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- '
- 'Class description:
- '
- !short:Mask class structure:
- Class Mask:
- ~~~~~~~~~~~
- The View class is appended with user defined window content. The window inside
- can be filed with screen generator output.
-
- Common use:
- ~~~~~~~~~~~
- The best way is to study the demo program Demo3.prg.
-
- Source code of the class is in C_Mask.prg.
-
- !seealso: c_view.ngo:View c_dbrows.ngo:DBrowse c_task.ngo:Task c_report.ngo:Report c_finfo.ngo:FInfo c_menu.ngo:Menu c_dbf.ngo:Dbf c_color.ngo:Color ob_class.ngo:"Class hierarchy"
-
- !short:~~~~~~~~~~~~~~~~~~~~~
- !short:create class Mask from View
- !short: export:
- !short: var Initialized //false
- ^BMask:Initialized^N: read-only: logical
- Used for speed optimizing in displaying a object of the class in method
- Mask:VPaint().
-
- !short: var SayData //{{Row,Col,Text},...}
- ^BMask:SayData^N: public: array
- Array of the pieces of the text, it should be displayed to the window
- on the Row,Col position. It is filled mainly by the method
- Mask:AddSay(...).
-
- !short: var GetData //{{Row,Col},...}
- ^BMask:GetData^N: public: array
- Array of positions of the Get objects for the object of class Mask.
- It is filled mainly by methods Mask:AddField(...), Mask:AddMemo(...)
- or Mask:AddBlock(...).
-
- !short: method New=MaskNew //o:New() --> self
- ^BMask:New()^N: public: return self
- Object is filled with default values.
-
- !short: method CreateObj=MaskCreateObj //o:CreateObj() --> new_object_of_this_class
- ^BMask:CreateObj^N:public: return new_self_of_this_class
- Returns the new object of this class.
-
- !short: method Copy=MaskCopy //o:Copy() --> self
- ^BMask:Copy()^N:public: return copy_of_self
- Returns the copy of the common object of this class.
-
- !short: method AddSay=MaskAddSay //o:AddSay(R,C,Text) --> true
- ^BMask:AddSay(R,C,Text)^N: public: return true
- This window is appended by next Text for view in the R,C position relative
- to window beginning (i.e. to the left upper window corner).
-
- Parameter description:
- ~~~~~~~~~~~~~~~~~~~~~~~
- ^UR^N: numeric: no default
- Position of edited data (row) relative to left upper window corner.
-
- ^UC^N: numeric: no default
- Position of edited data (column) relative to left upper window corner.
-
- ^UText^N: character: no default
- The displayed text.
-
- !short: method AddBlock=MaskAddBlock //o:AddBlock(R,C,cShortNm,cVarNm,bBlock,bDoGet,cPict,bWhen,bValid) --> true
- ^BMask:AddBlock(R,C,ShortName,VarName,Block,DoGet,Pict,When,Valid)^N:
- public: return true
- This object is appended with the next column (variable) defined by
- the code block.
-
- Parameter description:
- ~~~~~~~~~~~~~~~~~~~~~~
- ^UR^N: numeric: no default
- Position of edited data (row) relative to left upper window corner.
-
- ^UC^N: numeric: no default
- Position of edited data (column) relative to left upper window corner.
-
- ^UShortName^N: character: default is ""
- The column name used in Browse mode.
-
- ^UVarName^N: character: default je ShortName
- Edited variable name, or the database field name saved as information
- to clipper Get object, created in this method and saved to DoGet array.
- The clipper get object should know the edited variable name.
-
- ^UBlock^N: code_block: no default
- The code block of get/set type, can be created by clipper functions
- FieldBlock(), FieldWBlock(), MemVarBlock() or by your own piece
- of code.
-
- ^UDoGet^N: code_block: default is the virtual_method_Browse:DoGet()
- The code block which by the help of the Get object edits the variable
- (database field), of the respective table column. For properly use,
- you can study source code of method DBrowse:DoGet in file c_DBrowse.prg,
- and static function SetUsers in c_Menu.prg.
