fix: don't create new file from palette

src/core/project.cpp

@@ -261,13 +261,16 @@ const QList<Document *> &Project::documents() const
     return m_documents;
 }
 
-Document *Project::getDocument(QString fileName, bool moveToBack)
+Document *Project::getDocument(QString fileName, bool moveToBack, bool onlyExistingFile)
 {
     QFileInfo fi(fileName);
     if (!fi.exists() && fi.isRelative())
         fileName = m_root + '/' + fileName;
     else
         fileName = fi.absoluteFilePath();
+    if (onlyExistingFile && !QFileInfo::exists(fileName)) {
+        return {};
+    }
 
     auto findIt = std::ranges::find_if(m_documents, [fileName](auto document) {
         return document->fileName() == fileName;
@@ -315,20 +318,25 @@ Document *Project::get(const QString &fileName)
 }
 
 /*!
- * \qmlmethod Document Project::open(string fileName)
+ * \qmlmethod Document Project::open(string fileName, bool onlyExistingFile)
  * Opens or creates a document for the given `fileName` and make it current. If the document is already opened, returns
  * the same instance, a document can't be open twice. If the fileName is relative, use the root path as the base.
+ * If onlyExistingFile is true, don't create file
  *
- *  If the document does not exist, creates a new document (but don't save it yet).
+ *  If the document does not exist (and onlyExistingFile is false (default)), creates a new document (but don't save it
+ * yet).
  */
-Document *Project::open(const QString &fileName)
+Document *Project::open(const QString &fileName, bool onlyExistingFile)
 {
     if (m_current && m_current->fileName() == fileName)
         return m_current;
 
     LOG(LOG_ARG("path", fileName));
 
-    m_current = getDocument(fileName, true);
+    m_current = getDocument(fileName, true, onlyExistingFile);
+    if (!m_current) {
+        return {};
+    }
     emit currentDocumentChanged(m_current);
 
     LOG_RETURN("document", m_current);

src/core/project.h

@@ -58,7 +58,7 @@ class Project : public QObject
 
 public slots:
     Core::Document *get(const QString &fileName);
-    Core::Document *open(const QString &fileName);
+    Core::Document *open(const QString &fileName, bool onlyExistingFile = false);
     void closeAll();
     void saveAllDocuments();
     Core::Document *openPrevious(int index = 1);
@@ -72,7 +72,7 @@ public slots:
     friend class KnutCore;
     explicit Project(QObject *parent = nullptr);
 
-    Core::Document *getDocument(QString fileName, bool moveToBack = false);
+    Core::Document *getDocument(QString fileName, bool moveToBack = false, bool onlyExistingFile = false);
     Lsp::Client *getClient(Document::Type type);
 
 private:

src/gui/palette.cpp

@@ -481,7 +481,7 @@ void Palette::addFileSelector()
         model->resetFileInfo();
     };
     auto selectFile = [](const QVariant &path) {
-        Core::Project::instance()->open(path.toString());
+        Core::Project::instance()->open(path.toString(), true);
     };
     m_selectors.emplace_back("", std::move(fileModel), selectFile, resetFiles);
 }