Use ICore::dialogParent for message boxes without parent so far

Change-Id: I2ee35796b2c041e6ea2ae6bd677e10167451d1b8
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/plugins/android/androidmanager.cpp

@@ -39,6 +39,7 @@
 
 #include <coreplugin/documentmanager.h>
 #include <coreplugin/messagemanager.h>
+#include <coreplugin/icore.h>
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/session.h>
 #include <projectexplorer/target.h>
@@ -631,7 +632,7 @@ bool AndroidManager::createAndroidTemplatesIfNecessary(ProjectExplorer::Target *
     }
 
     if (forceUpdate)
-        QMessageBox::warning(0, tr("Warning"), tr("Android files have been updated automatically."));
+        QMessageBox::warning(Core::ICore::dialogParent(), tr("Warning"), tr("Android files have been updated automatically."));
 
     return true;
 }

src/plugins/clearcase/clearcaseplugin.cpp

@@ -1658,7 +1658,8 @@ bool ClearCasePlugin::vcsSetActivity(const QString &workingDir, const QString &t
     const ClearCaseResponse actResponse =
             runCleartool(workingDir, args, m_settings.timeOutMS(), ShowStdOutInLogWindow);
     if (actResponse.error) {
-        QMessageBox::warning(0, title, tr("Set current activity failed: %1").arg(actResponse.message), QMessageBox::Ok);
+        QMessageBox::warning(ICore::dialogParent(), title,
+                             tr("Set current activity failed: %1").arg(actResponse.message), QMessageBox::Ok);
         return false;
     }
     m_activity = activity;
@@ -1821,7 +1822,7 @@ bool ClearCasePlugin::vcsAdd(const QString &workingDir, const QString &fileName)
 bool ClearCasePlugin::vcsDelete(const QString &workingDir, const QString &fileName)
 {
     const QString title(tr("ClearCase Remove Element %1").arg(baseName(fileName)));
-    if (QMessageBox::warning(0, title, tr("This operation is irreversible. Are you sure?"),
+    if (QMessageBox::warning(ICore::dialogParent(), title, tr("This operation is irreversible. Are you sure?"),
                          QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)
         return true;
 

src/plugins/coreplugin/locator/executefilter.cpp

@@ -108,7 +108,7 @@ void ExecuteFilter::accept(LocatorFilterEntry selection) const
     if (m_process->state() != QProcess::NotRunning) {
         const QString info(tr("Previous command is still running ('%1').\nDo you want to kill it?")
                            .arg(p->headCommand()));
-        int r = QMessageBox::question(0, tr("Kill Previous Process?"), info,
+        int r = QMessageBox::question(ICore::dialogParent(), tr("Kill Previous Process?"), info,
                                       QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,
                                       QMessageBox::Yes);
         if (r == QMessageBox::Yes)

src/plugins/coreplugin/vcsmanager.cpp

@@ -382,7 +382,7 @@ bool VcsManager::promptToDelete(IVersionControl *vc, const QString &fileName)
     const QString msg = tr("Would you like to remove this file from the version control system (%1)?\n"
                            "Note: This might remove the local file.").arg(vc->displayName());
     const QMessageBox::StandardButton button =
-        QMessageBox::question(0, title, msg, QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
+        QMessageBox::question(ICore::dialogParent(), title, msg, QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
     if (button != QMessageBox::Yes)
         return true;
     return vc->vcsDelete(fileName);

src/plugins/cvs/cvsplugin.cpp

@@ -151,9 +151,9 @@ static inline QString debugCodec(const QTextCodec *c)
     return c ? QString::fromLatin1(c->name()) : QString::fromLatin1("Null codec");
 }
 
-static inline bool messageBoxQuestion(const QString &title, const QString &question, QWidget *parent = 0)
+static inline bool messageBoxQuestion(const QString &title, const QString &question)
 {
-    return QMessageBox::question(parent, title, question, QMessageBox::Yes|QMessageBox::No) == QMessageBox::Yes;
+    return QMessageBox::question(ICore::dialogParent(), title, question, QMessageBox::Yes|QMessageBox::No) == QMessageBox::Yes;
 }
 
