630 lines
23 KiB
C++
630 lines
23 KiB
C++
/***************************************************************************
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* Copyright (c) 2016 Stefan Tröger <stefantroeger@gmx.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library 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 Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#include <Base/Console.h>
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#include <Base/Exception.h>
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#include <Base/Reader.h>
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#include <Base/Writer.h>
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#include "Extension.h"
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#include "ExtensionContainer.h"
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#include <Base/DocumentReader.h>
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#ifndef _PreComp_
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# include <xercesc/dom/DOM.hpp>
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//# include <xercesc/parsers/XercesDOMParser.hpp>
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#endif
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using namespace App;
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TYPESYSTEM_SOURCE(App::ExtensionContainer, App::PropertyContainer)
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ExtensionContainer::ExtensionContainer() = default;
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ExtensionContainer::~ExtensionContainer() {
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//we need to delete all dynamically added extensions
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for(const auto& entry : _extensions) {
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if(entry.second->isPythonExtension())
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delete entry.second;
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}
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}
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void ExtensionContainer::registerExtension(Base::Type extension, Extension* ext) {
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if(ext->getExtendedContainer() != this)
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throw Base::ValueError("ExtensionContainer::registerExtension: Extension has not this as base object");
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//no duplicate extensions (including base classes)
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if(hasExtension(extension)) {
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for(const auto& entry : _extensions) {
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if(entry.first == extension || entry.first.isDerivedFrom(extension)) {
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_extensions.erase(entry.first);
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break;
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}
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}
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}
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_extensions[extension] = ext;
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}
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bool ExtensionContainer::hasExtension(Base::Type t, bool derived) const {
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//check for the exact type
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bool found = _extensions.find(t) != _extensions.end();
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if(!found && derived) {
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//and for types derived from it, as they can be cast to the extension
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for(const auto& entry : _extensions) {
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if(entry.first.isDerivedFrom(t))
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return true;
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}
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return false;
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}
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return found;
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}
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bool ExtensionContainer::hasExtension(const std::string& name) const {
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//and for types derived from it, as they can be cast to the extension
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for(const auto& entry : _extensions) {
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if(entry.second->name() == name)
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return true;
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}
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return false;
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}
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Extension* ExtensionContainer::getExtension(Base::Type t, bool derived, bool no_except) const {
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auto result = _extensions.find(t);
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if((result == _extensions.end()) && derived) {
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//we need to check for derived types
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for(const auto& entry : _extensions) {
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if(entry.first.isDerivedFrom(t))
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return entry.second;
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}
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if(no_except)
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return nullptr;
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//if we arrive here we don't have anything matching
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throw Base::TypeError("ExtensionContainer::getExtension: No extension of given type available");
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}
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else if (result != _extensions.end()) {
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return result->second;
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}
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else {
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if(no_except)
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return nullptr;
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//if we arrive here we don't have anything matching
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throw Base::TypeError("ExtensionContainer::getExtension: No extension of given type available");
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}
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}
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bool ExtensionContainer::hasExtensions() const {
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return !_extensions.empty();
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}
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Extension* ExtensionContainer::getExtension(const std::string& name) const {
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//and for types derived from it, as they can be cast to the extension
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for(const auto& entry : _extensions) {
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if(entry.second->name() == name)
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return entry.second;
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}
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return nullptr;
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}
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std::vector< Extension* > ExtensionContainer::getExtensionsDerivedFrom(Base::Type type) const {
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std::vector<Extension*> vec;
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//and for types derived from it, as they can be cast to the extension
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for(const auto& entry : _extensions) {
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if(entry.first.isDerivedFrom(type))
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vec.push_back(entry.second);
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}
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return vec;
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}
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void ExtensionContainer::getPropertyList(std::vector< Property* >& List) const {
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App::PropertyContainer::getPropertyList(List);
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for(const auto& entry : _extensions)
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entry.second->extensionGetPropertyList(List);
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}
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void ExtensionContainer::getPropertyMap(std::map< std::string, Property* >& Map) const {
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App::PropertyContainer::getPropertyMap(Map);
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for(const auto& entry : _extensions)
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entry.second->extensionGetPropertyMap(Map);
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}
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Property* ExtensionContainer::getPropertyByName(const char* name) const {
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auto prop = App::PropertyContainer::getPropertyByName(name);
