add errorString output argument to IFile::save()

this centralizes error reporting (in fact, in most cases it adds any in
the first place).

Task-number: QTCREATORBUG-1619

src/plugins/bineditor/bineditor.cpp

@@ -35,6 +35,7 @@
 #include <texteditor/fontsettings.h>
 #include <texteditor/texteditorconstants.h>
 #include <coreplugin/editormanager/ieditor.h>
+#include <utils/fileutils.h>
 
 #include <QtCore/QByteArrayMatcher>
 #include <QtCore/QDebug>
@@ -337,7 +338,7 @@ bool BinEditor::isReadOnly() const
     return m_readOnly;
 }
 
-bool BinEditor::save(const QString &oldFileName, const QString &newFileName)
+bool BinEditor::save(QString *errorString, const QString &oldFileName, const QString &newFileName)
 {
     if (oldFileName != newFileName) {
         QString tmpName;
@@ -354,21 +355,26 @@ bool BinEditor::save(const QString &oldFileName, const QString &newFileName)
         if (!QFile::rename(tmpName, newFileName))
             return false;
     }
-    QFile output(newFileName);
-    if (!output.open(QIODevice::ReadWrite)) // QtBug: WriteOnly truncates.
-        return false;
-    const qint64 size = output.size();
-    for (BlockMap::const_iterator it = m_modifiedData.constBegin();
-        it != m_modifiedData.constEnd(); ++it) {
-        if (!output.seek(it.key() * m_blockSize))
-            return false;
-        if (output.write(it.value()) < m_blockSize)
-            return false;
-    }
+    Utils::FileSaver saver(newFileName, QIODevice::ReadWrite); // QtBug: WriteOnly truncates.
+    if (!saver.hasError()) {
+        QFile *output = saver.file();
+        const qint64 size = output->size();
+        for (BlockMap::const_iterator it = m_modifiedData.constBegin();
+            it != m_modifiedData.constEnd(); ++it) {
+            if (!saver.setResult(output->seek(it.key() * m_blockSize)))
+                break;
+            if (!saver.write(it.value()))
+                break;
+            if (!saver.setResult(output->flush()))
+                break;
+        }
 
-    // We may have padded the displayed data, so we have to make sure
-    // changes to that area are not actually written back to disk.
-    if (!output.resize(size))
+        // We may have padded the displayed data, so we have to make sure
+        // changes to that area are not actually written back to disk.
+        if (!saver.hasError())
+            saver.setResult(output->resize(size));
+    }
+    if (!saver.finalize(errorString))
         return false;
 
     setModified(false);

src/plugins/bineditor/bineditor.h

@@ -72,7 +72,7 @@ public:
     Q_INVOKABLE void addData(quint64 block, const QByteArray &data);
     Q_INVOKABLE void setNewWindowRequestAllowed();
     Q_INVOKABLE void updateContents();
-    bool save(const QString &oldFileName, const QString &newFileName);
+    bool save(QString *errorString, const QString &oldFileName, const QString &newFileName);
 
     void zoomIn(int range = 1);
     void zoomOut(int range = 1);

src/plugins/bineditor/bineditorplugin.cpp

@@ -199,10 +199,11 @@ public:
         return QLatin1String(Constants::C_BINEDITOR_MIMETYPE);
     }
 
-    bool save(const QString &fileName = QString()) {
+    bool save(QString *errorString, const QString &fileName = QString())
+    {
         const QString fileNameToUse
             = fileName.isEmpty() ? m_fileName : fileName;
-        if (m_editor->save(m_fileName, fileNameToUse)) {
+        if (m_editor->save(errorString, m_fileName, fileNameToUse)) {
             m_fileName = fileNameToUse;
             m_editor->editor()->setDisplayName(QFileInfo(fileNameToUse).fileName());
             emit changed();

src/plugins/cmakeprojectmanager/cmakeproject.cpp

@@ -735,10 +735,11 @@ CMakeFile::CMakeFile(CMakeProject *parent, QString fileName)
 
 }
 
-bool CMakeFile::save(const QString &fileName)
+bool CMakeFile::save(QString *errorString, const QString &fileName)
 {
     // Once we have an texteditor open for this file, we probably do
     // need to implement this, don't we.
+    Q_UNUSED(errorString)
     Q_UNUSED(fileName)
     return false;
 }

src/plugins/cmakeprojectmanager/cmakeproject.h

@@ -199,7 +199,7 @@ class CMakeFile : public Core::IFile
 public:
     CMakeFile(CMakeProject *parent, QString fileName);
 
