FileManager: Add "Open with" menu if alternative applications are available

3 files changed, 128 insertions, 21 deletions

diff --git a/Applications/FileManager/DirectoryView.cpp b/Applications/FileManager/DirectoryView.cpp
index e188e96111..bcf49179ab 100644
--- a/Applications/FileManager/DirectoryView.cpp
+++ b/Applications/FileManager/DirectoryView.cpp
@@ -27,12 +27,56 @@
 #include "DirectoryView.h"
 #include <AK/NumberFormat.h>
 #include <AK/StringBuilder.h>
-#include <AK/URL.h>
-#include <LibDesktop/Launcher.h>
+#include <LibGUI/MessageBox.h>
 #include <LibGUI/SortingProxyModel.h>
 #include <stdio.h>
 #include <unistd.h>
 
+NonnullRefPtr<GUI::Action> LauncherHandler::create_launch_action(Function<void(const LauncherHandler&)> launch_handler)
+{
+    RefPtr<Gfx::Bitmap> icon;
+    auto icon_file = details().icons.get("16x16");
+    if (icon_file.has_value())
+        icon = Gfx::Bitmap::load_from_file(icon_file.value());
+    return GUI::Action::create(details().name, move(icon), [this, launch_handler = move(launch_handler)](auto&) {
+        launch_handler(*this);
+    });
+}
+
+RefPtr<LauncherHandler> DirectoryView::get_default_launch_handler(const NonnullRefPtrVector<LauncherHandler>& handlers)
+{
+    // If there's a handler preferred by the user, pick this first
+    for (size_t i = 0; i < handlers.size(); i++) {
+        if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserPreferred)
+            return handlers[i];
+    }
+    // Otherwise, use the user's default, if available
+    for (size_t i = 0; i < handlers.size(); i++) {
+        if (handlers[i].details().launcher_type == Desktop::Launcher::LauncherType::UserDefault)
+            return handlers[i];
+    }
+    // If still no match, use the first one we find
+    if (!handlers.is_empty()) {
+        return handlers[0];
+    }
+
+    return {};
+}
+
+NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const URL& url)
+{
+    NonnullRefPtrVector<LauncherHandler> handlers;
+    for (auto& h : Desktop::Launcher::get_handlers_with_details_for_url(url)) {
+        handlers.append(adopt(*new LauncherHandler(h)));
+    }
+    return handlers;
+}
+
+NonnullRefPtrVector<LauncherHandler> DirectoryView::get_launch_handlers(const String& path)
+{
+    return get_launch_handlers(URL::create_with_file_protocol(path));
+}
+
 void DirectoryView::handle_activation(const GUI::ModelIndex& index)
 {
     if (!index.is_valid())
@@ -52,7 +96,15 @@ void DirectoryView::handle_activation(const GUI::ModelIndex& index)
         return;
     }
 
-    Desktop::Launcher::open(URL::create_with_file_protocol(path));
+    auto url = URL::create_with_file_protocol(path);
+    auto launcher_handlers = get_launch_handlers(url);
+    auto default_launcher = get_default_launch_handler(launcher_handlers);
+    if (default_launcher) {
+        Desktop::Launcher::open(url, default_launcher->details());
+    } else {
+        auto error_message = String::format("Could not open %s", path.characters());
+        GUI::MessageBox::show(error_message, "File Manager", GUI::MessageBox::Type::Error);
+    }
 }
 
 DirectoryView::DirectoryView()
diff --git a/Applications/FileManager/DirectoryView.h b/Applications/FileManager/DirectoryView.h
index 1bef4e4b2b..88fedefb74 100644
--- a/Applications/FileManager/DirectoryView.h
+++ b/Applications/FileManager/DirectoryView.h
@@ -26,7 +26,10 @@
 
 #pragma once
 
+#include <AK/URL.h>
 #include <AK/Vector.h>
+#include <LibDesktop/Launcher.h>
+#include <LibGUI/Action.h>
 #include <LibGUI/ColumnsView.h>
 #include <LibGUI/FileSystemModel.h>
 #include <LibGUI/IconView.h>
@@ -34,6 +37,20 @@
 #include <LibGUI/TableView.h>
 #include <sys/stat.h>
 
+class LauncherHandler: public RefCounted<LauncherHandler> {
+public:
+    LauncherHandler(const NonnullRefPtr<Desktop::Launcher::Details>& details)
+        : m_details(details)
+    {
+    }
+
+    NonnullRefPtr<GUI::Action> create_launch_action(Function<void(const LauncherHandler&)>);
+    const Desktop::Launcher::Details& details() const { return *m_details; }
+
+private:
+    NonnullRefPtr<Desktop::Launcher::Details> m_details;
+};
+
 class DirectoryView final : public GUI::StackWidget
     , private GUI::ModelClient {
     C_OBJECT(DirectoryView)
@@ -47,6 +64,9 @@ public:
     void open_next_directory();
     int path_history_size() const { return m_path_history.size(); }
     int path_history_position() const { return m_path_history_position; }
+    static RefPtr<LauncherHandler> get_default_launch_handler(const NonnullRefPtrVector<LauncherHandler>& handlers);
+    NonnullRefPtrVector<LauncherHandler> get_launch_handlers(const URL& url);
+    NonnullRefPtrVector<LauncherHandler> get_launch_handlers(const String& path);
 
