move text document for file path convenience function

Move it from language client utils to a static function inside
the text document.

Change-Id: I91bc72d0e978c1d843082e12bb8a0fa60a1bbc5e
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/languageclient/client.cpp

@@ -554,7 +554,7 @@ void Client::cursorPositionChanged(TextEditor::TextEditorWidget *widget)
 void Client::requestCodeActions(const DocumentUri &uri, const QList<Diagnostic> &diagnostics)
 {
     const Utils::FileName fileName = uri.toFileName();
-    TextEditor::TextDocument *doc = textDocumentForFileName(fileName);
+    TextEditor::TextDocument *doc = TextEditor::TextDocument::textDocumentForFileName(fileName);
     if (!doc)
         return;
 
@@ -811,7 +811,8 @@ void Client::showMessageBox(const ShowMessageRequestParams &message, const Messa
 
 void Client::showDiagnostics(const DocumentUri &uri)
 {
-    if (TextEditor::TextDocument *doc = textDocumentForFileName(uri.toFileName())) {
+    if (TextEditor::TextDocument *doc
+        = TextEditor::TextDocument::textDocumentForFileName(uri.toFileName())) {
         for (TextMark *mark : m_diagnostics.value(uri))
             doc->addMark(mark);
     }
@@ -819,7 +820,8 @@ void Client::showDiagnostics(const DocumentUri &uri)
 
 void Client::removeDiagnostics(const DocumentUri &uri)
 {
-    TextEditor::TextDocument *doc = textDocumentForFileName(uri.toFileName());
+    TextEditor::TextDocument *doc
+        = TextEditor::TextDocument::textDocumentForFileName(uri.toFileName());
 
     for (TextMark *mark : m_diagnostics.take(uri)) {
         if (doc)

src/plugins/languageclient/languageclientutils.cpp

@@ -40,6 +40,7 @@
 
 using namespace LanguageServerProtocol;
 using namespace Utils;
+using namespace TextEditor;
 
 namespace LanguageClient {
 
@@ -72,7 +73,7 @@ bool applyTextDocumentEdit(const TextDocumentEdit &edit)
     if (edits.isEmpty())
         return true;
     const DocumentUri &uri = edit.id().uri();
-    if (TextEditor::TextDocument* doc = textDocumentForFileName(uri.toFileName())) {
+    if (TextDocument* doc = TextDocument::textDocumentForFileName(uri.toFileName())) {
         LanguageClientValue<int> version = edit.id().version();
         if (!version.isNull() && version.value(0) < doc->document()->revision())
             return false;
@@ -84,14 +85,14 @@ bool applyTextEdits(const DocumentUri &uri, const QList<TextEdit> &edits)
 {
     if (edits.isEmpty())
         return true;
-    TextEditor::RefactoringChanges changes;
-    TextEditor::RefactoringFilePtr file;
+    RefactoringChanges changes;
+    RefactoringFilePtr file;
     file = changes.file(uri.toFileName().toString());
     file->setChangeSet(editsToChangeSet(edits, file->document()));
     return file->apply();
 }
 
-void applyTextEdit(TextEditor::TextDocumentManipulatorInterface &manipulator, const TextEdit &edit)
+void applyTextEdit(TextDocumentManipulatorInterface &manipulator, const TextEdit &edit)
 {
     using namespace Utils::Text;
     const Range range = edit.range();
@@ -118,12 +119,6 @@ bool applyWorkspaceEdit(const WorkspaceEdit &edit)
     return result;
 }
 
-TextEditor::TextDocument *textDocumentForFileName(const FileName &fileName)
-{
-    return qobject_cast<TextEditor::TextDocument *>(
-                Core::DocumentModel::documentForFilePath(fileName.toString()));
-}
-
 QTextCursor endOfLineCursor(const QTextCursor &cursor)
 {
     QTextCursor ret = cursor;
@@ -135,8 +130,7 @@ void updateCodeActionRefactoringMarker(Client *client,
                                        const CodeAction &action,
                                        const DocumentUri &uri)
 {
-    using namespace TextEditor;
-    TextDocument* doc = textDocumentForFileName(uri.toFileName());
+    TextDocument* doc = TextDocument::textDocumentForFileName(uri.toFileName());
     if (!doc)
         return;
     BaseTextEditor *editor = BaseTextEditor::textEditorForDocument(doc);

src/plugins/languageclient/languageclientutils.h

@@ -45,7 +45,6 @@ bool applyTextEdits(const LanguageServerProtocol::DocumentUri &uri,
                     const QList<LanguageServerProtocol::TextEdit> &edits);
 void applyTextEdit(TextEditor::TextDocumentManipulatorInterface &manipulator,
                    const LanguageServerProtocol::TextEdit &edit);
-TextEditor::TextDocument *textDocumentForFileName(const Utils::FileName &fileName);
 void updateCodeActionRefactoringMarker(Client *client,
                                        const LanguageServerProtocol::CodeAction &action,
                                        const LanguageServerProtocol::DocumentUri &uri);

src/plugins/texteditor/textdocument.cpp

@@ -299,6 +299,11 @@ TextDocument *TextDocument::currentTextDocument()
     return qobject_cast<TextDocument *>(EditorManager::currentDocument());
 }
 
+TextDocument *TextDocument::textDocumentForFileName(const Utils::FileName &fileName)
+{
+    return qobject_cast<TextDocument *>(DocumentModel::documentForFilePath(fileName.toString()));
+}
+
 QString TextDocument::plainText() const
 {
     return document()->toPlainText();

src/plugins/texteditor/textdocument.h

@@ -70,6 +70,7 @@ public:
     static QMap<QString, QString> openedTextDocumentContents();
     static QMap<QString, QTextCodec *> openedTextDocumentEncodings();
     static TextDocument *currentTextDocument();
+    static TextDocument *textDocumentForFileName(const Utils::FileName &fileName);
 
     virtual QString plainText() const;
     virtual QString textAt(int pos, int length) const;

src/plugins/texteditor/textmark.cpp

@@ -361,11 +361,8 @@ TextMarkRegistry::TextMarkRegistry(QObject *parent)
 void TextMarkRegistry::add(TextMark *mark)
 {
     instance()->m_marks[mark->fileName()].insert(mark);
-    auto document = qobject_cast<TextDocument *>(
-        DocumentModel::documentForFilePath(mark->fileName().toString()));
-    if (!document)
-        return;
-    document->addMark(mark);
+    if (TextDocument *document = TextDocument::textDocumentForFileName(mark->fileName()))
+        document->addMark(mark);
 }
 
 bool TextMarkRegistry::remove(TextMark *mark)