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if(prop)
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return prop;
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for(const auto& entry : _extensions) {
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auto prop = entry.second->extensionGetPropertyByName(name);
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if(prop)
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return prop;
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}
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return nullptr;
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}
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short int ExtensionContainer::getPropertyType(const Property* prop) const {
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short int res = App::PropertyContainer::getPropertyType(prop);
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if(res != 0)
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return res;
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for(const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyType(prop);
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if(res != 0)
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return res;
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}
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return 0;
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}
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short int ExtensionContainer::getPropertyType(const char* name) const {
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short int res = App::PropertyContainer::getPropertyType(name);
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if(res != 0)
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return res;
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for(const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyType(name);
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if(res != 0)
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return res;
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}
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return 0;
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}
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const char* ExtensionContainer::getPropertyName(const Property* prop) const {
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const char* res = App::PropertyContainer::getPropertyName(prop);
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if (res)
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return res;
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for (const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyName(prop);
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if (res)
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return res;
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}
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return nullptr;
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}
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const char* ExtensionContainer::getPropertyGroup(const Property* prop) const {
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const char* res = App::PropertyContainer::getPropertyGroup(prop);
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if (res)
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return res;
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for (const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyGroup(prop);
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if (res)
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return res;
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}
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return nullptr;
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}
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const char* ExtensionContainer::getPropertyGroup(const char* name) const {
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const char* res = App::PropertyContainer::getPropertyGroup(name);
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if (res)
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return res;
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for (const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyGroup(name);
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if (res)
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return res;
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}
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return nullptr;
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}
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const char* ExtensionContainer::getPropertyDocumentation(const Property* prop) const {
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const char* res = App::PropertyContainer::getPropertyDocumentation(prop);
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if (res)
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return res;
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for (const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyDocumentation(prop);
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if (res)
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return res;
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}
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return nullptr;
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}
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const char* ExtensionContainer::getPropertyDocumentation(const char* name) const {
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const char* res = App::PropertyContainer::getPropertyDocumentation(name);
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if (res)
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return res;
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for(const auto& entry : _extensions) {
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res = entry.second->extensionGetPropertyDocumentation(name);
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if (res)
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return res;
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}
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return nullptr;
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}
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void ExtensionContainer::onChanged(const Property* prop) {
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//inform all extensions about changed property. This includes all properties from the
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//extended object (this) as well as all extension properties
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for(const auto& entry : _extensions)
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entry.second->extensionOnChanged(prop);
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App::PropertyContainer::onChanged(prop);
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}
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void ExtensionContainer::Save(Base::Writer& writer) const {
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//Note: save extensions must be called first to ensure that the extension element is always the
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// very first inside the object element. This is needed since extension element works together with
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// an object attribute, and if another element would be read first the object attributes would be
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// cleared.
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saveExtensions(writer);
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App::PropertyContainer::Save(writer);
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}
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void ExtensionContainer::Restore(Base::XMLReader& reader) {
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//restore dynamic extensions.
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//Note 1: The extension element must be read first, before all other object elements. That is
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// needed as the element works together with an object element attribute, which would be
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// cleared if another attribute is read first
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//Note 2: This must happen before the py object of this container is used, as only in the
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// pyobject constructor the extension methods are added to the container.
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restoreExtensions(reader);
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App::PropertyContainer::Restore(reader);
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}
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void ExtensionContainer::Restore(Base::DocumentReader& reader,XERCES_CPP_NAMESPACE_QUALIFIER DOMElement *containerEl) {
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//restore dynamic extensions.
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//Note 1: The extension element must be read first, before all other object elements. That is
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// needed as the element works together with an object element attribute, which would be
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// cleared if another attribute is read first
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//Note 2: This must happen before the py object of this container is used, as only in the
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// pyobject constructor the extension methods are added to the container.
