(#566) Major rewrite of how to build and update PdmUiTreeOrdering items

Removed findChildItemIndex() which caused performance issues for large
models. Replaced with a new algorithm using std::map. Added unit tests

Fwk/AppFwk/CMakeLists.txt

@@ -23,6 +23,8 @@ add_subdirectory(cafTests/cafTestApplication)
 add_subdirectory (cafProjectDataModel/cafPdmCore/cafPdmCore_UnitTests)
 add_subdirectory (cafProjectDataModel/cafPdmXml/cafPdmXml_UnitTests)
 
+add_subdirectory (cafUserInterface/cafUserInterface_UnitTests)
+
 # Organize sub-projects into folders on Visual Studio
 # Turn on using solution folders
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)

Fwk/AppFwk/cafProjectDataModel/cafPdmUiCore/cafPdmUiTreeOrdering.cpp

@@ -108,7 +108,7 @@ bool PdmUiTreeOrdering::containsObject(const PdmObjectHandle* object)
     assert (object);
     for (int cIdx = 0; cIdx < this->childCount(); ++cIdx)
     {
-        PdmUiTreeOrdering* child = dynamic_cast<PdmUiTreeOrdering*>(this->child(cIdx)); // What again ???
+        PdmUiTreeOrdering* child = this->child(cIdx);
 
         if (child->isRepresentingObject() && child->object() == object)
         {

Fwk/AppFwk/cafUserInterface/cafPdmUiTreeViewModel.cpp

@@ -180,8 +180,12 @@ void PdmUiTreeViewModel::updateSubTree(PdmUiItem* pdmRoot)
     existingSubTreeRoot->debugDump(0);
 #endif
 
+    this->layoutAboutToBeChanged();
+
     updateSubTreeRecursive(existingSubTreeRootModIdx, existingSubTreeRoot, newTreeRootTmp);
 
+    emit (this->layoutChanged());
+
     delete newTreeRootTmp;
 
     updateEditorsForSubTree(existingSubTreeRoot);
@@ -195,99 +199,116 @@ void PdmUiTreeViewModel::updateSubTree(PdmUiItem* pdmRoot)
 #endif	
 }
 
+class RecursiveUpdateData
+{
+public:
+    RecursiveUpdateData(QModelIndex mi, PdmUiTreeOrdering* existingChild, PdmUiTreeOrdering* sourceChild)
+        : m_modelIndex(mi),
+        m_existingChild(existingChild),
+        m_sourceChild(sourceChild)
+    {
+    };
+
+    QModelIndex         m_modelIndex;
+    PdmUiTreeOrdering*  m_existingChild;
+    PdmUiTreeOrdering*  m_sourceChild;
+};
+
 //--------------------------------------------------------------------------------------------------
-/// Makes the destinationSubTreeRoot tree become identical to the tree in sourceSubTreeRoot, 
+/// Makes the existingSubTreeRoot tree become identical to the tree in sourceSubTreeRoot, 
 /// calling begin..() end..() to make the UI update accordingly.
 /// This assumes that all the items have a pointer an unique PdmObject 
 //--------------------------------------------------------------------------------------------------
 void PdmUiTreeViewModel::updateSubTreeRecursive(const QModelIndex& existingSubTreeRootModIdx, PdmUiTreeOrdering* existingSubTreeRoot, PdmUiTreeOrdering* sourceSubTreeRoot)
 {
-    // First loop over children in the old ui tree, deleting the ones not present in 
-    // the newUiTree
+    std::vector<RecursiveUpdateData> recursiveUpdateData;
 
-    for (int cIdx = 0; cIdx < existingSubTreeRoot->childCount() ; ++cIdx)
+    // Build map for source items
+    std::map<caf::PdmUiItem*, int> sourceTreeMap;
+    for (int i = 0; i < sourceSubTreeRoot->childCount() ; ++i)
     {
-        PdmUiTreeOrdering* oldChild = existingSubTreeRoot->child(cIdx);
+        PdmUiTreeOrdering* child = sourceSubTreeRoot->child(i);
 
-        int childIndex = findChildItemIndex(sourceSubTreeRoot, oldChild->activeItem());
-
-        if (childIndex == -1) // Not found
+        if (child && child->activeItem())
         {
-            this->beginRemoveRows(existingSubTreeRootModIdx, cIdx, cIdx);
-            existingSubTreeRoot->removeChildren(cIdx, 1);
-            this->endRemoveRows();
-            cIdx--;
+            sourceTreeMap[child->activeItem()] = i;
         }
     }
 