 // ------------- CVSPlugin
@@ -579,7 +579,8 @@ void CvsPlugin::revertAll()
     if (revertResponse.result == CvsResponse::Ok)
         cvsVersionControl()->emitRepositoryChanged(state.topLevel());
     else
-        QMessageBox::warning(0, title, tr("Revert failed: %1").arg(revertResponse.message), QMessageBox::Ok);
+        QMessageBox::warning(ICore::dialogParent(), title,
+                             tr("Revert failed: %1").arg(revertResponse.message), QMessageBox::Ok);
 }
 
 void CvsPlugin::revertCurrentFile()

src/plugins/git/gerrit/gerritplugin.cpp

@@ -356,7 +356,7 @@ void GerritPlugin::openView()
 {
     if (m_dialog.isNull()) {
         while (!m_parameters->isValid()) {
-            QMessageBox::warning(0, tr("Error"),
+            QMessageBox::warning(ICore::dialogParent(), tr("Error"),
                     tr("Invalid Gerrit configuration. Host, user and ssh binary are mandatory."));
             const Id group = VcsBase::Constants::VCS_SETTINGS_CATEGORY;
             if (!ICore::showOptionsDialog(group, "Gerrit"))

src/plugins/git/mergetool.cpp

@@ -33,6 +33,7 @@
 #include "gitversioncontrol.h"
 
 #include <coreplugin/documentmanager.h>
+#include <coreplugin/icore.h>
 #include <vcsbase/vcsbaseoutputwindow.h>
 
 #include <QMessageBox>
@@ -89,7 +90,8 @@ bool MergeTool::start(const QString &workingDirectory, const QStringList &files)
     arguments << QLatin1String("mergetool") << QLatin1String("-y");
     if (!files.isEmpty()) {
         if (m_gitClient->gitVersion() < 0x010708) {
-            QMessageBox::warning(0, tr("Error"), tr("File input for the merge tool requires Git 1.7.8, or later."));
+            QMessageBox::warning(Core::ICore::dialogParent(), tr("Error"),
+                                 tr("File input for the merge tool requires Git 1.7.8, or later."));
             return false;
         }
         arguments << files;
@@ -244,7 +246,7 @@ void MergeTool::readData()
             m_remoteState = waitAndReadStatus(m_remoteInfo);
             chooseAction();
         } else if (m_merging && line.startsWith("Continue merging")) {
-            if (QMessageBox::question(0, tr("Continue Merging"),
+            if (QMessageBox::question(Core::ICore::dialogParent(), tr("Continue Merging"),
                                       tr("Continue merging other unresolved paths?"),
                                       QMessageBox::Yes | QMessageBox::No,
                                       QMessageBox::No) == QMessageBox::Yes) {

src/plugins/perforce/perforceplugin.cpp

@@ -462,7 +462,7 @@ void PerforcePlugin::revertCurrentFile()
 
     bool doNotRevert = false;
     if (!result.stdOut.isEmpty())
-        doNotRevert = (QMessageBox::warning(0, tr("p4 revert"),
+        doNotRevert = (QMessageBox::warning(Core::ICore::dialogParent(), tr("p4 revert"),
                                             tr("The file has been changed. Do you want to revert it?"),
                                             QMessageBox::Yes, QMessageBox::No) == QMessageBox::No);
     if (doNotRevert)
@@ -514,7 +514,7 @@ void PerforcePlugin::revertCurrentProject()
     QTC_ASSERT(state.hasProject(), return);
 
     const QString msg = tr("Do you want to revert all changes to the project \"%1\"?").arg(state.currentProjectName());
-    if (QMessageBox::warning(0, tr("p4 revert"), msg, QMessageBox::Yes, QMessageBox::No) == QMessageBox::No)
+    if (QMessageBox::warning(Core::ICore::dialogParent(), tr("p4 revert"), msg, QMessageBox::Yes, QMessageBox::No) == QMessageBox::No)
         return;
     revertProject(state.currentProjectTopLevel(), perforceRelativeProjectDirectory(state), false);
 }

src/plugins/projectexplorer/dependenciespanel.cpp

@@ -32,6 +32,7 @@
 #include "session.h"
 
 #include <coreplugin/fileiconprovider.h>
+#include <coreplugin/icore.h>
 #include <utils/detailswidget.h>
 
