TextEditor: Add type hierarchy infrastructure

We want to support more than one back-end in the future.

Task-number: QTCREATORBUG-28116
Change-Id: I72020c94b36072a297e13f44130e5e2482922cd4
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/cppeditor/cppeditorconstants.h

@@ -22,9 +22,6 @@ const char M_REFACTORING_MENU_INSERTION_POINT[] = "CppEditor.RefactorGroup";
 const char UPDATE_CODEMODEL[] = "CppEditor.UpdateCodeModel";
 const char INSPECT_CPP_CODEMODEL[] = "CppEditor.InspectCppCodeModel";
 
-const char TYPE_HIERARCHY_ID[] = "CppEditor.TypeHierarchy";
-const char OPEN_TYPE_HIERARCHY[] = "CppEditor.OpenTypeHierarchy";
-
 const char INCLUDE_HIERARCHY_ID[] = "CppEditor.IncludeHierarchy";
 const char OPEN_INCLUDE_HIERARCHY[] = "CppEditor.OpenIncludeHierarchy";
 

src/plugins/cppeditor/cppeditorplugin.cpp

@@ -144,6 +144,7 @@ public:
                                 | TextEditorActionHandler::FollowSymbolUnderCursor
                                 | TextEditorActionHandler::FollowTypeUnderCursor
                                 | TextEditorActionHandler::RenameSymbol
+                                | TextEditorActionHandler::TypeHierarchy
                                 | TextEditorActionHandler::FindUsage);
     }
 };
@@ -358,6 +359,7 @@ void CppEditorPlugin::addPerSymbolActions()
 
     setupCppTypeHierarchy();
 
+    addSymbolActionToMenus(TextEditor::Constants::OPEN_TYPE_HIERARCHY);
     addSymbolActionToMenus(TextEditor::Constants::OPEN_CALL_HIERARCHY);
 
     // Refactoring sub-menu

src/plugins/cppeditor/cpptypehierarchy.cpp

@@ -4,6 +4,7 @@
 #include "cpptypehierarchy.h"
 
 #include "cppeditorconstants.h"
+#include "cppeditordocument.h"
 #include "cppeditortr.h"
 #include "cppeditorwidget.h"
 #include "cppelementevaluator.h"
@@ -11,11 +12,10 @@
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/find/itemviewfind.h>
-#include <coreplugin/inavigationwidgetfactory.h>
-#include <coreplugin/navigationwidget.h>
 #include <coreplugin/progressmanager/progressmanager.h>
 
 #include <texteditor/texteditor.h>
+#include <texteditor/typehierarchy.h>
 
 #include <utils/algorithm.h>
 #include <utils/delegates.h>
@@ -53,7 +53,7 @@ public:
     QMimeData *mimeData(const QModelIndexList &indexes) const override;
 };
 
-class CppTypeHierarchyWidget : public QWidget
+class CppTypeHierarchyWidget : public TextEditor::TypeHierarchyWidget
 {
 public:
     CppTypeHierarchyWidget();
@@ -61,6 +61,8 @@ public:
     void perform();
 
 private:
+    void reload() override { perform(); }
+
     void displayHierarchy();
     typedef QList<CppClass> CppClass::*HierarchyMember;
     void performFromExpression(const QString &expression, const FilePath &filePath);
@@ -87,6 +89,7 @@ private:
     ProgressIndicator *m_progressIndicator = nullptr;
     QString m_oldClass;
     bool m_showOldClass = false;
+    int m_runningIndexers = 0;
 };
 
 enum ItemRole {
@@ -197,10 +200,22 @@ CppTypeHierarchyWidget::CppTypeHierarchyWidget()
 
     connect(&m_futureWatcher, &QFutureWatcher<void>::finished,
             this, &CppTypeHierarchyWidget::displayHierarchy);
+
+    connect(ProgressManager::instance(), &ProgressManager::taskStarted, [this](Id type) {
+        if (type == Constants::TASK_INDEX)
+            ++m_runningIndexers;
+    });
+    connect(ProgressManager::instance(), &ProgressManager::allTasksFinished, [this](Id type) {
+        if (type == Constants::TASK_INDEX)
+            --m_runningIndexers;
+    });
 }
 
 void CppTypeHierarchyWidget::perform()
 {
+    if (m_runningIndexers > 0)
+        return;
+
     if (m_future.isRunning())
         m_future.cancel();
 
