Clang: Make diagnostic tooltips consistent

Fix that triggering a diagnostic tooltip from the diagnostic
location/range itself (underlined text) did not show the icon on the
left and the actions/toolbuttons on the right in the tooltip.

Instead of showing the tooltip content itself, request the tooltip for
the corresponding text mark to get the extra decoration and actions.

Change-Id: I5e94aca117a761f7a798d4f4b33db6e386e54d84
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

6 files changed, 31 insertions, 100 deletions

diff --git a/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp b/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
index 72049242dc..8bc0b925c2 100644
--- a/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
+++ b/src/plugins/clangcodemodel/clangdiagnosticmanager.cpp
@@ -210,36 +210,6 @@ bool isDiagnosticAtLocation(const ClangBackEnd::DiagnosticContainer &diagnostic,
     return isDiagnosticRelatedToLocation(diagnostic, {cursorRange}, line, column);
 }
 
-QVector<ClangBackEnd::DiagnosticContainer>
-filteredDiagnosticsAtLocation(const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
-                              uint line,
-                              uint column,
-                              QTextDocument *textDocument)
-{
-    QVector<ClangBackEnd::DiagnosticContainer> filteredDiagnostics;
-
-    foreach (const auto &diagnostic, diagnostics) {
-        if (isDiagnosticAtLocation(diagnostic, line, column, textDocument))
-            filteredDiagnostics.append(diagnostic);
-    }
-
-    return filteredDiagnostics;
-}
-
-bool editorDocumentProcessorHasDiagnosticAt(
-        const QVector<ClangBackEnd::DiagnosticContainer> &diagnostics,
-        uint line,
-        uint column,
-        QTextDocument *textDocument)
-{
-    foreach (const auto &diagnostic, diagnostics) {
-        if (isDiagnosticAtLocation(diagnostic, line, column, textDocument))
-            return true;
-    }
-
-    return false;
-}
-
 QTextCursor cursorAtLastPositionOfLine(QTextDocument *textDocument, int lineNumber)
 {
     const QTextBlock textBlock = textDocument->findBlockByNumber(lineNumber - 1);
@@ -399,24 +369,16 @@ TextEditor::RefactorMarkers ClangDiagnosticManager::takeFixItAvailableMarkers()
     return fixItAvailableMarkers;
 }
 
-bool ClangDiagnosticManager::hasDiagnosticsAt(uint line, uint column) const
+TextEditor::TextMarks ClangDiagnosticManager::diagnosticTextMarksAt(uint line, uint column) const
 {
-    QTextDocument *textDocument = m_textDocument->document();
-
-    return editorDocumentProcessorHasDiagnosticAt(m_errorDiagnostics, line, column, textDocument)
-            || editorDocumentProcessorHasDiagnosticAt(m_warningDiagnostics, line, column, textDocument);
-}
+    QList<TextEditor::TextMark *> textMarks;
 
-QVector<ClangBackEnd::DiagnosticContainer>
-ClangDiagnosticManager::diagnosticsAt(uint line, uint column) const
-{
-    QTextDocument *textDocument = m_textDocument->document();
-
-    QVector<ClangBackEnd::DiagnosticContainer> diagnostics;
-    diagnostics += filteredDiagnosticsAtLocation(m_errorDiagnostics, line, column, textDocument);
-    diagnostics += filteredDiagnosticsAtLocation(m_warningDiagnostics, line, column, textDocument);
+    for (ClangTextMark *textMark : m_clangTextMarks) {
+        if (isDiagnosticAtLocation(textMark->diagnostic(), line, column, m_textDocument->document()))
+            textMarks << textMark;
+    }
 
-    return diagnostics;
+    return textMarks;
 }
 
 void ClangDiagnosticManager::invalidateDiagnostics()
diff --git a/src/plugins/clangcodemodel/clangdiagnosticmanager.h b/src/plugins/clangcodemodel/clangdiagnosticmanager.h
index d0c31bf68b..2996936ed0 100644
--- a/src/plugins/clangcodemodel/clangdiagnosticmanager.h
+++ b/src/plugins/clangcodemodel/clangdiagnosticmanager.h
@@ -57,8 +57,7 @@ public:
     QList<QTextEdit::ExtraSelection> takeExtraSelections();
     TextEditor::RefactorMarkers takeFixItAvailableMarkers();
 
