ewol/sources/ewol/resources/ResourceManager.cpp

/**
 * @author Edouard DUPIN
 * 
 * @copyright 2011, Edouard DUPIN, all right reserved
 * 
 * @license BSD v3 (see license file)
 */

#include <etk/types.h>
#include <ewol/debug.h>
#include <ewol/resources/ResourceManager.h>
#include <ewol/resources/FontFreeType.h>
#include <ewol/ewol.h>
#include <ewol/renderer/openGL.h>
#include <ewol/renderer/eContext.h>



ewol::ResourceManager::ResourceManager(void) :
  m_contextHasBeenRemoved(true) {
	// nothing to do ...
}

ewol::ResourceManager::~ResourceManager(void) {
	bool hasError = false;
	if (m_resourceListToUpdate.size()!=0) {
		EWOL_ERROR("Must not have anymore resources to update !!!");
		hasError = true;
	}
	if (m_resourceList.size()!=0) {
		EWOL_ERROR("Must not have anymore resources !!!");
		hasError = true;
	}
	if (true == hasError) {
		EWOL_ERROR("Check if the function UnInit has been called !!!");
	}
}

void ewol::ResourceManager::unInit(void) {
	display();
	m_resourceListToUpdate.clear();
	// remove all resources ...
	for (int32_t iii=m_resourceList.size()-1; iii >= 0; iii--) {
		if (m_resourceList[iii] != NULL) {
			EWOL_WARNING("Find a resource that is not removed : [" << m_resourceList[iii]->getUID() << "]"
			             << "=\"" << m_resourceList[iii]->getName() << "\" "
			             << m_resourceList[iii]->getCounter() << " elements");
			delete(m_resourceList[iii]);
			m_resourceList[iii] = NULL;
		}
	}
	m_resourceList.clear();
}

void ewol::ResourceManager::display(void) {
	EWOL_INFO("Resources loaded : ");
	// remove all resources ...
	for (int32_t iii=m_resourceList.size()-1; iii >= 0; iii--) {
		if (m_resourceList[iii] != NULL) {
			EWOL_INFO("    [" << m_resourceList[iii]->getUID() << "]"
			          << m_resourceList[iii]->getType()
			          << "=\"" << m_resourceList[iii]->getName() << "\" "
			          << m_resourceList[iii]->getCounter() << " elements");
		}
	}
	EWOL_INFO("Resources ---");
}

void ewol::ResourceManager::reLoadResources(void) {
	EWOL_INFO("-------------  Resources re-loaded  -------------");
	// remove all resources ...
	if (m_resourceList.size() != 0) {
		for (int32_t jjj=0; jjj<MAX_RESOURCE_LEVEL; jjj++) {
			EWOL_INFO("    Reload level : " << jjj << "/" << (MAX_RESOURCE_LEVEL-1));
			for (int32_t iii=m_resourceList.size()-1; iii >= 0; iii--) {
				if(m_resourceList[iii] != NULL) {
					if (jjj == m_resourceList[iii]->getResourceLevel()) {
						m_resourceList[iii]->reload();
						EWOL_INFO("        [" << m_resourceList[iii]->getUID() << "]="<< m_resourceList[iii]->getType());
					}
				}
			}
		}
	}
	// TODO : UNderstand why it is set here ...
	//ewol::requestUpdateSize();
	EWOL_INFO("-------------  Resources  -------------");
}

void ewol::ResourceManager::update(ewol::Resource* _object) {
	// chek if not added before
	for (int32_t iii=0; iii<m_resourceListToUpdate.size(); iii++) {
		if (m_resourceListToUpdate[iii] != NULL) {
			if (m_resourceListToUpdate[iii] == _object) {
				// just prevent some double add ...
				return;
			}
		}
	}
	// add it ...
	m_resourceListToUpdate.pushBack(_object);
}