@@ -397,47 +412,19 @@ QMimeData *CppTypeHierarchyModel::mimeData(const QModelIndexList &indexes) const
 
 // CppTypeHierarchyFactory
 
-class CppTypeHierarchyFactory final : public INavigationWidgetFactory
+class CppTypeHierarchyFactory final : public TextEditor::TypeHierarchyWidgetFactory
 {
-public:
-    CppTypeHierarchyFactory()
+    TextEditor::TypeHierarchyWidget *createWidget(Core::IEditor *editor) final
     {
-        setDisplayName(Tr::tr("Type Hierarchy"));
-        setPriority(700);
-        setId(Constants::TYPE_HIERARCHY_ID);
+        const auto textEditor = qobject_cast<TextEditor::BaseTextEditor *>(editor);
+        if (!textEditor)
+            return nullptr;
+        const auto cppDoc = qobject_cast<CppEditorDocument *>(textEditor->textDocument());
+        if (!cppDoc /* || cppDoc->usesClangd() */)
+            return nullptr;
 
-        ActionBuilder openTypeHierarchy(this, Constants::OPEN_TYPE_HIERARCHY);
-        openTypeHierarchy.setText(Tr::tr("Open Type Hierarchy"));
-        openTypeHierarchy.setContext(Context(Constants::CPPEDITOR_ID));
-        openTypeHierarchy.bindContextAction(&m_openTypeHierarchyAction);
-        openTypeHierarchy.setDefaultKeySequence(Tr::tr("Meta+Shift+T"), Tr::tr("Ctrl+Shift+T"));
-        openTypeHierarchy.addToContainers({Constants::M_TOOLS_CPP, Constants::M_CONTEXT},
-                                          Constants::G_SYMBOL);
-
-        connect(m_openTypeHierarchyAction, &QAction::triggered, this, [] {
-            NavigationWidget::activateSubWidget(Constants::TYPE_HIERARCHY_ID, Side::Left);
-        });
-
-        connect(ProgressManager::instance(), &ProgressManager::taskStarted, [this](Id type) {
-            if (type == Constants::TASK_INDEX)
-                m_openTypeHierarchyAction->setEnabled(false);
-        });
-        connect(ProgressManager::instance(), &ProgressManager::allTasksFinished, [this](Id type) {
-            if (type == Constants::TASK_INDEX)
-                m_openTypeHierarchyAction->setEnabled(true);
-        });
+        return new CppTypeHierarchyWidget;
     }
-
-    NavigationView createWidget() final
-    {
-        auto w = new CppTypeHierarchyWidget;
-        connect(m_openTypeHierarchyAction, &QAction::triggered, w, &CppTypeHierarchyWidget::perform);
-        w->perform();
-
-        return {w, {}};
-    }
-
-    QAction *m_openTypeHierarchyAction = nullptr;
 };
 
 static CppTypeHierarchyFactory &cppTypeHierarchyFactory()
@@ -446,11 +433,6 @@ static CppTypeHierarchyFactory &cppTypeHierarchyFactory()
     return theCppTypeHierarchyFactory;
 }
 
-void openCppTypeHierarchy()
-{
-    cppTypeHierarchyFactory().m_openTypeHierarchyAction->trigger();
-}
-
 void setupCppTypeHierarchy()
 {
     (void) cppTypeHierarchyFactory(); // Trigger instantiation

src/plugins/cppeditor/cpptypehierarchy.h

@@ -4,8 +4,5 @@
 #pragma once
 
 namespace CppEditor::Internal {
-
-void openCppTypeHierarchy();
 void setupCppTypeHierarchy();
-
 } // CppEditor::Internal

src/plugins/cppeditor/fileandtokenactions_test.cpp

@@ -9,7 +9,6 @@
 #include "cppinsertvirtualmethods.h"
 #include "cppmodelmanager.h"
 #include "cpptoolstestcase.h"
-#include "cpptypehierarchy.h"
 #include "cppworkingcopy.h"
 #include "projectinfo.h"
 
