Replace virtual isModified method with a getter/setter/notifier

We have lacked the setter and dedicated notifier before.

Change-Id: I58845a48259d260c5cc90ae94b173c79cddcfef9
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

28 files changed, 113 insertions, 136 deletions

diff --git a/src/libs/modelinglib/qmt/document_controller/documentcontroller.cpp b/src/libs/modelinglib/qmt/document_controller/documentcontroller.cpp
index f6271ff14d..8af722de62 100644
--- a/src/libs/modelinglib/qmt/document_controller/documentcontroller.cpp
+++ b/src/libs/modelinglib/qmt/document_controller/documentcontroller.cpp
@@ -76,17 +76,20 @@ DocumentController::DocumentController(QObject *parent) :
 {
     // project controller
     connect(m_projectController, &ProjectController::changed, this, &DocumentController::changed);
+    connect(m_projectController, &ProjectController::modificationChanged, this, &DocumentController::modificationChanged);
 
     // model controller
     m_modelController->setUndoController(m_undoController);
-    connect(m_modelController, &ModelController::modified,
-            m_projectController, &ProjectController::setModified);
+    connect(m_modelController, &ModelController::modified, [this](){
+        m_projectController->setModified(true);
+    });
 
     // diagram controller
     m_diagramController->setModelController(m_modelController);
     m_diagramController->setUndoController(m_undoController);
-    connect(m_diagramController, &DiagramController::modified,
-            m_projectController, &ProjectController::setModified);
+    connect(m_diagramController, &DiagramController::modified, [this](){
+        m_projectController->setModified(true);
+    });
 
     // diagram scene controller
     m_diagramSceneController->setModelController(m_modelController);
diff --git a/src/libs/modelinglib/qmt/document_controller/documentcontroller.h b/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
index d9a253773f..b9eb3a5371 100644
--- a/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
+++ b/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
@@ -61,6 +61,7 @@ public:
 
 signals:
     void changed();
+    void modificationChanged(bool modified);
     void modelClipboardChanged(bool isEmpty);
     void diagramClipboardChanged(bool isEmpty);
 
diff --git a/src/libs/modelinglib/qmt/project_controller/projectcontroller.cpp b/src/libs/modelinglib/qmt/project_controller/projectcontroller.cpp
index 9698a2f601..384bb52281 100644
--- a/src/libs/modelinglib/qmt/project_controller/projectcontroller.cpp
+++ b/src/libs/modelinglib/qmt/project_controller/projectcontroller.cpp
@@ -43,8 +43,7 @@ ProjectIsModifiedException::ProjectIsModifiedException()
 }
 
 ProjectController::ProjectController(QObject *parent)
-    : QObject(parent),
-      m_isModified(false)
+    : QObject(parent)
 {
 }
 
@@ -59,7 +58,7 @@ void ProjectController::newProject(const QString &fileName)
     rootPackage->setName(tr("Model"));
     m_project->setRootPackage(rootPackage);
     m_project->setFileName(fileName);
-    m_isModified = false;
+    setModified(false);
     emit fileNameChanged(m_project->fileName());
     emit changed();
 }
@@ -68,17 +67,18 @@ void ProjectController::setFileName(const QString &fileName)
 {
     if (fileName != m_project->fileName()) {
         m_project->setFileName(fileName);
-        setModified();
+        setModified(true);
         emit fileNameChanged(m_project->fileName());
     }
 }
 
-void ProjectController::setModified()
+void ProjectController::setModified(bool modified)
 {
-    if (!m_isModified) {
-        m_isModified = true;
-        emit changed();
-    }
+    if (m_isModified == modified)
+        return;
+
+    m_isModified = modified;
+    emit modificationChanged(modified);
 }
 
 void ProjectController::load()
@@ -89,7 +89,7 @@ void ProjectController::load()
         throw NoFileNameException();
     ProjectSerializer serializer;
     serializer.load(m_project->fileName(), m_project.data());
-    m_isModified = false;
+    setModified(false);
     emit changed();
 }
 
@@ -99,7 +99,7 @@ void ProjectController::save()
         throw NoFileNameException();
     ProjectSerializer serializer;
     serializer.save(m_project->fileName(), m_project.data());
-    m_isModified = false;
+    setModified(false);
     emit changed();
 }
 
diff --git a/src/libs/modelinglib/qmt/project_controller/projectcontroller.h b/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
index 73daf2a2ac..a4eb47f9a6 100644
--- a/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
+++ b/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
@@ -58,6 +58,7 @@ public:
 signals:
     void changed();
     void fileNameChanged(const QString &fileName);
+    void modificationChanged(bool modified);
 
 public:
     Project *project() const { return m_project.data(); }
@@ -65,7 +66,7 @@ public:
 
     void newProject(const QString &fileName);
     void setFileName(const QString &fileName);
-    void setModified();
+    void setModified(bool modified);
 
     void load();
     void save();
@@ -73,7 +74,7 @@ public:
 
 private:
     QScopedPointer<Project> m_project;
-    bool m_isModified;
+    bool m_isModified = false;
 };
 
