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Editable Documents on the Web
 

Editable Documents on the Web

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My presentation on "Editable Documents on the Web". 2011.

My presentation on "Editable Documents on the Web". 2011.
by Markku Laine, http://www.tinyurl.com/mplaine

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    Editable Documents on the Web Editable Documents on the Web Presentation Transcript

    • Editable Documents on the WebT-111.5502 Seminar on Media Technology B P (4-8 cr)PresentationMarkku Laine, M.Sc. (Tech.)markku.laine@aalto.fi November 8, 2011
    • Presentation Outline•  Evolution•  Revolution(?): The HTML5 Approach•  Research topics•  Conclusion 2
    • Evolution 3
    • 1990: The WorldWideWeb (Nexus)Browser•  The first Web browser•  Direct manipulation of text on screen (WYSIWYG)•  The user reading a Web page can edit and save that page•  A true collaboration platform! Source: The World Wide Web Consortium (W3C) 4
    • 1993: The Mosaic Browser•  The browser that popularized the Web•  Regression: the user reading a Web page cannot anymore edit that page•  The collaborative nature was lost! –  Included support for annotations, though Source: Wikipedia 5
    • 2000: The Internet Explorer 5.5 Browser•  The mainstream Web browser•  The user reading a Web page can edit the entire page –  document.designMode –  element.contentEditable Source: Wikipedia 6
    • ????: JavaScript-Based WYSIWYGEditors•  Can be embedded into any Web page•  http://testbed.tml.hut.fi/tutorial/ htmleditors.xformsdb Source: XFormsDB 7
    • Revolution(?):The HTML5 Approach 8
    • Googles "Hype Cycle" for HTML5 1st WHATWG draft 1st W3C draft Source: Google Insights for Search 9
    • Features Related to Editing Documents•  The contentEditable attribute•  The designMode property•  Editing APIs•   WYSIWYG editing for Web pages –  Certain elements can be restricted from being edited•   Implemented in all major browsers 10
    • Demo 11
    • <div contenteditable="true"> 12
    • HTML Elements contenteditableAttribute•  Governs just the element on which it appears, and that elements children –  That is, makes those elements editable•  Enables Web developers to build element-level rich text editors•  W3C Working Draft –  http://www.w3.org/TR/html5/editing.html#contenteditable 13
    • The API calls•  element.contentEditable [= value]•  element.isContentEditable 14
    • Actions within Editing Hosts•  Move the caret•  Change the selection•  Insert text•  Break block•  Insert a line separator•  Delete•  Insert, and wrap text in, semantic elements•  Select and move non-editable elements nested inside editing hosts•  Edit form controls nested inside editing hosts 15
    • document.designMode="on" 16
    • Document Objects designMode Property•  Governs the entire document –  That is, makes the entire document editable•  Enables Web developers to build document-level rich text editors•  W3C Working Draft –  http://www.w3.org/TR/html5/editing.html#designMode 17
    • The API calls•  document.designMode [= value] 18
    • Editing APIs 19
    • Document Objects Editing APIs•  A set of API calls to issue commands (e.g., bold and italic) on the editable region−that is, a document or an element), and to query the current state of the region•  W3C Working Draft –  http://www.w3.org/TR/html5/dnd.html#editing-apis 20
    • The API calls•  document.execCommand( commandId [,... [,...]] )•  document.queryCommandEnabled( commandId )•  document.queryCommandIndeterm( commandId )•  document.queryCommandState( commandId )•  document.queryCommandSupported( commandId )•  document.queryCommandValue( commandId ) 21
    • Possible values for commandId(specified by W3C)•  bold, italic, subscript, superscript•  createLink, unlink, formatBlock•  delete, forwardDelete•  insertImage, insertHTML, insertLineBreak, insertOrderedList, insertUnorderedList, insertParagraph, insertText•  redo, undo, selectAll, unselect•  vendorID-customCommandID•  Anything else  do nothing 22
    • ExecCommand Demo http://www.quirksmode.org/dom/execCommand/ 23
    • Implementation Status Source: http://caniuse.com/ 24
    • Research Topics 25
    • Research Topics•  Code debugging game called Gidget (Lee and Ko, 2011)•  Collaborative, lightweight in-line editing (Rees, 2000)•  Web as an application platform (Taivalsaari and Mikkonen, 2011 & Anttonen et al., 2011)•  Collaborative and interactive document editing (Fujimoto and Matsuo, 2006) 26
    • Conclusion 27
    • Conclusion•  Support for in browser rich text editing has come and gone during the history of the Web•  HTML5 provides improvements related to editing documents in browsers –  Some compatibility problems between different browsers•  Typically used together with other HTML5 features, such as client-side databases as well as drag-and-drop•  "This document cannot be edited"  Will this change the way we interact with documents permanently? 28
    • References•  Rees, M.J. "User Interfaces for Lightweight In-Line Editing of Web Pages". In AUIC, 2000.•  Taivalsaari, A. and Mikkonen, T. "The Web as an Application Platform: The Saga Continues". In SEAA, 2011.•  Lee, M.J. and Ko, A.J. "Personifying Programming Tool Feedback Improves Novice Programmers Learning". In ICER, 2011.•  Anttonen, M. et al. "Transforming the Web into a Real Application Platform: New Technologies, Emerging Trends and Missing Pieces". In SAC11, 2011. 29
    • Thank You! Questions? Comments? markku.laine@aalto.fi 30