@@ -18,6 +17,7 @@
 #include <projectexplorer/projectexplorer.h>
 #include <texteditor/textdocument.h>
 #include <texteditor/texteditor.h>
+#include <texteditor/typehierarchy.h>
 
 #include <cplusplus/CppDocument.h>
 #include <cplusplus/TranslationUnit.h>
@@ -383,7 +383,7 @@ public:
 
 void OpenTypeHierarchyTokenAction::run(CppEditorWidget *)
 {
-    openCppTypeHierarchy();
+    TextEditor::openTypeHierarchy();
     QApplication::processEvents();
 }
 

src/plugins/texteditor/CMakeLists.txt

@@ -113,6 +113,7 @@ add_qtc_plugin(TextEditor
     textindenter.cpp textindenter.h
     textmark.cpp textmark.h
     textstyles.h
+    typehierarchy.cpp typehierarchy.h
     typingsettings.cpp typingsettings.h
 )
 

src/plugins/texteditor/texteditor.cpp

@@ -8759,6 +8759,11 @@ void TextEditorWidget::appendStandardContextMenuActions(QMenu *menu)
         if (!menu->actions().contains(action))
             menu->addAction(action);
     }
+    if (optionalActions() & TextEditorActionHandler::TypeHierarchy) {
+        const auto action = ActionManager::command(Constants::OPEN_TYPE_HIERARCHY)->action();
+        if (!menu->actions().contains(action))
+            menu->addAction(action);
+    }
 
     menu->addSeparator();
     appendMenuActionsFromContext(menu, Constants::M_STANDARDCONTEXTMENU);

src/plugins/texteditor/texteditor.qbs

@@ -137,7 +137,8 @@ QtcPlugin {
         "texteditor.cpp",
         "texteditor.h",
         "texteditor.qrc",
-        "texteditor_global.h", "texteditortr.h",
+        "texteditor_global.h",
+        "texteditortr.h",
         "texteditoractionhandler.cpp",
         "texteditoractionhandler.h",
         "texteditorconstants.cpp",
@@ -152,6 +153,8 @@ QtcPlugin {
         "textmark.cpp",
         "textmark.h",
         "textstyles.h",
+        "typehierarchy.cpp",
+        "typehierarchy.h",
         "typingsettings.cpp",
         "typingsettings.h",
     ]

src/plugins/texteditor/texteditoractionhandler.cpp

@@ -9,6 +9,7 @@
 #include "linenumberfilter.h"
 #include "texteditortr.h"
 #include "texteditorsettings.h"
+#include "typehierarchy.h"
 
 #include <aggregation/aggregate.h>
 
@@ -16,6 +17,7 @@
 #include <coreplugin/icore.h>
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/coreconstants.h>
+#include <coreplugin/navigationwidget.h>
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/actioncontainer.h>
 #include <coreplugin/actionmanager/command.h>
@@ -137,6 +139,7 @@ public:
     QAction *m_followToTypeInNextSplitAction = nullptr;
     QAction *m_findUsageAction = nullptr;
     QAction *m_openCallHierarchyAction = nullptr;
+    QAction *m_openTypeHierarchyAction = nullptr;
     QAction *m_renameSymbolAction = nullptr;
     QAction *m_jumpToFileAction = nullptr;
     QAction *m_jumpToFileInNextSplitAction = nullptr;
@@ -269,7 +272,17 @@ void TextEditorActionHandlerPrivate::createActions()
             QKeySequence(Utils::HostOsInfo::isMacHost() ? Tr::tr("Meta+E, F2") : Tr::tr("Ctrl+E, F2")).toString());
     m_openCallHierarchyAction = registerAction(OPEN_CALL_HIERARCHY,
             [] (TextEditorWidget *w) { w->openCallHierarchy(); }, true, Tr::tr("Open Call Hierarchy"));
-
+    m_openTypeHierarchyAction = registerAction(
+        OPEN_TYPE_HIERARCHY,
+        [](TextEditorWidget *) {
+            updateTypeHierarchy(
+                NavigationWidget::activateSubWidget(Constants::TYPE_HIERARCHY_FACTORY_ID,
+                                                    Side::Left));
+        },
+        true,
+        Tr::tr("Open Type Hierarchy"),
+        QKeySequence(Utils::HostOsInfo::isMacHost() ? Tr::tr("Meta+Shift+T")
+                                                    : Tr::tr("Ctrl+Shift+T")));
     registerAction(VIEW_PAGE_UP,
             [] (TextEditorWidget *w) { w->viewPageUp(); }, true, Tr::tr("Move the View a Page Up and Keep the Cursor Position"),
             QKeySequence(Tr::tr("Ctrl+PgUp")));
@@ -550,6 +563,8 @@ void TextEditorActionHandlerPrivate::updateOptionalActions()
         optionalActions & TextEditorActionHandler::RenameSymbol);
     m_openCallHierarchyAction->setEnabled(
         optionalActions & TextEditorActionHandler::CallHierarchy);
+    m_openTypeHierarchyAction->setEnabled(
+        optionalActions & TextEditorActionHandler::TypeHierarchy);
 
