Disable the find usage and symbol renaming while indexing is done.

Reviewed-by: Roberto Raggi

src/plugins/coreplugin/progressmanager/progressmanager.cpp

@@ -57,17 +57,22 @@ void ProgressManagerPrivate::init()
 
 void ProgressManagerPrivate::cancelTasks(const QString &type)
 {
+    bool found = false;
     QMap<QFutureWatcher<void> *, QString>::iterator task = m_runningTasks.begin();
     while (task != m_runningTasks.end()) {
         if (task.value() != type) {
             ++task;
             continue;
         }
+        found = true;
         disconnect(task.key(), SIGNAL(finished()), this, SLOT(taskFinished()));
         task.key()->cancel();
         delete task.key();
         task = m_runningTasks.erase(task);
     }
+    if (found) {
+        emit allTasksFinished(type);
+    }
 }
 
 void ProgressManagerPrivate::cancelAllRunningTasks()
@@ -88,6 +93,7 @@ FutureProgress *ProgressManagerPrivate::addTask(const QFuture<void> &future, con
     m_runningTasks.insert(watcher, type);
     connect(watcher, SIGNAL(finished()), this, SLOT(taskFinished()));
     watcher->setFuture(future);
+    emit taskStarted(type);
     return m_progressView->addTask(future, title, type, persistency);
 }
 
@@ -101,6 +107,11 @@ void ProgressManagerPrivate::taskFinished()
     QObject *taskObject = sender();
     QTC_ASSERT(taskObject, return);
     QFutureWatcher<void> *task = static_cast<QFutureWatcher<void> *>(taskObject);
+    QString type = m_runningTasks.value(task);
     m_runningTasks.remove(task);
     delete task;
+
+    if (!m_runningTasks.values().contains(type)) {
+        emit allTasksFinished(type);
+    }
 }

src/plugins/coreplugin/progressmanager/progressmanager.h

@@ -51,6 +51,10 @@ public:
 
 public slots:
     virtual void cancelTasks(const QString &type) = 0;
+
+signals:
+    void taskStarted(const QString &type);
+    void allTasksFinished(const QString &type);
 };
 
 } // namespace Core

src/plugins/cppeditor/cppplugin.cpp

@@ -43,6 +43,7 @@
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/command.h>
 #include <coreplugin/editormanager/editormanager.h>
+#include <coreplugin/progressmanager/progressmanager.h>
 #include <texteditor/completionsupport.h>
 #include <texteditor/fontsettings.h>
 #include <texteditor/storagesettings.h>
@@ -55,7 +56,6 @@
 #include <QtCore/QFileInfo>
 #include <QtCore/QSettings>
 #include <QtGui/QMenu>
-#include <QtGui/QAction>
 
 using namespace CppEditor::Internal;
 
@@ -211,18 +211,18 @@ bool CppPlugin::initialize(const QStringList & /*arguments*/, QString *errorMess
     contextMenu->addAction(cmd);
     am->actionContainer(CppTools::Constants::M_TOOLS_CPP)->addAction(cmd);
 
-    QAction *findUsagesAction = new QAction(tr("Find Usages"), this);
-    cmd = am->registerAction(findUsagesAction, Constants::FIND_USAGES, context);
+    m_findUsagesAction = new QAction(tr("Find Usages"), this);
+    cmd = am->registerAction(m_findUsagesAction, Constants::FIND_USAGES, context);
     cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Shift+U")));
-    connect(findUsagesAction, SIGNAL(triggered()), this, SLOT(findUsages()));
+    connect(m_findUsagesAction, SIGNAL(triggered()), this, SLOT(findUsages()));
     contextMenu->addAction(cmd);
     am->actionContainer(CppTools::Constants::M_TOOLS_CPP)->addAction(cmd);
 
-    QAction *renameSymbolUnderCursorAction = new QAction(tr("Rename Symbol under Cursor"), this);
-    cmd = am->registerAction(renameSymbolUnderCursorAction,
+    m_renameSymbolUnderCursorAction = new QAction(tr("Rename Symbol under Cursor"), this);
+    cmd = am->registerAction(m_renameSymbolUnderCursorAction,
         Constants::RENAME_SYMBOL_UNDER_CURSOR, context);
     cmd->setDefaultKeySequence(QKeySequence("CTRL+SHIFT+R"));
-    connect(renameSymbolUnderCursorAction, SIGNAL(triggered()), this, SLOT(renameSymbolUnderCursor()));
+    connect(m_renameSymbolUnderCursorAction, SIGNAL(triggered()), this, SLOT(renameSymbolUnderCursor()));
     contextMenu->addAction(cmd);
     am->actionContainer(CppTools::Constants::M_TOOLS_CPP)->addAction(cmd);
 
@@ -244,7 +244,10 @@ bool CppPlugin::initialize(const QStringList & /*arguments*/, QString *errorMess
     cmd = am->command(TextEditor::Constants::UN_COMMENT_SELECTION);
     contextMenu->addAction(cmd);
 
-
+    connect(core->progressManager(), SIGNAL(taskStarted(QString)),
+            this, SLOT(onTaskStarted(QString)));
+    connect(core->progressManager(), SIGNAL(allTasksFinished(QString)),
+            this, SLOT(onAllTasksFinished(QString)));
     readSettings();
     return true;
 }
@@ -300,4 +303,20 @@ void CppPlugin::findUsages()
         editor->findUsages();
 }
 
+void CppPlugin::onTaskStarted(const QString &type)
+{
+    if (type == CppTools::Constants::TASK_INDEX) {
+        m_renameSymbolUnderCursorAction->setEnabled(false);
+        m_findUsagesAction->setEnabled(false);
+    }
+}
+
+void CppPlugin::onAllTasksFinished(const QString &type)
+{
+    if (type == CppTools::Constants::TASK_INDEX) {
+        m_renameSymbolUnderCursorAction->setEnabled(true);
+        m_findUsagesAction->setEnabled(true);
+    }
+}
+
 Q_EXPORT_PLUGIN(CppPlugin)

src/plugins/cppeditor/cppplugin.h

@@ -30,12 +30,13 @@
 #ifndef CPPPLUGIN_H
 #define CPPPLUGIN_H
 
-#include <QtCore/QtPlugin>
-#include <QtCore/QStringList>
-
 #include <extensionsystem/iplugin.h>
 #include <coreplugin/editormanager/ieditorfactory.h>
 
+#include <QtCore/QtPlugin>
+#include <QtCore/QStringList>
+#include <QtGui/QAction>
+
 namespace TextEditor {
 class TextEditorActionHandler;
 } // namespace TextEditor
@@ -74,6 +75,8 @@ private slots:
     void switchDeclarationDefinition();
     void jumpToDefinition();
     void renameSymbolUnderCursor();
+    void onTaskStarted(const QString &type);
+    void onAllTasksFinished(const QString &type);
     void findUsages();
 
 private:
@@ -85,6 +88,8 @@ private:
 
     TextEditor::TextEditorActionHandler *m_actionHandler;
     bool m_sortedMethodOverview;
+    QAction *m_renameSymbolUnderCursorAction;
+    QAction *m_findUsagesAction;
 };
 
 class CppEditorFactory : public Core::IEditorFactory