-    bool save(const QString &fileName = QString());
+    bool save(QString *errorString, const QString &fileName = QString());
     QString fileName() const;
 
     QString defaultPath() const;

src/plugins/coreplugin/editormanager/editormanager.cpp

@@ -1373,11 +1373,12 @@ bool EditorManager::saveFile(IFile *fileParam)
         return saveFileAs(file);
 
     bool success = false;
+    bool isReadOnly;
 
     // try saving, no matter what isReadOnly tells us
-    success = m_d->m_core->fileManager()->saveFile(file);
+    success = m_d->m_core->fileManager()->saveFile(file, QString(), &isReadOnly);
 
-    if (!success) {
+    if (!success && isReadOnly) {
         MakeWritableResult answer =
                 makeFileWritable(file);
         if (answer == Failed)

src/plugins/coreplugin/filemanager.cpp

@@ -638,9 +638,24 @@ QList<IFile *> FileManager::saveModifiedFiles(const QList<IFile *> &files,
     return notSaved;
 }
 
-bool FileManager::saveFile(IFile *file, const QString &fileName)
+bool FileManager::saveFile(IFile *file, const QString &fileName, bool *isReadOnly)
 {
-    const bool success = file->save(fileName);
+    QString effName = fileName.isEmpty() ? file->fileName() : fileName;
+    QString errorString;
+    if (!file->save(&errorString, fileName)) {
+        if (isReadOnly) {
+            QFile ofi(effName);
+            // Check whether the existing file is writable
+            if (ofi.exists() && !ofi.open(QIODevice::ReadWrite)
+                && ofi.error() == QFile::PermissionsError) {
+                *isReadOnly = true;
+                return false;
+            }
+            *isReadOnly = false;
+        }
+        QMessageBox::critical(d->m_mainWindow, tr("File Error"), errorString);
+        return false;
+    }
 
     // We are updating the lastUpdated time to the current modification time
     // in changedFile we'll compare the modification time with the last updated
@@ -655,7 +670,7 @@ bool FileManager::saveFile(IFile *file, const QString &fileName)
     foreach (const QString &fileName, d->m_filesWithWatch.value(file))
         updateExpectedState(fileName);
 
-    return success;
+    return true;
 }
 
 QString FileManager::getSaveFileName(const QString &title, const QString &pathIn,

src/plugins/coreplugin/filemanager.h

@@ -94,7 +94,7 @@ public:
     // helper methods
     static QString fixFileName(const QString &fileName, FixMode fixmode);
 
-    bool saveFile(IFile *file, const QString &fileName = QString());
+    bool saveFile(IFile *file, const QString &fileName = QString(), bool *isReadOnly = 0);
 
     QStringList getOpenFileNames(const QString &filters,
                                  const QString path = QString(),

src/plugins/coreplugin/ifile.h

@@ -83,7 +83,7 @@ public:
     IFile(QObject *parent = 0) : QObject(parent) {}
     virtual ~IFile() {}
 
-    virtual bool save(const QString &fileName = QString()) = 0;
+    virtual bool save(QString *errorString, const QString &fileName = QString()) = 0;
     virtual QString fileName() const = 0;
 
     virtual QString defaultPath() const = 0;

src/plugins/designer/formwindowfile.cpp

@@ -35,6 +35,7 @@
 
 #include <coreplugin/icore.h>
 #include <utils/reloadpromptutils.h>
+#include <utils/fileutils.h>
 #include <utils/qtcassert.h>
 
 #include <QtDesigner/QDesignerFormWindowInterface>
@@ -62,7 +63,7 @@ FormWindowFile::FormWindowFile(QDesignerFormWindowInterface *form, QObject *pare
             this, SLOT(slotFormWindowRemoved(QDesignerFormWindowInterface*)));
 }
 
-bool FormWindowFile::save(const QString &name /* = QString() */)
+bool FormWindowFile::save(QString *errorString, const QString &name /* = QString() */)
 {
     const QString actualName = name.isEmpty() ? fileName() : name;
 
@@ -79,12 +80,10 @@ bool FormWindowFile::save(const QString &name /* = QString() */)
     const QString formName = fi.absoluteFilePath();
     m_formWindow->setFileName(formName);
 
