diff --git a/Modules/QtWidgets/src/QmitkAbstractNodeSelectionWidget.cpp b/Modules/QtWidgets/src/QmitkAbstractNodeSelectionWidget.cpp index 7b77409216..ff1ca235c1 100644 --- a/Modules/QtWidgets/src/QmitkAbstractNodeSelectionWidget.cpp +++ b/Modules/QtWidgets/src/QmitkAbstractNodeSelectionWidget.cpp @@ -1,416 +1,419 @@ /*============================================================================ The Medical Imaging Interaction Toolkit (MITK) Copyright (c) German Cancer Research Center (DKFZ) All rights reserved. Use of this source code is governed by a 3-clause BSD license that can be found in the LICENSE file. ============================================================================*/ #include "QmitkAbstractNodeSelectionWidget.h" #include "QmitkModelViewSelectionConnector.h" QmitkAbstractNodeSelectionWidget::QmitkAbstractNodeSelectionWidget(QWidget* parent) : QWidget(parent), m_InvalidInfo("Error. Select data."), m_EmptyInfo("Empty. Make a selection."), m_PopUpTitel("Select a data node"), m_PopUpHint(""), m_IsOptional(false), m_SelectOnlyVisibleNodes(true), m_DataStorageDeletedTag(0), m_LastEmissionAllowance(true), m_RecursionGuard(false) { } QmitkAbstractNodeSelectionWidget::~QmitkAbstractNodeSelectionWidget() { auto dataStorage = m_DataStorage.Lock(); if (dataStorage.IsNotNull()) { // remove Listener for the data storage itself dataStorage->RemoveObserver(m_DataStorageDeletedTag); // remove "add node listener" from data storage dataStorage->AddNodeEvent.RemoveListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeAddedToStorage)); // remove "remove node listener" from data storage dataStorage->RemoveNodeEvent.RemoveListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeRemovedFromStorage)); } for (auto& node : m_CurrentInternalSelection) { this->RemoveNodeObserver(node); } } QmitkAbstractNodeSelectionWidget::NodeList QmitkAbstractNodeSelectionWidget::GetSelectedNodes() const { return this->CompileEmitSelection(); } QmitkAbstractNodeSelectionWidget::ConstNodeStdVector QmitkAbstractNodeSelectionWidget::GetSelectedNodesStdVector() const { auto result = this->GetSelectedNodes(); return ConstNodeStdVector(result.begin(), result.end()); } void QmitkAbstractNodeSelectionWidget::SetDataStorage(mitk::DataStorage* dataStorage) { if (m_DataStorage == dataStorage) { return; } auto oldStorage = m_DataStorage.Lock(); if (oldStorage.IsNotNull()) { // remove Listener for the data storage itself oldStorage->RemoveObserver(m_DataStorageDeletedTag); // remove "add node listener" from old data storage oldStorage->AddNodeEvent.RemoveListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeAddedToStorage)); // remove "remove node listener" from old data storage oldStorage->RemoveNodeEvent.RemoveListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeRemovedFromStorage)); } m_DataStorage = dataStorage; auto newStorage = m_DataStorage.Lock(); if (newStorage.IsNotNull()) { // add Listener for the data storage itself auto command = itk::SimpleMemberCommand::New(); command->SetCallbackFunction(this, &QmitkAbstractNodeSelectionWidget::SetDataStorageDeleted); m_DataStorageDeletedTag = newStorage->AddObserver(itk::DeleteEvent(), command); // add "add node listener" for new data storage newStorage->AddNodeEvent.AddListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeAddedToStorage)); // add remove node listener for new data storage newStorage->RemoveNodeEvent.AddListener( mitk::MessageDelegate1(this, &QmitkAbstractNodeSelectionWidget::NodeRemovedFromStorage)); } this->OnDataStorageChanged(); this->HandleChangeOfInternalSelection({}); } void QmitkAbstractNodeSelectionWidget::SetNodePredicate(const mitk::NodePredicateBase* nodePredicate) { if (m_NodePredicate != nodePredicate) { m_NodePredicate = nodePredicate; this->OnNodePredicateChanged(); NodeList newInternalNodes; for (auto& node : m_CurrentInternalSelection) { if (m_NodePredicate.IsNull() || m_NodePredicate->CheckNode(node)) { newInternalNodes.append(node); } } if (!m_SelectOnlyVisibleNodes) { for (auto& node : m_CurrentExternalSelection) { if (!newInternalNodes.contains(node) && (m_NodePredicate.IsNull() || m_NodePredicate->CheckNode(node))) { newInternalNodes.append(node); } } } this->HandleChangeOfInternalSelection(newInternalNodes); } } void QmitkAbstractNodeSelectionWidget::HandleChangeOfInternalSelection(NodeList newInternalSelection) { - this->ReviseSelectionChanged(m_CurrentInternalSelection, newInternalSelection); + if (!EqualNodeSelections(m_CurrentInternalSelection, newInternalSelection)) + { + this->ReviseSelectionChanged(m_CurrentInternalSelection, newInternalSelection); - this->SetCurrentInternalSelection(newInternalSelection); + this->SetCurrentInternalSelection(newInternalSelection); - this->OnInternalSelectionChanged(); + this->OnInternalSelectionChanged(); - auto newEmission = this->CompileEmitSelection(); + auto newEmission = this->CompileEmitSelection(); - this->EmitSelection(newEmission); + this->EmitSelection(newEmission); - this->UpdateInfo(); + this->UpdateInfo(); + } } void QmitkAbstractNodeSelectionWidget::SetCurrentSelection(NodeList selectedNodes) { if (!m_RecursionGuard) { m_CurrentExternalSelection = selectedNodes; auto dataStorage = m_DataStorage.Lock(); NodeList newInternalSelection; for (auto node : selectedNodes) { if (dataStorage.IsNotNull() && dataStorage->Exists(node) && (m_NodePredicate.IsNull() || m_NodePredicate->CheckNode(node))) { newInternalSelection.append(node); } } this->HandleChangeOfInternalSelection(newInternalSelection); } } const mitk::NodePredicateBase* QmitkAbstractNodeSelectionWidget::GetNodePredicate() const { return m_NodePredicate; } QString QmitkAbstractNodeSelectionWidget::GetInvalidInfo() const { return m_InvalidInfo; } QString QmitkAbstractNodeSelectionWidget::GetEmptyInfo() const { return m_EmptyInfo; } QString QmitkAbstractNodeSelectionWidget::GetPopUpTitel() const { return m_PopUpTitel; } QString QmitkAbstractNodeSelectionWidget::GetPopUpHint() const { return m_PopUpHint; } bool QmitkAbstractNodeSelectionWidget::GetSelectionIsOptional() const { return m_IsOptional; } bool QmitkAbstractNodeSelectionWidget::GetSelectOnlyVisibleNodes() const { return m_SelectOnlyVisibleNodes; } void QmitkAbstractNodeSelectionWidget::SetSelectOnlyVisibleNodes(bool selectOnlyVisibleNodes) { if (m_SelectOnlyVisibleNodes != selectOnlyVisibleNodes) { m_SelectOnlyVisibleNodes = selectOnlyVisibleNodes; auto newEmission = this->CompileEmitSelection(); this->EmitSelection(newEmission); } } void QmitkAbstractNodeSelectionWidget::SetInvalidInfo(QString info) { m_InvalidInfo = info; this->UpdateInfo(); } void QmitkAbstractNodeSelectionWidget::SetEmptyInfo(QString info) { m_EmptyInfo = info; this->UpdateInfo(); } void QmitkAbstractNodeSelectionWidget::SetPopUpTitel(QString info) { m_PopUpTitel = info; } void QmitkAbstractNodeSelectionWidget::SetPopUpHint(QString info) { m_PopUpHint = info; } void QmitkAbstractNodeSelectionWidget::SetSelectionIsOptional(bool isOptional) { m_IsOptional = isOptional; this->UpdateInfo(); } void QmitkAbstractNodeSelectionWidget::SetDataStorageDeleted() { this->OnDataStorageChanged(); this->HandleChangeOfInternalSelection({}); } void QmitkAbstractNodeSelectionWidget::ReviseSelectionChanged(const NodeList& /*oldInternalSelection*/, NodeList& /*newInternalSelection*/) { } bool QmitkAbstractNodeSelectionWidget::AllowEmissionOfSelection(const NodeList& /*emissionCandidates*/) const { return true; } void QmitkAbstractNodeSelectionWidget::EmitSelection(const NodeList& emissionCandidates) { m_LastEmissionAllowance = this->AllowEmissionOfSelection(emissionCandidates); if (m_LastEmissionAllowance && !EqualNodeSelections(m_LastEmission, emissionCandidates)) { m_RecursionGuard = true; emit CurrentSelectionChanged(emissionCandidates); m_RecursionGuard = false; m_LastEmission = emissionCandidates; } } void QmitkAbstractNodeSelectionWidget::SetCurrentInternalSelection(NodeList selectedNodes) { for (auto& node : m_CurrentInternalSelection) { this->RemoveNodeObserver(node); } m_CurrentInternalSelection = selectedNodes; for (auto& node : m_CurrentInternalSelection) { this->AddNodeObserver(node); } } const QmitkAbstractNodeSelectionWidget::NodeList& QmitkAbstractNodeSelectionWidget::GetCurrentInternalSelection() const { return m_CurrentInternalSelection; } const QmitkAbstractNodeSelectionWidget::NodeList& QmitkAbstractNodeSelectionWidget::GetCurrentExternalSelection() const { return m_CurrentExternalSelection; } void QmitkAbstractNodeSelectionWidget::OnNodePredicateChanged() { } void QmitkAbstractNodeSelectionWidget::OnDataStorageChanged() { } void QmitkAbstractNodeSelectionWidget::OnInternalSelectionChanged() { } void QmitkAbstractNodeSelectionWidget::NodeAddedToStorage(const mitk::DataNode* node) { this->OnNodeAddedToStorage(node); } void QmitkAbstractNodeSelectionWidget::OnNodeAddedToStorage(const mitk::DataNode* /*node*/) { } void QmitkAbstractNodeSelectionWidget::NodeRemovedFromStorage(const mitk::DataNode* node) { this->OnNodeRemovedFromStorage(node); this->RemoveNodeFromSelection(node); } void QmitkAbstractNodeSelectionWidget::OnNodeRemovedFromStorage(const mitk::DataNode* /*node*/) { } QmitkAbstractNodeSelectionWidget::NodeList QmitkAbstractNodeSelectionWidget::CompileEmitSelection() const { NodeList result = m_CurrentInternalSelection; if (!m_SelectOnlyVisibleNodes) { for (auto node : m_CurrentExternalSelection) { if (!result.contains(node) && m_NodePredicate.IsNotNull() && !m_NodePredicate->CheckNode(node)) { result.append(node); } } } return result; } void QmitkAbstractNodeSelectionWidget::RemoveNodeFromSelection(const mitk::DataNode* node) { auto newSelection = m_CurrentInternalSelection; auto finding = std::find(std::begin(newSelection), std::end(newSelection), node); if (finding != std::end(newSelection)) { newSelection.erase(finding); this->HandleChangeOfInternalSelection(newSelection); } } void QmitkAbstractNodeSelectionWidget::OnNodeModified(const itk::Object * caller, const itk::EventObject & event) { if (itk::ModifiedEvent().CheckEvent(&event)) { auto node = dynamic_cast(caller); if (node) { if (m_NodePredicate.IsNotNull() && !m_NodePredicate->CheckNode(node)) { this->RemoveNodeFromSelection(node); } else { auto oldAllowance = m_LastEmissionAllowance; auto newEmission = this->CompileEmitSelection(); auto nonConstNode = const_cast(node); if (newEmission.contains(nonConstNode) && (oldAllowance != this->AllowEmissionOfSelection(newEmission))) { this->EmitSelection(newEmission); this->UpdateInfo(); } } } } } void QmitkAbstractNodeSelectionWidget::AddNodeObserver(mitk::DataNode* node) { if (node) { auto modifiedCommand = itk::MemberCommand::New(); modifiedCommand->SetCallbackFunction(this, &QmitkAbstractNodeSelectionWidget::OnNodeModified); auto nodeModifiedObserverTag = node->AddObserver(itk::ModifiedEvent(), modifiedCommand); m_NodeObserverTags.insert(std::make_pair(node, nodeModifiedObserverTag)); } } void QmitkAbstractNodeSelectionWidget::RemoveNodeObserver(mitk::DataNode* node) { if (node) { auto finding = m_NodeObserverTags.find(node); if (finding != std::end(m_NodeObserverTags)) { node->RemoveObserver(finding->second); } else { MITK_ERROR << "Selection widget is in a wrong state. A node should be removed from the internal selection but seems to have no observer. Node:" << node; } m_NodeObserverTags.erase(node); } }