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restoreExtensions(reader,viewProviderEl);
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//App::PropertyContainer::Restore(reader);
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}
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void ExtensionContainer::saveExtensions(Base::Writer& writer) const {
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//we don't save anything if there are no dynamic extensions
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if(!hasExtensions())
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return;
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//save dynamic extensions
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writer.incInd(); // indentation for 'Extensions'
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writer.Stream() << writer.ind() << "<Extensions Count=\"" << _extensions.size() << "\">" << std::endl;
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for(const auto& entry : _extensions) {
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auto ext = entry.second;
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writer.incInd(); // indentation for 'Extension name'
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writer.Stream() << writer.ind() << "<Extension"
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<< " type=\"" << ext->getExtensionTypeId().getName() <<"\""
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<< " name=\"" << ext->name() << "\">" << std::endl;
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writer.incInd(); // indentation for the actual Extension
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try {
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// We must make sure to handle all exceptions accordingly so that
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// the project file doesn't get invalidated. In the error case this
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// means to proceed instead of aborting the write operation.
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ext->extensionSave(writer);
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}
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catch (const Base::Exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const std::exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const char* e) {
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Base::Console().Error("%s\n", e);
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}
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#ifndef FC_DEBUG
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catch (...) {
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Base::Console().Error("ExtensionContainer::Save: Unknown C++ exception thrown. Try to continue...\n");
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}
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#endif
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writer.decInd(); // indentation for the actual extension
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writer.Stream() << writer.ind() << "</Extension>" << std::endl;
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writer.decInd(); // indentation for 'Extension name'
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}
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writer.Stream() << writer.ind() << "</Extensions>" << std::endl;
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writer.decInd();
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}
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void ExtensionContainer::restoreExtensions(Base::DocumentReader& reader,XERCES_CPP_NAMESPACE_QUALIFIER DOMElement *viewProviderEl) {
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//Dynamic extensions are optional (also because they are introduced late into the document format)
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//and hence it is possible that the element does not exist. As we cannot check for the existence of
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//an element a object attribute is set if extensions are available. Here we check that
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//attribute, and only if it exists the extensions element will be available.
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const char* expanded_cstr = reader.GetAttribute(viewProviderEl,"expanded");
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if(!expanded_cstr)
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return;
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auto ExtensionsDOM = reader.FindElement(viewProviderEl,"Extensions");
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if(ExtensionsDOM){
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const char* cnt_cstr = reader.GetAttribute(ExtensionsDOM,"Count");
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if(cnt_cstr){
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long Cnt = reader.ContentToInt( cnt_cstr );
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for (int i=0 ;i<Cnt ;i++) {
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auto ExtensionDOM_i = reader.FindElement(ExtensionsDOM,"Extension");
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const char* type_cstr = reader.GetAttribute(ExtensionDOM_i,"type");
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const char* name_cstr = reader.GetAttribute(ExtensionDOM_i,"name");
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try {
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App::Extension* ext = getExtension(name_cstr);
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if(!ext) {
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//get the extension type asked for
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Base::Type extension = Base::Type::fromName(type_cstr);
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if (extension.isBad() || !extension.isDerivedFrom(App::Extension::getExtensionClassTypeId())) {
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std::stringstream str;
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str << "No extension found of type '" << type_cstr << "'" << std::ends;
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throw Base::TypeError(str.str());
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}
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//register the extension
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ext = static_cast<App::Extension*>(extension.createInstance());
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//check if this really is a python extension!
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if (!ext->isPythonExtension()) {
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delete ext;
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std::stringstream str;
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str << "Extension is not a python addable version: '" << type_cstr << "'" << std::ends;
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throw Base::TypeError(str.str());
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}
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ext->initExtension(this);
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if( strcmp(ext->getExtensionTypeId().getName(), type_cstr) == 0 )
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ext->extensionRestore(reader);
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}
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}
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catch (const Base::XMLParseException&) {
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throw; // re-throw
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}
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catch (const Base::Exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const std::exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const char* e) {
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Base::Console().Error("%s\n", e);
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}
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#ifndef FC_DEBUG
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catch (...) {
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Base::Console().Error("ExtensionContainer::Restore: Unknown C++ exception thrown\n");
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}
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#endif
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}
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}
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}
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}
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void ExtensionContainer::restoreExtensions(Base::DocumentReader& reader,XERCES_CPP_NAMESPACE_QUALIFIER DOMElement *containerEl) {
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//Dynamic extensions are optional (also because they are introduced late into the document format)
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//and hence it is possible that the element does not exist. As we cannot check for the existence of
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//an element a object attribute is set if extensions are available. Here we check that
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//attribute, and only if it exists the extensions element will be available.
