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Gary Edwards

CodeLobster - Free portable PHP IDE with support Drupal, Smarty, WordPress, Joomla, JQu... - 0 views

www.codelobster.com

CodeLobster PHP css-editor html-editor JavaScript-editor

shared by Gary Edwards on 27 Sep 11 - Cached
  • Gary Edwards on 27 Sep 11
     
    I followed the reader comments for "7 Free CSS Editors", and CodeLobster was frequently mentioned.  Looks pretty good.  The free version includes:  HTML code inspector  CSS editor  JavaScript editor  PHP editor  PHP debugger Professional versions focus on Drupal, Joomla, WordPress, Symphony, CakePHP, Yii, and Facebook among others.  Good stuff for PHP work.
Gary Edwards

ODF Plugfest: Making office tools interoperable [LWN.net] - 0 views

lwn.net/410387

webodf ODF1.2 ODF HTML+ WebKit Gecko QTWebKit

shared by Gary Edwards on 10 Nov 10 - No Cached
  • ODF on the web An especially interesting project that was presented is WebODF, which wants to bring ODF to the web. Jos van den Oever started from the observation that a lot of office suites are moving into the "cloud". Examples are Microsoft Live Office, Google Docs, and Zoho. But where are the free software alternatives for the cloud? For OpenOffice.org, KOffice, AbiWord, and Gnumeric, there are none that have a cloud version with ODF support. That was the motivation for Jos to start a project to fill in this gap and let users view and edit ODF documents on the web without losing control of the document into some company's servers. The strategy Jos followed was to use just HTML and JavaScript for the web application. The application then loads the XML stream of the ODF document as is into the HTML document and puts it into the DOM tree. Styling is done by applying CSS rules that are directly derived from the <office:styles> and <office:automatic-styles> elements in the ODF document. That is how WebODF was born; it is a project with the initial goal of creating a simple ODF viewer and editor for offline and online use, implemented in HTML5. The small code base consists of one HTML5 file and eight JavaScript files, each of which is a few hundred lines of code. The most interesting part is that it doesn't need server-side code execution: the JavaScript code is executed in the user's browser and saving the document to the web server is done using WebDAV. It supports both the Gecko and WebKit HTML engines. There is also an implementation on top of QtWebKit, which is for better desktop integration, and an ODFKit implementation. This means that WebODF is an easy way to add ODF support to almost any application, be it in HTML, Gtk, or QML. KO GmbH has received funding from NLnet to improve the current WebODF prototype and see how far the idea goes. Interested readers can try the online demo.
  • Gary Edwards on 10 Nov 10
     
    Notification of this article also appeared in the Diigo Document Wars Group..... WebODF...   An especially interesting project that was presented is WebODF, which wants to bring ODF to the web. Jos van den Oever started from the observation that a lot of office suites are moving into the "cloud". Examples are Microsoft Live Office, Google Docs, and Zoho. But where are the free software alternatives for the cloud? For OpenOffice.org, KOffice, AbiWord, and Gnumeric, there are none that have a cloud version with ODF support. That was the motivation for Jos to start a project to fill in this gap and let users view and edit ODF documents on the web without losing control of the document into some company's servers. The strategy Jos followed was to use just HTML and JavaScript for the web application. The application then loads the XML stream of the ODF document as is into the HTML document and puts it into the DOM tree. Styling is done by applying CSS rules that are directly derived from the and elements in the ODF document. That is how WebODF was born; it is a project with the initial goal of creating a simple ODF viewer and editor for offline and online use, implemented in HTML5. The small code base consists of one HTML5 file and eight JavaScript files, each of which is a few hundred lines of code. The most interesting part is that it doesn't need server-side code execution: the JavaScript code is executed in the user's browser and saving the document to the web server is done using WebDAV. It supports both the Gecko and WebKit HTML engines. There is also an implementation on top of QtWebKit, which is for better desktop integration, and an ODFKit implementation. This means that WebODF is an easy way to add ODF support to almost any application, be it in HTML, Gtk, or QML. KO GmbH has received funding from NLnet to improve the current WebODF prototype and see how far the idea goes. Interested readers can try the online demo
Gary Edwards