// Specific to load or update the data in the openGl context  == > system use only
void ewol::ResourceManager::updateContext(void) {
	if (true == m_contextHasBeenRemoved) {
		// need to update all ...
		m_contextHasBeenRemoved = false;
		if (m_resourceList.size() != 0) {
			for (int32_t jjj=0; jjj<MAX_RESOURCE_LEVEL; jjj++) {
				EWOL_INFO("    updateContext level (D) : " << jjj << "/" << (MAX_RESOURCE_LEVEL-1));
				for (int32_t iii=0; iii<m_resourceList.size(); iii++) {
					if(m_resourceList[iii] != NULL) {
						if (jjj == m_resourceList[iii]->getResourceLevel()) {
							//EWOL_DEBUG("Update context of " << iii << " named : " << l_resourceList[iii]->getName());
							m_resourceList[iii]->updateContext();
						}
					}
				}
			}
		}
	}else {
		if (m_resourceListToUpdate.size() != 0) {
			for (int32_t jjj=0; jjj<MAX_RESOURCE_LEVEL; jjj++) {
				EWOL_INFO("    updateContext level (U) : " << jjj << "/" << (MAX_RESOURCE_LEVEL-1));
				for (int32_t iii=0; iii<m_resourceListToUpdate.size(); iii++) {
					if(m_resourceListToUpdate[iii] != NULL) {
						if (jjj == m_resourceListToUpdate[iii]->getResourceLevel()) {
							m_resourceListToUpdate[iii]->updateContext();
						}
					}
				}
			}
		}
	}
	// Clean the update list
	m_resourceListToUpdate.clear();
}

// in this case, it is really too late ...
void ewol::ResourceManager::contextHasBeenDestroyed(void) {
	for (int32_t iii=0; iii<m_resourceList.size(); iii++) {
		if (m_resourceList[iii] != NULL) {
			m_resourceList[iii]->removeContextToLate();
		}
	}
	// no context preent ...
	m_contextHasBeenRemoved = true;
}

// internal generic keeper ...
ewol::Resource* ewol::ResourceManager::localKeep(const etk::UString& _filename) {
	EWOL_VERBOSE("KEEP (DEFAULT) : file : \"" << _filename << "\"");
	for (int32_t iii=0; iii<m_resourceList.size(); iii++) {
		if (m_resourceList[iii] != NULL) {
			if(m_resourceList[iii]->hasName(_filename)) {
				m_resourceList[iii]->increment();
				return m_resourceList[iii];
			}
		}
	}
	// we did not find it ...
	return NULL;
}

// internal generic keeper ...
void ewol::ResourceManager::localAdd(ewol::Resource* _object) {
	//Add ... find empty slot
	for (int32_t iii=0; iii<m_resourceList.size(); iii++) {
		if (m_resourceList[iii] == NULL) {
			m_resourceList[iii] = _object;
			return;
		}
	}
	// add at the end if no slot is free
	m_resourceList.pushBack(_object);
}

bool ewol::ResourceManager::release(ewol::Resource*& _object) {
	if (NULL == _object) {
		EWOL_ERROR("Try to remove a resource that have null pointer ...");
		return false;
	}
	for (int32_t iii=0; iii<m_resourceListToUpdate.size(); iii++) {
		if (m_resourceListToUpdate[iii] == _object) {
			m_resourceListToUpdate[iii] = NULL;
			//l_resourceListToUpdate.Erase(iii);
		}
	}
	EWOL_VERBOSE("RELEASE (default) : file : \"" << _object->getName() << "\"");
	for (int32_t iii=m_resourceList.size()-1; iii >= 0; iii--) {
		if (m_resourceList[iii] == NULL) {
			continue;
		}
		if(m_resourceList[iii] != _object) {
			continue;
		}
		// insidiously remove the pointer for the caller ...
		_object = NULL;
		if (true == m_resourceList[iii]->decrement()) {
			// delete element
			delete(m_resourceList[iii]);
			// remove element from the list :
			m_resourceList[iii] = NULL;
			return true; // object really removed
		}
		return false; // just decrement ...
	}
	EWOL_ERROR("Can not find the resources in the list : " << (int64_t)_object);
	// insidiously remove the pointer for the caller ...
	_object = NULL;
	return false;
}