-    bool hasDiagnosticsAt(uint line, uint column) const;
-    QVector<ClangBackEnd::DiagnosticContainer> diagnosticsAt(uint line, uint column) const;
+    QList<TextEditor::TextMark *> diagnosticTextMarksAt(uint line, uint column) const;
 
     void invalidateDiagnostics();
     void clearDiagnosticsWithFixIts();
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
index 8e1d06da6c..40d7e4e63f 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp
@@ -48,7 +48,6 @@
 #include <cpptools/cppworkingcopy.h>
 #include <cpptools/editordocumenthandle.h>
 
-#include <texteditor/displaysettings.h>
 #include <texteditor/fontsettings.h>
 #include <texteditor/texteditor.h>
 #include <texteditor/texteditorconstants.h>
@@ -292,27 +291,6 @@ TextEditor::QuickFixOperations ClangEditorDocumentProcessor::extraRefactoringOpe
     return extractor.extract(assistInterface.fileName(), currentLine(assistInterface));
 }
 
-bool ClangEditorDocumentProcessor::hasDiagnosticsAt(uint line, uint column) const
-{
-    return m_diagnosticManager.hasDiagnosticsAt(line, column);
-}
-
-void ClangEditorDocumentProcessor::addDiagnosticToolTipToLayout(uint line,
-                                                                uint column,
-                                                                QLayout *target) const
-{
-    using Internal::ClangDiagnosticWidget;
-
-    const QVector<ClangBackEnd::DiagnosticContainer> diagnostics
-        = m_diagnosticManager.diagnosticsAt(line, column);
-
-    target->addWidget(
-        ClangDiagnosticWidget::createWidget(diagnostics, ClangDiagnosticWidget::ToolTip));
-    auto link = TextEditor::DisplaySettings::createAnnotationSettingsLink();
-    target->addWidget(link);
-    target->setAlignment(link, Qt::AlignRight);
-}
-
 void ClangEditorDocumentProcessor::editorDocumentTimerRestarted()
 {
     m_updateBackendDocumentTimer.stop(); // Wait for the next call to run().
@@ -323,6 +301,12 @@ void ClangEditorDocumentProcessor::invalidateDiagnostics()
     m_diagnosticManager.invalidateDiagnostics();
 }
 
+TextEditor::TextMarks ClangEditorDocumentProcessor::diagnosticTextMarksAt(uint line,
+                                                                          uint column) const
+{
+    return m_diagnosticManager.diagnosticTextMarksAt(line, column);
+}
+
 void ClangEditorDocumentProcessor::setParserConfig(
         const CppTools::BaseEditorDocumentParser::Configuration &config)
 {
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
index a7da1bb2e1..8e0ee003d3 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
@@ -83,8 +83,8 @@ public:
     extraRefactoringOperations(const TextEditor::AssistInterface &assistInterface) override;
 
     void invalidateDiagnostics() override;
-    bool hasDiagnosticsAt(uint line, uint column) const override;
-    void addDiagnosticToolTipToLayout(uint line, uint column, QLayout *target) const override;
+
+    TextEditor::TextMarks diagnosticTextMarksAt(uint line, uint column) const;
 
     void editorDocumentTimerRestarted() override;
 
diff --git a/src/plugins/clangcodemodel/clanghoverhandler.cpp b/src/plugins/clangcodemodel/clanghoverhandler.cpp
index da9f974adb..58f414d9f1 100644
--- a/src/plugins/clangcodemodel/clanghoverhandler.cpp
+++ b/src/plugins/clangcodemodel/clanghoverhandler.cpp
@@ -25,8 +25,9 @@
 
 #include "clanghoverhandler.h"
 