     bool formatEnabled = (optionalActions & TextEditorActionHandler::Format)
                          && m_currentEditorWidget && !m_currentEditorWidget->isReadOnly();

src/plugins/texteditor/texteditoractionhandler.h

@@ -38,7 +38,8 @@ public:
         JumpToFileUnderCursor = 32,
         RenameSymbol = 64,
         FindUsage = 128,
-        CallHierarchy = 256
+        CallHierarchy = 256,
+        TypeHierarchy = 512,
     };
     using TextEditorWidgetResolver = std::function<TextEditorWidget *(Core::IEditor *)>;
 

src/plugins/texteditor/texteditorconstants.h

@@ -212,6 +212,8 @@ const char FIND_USAGES[] = "TextEditor.FindUsages";
 // moved from CppEditor to TextEditor avoid breaking the setting by using the old key
 const char RENAME_SYMBOL[] = "CppEditor.RenameSymbolUnderCursor";
 const char OPEN_CALL_HIERARCHY[] = "TextEditor.OpenCallHierarchy";
+const char OPEN_TYPE_HIERARCHY[] = "TextEditor.OpenTypeHierarchy";
+const char TYPE_HIERARCHY_FACTORY_ID[] = "TextEditor.TypeHierarchy";
 const char JUMP_TO_FILE_UNDER_CURSOR[] = "TextEditor.JumpToFileUnderCursor";
 const char JUMP_TO_FILE_UNDER_CURSOR_IN_NEXT_SPLIT[] = "TextEditor.JumpToFileUnderCursorInNextSplit";
 

src/plugins/texteditor/texteditorplugin.cpp

@@ -26,6 +26,7 @@
 #include "texteditorsettings.h"
 #include "texteditortr.h"
 #include "textmark.h"
+#include "typehierarchy.h"
 #include "typingsettings.h"
 
 #ifdef WITH_TESTS
@@ -105,6 +106,7 @@ void TextEditorPlugin::initialize()
 
     setupTextMarkRegistry(this);
     setupOutlineFactory();
+    setupTypeHierarchyFactory();
     setupLineNumberFilter(); // Goto line functionality for quick open
 
     setupPlainTextEditor();