-    // Then loop over the children in the new ui tree, finding the corresponding items in the old tree. 
-    // If they are found, we move them to the correct position. 
-    // If not found, we pull the item out of the old ui tree, inserting it 
-    // into the new tree.
-
-    int sourceChildCount = sourceSubTreeRoot->childCount();
-    int source_cIdx = 0;
-
-    for (int cIdx = 0; cIdx < sourceChildCount; ++cIdx, ++source_cIdx)
+    // Build map for existing items
+    // Detect items to be deleted from existing tree
+    std::vector<int> indicesToRemoveFromExisting;
+    std::map<caf::PdmUiItem*, int> existingTreeMap;
+    for (int i = 0; i < existingSubTreeRoot->childCount() ; ++i)
     {
-        PdmUiTreeOrdering* newChild = sourceSubTreeRoot->child(source_cIdx);
+        PdmUiTreeOrdering* child = existingSubTreeRoot->child(i);
 
-        int existing_cIdx = findChildItemIndex(existingSubTreeRoot, newChild->activeItem());
-
-        if (existing_cIdx == -1) // Not found, move from source to existing
+        if (child && child->activeItem())
         {
-            this->beginInsertRows(existingSubTreeRootModIdx, cIdx, cIdx);
-            existingSubTreeRoot->insertChild(cIdx, newChild);
-            this->endInsertRows();
-
-            sourceSubTreeRoot->removeChildrenNoDelete(source_cIdx, 1);
-            source_cIdx--;
+            existingTreeMap[child->activeItem()] = i;
         }
-        else if (existing_cIdx != cIdx) // Found, but must be moved
+
+        std::map<caf::PdmUiItem*, int>::iterator it = sourceTreeMap.find(child->activeItem());
+        if (it == sourceTreeMap.end())
         {
-            assert(existing_cIdx > cIdx);
-
-            PdmUiTreeOrdering* oldChild = existingSubTreeRoot->child(existing_cIdx);
-
-            this->beginMoveRows(existingSubTreeRootModIdx, existing_cIdx, existing_cIdx, existingSubTreeRootModIdx, cIdx);
-            existingSubTreeRoot->removeChildrenNoDelete(existing_cIdx, 1);
-            existingSubTreeRoot->insertChild(cIdx, oldChild);
-            this->endMoveRows();
-
-            updateSubTreeRecursive( index(cIdx, 0, existingSubTreeRootModIdx), oldChild, newChild);
-        }
-        else // Found the corresponding item in the right place.
-        {
-            PdmUiTreeOrdering* oldChild = existingSubTreeRoot->child(existing_cIdx);
-
-            updateSubTreeRecursive( index(cIdx, 0, existingSubTreeRootModIdx), oldChild, newChild);
+            indicesToRemoveFromExisting.push_back(i);
         }
     }
-}
 
-//--------------------------------------------------------------------------------------------------
-/// Returns the index of the first child with activeItem() == pdmItemToFindInChildren. 
-//  -1 if not found or pdmItemToFindInChildren == NULL
-//--------------------------------------------------------------------------------------------------
-int PdmUiTreeViewModel::findChildItemIndex(const PdmUiTreeOrdering * parent, const PdmUiItem* pdmItemToFindInChildren)
-{
-    if (pdmItemToFindInChildren == NULL) return -1;
+    PdmUiTreeOrdering newOrdering("dummy", "dummy");
 
-    for (int i = 0; i < parent->childCount(); ++i)
+    // Detect items to be moved from source to existing
+    // Build the correct ordering of items in newOrdering
+    std::vector<int> indicesToRemoveFromSource;
+    for (int i = 0; i < sourceSubTreeRoot->childCount() ; ++i)
     {
-        PdmUiTreeOrdering* child = parent->child(i);
-        if (child->activeItem() == pdmItemToFindInChildren)
-        {
-            return i;
-        }
-        else if (child->isDisplayItemOnly())
-        {
-            // Todo, possibly. Find a way to check for equality based on content
-            // until done, the display items will always be regenerated with all their children
-        }
+        PdmUiTreeOrdering* sourceChild = sourceSubTreeRoot->child(i);
 