 #include <QDebug>
@@ -114,7 +115,7 @@ bool DependenciesModel::setData(const QModelIndex &index, const QVariant &value,
                 emit dataChanged(index, index);
                 return true;
             } else {
-                QMessageBox::warning(0, QCoreApplication::translate("DependenciesModel", "Unable to Add Dependency"),
+                QMessageBox::warning(Core::ICore::dialogParent(), QCoreApplication::translate("DependenciesModel", "Unable to Add Dependency"),
                                      QCoreApplication::translate("DependenciesModel", "This would create a circular dependency."));
             }
         } else if (c == Qt::Unchecked) {

src/plugins/projectexplorer/session.cpp

@@ -395,7 +395,7 @@ bool SessionManager::save()
 
     bool result = d->m_writer->save(data, Core::ICore::mainWindow());
     if (!result) {
-        QMessageBox::warning(0, tr("Error while saving session"),
+        QMessageBox::warning(ICore::dialogParent(), tr("Error while saving session"),
             tr("Could not save session to file %1").arg(d->m_writer->fileName().toUserOutput()));
     }
 
@@ -864,7 +864,7 @@ bool SessionManager::loadSession(const QString &session)
     PersistentSettingsReader reader;
     if (fileName.toFileInfo().exists()) {
         if (!reader.load(fileName)) {
-            QMessageBox::warning(0, tr("Error while restoring session"),
+            QMessageBox::warning(ICore::dialogParent(), tr("Error while restoring session"),
                                  tr("Could not restore session %1").arg(fileName.toUserOutput()));
             return false;
         }

src/plugins/projectexplorer/toolchainoptionspage.cpp

@@ -34,6 +34,7 @@
 #include "toolchainconfigwidget.h"
 #include "toolchainmanager.h"
 
+#include <coreplugin/icore.h>
 #include <extensionsystem/pluginmanager.h>
 
 #include <utils/detailswidget.h>
@@ -308,7 +309,7 @@ void ToolChainModel::apply()
     qDeleteAll(m_toAddList);
 
     if (removedTcs.count() == 1) {
-        QMessageBox::warning(0,
+        QMessageBox::warning(Core::ICore::dialogParent(),
                              tr("Duplicate Compilers Detected"),
                              tr("The following compiler was already configured:<br>"
                                 "&nbsp;%1<br>"
@@ -316,7 +317,7 @@ void ToolChainModel::apply()
                              .arg(removedTcs.at(0)));
 
     } else if (!removedTcs.isEmpty()) {
-        QMessageBox::warning(0,
+        QMessageBox::warning(Core::ICore::dialogParent(),
                              tr("Duplicate Compilers Detected"),
                              tr("The following compilers were already configured:<br>"
                                 "&nbsp;%1<br>"

src/plugins/qmakeprojectmanager/qmakeproject.cpp

@@ -42,6 +42,7 @@
 #include "wizards/html5app.h"
 
 #include <coreplugin/icontext.h>
+#include <coreplugin/icore.h>
 #include <coreplugin/progressmanager/progressmanager.h>
 #include <coreplugin/documentmanager.h>
 #include <cpptools/cppmodelmanagerinterface.h>
@@ -101,7 +102,7 @@ void updateBoilerPlateCodeFiles(const AbstractMobileApp *app, const QString &pro
                                "outdated or have been modified:<br><br>%2<br><br>Do you want "
                                "Qt Creator to update the files? Any changes will be lost.")
                 .arg(nativeProFile, fileNames.join(QLatin1String(", ")));
-        if (QMessageBox::question(0, title, message, QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
+        if (QMessageBox::question(Core::ICore::dialogParent(), title, message, QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
             QString error;
             if (!app->updateFiles(updates, error))
                 QMessageBox::critical(0, title, error);

src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp

@@ -30,6 +30,8 @@
 #include "modelnodeoperations.h"
 #include "modelnodecontextmenu_helper.h"
 
+#include <coreplugin/icore.h>
+
 #include <cmath>
 #include <QMessageBox>
 #include <QByteArray>
@@ -48,6 +50,11 @@ namespace QmlDesigner {
 
 const PropertyName auxDataString("anchors_");
 
+static void showError(const RewritingException &e)
+{
+    QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
+}
+
 static inline QList<QmlItemNode> siblingsForNode(const QmlItemNode &itemNode)
 {
     QList<QmlItemNode> siblingList;
@@ -184,7 +191,7 @@ void toFront(const SelectionContext &selectionState)
             node.setVariantProperty("z", maximumZ);
         }
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -202,7 +209,7 @@ void toBack(const SelectionContext &selectionState)
         }
 
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -222,7 +229,7 @@ void raise(const SelectionContext &selectionState)
             }
         }
     } catch (RewritingException &e) { //better save then sorry
-         QMessageBox::warning(0, "Error", e.description());
+         showError(e);
     }
 }
 
