leftwm_core/handlers/

command_handler.rs

#![allow(clippy::wildcard_imports)]

mod scratchpad_handler;

use leftwm_layouts::geometry::{Direction as FocusDirection, Rect};
// Make public to the rest of the crate without exposing other internal
// details of the scratchpad handling code
pub use scratchpad_handler::{Direction, ReleaseScratchPadOption};

use super::*;
use crate::command::FocusDeltaBehavior;
use crate::display_action::DisplayAction;
use crate::display_servers::DisplayServer;
use crate::layouts::{self, MAIN_AND_DECK, MONOCLE};
use crate::models::{Handle, TagId, WindowState};
use crate::state::State;
use crate::utils::helpers;
use crate::utils::helpers::relative_find;
use crate::{config::Config, models::FocusBehaviour};

impl<H: Handle, C: Config, SERVER: DisplayServer<H>> Manager<H, C, SERVER> {
    /* When adding a command
     * please update src/utils/command_pipe and leftwm/src/command if:
     * - a command is introduced or renamed
     * please also update src/bin/leftwm-check if any of the following apply after your update:
     * - a command now requires a value
     * - a command no longer requires a value
     * - a new command is introduced that requires a value
     *  */
    /// Processes a command and invokes the associated function.
    pub fn command_handler(&mut self, command: &Command<H>) -> bool {
        process_internal(self, command).unwrap_or(false)
    }
}

macro_rules! move_focus_common_vars {
    ($func:ident ($state:expr_2021 $(, $arg:expr_2021 )* $(,)? )) => {{
        let handle = $state.focus_manager.window(&$state.windows)?.handle;
        let tag_id = $state.focus_manager.tag(0)?;
        let ws_id = $state.focus_manager.workspace(&$state.workspaces)?.id;
        let layout = Some($state.layout_manager.layout(ws_id, tag_id).name.to_owned());

        let for_active_workspace =
            |x: &Window<H>| -> bool { x.tag == Some(tag_id) && x.is_managed() };

        let to_reorder = helpers::vec_extract(&mut $state.windows, for_active_workspace);
        $func($state, handle, layout.as_ref(), to_reorder, $($arg),*)
    }};
}

fn process_internal<H: Handle, C: Config, SERVER: DisplayServer<H>>(
    manager: &mut Manager<H, C, SERVER>,
    command: &Command<H>,
) -> Option<bool> {
    let state = &mut manager.state;
    match command {
        Command::ToggleScratchPad(name) => scratchpad_handler::toggle_scratchpad(manager, name),
        Command::AttachScratchPad { window, scratchpad } => {
            scratchpad_handler::attach_scratchpad(*window, scratchpad, manager)
        }
        Command::ReleaseScratchPad { window, tag } => {
            scratchpad_handler::release_scratchpad(window.clone(), *tag, manager)
        }

        Command::NextScratchPadWindow { scratchpad } => {
            scratchpad_handler::cycle_scratchpad_window(manager, scratchpad, Direction::Forward)
        }
        Command::PrevScratchPadWindow { scratchpad } => {
            scratchpad_handler::cycle_scratchpad_window(manager, scratchpad, Direction::Backward)
        }

        Command::ToggleMaximized => toggle_state(state, WindowState::Maximized),
        Command::ToggleFullScreen => toggle_state(state, WindowState::Fullscreen),
        Command::ToggleSticky => toggle_state(state, WindowState::Sticky),
        Command::ToggleAbove => toggle_state(state, WindowState::Above),

        Command::SendWindowToTag { window, tag } => move_to_tag(*window, *tag, manager),
        Command::MoveWindowToNextTag { follow } => move_to_tag_relative(manager, *follow, 1),
        Command::MoveWindowToPreviousTag { follow } => move_to_tag_relative(manager, *follow, -1),
        Command::MoveWindowToLastWorkspace => move_to_last_workspace(state),
        Command::MoveWindowToNextWorkspace => move_window_to_workspace_change(manager, 1),
        Command::MoveWindowToPreviousWorkspace => move_window_to_workspace_change(manager, -1),
        Command::MoveWindowUp => move_focus_common_vars!(move_window_change(state, -1)),
        Command::MoveWindowDown => move_focus_common_vars!(move_window_change(state, 1)),
        Command::MoveWindowTop { swap } => move_focus_common_vars!(move_window_top(state, *swap)),
        Command::MoveWindowAt(param) => {
            move_focus_common_vars!(move_window_direction(state, *param))
        }
        Command::SwapWindowTop { swap } => move_focus_common_vars!(swap_window_top(state, *swap)),

