move the "cannot undo" warning to the search result pane

this is where it belongs, rather than into some arbitrary editor.
as a nice side effect, now not only the "rename symbol", but also the
global search&replace has such a warning.

src/plugins/cppeditor/cppeditor.cpp

@@ -68,7 +68,6 @@
 #include <cpptools/cppcodeformatter.h>
 
 #include <coreplugin/icore.h>
-#include <coreplugin/infobar.h>
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/actioncontainer.h>
 #include <coreplugin/actionmanager/command.h>
@@ -680,20 +679,9 @@ void CPPEditorWidget::renameUsagesNow(const QString &replacement)
     info.snapshot.insert(info.doc);
 
     CanonicalSymbol cs(this, info);
-    if (Symbol *canonicalSymbol = cs(textCursor())) {
-        if (canonicalSymbol->identifier() != 0) {
-            if (showWarningMessage()) {
-                // FIXME: abuse
-                Core::InfoBarEntry info(QLatin1String("CppEditor.Rename"),
-                                        tr("This change cannot be undone."));
-                info.setCustomButtonInfo(tr("Yes, I know what I am doing."),
-                                         this, SLOT(hideRenameNotification()));
-                file()->infoBar()->addInfo(info);
-            }
-
+    if (Symbol *canonicalSymbol = cs(textCursor()))
+        if (canonicalSymbol->identifier() != 0)
             m_modelManager->renameUsages(canonicalSymbol, cs.context(), replacement);
-        }
-    }
 }
 
 void CPPEditorWidget::renameUsages()
@@ -701,35 +689,6 @@ void CPPEditorWidget::renameUsages()
     renameUsagesNow();
 }
 
-bool CPPEditorWidget::showWarningMessage() const
-{
-    // Restore settings
-    QSettings *settings = Core::ICore::instance()->settings();
-    settings->beginGroup(QLatin1String("CppEditor"));
-    settings->beginGroup(QLatin1String("Rename"));
-    const bool showWarningMessage = settings->value(QLatin1String("ShowWarningMessage"), true).toBool();
-    settings->endGroup();
-    settings->endGroup();
-    return showWarningMessage;
-}
-
-void CPPEditorWidget::setShowWarningMessage(bool showWarningMessage)
-{
-    // Restore settings
-    QSettings *settings = Core::ICore::instance()->settings();
-    settings->beginGroup(QLatin1String("CppEditor"));
-    settings->beginGroup(QLatin1String("Rename"));
-    settings->setValue(QLatin1String("ShowWarningMessage"), showWarningMessage);
-    settings->endGroup();
-    settings->endGroup();
-}
-
-void CPPEditorWidget::hideRenameNotification()
-{
-    setShowWarningMessage(false);
-    file()->infoBar()->removeInfo(QLatin1String("CppEditor.Rename"));
-}
-
 void CPPEditorWidget::markSymbolsNow()
 {
     if (m_references.isCanceled())

src/plugins/cppeditor/cppeditor.h

@@ -202,7 +202,6 @@ public Q_SLOTS:
     void renameUsages();
     void findUsages();
     void renameUsagesNow(const QString &replacement = QString());
-    void hideRenameNotification();
     void rehighlight(bool force = false);
 
 protected:
@@ -237,9 +236,6 @@ private Q_SLOTS:
     void performQuickFix(int index);
 
 private:
-    bool showWarningMessage() const;
-    void setShowWarningMessage(bool showWarningMessage);
-
     void markSymbols(const QTextCursor &tc, const SemanticInfo &info);
     bool sortedOutline() const;
     CPlusPlus::Symbol *findDefinition(CPlusPlus::Symbol *symbol, const CPlusPlus::Snapshot &snapshot) const;

src/plugins/cpptools/cppfindreferences.cpp

@@ -242,7 +242,8 @@ void CppFindReferences::renameUsages(CPlusPlus::Symbol *symbol, const CPlusPlus:
         const QString textToReplace = replacement.isEmpty()
                 ? QString::fromUtf8(id->chars(), id->size()) : replacement;
 