Official Google Docs Blog: What's different about the new Google Docs? - 0 views

googledocs.blogspot.com/...ent-about-new-google-docs.html

google-apps gdocs google-docs wave OTXML

shared by Gary Edwards on 15 May 10 - Cached
  • Gary Edwards on 15 May 10
     
    The new Google documents To get around these problems, the new Google document editor doesn't use the browser to handle editable text. We wrote a brand new editing surface and layout engine, entirely in JavaScript. A new editing surface Let's start by talking about the editing surface, which processes all user input and makes the application feel like a regular editor. To you, the new editor looks like a fairly normal text box. But from the browser's perspective, it's a webpage with JavaScript that responds to any user action by dynamically changing what to display on each line. For example, the cursor you see is actually a thin, 2 pixel-wide div element that we manually place on the screen. When you click somewhere, we find the x and y coordinates of your click and draw the cursor at that position. This lets us do basic things like slanting the cursor for italicized text, and it also allows more powerful capabilities like showing multiple collaborators' cursors simultaneously, in the same document.
Gary Edwards

XML Production Workflows? Start with the Web and XHTML - 1 views

quod.lib.umich.edu/...n-workflows-start-with-the-web

OpenWeb XML XHTML-CSS HTML5-CSS3-JavaScript IDML

shared by Gary Edwards on 01 Nov 13 - No Cached
  • Challenges: Some Ugly Truths The challenges of building—and living with—an XML workflow are clear enough. The return on investment is a long-term proposition. Regardless of the benefits XML may provide, the starting reality is that it represents a very different way of doing things than the one we are familiar with. The Word Processing and Desktop Publishing paradigm, based on the promise of onscreen, WYSIWYG layout, is so dominant as to be practically inescapable. It has proven really hard to get from here to there, no matter how attractive XML might be on paper. A considerable amount of organizational effort and labour must be expended up front in order to realize the benefits. This is why XML is often referred to as an “investment”: you sink a bunch of time and money up front, and realize the benefits—greater flexibility, multiple output options, searching and indexing, and general futureproofing—later, over the long haul. It is not a short-term return proposition. And, of course, the returns you are able to realize from your XML investment are commensurate with what you put in up front: fine-grained, semantically rich tagging is going to give you more potential for searchability and recombination than a looser, more general-purpose approach, but it sure costs more. For instance, the Text Encoding Initiative (TEI) is the grand example of pouring enormous amounts of energy into the up-front tagging, with a very open-ended set of possibilities down the line. TEI helpfully defines a level to which most of us do not have to aspire.[5] But understanding this on a theoretical level is only part of the challenge. There are many practical issues that must be addressed. Software and labour are two of the most critical. How do you get the content into XML in the first place? Unfortunately, despite two decades of people doing SGML and XML, this remains an ugly question.
  • Practical Challenges In 2009, there is still no truly likeable—let alone standard—editing and authoring software for XML. For many (myself included), the high-water mark here was Adobe’s FrameMaker, substantially developed by the late 1990s. With no substantial market for it, it is relegated today mostly to the tech writing industry, unavailable for the Mac, and just far enough afield from the kinds of tools we use today that its adoption represents a significant hurdle. And FrameMaker was the best of the breed; most of the other software in decent circulation are programmers’ tools—the sort of things that, as Michael Tamblyn pointed out, encourage editors to drink at their desks. The labour question represents a stumbling block as well. The skill-sets and mind-sets that effective XML editors need have limited overlap with those needed by literary and more traditional production editors. The need to think of documents as machine-readable databases is not something that comes naturally to folks steeped in literary culture. In combination with the sheer time and effort that rich tagging requires, many publishers simply outsource the tagging to India, drawing a division of labour that spans oceans, to put it mildly. Once you have XML content, then what do you do with it? How do you produce books from it? Presumably, you need to be able to produce print output as well as digital formats. But while the latter are new enough to be generally XML-friendly (e-book formats being largely XML based, for instance), there aren’t any straightforward, standard ways of moving XML content into the kind of print production environments we are used to seeing. This isn’t to say that there aren’t ways of getting print—even very high-quality print—output from XML, just that most of them involve replacing your prepress staff with Java programmers.
