add ability to reorder roles

- some other small tweaks

components/draglistbox.cpp

@@ -0,0 +1,141 @@
+#include "draglistbox.hpp"
+
+DragListBox::DragListBox() {
+    drag_dest_set(m_entries, Gtk::DEST_DEFAULT_MOTION | Gtk::DEST_DEFAULT_DROP, Gdk::ACTION_MOVE);
+}
+
+void DragListBox::row_drag_begin(Gtk::Widget *widget, const Glib::RefPtr<Gdk::DragContext> &context) {
+    m_drag_row = dynamic_cast<Gtk::ListBoxRow *>(widget->get_ancestor(GTK_TYPE_LIST_BOX_ROW));
+
+    auto alloc = m_drag_row->get_allocation();
+    auto surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, alloc.get_width(), alloc.get_height());
+    auto cr = Cairo::Context::create(surface);
+
+    m_drag_row->get_style_context()->add_class("drag-icon");
+    gtk_widget_draw(reinterpret_cast<GtkWidget *>(m_drag_row->gobj()), cr->cobj());
+    m_drag_row->get_style_context()->remove_class("drag-icon");
+
+    int x, y;
+    widget->translate_coordinates(*m_drag_row, 0, 0, x, y);
+    surface->set_device_offset(-x, -y);
+    context->set_icon(surface);
+}
+
+bool DragListBox::on_drag_motion(const Glib::RefPtr<Gdk::DragContext> &context, gint x, gint y, guint time) {
+    if (y > m_hover_top || y < m_hover_bottom) {
+        auto *row = get_row_at_y(y);
+        if (row == nullptr) return true;
+        const bool old_top = m_top;
+        const auto alloc = row->get_allocation();
+
+        const int hover_row_y = alloc.get_y();
+        const int hover_row_height = alloc.get_height();
+        if (row != m_drag_row) {
+            if (y < hover_row_y + hover_row_height / 2) {
+                m_hover_top = hover_row_y;
+                m_hover_bottom = m_hover_top + hover_row_height / 2;
+                row->get_style_context()->add_class("drag-hover-top");
+                row->get_style_context()->remove_class("drag-hover-bottom");
+                m_top = true;
+            } else {
+                m_hover_top = hover_row_y + hover_row_height / 2;
+                m_hover_bottom = hover_row_y + hover_row_height;
+                row->get_style_context()->add_class("drag-hover-bottom");
+                row->get_style_context()->remove_class("drag-hover-top");
+                m_top = false;
+            }
+        }
+
+        if (m_hover_row != nullptr && m_hover_row != row) {
+            if (old_top)
+                m_hover_row->get_style_context()->remove_class("drag-hover-top");
+            else
+                m_hover_row->get_style_context()->remove_class("drag-hover-bottom");
+        }
+
+        m_hover_row = row;
+    }
+
+    check_scroll(y);
+    if (m_should_scroll && !m_scrolling) {
+        m_scrolling = true;
+        Glib::signal_timeout().connect(sigc::mem_fun(*this, &DragListBox::scroll), SCROLL_DELAY);
+    }
+
+    return true;
+}
+
+void DragListBox::on_drag_leave(const Glib::RefPtr<Gdk::DragContext> &context, guint time) {
+    m_should_scroll = false;
+}
+
+void DragListBox::check_scroll(gint y) {
+    if (!get_focus_vadjustment())
+        return;
+
+    const double vadjustment_min = get_focus_vadjustment()->get_value();
+    const double vadjustment_max = get_focus_vadjustment()->get_page_size() + vadjustment_min;
+    const double show_min = std::max(0, y - SCROLL_DISTANCE);
+    const double show_max = std::min(get_focus_vadjustment()->get_upper(), static_cast<double>(y) + SCROLL_DISTANCE);
+    if (vadjustment_min > show_min) {
+        m_should_scroll = true;
+        m_scroll_up = true;
+    } else if (vadjustment_max < show_max) {
+        m_should_scroll = true;
+        m_scroll_up = false;
+    } else {
+        m_should_scroll = false;
+    }
+}
+
+bool DragListBox::scroll() {
+    if (m_should_scroll) {
+        if (m_scroll_up) {
+            get_focus_vadjustment()->set_value(get_focus_vadjustment()->get_value() - SCROLL_STEP_SIZE);
+        } else {
+            get_focus_vadjustment()->set_value(get_focus_vadjustment()->get_value() + SCROLL_STEP_SIZE);
+        }
+    } else {
+        m_scrolling = false;
+    }
+    return m_should_scroll;
+}
+
+void DragListBox::on_drag_data_received(const Glib::RefPtr<Gdk::DragContext> &context, int x, int y, const Gtk::SelectionData &selection_data, guint info, guint time) {
+    int index = 0;
+    if (m_hover_row != nullptr) {
+        if (m_top) {
+            index = m_hover_row->get_index() - 1;
+            m_hover_row->get_style_context()->remove_class("drag-hover-top");
+        } else {
+            index = m_hover_row->get_index();
+            m_hover_row->get_style_context()->remove_class("drag-hover-bottom");
+        }
+
+        Gtk::Widget *handle = *reinterpret_cast<Gtk::Widget *const *>(selection_data.get_data());
+        auto *row = dynamic_cast<Gtk::ListBoxRow *>(handle->get_ancestor(GTK_TYPE_LIST_BOX_ROW));
+
+        if (row != nullptr && row != m_hover_row) {
+            if (row->get_index() > index)
+                index += 1;
+            if (m_signal_on_drop.emit(row, index)) return;
+            row->get_parent()->remove(*row);
+            insert(*row, index);
+        }
+    }
+
+    m_drag_row = nullptr;
+}
+
+void DragListBox::add_draggable(Gtk::ListBoxRow *widget) {
+    widget->drag_source_set(m_entries, Gdk::BUTTON1_MASK, Gdk::ACTION_MOVE);
+    widget->signal_drag_begin().connect(sigc::bind<0>(sigc::mem_fun(*this, &DragListBox::row_drag_begin), widget));
+    widget->signal_drag_data_get().connect([this, widget](const Glib::RefPtr<Gdk::DragContext> &context, Gtk::SelectionData &selection_data, guint info, guint time) {
+        selection_data.set("GTK_LIST_BOX_ROW", 32, reinterpret_cast<const guint8 *>(&widget), sizeof(&widget));
+    });
+    add(*widget);
+}
+
+DragListBox::type_signal_on_drop DragListBox::signal_on_drop() {
+    return m_signal_on_drop;
+}

