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327 lines
8.4 KiB
C++
327 lines
8.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _MDB_
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#include "mdb.h"
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#endif
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#ifndef _MORK_
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#include "mork.h"
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#endif
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#ifndef _MORKNODE_
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#include "morkNode.h"
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#endif
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#ifndef _MORKENV_
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#include "morkEnv.h"
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#endif
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#ifndef _MORKCURSOR_
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#include "morkCursor.h"
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#endif
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#ifndef _MORKROWCELLCURSOR_
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#include "morkRowCellCursor.h"
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#endif
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#ifndef _MORKSTORE_
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#include "morkStore.h"
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#endif
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#ifndef _MORKROWOBJECT_
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#include "morkRowObject.h"
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#endif
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#ifndef _MORKROW_
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#include "morkRow.h"
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#endif
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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// ````` ````` ````` ````` `````
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// { ===== begin morkNode interface =====
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/*public virtual*/ void
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morkRowCellCursor::CloseMorkNode(morkEnv* ev) // CloseRowCellCursor() only if open
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{
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if ( this->IsOpenNode() )
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{
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this->MarkClosing();
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this->CloseRowCellCursor(ev);
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this->MarkShut();
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}
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}
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/*public virtual*/
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morkRowCellCursor::~morkRowCellCursor() // CloseRowCellCursor() executed earlier
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{
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CloseMorkNode(mMorkEnv);
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MORK_ASSERT(this->IsShutNode());
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}
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/*public non-poly*/
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morkRowCellCursor::morkRowCellCursor(morkEnv* ev,
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const morkUsage& inUsage,
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nsIMdbHeap* ioHeap, morkRowObject* ioRowObject)
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: morkCursor(ev, inUsage, ioHeap)
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, mRowCellCursor_RowObject( 0 )
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, mRowCellCursor_Col( 0 )
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{
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if ( ev->Good() )
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{
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if ( ioRowObject )
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{
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morkRow* row = ioRowObject->mRowObject_Row;
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if ( row )
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{
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if ( row->IsRow() )
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{
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mCursor_Pos = -1;
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mCursor_Seed = row->mRow_Seed;
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morkRowObject::SlotStrongRowObject(ioRowObject, ev,
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&mRowCellCursor_RowObject);
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if ( ev->Good() )
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mNode_Derived = morkDerived_kRowCellCursor;
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}
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else
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row->NonRowTypeError(ev);
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}
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else
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ioRowObject->NilRowError(ev);
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}
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else
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ev->NilPointerError();
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}
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}
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NS_IMPL_ISUPPORTS_INHERITED1(morkRowCellCursor, morkCursor, nsIMdbRowCellCursor)
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/*public non-poly*/ void
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morkRowCellCursor::CloseRowCellCursor(morkEnv* ev)
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{
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if ( this )
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{
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if ( this->IsNode() )
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{
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mCursor_Pos = -1;
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mCursor_Seed = 0;
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morkRowObject::SlotStrongRowObject((morkRowObject*) 0, ev,
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&mRowCellCursor_RowObject);
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this->CloseCursor(ev);
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this->MarkShut();
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}
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else
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this->NonNodeError(ev);
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}
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else
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ev->NilPointerError();
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}
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// } ===== end morkNode methods =====
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// ````` ````` ````` ````` `````
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/*static*/ void
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morkRowCellCursor::NilRowObjectError(morkEnv* ev)
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{
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ev->NewError("nil mRowCellCursor_RowObject");
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}
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/*static*/ void
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morkRowCellCursor::NonRowCellCursorTypeError(morkEnv* ev)
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{
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ev->NewError("non morkRowCellCursor");
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}
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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// { ----- begin attribute methods -----
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NS_IMETHODIMP
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morkRowCellCursor::SetRow(nsIMdbEnv* mev, nsIMdbRow* ioRow)
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{
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mdb_err outErr = 0;
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morkRow* row = 0;
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morkEnv* ev = morkEnv::FromMdbEnv(mev);
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if ( ev )
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{
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row = (morkRow *) ioRow;
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morkStore* store = row->GetRowSpaceStore(ev);
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if ( store )
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{
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morkRowObject* rowObj = row->AcquireRowObject(ev, store);
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if ( rowObj )
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{