@@ -243,7 +250,7 @@ void lower(const SelectionContext &selectionState)
             }
         }
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -267,7 +274,7 @@ void setVisible(const SelectionContext &selectionState)
     try {
         selectionState.selectedModelNodes().first().variantProperty("visible").setValue(selectionState.toggled());
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -280,7 +287,7 @@ void setFillWidth(const SelectionContext &selectionState)
     try {
         selectionState.firstSelectedModelNode().variantProperty("Layout.fillWidth").setValue(selectionState.toggled());
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -293,7 +300,7 @@ void setFillHeight(const SelectionContext &selectionState)
     try {
         selectionState.firstSelectedModelNode().variantProperty("Layout.fillHeight").setValue(selectionState.toggled());
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -309,7 +316,7 @@ void resetSize(const SelectionContext &selectionState)
             node.removeProperty("height");
         }
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -325,7 +332,7 @@ void resetPosition(const SelectionContext &selectionState)
             node.removeProperty("y");
         }
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 
@@ -390,7 +397,7 @@ void anchorsFill(const SelectionContext &selectionState)
 
         transaction.commit();
     } catch (RewritingException &e) { //better save then sorry
-        QMessageBox::warning(0, "Error", e.description());
+        showError(e);
     }
 }
 

src/plugins/qmldesigner/components/formeditor/dragtool.cpp

@@ -35,6 +35,8 @@
 #include <metainfo.h>
 #include <rewritingexception.h>
 
+#include <coreplugin/icore.h>
+
 #include <QGraphicsSceneMouseEvent>
 #include <QDebug>
 #include <QMimeData>
@@ -275,7 +277,7 @@ void DragTool::commitTransaction()
     try {
         m_rewriterTransaction.commit();
     } catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 

src/plugins/qmldesigner/components/importmanager/importmanagerview.cpp

@@ -32,6 +32,8 @@
 
 #include <rewritingexception.h>
 
+#include <coreplugin/icore.h>
+
 #include <QMessageBox>
 
 namespace QmlDesigner {
@@ -252,7 +254,7 @@ void ImportManagerView::removeImport(const Import &import)
             model()->changeImports(QList<Import>(), QList<Import>() << import);
     }
     catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 
@@ -263,7 +265,7 @@ void ImportManagerView::addImport(const Import &import)
             model()->changeImports(QList<Import>() << import, QList<Import>());
     }
     catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 

src/plugins/qmldesigner/components/integration/designdocument.cpp

@@ -40,6 +40,7 @@
 #include <viewmanager.h>
 #include <nodeinstanceview.h>
 
+#include <coreplugin/icore.h>
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/project.h>
 #include <projectexplorer/target.h>
@@ -365,7 +366,7 @@ void DesignDocument::deleteSelected()
         }
 
     } catch (RewritingException &e) {
-        QMessageBox::warning(0, tr("Error"), e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), tr("Error"), e.description());
     }
 }
 

src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp

@@ -41,6 +41,8 @@
 #include <modelnodecontextmenu.h>
 #include <qmlitemnode.h>
 
+#include <coreplugin/icore.h>
+
 #include <QMimeData>
 #include <QMessageBox>
 #include <QApplication>
@@ -326,7 +328,7 @@ void NavigatorTreeModel::handleChangedItem(QStandardItem *item)
                  try {
                      node.setId(item->text());
                  } catch (InvalidIdException &e) { //better save then sorry
-                     QMessageBox::warning(0, tr("Invalid Id"), e.description());
+                     QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"), e.description());
                  }
              } else { //there is already an id, so we refactor
                  if (node.view()->rewriterView())
@@ -335,9 +337,9 @@ void NavigatorTreeModel::handleChangedItem(QStandardItem *item)
         } else {
 
