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Advanced Templates
         for Ext JS



    James Brantly   @jbrantly
Overview
Overview
 Member Functions
   Subtemplates
Recursive Templates
    List Layout
Crash Course
Member Functions
Member Functions
• Arbitrary JavaScript functions can be defined and
  executed as part of the template
• Extremely useful for adding advanced functionality and
  all of the techniques shown today will use them
• Defined by passing a config object as last parameter and
  attaching functions as properties
• Three basic ways of accessing member functions from
  template
Subtemplates
Subtemplates
•   Templates can call other templates
•   Great if there is a lot of redundancy in your templates
•   Makes use of the “apply” method
•   Can optionally create a “manager” class to name and
    easily access subtemplates
Recursive Templates
Recursive Templates
• Uses the same methodology as subtemplates: templates can
  call other templates, even themselves
• Great for hierarchical/nested data
List Layout
List Layout
• Templates are often used to create lists (ex. DataView)
• Typically laid out using normal flow (inline or block) or
  stacked next to each other using float
• It’s possible using the “xindex” variable and the modulo
  operator to create wrapper elements around groups of
  items for more advanced layout strategies
Example App
Questions?
Questions?
 http://www.sencha.com/deploy/dev/docs/
     see the Ext.XTemplate constructor

http://www.github.com/jbrantly/advtemplates

            james@sencha.com

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Advanced templates

  • 1.
  • 2. Advanced Templates for Ext JS James Brantly @jbrantly
  • 4. Overview Member Functions Subtemplates Recursive Templates List Layout
  • 6.
  • 8. Member Functions • Arbitrary JavaScript functions can be defined and executed as part of the template • Extremely useful for adding advanced functionality and all of the techniques shown today will use them • Defined by passing a config object as last parameter and attaching functions as properties • Three basic ways of accessing member functions from template
  • 9.
  • 11. Subtemplates • Templates can call other templates • Great if there is a lot of redundancy in your templates • Makes use of the “apply” method • Can optionally create a “manager” class to name and easily access subtemplates
  • 12.
  • 13.
  • 15. Recursive Templates • Uses the same methodology as subtemplates: templates can call other templates, even themselves • Great for hierarchical/nested data
  • 16.
  • 18. List Layout • Templates are often used to create lists (ex. DataView) • Typically laid out using normal flow (inline or block) or stacked next to each other using float • It’s possible using the “xindex” variable and the modulo operator to create wrapper elements around groups of items for more advanced layout strategies
  • 19.
  • 20.
  • 23. Questions? http://www.sencha.com/deploy/dev/docs/ see the Ext.XTemplate constructor http://www.github.com/jbrantly/advtemplates james@sencha.com