  • Why does this have to be so hard? It’s not that XML is new, or immature, or untested. Remember that the basics have been around, and in production, since the early 1980s at least. But we have to take account of a substantial and long-running cultural disconnect between traditional editorial and production processes (the ones most of us know intimately) and the ways computing people have approached things. Interestingly, this cultural divide looked rather different in the 1970s, when publishers were looking at how to move to digital typesetting. Back then, printers and software developers could speak the same language. But that was before the ascendancy of the Desktop Publishing paradigm, which computerized the publishing industry while at the same time isolating it culturally. Those of us who learned how to do things the Quark way or the Adobe way had little in common with people who programmed databases or document-management systems. Desktop publishing technology isolated us in a smooth, self-contained universe of toolbars, grid lines, and laser proofs. So, now that the reasons to get with this program, XML, loom large, how can we bridge this long-standing divide?
  • ...44 more annotations...
  • Using the Web as a Production Platform The answer, I think, is right in front of you. The bridge is the Web, a technology and platform that is fundamentally based on XML, and which many publishers are by now comfortably familiar with. Perhaps not entirely comfortably, but at least most publishers are already working with the Web; they already either know or have on staff people who understand it and can work with it. The foundation of our argument is this: rather than looking at jumping to XML in its full, industrial complexity, which seems to be what the O'Reilly-backed StartWithXML initiative[6] is suggesting, publishers instead leverage existing tools and technologies—starting with the Web—as a means of getting XML workflows in place. This means making small investments and working with known tools rather than spending tens of thousands of dollars on XML software and rarefied consultants. It means re-thinking how the existing pieces of the production toolchain fit together; re-thinking the existing roles of software components already in use. It means, fundamentally, taking the Web seriously as a content platform, rather than thinking of it as something you need to get content out to, somehow. If nothing else, the Web represents an opportunity to think about editorial and production from outside the shrink-wrapped Desktop Publishing paradigm.
  • Is the Web made of Real XML? At this point some predictable objections can be heard: wait a moment, the Web isn’t really made out of XML; the HTML that makes up most of the Web is at best the bastard child of SGML, and it is far too flaky/unstructured/underpowered to be taken seriously. We counter by arguing that although HTML on the Web exists in a staggering array of different incarnations, and that the majority of it is indeed an unstructured mess, this does not undermine the general principle that basic, ubiquitous Web technologies can make a solid platform for content management, editorial process, and production workflow.
  • With the advent of a published XML standard in the late 1990s came the W3C’s adoption of XHTML: the realization of the Web’s native content markup as a proper XML document type. Today, its acceptance is almost ubiquitous, even while the majority of actual content out there may not be strictly conforming. The more important point is that most contemporary Web software, from browsers to authoring tools to content management systems (from blogs to enterprise systems), are capable of working with clean, valid XHTML. Or, to put the argument the other way around, clean, valid XHTML content plays absolutely seamlessly with everything else on the Web.[7]
  • The objection which follows, then, will be that even if we grant that XHTML is a real XML document type, that it is underpowered for “serious” content because it is almost entirely presentation (formatting) oriented; it lacks any semantic depth. In XHTML, a paragraph is a paragraph is a paragraph, as opposed to a section or an epigraph or a summary.
  • n contrast, more “serious” XML document types like DocBook[8] or DITA-derived schemas[9] are capable of making semantic distinctions about content chunks at a fine level of granularity and with a high degree of specificity.
  • So there is an argument for recalling the 80:20 rule here. If XHTML can provide 80% of the value with just 20% of the investment, then what exactly is the business case for spending the other 80% to achieve that last 20% of value? We suspect the ratio is actually quite a bit steeper than 80:20 for most publishers.
  • Furthermore, just to get technical for a moment, XHTML is extensible in a fairly straightforward way, through the common “class” attribute on each element. Web developers have long leveraged this kind of extensibility in the elaboration of “microformats” for semantic-web applications.[10] There is no reason why publishers shouldn’t think to use XHTML’s simple extensibility in a similar way for their own ends.
  • XHTML, on the other hand, is supported by a vast array of quotidian software, starting with the ubiquitous Web browser. For this very reason, XHTML is in fact employed as a component part of several more specialized document types (ONIX and ePub among them).
  • Why re-invent a general-purpose prose representation when XHTML already does the job?
  • It is worth pausing for a moment to consider the role of XHTML in the ePub standard for ebook content. An ePub file is, anatomically, a simply disguised zip archive. Inside the zip archive are a few standard component parts: there are specialized files that declare metadata about the book, and about the format of the book. And then there is the book’s content, represented in XHTML. An ePub book is a Web page in a wrapper.
  • To sum up the general argument: the Web as it already exists presents incredible value to publishers, as a platform for doing XML content management with existing (and often free) tools, and without having to go blindly into the unknown. At this point, we can offer a few design guidelines: prefer existing and/or ubiquitous tools over specialized ones wherever possible; prefer free software over proprietary systems where possible; prefer simple tools controlled and coordinated by human beings over fully automated (and therefore complex) systems; play to our strengths: use Web software for storing and managing content, use layout software for layout, and keep editors and production people in charge of their own domains.