+#include "clangeditordocumentprocessor.h"
+
 #include <coreplugin/helpmanager.h>
-#include <cpptools/baseeditordocumentprocessor.h>
 #include <cpptools/cppmodelmanager.h>
 #include <cpptools/cpptoolsreuse.h>
 #include <cpptools/editordocumenthandle.h>
@@ -61,32 +62,17 @@ static CppTools::BaseEditorDocumentProcessor *editorDocumentProcessor(TextEditor
     return nullptr;
 }
 
-static bool editorDocumentProcessorHasDiagnosticAt(TextEditorWidget *editorWidget, int pos)
+static TextMarks diagnosticTextMarksAt(TextEditorWidget *editorWidget, int position)
 {
-    if (CppTools::BaseEditorDocumentProcessor *processor = editorDocumentProcessor(editorWidget)) {
-        int line, column;
-        if (Utils::Text::convertPosition(editorWidget->document(), pos, &line, &column))
-            return processor->hasDiagnosticsAt(line, column);
-    }
+    const auto processor = qobject_cast<ClangEditorDocumentProcessor *>(
+        editorDocumentProcessor(editorWidget));
+    QTC_ASSERT(processor, return TextMarks());
 
-    return false;
-}
+    int line, column;
+    const bool ok = Utils::Text::convertPosition(editorWidget->document(), position, &line, &column);
+    QTC_ASSERT(ok, return TextMarks());
 
-static void processWithEditorDocumentProcessor(TextEditorWidget *editorWidget,
-                                               const QPoint &point,
-                                               int position,
-                                               const Core::HelpItem &helpItem)
-{
-    if (CppTools::BaseEditorDocumentProcessor *processor = editorDocumentProcessor(editorWidget)) {
-        int line, column;
-        if (Utils::Text::convertPosition(editorWidget->document(), position, &line, &column)) {
-            auto layout = new QVBoxLayout;
-            layout->setContentsMargins(0, 0, 0, 0);
-            layout->setSpacing(2);
-            processor->addDiagnosticToolTipToLayout(line, column, layout);
-            Utils::ToolTip::show(point, layout, editorWidget, qVariantFromValue(helpItem));
-        }
-    }
+    return processor->diagnosticTextMarksAt(line, column);
 }
 
 static QFuture<CppTools::ToolTipInfo> editorDocumentHandlesToolTipInfo(
@@ -189,7 +175,7 @@ void ClangHoverHandler::identifyMatch(TextEditorWidget *editorWidget,
     m_cursorPosition = -1;
 
     // Check for diagnostics (sync)
-    if (!isContextHelpRequest() && editorDocumentProcessorHasDiagnosticAt(editorWidget, pos)) {
+    if (!isContextHelpRequest() && !diagnosticTextMarksAt(editorWidget, pos).isEmpty()) {
         qCDebug(hoverLog) << "Checking for diagnostic at" << pos;
         setPriority(Priority_Diagnostic);
         m_cursorPosition = pos;
@@ -275,10 +261,8 @@ void ClangHoverHandler::operateTooltip(TextEditor::TextEditorWidget *editorWidge
                                        const QPoint &point)
 {
     if (priority() == Priority_Diagnostic) {
-        processWithEditorDocumentProcessor(editorWidget,
-                                           point,
-                                           m_cursorPosition,
-                                           lastHelpItemIdentified());
+        const TextMarks textMarks = diagnosticTextMarksAt(editorWidget, m_cursorPosition);
+        editorWidget->showTextMarksToolTip(point, textMarks);
         return;
     }
 
diff --git a/src/plugins/clangcodemodel/clangtextmark.h b/src/plugins/clangcodemodel/clangtextmark.h
index 1301cd200b..00cadfb5c8 100644
--- a/src/plugins/clangcodemodel/clangtextmark.h
+++ b/src/plugins/clangcodemodel/clangtextmark.h
@@ -44,7 +44,9 @@ public:
                   const RemovedFromEditorHandler &removedHandler,
                   bool fullVisualization);
 
+    ClangBackEnd::DiagnosticContainer diagnostic() const { return m_diagnostic; }
     void updateIcon(bool valid = true);
+
 private:
     bool addToolTipContent(QLayout *target) const override;
     void removedFromEditor() override;