80 lines
1.9 KiB
Plaintext
80 lines
1.9 KiB
Plaintext
note
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description: "Summary description for {WSF_DATASOURCE}."
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author: ""
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date: "$Date$"
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revision: "$Revision$"
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deferred class
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WSF_DATASOURCE [G -> WSF_ENTITY]
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feature --Event handling
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set_on_update_agent (f: PROCEDURE [ANY, TUPLE])
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--Set update listener
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do
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on_update_agent := f
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end
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update
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--Trigger update listener
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do
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if attached on_update_agent as a then
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a.call (Void)
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end
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end
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feature {WSF_PAGE_CONTROL, WSF_CONTROL} -- State management
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state: JSON_OBJECT
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-- Return state which contains the current sort_column and sort_direction
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do
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create Result.make
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if attached sort_column as a_sort_column then
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Result.put (create {JSON_STRING}.make_json (a_sort_column), "sort_column")
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else
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Result.put (create {JSON_NULL}, "sort_column")
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end
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Result.put (create {JSON_BOOLEAN}.make_boolean (sort_direction), "sort_direction")
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end
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set_state (new_state: JSON_OBJECT)
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-- Restore sort_column and sort_direction from json
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do
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if attached {JSON_STRING} new_state.item ("sort_column") as new_sort_column then
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sort_column := new_sort_column.unescaped_string_32 -- Implicit Conversion !
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elseif attached {JSON_NULL} new_state.item ("sort_column") as new_sort_column then
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sort_column := Void
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end
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if attached {JSON_BOOLEAN} new_state.item ("sort_direction") as new_sort_direction then
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sort_direction := new_sort_direction.item
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end
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end
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feature -- Change
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set_sort_column (a_sort_column: like sort_column)
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-- Set the column by which the data should be sorted
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do
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sort_column := a_sort_column
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end
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set_sort_direction (a_sort_direction: like sort_direction)
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-- Set the sorting direction
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do
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sort_direction := a_sort_direction
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end
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feature -- Properties
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sort_column: detachable STRING
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sort_direction: BOOLEAN
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data: ITERABLE [G]
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deferred
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end
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on_update_agent: detachable PROCEDURE [ANY, TUPLE]
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end
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