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157 lines
6.5 KiB
C++
157 lines
6.5 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 _MORKROWCELLCURSOR_
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#define _MORKROWCELLCURSOR_ 1
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#ifndef _MORK_
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#include "mork.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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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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class orkinRowCellCursor;
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#define morkDerived_kRowCellCursor /*i*/ 0x6343 /* ascii 'cC' */
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class morkRowCellCursor : public morkCursor, public nsIMdbRowCellCursor { // row iterator
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// public: // slots inherited from morkObject (meant to inform only)
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// nsIMdbHeap* mNode_Heap;
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// mork_able mNode_Mutable; // can this node be modified?
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// mork_load mNode_Load; // is this node clean or dirty?
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// mork_base mNode_Base; // must equal morkBase_kNode
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// mork_derived mNode_Derived; // depends on specific node subclass
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// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
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// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
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// mork_uses mNode_Uses; // refcount for strong refs
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// mork_refs mNode_Refs; // refcount for strong refs + weak refs
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// morkFactory* mObject_Factory; // weak ref to suite factory
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// mork_seed mCursor_Seed;
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// mork_pos mCursor_Pos;
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// mork_bool mCursor_DoFailOnSeedOutOfSync;
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// mork_u1 mCursor_Pad[ 3 ]; // explicitly pad to u4 alignment
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public: // state is public because the entire Mork system is private
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NS_DECL_ISUPPORTS_INHERITED
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morkRowObject* mRowCellCursor_RowObject; // strong ref to row
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mork_column mRowCellCursor_Col; // col of cell last at mCursor_Pos
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// { ===== begin morkNode interface =====
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public: // morkNode virtual methods
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virtual void CloseMorkNode(morkEnv* ev); // CloseRowCellCursor()
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virtual ~morkRowCellCursor(); // assert that close executed earlier
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public: // morkRowCellCursor construction & destruction
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morkRowCellCursor(morkEnv* ev, const morkUsage& inUsage,
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nsIMdbHeap* ioHeap, morkRowObject* ioRowObject);
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void CloseRowCellCursor(morkEnv* ev); // called by CloseMorkNode();
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// { ----- begin attribute methods -----
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NS_IMETHOD SetRow(nsIMdbEnv* ev, nsIMdbRow* ioRow); // sets pos to -1
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NS_IMETHOD GetRow(nsIMdbEnv* ev, nsIMdbRow** acqRow);
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// } ----- end attribute methods -----
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// { ----- begin cell creation methods -----
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NS_IMETHOD MakeCell( // get cell at current pos in the row
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nsIMdbEnv* ev, // 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); // the cell at inPos
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// } ----- end cell creation methods -----
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// { ----- begin cell seeking methods -----
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NS_IMETHOD SeekCell( // same as SetRow() followed by MakeCell()
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nsIMdbEnv* ev, // 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); // the cell at inPos
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// } ----- end cell seeking methods -----
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// { ----- begin cell iteration methods -----
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NS_IMETHOD NextCell( // get next cell in the row
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nsIMdbEnv* ev, // 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); // position of cell in row sequence
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NS_IMETHOD PickNextCell( // get next cell in row within filter set
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nsIMdbEnv* ev, // 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); // position of cell in row sequence
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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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// } ----- end cell iteration methods -----
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private: // copying is not allowed
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morkRowCellCursor(const morkRowCellCursor& other);
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morkRowCellCursor& operator=(const morkRowCellCursor& other);
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public: // dynamic type identification
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mork_bool IsRowCellCursor() const
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{ return IsNode() && mNode_Derived == morkDerived_kRowCellCursor; }
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// } ===== end morkNode methods =====
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public: // errors
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static void NilRowObjectError(morkEnv* ev);
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static void NonRowCellCursorTypeError(morkEnv* ev);
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public: // typesafe refcounting inlines calling inherited morkNode methods
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static void SlotWeakRowCellCursor(morkRowCellCursor* me,
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morkEnv* ev, morkRowCellCursor** ioSlot)
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{ morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
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static void SlotStrongRowCellCursor(morkRowCellCursor* me,
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morkEnv* ev, morkRowCellCursor** ioSlot)
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{ morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
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};
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//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
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#endif /* _MORKROWCELLCURSOR_ */
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