              if (!node.isValidId(item->text()))
-                 QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 is an invalid id.").arg(item->text()));
+                 QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"),  tr("%1 is an invalid id.").arg(item->text()));
              else
-                 QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 already exists.").arg(item->text()));
+                 QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"),  tr("%1 already exists.").arg(item->text()));
              bool blockSingals = blockItemChangedSignal(true);
              item->setText(node.id());
              blockItemChangedSignal(blockSingals);
@@ -535,7 +537,11 @@ void NavigatorTreeModel::moveNodesInteractive(NodeAbstractProperty parentPropert
                                 continue;
                             if (propertyNode.isValid()) {
                                 QApplication::setOverrideCursor(Qt::ArrowCursor);
-                                if (QMessageBox::warning(0, tr("Warning"), tr("Reparenting the component %1 here will cause the component %2 to be deleted. Do you want to proceed?").arg(node.id(), propertyNode.id()), QMessageBox::Ok | QMessageBox::Cancel) == QMessageBox::Cancel) {
+                                if (QMessageBox::warning(Core::ICore::dialogParent(), tr("Warning"),
+                                                         tr("Reparenting the component %1 here will cause the "
+                                                            "component %2 to be deleted. Do you want to proceed?")
+                                                            .arg(node.id(), propertyNode.id()),
+                                                         QMessageBox::Ok | QMessageBox::Cancel) == QMessageBox::Cancel) {
                                     QApplication::restoreOverrideCursor();
                                     continue;
                                 }
@@ -574,7 +580,7 @@ void NavigatorTreeModel::moveNodesInteractive(NodeAbstractProperty parentPropert
             }
         }
     }  catch (RewritingException &e) { //better safe than sorry! There always might be cases where we fail
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 

src/plugins/qmldesigner/components/propertyeditor/propertyeditorview.cpp

@@ -45,6 +45,7 @@
 #include <nodeabstractproperty.h>
 #include <rewriterview.h>
 
+#include <coreplugin/icore.h>
 #include <utils/fileutils.h>
 
 #include <QCoreApplication>
@@ -155,7 +156,7 @@ void PropertyEditorView::changeValue(const QString &name)
                     m_locked = true;
                     value->setValue(m_selectedNode.id());
                     m_locked = false;
-                    QMessageBox::warning(0, tr("Invalid Id"), e.description());
+                    QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"), e.description());
                 }
             } else { //there is already an id, so we refactor
                 if (rewriterView())
@@ -166,9 +167,9 @@ void PropertyEditorView::changeValue(const QString &name)
             value->setValue(m_selectedNode.id());
             m_locked = false;
             if (!m_selectedNode.isValidId(newId))
-                QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 is an invalid id.").arg(newId));
+                QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"),  tr("%1 is an invalid id.").arg(newId));
             else
-                QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 already exists.").arg(newId));
+                QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid Id"),  tr("%1 already exists.").arg(newId));
         }
         return;
     }
@@ -226,7 +227,7 @@ void PropertyEditorView::changeValue(const QString &name)
             }
         }
         catch (RewritingException &e) {
-            QMessageBox::warning(0, "Error", e.description());
+            QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
         }
 }
 
@@ -302,7 +303,7 @@ void PropertyEditorView::changeExpression(const QString &propertyName)
     }
 
     catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 

src/plugins/qmldesigner/components/stateseditor/stateseditormodel.cpp

@@ -37,6 +37,8 @@
 #include <modelnode.h>
 #include <variantproperty.h>
 
+#include <coreplugin/icore.h>
+
 enum {
     debug = false
 };
@@ -169,7 +171,7 @@ void StatesEditorModel::renameState(int nodeId, const QString &newName)
         return;
 
     if (newName.isEmpty() ||! m_statesEditorView->validStateName(newName)) {
-        QMessageBox::warning(0, tr("Invalid state name"),
+        QMessageBox::warning(Core::ICore::dialogParent(), tr("Invalid state name"),
                              newName.isEmpty() ?
                                  tr("The empty string as a name is reserved for the base state.") :
                                  tr("Name already used in another state"));

src/plugins/qmldesigner/components/stateseditor/stateseditorview.cpp

@@ -43,6 +43,9 @@
 
 #include <qmlitemnode.h>
 
+#include <coreplugin/icore.h>
+
+
 namespace QmlDesigner {
 
 /**
@@ -158,7 +161,7 @@ void StatesEditorView::removeState(int nodeId)
             stateNode.destroy();
         }
     }  catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 
@@ -209,7 +212,7 @@ void StatesEditorView::addState()
         ModelNode newState = rootStateGroup().addState(newStateName);
         setCurrentState(newState);
     }  catch (RewritingException &e) {
-        QMessageBox::warning(0, "Error", e.description());
+        QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
     }
 }
 
@@ -304,7 +307,7 @@ void StatesEditorView::renameState(int nodeId, const QString &newName)
                 setCurrentState(oldState);
             }
         }  catch (RewritingException &e) {
-            QMessageBox::warning(0, "Error", e.description());
+            QMessageBox::warning(Core::ICore::dialogParent(), "Error", e.description());
         }
     }
 }