/*! Opens specified file. This function does not ask the user to save an
unsaved modified diagram. That is the MainWindow's job. This function
will simply clear out the node vector and load the file in.
*/
void Document::openDocument(QString openName)
{
QDomDocument* xmlDoc = openSaveFile(openName);
QDomElement docElem = getNextDocumentElement(xmlDoc);
QDomElement nodesVectorElement;
QDomElement n;
BaseNode* newNode;
// Clear the nodes vector
nodes.clear();
ordering.clear();
// Get the diagram type
diagramType = static_cast<BaseNode::DiagramType>(docElem.attribute("diagramType").toInt());
// First get out the first (and hopefully only) nodes_vector_element.
nodesVectorElement = docElem.firstChildElement("nodes_vector_element");
// Now we have to iterate over all the Node elements and restor them.
// This style of iteration loop was taken from the Qt documentation for
// QDomElement.
n = nodesVectorElement.firstChildElement("Node");
for (; !n.isNull(); n = n.nextSiblingElement("Node")) {
// Now that we have the QDomElement, try to produce the node
newNode = NodeFactory::getInstance()->produceFromClassName(n.attribute("class_name"));
// Check we failed
if (newNode == 0) {
qDebug() << "Document::openDocument Error: Couldn't produce a " << n.attribute("class_name") << " with the node factory.";
} else {
// Restore the unique id and all the properties
newNode->from_xml(n);
// Push the node onto the node vector
nodes.push_back(newNode);
ordering.push_back(nodes.size()-1);
}
}
// Now that we have all the id's restored, we can restore the connections
// between the nodes. We loop over all the Node elements in
// node_vector_element and loop over all the ConnectedObject elements in
// each Node.
n = nodesVectorElement.firstChildElement("Node");
for (; !n.isNull(); n = n.nextSiblingElement("Node")) {
BaseNode* sourcenode;
QUuid sourceid;
// Find the node that we created earlier from this element
sourceid = QUuid(n.attribute("Id"));
sourcenode = this->findNodeById(sourceid);
if (sourcenode == 0) {
qDebug() << "Document::openDocument Error: Couldn't find source node by id";
} else {
QUuid targetid;
BaseNode* targetnode;
// Now that we have the element and it's associated node, iterate
// over all of the element's children ("ConnectedObjects")
QDomElement child = n.firstChildElement("ConnectedObject");
for (; !child.isNull(); child = child.nextSiblingElement("ConnectedObject")) {
// Find the targeted node by id
targetid = QUuid(child.attribute("id"));
targetnode = this->findNodeById(targetid);
// Check if it failed
if (targetnode == 0) {
qDebug() << "Document::openDocument Error: Couldn't find a target node by id";
} else {
// If it didn't fail, add the connection!
sourcenode->addConnectedNode(targetnode);
}
}
}
}
setFilename(openName);
setModified(false);
update();
}
/*! Slot. Sets the second point in a new connection node.
This function actually creates the node using the NodeFactory.
It doesn't create the node if the first or second point is invalid.
*/
void Document::createConnectionPoint2(const QPoint &point) {
// Create the object only if a valid first object was found
int index;
// creates a temp object node for self connectors
BaseNode *tempnode;
tempnode = NodeFactory::getInstance()->produce(newObjectID);
if (firstConnectionIndex != -1) {
index = getIndexAt(point);
// And the second index was found
if (((index != -1) &&
(nodes.at(index)->isConnector() == false)) &&
index != firstConnectionIndex) {
// produce the object
BaseNode *newNode;
newNode = NodeFactory::getInstance()->produce(newObjectID);
// now connect the connection to both objects, and connect the
// objects to the connections
newNode->addConnectedNode(nodes.at(firstConnectionIndex));
newNode->addConnectedNode(nodes.at(index));
nodes.at(firstConnectionIndex)->addConnectedNode(newNode);
nodes.at(index)->addConnectedNode(newNode);
addNodeToList(newNode);
ordering.append(nodes.size()-1);
nodes.at(index)->setSelectedForConnectionPoint(false);
setModified(true);
emit modelChanged();
}
// Self connectors
// And the second index was found
else if ((((index != -1) &&
(nodes.at(index)->isConnector() == false)) &&
(index == firstConnectionIndex) &&
(tempnode->getText() == "Collaboration Self Line")) ||
((index != -1) && (nodes.at(index)->isConnector() == false)
&&(index == firstConnectionIndex) && (tempnode->getText() == "State Self Line"))) {
// produce the object
BaseNode *newNode;
newNode = NodeFactory::getInstance()->produce(newObjectID);
// now connect the connection to both objects, and connect the
// objects to the connections
newNode->addConnectedNode(nodes.at(firstConnectionIndex));
newNode->addConnectedNode(nodes.at(index));
nodes.at(firstConnectionIndex)->addConnectedNode(newNode);
nodes.at(index)->addConnectedNode(newNode);
addNodeToList(newNode);
ordering.append(nodes.size()-1);
nodes.at(index)->setSelectedForConnectionPoint(false);
setModified(true);
emit modelChanged();
}
// end of self connect
else {
QMessageBox::information(0, "pUML", "No second object selected");
}
}
if (firstConnectionIndex != -1) {
nodes.at(firstConnectionIndex)->setSelectedForConnectionPoint(false);
}
}