     void refresh();
 
diff --git a/Applications/FileManager/main.cpp b/Applications/FileManager/main.cpp
index 6d69c7b894..af96c596a2 100644
--- a/Applications/FileManager/main.cpp
+++ b/Applications/FileManager/main.cpp
@@ -313,7 +313,6 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
     };
 
     auto directory_context_menu = GUI::Menu::construct("Directory View Directory");
-    auto file_context_menu = GUI::Menu::construct("Directory View File");
     auto directory_view_context_menu = GUI::Menu::construct("Directory View");
     auto tree_view_directory_context_menu = GUI::Menu::construct("Tree View Directory");
     auto tree_view_context_menu = GUI::Menu::construct("Tree View");
@@ -719,28 +718,12 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
         copy_action->set_enabled(!selection.is_empty());
     };
 
-    auto open_in_text_editor_action = GUI::Action::create("Open in TextEditor...", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-text-editor.png"), [&](auto&) {
-        pid_t child;
-        for (auto& path : selected_file_paths()) {
-            const char* argv[] = { "TextEditor", path.characters(), nullptr };
-            posix_spawn(&child, "/bin/TextEditor", nullptr, nullptr, const_cast<char**>(argv), environ);
-        }
-    });
-
     directory_context_menu->add_action(copy_action);
     directory_context_menu->add_action(folder_specific_paste_action);
     directory_context_menu->add_action(delete_action);
     directory_context_menu->add_separator();
     directory_context_menu->add_action(properties_action);
 
-    file_context_menu->add_action(copy_action);
-    file_context_menu->add_action(paste_action);
-    file_context_menu->add_action(delete_action);
-    file_context_menu->add_separator();
-    file_context_menu->add_action(open_in_text_editor_action);
-    file_context_menu->add_separator();
-    file_context_menu->add_action(properties_action);
-
     directory_view_context_menu->add_action(mkdir_action);
     directory_view_context_menu->add_action(paste_action);
     directory_view_context_menu->add_action(open_terminal_action);
@@ -755,6 +738,18 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
     tree_view_directory_context_menu->add_separator();
     tree_view_directory_context_menu->add_action(mkdir_action);
 
+    RefPtr<GUI::Menu> file_context_menu;
+    NonnullRefPtrVector<LauncherHandler> current_file_handlers;
+    RefPtr<GUI::Action> file_context_menu_action_default_action;
+
+    auto file_open_action_handler = [&](const LauncherHandler& launcher_handler) {
+        pid_t child;
+        for (auto& path : selected_file_paths()) {
+            const char* argv[] = { launcher_handler.details().name.characters(), path.characters(), nullptr };
+            posix_spawn(&child, launcher_handler.details().executable.characters(), nullptr, nullptr, const_cast<char**>(argv), environ);
+        }
+    };
+
     directory_view.on_context_menu_request = [&](const GUI::AbstractView&, const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {
         if (index.is_valid()) {
             auto& node = directory_view.model().node(index);
@@ -764,7 +759,47 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
                 folder_specific_paste_action->set_enabled(should_get_enabled);
                 directory_context_menu->popup(event.screen_position());
             } else {
-                file_context_menu->popup(event.screen_position(), open_in_text_editor_action);
+                current_file_handlers = directory_view.get_launch_handlers(node.full_path(directory_view.model()));
+
+                file_context_menu = GUI::Menu::construct("Directory View File");
+                file_context_menu->add_action(copy_action);
+                file_context_menu->add_action(paste_action);
+                file_context_menu->add_action(delete_action);
+
+                file_context_menu->add_separator();
+                bool added_open_menu_items = false;
+                auto default_file_handler = directory_view.get_default_launch_handler(current_file_handlers);
+                if (default_file_handler) {
+                    auto file_open_action = default_file_handler->create_launch_action([&](auto& launcher_handler) {
+                        file_open_action_handler(launcher_handler);
+                    });
+                    file_open_action->set_text(String::format("Open in %s", file_open_action->text().characters()));
+
+                    file_context_menu_action_default_action = file_open_action;
+
+                    file_context_menu->add_action(move(file_open_action));
+                    added_open_menu_items = true;
+                } else {
+                    file_context_menu_action_default_action.clear();
+                }
+                
+                if (current_file_handlers.size() > 1) {
+                    added_open_menu_items = true;
+                    auto& file_open_with_menu = file_context_menu->add_submenu("Open with");
+                    for (auto& handler : current_file_handlers) {
+                        if (&handler == default_file_handler.ptr())
+                            continue;
+                        file_open_with_menu.add_action(handler.create_launch_action([&](auto& launcher_handler) {
+                            file_open_action_handler(launcher_handler);
+                        }));
+                    }
+                }
+
+                if (added_open_menu_items)
+                    file_context_menu->add_separator();
+
+                file_context_menu->add_action(properties_action);
+                file_context_menu->popup(event.screen_position(), file_context_menu_action_default_action);
             }
         } else {
             directory_view_context_menu->popup(event.screen_position());