 } // namespace qmt
diff --git a/src/plugins/android/androidmanifestdocument.cpp b/src/plugins/android/androidmanifestdocument.cpp
index e3473a891b..01b1e3d810 100644
--- a/src/plugins/android/androidmanifestdocument.cpp
+++ b/src/plugins/android/androidmanifestdocument.cpp
@@ -43,8 +43,12 @@ AndroidManifestDocument::AndroidManifestDocument(AndroidManifestEditorWidget *ed
     setId(Constants::ANDROID_MANIFEST_EDITOR_ID);
     setMimeType(QLatin1String(Constants::ANDROID_MANIFEST_MIME_TYPE));
     setSuspendAllowed(false);
-    connect(editorWidget, &AndroidManifestEditorWidget::guiChanged,
-            this, &Core::IDocument::changed);
+    connect(editorWidget, &AndroidManifestEditorWidget::modificationChanged,
+            this, &Core::IDocument::setModified);
+    connect(this, &Core::IDocument::modificationChanged,
+            editorWidget, &AndroidManifestEditorWidget::setModified);
+
+    setModified(editorWidget->isModified());
 }
 
 bool AndroidManifestDocument::save(QString *errorString, const QString &fileName, bool autoSave)
@@ -55,11 +59,6 @@ bool AndroidManifestDocument::save(QString *errorString, const QString &fileName
     return result;
 }
 
-bool AndroidManifestDocument::isModified() const
-{
-    return TextDocument::isModified() ||  m_editorWidget->isModified();
-}
-
 bool AndroidManifestDocument::isSaveAsAllowed() const
 {
     return false;
diff --git a/src/plugins/android/androidmanifestdocument.h b/src/plugins/android/androidmanifestdocument.h
index 169047f051..28b8bc8306 100644
--- a/src/plugins/android/androidmanifestdocument.h
+++ b/src/plugins/android/androidmanifestdocument.h
@@ -39,7 +39,6 @@ public:
     bool save(QString *errorString, const QString &fileName = QString(),
               bool autoSave = false) override;
 
-    bool isModified() const override;
     bool isSaveAsAllowed() const override;
 
 private:
diff --git a/src/plugins/android/androidmanifesteditorwidget.cpp b/src/plugins/android/androidmanifesteditorwidget.cpp
index a2d1d8beed..6c8f767071 100644
--- a/src/plugins/android/androidmanifesteditorwidget.cpp
+++ b/src/plugins/android/androidmanifesteditorwidget.cpp
@@ -101,7 +101,7 @@ Project *androidProject(const Utils::FileName &fileName)
 
 AndroidManifestEditorWidget::AndroidManifestEditorWidget()
     : QStackedWidget(),
-      m_dirty(false),
+      m_modified(false),
       m_stayClean(false)
 {
     m_textEditorWidget = new AndroidManifestTextEditorWidget(this);
@@ -138,7 +138,7 @@ void AndroidManifestEditorWidget::initializePage()
     QGroupBox *packageGroupBox = new QGroupBox(mainWidget);
     topLayout->addWidget(packageGroupBox);
 
-    auto setDirtyFunc = [this] { setDirty(); };
+    auto setDirtyFunc = [this] { setModified(); };
     packageGroupBox->setTitle(tr("Package"));
     {
         QFormLayout *formLayout = new QFormLayout();
@@ -206,7 +206,7 @@ void AndroidManifestEditorWidget::initializePage()
         connect(m_packageNameLineEdit, &QLineEdit::textEdited,
                 this, &AndroidManifestEditorWidget::setPackageName);
         connect(m_versionCode, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged),
-                this, &AndroidManifestEditorWidget::setDirty);
+                this, &AndroidManifestEditorWidget::setModified);
         connect(m_versionNameLinedit, &QLineEdit::textEdited,
                 this, setDirtyFunc);
         connect(m_androidMinSdkVersion,
@@ -524,17 +524,17 @@ void AndroidManifestEditorWidget::updateAfterFileLoad()
     setActivePage(Source);
 }
 