-        Find::SearchResult *search = _resultWindow->startNewSearch(Find::SearchResultWindow::SearchAndReplace);
+        Find::SearchResult *search = _resultWindow->startNewSearch(
+                Find::SearchResultWindow::SearchAndReplace, QLatin1String("CppEditor"));
         _resultWindow->setTextToReplace(textToReplace);
 
         connect(search, SIGNAL(activated(Find::SearchResultItem)),
@@ -280,10 +281,6 @@ void CppFindReferences::findAll_helper(Symbol *symbol, const LookupContext &cont
 void CppFindReferences::onReplaceButtonClicked(const QString &text,
                                                const QList<Find::SearchResultItem> &items)
 {
-    // FIXME: abuse
-    Core::EditorManager::instance()->currentEditor()->file()->infoBar()->removeInfo(
-            QLatin1String("CppEditor.Rename"));
-
     const QStringList fileNames = TextEditor::BaseFileFind::replaceAll(text, items);
     if (!fileNames.isEmpty()) {
         _modelManager->updateSourceFiles(fileNames);

src/plugins/find/searchresultwindow.cpp

@@ -38,6 +38,7 @@
 
 #include <aggregation/aggregate.h>
 #include <coreplugin/icore.h>
+#include <coreplugin/infobar.h>
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/command.h>
 #include <coreplugin/coreconstants.h>
@@ -232,6 +233,9 @@ namespace Internal {
         int m_itemCount;
         bool m_isShowingReplaceUI;
         bool m_focusReplaceEdit;
+        QString m_dontAskAgainGroup;
+        Core::InfoBar m_infoBar;
+        Core::InfoBarDisplay m_infoBarDisplay;
     };
 
     SearchResultWindowPrivate::SearchResultWindowPrivate()
@@ -349,6 +353,9 @@ SearchResultWindow::SearchResultWindow() : d(new SearchResultWindowPrivate)
     vlay->addWidget(d->m_noMatchesFoundDisplay);
     vlay->addWidget(d->m_searchResultTreeView);
 
+    d->m_infoBarDisplay.setTarget(vlay, 0);
+    d->m_infoBarDisplay.setInfoBar(&d->m_infoBar);
+
     d->m_expandCollapseButton = new QToolButton(d->m_widget);
     d->m_expandCollapseButton->setAutoRaise(true);
 
@@ -446,8 +453,10 @@ void SearchResultWindow::handleReplaceButton()
     QTC_ASSERT(d->m_currentSearch, return);
     // check if button is actually enabled, because this is also triggered
     // by pressing return in replace line edit
-    if (d->m_replaceButton->isEnabled())
+    if (d->m_replaceButton->isEnabled()) {
+        d->m_infoBar.clear();
         d->m_currentSearch->replaceButtonClicked(d->m_replaceTextEdit->text(), checkedItems());
+    }
 }
 
 /*!
@@ -500,19 +509,22 @@ QList<QWidget*> SearchResultWindow::toolBarWidgets() const
 }
 
 /*!
-    \fn SearchResult *SearchResultWindow::startNewSearch(SearchMode searchOrSearchAndReplace)
     \brief Tells the search results window to start a new search.
 
     This will clear the contents of the previous search and initialize the UI
     with regard to showing the replace UI or not (depending on the search mode
     in \a searchOrSearchAndReplace).
+    If \a cfgGroup is not empty, it will be used for storing the "do not ask again"
+    setting of a "this change cannot be undone" warning (which is implicitly requested
+    by passing a non-empty group).
     Returns a SearchResult object that is used for signaling user interaction
     with the results of this search.
 */
-SearchResult *SearchResultWindow::startNewSearch(SearchMode searchOrSearchAndReplace)
+SearchResult *SearchResultWindow::startNewSearch(SearchMode searchOrSearchAndReplace, const QString &cfgGroup)
 {
     clearContents();
     setShowReplaceUI(searchOrSearchAndReplace != SearchOnly);
+    d->m_dontAskAgainGroup = cfgGroup;
     delete d->m_currentSearch;
     d->m_currentSearch = new SearchResult;
     return d->m_currentSearch;
@@ -544,6 +556,7 @@ void SearchResultWindow::clearContents()
     d->m_searchResultTreeView->clear();
     d->m_itemCount = 0;
     d->m_noMatchesFoundDisplay->hide();
+    d->m_infoBar.clear();
     navigateStateChanged();
 }
 
