enable selection in the dialog item list

now the user can use the Ctrl and/or Shift key to select multiple items to be deleted

src/Mod/PartDesign/Gui/TaskChamferParameters.cpp

@@ -25,6 +25,7 @@
 
 #ifndef _PreComp_
 # include <QAction>
+# include <QListWidget>
 #endif
 
 #include "ui_TaskChamferParameters.h"
@@ -109,6 +110,9 @@ TaskChamferParameters::TaskChamferParameters(ViewProviderDressUp *DressUpView, Q
 
 void TaskChamferParameters::onSelectionChanged(const Gui::SelectionChanges& msg)
 {
+    // executed when the user selected something in the CAD object
+    // adds/deletes the selection accordingly
+
     if (selectionMode == none)
         return;
 
@@ -155,21 +159,39 @@ void TaskChamferParameters::clearButtons(const selectionModes notThis)
 
 void TaskChamferParameters::onRefDeleted(void)
 {
+    // get vector of selected objects of active document to assure we have a valid selection
+    std::vector<Gui::SelectionObject> selection = Gui::Selection().getSelectionEx();
+    if (selection.size() == 0) {
+        QMessageBox::warning(this, tr("Selection error"), tr("Nothing selected!"));
+        return;
+    }
     // assure we we are not in selection mode
     exitSelectionMode();
     clearButtons(none);
-    // delete any selections since the reference might be highlighted
+    // delete any selections since the reference(s) might be highlighted
     Gui::Selection().clearSelection();
     DressUpView->highlightReferences(false);
 
-    PartDesign::Chamfer* pcChamfer = static_cast<PartDesign::Chamfer*>(DressUpView->getObject());
-    App::DocumentObject* base = pcChamfer->Base.getValue();
-    std::vector<std::string> refs = pcChamfer->Base.getSubValues();
-    refs.erase(refs.begin() + ui->listWidgetReferences->currentRow());
-    setupTransaction();
-    pcChamfer->Base.setValue(base, refs);
-    ui->listWidgetReferences->model()->removeRow(ui->listWidgetReferences->currentRow());
-    pcChamfer->getDocument()->recomputeFeature(pcChamfer);
+    // get the list of items to be deleted
+    QList<QListWidgetItem*> selectedList = ui->listWidgetReferences->selectedItems();
+
+    // delete the selection backwards to assure the list index keeps valid for the deletion
+    for (int i = selectedList.count() - 1; i > -1; i--) {
+        QListWidgetItem* item = selectedList.at(i);
+        // get the fillet object
+        PartDesign::Chamfer* pcChamfer = static_cast<PartDesign::Chamfer*>(DressUpView->getObject());
+        App::DocumentObject* base = pcChamfer->Base.getValue();
+        // get all fillet references
+        std::vector<std::string> refs = pcChamfer->Base.getSubValues();
+        // the ref index is the same as the listWidgetReferences index
+        // so we can erase using the row number of the element to be deleted
+        int rowNumber = ui->listWidgetReferences->row(selectedList.at(i));
+        refs.erase(refs.begin() + rowNumber);
+        setupTransaction();
+        pcChamfer->Base.setValue(base, refs);
+        ui->listWidgetReferences->model()->removeRow(rowNumber);
+        pcChamfer->getDocument()->recomputeFeature(pcChamfer);
+    }
 
     // if there is only one item left, it cannot be deleted
     if (ui->listWidgetReferences->count() == 1) {

src/Mod/PartDesign/Gui/TaskChamferParameters.ui

@@ -52,6 +52,9 @@ click again to end selection</string>
       <string>- select an item to highlight it
 - double-click on an item to see the chamfers</string>
      </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::ExtendedSelection</enum>
+     </property>
     </widget>
    </item>
    <item>

src/Mod/PartDesign/Gui/TaskDraftParameters.cpp

@@ -27,6 +27,7 @@
 #ifndef _PreComp_
 # include <QMessageBox>
 # include <QAction>
+# include <QListWidget>
 #endif
 
 #include "ui_TaskDraftParameters.h"
@@ -131,6 +132,9 @@ TaskDraftParameters::TaskDraftParameters(ViewProviderDressUp *DressUpView, QWidg
 
 void TaskDraftParameters::onSelectionChanged(const Gui::SelectionChanges& msg)
 {
+    // executed when the user selected something in the CAD object
+    // adds/deletes the selection accordingly
+
     if (selectionMode == none)
         return;
 
@@ -229,21 +233,40 @@ void TaskDraftParameters::onButtonLine(bool checked)
 
 void TaskDraftParameters::onRefDeleted(void)
 {
+    // get vector of selected objects of active document to assure we have a valid selection
+    std::vector<Gui::SelectionObject> selection = Gui::Selection().getSelectionEx();
+    if (selection.size() == 0) {
+        QMessageBox::warning(this, tr("Selection error"), tr("Nothing selected!"));
+        return;
+    }
     // assure we we are not in selection mode
     exitSelectionMode();
     clearButtons(none);
-    // delete any selections since the reference might be highlighted
+    // delete any selections since the reference(s) might be highlighted
     Gui::Selection().clearSelection();
     DressUpView->highlightReferences(false);
 