-void AndroidManifestEditorWidget::setDirty(bool dirty)
+void AndroidManifestEditorWidget::setModified(bool modified)
 {
-    if (m_stayClean || dirty == m_dirty)
+    if (m_stayClean || modified == m_modified)
         return;
-    m_dirty = dirty;
-    emit guiChanged();
+    m_modified = modified;
+    emit modificationChanged(modified);
 }
 
 bool AndroidManifestEditorWidget::isModified() const
 {
-    return m_dirty
+    return m_modified
             || !m_hIconPath.isEmpty()
             || !m_mIconPath.isEmpty()
             || !m_lIconPath.isEmpty();
@@ -819,7 +819,7 @@ void AndroidManifestEditorWidget::syncToWidgets(const QDomDocument &doc)
     updateAddRemovePermissionButtons();
 
     m_stayClean = false;
-    m_dirty = false;
+    m_modified = false;
 }
 
 int extractVersion(const QString &string)
@@ -862,7 +862,7 @@ void AndroidManifestEditorWidget::syncToEditor()
     m_textEditorWidget->setPlainText(result);
     m_textEditorWidget->document()->setModified(true);
 
-    m_dirty = false;
+    m_modified = false;
 }
 
 namespace {
@@ -1253,7 +1253,7 @@ void AndroidManifestEditorWidget::setLDPIIcon()
         return;
     m_lIconPath = file;
     m_lIconButton->setIcon(QIcon(file));
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::setMDPIIcon()
@@ -1263,7 +1263,7 @@ void AndroidManifestEditorWidget::setMDPIIcon()
         return;
     m_mIconPath = file;
     m_mIconButton->setIcon(QIcon(file));
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::setHDPIIcon()
@@ -1273,12 +1273,12 @@ void AndroidManifestEditorWidget::setHDPIIcon()
         return;
     m_hIconPath = file;
     m_hIconButton->setIcon(QIcon(file));
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::defaultPermissionOrFeatureCheckBoxClicked()
 {
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::updateAddRemovePermissionButtons()
@@ -1293,7 +1293,7 @@ void AndroidManifestEditorWidget::addPermission()
 {
     m_permissionsModel->addPermission(m_permissionsComboBox->currentText());
     updateAddRemovePermissionButtons();
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::removePermission()
@@ -1302,7 +1302,7 @@ void AndroidManifestEditorWidget::removePermission()
     if (idx.isValid())
         m_permissionsModel->removePermission(idx.row());
     updateAddRemovePermissionButtons();
-    setDirty(true);
+    setModified(true);
 }
 
 void AndroidManifestEditorWidget::setPackageName()
@@ -1312,7 +1312,7 @@ void AndroidManifestEditorWidget::setPackageName()
     bool valid = checkPackageName(packageName);
     m_packageNameWarning->setVisible(!valid);
     m_packageNameWarningIcon->setVisible(!valid);
-    setDirty(true);
+    setModified(true);
 }
 
 
diff --git a/src/plugins/android/androidmanifesteditorwidget.h b/src/plugins/android/androidmanifesteditorwidget.h
index 9dab5e8d1a..899393ca34 100644
--- a/src/plugins/android/androidmanifesteditorwidget.h
+++ b/src/plugins/android/androidmanifesteditorwidget.h
@@ -101,10 +101,10 @@ public:
     Core::IEditor *editor() const;
     TextEditor::TextEditorWidget *textEditorWidget() const;
 
-    void setDirty(bool dirty = true);
+    void setModified(bool modified = true);
 
 signals:
-    void guiChanged();
+    void modificationChanged(bool modified);
 
 protected:
     bool eventFilter(QObject *obj, QEvent *event);
@@ -150,7 +150,7 @@ private:
     QString parseComment(QXmlStreamReader &reader, QXmlStreamWriter &writer);
     void parseUnknownElement(QXmlStreamReader &reader, QXmlStreamWriter &writer);
 
-    bool m_dirty; // indicates that we need to call syncToEditor()
+    bool m_modified; // indicates that we need to call syncToEditor()
     bool m_stayClean;
     int m_errorLine;
     int m_errorColumn;
diff --git a/src/plugins/bineditor/bineditorplugin.cpp b/src/plugins/bineditor/bineditorplugin.cpp
index 5fcccd7838..050bbcb697 100644
--- a/src/plugins/bineditor/bineditorplugin.cpp
+++ b/src/plugins/bineditor/bineditorplugin.cpp
@@ -320,12 +320,6 @@ public:
     }
 
 public:
-    bool isModified() const override
-    {
-        return isTemporary()/*e.g. memory view*/ ? false
-                                                 : m_widget->isModified();
-    }
-
     bool isFileReadOnly() const override {
         const FileName fn = filePath();
         if (fn.isEmpty())
@@ -391,7 +385,12 @@ public:
         connect(m_addressEdit, &QLineEdit::editingFinished,
                 this, &BinEditor::jumpToAddress);
         connect(widget, &BinEditorWidget::modificationChanged,
-                m_file, &IDocument::changed);
+                m_file, &IDocument::setModified);
+        connect(m_file, &IDocument::modificationChanged,
+                widget, &BinEditorWidget::setModified);
+
+        m_file->setModified(widget->isModified());
+
         updateCursorPosition(widget->cursorPosition());
     }
 