+        std::map<caf::PdmUiItem*, int>::iterator it = existingTreeMap.find(sourceChild->activeItem());
+        if (it != existingTreeMap.end())
+        {
+            newOrdering.appendChild(existingSubTreeRoot->child(it->second));
+
+            recursiveUpdateData.push_back(RecursiveUpdateData(index(newOrdering.childCount() - 1, 0, existingSubTreeRootModIdx), existingSubTreeRoot->child(it->second), sourceChild));
+        }
+        else
+        {
+            newOrdering.appendChild(sourceChild);
+
+            indicesToRemoveFromSource.push_back(i);
+        }
+    }
+
+    // Delete items with largest index first from existing
+    for (std::vector<int>::reverse_iterator it = indicesToRemoveFromExisting.rbegin(); it != indicesToRemoveFromExisting.rend(); it++)
+    {
+        this->beginRemoveRows(existingSubTreeRootModIdx, *it, *it);
+        existingSubTreeRoot->removeChildren(*it, 1);
+        this->endRemoveRows();
+    }
+
+    // Delete items with largest index first from source
+    for (std::vector<int>::reverse_iterator it = indicesToRemoveFromSource.rbegin(); it != indicesToRemoveFromSource.rend(); it++)
+    {
+        // Use the removeChildrenNoDelete() to remove the pointer from the list without deleting the pointer
+        sourceSubTreeRoot->removeChildrenNoDelete(*it, 1);
+    }
+
+    // Delete all items from existingSubTreeRoot, as the complete list is present in newOrdering
+    existingSubTreeRoot->removeChildrenNoDelete(0, existingSubTreeRoot->childCount());
+
+    // Move all items into existingSubTreeRoot
+    for (int i = 0; i < newOrdering.childCount(); i++)
+    {
+        existingSubTreeRoot->appendChild(newOrdering.child(i));
+    }
+   
+    newOrdering.removeChildrenNoDelete(0, newOrdering.childCount());
+
+    for (size_t i = 0; i < recursiveUpdateData.size(); i++)
+    {
+        updateSubTreeRecursive(recursiveUpdateData[i].m_modelIndex, recursiveUpdateData[i].m_existingChild, recursiveUpdateData[i].m_sourceChild);
     }
-    return -1;
 }
 
 //--------------------------------------------------------------------------------------------------

Fwk/AppFwk/cafUserInterface/cafPdmUiTreeViewModel.h

@@ -40,7 +40,6 @@
 
 #include <QAbstractItemModel>
 #include <QStringList>
-#include "cafPdmUiTreeOrdering.h"
 
 namespace caf
 {
@@ -85,7 +84,6 @@ private:
     void                    resetTree(PdmUiTreeOrdering* root);
     void                    emitDataChanged(const QModelIndex& index);
     void                    updateEditorsForSubTree(PdmUiTreeOrdering* root);
-    static int              findChildItemIndex(const PdmUiTreeOrdering * parent, const PdmUiItem* pdmItemToFindInChildren);
 
     PdmUiTreeOrdering*      m_treeOrderingRoot;
     QStringList             m_columnHeaders;

Fwk/AppFwk/cafUserInterface/cafUserInterface_UnitTests/CMakeLists.txt

@@ -0,0 +1,61 @@
+cmake_minimum_required (VERSION 2.8)
+
+find_package ( Qt4 COMPONENTS QtCore QtGui QtMain )
+include (${QT_USE_FILE})
+
+project ( cafUserInterface_UnitTests )
+
+include_directories (
+	${CMAKE_CURRENT_SOURCE_DIR}
+	${CMAKE_CURRENT_SOURCE_DIR}/..
+
+    ${cafProjectDataModel_SOURCE_DIR}
+    ${cafPdmCore_SOURCE_DIR}
+    ${cafPdmUiCore_SOURCE_DIR}
+    ${cafPdmXml_SOURCE_DIR}
+    
+    ${cafUserInterface_SOURCE_DIR}
+   
+)
+
+
+set( PROJECT_FILES
+
+	cafUserInterface_UnitTests.cpp 
+	
+	cafPdmUiTreeViewModelTest.cpp 
+
+	gtest/gtest-all.cpp
+)
+
+# add the executable 
+add_executable (${PROJECT_NAME}
+	${PROJECT_FILES}
+)
+
+source_group("" FILES ${PROJECT_FILES})
+
+message(STATUS ${PROJECT_NAME}" - Qt includes : "  ${QT_LIBRARIES})
+
+target_link_libraries ( ${PROJECT_NAME}
+	cafProjectDataModel
+    cafPdmUiCore
+    cafPdmCore
+    cafPdmXml
+    cafUserInterface
+    ${QT_LIBRARIES}
+)
+
+# Copy Qt Dlls
+if (MSVC)
+    set (QTLIBLIST QtCore QtGui)
+    foreach (qtlib ${QTLIBLIST})
+        
+        # Debug
+        execute_process(COMMAND cmake -E copy_if_different ${QT_BINARY_DIR}/${qtlib}d4.dll ${CMAKE_CURRENT_BINARY_DIR}/Debug/${qtlib}d4.dll)
+        
+        # Release
+        execute_process(COMMAND cmake -E copy_if_different ${QT_BINARY_DIR}/${qtlib}4.dll ${CMAKE_CURRENT_BINARY_DIR}/Release/${qtlib}4.dll)
+    endforeach( qtlib )
+endif(MSVC)
+