-    QString errorString;
     const bool warningsEnabled = qdesigner_internal::QSimpleResource::setWarningsEnabled(false);
     const bool writeOK = writeFile(actualName, errorString);
     qdesigner_internal::QSimpleResource::setWarningsEnabled(warningsEnabled);
     if (!writeOK) {
-        QMessageBox::critical(0, tr("Error saving %1").arg(formName), errorString);
         m_formWindow->setFileName(oldFormName);
         return false;
     }
@@ -178,29 +177,14 @@ QString FormWindowFile::mimeType() const
     return m_mimeType;
 }
 
-bool FormWindowFile::writeFile(const QString &fileName, QString &errorString) const
+bool FormWindowFile::writeFile(const QString &fileName, QString *errorString) const
 {
     if (Designer::Constants::Internal::debug)
         qDebug() << Q_FUNC_INFO << m_fileName << fileName;
 
-    QFile file(fileName);
-    if (!file.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
-        errorString = tr("Unable to open %1: %2").arg(fileName, file.errorString());
-        return false;
-    }
-    const bool rc = writeFile(file, errorString);
-    file.close();
-    return rc;
-}
-
-bool FormWindowFile::writeFile(QFile &file, QString &errorString) const
-{
-    const QByteArray content = m_formWindow->contents().toUtf8();
-    if (!file.write(content)) {
-        errorString = tr("Unable to write to %1: %2").arg(file.fileName(), file.errorString());
-        return false;
-    }
-    return true;
+    Utils::FileSaver saver(fileName, QIODevice::Text);
+    saver.write(m_formWindow->contents().toUtf8());
+    return saver.finalize(errorString);
 }
 
 void FormWindowFile::setFileName(const QString &fname)

src/plugins/designer/formwindowfile.h

@@ -53,7 +53,7 @@ public:
     explicit FormWindowFile(QDesignerFormWindowInterface *form, QObject *parent = 0);
 
     // IFile
-    virtual bool save(const QString &fileName = QString());
+    virtual bool save(QString *errorString, const QString &fileName = QString());
     virtual QString fileName() const;
     virtual bool isModified() const;
     virtual bool isReadOnly() const;
@@ -68,8 +68,7 @@ public:
     // Internal
     void setSuggestedFileName(const QString &fileName);
 
-    bool writeFile(const QString &fileName, QString &errorString) const;
-    bool writeFile(QFile &file, QString &errorString) const;
+    bool writeFile(const QString &fileName, QString *errorString) const;
 
     QDesignerFormWindowInterface *formWindow() const;
 

src/plugins/genericprojectmanager/genericproject.cpp

@@ -565,7 +565,7 @@ GenericProjectFile::GenericProjectFile(GenericProject *parent, QString fileName)
 GenericProjectFile::~GenericProjectFile()
 { }
 
-bool GenericProjectFile::save(const QString &)
+bool GenericProjectFile::save(QString *, const QString &)
 {
     return false;
 }

src/plugins/genericprojectmanager/genericproject.h

@@ -159,7 +159,7 @@ public:
     GenericProjectFile(GenericProject *parent, QString fileName);
     virtual ~GenericProjectFile();
 
-    virtual bool save(const QString &fileName = QString());
+    virtual bool save(QString *errorString, const QString &fileName = QString());
     virtual QString fileName() const;
 
     virtual QString defaultPath() const;

src/plugins/genericprojectmanager/genericprojectfileseditor.cpp

@@ -173,9 +173,9 @@ ProjectFilesDocument::ProjectFilesDocument(Manager *manager)
 ProjectFilesDocument::~ProjectFilesDocument()
 { }
 
-bool ProjectFilesDocument::save(const QString &name)
+bool ProjectFilesDocument::save(QString *errorString, const QString &name)
 {
-    if (! BaseTextDocument::save(name))
+    if (! BaseTextDocument::save(errorString, name))
         return false;
 
     m_manager->notifyChanged(name);

src/plugins/genericprojectmanager/genericprojectfileseditor.h

@@ -113,7 +113,7 @@ public:
     ProjectFilesDocument(Manager *manager);
     virtual ~ProjectFilesDocument();
 
-    virtual bool save(const QString &name);
+    virtual bool save(QString *errorString, const QString &name);
 
 private:
     Manager *m_manager;

src/plugins/imageviewer/imageviewerfile.cpp

@@ -86,8 +86,9 @@ void ImageViewerFile::reload(Core::IFile::ReloadFlag flag,
     }
 }
 