diff --git a/src/plugins/coreplugin/idocument.cpp b/src/plugins/coreplugin/idocument.cpp
index fefff6a701..9023eb73ea 100644
--- a/src/plugins/coreplugin/idocument.cpp
+++ b/src/plugins/coreplugin/idocument.cpp
@@ -79,6 +79,7 @@ public:
     bool hasWriteWarning = false;
     bool restored = false;
     bool isSuspendAllowed = false;
+    bool isModified = false;
 };
 
 } // namespace Internal
@@ -200,7 +201,17 @@ bool IDocument::shouldAutoSave() const
 
 bool IDocument::isModified() const
 {
-    return false;
+    return d->isModified;
+}
+
+void IDocument::setModified(bool modified)
+{
+    if (d->isModified == modified)
+        return;
+
+    d->isModified = modified;
+    emit modificationChanged(modified);
+    emit changed();
 }
 
 bool IDocument::isSaveAsAllowed() const
diff --git a/src/plugins/coreplugin/idocument.h b/src/plugins/coreplugin/idocument.h
index acb1feb58b..79cc403e6f 100644
--- a/src/plugins/coreplugin/idocument.h
+++ b/src/plugins/coreplugin/idocument.h
@@ -106,6 +106,9 @@ public:
     bool isTemporary() const;
     void setTemporary(bool temporary);
 
+    bool isModified() const;
+    void setModified(bool modified);
+
     virtual QString fallbackSaveAsPath() const;
     virtual QString fallbackSaveAsFileName() const;
 
@@ -113,7 +116,6 @@ public:
     void setMimeType(const QString &mimeType);
 
     virtual bool shouldAutoSave() const;
-    virtual bool isModified() const;
     virtual bool isSaveAsAllowed() const;
     bool isSuspendAllowed() const;
     void setSuspendAllowed(bool value);
@@ -136,6 +138,8 @@ signals:
     // For meta data changes: file name, modified state, ...
     void changed();
 
+    void modificationChanged(bool modified);
+
     // For changes in the contents of the document
     void contentsChanged();
 
diff --git a/src/plugins/designer/formwindowfile.cpp b/src/plugins/designer/formwindowfile.cpp
index 44ec146b77..a6c58617fc 100644
--- a/src/plugins/designer/formwindowfile.cpp
+++ b/src/plugins/designer/formwindowfile.cpp
@@ -59,6 +59,9 @@ FormWindowFile::FormWindowFile(QDesignerFormWindowInterface *form, QObject *pare
     connect(m_formWindow->commandHistory(), &QUndoStack::indexChanged,
             this, &FormWindowFile::setShouldAutoSave);
     connect(m_formWindow.data(), &QDesignerFormWindowInterface::changed, this, &FormWindowFile::updateIsModified);
+    connect(this, &IDocument::modificationChanged, m_formWindow.data(), &QDesignerFormWindowInterface::setDirty);
+
+    setModified(m_formWindow->isDirty());
 
     m_resourceHandler = new ResourceHandler(form);
     connect(this, &FormWindowFile::filePathChanged,
@@ -186,10 +189,7 @@ void FormWindowFile::updateIsModified()
     bool value = m_formWindow && m_formWindow->isDirty();
     if (value)
         emit contentsChanged();
-    if (value == m_isModified)
-        return;
-    m_isModified = value;
-    emit changed();
+    setModified(value);
 }
 
 bool FormWindowFile::shouldAutoSave() const
@@ -197,11 +197,6 @@ bool FormWindowFile::shouldAutoSave() const
     return m_shouldAutoSave;
 }
 
-bool FormWindowFile::isModified() const
-{
-    return m_formWindow && m_formWindow->isDirty();
-}
-
 bool FormWindowFile::isSaveAsAllowed() const
 {
     return true;
diff --git a/src/plugins/designer/formwindowfile.h b/src/plugins/designer/formwindowfile.h
index 7ee62bb951..f12e854a2a 100644
--- a/src/plugins/designer/formwindowfile.h
+++ b/src/plugins/designer/formwindowfile.h
@@ -53,7 +53,6 @@ public:
     QByteArray contents() const override;
     bool setContents(const QByteArray &contents) override;
     bool shouldAutoSave() const override;
-    bool isModified() const override;
     bool isSaveAsAllowed() const override;
     bool reload(QString *errorString, ReloadFlag flag, ChangeType type) override;
     QString fallbackSaveAsFileName() const override;
@@ -82,7 +81,6 @@ private:
     // Might actually go out of scope before the IEditor due
     // to deleting the WidgetHost which owns it.
     QPointer<QDesignerFormWindowInterface> m_formWindow;
-    bool m_isModified = false;
     ResourceHandler *m_resourceHandler = nullptr;
 };
 