Fwk/AppFwk/cafUserInterface/cafUserInterface_UnitTests/cafPdmUiTreeViewModelTest.cpp

@@ -0,0 +1,204 @@
+
+#include "gtest/gtest.h"
+
+#include "cafPdmChildArrayField.h"
+#include "cafPdmObject.h"
+#include "cafPdmUiTreeView.h"
+
+#include <QModelIndex>
+#include <QApplication>
+
+using namespace caf;
+
+
+
+class SimpleObj: public caf::PdmObject
+{
+    CAF_PDM_HEADER_INIT;
+public:
+    SimpleObj() : PdmObject()
+    {
+        CAF_PDM_InitObject("SimpleObj", "", "Tooltip SimpleObj", "WhatsThis SimpleObj");
+
+   }
+    ~SimpleObj() {}
+
+};
+CAF_PDM_SOURCE_INIT(SimpleObj, "SimpleObj");
+
+
+
+class DemoPdmObject: public caf::PdmObject
+{
+    CAF_PDM_HEADER_INIT;
+public:
+
+    DemoPdmObject() 
+    {   
+        CAF_PDM_InitObject("DemoPdmObject", "", "Tooltip DemoPdmObject", "WhatsThis DemoPdmObject");
+
+        CAF_PDM_InitFieldNoDefault(&m_simpleObjPtrField, "SimpleObjPtrField", "SimpleObjPtrField", "", "Tooltip", "WhatsThis");
+    }
+
+    ~DemoPdmObject() 
+    {
+        m_simpleObjPtrField.deleteAllChildObjects();
+    }
+
+    caf::PdmChildArrayField<caf::PdmObjectHandle*> m_simpleObjPtrField;
+};
+
+CAF_PDM_SOURCE_INIT(DemoPdmObject, "DemoPdmObject");
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+TEST(PdmUiTreeViewModelTest, DeleteOneItemAndVerifyTreeOrdering)
+{
+    SimpleObj* obj1 = new SimpleObj;
+    SimpleObj* obj2 = new SimpleObj;
+    SimpleObj* obj3 = new SimpleObj;
+    SimpleObj* obj4 = new SimpleObj;
+
+    DemoPdmObject* demoObj = new DemoPdmObject;
+    demoObj->m_simpleObjPtrField.push_back(obj1);
+    demoObj->m_simpleObjPtrField.push_back(obj2);
+    demoObj->m_simpleObjPtrField.push_back(obj3);
+    demoObj->m_simpleObjPtrField.push_back(obj4);
+
+    PdmUiTreeView treeView;
+    treeView.setPdmItem(demoObj);
+
+    QModelIndex mi;
+    mi = treeView.findModelIndex(obj1);
+    EXPECT_TRUE(mi.isValid());
+
+    demoObj->m_simpleObjPtrField.removeChildObject(obj1);
+    demoObj->m_simpleObjPtrField().uiCapability()->updateConnectedEditors();
+
+    mi = treeView.findModelIndex(obj1);
+    EXPECT_FALSE(mi.isValid());
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+TEST(PdmUiTreeViewModelTest, AddOneItemAndVerifyTreeOrdering)
+{
+    SimpleObj* obj1 = new SimpleObj;
+    SimpleObj* obj2 = new SimpleObj;
+    SimpleObj* obj3 = new SimpleObj;
+    SimpleObj* obj4 = new SimpleObj;
+
+    DemoPdmObject* demoObj = new DemoPdmObject;
+    demoObj->m_simpleObjPtrField.push_back(obj1);
+    demoObj->m_simpleObjPtrField.push_back(obj2);
+    demoObj->m_simpleObjPtrField.push_back(obj3);
+
+    PdmUiTreeView treeView;
+    treeView.setPdmItem(demoObj);
+
+    QModelIndex mi;
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_FALSE(mi.isValid());
+
+    demoObj->m_simpleObjPtrField.push_back(obj4);
+    demoObj->m_simpleObjPtrField().uiCapability()->updateConnectedEditors();
+
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_TRUE(mi.isValid());
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+TEST(PdmUiTreeViewModelTest, ChangeOrderingAndVerifyTreeOrdering)
+{
+    SimpleObj* obj1 = new SimpleObj;
+    SimpleObj* obj2 = new SimpleObj;
+    SimpleObj* obj3 = new SimpleObj;
+    SimpleObj* obj4 = new SimpleObj;
+
+    DemoPdmObject* demoObj = new DemoPdmObject;
+    demoObj->m_simpleObjPtrField.push_back(obj1);
+    demoObj->m_simpleObjPtrField.push_back(obj2);
+    demoObj->m_simpleObjPtrField.push_back(obj3);
+    demoObj->m_simpleObjPtrField.push_back(obj4);
+
+    PdmUiTreeView treeView;
+    treeView.setPdmItem(demoObj);
+
+    QModelIndex mi;
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_EQ(3, mi.row());
+
+    demoObj->m_simpleObjPtrField.clear();
+    demoObj->m_simpleObjPtrField.push_back(obj1);
+    demoObj->m_simpleObjPtrField.push_back(obj4);
+    demoObj->m_simpleObjPtrField.push_back(obj3);
+    demoObj->m_simpleObjPtrField.push_back(obj2);
+
+    demoObj->m_simpleObjPtrField().uiCapability()->updateConnectedEditors();
+
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_EQ(1, mi.row());
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+TEST(PdmUiTreeViewModelTest, ChangeDeepInTreeNotifyRootAndVerifyTreeOrdering)
+{
+    DemoPdmObject* root = new DemoPdmObject;
+
+    SimpleObj* rootObj1 = new SimpleObj;
+    root->m_simpleObjPtrField.push_back(rootObj1);
+
+    DemoPdmObject* demoObj = new DemoPdmObject;
+    root->m_simpleObjPtrField.push_back(demoObj);
+
+    SimpleObj* obj1 = new SimpleObj;
+    SimpleObj* obj2 = new SimpleObj;
+    SimpleObj* obj3 = new SimpleObj;
+    SimpleObj* obj4 = new SimpleObj;
+    demoObj->m_simpleObjPtrField.push_back(obj1);
+    demoObj->m_simpleObjPtrField.push_back(obj2);
+    demoObj->m_simpleObjPtrField.push_back(obj3);
+    demoObj->m_simpleObjPtrField.push_back(obj4);
+
+    PdmUiTreeView treeView;
+    treeView.setPdmItem(root);
+
+    QModelIndex mi;
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_EQ(3, mi.row());
+
+    demoObj->m_simpleObjPtrField.removeChildObject(obj4);
+
+    root->m_simpleObjPtrField().uiCapability()->updateConnectedEditors();
+
+    mi = treeView.findModelIndex(obj4);
+    EXPECT_FALSE(mi.isValid());
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+TEST(PdmUiTreeViewModelTest, DISABLED_PerformanceLargeNumberOfItems)
+{
+    //int objCount = 20000;
+    int objCount = 100000;
+
+    DemoPdmObject* demoObj = new DemoPdmObject;
+    for (int i = 0; i < objCount; i++)
+    {
+        demoObj->m_simpleObjPtrField.push_back(new SimpleObj);
+    }
+
+    PdmUiTreeView treeView;
+    treeView.setPdmItem(demoObj);
+    demoObj->m_simpleObjPtrField().uiCapability()->updateConnectedEditors();
+}

