TextEditor: De-qobjectify SnippetProvider

It's really not much more than a struct with three items.
And there's no need to have them in the global object pool.

Change-Id: Ie4f46ba2ecb1b90ef22479a0e81d03d9301c2e7a
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/texteditor/snippets/snippetprovider.cpp

@@ -31,27 +31,19 @@
 
 using namespace TextEditor;
 
-static QList<SnippetProvider *> g_snippetProviders;
+static QList<SnippetProvider> g_snippetProviders;
 
-const QList<SnippetProvider *> SnippetProvider::snippetProviders()
+const QList<SnippetProvider> &SnippetProvider::snippetProviders()
 {
     return g_snippetProviders;
 }
 
 SnippetProvider *SnippetProvider::snippetProviderForGroupId(const QString &groupId)
 {
-    return Utils::findOrDefault(g_snippetProviders,
+    auto end = std::end(g_snippetProviders);
+    auto it = std::find_if(std::begin(g_snippetProviders), end,
                            Utils::equal(&SnippetProvider::groupId, groupId));
-}
-
-SnippetProvider::SnippetProvider()
-{
-    g_snippetProviders.append(this);
-}
-
-SnippetProvider::~SnippetProvider()
-{
-    g_snippetProviders.removeOne(this);
+    return (it == end) ? nullptr : &*it;
 }
 
 /*!
@@ -137,10 +129,9 @@ static void doNotDecorate(TextEditorWidget *) { }
 void SnippetProvider::registerGroup(const QString &groupId, const QString &displayName,
                                      EditorDecorator editorDecorator)
 {
-    auto provider = new SnippetProvider;
-    provider->m_groupId = groupId;
-    provider->m_displayName = displayName;
-    provider->m_editorDecorator = editorDecorator ? editorDecorator : EditorDecorator(doNotDecorate);
-    Internal::TextEditorPlugin::instance()->addAutoReleasedObject(provider);
+    SnippetProvider provider;
+    provider.m_groupId = groupId;
+    provider.m_displayName = displayName;
+    provider.m_editorDecorator = editorDecorator ? editorDecorator : EditorDecorator(doNotDecorate);
+    g_snippetProviders.append(provider);
 }
-

src/plugins/texteditor/snippets/snippetprovider.h

@@ -27,7 +27,7 @@
 
 #include <texteditor/texteditor_global.h>
 
-#include <QObject>
+#include <QString>
 
 #include <functional>
 
@@ -35,13 +35,14 @@ namespace TextEditor {
 
 class TextEditorWidget;
 
-class TEXTEDITOR_EXPORT SnippetProvider : public QObject
+class TEXTEDITOR_EXPORT SnippetProvider
 {
-    Q_OBJECT
 public:
+    SnippetProvider() = default;
+
     using EditorDecorator = std::function<void(TextEditorWidget *)>;
 
-    static const QList<SnippetProvider *> snippetProviders();
+    static const QList<SnippetProvider> &snippetProviders();
     static SnippetProvider *snippetProviderForGroupId(const QString &groupId);
 
     static void registerGroup(const QString &groupId, const QString &displayName,
@@ -54,9 +55,6 @@ public:
     void decorateEditor(TextEditorWidget *editor) const;
 
 private:
-    SnippetProvider();
-    ~SnippetProvider() override;
-
     QString m_groupId;
     QString m_displayName;
     EditorDecorator m_editorDecorator;

src/plugins/texteditor/snippets/snippetscollection.cpp

@@ -409,9 +409,9 @@ int SnippetsCollection::groupIndex(const QString &groupId) const
 
 void SnippetsCollection::identifyGroups()
 {
-    for (SnippetProvider *provider : SnippetProvider::snippetProviders()) {
+    for (const SnippetProvider &provider : SnippetProvider::snippetProviders()) {
         const int groupIndex = m_groupIndexById.size();
-        m_groupIndexById.insert(provider->groupId(), groupIndex);
+        m_groupIndexById.insert(provider.groupId(), groupIndex);
         m_snippets.resize(groupIndex + 1);
         m_activeSnippetsEnd.resize(groupIndex + 1);
         m_activeSnippetsEnd[groupIndex] = m_snippets[groupIndex].end();

src/plugins/texteditor/snippets/snippetssettingspage.cpp

@@ -328,11 +328,11 @@ void SnippetsSettingsPagePrivate::configureUi(QWidget *w)
 {
     m_ui.setupUi(w);
 
-    const QList<SnippetProvider *> &providers = SnippetProvider::snippetProviders();
-    for (SnippetProvider *provider : providers) {
-        m_ui.groupCombo->addItem(provider->displayName(), provider->groupId());
+    const QList<SnippetProvider> &providers = SnippetProvider::snippetProviders();
+    for (const SnippetProvider &provider : providers) {
+        m_ui.groupCombo->addItem(provider.displayName(), provider.groupId());
         SnippetEditorWidget *snippetEditor = new SnippetEditorWidget(w);
-        provider->decorateEditor(snippetEditor);
+        provider.decorateEditor(snippetEditor);
         m_ui.snippetsEditorStack->insertWidget(m_ui.groupCombo->count() - 1, snippetEditor);
         connect(snippetEditor, &SnippetEditorWidget::snippetContentChanged,
                 this, &SnippetsSettingsPagePrivate::setSnippetContent);
@@ -536,15 +536,15 @@ void SnippetsSettingsPagePrivate::setSnippetContent()
 
 void SnippetsSettingsPagePrivate::decorateEditors(const TextEditor::FontSettings &fontSettings)
 {
-    const QList<SnippetProvider *> &providers = SnippetProvider::snippetProviders();
+    const QList<SnippetProvider> &providers = SnippetProvider::snippetProviders();
     for (int i = 0; i < m_ui.groupCombo->count(); ++i) {
         SnippetEditorWidget *snippetEditor = editorAt(i);
         snippetEditor->textDocument()->setFontSettings(fontSettings);
         const QString &id = m_ui.groupCombo->itemData(i).toString();
         // This list should be quite short... Re-iterating over it is ok.
-        foreach (const SnippetProvider *provider, providers) {
-            if (provider->groupId() == id)
-                provider->decorateEditor(snippetEditor);
+        foreach (const SnippetProvider &provider, providers) {
+            if (provider.groupId() == id)
+                provider.decorateEditor(snippetEditor);
         }
     }
 }