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/*********************************************************************** |
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* Copyright (C) 2002-2003 by Gezelter's Group
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*This program is free software; you can redistribute it and/or modify
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*it under the terms of the GNU General Public License as published by
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*the Free Software Foundation version 2 of the License.
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*
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*This program is distributed in the hope that it will be useful,
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*but WITHOUT ANY WARRANTY; without even the implied warranty of
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*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*GNU General Public License for more details.
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*
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************************************************************************ |
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*Author: Teng Lin Email: tlin@nd.edu |
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*Date: 08/13/2002 Version: 1.0 |
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* |
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************************************************************************ |
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*Description: |
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* |
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***********************************************************************/ |
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#include "event.h" |
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/*********************************************************************** |
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* Class TEventItem |
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***********************************************************************/ |
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void TEventItem::Clear() |
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{ |
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_handlers.clear(); |
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} |
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TEventItem::TEventItem(TEventObject *object) |
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{ |
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Clear(); |
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|
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_object = object; |
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} |
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TEventItem::~TEventItem() |
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{ |
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Clear(); |
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} |
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|
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void TEventItem::AddHandler(PEventHandler handler) |
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{ |
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vector<PEventHandler>::iterator i; |
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i = find(_handlers.begin(), _handlers.end(), handler); |
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|
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if (i == _handlers.end()) |
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{ |
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_handlers.push_back(handler); |
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} |
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} |
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|
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void TEventItem::RemoveHandler(PEventHandler handler) |
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{ |
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vector<PEventHandler>::iterator i; |
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i = find(_handlers.begin(), _handlers.end(), handler); |
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|
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if (i != _handlers.end()) |
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{ |
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_handlers.erase(i); |
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} |
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|
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} |
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/*********************************************************************** |
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* Class TEventItems |
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***********************************************************************/ |
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void TEventItems::Clear() |
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{ |
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for(int i=0; i<_items.size(); i++) |
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{ |
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if (_items[i] != NULL) |
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{ |
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delete _items[i]; |
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} |
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} |
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|
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_items.clear(); |
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} |
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TEventItems::TEventItems() |
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{ |
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Clear(); |
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|
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SetType(TEventType::Unknown); |
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} |
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|
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TEventItems::TEventItems(int eventType) |
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{ |
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Clear(); |
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SetType(eventType); |
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} |
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|
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TEventItems::~TEventItems() |
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{ |
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Clear(); |
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} |
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|
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void TEventItems::AddItem(TEventObject *object, PEventHandler handler) |
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{ |
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TEventItem * item; |
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item = GetEventItem(object); |
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if (item != NULL) |
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{ |
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item->AddHandler(handler); |
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} |
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else |
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{ |
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item = new TEventItem(object); |
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if(item != NULL) |
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{ |
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item->AddHandler(handler); |
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_items.push_back(item); |
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} |
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else |
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{ |
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//Memory allocation fail |
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} |
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} |
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} |
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void TEventItems::RemoveItem(TEventObject *object, PEventHandler handler) |
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{ |
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TEventItem * item; |
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item = GetEventItem(object); |
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if (item !=NULL) |
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{ |
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item->RemoveHandler(handler); |
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if (item->Count() == 0) |
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_items.erase(find(_items.begin(), _items.end(), item)); |
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} |
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} |
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void TEventItems::RemoveItem(TEventObject *object) |
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{ |
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vector<TEventItem *>::iterator i; |
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i = find_if(_items.begin(), _items.end(), TMatchEventItem(object)); |
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if (i != _items.end()) |
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{ |
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delete *i; |
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_items.erase(i); |
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} |
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} |
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TEventItem *TEventItems::GetEventItem(TEventObject *object) |
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{ |
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vector<TEventItem *>::iterator i; |
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i = find_if(_items.begin(), _items.end(), TMatchEventItem(object)); |
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if (i != _items.end()) |
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{ |
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return *i; |
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} |
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else |
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{ |
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return NULL; |
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} |
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} |
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void TEventItems::Dispatch(TEventDispatcher *dispatcher, void *extra) |
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{ |
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|
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} |
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/*********************************************************************** |
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* Class TEventTable |
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***********************************************************************/ |
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void TEventTable::Clear() |
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{ |
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for(int i=0; i<_table.size(); i++) |
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{ |
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if (_table[i] != NULL) |
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delete _table[i]; |
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} |
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_table.clear(); |
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} |
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TEventTable::TEventTable() |
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{ |
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Clear(); |
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} |
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TEventTable::~TEventTable() |
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{ |
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Clear(); |
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} |
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void TEventTable::AddItem(int eventType, |
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TEventObject *object, PEventHandler handler) |
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{ |
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TEventItems *items; |
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items = GetEventItemsByType(eventType); |
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if (items == NULL) |
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{ |
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items = new TEventItems(eventType); |
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if (items != NULL) |
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{ |
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items->AddItem(object, handler); |
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_table.push_back(items); |
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} |
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else |
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{ |
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//Error |
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} |
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} |
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else |
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{ |
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items->AddItem(object, handler); |
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} |
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} |
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void TEventTable::RemoveItem(int eventType, |
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TEventObject *object, PEventHandler handler) |
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{ |
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TEventItems *items; |
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items = GetEventItemsByType(eventType); |
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if (items != NULL) |
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{ |
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items->RemoveItem(object, handler); |
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} |
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} |
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void TEventTable::RemoveItem(int eventType, TEventObject *object) |
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{ |
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TEventItems *items; |
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items = GetEventItemsByType(eventType); |
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if (items != NULL) |
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{ |
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items->RemoveItem(object); |
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} |
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} |
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void TEventTable::RemoveItem(TEventObject *object) |
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{ |
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for(int i=0; i<_table.size(); i++) |
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RemoveItem(_table[i]->_eventType, object); |
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} |
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TEventItems *TEventTable::GetEventItemsByType(int eventType) |
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{ |
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vector<TEventItems*>::iterator i; |
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i = find_if(_table.begin(), _table.end(), TMatchEventItems(eventType)); |
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if(i == _table.end()) |
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{ |
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return NULL; |
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} |
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else |
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{ |
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return *i; |
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} |
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} |
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void TEventTable::Dispatch(int eventType, |
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TEventDispatcher *dispatcher, void *extra) |
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{ |
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TEventItems *items; |
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items = GetEventItemsByType(eventType); |
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if (items != NULL) |
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{ |
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items->Dispatch(dispatcher, extra); |
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} |
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else |
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{ |
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return; |
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} |
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} |
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/*********************************************************************** |
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* Class TEventObject |
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***********************************************************************/ |
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TEventObject::~TEventObject() |
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{ |
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UnRegister(this); |
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} |
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void TEventObject::Register(int eventType, TEventObject *object, |
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PEventHandler handler) |
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{ |
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_table->AddItem(eventType, object, handler); |
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} |
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void TEventObject::UnRegister(int eventType, TEventObject *object, |
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PEventHandler handler) |
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{ |
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_table->RemoveItem(eventType, object, handler); |
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} |
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void TEventObject::UnRegister(int eventType, TEventObject *object) |
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{ |
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_table->RemoveItem(eventType, object); |
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} |
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void TEventObject::UnRegister(TEventObject *object) |
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{ |
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_table->RemoveItem(object); |
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} |
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/*********************************************************************** |
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* Class TEventDispatcher |
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***********************************************************************/ |
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void TEventDispatcher::Dispatch(int eventType, |
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TEventDispatcher *dispatcher,void *extra) |
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{ |
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_table->Dispatch(eventType, dispatcher, extra); |
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} |
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