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const char* expanded_cstr = reader.GetAttribute(containerEl,"expanded");
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if(!expanded_cstr)
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return;
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auto ExtensionsDOM = reader.FindElement(containerEl,"Extensions");
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if(ExtensionsDOM){
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const char* cnt_cstr = reader.GetAttribute(ExtensionsDOM,"Count");
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if(cnt_cstr){
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long Cnt = reader.ContentToInt( cnt_cstr );
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auto prev_ExtensionDOM = reader.FindElement(ExtensionsDOM,"Extension");
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readExtension(reader,prev_ExtensionDOM);
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for (int i=1 ;i<Cnt ;i++) {
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auto ExtensionDOM_i = reader.FindNextElement(prev_ExtensionDOM,"Extension");
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readExtension(reader,ExtensionDOM_i);
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prev_ExtensionDOM = ExtensionDOM_i;
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}
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}
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}
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}
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void ExtensionContainer::readExtension(Base::DocumentReader &reader,XERCES_CPP_NAMESPACE_QUALIFIER DOMElement *ExtensionDOM){
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const char* type_cstr = reader.GetAttribute(ExtensionDOM,"type");
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const char* name_cstr = reader.GetAttribute(ExtensionDOM,"name");
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try {
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App::Extension* ext = getExtension(name_cstr);
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if(!ext) {
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//get the extension type asked for
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Base::Type extension = Base::Type::fromName(type_cstr);
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if (extension.isBad() || !extension.isDerivedFrom(App::Extension::getExtensionClassTypeId())) {
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std::stringstream str;
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str << "No extension found of type '" << type_cstr << "'" << std::ends;
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throw Base::TypeError(str.str());
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}
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//register the extension
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ext = static_cast<App::Extension*>(extension.createInstance());
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//check if this really is a python extension!
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if (!ext->isPythonExtension()) {
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delete ext;
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std::stringstream str;
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str << "Extension is not a python addable version: '" << type_cstr << "'" << std::ends;
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throw Base::TypeError(str.str());
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}
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ext->initExtension(this);
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if( strcmp(ext->getExtensionTypeId().getName(), type_cstr) == 0 )
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ext->extensionRestore(reader);
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}
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}
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catch (const Base::XMLParseException&) {
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throw; // re-throw
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}
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catch (const Base::Exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const std::exception &e) {
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Base::Console().Error("%s\n", e.what());
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}
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catch (const char* e) {
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Base::Console().Error("%s\n", e);
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}
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#ifndef FC_DEBUG
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catch (...) {
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Base::Console().Error("ExtensionContainer::Restore: Unknown C++ exception thrown\n");
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}
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#endif
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}
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void ExtensionContainer::restoreExtensions(Base::XMLReader& reader) {
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//Dynamic extensions are optional (also because they are introduced late into the document format)
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//and hence it is possible that the element does not exist. As we cannot check for the existence of
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//an element a object attribute is set if extensions are available. Here we check that
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//attribute, and only if it exists the extensions element will be available.
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if(!reader.hasAttribute("Extensions"))
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return;
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reader.readElement("Extensions");
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int Cnt = reader.getAttributeAsInteger("Count");
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for (int i=0 ;i<Cnt ;i++) {
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reader.readElement("Extension");
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const char* Type = reader.getAttribute("type");
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const char* Name = reader.getAttribute("name");
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try {
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App::Extension* ext = getExtension(Name);
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if(!ext) {
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//get the extension type asked for
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Base::Type extension = Base::Type::fromName(Type);
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if (extension.isBad() || !extension.isDerivedFrom(App::Extension::getExtensionClassTypeId())) {
|
|
std::stringstream str;
|
|
str << "No extension found of type '" << Type << "'" << std::ends;
|
|
throw Base::TypeError(str.str());
|
|
}
|
|
|
|
//register the extension
|
|
ext = static_cast<App::Extension*>(extension.createInstance());
|
|
//check if this really is a python extension!