diff --git a/src/plugins/modeleditor/extpropertiesmview.cpp b/src/plugins/modeleditor/extpropertiesmview.cpp
index 529f251dca..2037621658 100644
--- a/src/plugins/modeleditor/extpropertiesmview.cpp
+++ b/src/plugins/modeleditor/extpropertiesmview.cpp
@@ -92,7 +92,7 @@ void ExtPropertiesMView::onConfigPathChanged(const QString &path)
     if (path.isEmpty()) {
         if (!project->configPath().isEmpty()) {
             project->setConfigPath(QString());
-            m_projectController->setModified();
+            m_projectController->setModified(true);
             modified = true;
         }
     } else {
@@ -103,7 +103,7 @@ void ExtPropertiesMView::onConfigPathChanged(const QString &path)
         QString configPath = projectDir.relativeFilePath(absConfigPath.filePath());
         if (configPath != project->configPath()) {
             project->setConfigPath(configPath);
-            m_projectController->setModified();
+            m_projectController->setModified(true);
             modified = true;
         }
     }
diff --git a/src/plugins/modeleditor/modeldocument.cpp b/src/plugins/modeleditor/modeldocument.cpp
index e75ff0760e..82a38f19ef 100644
--- a/src/plugins/modeleditor/modeldocument.cpp
+++ b/src/plugins/modeleditor/modeldocument.cpp
@@ -94,7 +94,7 @@ bool ModelDocument::save(QString *errorString, const QString &name, bool autoSav
     }
 
     if (autoSave) {
-        d->documentController->projectController()->setModified();
+        d->documentController->projectController()->setModified(true);
     } else {
         setFilePath(Utils::FileName::fromString(d->documentController->projectController()->project()->fileName()));
         emit changed();
@@ -108,11 +108,6 @@ bool ModelDocument::shouldAutoSave() const
     return isModified();
 }
 
-bool ModelDocument::isModified() const
-{
-    return d->documentController ? d->documentController->projectController()->isModified() : false;
-}
-
 bool ModelDocument::isSaveAsAllowed() const
 {
     return true;
@@ -140,6 +135,10 @@ Core::IDocument::OpenResult ModelDocument::load(QString *errorString, const QStr
 {
     d->documentController = ModelEditorPlugin::modelsManager()->createModel(this);
     connect(d->documentController, &qmt::DocumentController::changed, this, &IDocument::changed);
+    connect(d->documentController, &qmt::DocumentController::modificationChanged, this, &IDocument::setModified);
+    connect(this, &IDocument::modificationChanged,
+            d->documentController->projectController(), &qmt::ProjectController::setModified);
+    setModified(d->documentController->projectController()->isModified());
 
     try {
         d->documentController->loadProject(fileName);
diff --git a/src/plugins/modeleditor/modeldocument.h b/src/plugins/modeleditor/modeldocument.h
index f83085866a..2d0a0aafee 100644
--- a/src/plugins/modeleditor/modeldocument.h
+++ b/src/plugins/modeleditor/modeldocument.h
@@ -52,7 +52,6 @@ public:
                                const QString &realFileName) override;
     bool save(QString *errorString, const QString &fileName, bool autoSave) override;
     bool shouldAutoSave() const override;
-    bool isModified() const override;
     bool isSaveAsAllowed() const override;
     bool reload(QString *errorString, ReloadFlag flag, ChangeType type) override;
 
diff --git a/src/plugins/resourceeditor/resourceeditorw.cpp b/src/plugins/resourceeditor/resourceeditorw.cpp
index 2058c3a2ea..765aa5e110 100644
--- a/src/plugins/resourceeditor/resourceeditorw.cpp
+++ b/src/plugins/resourceeditor/resourceeditorw.cpp
@@ -63,10 +63,14 @@ ResourceEditorDocument::ResourceEditorDocument(QObject *parent) :
     setId(ResourceEditor::Constants::RESOURCEEDITOR_ID);
     setMimeType(QLatin1String(ResourceEditor::Constants::C_RESOURCE_MIMETYPE));
     connect(m_model, &RelativeResourceModel::dirtyChanged,
-            this, &ResourceEditorDocument::dirtyChanged);
+            this, &ResourceEditorDocument::setModified);
+    connect(this, &IDocument::modificationChanged,
+            m_model, &RelativeResourceModel::setDirty);
     connect(m_model, &ResourceModel::contentsChanged,
             this, &IDocument::contentsChanged);
 
