Revision as of 05:59, 3 March 2016

Under Construction

See Also

Custom Delegates

Opening and Closing

Opening an App

Desktop

When a Desktop App is opened, the following event delegates are called:

• init
• visiblewhen, enabledwhen (runtime only)
• load
• datachanged, parentdatachanged, refresh
• ready
• resized (Canvas Section)
• activate

Setup.prg

If setup.prg exists in the App's directory, setup.prg is run.

INIT

• App
  • Page1
    • Section1 (If Section1 has a 'database' value, the database is opened, running dbc_opendata.prg if it exists in the database's directory. If a database is open and Section1 has a 'table' value, the table is opened, running the table onopen trigger if one exists.)
      • Field1
      • Field2
      • FieldN
    • Section2 (Database and/or Section2's table as for Section1 above)
      • Field1 ... FieldN
    • SectionN (Database and/or SectionN's table as for Section1 above)
      • Field1 ... FieldN
  • Page2
    • Section1 (Database and/or Section1's table as for Page 1, Section1 above)
      • Field1 ... FieldN
    • Section2 (Database and/or Section2's table as for Page 1, Section1 above)
      • Field1 ... FieldN
    • SectionN (Database and/or SectionN's table as for Page 1, Section1 above)
      • Field1 ... FieldN
  • PageN
    • Section1 (Database and/or Section1's table as for Page 1, Section1 above)
      • Field1 ... FieldN
    • Section2 (Database and/or Section2's table as for Page 1, Section1 above)
      • Field1 ... FieldN
    • SectionN (Database and/or SectionN's table as for Page 1, Section1 above)
      • Field1 ... FieldN

VISIBLE WHEN

The VISIBLE WHEN event is called for Pages and their Sections (runtime only). Called after the object's init; other objects' init may not yet have been called.

ENABLED WHEN

The ENABLED WHEN event is called for Pages and their Sections (runtime only). Called after the object's init and visiblewhen; other objects' init and visiblewhen may not yet have been called.

LOAD

• App
  • Page1
    • Section1
      • Field1 ... FieldN
    • ...
    • SectionN
      • Field1 ... FieldN
  • ...
  • PageN
    • Section1
      • Field1 ... FieldN
    • ...
    • SectionN
      • Field1 ... FieldN

DATACHANGED

The DATACHANGED event is called for Form Sections and their Fields.

PARENTDATACHANGED

The PARENTDATACHANGED event is called for related child Sections.

REFRESH

The REFRESH event is called for Sections.

READY

• App
  • Page1
    • Section1
      • Field1 ... FieldN
    • ...
    • SectionN
      • Field1 ... FieldN
  • ...
  • PageN
    • Section1
      • Field1 ... FieldN
    • ...
    • SectionN
      • Field1 ... FieldN

RESIZED

The RESIZED event is called for all Canvas Sections.

ACTIVATE

• Page1 (or Page specified in the App 'Initial Page' attribute or first Page user has permission to read)
  • Section1
    • Field1 ... FieldN
  • ...
  • SectionN
    • Field1 ... FieldN

Web/Mobile App

When a Web/Mobile App is opened, the following event delegates are called:

INIT

• App
  • Page1
    • Section1 Field1 ... FieldN
  • Page2
  • ...
  • PageN

LOAD

• App
  • Page1
    • Section1 Field1 ... FieldN
  • Page2
  • ...
  • PageN

READY

• App
  • Page1
    • Section1 Field1 ... FieldN
  • Page2
  • ...
  • PageN

RESIZED

The RESIZED event is called for all Canvas Sections.

Closing an App

Desktop

When a Desktop App is closed, the following event delegates are called:

UNLOAD and DESTROY

• Page1 UNLOAD
  • Section1 UNLOAD
  • ...
  • SectionN UNLOAD
• Page1 DESTROY
  • Section1 DESTROY
  • ...
  • SectionN DESTROY
• Page2 UNLOAD
  • Section1 UNLOAD
  • ...
  • SectionN UNLOAD
• Page2 DESTROY
  • Section1 DESTROY
  • ...
  • SectionN DESTROY
• ...
• PageN UNLOAD
  • Section1 UNLOAD
  • ...
  • SectionN UNLOAD
• PageN DESTROY
  • Section1 DESTROY
  • ...
  • SectionN DESTROY
• App UNLOAD
• App DESTROY

The database is closed, running dbc_closedata.prg if it exists in the database's directory. Tables are closed, running the tables' onclose trigger if applicable.

Web App

Navigating

Navigating between Pages

When changing from one page (Page1) to another (Page2), the following event delegates are called:

Desktop

DEACTIVATE

• Page1
  • Section1
    • Field1 ... FieldN
  • ...
  • SectionN
    • Field1 ... FieldN

ACTIVATE

• Page2
  • Section1
    • Field1 ... FieldN
  • ...
  • SectionN
    • Field1 ... FieldN

VISIBLE WHEN and ENABLED WHEN

• Page2 VISIBLE WHEN (runtime only)
• Page2 ENABLED WHEN (runtime only)
  • Section1 VISIBLE WHEN (runtime only)
  • Section1 ENABLED WHEN (runtime only)
  • ...
  • SectionN VISIBLE WHEN (runtime desktop only)
  • SectionN ENABLED WHEN (runtime desktop only)

Web App

DEACTIVATE

• Page1

ACTIVATE

• Page2

Navigating Form Section

Desktop

Using Page actionbar or Section header actionbar

• FormSection DATACHANGED
• FormSection REFRESH
  • Field1 ... FieldN DATACHANGED
• RelatedSection PARENTDATACHANGED
• RelatedSection DATACHANGED (if Form Section)
• RelatedSection REFRESH (if Form Section)
  • Field1 ... FieldN DATACHANGED (if Form Section)

Web App

Using Page actionbar

• None

Navigating Grid Section

Desktop

From row to row (cursor or mouse) or using Page navigation buttons in the Grid Section actionbar

• GridSection CLICK
• RelatedSection PARENTDATACHANGED
• RelatedSection DATACHANGED (if Form Section)
• RelatedSection REFRESH (if Form Section)
  • Field1 ... FieldN DATACHANGED (if Form Section)

Web App

From row to row (mouse) or using Page navigation buttons in the Grid Section actionbar

• None