        Command::GoToTag { tag, swap } => goto_tag(state, *tag, *swap),
        Command::ReturnToLastTag => return_to_last_tag(state),

        Command::CloseWindow => close_window(state),
        Command::SwapScreens => swap_tags(state),
        Command::NextLayout => next_layout(state),
        Command::PreviousLayout => previous_layout(state),

        Command::SetLayout(layout) => set_layout(layout.as_str(), state),

        Command::FloatingToTile => floating_to_tile(state),
        Command::TileToFloating => tile_to_floating(state),
        Command::ToggleFloating => toggle_floating(state),

        Command::FocusNextTag { behavior } => match *behavior {
            FocusDeltaBehavior::Default => focus_tag_change(state, 1),
            FocusDeltaBehavior::IgnoreEmpty => focus_next_used_tag(state),
            FocusDeltaBehavior::IgnoreUsed => focus_next_empty_tag(state),
        },
        Command::FocusPreviousTag { behavior } => match *behavior {
            FocusDeltaBehavior::Default => focus_tag_change(state, -1),
            FocusDeltaBehavior::IgnoreEmpty => focus_previous_used_tag(state),
            FocusDeltaBehavior::IgnoreUsed => focus_previous_empty_tag(state),
        },
        Command::FocusWindow(param) => focus_window(state, param),
        Command::FocusWindowUp => move_focus_common_vars!(focus_window_change(state, -1)),
        Command::FocusWindowDown => move_focus_common_vars!(focus_window_change(state, 1)),
        Command::FocusWindowTop { swap } => focus_window_top(state, *swap),
        Command::FocusWindowAt(param) => focus_window_direction(state, *param),
        Command::FocusWorkspaceNext => focus_workspace_change(state, 1),
        Command::FocusWorkspacePrevious => focus_workspace_change(state, -1),

        Command::SoftReload => {
            // Make sure the currently focused window is saved for the tag.
            if let Some((handle, Some(tag))) = state
                .focus_manager
                .window(&state.windows)
                .map(|w| (w.handle, w.tag))
            {
                let old_handle = state
                    .focus_manager
                    .tags_last_window
                    .entry(tag)
                    .or_insert(handle);
                *old_handle = handle;
            }
            manager.config.save_state(&manager.state);
            manager.hard_reload();
            None
        }
        Command::HardReload => {
            manager.hard_reload();
            None
        }

        Command::RotateTag => rotate_tag(state),

        Command::IncreaseMainWidth(delta) | Command::IncreaseMainSize(delta) => {
            change_main_size(state, *delta, 1)
        }
        Command::DecreaseMainWidth(delta) | Command::DecreaseMainSize(delta) => {
            change_main_size(state, *delta, -1)
        }
        Command::IncreaseMainCount() => change_main_count(state, 1),
        Command::DecreaseMainCount() => change_main_count(state, -1),
        Command::SetMarginMultiplier(multiplier) => set_margin_multiplier(state, *multiplier),
        Command::SendWorkspaceToTag(ws_index, tag_index) => {
            Some(send_workspace_to_tag(state, *ws_index, *tag_index))
        }
        Command::CloseAllOtherWindows => close_all_other_windows(state),
        Command::Other(cmd) => Some(C::command_handler(cmd, manager)),
    }
}

fn focus_next_empty_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let used_tags: Vec<usize> = state.windows.iter().filter_map(|w| w.tag).collect();
    let unused_tags: Vec<usize> = state
        .tags
        .normal()
        .iter()
        .filter(|t| !used_tags.contains(&t.to_owned().id))
        .map(|t| t.id)
        .collect();
    let next_unused_tag = match unused_tags
        .iter()
        .find(|t| **t > state.focus_manager.tag(0).unwrap_or_default())
    {
        Some(t) => t,
        None => match unused_tags.first() {
            Some(t) => t,
            None => return Some(false),
        },
    };
    state.goto_tag_handler(*next_unused_tag)
}

fn focus_previous_empty_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let used_tags: Vec<usize> = state.windows.iter().filter_map(|w| w.tag).collect();
    let unused_tags: Vec<usize> = state
        .tags
        .normal()
        .iter()
        .filter(|t| !used_tags.contains(&t.to_owned().id))
        .map(|t| t.id)
        .collect();
    let previous_unused_tag = match unused_tags
        .iter()
        .rfind(|t| **t < state.focus_manager.tag(0).unwrap_or_default())
    {
        Some(t) => t,
        None => match unused_tags.last() {
            Some(t) => t,
            None => return Some(false),
        },
    };
    state.goto_tag_handler(*previous_unused_tag)
}