+    setModified(m_model->dirty());
+
     if (debugResourceEditorW)
         qDebug() <<  "ResourceEditorFile::ResourceEditorFile()";
 }
@@ -124,20 +128,16 @@ Core::IDocument::OpenResult ResourceEditorDocument::open(QString *errorString,
     if (debugResourceEditorW)
         qDebug() <<  "ResourceEditorW::open: " << fileName;
 
-    setBlockDirtyChanged(true);
-
     m_model->setFileName(realFileName);
 
     OpenResult openResult = m_model->reload();
     if (openResult != OpenResult::Success) {
         *errorString = m_model->errorMessage();
-        setBlockDirtyChanged(false);
         emit loaded(false);
         return openResult;
     }
 
     setFilePath(FileName::fromString(fileName));
-    setBlockDirtyChanged(false);
     m_model->setDirty(fileName != realFileName);
     m_shouldAutoSave = false;
 
@@ -155,12 +155,10 @@ bool ResourceEditorDocument::save(QString *errorString, const QString &name, boo
     if (actualName.isEmpty())
         return false;
 
-    m_blockDirtyChanged = true;
     m_model->setFileName(actualName.toString());
     if (!m_model->save()) {
         *errorString = m_model->errorMessage();
         m_model->setFileName(oldFileName.toString());
-        m_blockDirtyChanged = false;
         return false;
     }
 
@@ -168,12 +166,10 @@ bool ResourceEditorDocument::save(QString *errorString, const QString &name, boo
     if (autoSave) {
         m_model->setFileName(oldFileName.toString());
         m_model->setDirty(true);
-        m_blockDirtyChanged = false;
         return true;
     }
 
     setFilePath(actualName);
-    m_blockDirtyChanged = false;
 
     emit changed();
     return true;
@@ -213,11 +209,6 @@ void ResourceEditorDocument::setFilePath(const FileName &newName)
     IDocument::setFilePath(newName);
 }
 
-void ResourceEditorDocument::setBlockDirtyChanged(bool value)
-{
-    m_blockDirtyChanged = value;
-}
-
 RelativeResourceModel *ResourceEditorDocument::model() const
 {
     return m_model;
@@ -238,11 +229,6 @@ bool ResourceEditorDocument::shouldAutoSave() const
     return m_shouldAutoSave;
 }
 
-bool ResourceEditorDocument::isModified() const
-{
-    return m_model->dirty();
-}
-
 bool ResourceEditorDocument::isSaveAsAllowed() const
 {
     return true;
@@ -264,16 +250,6 @@ bool ResourceEditorDocument::reload(QString *errorString, ReloadFlag flag, Chang
     return true;
 }
 
-void ResourceEditorDocument::dirtyChanged(bool dirty)
-{
-    if (m_blockDirtyChanged)
-        return; // We emit changed() afterwards, unless it was an autosave
-
-    if (debugResourceEditorW)
-        qDebug() << " ResourceEditorW::dirtyChanged" <<  dirty;
-    emit changed();
-}
-
 void ResourceEditorW::onUndoStackChanged(bool canUndo, bool canRedo)
 {
     m_plugin->onUndoStackChanged(this, canUndo, canRedo);
diff --git a/src/plugins/resourceeditor/resourceeditorw.h b/src/plugins/resourceeditor/resourceeditorw.h
index 3d8d139e3c..0ac7005df4 100644
--- a/src/plugins/resourceeditor/resourceeditorw.h
+++ b/src/plugins/resourceeditor/resourceeditorw.h
@@ -58,11 +58,9 @@ public:
     QByteArray contents() const override;
     bool setContents(const QByteArray &contents) override;
     bool shouldAutoSave() const override;
-    bool isModified() const override;
     bool isSaveAsAllowed() const override;
     bool reload(QString *errorString, ReloadFlag flag, ChangeType type) override;
     void setFilePath(const Utils::FileName &newName) override;
-    void setBlockDirtyChanged(bool value);
 
     RelativeResourceModel *model() const;
     void setShouldAutoSave(bool save);
@@ -71,10 +69,8 @@ signals:
     void loaded(bool success);
 
 private:
-    void dirtyChanged(bool);
 
