Applications: Move to Userland/Applications/

Userland/Applications/FileManager/DirectoryView.h

@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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>
+#include <LibGUI/StackWidget.h>
+#include <LibGUI/TableView.h>
+#include <sys/stat.h>
+
+namespace FileManager {
+
+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);
+
+public:
+    enum class Mode {
+        Desktop,
+        Normal,
+    };
+
+    virtual ~DirectoryView() override;
+
+    void open(const StringView& path);
+    String path() const { return model().root_path(); }
+    void open_parent_directory();
+    void open_previous_directory();
+    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();
+
+    void launch(const AK::URL&, const LauncherHandler&);
+
+    Function<void(const StringView& path, bool can_write_in_path)> on_path_change;
+    Function<void(GUI::AbstractView&)> on_selection_change;
+    Function<void(const GUI::ModelIndex&, const GUI::ContextMenuEvent&)> on_context_menu_request;
+    Function<void(const StringView&)> on_status_message;
+    Function<void(int done, int total)> on_thumbnail_progress;
+    Function<void()> on_accepted_drop;
+
+    enum ViewMode {
+        Invalid,
+        Table,
+        Columns,
+        Icon
+    };
+    void set_view_mode(ViewMode);
+    ViewMode view_mode() const { return m_view_mode; }
+
+    GUI::AbstractView& current_view()
+    {
+        switch (m_view_mode) {
+        case ViewMode::Table:
+            return *m_table_view;
+        case ViewMode::Columns:
+            return *m_columns_view;
+        case ViewMode::Icon:
+            return *m_icon_view;
+        default:
+            ASSERT_NOT_REACHED();
+        }
+    }
+
+    const GUI::AbstractView& current_view() const
+    {
+        return const_cast<DirectoryView*>(this)->current_view();
+    }
+
+    template<typename Callback>
+    void for_each_view_implementation(Callback callback)
+    {
+        if (m_icon_view)
+            callback(*m_icon_view);
+        if (m_table_view)
+            callback(*m_table_view);
+        if (m_columns_view)
+            callback(*m_columns_view);
+    }
+
+    void set_should_show_dotfiles(bool);
+
+    const GUI::FileSystemModel::Node& node(const GUI::ModelIndex&) const;
+
+    bool is_desktop() const { return m_mode == Mode::Desktop; }
+
+    Vector<String> selected_file_paths() const;
+
+    GUI::Action& mkdir_action() { return *m_mkdir_action; }
+    GUI::Action& touch_action() { return *m_touch_action; }
+    GUI::Action& open_terminal_action() { return *m_open_terminal_action; }
+    GUI::Action& delete_action() { return *m_delete_action; }
+    GUI::Action& force_delete_action() { return *m_force_delete_action; }
+
+private:
+    explicit DirectoryView(Mode);
+
+    const GUI::FileSystemModel& model() const { return *m_model; }
+    GUI::FileSystemModel& model() { return *m_model; }
+
+    void handle_selection_change();
+    void handle_drop(const GUI::ModelIndex&, const GUI::DropEvent&);
+    void do_delete(bool should_confirm);
+
+    // ^GUI::ModelClient
+    virtual void model_did_update(unsigned) override;
+
+    void setup_actions();
+    void setup_model();
+    void setup_icon_view();
+    void setup_columns_view();
+    void setup_table_view();
+
+    void handle_activation(const GUI::ModelIndex&);
+
+    void set_status_message(const StringView&);
+    void update_statusbar();
+
+    Mode m_mode { Mode::Normal };
+    ViewMode m_view_mode { Invalid };
+
+    NonnullRefPtr<GUI::FileSystemModel> m_model;
+    NonnullRefPtr<GUI::SortingProxyModel> m_sorting_model;
+    size_t m_path_history_position { 0 };
+    Vector<String> m_path_history;
+    void add_path_to_history(const StringView& path);
+
+    RefPtr<GUI::Label> m_error_label;
+
+    RefPtr<GUI::TableView> m_table_view;
+    RefPtr<GUI::IconView> m_icon_view;
+    RefPtr<GUI::ColumnsView> m_columns_view;
+
+    RefPtr<GUI::Action> m_mkdir_action;
+    RefPtr<GUI::Action> m_touch_action;
+    RefPtr<GUI::Action> m_open_terminal_action;
+    RefPtr<GUI::Action> m_delete_action;
+    RefPtr<GUI::Action> m_force_delete_action;
+};
+
+}