HackStudio: Make sure project files are created with an absolute path

This fixes an issue were "Find in Files" would not use the up-to-date
content of a file with unsaved changes.

The issue existed because 'FindInFilesWidget' uses
Project::for_each_text_file, which retrieves files by their absolute
path. However, when a file is opened in an Editor, it is created with
a relative path.

This caused us to store two ProjectFile objects that refer to the same
file - one with a relative path and one with an absolute path.

2 files changed, 15 insertions, 4 deletions

diff --git a/Userland/DevTools/HackStudio/Project.cpp b/Userland/DevTools/HackStudio/Project.cpp
index f83f2e8940..6db51516fc 100644
--- a/Userland/DevTools/HackStudio/Project.cpp
+++ b/Userland/DevTools/HackStudio/Project.cpp
@@ -70,15 +70,24 @@ void Project::for_each_text_file(Function<void(const ProjectFile&)> callback) co
     });
 }
 
-RefPtr<ProjectFile> Project::get_file(const String& path) const
+NonnullRefPtr<ProjectFile> Project::get_file(const String& path) const
 {
+    auto full_path = to_absolute_path(path);
     for (auto& file : m_files) {
-        if (file.name() == path)
+        if (file.name() == full_path)
             return file;
     }
-    auto file = ProjectFile::construct_with_name(path);
+    auto file = ProjectFile::construct_with_name(full_path);
     m_files.append(file);
     return file;
 }
 
+String Project::to_absolute_path(const String& path) const
+{
+    if (LexicalPath { path }.is_absolute()) {
+        return path;
+    }
+    return LexicalPath { String::formatted("{}/{}", m_root_path, path) }.string();
+}
+
 }
diff --git a/Userland/DevTools/HackStudio/Project.h b/Userland/DevTools/HackStudio/Project.h
index 6d3453e84e..afa1a49f9c 100644
--- a/Userland/DevTools/HackStudio/Project.h
+++ b/Userland/DevTools/HackStudio/Project.h
@@ -48,13 +48,15 @@ public:
     String name() const { return LexicalPath(m_root_path).basename(); }
     String root_path() const { return m_root_path; }
 
-    RefPtr<ProjectFile> get_file(const String& path) const;
+    NonnullRefPtr<ProjectFile> get_file(const String& path) const;
 
     void for_each_text_file(Function<void(const ProjectFile&)>) const;
 
 private:
     explicit Project(const String& root_path);
 
+    String to_absolute_path(const String&) const;
+
     RefPtr<GUI::FileSystemModel> m_model;
     mutable NonnullRefPtrVector<ProjectFile> m_files;