Don't ask to reload the file, if the user uses git/undo or git/revert.

Simply do it.

Task-Nr: 254558

src/plugins/coreplugin/filemanager.cpp

@@ -602,3 +602,33 @@ QList<IFile *> FileManager::managedFiles(const QString &fileName) const
     }
     return result;
 }
+
+FileChangeBlocker::FileChangeBlocker(const QString &fileName)
+    : m_reload(false)
+{
+    Core::FileManager *fm = Core::ICore::instance()->fileManager();
+    m_files = fm->managedFiles(fileName);
+    foreach (Core::IFile *file, m_files)
+        fm->blockFileChange(file);
+}
+
+FileChangeBlocker::~FileChangeBlocker()
+{
+    Core::IFile::ReloadBehavior tempBehavior = Core::IFile::ReloadAll;
+    Core::FileManager *fm = Core::ICore::instance()->fileManager();
+    foreach (Core::IFile *file, m_files) {
+        if (m_reload)
+            file->modified(&tempBehavior);
+        fm->unblockFileChange(file);
+    }
+}
+
+void FileChangeBlocker::setModifiedReload(bool b)
+{
+    m_reload = b;
+}
+
+bool FileChangeBlocker::modifiedReload() const
+{
+    return m_reload;
+}

src/plugins/coreplugin/filemanager.h

@@ -136,6 +136,25 @@ private:
     bool m_blockActivated;
 };
 
+/*! The FileChangeBlocker blocks all change notifications to all IFile * that
+    match the given filename. And unblocks in the destructor.
+
+    To also reload the IFile in the destructor class set modifiedReload to true
+
+  */
+class CORE_EXPORT FileChangeBlocker
+{
+public:
+    FileChangeBlocker(const QString &fileName);
+    ~FileChangeBlocker();
+    void setModifiedReload(bool reload);
+    bool modifiedReload() const;
+private:
+    QList<IFile *> m_files;
+    bool m_reload;
+    Q_DISABLE_COPY(FileChangeBlocker);
+};
+
 } // namespace Core
 
 #endif // FILEMANAGER_H

src/plugins/git/gitclient.cpp

@@ -42,6 +42,7 @@
 #include <coreplugin/messagemanager.h>
 #include <coreplugin/progressmanager/progressmanager.h>
 #include <coreplugin/uniqueidmanager.h>
+#include <coreplugin/filemanager.h>
 #include <texteditor/itexteditor.h>
 #include <utils/qtcassert.h>
 #include <vcsbase/vcsbaseeditor.h>

src/plugins/git/gitplugin.cpp

@@ -553,7 +553,14 @@ void GitPlugin::undoFileChanges()
     QFileInfo fileInfo = currentFile();
     QString fileName = fileInfo.fileName();
     QString workingDirectory = fileInfo.absolutePath();
-    m_gitClient->checkout(workingDirectory, fileName);
+
+    Core::FileChangeBlocker fcb(fileInfo.filePath());
+    fcb.setModifiedReload(true);
+
+    QString errorMessage;
+    if (!m_gitClient->synchronousCheckout(workingDirectory, QStringList() << fileName, &errorMessage))
+        m_outputWindow->append(errorMessage);
+
 }
 
 void GitPlugin::undoProjectChanges()
@@ -583,6 +590,9 @@ void GitPlugin::unstageFile()
 void GitPlugin::revertFile()
 {
     const QFileInfo fileInfo = currentFile();
+    Core::FileChangeBlocker fcb(fileInfo.filePath());
+    fcb.setModifiedReload(true);
+
     m_gitClient->revert(QStringList(fileInfo.absoluteFilePath()));
 }
 

src/plugins/perforce/perforceplugin.cpp

@@ -444,18 +444,9 @@ void PerforcePlugin::revertCurrentFile()
             return;
     }
 
-    Core::FileManager *fm = Core::ICore::instance()->fileManager();
-    QList<Core::IFile *> files = fm->managedFiles(fileName);
-    foreach (Core::IFile *file, files) {
-        fm->blockFileChange(file);
-    }
+    Core::FileChangeBlocker fcb(fileName);
+    fcb.setModifiedReload(true);
     PerforceResponse result2 = runP4Cmd(QStringList() << QLatin1String("revert") << fileName, QStringList(), CommandToWindow|StdOutToWindow|StdErrToWindow|ErrorToWindow);
-    Core::IFile::ReloadBehavior tempBehavior =
-            Core::IFile::ReloadAll;
-    foreach (Core::IFile *file, files) {
-        file->modified(&tempBehavior);
-        fm->unblockFileChange(file);
-    }
 }
 
 void PerforcePlugin::diffCurrentFile()

src/plugins/subversion/subversionplugin.cpp

@@ -611,10 +611,8 @@ void SubversionPlugin::revertCurrentFile()
                              QMessageBox::Yes, QMessageBox::No) == QMessageBox::No)
         return;
 
-    Core::FileManager *fm = Core::ICore::instance()->fileManager();
-    QList<Core::IFile *> files = fm->managedFiles(file);
-    foreach (Core::IFile *file, files)
-        fm->blockFileChange(file);
+
+    Core::FileChangeBlocker fcb(file);
 
     // revert
     args.clear();
@@ -622,16 +620,8 @@ void SubversionPlugin::revertCurrentFile()
     args.append(file);
 
     const SubversionResponse revertResponse = runSvn(args, subversionShortTimeOut, true);
-    if (revertResponse.error) {
-        foreach (Core::IFile *file, files)
-            fm->unblockFileChange(file);
-        return;
-    }
-
-    Core::IFile::ReloadBehavior tempBehavior = Core::IFile::ReloadAll;
-    foreach (Core::IFile *file, files) {
-        file->modified(&tempBehavior);
-        fm->unblockFileChange(file);
+    if (!revertResponse.error) {
+        fcb.setModifiedReload(true);
     }
 }