src/plugins/texteditor/typehierarchy.cpp

@@ -0,0 +1,136 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "typehierarchy.h"
+
+#include "texteditorconstants.h"
+#include "texteditortr.h"
+
+#include <coreplugin/actionmanager/actionmanager.h>
+#include <coreplugin/editormanager/editormanager.h>
+#include <coreplugin/editormanager/ieditor.h>
+#include <coreplugin/inavigationwidgetfactory.h>
+
+#include <utils/utilsicons.h>
+
+#include <QLabel>
+#include <QPalette>
+#include <QStackedWidget>
+#include <QToolButton>
+
+using namespace Utils;
+
+namespace TextEditor {
+namespace Internal {
+
+static QList<TypeHierarchyWidgetFactory *> g_widgetFactories;
+
+class TypeHierarchyFactory : public Core::INavigationWidgetFactory
+{
+public:
+    TypeHierarchyFactory()
+    {
+        setDisplayName(Tr::tr("Type Hierarchy"));
+        setPriority(649);
+        setId(Constants::TYPE_HIERARCHY_FACTORY_ID);
+    }
+
+private:
+    Core::NavigationView createWidget() override;
+};
+
+class TypeHierarchyWidgetStack : public QStackedWidget
+{
+    Q_OBJECT
+
+public:
+    TypeHierarchyWidgetStack();
+
+    void reload();
+};
+
+static TypeHierarchyFactory &typeHierarchyFactory()
+{
+    static TypeHierarchyFactory theFactory;
+    return theFactory;
+}
+
+void setupTypeHierarchyFactory()
+{
+    (void) typeHierarchyFactory();
+}
+
+TypeHierarchyWidgetStack::TypeHierarchyWidgetStack()
+{
+    QLabel *label = new QLabel(Tr::tr("No type hierarchy available"), this);
+    label->setAlignment(Qt::AlignCenter);
+
+    label->setAutoFillBackground(true);
+    label->setBackgroundRole(QPalette::Base);
+
+    addWidget(label);
+    reload();
+}
+
+void TypeHierarchyWidgetStack::reload()
+{
+    const auto editor = Core::EditorManager::currentEditor();
+    TypeHierarchyWidget *newWidget = nullptr;
+
+    if (editor) {
+        for (TypeHierarchyWidgetFactory * const widgetFactory : std::as_const(g_widgetFactories)) {
+            if ((newWidget = widgetFactory->createWidget(editor)))
+                break;
+        }
+    }
+
+    QWidget * const current = currentWidget();
+    if (current) {
+        removeWidget(current);
+        current->deleteLater();
+    }
+    if (newWidget) {
+        addWidget(newWidget);
+        setCurrentWidget(newWidget);
+        setFocusProxy(newWidget);
+        newWidget->reload();
+    }
+}
+
+Core::NavigationView TypeHierarchyFactory::createWidget()
+{
+    const auto placeholder = new TypeHierarchyWidgetStack;
+    const auto reloadButton = new QToolButton;
+    reloadButton->setIcon(Icons::RELOAD_TOOLBAR.icon());
+    reloadButton->setToolTip(Tr::tr("Reloads the type hierarchy for the symbol under the cursor."));
+    connect(reloadButton, &QToolButton::clicked, placeholder, &TypeHierarchyWidgetStack::reload);
+    return {placeholder, {reloadButton}};
+}
+
+void updateTypeHierarchy(QWidget *widget)
+{
+    if (const auto w = qobject_cast<TypeHierarchyWidgetStack *>(widget))
+        w->reload();
+}
+
+} // namespace Internal
+
+TypeHierarchyWidgetFactory::TypeHierarchyWidgetFactory()
+{
+    Internal::g_widgetFactories.append(this);
+}
+
+TypeHierarchyWidgetFactory::~TypeHierarchyWidgetFactory()
+{
+    Internal::g_widgetFactories.removeOne(this);
+}
+
+void openTypeHierarchy()
+{
+    if (const auto action = Core::ActionManager::command(Constants::OPEN_TYPE_HIERARCHY)->action())
+        action->trigger();
+}
+
+} // namespace TextEditor
+
+#include <typehierarchy.moc>

src/plugins/texteditor/typehierarchy.h

@@ -0,0 +1,39 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#pragma once
+
+#include <texteditor/texteditor_global.h>
+
+#include <QWidget>
+
+namespace Core { class IEditor; }
+
+namespace TextEditor {
+namespace Internal {
+void setupTypeHierarchyFactory();
+void updateTypeHierarchy(QWidget *widget);
+}
+
+class TEXTEDITOR_EXPORT TypeHierarchyWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    virtual void reload() = 0;
+};
+
+class TEXTEDITOR_EXPORT TypeHierarchyWidgetFactory : public QObject
+{
+    Q_OBJECT
+
+public:
+    virtual TypeHierarchyWidget *createWidget(Core::IEditor *editor) = 0;
+
+protected:
+    TypeHierarchyWidgetFactory();
+    ~TypeHierarchyWidgetFactory() override;
+};
+
+TEXTEDITOR_EXPORT void openTypeHierarchy();
+
+} // namespace TextEditor