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LibGUI+FileManager: Merge GDirectoryModel into GFileSystemModel

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We used to have two different models for displaying file system contents:
the FileManager-grade table-like directory model, which exposed rich data
(such as file icons with integrated image previews) about contents of a
single directory, and the tree-like GFileSystemModel, which only exposed
a tree of file names with very basic info about them.

This commit unifies the two. The new GFileSystemModel can be used both as a
tree-like and as a table-like model, or in fact in both ways simultaneously.
It exposes rich data about a file system subtree rooted at the given root.

The users of the two previous models are all ported to use this new model.
This commit is contained in:
Sergey Bugaev 2020-01-10 18:58:00 +03:00 • committed by Andreas Kling
parent 0f18a16e2c
commit fdeb91e000
12 changed files with 597 additions and 700 deletions
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109
Libraries/LibGUI/GFileSystemModel.h
View file

@ -1,9 +1,15 @@
#pragma once
#include <AK/HashMap.h>
#include <AK/NonnullOwnPtrVector.h>
#include <LibCore/CNotifier.h>
#include <LibGUI/GModel.h>
#include <sys/stat.h>
#include <time.h>
class GFileSystemModel : public GModel {
friend class Node;
class GFileSystemModel : public GModel
, public Weakable<GFileSystemModel> {
friend struct Node;
public:
enum Mode {
@ -12,6 +18,53 @@ public:
FilesAndDirectories
};
enum Column {
Icon = 0,
Name,
Size,
Owner,
Group,
Permissions,
ModificationTime,
Inode,
__Count,
};
struct Node {
~Node() { close(m_watch_fd); }
String name;
size_t size { 0 };
mode_t mode { 0 };
uid_t uid { 0 };
gid_t gid { 0 };
ino_t inode { 0 };
time_t mtime { 0 };
size_t total_size { 0 };
mutable RefPtr<GraphicsBitmap> thumbnail;
bool is_directory() const { return S_ISDIR(mode); }
bool is_executable() const { return mode & S_IXUSR; }
String full_path(const GFileSystemModel&) const;
private:
friend class GFileSystemModel;
Node* parent { nullptr };
NonnullOwnPtrVector<Node> children;
bool has_traversed { false };
int m_watch_fd { -1 };
RefPtr<CNotifier> m_notifier;
GModelIndex index(const GFileSystemModel&, int column) const;
void traverse_if_needed(const GFileSystemModel&);
void reify_if_needed(const GFileSystemModel&);
bool fetch_data_using_lstat(const String& full_path);
};
static NonnullRefPtr<GFileSystemModel> create(const StringView& root_path = "/", Mode mode = Mode::FilesAndDirectories)
{
return adopt(*new GFileSystemModel(root_path, mode));
@ -19,27 +72,63 @@ public:
virtual ~GFileSystemModel() override;
String root_path() const { return m_root_path; }
String path(const GModelIndex&) const;
GModelIndex index(const StringView& path) const;
void set_root_path(const StringView&);
String full_path(const GModelIndex&) const;
GModelIndex index(const StringView& path, int column) const;
const Node& node(const GModelIndex& index) const;
GIcon icon_for_file(const mode_t mode, const String& name) const;
Function<void(int done, int total)> on_thumbnail_progress;
Function<void()> on_root_path_change;
virtual int tree_column() const { return Column::Name; }
virtual int row_count(const GModelIndex& = GModelIndex()) const override;
virtual int column_count(const GModelIndex& = GModelIndex()) const override;
virtual String column_name(int column) const override;
virtual ColumnMetadata column_metadata(int column) const override;
virtual GVariant data(const GModelIndex&, Role = Role::Display) const override;
virtual void update() override;
virtual GModelIndex parent_index(const GModelIndex&) const override;
virtual GModelIndex index(int row, int column = 0, const GModelIndex& parent = GModelIndex()) const override;
static String timestamp_string(time_t timestamp)
{
auto* tm = localtime(&timestamp);
return String::format("%4u-%02u-%02u %02u:%02u:%02u",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
tm->tm_sec);
}
private:
GFileSystemModel(const StringView& root_path, Mode);
String name_for_uid(uid_t) const;
String name_for_gid(gid_t) const;
HashMap<uid_t, String> m_user_names;
HashMap<gid_t, String> m_group_names;
bool fetch_thumbnail_for(const Node& node);
GIcon icon_for(const Node& node) const;
String m_root_path;
Mode m_mode { Invalid };
OwnPtr<Node> m_root { nullptr };
struct Node;
Node* m_root { nullptr };
void cleanup();
GIcon m_open_folder_icon;
GIcon m_closed_folder_icon;
GIcon m_directory_icon;
GIcon m_file_icon;
GIcon m_symlink_icon;
GIcon m_socket_icon;
GIcon m_executable_icon;
GIcon m_filetype_image_icon;
GIcon m_filetype_sound_icon;
GIcon m_filetype_html_icon;
unsigned m_thumbnail_progress { 0 };
unsigned m_thumbnail_progress_total { 0 };
};