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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _MORKROWCELLCURSOR_
#define _MORKROWCELLCURSOR_ 1
#ifndef _MORK_
#include "mork.h"
#endif
#ifndef _MORKCURSOR_
#include "morkCursor.h"
#endif
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
class orkinRowCellCursor;
#define morkDerived_kRowCellCursor /*i*/ 0x6343 /* ascii 'cC' */
class morkRowCellCursor : public morkCursor, public nsIMdbRowCellCursor { // row iterator
// public: // slots inherited from morkObject (meant to inform only)
// nsIMdbHeap* mNode_Heap;
// mork_able mNode_Mutable; // can this node be modified?
// mork_load mNode_Load; // is this node clean or dirty?
// mork_base mNode_Base; // must equal morkBase_kNode
// mork_derived mNode_Derived; // depends on specific node subclass
// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
// mork_uses mNode_Uses; // refcount for strong refs
// mork_refs mNode_Refs; // refcount for strong refs + weak refs
// morkFactory* mObject_Factory; // weak ref to suite factory
// mork_seed mCursor_Seed;
// mork_pos mCursor_Pos;
// mork_bool mCursor_DoFailOnSeedOutOfSync;
// mork_u1 mCursor_Pad[ 3 ]; // explicitly pad to u4 alignment
public: // state is public because the entire Mork system is private
NS_DECL_ISUPPORTS_INHERITED
morkRowObject* mRowCellCursor_RowObject; // strong ref to row
mork_column mRowCellCursor_Col; // col of cell last at mCursor_Pos
// { ===== begin morkNode interface =====
public: // morkNode virtual methods
virtual void CloseMorkNode(morkEnv* ev) override; // CloseRowCellCursor()
public: // morkRowCellCursor construction & destruction
morkRowCellCursor(morkEnv* ev, const morkUsage& inUsage,
nsIMdbHeap* ioHeap, morkRowObject* ioRowObject);
void CloseRowCellCursor(morkEnv* ev); // called by CloseMorkNode();
// { ----- begin attribute methods -----
NS_IMETHOD SetRow(nsIMdbEnv* ev, nsIMdbRow* ioRow) override; // sets pos to -1
NS_IMETHOD GetRow(nsIMdbEnv* ev, nsIMdbRow** acqRow) override;
// } ----- end attribute methods -----
// { ----- begin cell seeking methods -----
NS_IMETHOD SeekCell(
nsIMdbEnv* ev, // context
mdb_pos inPos, // position of cell in row sequence
mdb_column* outColumn, // column for this particular cell
nsIMdbCell** acqCell) override; // the cell at inPos
// } ----- end cell seeking methods -----
// { ----- begin cell iteration methods -----
NS_IMETHOD NextCell( // get next cell in the row
nsIMdbEnv* ev, // context
nsIMdbCell** acqCell, // changes to the next cell in the iteration
mdb_column* outColumn, // column for this particular cell
mdb_pos* outPos) override; // position of cell in row sequence
NS_IMETHOD PickNextCell( // get next cell in row within filter set
nsIMdbEnv* ev, // context
nsIMdbCell* ioCell, // changes to the next cell in the iteration
const mdbColumnSet* inFilterSet, // col set of actual caller interest
mdb_column* outColumn, // column for this particular cell
mdb_pos* outPos) override; // position of cell in row sequence
// Note that inFilterSet should not have too many (many more than 10?)
// cols, since this might imply a potential excessive consumption of time
// over many cursor calls when looking for column and filter intersection.
// } ----- end cell iteration methods -----
private: // copying is not allowed
morkRowCellCursor(const morkRowCellCursor& other);
morkRowCellCursor& operator=(const morkRowCellCursor& other);
virtual ~morkRowCellCursor(); // assert that close executed earlier
public: // dynamic type identification
mork_bool IsRowCellCursor() const
{ return IsNode() && mNode_Derived == morkDerived_kRowCellCursor; }
// } ===== end morkNode methods =====
public: // errors
static void NilRowObjectError(morkEnv* ev);
static void NonRowCellCursorTypeError(morkEnv* ev);
public: // typesafe refcounting inlines calling inherited morkNode methods
static void SlotWeakRowCellCursor(morkRowCellCursor* me,
morkEnv* ev, morkRowCellCursor** ioSlot)
{ morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
static void SlotStrongRowCellCursor(morkRowCellCursor* me,
morkEnv* ev, morkRowCellCursor** ioSlot)
{ morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
};
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKROWCELLCURSOR_ */
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