cursormanager.cpp

来自「这是VCF框架的代码」· C++ 代码 · 共 125 行

//CursorManager.cpp

/*
Copyright 2000-2004 The VCF Project.
Please see License.txt in the top level directory
where you installed the VCF.
*/


//CursorManager.h

#include "vcf/ApplicationKit/ApplicationKit.h"

using namespace VCF;



CursorManager* CursorManager::create()
{
	if ( NULL == CursorManager::cursorMgrInstance ) {
		CursorManager::cursorMgrInstance = new CursorManager();
		CursorManager::cursorMgrInstance->init();
	}

	return CursorManager::cursorMgrInstance;
}


CursorManager* CursorManager::getCursorManager()
{
	return CursorManager::cursorMgrInstance;
}

CursorManager::CursorManager()
{
	cursorIDCount_ = (long)(Cursor::SCT_WAIT) + 1;
}

CursorManager::~CursorManager()
{
	std::map<long,Cursor*>::iterator it = cursorMap_.begin();
	while ( it != cursorMap_.end() ) {
		Cursor* cursor = it->second;
		delete cursor;
		cursor = NULL;
		it ++;
	}
	cursorMap_.clear();
}

Cursor* CursorManager::getCursor( const long& cursorID )
{
	Cursor* result = NULL;
	std::map<long,Cursor*>::iterator found = cursorMap_.find( cursorID );
	if ( found != cursorMap_.end() ) {
		result = found->second;
	}
	else {

		if ( (cursorID >= (long)Cursor::SCT_DEFAULT) && (cursorID <= (long)Cursor::SCT_WAIT) ) {
			result = new Cursor( (Cursor::SystemCursorType)cursorID );
		}
	}

	return result;
}

void CursorManager::registerCursor( Cursor* cursor )
{
	long cursorID = cursor->getCursorID();
	std::map<long,Cursor*>::iterator found = cursorMap_.find( cursorID );
	if ( found == cursorMap_.end() ) {
		//only add the cursor to the map if it isn't already there
		if ( (cursorID == CursorManager::UNREGISTERED_ID) ||
			((cursorID >= Cursor::SCT_DEFAULT) && (cursorID <= Cursor::SCT_WAIT)) ) {
			if ( cursorID == CursorManager::UNREGISTERED_ID ) {
				cursorID = cursorIDCount_;
				cursor->getPeer()->setCursorID( cursorID );
				cursorIDCount_ ++;
			}
			cursorMap_[cursorID] = cursor;
		}
		else {
			//this is bad - somehow the cursor has an ID but is not present in the
			//map - possibly throw an exception ?
		}
	}
}


/**
*CVS Log info
*$Log$
*Revision 1.2  2004/08/07 02:49:07  ddiego
*merged in the devmain-0-6-5 branch to stable
*
*Revision 1.1.2.2  2004/04/29 03:43:13  marcelloptr
*reformatting of source files: macros and csvlog and copyright sections
*
*Revision 1.1.2.1  2004/04/28 00:28:16  ddiego
*migration towards new directory structure
*
*Revision 1.4  2003/05/17 20:37:47  ddiego
*this is the checkin for the 0.6.1 release - represents the merge over from
*the devmain-0-6-0 branch plus a few minor bug fixes
*
*Revision 1.3.22.2  2003/03/23 03:24:00  marcelloptr
*3 empty lines at the end of the files
*
*Revision 1.3.22.1  2003/03/12 03:13:04  ddiego
*switched all member variable that used the "m_"<name> prefix to
* <name>"_" suffix nameing standard.
*Also changed all vcf builder files to accomadate this.
*Changes were made to the Stream classes to NOT multiple inheritance and to
*be a little more correct. Changes include breaking the FileStream into two
*distinct classes, one for input and one for output.
*
*Revision 1.3  2002/01/24 01:46:50  ddiego
*added a cvs "log" comment to the top of all files in vcf/src and vcf/include
*to facilitate change tracking
*
*/