components/draglistbox.hpp

@@ -0,0 +1,45 @@
+#pragma once
+#include <gtkmm.h>
+
+class DragListBox : public Gtk::ListBox {
+public:
+    DragListBox();
+
+    void row_drag_begin(Gtk::Widget *widget, const Glib::RefPtr<Gdk::DragContext> &context);
+
+    bool on_drag_motion(const Glib::RefPtr<Gdk::DragContext> &context, gint x, gint y, guint time) override;
+
+    void on_drag_leave(const Glib::RefPtr<Gdk::DragContext> &context, guint time) override;
+
+    void check_scroll(gint y);
+
+    bool scroll();
+
+    void on_drag_data_received(const Glib::RefPtr<Gdk::DragContext> &context, int x, int y, const Gtk::SelectionData &selection_data, guint info, guint time) override;
+
+    void add_draggable(Gtk::ListBoxRow *widget);
+
+private:
+    Gtk::ListBoxRow *m_hover_row = nullptr;
+    Gtk::ListBoxRow *m_drag_row = nullptr;
+    bool m_top = false;
+    int m_hover_top = 0;
+    int m_hover_bottom = 0;
+    bool m_should_scroll = false;
+    bool m_scrolling = false;
+    bool m_scroll_up = false;
+
+    constexpr static int SCROLL_STEP_SIZE = 8;
+    constexpr static int SCROLL_DISTANCE = 30;
+    constexpr static int SCROLL_DELAY = 50;
+
+    const std::vector<Gtk::TargetEntry> m_entries = {
+        Gtk::TargetEntry("GTK_LIST_BOX_ROW", Gtk::TARGET_SAME_APP, 0),
+    };
+
+    using type_signal_on_drop = sigc::signal<bool, Gtk::ListBoxRow *, int /* new index */>;
+    type_signal_on_drop m_signal_on_drop;
+
+public:
+    type_signal_on_drop signal_on_drop(); // return true to prevent drop
+};