@@ -675,6 +688,12 @@ void SearchResultWindow::addResults(QList<SearchResultItem> &items, AddMode mode
     d->m_itemCount += items.size();
     d->m_searchResultTreeView->addResults(items, mode);
     if (firstItems) {
+        if (!d->m_dontAskAgainGroup.isEmpty() && showWarningMessage()) {
+            Core::InfoBarEntry info("warninglabel", tr("This change cannot be undone."));
+            info.setCustomButtonInfo(tr("Do not warn again"), this, SLOT(hideNoUndoWarning()));
+            d->m_infoBar.addInfo(info);
+        }
+
         d->m_replaceTextEdit->setEnabled(true);
         // We didn't have an item before, set the focus to the search widget
         d->m_focusReplaceEdit = true;
@@ -685,6 +704,35 @@ void SearchResultWindow::addResults(QList<SearchResultItem> &items, AddMode mode
     }
 }
 
+bool SearchResultWindow::showWarningMessage() const
+{
+    // Restore settings
+    QSettings *settings = Core::ICore::instance()->settings();
+    settings->beginGroup(d->m_dontAskAgainGroup);
+    settings->beginGroup(QLatin1String("Rename"));
+    const bool showWarningMessage = settings->value(QLatin1String("ShowWarningMessage"), true).toBool();
+    settings->endGroup();
+    settings->endGroup();
+    return showWarningMessage;
+}
+
+void SearchResultWindow::setShowWarningMessage(bool showWarningMessage)
+{
+    // Restore settings
+    QSettings *settings = Core::ICore::instance()->settings();
+    settings->beginGroup(d->m_dontAskAgainGroup);
+    settings->beginGroup(QLatin1String("Rename"));
+    settings->setValue(QLatin1String("ShowWarningMessage"), showWarningMessage);
+    settings->endGroup();
+    settings->endGroup();
+}
+
+void SearchResultWindow::hideNoUndoWarning()
+{
+    setShowWarningMessage(false);
+    d->m_infoBar.clear();
+}
+
 /*!
     \fn void SearchResultWindow::handleExpandCollapseToolButton(bool checked)
     \internal

src/plugins/find/searchresultwindow.h

@@ -138,9 +138,11 @@ public:
     QString textToReplace() const;
 
     // search result object only lives till next startnewsearch call
-    SearchResult *startNewSearch(SearchMode searchOrSearchAndReplace = SearchOnly);
+    SearchResult *startNewSearch(SearchMode searchOrSearchAndReplace = SearchOnly,
+                                 const QString &cfgGroup = QString());
 
     void addResults(QList<SearchResultItem> &items, AddMode mode);
+
 public slots:
     void clearContents();
     void addResult(const QString &fileName, int lineNumber, const QString &lineText,
@@ -152,12 +154,15 @@ private slots:
     void handleJumpToSearchResult(const SearchResultItem &item);
     void handleReplaceButton();
     void showNoMatchesFound();
+    void hideNoUndoWarning();
 
 private:
     void setShowReplaceUI(bool show);
     void readSettings();
     void writeSettings();
     QList<SearchResultItem> checkedItems() const;
+    bool showWarningMessage() const;
+    void setShowWarningMessage(bool showWarningMessage);
 
     Internal::SearchResultWindowPrivate *d;
     static SearchResultWindow *m_instance;

src/plugins/texteditor/basefilefind.cpp

@@ -132,7 +132,8 @@ void BaseFileFind::replaceAll(const QString &txt, Find::FindFlags findFlags)
     if (m_filterCombo)
         updateComboEntries(m_filterCombo, true);
     m_watcher.setFuture(QFuture<FileSearchResultList>());
-    SearchResult *result = m_resultWindow->startNewSearch(SearchResultWindow::SearchAndReplace);
+    SearchResult *result = m_resultWindow->startNewSearch(
+            SearchResultWindow::SearchAndReplace, QLatin1String("TextEditor"));
     connect(result, SIGNAL(activated(Find::SearchResultItem)), this, SLOT(openEditor(Find::SearchResultItem)));
     connect(result, SIGNAL(replaceButtonClicked(QString,QList<Find::SearchResultItem>)),
             this, SLOT(doReplace(QString,QList<Find::SearchResultItem>)));