 
				distribute the Library except as expressly provided under this License. Any 
				attempt otherwise to copy, modify, sublicense, link with, or distribute the 
				Library is void, and will automatically terminate your rights under this 
				License. However, parties who have received copies, or rights, from you under 
				this License will not have their licenses terminated so long as such parties 
				remain in full compliance.
			</P>
			<P><STRONG>9.</STRONG> You are not required to accept this License, since you have 
				not signed it. However, nothing else grants you permission to modify or 
				distribute the Library or its derivative works. These actions are prohibited by 
				law if you do not accept this License. Therefore, by modifying or distributing 
				the Library (or any work based on the Library), you indicate your acceptance of 
				this License to do so, and all its terms and conditions for copying, 
				distributing or modifying the Library or works based on it.
			</P>
			<P><STRONG>10.</STRONG> Each time you redistribute the Library (or any work based 
				on the Library), the recipient automatically receives a license from the 
				original licensor to copy, distribute, link with or modify the Library subject 
				to these terms and conditions. You may not impose any further restrictions on 
				the recipients' exercise of the rights granted herein. You are not responsible 
				for enforcing compliance by third parties with this License.
			</P>
			<P><STRONG>11.</STRONG> If, as a consequence of a court judgment or allegation of 
				patent infringement or for any other reason (not limited to patent issues), 
				conditions are imposed on you (whether by court order, agreement or otherwise) 
				that contradict the conditions of this License, they do not excuse you from the 
				conditions of this License. If you cannot distribute so as to satisfy 
				simultaneously your obligations under this License and any other pertinent 
				obligations, then as a consequence you may not distribute the Library at all. 
				For example, if a patent license would not permit royalty-free redistribution 
				of the Library by all those who receive copies directly or indirectly through 
				you, then the only way you could satisfy both it and this License would be to 
				refrain entirely from distribution of the Library.
			</P>
			<P>If any portion of this section is held invalid or unenforceable under any 
				particular circumstance, the balance of the section is intended to apply, and 
				the section as a whole is intended to apply in other circumstances.
			</P>
			<P>It is not the purpose of this section to induce you to infringe any patents or 
				other property right claims or to contest validity of any such claims; this 
				section has the sole purpose of protecting the integrity of the free software 
				distribution system which is implemented by public license practices. Many 
				people have made generous contributions to the wide range of software 
				distributed through that system in reliance on consistent application of that 
				system; it is up to the author/donor to decide if he or she is willing to 
				distribute software through any other system and a licensee cannot impose that 
				choice.
			</P>
			<P>This section is intended to make thoroughly clear what is believed to be a 
				consequence of the rest of this License.
			</P>
			<P><STRONG>12.</STRONG> If the distribution and/or use of the Library is restricted 
				in certain countries either by patents or by copyrighted interfaces, the 
				original copyright holder who places the Library under this License may add an 
				explicit geographical distribution limitation excluding those countries, so 
				that distribution is permitted only in or among countries not thus excluded. In 
				such case, this License incorporates the limitation as if written in the body 
				of this License.
			</P>
			<P><STRONG>13.</STRONG> The Free Software Foundation may publish revised and/or new 
				versions of the Lesser General Public License from time to time. Such new 
				versions will be similar in spirit to the present version, but may differ in 
				detail to address new problems or concerns.</P>
			<P>Each version is given a distinguishing version number. If the Library specifies 
				a version number of this License which applies to it and "any later version", 
				you have the option of following the terms and conditions either of that 
				version or of any later version published by the Free Software Foundation. If 
				the Library does not specify a license version number, you may choose any 
				version ever published by the Free Software Foundation.
			</P>
			<P><STRONG>14.</STRONG> If you wish to incorporate parts of the Library into other 
				free programs whose distribution conditions are incompatible with these, write 
				to the author to ask for permission. For software which is copyrighted by the 
				Free Software Foundation, write to the Free Software Foundation; we sometimes 
				make exceptions for this. Our decision will be guided by the two goals of 
				preserving the free status of all derivatives of our free software and of 
				promoting the sharing and reuse of software generally.
			</P>
			<P>NO WARRANTY
			</P>
			<P><STRONG>15. </STRONG>BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO 
				WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT 
				WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 
				PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR 
				IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
				MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE 
				QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE 
				DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 
				CORRECTION.
			</P>
			<P><STRONG>16.</STRONG> IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO 
				IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 
				REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 
				INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT 
				OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS 
				OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 
				PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN 
				IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 
				DAMAGES.
			</P>
			<H4><STRONG>END OF TERMS AND CONDITIONS</STRONG></H4>
		</TT>
	</body>
</html>

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


Written By
Systems Engineer Virtual RadioLogic
United States United States
Todd Davis has been working in web and application development for several years, using Silverlight, ASP.NET, VB.NET, C#, C++ and Javascript, as well as a great deal of work with SQL server and IIS.

He currently works for Virtual Radiologic in Eden Prairie, MN, however he is better known for his varied work in the open source community, especially the DotNetNuke project for which he provided several world-renowned training videos and modules. A huge advocate of open source and open knowledge sharing, everything on his website (www.SeaburyDesign.com) is always offered for free.

Whenever he is not actively coding at his laptop (a rarity to be sure), he can be found woodworking, walking with his wife and kids, or motoring along the back roads of MN on his Harley Davidson Fatboy.

Comments and Discussions