-bool ImageViewerFile::save(const QString &fileName)
+bool ImageViewerFile::save(QString *errorString, const QString &fileName)
 {
+    Q_UNUSED(errorString)
     Q_UNUSED(fileName);
     return false;
 }

src/plugins/imageviewer/imageviewerfile.h

@@ -49,7 +49,7 @@ public:
     explicit ImageViewerFile(ImageViewer *parent = 0);
     ~ImageViewerFile();
 
-    bool save(const QString &fileName = QString());
+    bool save(QString *errorString, const QString &fileName = QString());
     void rename(const QString &newName);
     QString fileName() const;
 

src/plugins/qmlprojectmanager/qmlprojectfile.cpp

@@ -46,7 +46,7 @@ QmlProjectFile::QmlProjectFile(QmlProject *parent, QString fileName)
 QmlProjectFile::~QmlProjectFile()
 { }
 
-bool QmlProjectFile::save(const QString &)
+bool QmlProjectFile::save(QString *, const QString &)
 {
     return false;
 }

src/plugins/qmlprojectmanager/qmlprojectfile.h

@@ -49,7 +49,7 @@ public:
     QmlProjectFile(QmlProject *parent, QString fileName);
     virtual ~QmlProjectFile();
 
-    virtual bool save(const QString &fileName = QString());
+    virtual bool save(QString *errorString, const QString &fileName = QString());
     virtual QString fileName() const;
     virtual void rename(const QString &newName);
 

src/plugins/qt4projectmanager/qt4nodes.cpp

@@ -175,8 +175,9 @@ Qt4PriFile::Qt4PriFile(Qt4PriFileNode *qt4PriFile)
 
 }
 
-bool Qt4PriFile::save(const QString &fileName)
+bool Qt4PriFile::save(QString *errorString, const QString &fileName)
 {
+    Q_UNUSED(errorString);
     Q_UNUSED(fileName);
     return false;
 }

src/plugins/qt4projectmanager/qt4nodes.h

@@ -115,7 +115,7 @@ class Qt4PriFile : public Core::IFile
     Q_OBJECT
 public:
     Qt4PriFile(Qt4PriFileNode *qt4PriFile);
-    virtual bool save(const QString &fileName = QString());
+    virtual bool save(QString *errorString, const QString &fileName = QString());
     virtual QString fileName() const;
     virtual void rename(const QString &newName);
 

src/plugins/qt4projectmanager/qt4project.cpp

@@ -182,7 +182,7 @@ Qt4ProjectFile::Qt4ProjectFile(Qt4Project *project, const QString &filePath, QOb
 {
 }
 
-bool Qt4ProjectFile::save(const QString &)
+bool Qt4ProjectFile::save(QString *, const QString &)
 {
     // This is never used
     return false;

src/plugins/qt4projectmanager/qt4project.h

@@ -79,7 +79,7 @@ class Qt4ProjectFile : public Core::IFile
 public:
     Qt4ProjectFile(Qt4Project *project, const QString &filePath, QObject *parent = 0);
 
-    bool save(const QString &fileName = QString());
+    bool save(QString *errorString, const QString &fileName = QString());
     QString fileName() const;
     virtual void rename(const QString &newName);
 

src/plugins/resourceeditor/resourceeditorw.cpp

@@ -138,7 +138,7 @@ bool ResourceEditorW::open(const QString &fileName /* = QString() */)
     return true;
 }
 
-bool ResourceEditorFile::save(const QString &name /* = QString() */)
+bool ResourceEditorFile::save(QString *errorString, const QString &name /* = QString() */)
 {
     if (debugResourceEditorW)
         qDebug(">ResourceEditorW::save: %s", qPrintable(name));
@@ -150,6 +150,7 @@ bool ResourceEditorFile::save(const QString &name /* = QString() */)
 
     m_parent->m_resourceEditor->setFileName(actualName);
     if (!m_parent->m_resourceEditor->save()) {
+        *errorString = m_parent->m_resourceEditor->errorMessage();
         m_parent->m_resourceEditor->setFileName(oldFileName);
         return false;
     }

src/plugins/resourceeditor/resourceeditorw.h

@@ -57,7 +57,7 @@ public:
     ResourceEditorFile(ResourceEditorW *parent = 0);
 
     //IFile
-    bool save(const QString &fileName = QString());
+    bool save(QString *errorString, const QString &fileName = QString());
     QString fileName() const;
     bool isModified() const;
     bool isReadOnly() const;

src/plugins/tasklist/taskfile.cpp

@@ -48,8 +48,9 @@ TaskFile::TaskFile(QObject *parent) : Core::IFile(parent),
 TaskFile::~TaskFile()
 { }
 