css/main.css

@@ -321,3 +321,11 @@
 .app-window colorswatch {
     box-shadow: 0 1px rgba(0, 0, 0, 0);
 }
+
+.drag-hover-top {
+    background: linear-gradient(to bottom, rgba(255, 66, 66, 0.65) 0%, rgba(0, 0, 0, 0) 35%);
+}
+
+.drag-hover-bottom {
+    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 65%, rgba(255, 66, 66, 0.65) 100%);
+}

discord/discord.cpp

@@ -571,6 +571,58 @@ void DiscordClient::ModifyRoleColor(Snowflake guild_id, Snowflake role_id, Gdk::
     ModifyRoleColor(guild_id, role_id, int_color, callback);
 }
 
+void DiscordClient::ModifyRolePosition(Snowflake guild_id, Snowflake role_id, int position, sigc::slot<void(bool success)> callback) {
+    const auto roles = GetGuild(guild_id)->FetchRoles();
+    if (position > roles.size()) return;
+    // gay and makes you send every role in between new and old position
+    size_t index_from = -1, index_to = -1;
+    for (size_t i = 0; i < roles.size(); i++) {
+        const auto &role = roles[i];
+        if (role.ID == role_id)
+            index_from = i;
+        else if (role.Position == position)
+            index_to = i;
+        if (index_from != -1 && index_to != -1) break;
+    }
+
+    if (index_from == -1 || index_to == -1) return;
+
+    int dir;
+    size_t range_from, range_to;
+    if (index_to > index_from) {
+        dir = 1;
+        range_from = index_from + 1;
+        range_to = index_to + 1;
+    } else {
+        dir = -1;
+        range_from = index_to;
+        range_to = index_from;
+    }
+
+    ModifyGuildRolePositionsObject obj;
+
+    obj.Positions.push_back({ roles[index_from].ID, position });
+    for (size_t i = range_from; i < range_to; i++)
+        obj.Positions.push_back({ roles[i].ID, roles[i].Position + dir });
+
+    m_http.MakePATCH("/guilds/" + std::to_string(guild_id) + "/roles", nlohmann::json(obj).dump(), [this, callback](const http::response_type &response) {
+        callback(CheckCode(response));
+    });
+}
+
+bool DiscordClient::CanModifyRole(Snowflake guild_id, Snowflake role_id, Snowflake user_id) const {
+    const auto guild = *GetGuild(guild_id);
+    if (guild.OwnerID == user_id) return true;
+    const auto role = *GetRole(role_id);
+    const auto has_modify = HasGuildPermission(user_id, guild_id, Permission::MANAGE_CHANNELS);
+    const auto highest = GetMemberHighestRole(guild_id, user_id);
+    return has_modify && highest.has_value() && highest->Position > role.Position;
+}
+
+bool DiscordClient::CanModifyRole(Snowflake guild_id, Snowflake role_id) const {
+    return CanModifyRole(guild_id, role_id, GetUserData().ID);
+}
+
 std::vector<BanData> DiscordClient::GetBansInGuild(Snowflake guild_id) {
     return m_store.GetBans(guild_id);
 }

discord/discord.hpp

@@ -127,7 +127,10 @@ public:
     void ModifyRoleName(Snowflake guild_id, Snowflake role_id, const Glib::ustring &name, sigc::slot<void(bool success)> callback);
     void ModifyRoleColor(Snowflake guild_id, Snowflake role_id, uint32_t color, sigc::slot<void(bool success)> callback);
     void ModifyRoleColor(Snowflake guild_id, Snowflake role_id, Gdk::RGBA color, sigc::slot<void(bool success)> callback);
+    void ModifyRolePosition(Snowflake guild_id, Snowflake role_id, int position, sigc::slot<void(bool success)> callback);
 
+    bool CanModifyRole(Snowflake guild_id, Snowflake role_id) const;
+    bool CanModifyRole(Snowflake guild_id, Snowflake role_id, Snowflake user_id) const;
 