Fwk/AppFwk/cafUserInterface/cafUserInterface_UnitTests/cafUserInterface_UnitTests.cpp

@@ -0,0 +1,59 @@
+//##################################################################################################
+//
+//   Custom Visualization Core library
+//   Copyright (C) 2014 Ceetron Solutions AS
+//
+//   This library may be used under the terms of either the GNU General Public License or
+//   the GNU Lesser General Public License as follows:
+//
+//   GNU General Public License Usage
+//   This library is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This library is distributed in the hope that it will be useful, but WITHOUT ANY
+//   WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//   FITNESS FOR A PARTICULAR PURPOSE.
+//
+//   See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
+//   for more details.
+//
+//   GNU Lesser General Public License Usage
+//   This library is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Lesser General Public License as published by
+//   the Free Software Foundation; either version 2.1 of the License, or
+//   (at your option) any later version.
+//
+//   This library is distributed in the hope that it will be useful, but WITHOUT ANY
+//   WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//   FITNESS FOR A PARTICULAR PURPOSE.
+//
+//   See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
+//   for more details.
+//
+//##################################################################################################
+
+
+#include "gtest/gtest.h"
+#include <stdio.h>
+#include <iostream>
+#include <string>
+
+#include <QApplication>
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+int main(int argc, char **argv) 
+{
+    QApplication app(argc, argv);
+
+    testing::InitGoogleTest(&argc, argv);
+    int result = RUN_ALL_TESTS();
+
+    char text[5];
+    std::cin.getline(text, 5);
+
+    return result;
+}