-bool TaskFile::save(const QString &fileName)
+bool TaskFile::save(QString *errorString, const QString &fileName)
 {
+    Q_UNUSED(errorString)
     Q_UNUSED(fileName);
     return false;
 }

src/plugins/tasklist/taskfile.h

@@ -48,7 +48,7 @@ public:
     TaskFile(QObject *parent);
     ~TaskFile();
 
-    bool save(const QString &fileName = QString());
+    bool save(QString *errorString, const QString &fileName = QString());
     QString fileName() const;
 
     QString defaultPath() const;

src/plugins/texteditor/basetextdocument.cpp

@@ -55,6 +55,7 @@
 #include <coreplugin/icore.h>
 #include <coreplugin/progressmanager/progressmanager.h>
 #include <utils/qtcassert.h>
+#include <utils/fileutils.h>
 #include <utils/reloadpromptutils.h>
 
 namespace {
@@ -362,7 +363,7 @@ ITextMarkable *BaseTextDocument::documentMarker() const
     return d->m_documentMarker;
 }
 
-bool BaseTextDocument::save(const QString &fileName)
+bool BaseTextDocument::save(QString *errorString, const QString &fileName)
 {
     QTextCursor cursor(d->m_document);
 
@@ -386,26 +387,24 @@ bool BaseTextDocument::save(const QString &fileName)
     if (!fileName.isEmpty())
         fName = fileName;
 
-    QFile file(fName);
-    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate))
-        return false;
+    Utils::FileSaver saver(fName);
+    if (!saver.hasError()) {
+        QString plainText = d->m_document->toPlainText();
 
-    QString plainText = d->m_document->toPlainText();
+        if (d->m_lineTerminatorMode == BaseTextDocumentPrivate::CRLFLineTerminator)
+            plainText.replace(QLatin1Char('\n'), QLatin1String("\r\n"));
 
-    if (d->m_lineTerminatorMode == BaseTextDocumentPrivate::CRLFLineTerminator)
-        plainText.replace(QLatin1Char('\n'), QLatin1String("\r\n"));
+        if (d->m_codec->name() == "UTF-8"
+                && (d->m_extraEncodingSettings.m_utf8BomSetting == ExtraEncodingSettings::AlwaysAdd
+                    || (d->m_extraEncodingSettings.m_utf8BomSetting == ExtraEncodingSettings::OnlyKeep
+                        && d->m_fileHasUtf8Bom))) {
+            saver.write("\xef\xbb\xbf", 3);
+        }
 
-    if (d->m_codec->name() == "UTF-8"
-            && (d->m_extraEncodingSettings.m_utf8BomSetting == ExtraEncodingSettings::AlwaysAdd
-                || (d->m_extraEncodingSettings.m_utf8BomSetting == ExtraEncodingSettings::OnlyKeep
-                    && d->m_fileHasUtf8Bom))) {
-        file.write("\xef\xbb\xbf", 3);
+        saver.write(d->m_codec->fromUnicode(plainText));
     }
-
-    file.write(d->m_codec->fromUnicode(plainText));
-    if (!file.flush())
+    if (!saver.finalize(errorString))
         return false;
-    file.close();
 
     const QFileInfo fi(fName);
     d->m_fileName = QDir::cleanPath(fi.absoluteFilePath());

src/plugins/texteditor/basetextdocument.h

@@ -70,7 +70,7 @@ public:
     ITextMarkable *documentMarker() const;
 
     // IFile implementation.
-    virtual bool save(const QString &fileName = QString());
+    virtual bool save(QString *errorString, const QString &fileName = QString());
     virtual QString fileName() const;
     virtual bool isReadOnly() const;
     virtual bool isModified() const;

src/plugins/vcsbase/submiteditorfile.cpp

@@ -69,9 +69,9 @@ void SubmitEditorFile::setModified(bool modified)
     emit changed();
 }
 