     // real client doesn't seem to use the single role endpoints so neither do we
     template<typename Iter>

discord/httpclient.cpp

@@ -1,5 +1,4 @@
 #include "httpclient.hpp"
-#include "httpclient.hpp"
 
 //#define USE_LOCAL_PROXY
 HTTPClient::HTTPClient(std::string api_base)

discord/objects.cpp

@@ -376,3 +376,12 @@ void to_json(nlohmann::json &j, const ModifyGuildRoleObject &m) {
     if (m.Permissions.has_value())
         j["permissions"] = std::to_string(static_cast<uint64_t>(*m.Permissions));
 }
+
+void to_json(nlohmann::json &j, const ModifyGuildRolePositionsObject::PositionParam &m) {
+    j["id"] = m.ID;
+    JS_IF("position", m.Position);
+}
+
+void to_json(nlohmann::json &j, const ModifyGuildRolePositionsObject &m) {
+    j = m.Positions;
+}

discord/objects.hpp

@@ -526,3 +526,15 @@ struct ModifyGuildRoleObject {
 
     friend void to_json(nlohmann::json &j, const ModifyGuildRoleObject &m);
 };
+
+struct ModifyGuildRolePositionsObject {
+    struct PositionParam {
+        Snowflake ID;
+        std::optional<int> Position; // no idea why this can be optional
+
+        friend void to_json(nlohmann::json &j, const PositionParam &m);
+    };
+    std::vector<PositionParam> Positions;
+
+    friend void to_json(nlohmann::json &j, const ModifyGuildRolePositionsObject &m);
+};

windows/guildsettings/rolespane.cpp

@@ -28,23 +28,13 @@ void GuildSettingsRolesPane::OnRoleSelect(Snowflake role_id) {
     auto &discord = Abaddon::Get().GetDiscordClient();
     const auto role = *discord.GetRole(role_id);
     m_roles_perms.SetRole(role);
-
-    const auto self_id = discord.GetUserData().ID;
-
-    const auto is_owner = discord.GetGuild(GuildID)->OwnerID == self_id;
-    if (is_owner)
-        m_roles_perms.set_sensitive(true);
-    else {
-        const bool can_modify = discord.HasGuildPermission(self_id, GuildID, Permission::MANAGE_ROLES);
-        if (!can_modify) {
-            m_roles_perms.set_sensitive(false);
-        } else {
-            const auto highest = discord.GetMemberHighestRole(GuildID, self_id);
-            m_roles_perms.set_sensitive(highest.has_value() && highest->Position > role.Position);
-        }
-    }
+    m_roles_perms.set_sensitive(discord.CanModifyRole(GuildID, role_id));
 }
 
+static std::vector<Gtk::TargetEntry> g_target_entries = {
+    Gtk::TargetEntry("GTK_LIST_ROLES_ROW", Gtk::TARGET_SAME_APP, 0)
+};
+
 GuildSettingsRolesPaneRoles::GuildSettingsRolesPaneRoles(Snowflake guild_id)
     : Gtk::Box(Gtk::ORIENTATION_VERTICAL)
     , GuildID(guild_id) {
@@ -61,19 +51,47 @@ GuildSettingsRolesPaneRoles::GuildSettingsRolesPaneRoles(Snowflake guild_id)
             m_signal_role_select.emit(selected->RoleID);
     });
 
+    m_list.set_focus_vadjustment(m_list_scroll.get_vadjustment());
+    m_list.signal_on_drop().connect([this](Gtk::ListBoxRow *row_, int new_index) -> bool {
+        if (auto *row = dynamic_cast<GuildSettingsRolesPaneRolesListItem *>(row_)) {
+            auto &discord = Abaddon::Get().GetDiscordClient();
+            const auto num_rows = m_list.get_children().size();
+            const auto new_pos = num_rows - new_index - 1;
+            if (row->RoleID == GuildID) return true; // moving role @everyone
+            if (new_index == num_rows) return true;  // trying to move row below @everyone
+            // make sure it wont modify a neighbor role u dont have perms to modify
+            if (!discord.CanModifyRole(GuildID, row->RoleID)) return false;
+            const auto cb = [this](bool success) {
+                if (!success) {
+                    Gtk::MessageDialog dlg("Failed to set role position", false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
+                    dlg.set_position(Gtk::WIN_POS_CENTER_ON_PARENT);
+                    dlg.run();
+                }
+            };
+            discord.ModifyRolePosition(GuildID, row->RoleID, new_pos, sigc::track_obj(cb, *this));
+            return true;
+        }
+        return false;
+    });
+
     auto &discord = Abaddon::Get().GetDiscordClient();
     discord.signal_role_create().connect(sigc::mem_fun(*this, &GuildSettingsRolesPaneRoles::OnRoleCreate));
     discord.signal_role_delete().connect(sigc::mem_fun(*this, &GuildSettingsRolesPaneRoles::OnRoleDelete));
 