  • Putting the Pieces Together: A Prototype
  • At the SFU Master of Publishing Program, we have been chipping away at this general line of thinking for a few years. Over that time, Web content management systems have been getting more and more sophisticated, all the while getting more streamlined and easier to use. (NB: if you have a blog, you have a Web content management system.) The Web is beginning to be recognized as a writing and editing environment used by millions of people. And the ways in which content is represented, stored, and exchanged online have become increasingly robust and standardized.
  • The missing piece of the puzzle has been print production: how can we move content from its malleable, fluid form on line into the kind of high-quality print production environments we’ve come to expect after two decades of Desktop Publishing?
  • Anyone who has tried to print Web content knows that the existing methods leave much to be desired (hyphenation and justification, for starters). In the absence of decent tools for this, most publishers quite naturally think of producing the print content first, and then think about how to get material onto the Web for various purposes. So we tend to export from Word, or from Adobe, as something of an afterthought.
  • While this sort of works, it isn’t elegant, and it completely ignores the considerable advantages of Web-based content management.
  • Content managed online is stored in one central location, accessible simultaneously to everyone in your firm, available anywhere you have an Internet connection, and usually exists in a much more fluid format than Word files. If only we could manage the editorial flow online, and then go to print formats at the end, instead of the other way around. At SFU, we made several attempts to make this work by way of the supposed “XML import” capabilities of various Desktop Publishing tools, without much success.[12]
  • In the winter of 2009, Adobe solved this part of the problem for us with the introduction of its Creative Suite 4. What CS4 offers is the option of a complete XML representation of an InDesign document: what Adobe calls IDML (InDesign Markup Language).
  • The IDML file format is—like ePub—a simply disguised zip archive that, when unpacked, reveals a cluster of XML files that represent all the different facets of an InDesign document: layout spreads, master pages, defined styles, colours, and of course, the content.
  • IDML is a well thought-out XML standard that achieves two very different goals simultaneously: it preserves all of the information that InDesign needs to do what it does; and it is broken up in a way that makes it possible for mere mortals (or at least our Master of Publishing students) to work with it.
  • What this represented to us in concrete terms was the ability to take Web-based content and move it into InDesign in a straightforward way, thus bridging Web and print production environments using existing tools and skillsets, with a little added help from free software.
  • We would take clean XHTML content, transform it to IDML-marked content, and merge that with nicely designed templates in InDesign.
  • The result is an almost push-button publication workflow, which results in a nice, familiar InDesign document that fits straight into the way publishers actually do production.
  • Tracing the steps To begin with, we worked backwards, moving the book content back to clean XHTML.
  • The simplest method for this conversion—and if you want to create Web content, this is an excellent route—was to use Adobe’s “Export to Digital Editions” option, which creates an ePub file.
  • Recall that ePub is just XHTML in a wrapper, so within the ePub file was a relatively clean XHTML document. It was somewhat cleaner (that is, the XHTML tagging was simpler and less cluttered) than InDesign’s other Web-oriented exports, possibly because Digital Editions is a well understood target, compared with somebody’s website.
  • In order to achieve our target of clean XHTML, we needed to do some editing; the XHTML produced by InDesign’s “Digital Editions” export was presentation-oriented. For instance, bulleted list items were tagged as paragraphs, with a class attribute identifying them as list items. Using the search-and-replace function, we converted such structures to proper XHTML list and list-item elements. Our guiding principle was to make the XHTML as straightforward as possible, not dependent on any particular software to interpret it.
  • We broke the book’s content into individual chapter files; each chapter could then carry its own basic metadata, and the pages conveniently fit our Web content management system (which is actually just a wiki). We assembled a dynamically generated table of contents for the 12 chapters, and created a cover page. Essentially, the book was entirely Web-based at this point.
  • When the book chapters are viewed online, they are formatted via a CSS2 stylesheet that defines a main column for content as well as dedicating screen real estate for navigational elements. We then created a second template to render the content for exporting; this was essentially a bare-bones version of the book with no navigation and minimal styling. Pages (or even the entire book) can be exported (via the “Save As...” function in a Web browser) for use in either print production or ebook conversion. At this point, we required no skills beyond those of any decent Web designer.
