Oracle Forms :Window and Canvases
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This document discusses controlling windows and canvases programmatically in ABAP. It describes using triggers and system variables to interact with windows, manipulating multiple windows and views, and navigating tab style canvases. It provides examples of window and canvas built-ins for tasks like finding, getting and setting properties of windows and canvases, hiding, showing, moving and resizing windows, and working with tab pages.
Oracle Forms :Window and Canvases
- 1. Controlling Windows and Canvases Programmatically
- 2. Objectives • Display a form document in multiple windows • Write code to interact with windows • Manipulate windows programmatically • Window and Canvas Built-ins • Manipulate canvas views programmatically • Display large data blocks in a window
- 3. Window Interaction Triggers Trigger When-Window-Activated When-Window-Deactivated When-Window-Closed When-Window-Resized Use Enforces navigation Deactivates a window Closes a window Maintains visual standards
- 4. Example System Variable :SYSTEM.EVENT_WINDOW IF :SYSTEM.EVENT_WINDOW=‘EMP_WIN’ THEN GO_BLOCK(‘DEPT’); SET_WINDOW_PROPERTY(‘EMP_WIN’,VISIBLE, PROPERTY_FALSE); ELSE EXIT_FORM; END IF;
- 5. Window Built-ins • FIND_WINDOW • GET_WINDOW_PROPERTY • SET_WINDOW_PROPERTY • HIDE_WINDOW • SHOW_WINDOW • MOVE_WINDOW • RESIZE_WINDOW
- 6. Canvas Built-ins • FIND_CANVAS • GET_CANVAS_PROPERTY • SET_CANVAS_PROPERTY • FIND_VIEW • GET_VIEW_PROPERTY • SET_VIEW_PROPERTY • HIDE_VIEW • SHOW_VIEW • REPLACE_CONTENT_VIEW • SCROLL_VIEW
- 7. Working with Tab Style Canvas Page 1 Page 3Page 2click • Uses either function key • Next tab Page • Previous Tab page The When-Tab-Page-Changed trigger fires when a user: • Clicks a tab Previous Tab Page Next Tab Page
- 8. Working with Tab Style Canvas Tab canvas system variables: • :SYSTEM.TAB_NEW_PAGE • :SYSTEM.TAB_PREVIOUS_PAGE
- 9. Built-ins for Manipulating Tab Canvas • FIND_TAB_PAGE: Returns the tab page ID • GET_TAB_PAGE_PROPERTY: Returns the tab page label or the tab page canvas • SET_TAB_PAGE_PROPERTY: Enables changing of the tab page label
- 10. Example • Identify the topmost tab page • Bring a tab page to the top programmatically IF GET_CANVAS_PROPERTY(‘Dept_cv', TOPMOST_TAB_PAGE)= ‘Emp_page' THEN SET_CANVAS_PROPERTY(‘Dept_cv', TOPMOST_TAB_PAGE, ‘Dept_page'); END IF;
- 11. Windows and Blocks Window2 Block3 Active Window Nonactive Window Cursor Location Window1 Block2 Block1
- 12. Manipulating Windows Programmatically • Maximizing MDI Window SET_WINDOW_PROPERTY (forms_mdi_window, window_state, maximize); • Setting Title for the Window SET_WINDOW_PROPERTY (‘DEPT_WIN’, Title, ‘Department Application’); • Location the Cursor window GET_VIEW_PROPERTY (GET_ITEM_PROPERTY(NAME_IN (‘system.cursor_item’), item_canvas), window_name);
- 13. Summary • Controlling windows with system variable SYSTEM.EVENT_WINDOW • Window Interaction triggers • Working with Tab Style Canvas – SYSTEM.TAB_NEW_PAGE – SYSTEM.TAB_PREVIOUS_PAGE • Different Window and Canvas Built-ins
Editor's Notes
- #6: Technical Note In Microsoft Windows, you can reference the multiple document interface (MDI) Application window with the FORMS_MDI-WINDOW constant. FORMS_MDI_WINDOW is used with certain built-in functions and procedures That relate to windows. In web-deployed forms, you can obtain similar functionality by setting the Forms Applet WIDTH and HEIGHT parameters in the base HTML page.
- #7: Technical Note REPLACE_CONTENT_VIEW does not hide the stacked canvas already displayed In the window. In contrast SHOW_VIEW and SET_VIEW_PROPERTY will display The given canvas in front of any stacked canvas, if the canvas Visible property is set to True.
- #12: Technical Note In general, put blocks in separate windows. If blocks are closely related (through a foreign-key relationship) put them in the same window. During commit processing, Forms processes all base table blocks in Sequential order. Therefore, transaction management is block-based rather than Window-based. However, the user expects to interact with a form in a Window-based Manner.
- #13: Technical Note You can also maximize the client server MDI window application with the WINDOW_STATE command line parameter: ifrun60.exe module=emp.fmx userid=scott/tiger@trn9 window_state=maximize You can switch from the MDI to the SDI window application by using the USESDI command Line parameter: ifrun60.exe module=emp.fmx userid=scott/tiger@trn9 usesdi=yes With SDI window applications, you must size form module window to allow for the menu Menu toolbar and console bar display.