fn focus_next_used_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let mut used_tags: Vec<usize> = state.windows.iter().filter_map(|w| w.tag).collect();
    used_tags.sort_unstable();
    let next_used_tag = match used_tags
        .iter()
        .find(|t| **t > state.focus_manager.tag(0).unwrap_or_default())
    {
        Some(t) => t,
        None => match used_tags.first() {
            Some(t) => t,
            None => return Some(false),
        },
    };
    state.goto_tag_handler(*next_used_tag)
}

fn focus_previous_used_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let mut used_tags: Vec<usize> = state.windows.iter().filter_map(|w| w.tag).collect();
    used_tags.sort_unstable();
    used_tags.reverse();
    let previous_used_tag = match used_tags
        .iter()
        .find(|t| **t < state.focus_manager.tag(0).unwrap_or_default())
    {
        Some(t) => t,
        None => match used_tags.first() {
            Some(t) => t,
            None => return Some(false),
        },
    };
    state.goto_tag_handler(*previous_used_tag)
}

fn toggle_state<H: Handle>(state: &mut State<H>, window_state: WindowState) -> Option<bool> {
    let window = state.focus_manager.window(&state.windows)?;
    let handle = window.handle;
    let toggle_to = !window.states.contains(&window_state);
    let act = DisplayAction::SetState(handle, toggle_to, window_state);
    state.actions.push_back(act);
    state.handle_window_focus(&handle);
    match window_state {
        WindowState::Fullscreen | WindowState::Maximized => Some(true),
        _ => Some(false),
    }
}

fn move_to_tag<H: Handle, C: Config, SERVER: DisplayServer<H>>(
    window: Option<WindowHandle<H>>,
    tag_id: TagId,
    manager: &mut Manager<H, C, SERVER>,
) -> Option<bool> {
    let tag = manager.state.tags.get(tag_id)?.clone();

    // In order to apply the correct margin multiplier we want to copy this value
    // from any window already present on the target tag
    let margin_multiplier = match manager.state.windows.iter().find(|w| w.has_tag(&tag.id)) {
        Some(w) => w.margin_multiplier(),
        None => 1.0,
    };

    let handle = window.or(*manager.state.focus_manager.window_history.front()?)?;
    // Only handle the focus when moving the focused window.
    let handle_focus = window.is_none();
    // Focus the next or previous window on the workspace.
    let new_handle = if handle_focus {
        manager.get_next_or_previous_handle(&handle)
    } else {
        None
    };

    let window = manager
        .state
        .windows
        .iter_mut()
        .find(|w| w.handle == handle)?;

    window.untag();
    window.set_floating(false);
    window.tag(&tag.id);
    window.apply_margin_multiplier(margin_multiplier);
    let act = DisplayAction::SetWindowTag(window.handle, Some(tag.id));
    manager.state.actions.push_back(act);

    manager.state.sort_windows();
    manager
        .state
        .handle_single_border(manager.config.border_width());
    if handle_focus {
        if let Some(new_handle) = new_handle {
            manager.state.focus_window(&new_handle);
        } else {
            let act = DisplayAction::Unfocus(Some(handle), false);
            manager.state.actions.push_back(act);
            manager.state.focus_manager.window_history.push_front(None);
        }
    }
    Some(true)
}

/// Move currently focused window to tag relative to current tag
///
/// Conditionally allow focus to follow the window to the target tag
fn move_to_tag_relative<H: Handle, C: Config, SERVER: DisplayServer<H>>(
    manager: &mut Manager<H, C, SERVER>,
    follow: bool,
    delta: i32,
) -> Option<bool> {
    // Map indexing from 1..len to 0..(len - 1)
    let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default() - 1;
    // apply euclidean division reminder to the result of offseting to wrap around tags vector
    // and add 1 to remap back to 1..len indexing
    let tags_len = manager.state.tags.normal().len() as isize;
    let desired_tag = (current_tag as isize + delta as isize).rem_euclid(tags_len) + 1;
    let desired_tag = desired_tag as usize;

    move_to_tag(None, desired_tag, manager);
    if follow {
        let moved_window = *manager.state.focus_manager.window_history.get(1)?;
        manager.state.goto_tag_handler(desired_tag);
        manager.state.handle_window_focus(&moved_window?);
    }
    Some(true)
}

fn move_window_to_workspace_change<H: Handle, C: Config, SERVER: DisplayServer<H>>(
    manager: &mut Manager<H, C, SERVER>,
    delta: i32,
) -> Option<bool> {
    let current = manager
        .state
        .focus_manager
        .workspace(&manager.state.workspaces)?;
    let workspace =
        helpers::relative_find(&manager.state.workspaces, |w| w == current, delta, true)?.clone();

