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Grokking the Paradigm Changing Column Layouts

In this guide, Dennis Dawson, Principal Technical Writer at EMC/Documentum, explores the intricacies of managing columns in Webtop applications. Learn how to add, remove, and rearrange columns within your list controls by modifying the XML configuration. Discover essential tips for troubleshooting when things go awry. The guide covers updating configurations, refreshing settings, and offers best practices to enhance your application's functionality. Gain confidence in customizing and optimizing your Webtop environment through straightforward steps.

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Grokking the Paradigm Changing Column Layouts

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  1. Grokking the ParadigmChanging Column Layouts Dennis Dawson Principal Technical Writer EMC/Documentum

  2. Here’s what I’m gonna talk about: Add columns to display Remove columns from display Rearrange columns Tips for when thangs ain’t don’t work right Ten Minutes’ Worth of Stuff Grokking the Paradigm

  3. Changing Default Columns • We can change the order and content of columns in any of our list controls by changing their XML configuration Grokking the Paradigm

  4. Changing Default ColumnsUpdating myfiles_classic_component.xml • Copy myfiles_classic_component.xml to the /custom directory (which extends myobjects_list_component) • Copy the entire <columns> element from :/webcomponent/config/library/myobjects/myobjects_list_component.xml • Paste it into the <component> element of our custom version of myfiles_classic_component.xml Grokking the Paradigm

  5. Adding a Default ColumnUpdating myfiles_classic_component.xml • Change visible to true to display a column <column> <attribute>r_creation_date</attribute> <label><nlsid>MSG_CREATION_DATE</nlsid></label> <!-- <visible>false</visible> DD 11_16_06 --> <visible>true</visible> </column> Grokking the Paradigm

  6. Adding a Default ColumnRefreshing the Configuration Settings • To refresh the configuration settings, open http://localhost:8080/webtop/wdk/refresh.jsp • Verify in the browser column preferences • If column preferences have never been set, changes appear automatically • If column preferences have been set, they are stored as cookies at the browser; click Reset to Defaults to see changes Grokking the Paradigm

  7. Adding a Default ColumnThe Result • The my_files page after update: Grokking the Paradigm

  8. Removing a Default ColumnUpdating myfiles_classic_component.xml • To remove a column, set its visible attribute to false • Here, we’re removing the column for file format (content type) <column> <attribute>a_content_type</attribute> <label><nlsid>MSG_FORMAT</nlsid></label> <!-- Changed by Dennis Dawson 11-16-06 <visible>true</visible> --> <visible>false</visible> </column> Grokking the Paradigm

  9. Removing a Default ColumnThe Result • Here’s the my_files page after update: Grokking the Paradigm

  10. Rearranging ColumnsUpdating myfiles_classic_component.xml • Rearrange columns by rearranging their corresponding elements in the configuration file ... <column> <attribute>r_content_size</attribute> <label><nlsid>MSG_SIZE</nlsid></label> <visible>true</visible> </column> <column> <attribute>r_version_label</attribute> <label><nlsid>MSG_VERSION_LABEL</nlsid></label> <visible>true</visible> </column> ... Grokking the Paradigm

  11. Rearranging ColumnsThe Results • When we refresh the configuration, version and size have swapped places: Grokking the Paradigm

  12. When In Doubt, Strip the Baby • Parenting tip: When a baby won’t stop crying: • Strip it • Diaper it • Dress it • Swaddle it • Feed it • Burp it • Serenade it Grokking the Paradigm

  13. When In Doubt, Strip Your Application • Programming tip: When your application won’t work: • Shut down your computer(s) • Turn on (cold boot) your computer(s) • Restart your server • Restart your browser • Delete your offline content • Clear your caches • Clear your cookies • Strip your application back to a working version • Add your changes back in one at a time until it breaks again (so you know why) or it works (just be glad) • Keep iterative backups Grokking the Paradigm

  14. Multiplicitas Componatis Res Simplex • Taken as a whole, Webtop and WDK-based applications are intricate, multifaceted feats of programming • When you focus on any one element of the application, it’s easy to follow the logic and duplicate its behavior • Once you grok the paradigm, enhancing and customizing complex applications becomes a series of simple steps Grokking the Paradigm

  15. Clarifications/comments?Please send them to:dawson_dennis@emc.comWDK Questions? Please visit:http://developer.emc.com/developer/

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