     RelativeResourceModel *m_model;
-    bool m_blockDirtyChanged = false;
     bool m_shouldAutoSave = false;
 };
 
diff --git a/src/plugins/scxmleditor/common/mainwidget.cpp b/src/plugins/scxmleditor/common/mainwidget.cpp
index 09c00c0f62..e68b573600 100644
--- a/src/plugins/scxmleditor/common/mainwidget.cpp
+++ b/src/plugins/scxmleditor/common/mainwidget.cpp
@@ -789,6 +789,11 @@ bool MainWidget::isDirty() const
     return m_document->changed();
 }
 
+void MainWidget::setDirty(bool dirty)
+{
+    m_document->setChanged(dirty);
+}
+
 void MainWidget::fitToView()
 {
     StateView *view = m_views.last();
diff --git a/src/plugins/scxmleditor/common/mainwidget.h b/src/plugins/scxmleditor/common/mainwidget.h
index 6b75895b0f..64e17a9730 100644
--- a/src/plugins/scxmleditor/common/mainwidget.h
+++ b/src/plugins/scxmleditor/common/mainwidget.h
@@ -87,6 +87,7 @@ public:
     QString contents() const;
     QUndoStack *undoStack() const;
     bool isDirty() const;
+    void setDirty(bool dirty);
     void newDocument();
     void refresh();
     OutputPane::WarningModel *warningModel() const;
diff --git a/src/plugins/scxmleditor/plugin_interface/scxmldocument.cpp b/src/plugins/scxmleditor/plugin_interface/scxmldocument.cpp
index 22cbdf4d4e..1ad7b9ba2f 100644
--- a/src/plugins/scxmleditor/plugin_interface/scxmldocument.cpp
+++ b/src/plugins/scxmleditor/plugin_interface/scxmldocument.cpp
@@ -643,6 +643,14 @@ bool ScxmlDocument::changed() const
     return !m_undoStack->isClean();
 }
 
+void ScxmlDocument::setChanged(bool modified)
+{
+    if (modified)
+        ; // we lack a setDirty method in QUndoStack
+    else
+        m_undoStack->setClean();
+}
+
 ScxmlTag *ScxmlDocument::scxmlRootTag() const
 {
     ScxmlTag *tag = rootTag();
diff --git a/src/plugins/scxmleditor/plugin_interface/scxmldocument.h b/src/plugins/scxmleditor/plugin_interface/scxmldocument.h
index 19506731f2..5d654d4d0b 100644
--- a/src/plugins/scxmleditor/plugin_interface/scxmldocument.h
+++ b/src/plugins/scxmleditor/plugin_interface/scxmldocument.h
@@ -156,6 +156,7 @@ public:
      * @return - true if changed, false otherwise
      */
     bool changed() const;
+    void setChanged(bool modified);
 
     /**
      * @brief rootTag - return rootTag of the document
@@ -277,6 +278,7 @@ private:
     ScxmlTag *createScxmlTag();
     QString m_fileName;
     QUndoStack *m_undoStack;
+    int m_cleanIndex;
     QVector<ScxmlTag*> m_tags;
     QHash<QString, int> m_nextIdHash;
     QHash<QString, QString> m_idMap;
diff --git a/src/plugins/scxmleditor/scxmleditordocument.cpp b/src/plugins/scxmleditor/scxmleditordocument.cpp
index d7c09b9e88..97569bc7d2 100644
--- a/src/plugins/scxmleditor/scxmleditordocument.cpp
+++ b/src/plugins/scxmleditor/scxmleditordocument.cpp
@@ -52,9 +52,12 @@ ScxmlEditorDocument::ScxmlEditorDocument(MainWidget *designWidget, QObject *pare
 
     // Designer needs UTF-8 regardless of settings.
     setCodec(QTextCodec::codecForName("UTF-8"));
-    connect(m_designWidget.data(), &Common::MainWidget::dirtyChanged, this, [this]{
-        emit changed();
+    connect(m_designWidget.data(), &Common::MainWidget::dirtyChanged, this, [this](bool modified){
+        setModified(modified);
     });
+    connect(this, &IDocument::modificationChanged, m_designWidget.data(), &Common::MainWidget::setDirty);
+
+    setModified(m_designWidget->isDirty());
 }
 
 Core::IDocument::OpenResult ScxmlEditorDocument::open(QString *errorString, const QString &fileName, const QString &realFileName)
@@ -129,11 +132,6 @@ MainWidget *ScxmlEditorDocument::designWidget() const
     return m_designWidget;
 }
 