    let tag_id = workspace.tag?;
    move_to_tag(None, tag_id, manager)
}

fn goto_tag<H: Handle>(
    state: &mut State<H>,
    input_tag: TagId,
    current_tag_swap: bool,
) -> Option<bool> {
    let current_tag = state.focus_manager.tag(0).unwrap_or_default();
    let previous_tag = state.focus_manager.tag(1).unwrap_or_default();
    let destination_tag = if current_tag_swap && current_tag == input_tag {
        previous_tag
    } else {
        input_tag
    };
    state.goto_tag_handler(destination_tag)
}

fn return_to_last_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let previous_tag = state.focus_manager.tag(1).unwrap_or_default();
    state.goto_tag_handler(previous_tag)
}

fn focus_window<H: Handle>(state: &mut State<H>, param: &str) -> Option<bool> {
    match param.parse::<usize>() {
        Ok(index) if index > 0 => {
            // 1-based index seems more user-friendly to me in this context
            let handle = state
                .windows
                .iter()
                .filter(|w| w.visible())
                .nth(index - 1)?
                .handle;

            state.handle_window_focus(&handle);
            None
        }
        Err(_) => focus_window_by_class(state, param),
        Ok(_) => None,
    }
}

// TODO: add comment
fn focus_window_direction<H: Handle>(state: &mut State<H>, dir: FocusDirection) -> Option<bool> {
    let workspace = state.focus_manager.workspace(&state.workspaces)?.rect();
    let mut rects: Vec<Rect> = vec![];
    let cur_window = state.focus_manager.window(&state.windows)?;

    let mut cur = None;

    for (i, x) in state.windows.iter().filter(|w| w.visible()).enumerate() {
        if cur_window.handle.eq(&x.handle) {
            cur = Some(i);
        }
        rects.push(Rect::new(
            x.x() - workspace.x,
            x.y() - workspace.y,
            x.width() as u32,
            x.height() as u32,
        ));
    }

    let next_window = FocusDirection::find_neighbor(&rects, cur?, dir, &workspace);

    match next_window {
        Some(next) => {
            // update current focussed window
            let handle = state
                .windows
                .iter()
                .filter(|w| w.visible())
                .nth(next)?
                .handle;
            state.handle_window_focus(&handle);
            Some(true)
        }
        None => None,
    }
}

fn focus_window_by_class<H: Handle>(state: &mut State<H>, window_class: &str) -> Option<bool> {
    let is_target = |w: &Window<H>| -> bool {
        w.res_name
            .as_ref()
            .zip(w.res_class.as_ref())
            .is_some_and(|(res_name, res_class)| {
                window_class == res_name || window_class == res_class
            })
    };

    let current_window = state.focus_manager.window(&state.windows)?;
    let target_window = if is_target(current_window) {
        let previous_window_handle = state.focus_manager.window_history.get(1);
        state
            .windows
            .iter()
            .find(|w| Some(&Some(w.handle)) == previous_window_handle)
            .cloned()
    } else {
        state.windows.iter().find(|w| is_target(w)).cloned()
    }?;

    let handle = target_window.handle;

    if target_window.visible() {
        state.handle_window_focus(&handle);
        return None;
    }

    let tag_id = target_window.tag?;
    state.goto_tag_handler(tag_id)?;

    match state
        .focus_manager
        .workspace(&state.workspaces)
        .map(|ws| state.layout_manager.layout(ws.id, tag_id))
    {
        Some(layout) if layout.is_monocle() || layout.is_main_and_deck() => {
            let mut windows = helpers::vec_extract(&mut state.windows, |w| {
                w.has_tag(&tag_id) && w.is_managed() && !w.floating()
            });

            let cycle = |wins: &mut Vec<Window<H>>, s: &mut State<H>| {
                let window_index = wins.iter().position(|w| w.handle == handle).unwrap_or(0);
                _ = helpers::cycle_vec(wins, -(window_index as i32));
                s.windows.append(wins);
            };

            if layout.is_monocle() && windows.len() > 1 {
                cycle(&mut windows, state);
            } else if layout.is_main_and_deck() && windows.len() > 2 {
                let main_window = windows.remove(0);
                state.windows.push(main_window);
                cycle(&mut windows, state);
            } else {
                state.windows.append(&mut windows);
            }

            state.handle_window_focus(&handle);
            Some(true)
        }
        Some(_) => {
            state.handle_window_focus(&handle);
            Some(true)
        }
        None => None,
    }
}