  • Integrating with CS4 for Print Adobe’s IDML language defines elements specific to InDesign; there is nothing in the language that looks remotely like XHTML. So a mechanical transformation step is needed to convert the XHTML content into something InDesign can use. This is not as hard as it might seem.
  • Both XHTML and IDML are composed of straightforward, well-documented structures, and so transformation from one to the other is, as they say, “trivial.” We chose to use XSLT (Extensible Stylesheet Language Transforms) to do the work. XSLT is part of the overall XML specification, and thus is very well supported in a wide variety of tools. Our prototype used a scripting engine called xsltproc, a nearly ubiquitous piece of software that we found already installed as part of Mac OS X (contemporary Linux distributions also have this as a standard tool), though any XSLT processor would work.
  • In other words, we don’t need to buy InCopy, because we just replaced it with the Web. Our wiki is now plugged directly into our InDesign layout. It even automatically updates the InDesign document when the content changes. Credit is due at this point to Adobe: this integration is possible because of the open file format in the Creative Suite 4.
  • We wrote an XSLT transformation script[18] that converted the XHTML content from the Web into an InCopy ICML file. The script itself is less than 500 lines long, and was written and debugged over a period of about a week by amateurs (again, the people named at the start of this article). The script runs in a couple of seconds, and the resulting .icml file can then be “placed” directly into an InDesign template. The ICML file references an InDesign stylesheet, so the template file can be set up with a house-styled layout, master pages, and stylesheet definitions for paragraphs and character ranges.
  • Rather than a public-facing website, our system relies on the Web as a content management platform—of course a public face could easily be added.
  • It should be noted that the Book Publishing 1 proof-of-concept was artificially complex; we began with a book laid out in InDesign and ended up with a look-alike book laid out in InDesign. But next time—for instance, when we publish Book Publishing 2—we can begin the process with the content on the Web, and keep it there throughout the editorial process. The book’s content could potentially be written and edited entirely online, as Web content, and then automatically poured into an InDesign template at proof time. “Just in time,” as they say. This represents an entirely new way of thinking of book production. With a Web-first orientation, it makes little sense to think of the book as “in print” or “out of print”—the book is simply available, in the first place online; in the second place in derivative digital formats; and third, but really not much more difficult, in print-ready format, via the usual InDesign CS print production system publishers are already familiar with.
  • Creating Ebook Files Creating electronic versions from XHTML source is vastly simpler than trying to generate these out of the existing print process. The ePub version is extremely easy to generate; so is online marketing copy or excerpts for the Web, since the content begins life Web-native.
  • Since an ePub file is essentially XHTML content in a special wrapper, all that is required is that we properly “wrap” our XHTML content. Ideally, the content in an ePub file is broken into chapters (as ours was) and a table of contents file is generated in order to allow easy navigation within an ebook reader. We used Julian Smart’s free tool eCub[19] to simply and automatically generate the ePub wrapper and the table of contents. The only custom development we did was to create a CSS stylesheet for the ebook so that headings and paragraph indents looked the way we wanted. Starting with XHTML content, creating ePub is almost too easy.
  • today, we are able to put the process together using nothing but standard, relatively ubiquitous Web tools: the Web itself as an editing and content management environment, standard Web scripting tools for the conversion process, and the well-documented IDML file format to integrate the layout tool.
  • Our project demonstrates that Web technologies are indeed good enough to use in an XML-oriented workflow; more specialized and expensive options are not necessarily required. For massive-scale enterprise publishing, this approach may not offer enough flexibility, and the challenge of adding and extracting extra semantic richness may prove more trouble than it's worth.
  • But for smaller firms who are looking at the straightforward benefits of XML-based processes—single source publishing, online content and workflow management, open and accessible archive formats, greater online discoverability—here is a way forward.
  • The result is very simple and easy to use. Our demonstration requires that a production editor run the XSLT transformation script manually, but there is no reason why this couldn’t be built directly into the Web content management system so that exporting the content to print ran the transformation automatically. The resulting file would then be “placed” in InDesign and proofed.
  • The final piece of our puzzle, the ability to integrate print production, was made possible by Adobe's release of InDesign with an open XML file format. Since the Web's XHTML is also XML, is can be easily and confidently transformed to the InDesign format.
  • Such a workflow—beginning with the Web and exporting to print—is surely more in line with the way we will do business in the 21st century, where the Web is the default platform for reaching audiences, developing content, and putting the pieces together. It is time, we suggest, for publishers to re-orient their operations and start with the Web.
  • Using the Web as a Production Platform
  • Gary Edwards on 01 Nov 13
     