-bool SubmitEditorFile::save(const QString &fileName)
+bool SubmitEditorFile::save(QString *errorString, const QString &fileName)
 {
-    emit saveMe(fileName);
+    emit saveMe(errorString, fileName);
     emit changed();
     return true;
 }

src/plugins/vcsbase/submiteditorfile.h

@@ -53,7 +53,7 @@ public:
     virtual QString mimeType() const;
     bool isReadOnly() const { return false; }
     bool isSaveAsAllowed() const { return false; }
-    bool save(const QString &fileName);
+    bool save(QString *errorString, const QString &fileName);
     ReloadBehavior reloadBehavior(ChangeTrigger state, ChangeType type) const;
     void reload(ReloadFlag flag, ChangeType type);
     void rename(const QString &newName);
@@ -62,7 +62,7 @@ public:
     void setModified(bool modified = true);
 
 signals:
-    void saveMe(const QString &fileName);
+    void saveMe(QString *errorString, const QString &fileName);
 
 private:
     const QString m_mimeType;

src/plugins/vcsbase/vcsbasesubmiteditor.cpp

@@ -48,6 +48,7 @@
 #include <utils/checkablemessagebox.h>
 #include <utils/synchronousprocess.h>
 #include <utils/submitfieldwidget.h>
+#include <utils/fileutils.h>
 #include <find/basetextfind.h>
 #include <texteditor/fontsettings.h>
 #include <texteditor/texteditorsettings.h>
@@ -164,7 +165,7 @@ VCSBaseSubmitEditor::VCSBaseSubmitEditor(const VCSBaseSubmitEditorParameters *pa
 
     m_d->m_file->setModified(false);
     // We are always clean to prevent the editor manager from asking to save.
-    connect(m_d->m_file, SIGNAL(saveMe(QString)), this, SLOT(save(QString)));
+    connect(m_d->m_file, SIGNAL(saveMe(QString*, QString)), this, SLOT(save(QString*, QString)));
 
     connect(m_d->m_widget, SIGNAL(diffSelected(QStringList)), this, SLOT(slotDiffSelectedVCSFiles(QStringList)));
     connect(m_d->m_widget->descriptionEdit(), SIGNAL(textChanged()), this, SLOT(slotDescriptionChanged()));
@@ -457,18 +458,13 @@ void VCSBaseSubmitEditor::slotDiffSelectedVCSFiles(const QStringList &rawList)
      emit diffSelectedFiles(rawList);
 }
 
-bool VCSBaseSubmitEditor::save(const QString &fileName)
+bool VCSBaseSubmitEditor::save(QString *errorString, const QString &fileName)
 {
     const QString fName = fileName.isEmpty() ? m_d->m_file->fileName() : fileName;
-    QFile file(fName);
-    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
-        qWarning("Unable to open %s: %s", qPrintable(fName), qPrintable(file.errorString()));
+    Utils::FileSaver saver(fName, QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text);
+    saver.write(fileContents().toLocal8Bit());
+    if (!saver.finalize(errorString))
         return false;
-    }
-    file.write(fileContents().toLocal8Bit());
-    if (!file.flush())
-        return false;
-    file.close();
     const QFileInfo fi(fName);
     m_d->m_file->setFileName(fi.absoluteFilePath());
     m_d->m_file->setModified(false);

src/plugins/vcsbase/vcsbasesubmiteditor.h

@@ -159,7 +159,7 @@ signals:
 
 private slots:
     void slotDiffSelectedVCSFiles(const QStringList &rawList);
-    bool save(const QString &fileName);
+    bool save(QString *errorString, const QString &fileName);
     void slotDescriptionChanged();
     void slotCheckSubmitMessage();
     void slotInsertNickName();

src/shared/qrceditor/qrceditor.h

@@ -50,6 +50,7 @@ public:
 
     bool load(const QString &fileName);
     bool save();
+    QString errorMessage() const { return m_treeview->errorMessage(); }
 
     bool isDirty();
     void setDirty(bool dirty);

src/shared/qrceditor/resourcefile.cpp

@@ -200,7 +200,13 @@ bool ResourceFile::save()
 
     QTextStream stream(&file);
     doc.save(stream, 4);
-
+#if QT_VERSION >= QT_VERSION_CHECK(4, 8, 0)
+    stream.flush();
+    if (stream.status() != QTextStream::Ok) {
+        m_error_message = QCoreApplication::translate("Designer", "Cannot write file. Disk full?");
+        return false;
+    }
+#endif
     return true;
 }
 

src/shared/qrceditor/resourceview.h

@@ -91,6 +91,7 @@ public:
 
     bool load(const QString &fileName);
     bool save();
+    QString errorMessage() const { return m_qrcFile.errorMessage(); }
     QString fileName() const;
     void setFileName(const QString &fileName);