-
- ^UPicture^N: character: default is ""
- The display mask for the column display mode.
-
- ^UWhen^N: code_block: default is {||true}
- The code block evaluated before the begining of the editation of this
- column, if returns false no editation is processed. It enables to produce
- the computed table columns or the read-only columns.
-
- ^UValid^N: code_block: default is {||true}
- The code block evaluated after finishing of the current column editation
- for its validation. (if returns true the new value is valid)
-
- !short: method AddMemo=MaskAddMemo //o:AddMemo(R,C,cShortNm,cField,bWhen,bValid,nRowSize,nColSize) --> true
- ^BMask:AddMemo(R,C,cShortName,cField,bWhen,bValid,nRowSize,nColSize)^N:
- public: return true
- This object is appended with the next column, defined as memo field.
-
- Parameter description:
- ~~~~~~~~~~~~~~~~~~~~~~
- ^UR^N: numeric: no default
- Position of edited data (row) relative to left upper window corner.
-
- ^UC^N: numeric: no default
- Position of edited data (column) relative to left upper window corner.
-
- ^UShortName^N: character: default is ""
- The column name used in Browse mode.
-
- ^UcField^N: character: no default
- The full name of the memo field (field->name), if there is no prefix
- it is accepted from instvar variable View:Alias.
-
- ^UWhen^N: code_block: default is {||true}
- The code block evaluated before the begining of the editation of this
- column, if returns false no editation is processed. It enables to produce
- the computed table columns or the read-only columns.
-
- ^UValid^N: code_block: default is {||true}
- The code block evaluated after finishing of the current column editation
- for its validation. (if returns true the new value is valid)
-
- ^UnRowSize^N: numeric: default is MaxRow()/3
- MemoEdit window height in number of rows.
-
- ^UnColSize^N: numeric: default is MaxCol()/2
- MemoEdit window width in number of columns.
-
- !short: method AddField=MaskAddField //o:AddField(R,C,cShortNm,cField,cPicture,bWhen,bValid) --> true
- ^BMask:AddField(R,C,ShortName,Field,Picture,When,Valid)^N:
- public: return true
- The object is appended with the column defined as normal database field.
-
- Parameter description:
- ~~~~~~~~~~~~~~~~~~~~~~
- ^UR^N: numeric: no default
- Position of edited data (row) relative to left upper window corner.
-
- ^UC^N: numeric: no default
- Position of edited data (column) relative to left upper window corner.
-
- ^UShortName^N: character: default is ""
- The column name used in Browse mode.
-
- ^UcField^N: character: no default
- The full name of the memo field (field->name), if there is no prefix
- it is accepted from instvar variable View:Alias.
-
- ^UcPicture^N: character: default is ""
- The display mask for the column display mode.
-
- ^UWhen^N: code_block: default is {||true}
- The code block evaluated before the begining of the editation of this
- column, if returns false no editation is processed. It enables to produce
- the computed table columns or the read-only columns.
-
- ^UValid^N: code_block: default is {||true}
- The code block evaluated after finishing of the current column editation
- for its validation. (if returns true the new value is valid)
-
- ^UnRowSize^N: numeric: default is MaxRow()/3
- MemoEdit window height in number of rows.
-
- ^UnColSize^N: numeric: default is MaxCol()/2
- MemoEdit window width in number of columns.
-
- !short: method PostInit=MaskPostInit //o:PostInit() --> true
- ^BMask:PostInit()^N: public: return true
- Modifies the implicitly herited initalisation data, because the Mask window
- can't change its size.
-
- !short: method MaskPaint=MaskMaskPaint //o:MaskPaint() --> true
- ^BMask:MaskPaint()^N: public: return true
- The window content is painted if the variable Mask:FormActive==true.
- Otherwise is the parent method VPaint() used.
-
- !short: endclass
-
-