|
|
if (!ext->isPythonExtension()) {
|
|
delete ext;
|
|
std::stringstream str;
|
|
str << "Extension is not a python addable version: '" << Type << "'" << std::ends;
|
|
throw Base::TypeError(str.str());
|
|
}
|
|
|
|
ext->initExtension(this);
|
|
}
|
|
if (ext && strcmp(ext->getExtensionTypeId().getName(), Type) == 0)
|
|
ext->extensionRestore(reader);
|
|
}
|
|
catch (const Base::XMLParseException&) {
|
|
throw; // re-throw
|
|
}
|
|
catch (const Base::Exception &e) {
|
|
Base::Console().Error("%s\n", e.what());
|
|
}
|
|
catch (const std::exception &e) {
|
|
Base::Console().Error("%s\n", e.what());
|
|
}
|
|
catch (const char* e) {
|
|
Base::Console().Error("%s\n", e);
|
|
}
|
|
#ifndef FC_DEBUG
|
|
catch (...) {
|
|
Base::Console().Error("ExtensionContainer::Restore: Unknown C++ exception thrown\n");
|
|
}
|
|
#endif
|
|
|
|
reader.readEndElement("Extension");
|
|
}
|
|
reader.readEndElement("Extensions");
|
|
}
|
|
|
|
void ExtensionContainer::handleChangedPropertyName(Base::XMLReader &reader, const char * TypeName, const char *PropName)
|
|
{
|
|
//inform all extensions about changed property name. This includes all properties from the
|
|
//extended object (this) as well as all extension properties
|
|
for(const auto& entry : _extensions) {
|
|
bool handled = entry.second->extensionHandleChangedPropertyName(reader, TypeName, PropName);
|
|
|
|
if(handled)
|
|
return; // one property change needs only be handled once
|
|
}
|
|
|
|
PropertyContainer::handleChangedPropertyName(reader, TypeName, PropName);
|
|
}
|
|
|
|
void ExtensionContainer::handleChangedPropertyName(Base::DocumentReader &reader, const char * TypeName, const char *PropName)
|
|
{
|
|
//inform all extensions about changed property name. This includes all properties from the
|
|
//extended object (this) as well as all extension properties
|
|
for(const auto& entry : _extensions) {
|
|
bool handled = entry.second->extensionHandleChangedPropertyName(reader, TypeName, PropName);
|
|
|
|
if(handled)
|
|
return; // one property change needs only be handled once
|
|
}
|
|
|
|
PropertyContainer::handleChangedPropertyName(reader, TypeName, PropName);
|
|
}
|
|
|
|
void ExtensionContainer::handleChangedPropertyType(Base::XMLReader &reader, const char * TypeName, Property * prop)
|
|
{
|
|
//inform all extensions about changed property type. This includes all properties from the
|
|
//extended object (this) as well as all extension properties
|
|
for(const auto& entry : _extensions) {
|
|
bool handled = entry.second->extensionHandleChangedPropertyType(reader, TypeName, prop);
|
|
|
|
if(handled)
|
|
return; // one property change needs only be handled once
|
|
}
|
|
|
|
PropertyContainer::handleChangedPropertyType(reader, TypeName, prop);
|
|
}
|
|
|
|
void ExtensionContainer::handleChangedPropertyType(Base::DocumentReader &reader, const char * TypeName, Property * prop)
|
|
{
|
|
//inform all extensions about changed property type. This includes all properties from the
|
|
//extended object (this) as well as all extension properties
|
|
for(const auto& entry : _extensions) {
|
|
bool handled = entry.second->extensionHandleChangedPropertyType(reader, TypeName, prop);
|
|
|
|
if(handled)
|
|
return; // one property change needs only be handled once
|
|
}
|
|
|
|
PropertyContainer::handleChangedPropertyType(reader, TypeName, prop);
|
|
}
|