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morkRowObject::SlotStrongRowObject((morkRowObject*) 0, ev,
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&mRowCellCursor_RowObject);
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mRowCellCursor_RowObject = rowObj; // take this strong ref
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mCursor_Seed = row->mRow_Seed;
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row->GetCell(ev, mRowCellCursor_Col, &mCursor_Pos);
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}
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}
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outErr = ev->AsErr();
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}
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return outErr;
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}
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NS_IMETHODIMP
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morkRowCellCursor::GetRow(nsIMdbEnv* mev, nsIMdbRow** acqRow)
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{
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mdb_err outErr = 0;
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nsIMdbRow* outRow = 0;
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morkEnv* ev = morkEnv::FromMdbEnv(mev);
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if ( ev )
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{
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morkRowObject* rowObj = mRowCellCursor_RowObject;
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if ( rowObj )
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outRow = rowObj->AcquireRowHandle(ev);
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outErr = ev->AsErr();
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}
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if ( acqRow )
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*acqRow = outRow;
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return outErr;
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}
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// } ----- end attribute methods -----
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// { ----- begin cell creation methods -----
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NS_IMETHODIMP
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morkRowCellCursor::MakeCell( // get cell at current pos in the row
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nsIMdbEnv* mev, // context
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mdb_column* outColumn, // column for this particular cell
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mdb_pos* outPos, // position of cell in row sequence
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nsIMdbCell** acqCell)
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{
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mdb_err outErr = 0;
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nsIMdbCell* outCell = 0;
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mdb_pos pos = 0;
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mdb_column col = 0;
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morkRow* row = 0;
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morkEnv* ev = morkEnv::FromMdbEnv(mev);
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if ( ev )
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{
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pos = mCursor_Pos;
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morkCell* cell = row->CellAt(ev, pos);
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if ( cell )
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{
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col = cell->GetColumn();
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outCell = row->AcquireCellHandle(ev, cell, col, pos);
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}
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outErr = ev->AsErr();
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}
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if ( acqCell )
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*acqCell = outCell;
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if ( outPos )
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*outPos = pos;
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if ( outColumn )
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*outColumn = col;
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return outErr;
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}
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// } ----- end cell creation methods -----
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// { ----- begin cell seeking methods -----
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NS_IMETHODIMP
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morkRowCellCursor::SeekCell( // same as SetRow() followed by MakeCell()
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nsIMdbEnv* mev, // context
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mdb_pos inPos, // position of cell in row sequence
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mdb_column* outColumn, // column for this particular cell
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nsIMdbCell** acqCell)
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{
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NS_ASSERTION(PR_FALSE, "not implemented");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// } ----- end cell seeking methods -----
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// { ----- begin cell iteration methods -----
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NS_IMETHODIMP
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morkRowCellCursor::NextCell( // get next cell in the row
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nsIMdbEnv* mev, // context
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nsIMdbCell** acqCell, // changes to the next cell in the iteration
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mdb_column* outColumn, // column for this particular cell
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mdb_pos* outPos)
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{
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morkEnv* ev = morkEnv::FromMdbEnv(mev);
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mdb_column col = 0;
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mdb_pos pos = mRowCellCursor_Col;
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if ( pos < 0 )
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pos = 0;
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else
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++pos;
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morkCell* cell = mRowCellCursor_RowObject->mRowObject_Row->CellAt(ev, pos);
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if ( cell )
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{
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col = cell->GetColumn();
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*acqCell = mRowCellCursor_RowObject->mRowObject_Row->AcquireCellHandle(ev, cell, col, pos);
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}
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else
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{
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*acqCell = nsnull;
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pos = -1;
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}
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if ( outPos )
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*outPos = pos;
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if ( outColumn )
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*outColumn = col;
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mRowCellCursor_Col = pos;
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return NS_OK;
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}
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NS_IMETHODIMP
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morkRowCellCursor::PickNextCell( // get next cell in row within filter set
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nsIMdbEnv* mev, // context
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nsIMdbCell* ioCell, // changes to the next cell in the iteration
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const mdbColumnSet* inFilterSet, // col set of actual caller interest
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mdb_column* outColumn, // column for this particular cell
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mdb_pos* outPos)
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// Note that inFilterSet should not have too many (many more than 10?)
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// cols, since this might imply a potential excessive consumption of time
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// over many cursor calls when looking for column and filter intersection.
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{
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NS_ASSERTION(PR_FALSE, "not implemented");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// } ----- end cell iteration methods -----
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// } ===== end nsIMdbRowCellCursor methods =====
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