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-- File: TDocStd_XLink.cdl
-- --------------
-- Author: DAUTRY Philippe
-- <fid@fox.paris1.matra-dtv.fr>
---Copyright: MATRA DATAVISION 1997
---Version: 0.0
---History: Version Date Purpose
-- 0.0 Sep 15 1997 Creation
class XLink from TDocStd inherits Attribute from TDF
---Purpose: An attribute to store the path and the entry of
-- external links.
-- These refer from one data structure to a data
-- structure in another document.
uses
GUID from Standard,
AsciiString from TCollection,
Label from TDF,
RelocationTable from TDF,
AttributeDelta from TDF,
Reference from TDF,
XLinkPtr from TDocStd
-- raises
is
-- Class methods ---------------------------------------------------------
Set (myclass; atLabel : Label from TDF)
returns mutable XLink from TDocStd;
---Purpose: Sets an empty external reference, at the label aLabel.
-- -----------------------------------------------------------------------
Create
returns mutable XLink from TDocStd;
---Purpose: Initializes fields.
Update (me : mutable)
returns Reference from TDF;
---Purpose: Updates the data referenced in this external link attribute.
ID(me) returns GUID from Standard
is redefined static;
---Purpose: Returns the ID of the attribute.
--
---C++: return const &
GetID(myclass) returns GUID from Standard;
---Purpose: Returns the GUID for external links.
--
---C++: return const &
DocumentEntry(me : mutable; aDocEntry : AsciiString from TCollection);
---Purpose: Sets the name aDocEntry for the external
-- document in this external link attribute.
DocumentEntry(me)
returns AsciiString from TCollection;
---Purpose: Returns the contents of the document identified by aDocEntry.
-- aDocEntry provides external data to this external link attribute.
---C++ : return const &
LabelEntry(me : mutable; aLabel : Label from TDF);
---Purpose: Sets the label entry for this external link attribute with the label aLabel.
-- aLabel pilots the importation of data from the document entry.
LabelEntry(me : mutable; aLabEntry : AsciiString from TCollection);
---Purpose: Sets the label entry for this external link attribute
-- as a document identified by aLabEntry.
LabelEntry(me)
returns AsciiString from TCollection;
---Purpose: Returns the contents of the field <myLabelEntry>.
--
---C++ : return const &
Next (me : mutable; anXLinkPtr : XLinkPtr from TDocStd)
is private;
---Purpose: Sets the field <myNext> with <anXLinkPtr>.
--
---C++: inline
Next (me)
returns XLinkPtr from TDocStd
is private;
---Purpose: Returns the contents of the field <myNext>.
--
---C++: inline
-- Call back methods.
-- ------------------
AfterAddition(me: mutable)
is redefined static;
---Purpose: Updates the XLinkRoot attribute by adding <me>
-- to its list.
BeforeRemoval(me: mutable)
is redefined static;
---Purpose: Updates the XLinkRoot attribute by removing <me>
-- from its list.
BeforeUndo(me: mutable;
anAttDelta : AttributeDelta from TDF;
forceIt : Boolean from Standard = Standard_False)
returns Boolean from Standard
is redefined;
---Purpose: Something to do before applying <anAttDelta>.
AfterUndo(me: mutable;
anAttDelta : AttributeDelta from TDF;
forceIt : Boolean from Standard = Standard_False)
returns Boolean from Standard
is redefined;
---Purpose: Something to do after applying <anAttDelta>.
-- Modification & Transaction use methods.
-- --------------------------------------
BackupCopy(me) returns mutable Attribute from TDF
is redefined static;
---Purpose: Returns a null handle. Raise allways for ,it is
-- nonsense to use this method.
Restore(me: mutable;
anAttribute : Attribute from TDF)
is redefined static;
---Purpose: Does nothing.
-- Copy use methods
-- ----------------
NewEmpty(me)
returns mutable Attribute from TDF
is redefined static;
---Purpose: Returns a null handle.
Paste(me;
intoAttribute : mutable Attribute from TDF;
aRelocationTable : mutable RelocationTable from TDF)
is redefined static;
---Purpose: Does nothing.
-- Miscelleaneous
-- --------------
Dump(me; anOS : in out OStream from Standard)
returns OStream from Standard
is redefined static;
---Purpose: Dumps the attribute on <aStream>.
---C++ : return &
fields
myDocEntry : AsciiString from TCollection;
myLabelEntry : AsciiString from TCollection;
myNext : XLinkPtr from TDocStd;
friends
class XLinkRoot from TDocStd,
class XLinkIterator from TDocStd
end XLink from TDocStd;
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