-    PartDesign::Draft* pcDraft = static_cast<PartDesign::Draft*>(DressUpView->getObject());
-    App::DocumentObject* base = pcDraft->Base.getValue();
-    std::vector<std::string> faces = pcDraft->Base.getSubValues();
-    faces.erase(faces.begin() + ui->listWidgetReferences->currentRow());
-    setupTransaction();
-    pcDraft->Base.setValue(base, faces);
-    ui->listWidgetReferences->model()->removeRow(ui->listWidgetReferences->currentRow());
-    pcDraft->getDocument()->recomputeFeature(pcDraft);
+    // get the list of items to be deleted
+    QList<QListWidgetItem*> selectedList = ui->listWidgetReferences->selectedItems();
+
+    // delete the selection backwards to assure the list index keeps valid for the deletion
+    for (int i = selectedList.count() - 1; i > -1; i--) {
+        //QMessageBox::warning(this, tr("i"), QString::number(i));
+        QListWidgetItem* item = selectedList.at(i);
+        // get the fillet object
+        PartDesign::Draft* pcDraft = static_cast<PartDesign::Draft*>(DressUpView->getObject());
+        App::DocumentObject* base = pcDraft->Base.getValue();
+        // get all fillet references
+        std::vector<std::string> refs = pcDraft->Base.getSubValues();
+        // the ref index is the same as the listWidgetReferences index
+        // so we can erase using the row number of the element to be deleted
+        int rowNumber = ui->listWidgetReferences->row(selectedList.at(i));
+        refs.erase(refs.begin() + rowNumber);
+        setupTransaction();
+        pcDraft->Base.setValue(base, refs);
+        ui->listWidgetReferences->model()->removeRow(rowNumber);
+        pcDraft->getDocument()->recomputeFeature(pcDraft);
+    }
 
     // if there is only one item left, it cannot be deleted
     if (ui->listWidgetReferences->count() == 1) {

src/Mod/PartDesign/Gui/TaskDraftParameters.ui

@@ -52,6 +52,9 @@ click again to end selection</string>
       <string>- select an item to highlight it
 - double-click on an item to see the drafts</string>
      </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::ExtendedSelection</enum>
+     </property>
     </widget>
    </item>
    <item>

src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp

@@ -197,7 +197,7 @@ void TaskDressUpParameters::setSelection(QListWidgetItem* current) {
         hideObject();
         // highlight all objects in the list
         DressUpView->highlightReferences(true);
-        // clear existing selections
+        // clear existing selection because only the current item is highlighted, not all selected ones to keep the overview
         Gui::Selection().clearSelection();
         // highligh the selected item
         Gui::Selection().addSelection(docName.c_str(), objName.c_str(), subName.c_str(), 0, 0, 0);

src/Mod/PartDesign/Gui/TaskFilletParameters.cpp

@@ -26,6 +26,7 @@
 #ifndef _PreComp_
 # include <QAction>
 # include <QKeyEvent>
+# include <QListWidget>
 #endif
 
 #include "ui_TaskFilletParameters.h"
@@ -110,6 +111,9 @@ TaskFilletParameters::TaskFilletParameters(ViewProviderDressUp *DressUpView, QWi
 
 void TaskFilletParameters::onSelectionChanged(const Gui::SelectionChanges& msg)
 {
+    // executed when the user selected something in the CAD object
+    // adds/deletes the selection accordingly
+
     if (selectionMode == none)
         return;
 
@@ -155,21 +159,40 @@ void TaskFilletParameters::clearButtons(const selectionModes notThis)
 
 void TaskFilletParameters::onRefDeleted(void)
 {
+    // get vector of selected objects of active document to assure we have a valid selection
+    std::vector<Gui::SelectionObject> selection = Gui::Selection().getSelectionEx();
+    if (selection.size() == 0) {
+        QMessageBox::warning(this, tr("Selection error"), tr("Nothing selected!"));
+        return;
+    }
     // assure we we are not in selection mode
     exitSelectionMode();
     clearButtons(none);
-    // delete any selections since the reference might be highlighted
+    // delete any selections since the reference(s) might be highlighted
     Gui::Selection().clearSelection();
     DressUpView->highlightReferences(false);
 