    I was looking for an answer to a problem Marbux had presented, and found this interesting article.  The issue was that of the upcoming conversion of the Note Case Pro (NCP) layout engine to the WebKit layout engine, and what to do about the NCP document format. My initial reaction was to encode the legacy NCP document format in XML, and run an XSLT to a universal pivot format like TEI-XML.  From there, the TEI-XML community would provide all the XSLT transformation routines for conversion to ODF, OOXML, XHTML, ePUB and HTML/CSS. Researching the problems one might encounter with this approach, I found this article.  Fascinating stuff. My take away is that TEI-XML would not be as effective a "universal pivot point" as XHTML.  Or perhaps, if NCP really wants to get aggressive; IDML - InDesign Markup Language. As an after thought, i was thinking that an alternative title to this article might have been, "Working with Web as the Center of Everything".
Gary Edwards

The top 20 HTML5 sites of 2012 | Feature | .net magazine - 0 views

www.netmagazine.com/...top-20-html5-sites-2012

HTML5 Oli-Studhlme NetMagazine

shared by Gary Edwards on 19 Dec 12 - No Cached
  • Gary Edwards on 19 Dec 12
     
    Excellent review of great HTML5 Web Sites.  Includes quick reviews of tools and developer services for HTML5, CSS3, Canvas/SVG, and JavaScript.  (No JSON :()  Includes sites offering tutorials and demonstrations of how advanced, even spectacular, HTML5 builds.  This is clearly the kind of resource anyone involved with advancing HTML5 would like to return to and reference as the Web pushes forward.  Good Stuff Oli!!!! "2012 in review: HTML5 Doctor Oli Studholme nominates the websites that made best use of HTML5 this year, including a range of useful developer tools and online resources Another year has flown by, bringing the requisite slew of major changes. HTML5 is on track to be a recommendation in 2014, with W3C appointing four new editors to manage the W3C's HTML5 spec and putting the HTML5 spec on GitHub; and WHATWG focusing on the HTML Living Standard. Responsive design and Twitter Bootstrap went mainstream, IE10 was released (along with seven versions of Chrome and Firefox), and browser support continues to improve. It's impossible to pick only 20 ground-breaking sites from the thousands that did truly advance our collective game, but here's my attempt. For convenience, I've grouped them according to the way in which they use HTML5."
Paul Merrell