-bool ScxmlEditorDocument::isModified() const
-{
-    return m_designWidget && m_designWidget->isDirty();
-}
-
 bool ScxmlEditorDocument::reload(QString *errorString, ReloadFlag flag, ChangeType type)
 {
     if (flag == FlagIgnore) {
diff --git a/src/plugins/scxmleditor/scxmleditordocument.h b/src/plugins/scxmleditor/scxmleditordocument.h
index 2ccb98213d..a3211c656e 100644
--- a/src/plugins/scxmleditor/scxmleditordocument.h
+++ b/src/plugins/scxmleditor/scxmleditordocument.h
@@ -53,7 +53,6 @@ public:
     bool save(QString *errorString, const QString &fileName, bool autoSave) override;
     bool shouldAutoSave() const override;
     bool isSaveAsAllowed() const override;
-    bool isModified() const override;
     bool reload(QString *errorString, ReloadFlag flag, ChangeType type) override;
 
     // Internal
diff --git a/src/plugins/texteditor/textdocument.cpp b/src/plugins/texteditor/textdocument.cpp
index e3e7354644..418a0bd11a 100644
--- a/src/plugins/texteditor/textdocument.cpp
+++ b/src/plugins/texteditor/textdocument.cpp
@@ -236,13 +236,16 @@ void TextDocumentPrivate::updateRevisions()
 TextDocument::TextDocument(Id id)
     : d(new TextDocumentPrivate)
 {
-    QObject::connect(&d->m_document, &QTextDocument::modificationChanged, [this](bool modified) {
+    connect(&d->m_document, &QTextDocument::modificationChanged, [this](bool modified) {
         // we only want to update the block revisions when going back to the saved version,
         // e.g. with undo
         if (!modified)
             d->updateRevisions();
-        emit changed();
+        setModified(modified);
     });
+    connect(this, &IDocument::modificationChanged, &d->m_document, &QTextDocument::setModified);
+
+    setModified(d->m_document.isModified());
 
     connect(&d->m_document, &QTextDocument::contentsChanged,
             this, &Core::IDocument::contentsChanged);
@@ -595,11 +598,6 @@ bool TextDocument::isFileReadOnly() const
     return d->m_fileIsReadOnly;
 }
 
-bool TextDocument::isModified() const
-{
-    return d->m_document.isModified();
-}
-
 void TextDocument::checkPermissions()
 {
     bool previousReadOnly = d->m_fileIsReadOnly;
diff --git a/src/plugins/texteditor/textdocument.h b/src/plugins/texteditor/textdocument.h
index 6aa2e0bd7c..78cd3dd4b8 100644
--- a/src/plugins/texteditor/textdocument.h
+++ b/src/plugins/texteditor/textdocument.h
@@ -103,7 +103,6 @@ public:
     bool setContents(const QByteArray &contents) override;
     bool shouldAutoSave() const override;
     bool isFileReadOnly() const override;
-    bool isModified() const override;
     bool isSaveAsAllowed() const override;
     void checkPermissions() override;
     bool reload(QString *errorString, ReloadFlag flag, ChangeType type) override;
diff --git a/src/plugins/vcsbase/submiteditorfile.cpp b/src/plugins/vcsbase/submiteditorfile.cpp
index 9136118bf7..9a38537078 100644
--- a/src/plugins/vcsbase/submiteditorfile.cpp
+++ b/src/plugins/vcsbase/submiteditorfile.cpp
@@ -44,7 +44,6 @@ using namespace Utils;
 
 SubmitEditorFile::SubmitEditorFile(const VcsBaseSubmitEditorParameters *parameters, VcsBaseSubmitEditor *parent) :
     Core::IDocument(parent),
-    m_modified(false),
     m_editor(parent)
 {
     setId(parameters->id);
@@ -83,14 +82,6 @@ bool SubmitEditorFile::setContents(const QByteArray &contents)
     return m_editor->setFileContents(contents);
 }
 
-void SubmitEditorFile::setModified(bool modified)
-{
-    if (m_modified == modified)
-        return;
-    m_modified = modified;
-    emit changed();
-}
-
 bool SubmitEditorFile::save(QString *errorString, const QString &fileName, bool autoSave)
 {
     const FileName fName = fileName.isEmpty() ? filePath() : FileName::fromString(fileName);
diff --git a/src/plugins/vcsbase/submiteditorfile.h b/src/plugins/vcsbase/submiteditorfile.h
index e2da2f72fa..82263f9ef0 100644
--- a/src/plugins/vcsbase/submiteditorfile.h
+++ b/src/plugins/vcsbase/submiteditorfile.h
@@ -45,14 +45,10 @@ public:
     QByteArray contents() const override;
     bool setContents(const QByteArray &contents) override;
 
-    bool isModified() const override { return m_modified; }
     bool save(QString *errorString, const QString &fileName, bool autoSave) override;
     ReloadBehavior reloadBehavior(ChangeTrigger state, ChangeType type) const override;
 
-    void setModified(bool modified = true);
-
 private:
-    bool m_modified;
     VcsBaseSubmitEditor *m_editor;
 };