     const auto guild = *discord.GetGuild(GuildID);
     const auto roles = guild.FetchRoles();
+    const bool can_modify = discord.HasGuildPermission(discord.GetUserData().ID, GuildID, Permission::MANAGE_ROLES);
     for (const auto &role : roles) {
         auto *row = Gtk::manage(new GuildSettingsRolesPaneRolesListItem(guild, role));
+        row->drag_source_set(g_target_entries, Gdk::BUTTON1_MASK, Gdk::ACTION_MOVE);
         row->set_margin_start(5);
         row->set_halign(Gtk::ALIGN_FILL);
         row->show();
         m_rows[role.ID] = row;
-        m_list.add(*row);
+        if (can_modify)
+            m_list.add_draggable(row);
+        else
+            m_list.add(*row);
     }
 
     m_list.set_sort_func([this](Gtk::ListBoxRow *rowa_, Gtk::ListBoxRow *rowb_) -> int {
@@ -108,12 +126,16 @@ GuildSettingsRolesPaneRoles::GuildSettingsRolesPaneRoles(Snowflake guild_id)
 void GuildSettingsRolesPaneRoles::OnRoleCreate(Snowflake guild_id, Snowflake role_id) {
     if (guild_id != GuildID) return;
     auto &discord = Abaddon::Get().GetDiscordClient();
+    const bool can_modify = discord.HasGuildPermission(discord.GetUserData().ID, guild_id, Permission::MANAGE_ROLES);
     const auto guild = *discord.GetGuild(guild_id);
     const auto role = *discord.GetRole(role_id);
     auto *row = Gtk::manage(new GuildSettingsRolesPaneRolesListItem(guild, role));
     row->show();
     m_rows[role_id] = row;
-    m_list.add(*row);
+    if (can_modify)
+        m_list.add_draggable(row);
+    else
+        m_list.add(*row);
 }
 
 void GuildSettingsRolesPaneRoles::OnRoleDelete(Snowflake guild_id, Snowflake role_id) {
@@ -205,6 +227,7 @@ GuildSettingsRolesPaneInfo::GuildSettingsRolesPaneInfo(Snowflake guild_id)
             if (!success) {
                 m_color_button.set_rgba(IntToRGBA(discord.GetRole(RoleID)->Color));
                 Gtk::MessageDialog dlg("Failed to set role color", false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
+                dlg.set_position(Gtk::WIN_POS_CENTER_ON_PARENT);
                 dlg.run();
             }
         };
@@ -364,6 +387,7 @@ void GuildSettingsRolesPaneInfo::UpdateRoleName() {
         if (!success) {
             m_role_name.set_text(discord.GetRole(RoleID)->Name);
             Gtk::MessageDialog dlg("Failed to set role name", false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
+            dlg.set_position(Gtk::WIN_POS_CENTER_ON_PARENT);
             dlg.run();
         }
     };

windows/guildsettings/rolespane.hpp

@@ -2,6 +2,7 @@
 #include <gtkmm.h>
 #include <unordered_map>
 #include "../../discord/guild.hpp"
+#include "../../components/draglistbox.hpp"
 
 class GuildSettingsRolesPaneRolesListItem : public Gtk::ListBoxRow {
 public:
@@ -32,7 +33,7 @@ private:
 
     Gtk::Entry m_search;
     Gtk::ScrolledWindow m_list_scroll;
-    Gtk::ListBox m_list;
+    DragListBox m_list;
 
     typedef sigc::signal<void, Snowflake /* role_id */> type_signal_role_select;
     type_signal_role_select m_signal_role_select;