-    PartDesign::Fillet* pcFillet = static_cast<PartDesign::Fillet*>(DressUpView->getObject());
-    App::DocumentObject* base = pcFillet->Base.getValue();
-    std::vector<std::string> refs = pcFillet->Base.getSubValues();
-    refs.erase(refs.begin() + ui->listWidgetReferences->currentRow());
-    setupTransaction();
-    pcFillet->Base.setValue(base, refs);
-    ui->listWidgetReferences->model()->removeRow(ui->listWidgetReferences->currentRow());
-    pcFillet->getDocument()->recomputeFeature(pcFillet);
+    // get the list of items to be deleted
+    QList<QListWidgetItem*> selectedList = ui->listWidgetReferences->selectedItems();
+
+    // delete the selection backwards to assure the list index keeps valid for the deletion
+    for (int i = selectedList.count()-1; i > -1; i--) {
+        //QMessageBox::warning(this, tr("i"), QString::number(i));
+        QListWidgetItem* item = selectedList.at(i);
+        // get the fillet object
+        PartDesign::Fillet* pcFillet = static_cast<PartDesign::Fillet*>(DressUpView->getObject());
+        App::DocumentObject* base = pcFillet->Base.getValue();
+        // get all fillet references
+        std::vector<std::string> refs = pcFillet->Base.getSubValues();
+        // the ref index is the same as the listWidgetReferences index
+        // so we can erase using the row number of the element to be deleted
+        int rowNumber = ui->listWidgetReferences->row(selectedList.at(i));
+        refs.erase(refs.begin() + rowNumber);
+        setupTransaction();
+        pcFillet->Base.setValue(base, refs);
+        ui->listWidgetReferences->model()->removeRow(rowNumber);
+        pcFillet->getDocument()->recomputeFeature(pcFillet);
+    }
 
     // if there is only one item left, it cannot be deleted
     if (ui->listWidgetReferences->count() == 1) {

src/Mod/PartDesign/Gui/TaskFilletParameters.ui

@@ -52,6 +52,9 @@ click again to end selection</string>
       <string>- select an item to highlight it
 - double-click on an item to see the fillets</string>
      </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::ExtendedSelection</enum>
+     </property>
     </widget>
    </item>
    <item>

src/Mod/PartDesign/Gui/TaskThicknessParameters.cpp

@@ -25,6 +25,7 @@
 
 #ifndef _PreComp_
 # include <QAction>
+# include <QListWidget>
 #endif
 
 #include "ui_TaskThicknessParameters.h"
@@ -131,6 +132,9 @@ TaskThicknessParameters::TaskThicknessParameters(ViewProviderDressUp *DressUpVie
 
 void TaskThicknessParameters::onSelectionChanged(const Gui::SelectionChanges& msg)
 {
+    // executed when the user selected something in the CAD object
+    // adds/deletes the selection accordingly
+
     if (selectionMode == none)
         return;
 
@@ -177,23 +181,39 @@ void TaskThicknessParameters::clearButtons(const selectionModes notThis)
 
 void TaskThicknessParameters::onRefDeleted(void)
 {
+    // get vector of selected objects of active document to assure we have a valid selection
+    std::vector<Gui::SelectionObject> selection = Gui::Selection().getSelectionEx();
+    if (selection.size() == 0) {
+        QMessageBox::warning(this, tr("Selection error"), tr("Nothing selected!"));
+        return;
+    }
     // assure we we are not in selection mode
     exitSelectionMode();
     clearButtons(none);
-    // delete any selections since the reference might be highlighted
+    // delete any selections since the reference(s) might be highlighted
     Gui::Selection().clearSelection();
     DressUpView->highlightReferences(false);
 
-    PartDesign::Thickness* pcThickness = static_cast<PartDesign::Thickness*>(DressUpView->getObject());
-    App::DocumentObject* base = pcThickness->Base.getValue();
-    std::vector<std::string> faces = pcThickness->Base.getSubValues();
-    faces.erase(faces.begin() + ui->listWidgetReferences->currentRow());
-    setupTransaction();
-    pcThickness->Base.setValue(base, faces);
-    ui->listWidgetReferences->model()->removeRow(ui->listWidgetReferences->currentRow());
-    pcThickness->getDocument()->recomputeFeature(pcThickness);
-    clearButtons(none);
-    exitSelectionMode();
+    // get the list of items to be deleted
+    QList<QListWidgetItem*> selectedList = ui->listWidgetReferences->selectedItems();
+
+    // delete the selection backwards to assure the list index keeps valid for the deletion
+    for (int i = selectedList.count() - 1; i > -1; i--) {
+        QListWidgetItem* item = selectedList.at(i);
+        // get the fillet object
+        PartDesign::Thickness* pcThickness = static_cast<PartDesign::Thickness*>(DressUpView->getObject());
+        App::DocumentObject* base = pcThickness->Base.getValue();
+        // get all fillet references
+        std::vector<std::string> refs = pcThickness->Base.getSubValues();
+        // the ref index is the same as the listWidgetReferences index
+        // so we can erase using the row number of the element to be deleted
+        int rowNumber = ui->listWidgetReferences->row(selectedList.at(i));
+        refs.erase(refs.begin() + rowNumber);
+        setupTransaction();
+        pcThickness->Base.setValue(base, refs);
+        ui->listWidgetReferences->model()->removeRow(rowNumber);
+        pcThickness->getDocument()->recomputeFeature(pcThickness);
+    }
 
     // if there is only one item left, it cannot be deleted
     if (ui->listWidgetReferences->count() == 1) {

src/Mod/PartDesign/Gui/TaskThicknessParameters.ui

@@ -52,6 +52,9 @@ click again to end selection</string>
       <string>- select an item to highlight it
 - double-click on an item to see the features</string>
      </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::MultiSelection</enum>
+     </property>
     </widget>
    </item>
    <item>