[Phoronix] Google Web Designer Is Now Natively Available On Linux - 0 views

www.phoronix.com/scan.php

WYSIWYG-HTML5-CSS-JS-editor Google

shared by Paul Merrell on 24 Apr 14 - No Cached
  • Last year Google unveiled the Google Web Designer as a program to put out clean, human-readable HTML5 code and this WYSIWYG editor can take advantage of the full realm of new HTML5 and JavaScript possibilities. That tool for web developers is now finally available to Linux users.
Gary Edwards

Google Wave Operational Transformation (Google Wave Federation Protocol) - 0 views

www.waveprotocol.org/...operational-transform

google-wave operational-transform OT xerox-parc wave-dev OTXML

shared by Gary Edwards on 03 Sep 09 - Cached
  • Wave document operations consist of the following mutation components:skipinsert charactersinsert element startinsert element endinsert anti-element startinsert anti-element enddelete charactersdelete element startdelete element enddelete anti-element startdelete anti-element endset attributesupdate attributescommence annotationconclude annotationThe following is a more complex example document operation.skip 3insert element start with tag "p" and no attributesinsert characters "Hi there!"insert element endskip 5delete characters 4From this, one could see how an entire XML document can be represented as a single document operation. 
  • Wave OperationsWave operations consists of a document operation, for modifying XML documents and other non document operations. Non document operations are for tasks such as adding or removing a participant to a Wavelet. We'll focus on document operations here as they are the most central to Wave.It's worth noting that an XML document in Wave can be regarded as a single document operation that can be applied to the empty document.This section will also cover how Wave operations are particularly efficient even in the face of a large number of transforms.XML Document SupportWave uses a streaming interface for document operations. This is similar to an XMLStreamWriter or a SAX handler. The document operation consists of a sequence of ordered document mutations. The mutations are applied in sequence as you traverse the document linearly. Designing document operations in this manner makes it easier to write transformation function and composition function described later.In Wave, every 16-bit Unicode code unit (as used in javascript, JSON, and Java strings), start tag or end tag in an XML document is called an item. Gaps between items are called positions. Position 0 is before the first item. A document operation can contain mutations that reference positions. For example, a "Skip" mutation specifies how many positions to skip ahead in the XML document before applying the next mutation.Wave document operations also support annotations. An annotation is some meta-data associated with an item range, i.e. a start position and an end position. This is particularly useful for describing text formatting and spelling suggestions, as it does not unecessarily complicate the underlying XML document format.
  • Gary Edwards on 03 Sep 09
     
    Summary: Collaborative document editing means multiple editors being able to edit a shared document at the same time.. Live and concurrent means being able to see the changes another person is making, keystroke by keystroke. Currently, there are already a number of products on the market that offer collaborative document editing. Some offer live concurrent editing, such as EtherPad and SubEthaEdit, but do not offer rich text. There are others that offer rich text, such as Google Docs, but do not offer a seamless live concurrent editing experience, as merge failures can occur. Wave stands as a solution that offers both live concurrent editing and rich text document support.  The result is that Wave allows for a very engaging conversation where you can see what the other person is typing, character by character much like how you would converse in a cafe. This is very much like instant messaging except you can see what the other person is typing, live. Wave also allows for a more productive collaborative document editing experience, where people don't have to worry about stepping on each others toes and still use common word processor functionalities such as bold, italics, bullet points, and headings. Wave is more than just rich text documents. In fact, Wave's core technology allows live concurrent modifications of XML documents which can be used to represent any structured content including system data that is shared between clients and backend systems. To achieve these goals, Wave uses a concurrency control system based on Operational Transformation.
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