/// Focus the adjacent tags, depending on the delta.
/// A delta of 1 means "next tag", a delta of -1 means "previous tag".
fn focus_tag_change<H: Handle>(state: &mut State<H>, delta: i8) -> Option<bool> {
    let current_tag = state.focus_manager.tag(0)?;
    let tags = state.tags.normal();
    let relative_tag_id = relative_find(tags, |tag| tag.id == current_tag, i32::from(delta), true)
        .map(|tag| tag.id)?;
    state.goto_tag_handler(relative_tag_id)
}

fn swap_tags<H: Handle>(state: &mut State<H>) -> Option<bool> {
    if state.workspaces.len() >= 2 && state.focus_manager.workspace_history.len() >= 2 {
        let hist_a = *state.focus_manager.workspace_history.front()?;
        let hist_b = *state.focus_manager.workspace_history.get(1)?;
        // Update workspace tags
        let mut temp = None;
        std::mem::swap(&mut state.workspaces.get_mut(hist_a)?.tag, &mut temp);
        std::mem::swap(&mut state.workspaces.get_mut(hist_b)?.tag, &mut temp);
        std::mem::swap(&mut state.workspaces.get_mut(hist_a)?.tag, &mut temp);
        // Update dock tags and layouts.
        state.update_static();
        return Some(true);
    }
    if state.workspaces.len() == 1 {
        let last = *state.focus_manager.tag_history.get(1)?;
        return state.goto_tag_handler(last);
    }
    None
}

// TODO: closing windows breaks focus, see gh-1204
fn close_window<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let window = state.focus_manager.window(&state.windows)?;
    if window.is_managed() {
        let act = DisplayAction::KillWindow(window.handle);
        state.actions.push_back(act);
    }
    None
}

fn move_to_last_workspace<H: Handle>(state: &mut State<H>) -> Option<bool> {
    if state.workspaces.len() >= 2 && state.focus_manager.workspace_history.len() >= 2 {
        let index = *state.focus_manager.workspace_history.get(1)?;
        let wp_tags = state.workspaces.get(index)?.tag;
        let window = state.focus_manager.window_mut(&mut state.windows)?;
        window.tag = wp_tags;
        return Some(true);
    }
    None
}

fn next_layout<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    state
        .layout_manager
        .cycle_next_layout(workspace.id, workspace.tag.unwrap_or(1));
    Some(true)
}

fn previous_layout<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    state
        .layout_manager
        .cycle_previous_layout(workspace.id, workspace.tag.unwrap_or(1));
    Some(true)
}

fn set_layout<H: Handle>(layout: &str, state: &mut State<H>) -> Option<bool> {
    let tag_id = state.focus_manager.tag(0)?;
    // When switching to Monocle or MainAndDeck layout while in Driven
    // or ClickTo focus mode, we check if the focus is given to a visible window.
    if state.focus_manager.behaviour != FocusBehaviour::Sloppy {
        // if the currently focused window is floating, nothing will be done
        let focused_window = state.focus_manager.window_history.front();
        let is_focused_floating = match state
            .windows
            .iter()
            .find(|w| Some(&Some(w.handle)) == focused_window)
        {
            Some(w) => w.floating(),
            None => false,
        };
        if !is_focused_floating {
            let mut to_focus = None;

            if layout == layouts::MONOCLE {
                to_focus = state
                    .windows
                    .iter()
                    .find(|w| w.has_tag(&tag_id) && w.is_managed() && !w.floating());
            } else if layout == layouts::MAIN_AND_DECK
                && let Some(&Some(h)) = focused_window
            {
                let mut tags_windows = state
                    .windows
                    .iter()
                    .filter(|w| w.has_tag(&tag_id) && w.is_managed() && !w.floating());

                let mw = tags_windows.next();
                let tdw = tags_windows.next();

                if let (Some(mw), Some(tdw)) = (mw, tdw) {
                    // If the focused window is the main or the top of the deck, we don't do
                    // anything.
                    if mw.handle != h && tdw.handle != h {
                        to_focus = Some(tdw);
                    }
                }
            }

            if let Some(handle) = to_focus.map(|w| w.handle) {
                state.focus_window(&handle);
            }
        }
    }
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    state
        .layout_manager
        .set_layout(workspace.id, tag_id, layout);
    Some(true)
}

fn floating_to_tile<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let workspace = state.focus_manager.workspace(&state.workspaces)?;
    let window = state.focus_manager.window_mut(&mut state.windows)?;
    if window.must_float() {
        return None;
    }
    // Not ideal as is_floating and must_float are connected so have to check
    // them separately
    if !window.floating() {
        return None;
    }
    let handle = window.handle;
    if window.snap_to_workspace(workspace) {
        state.sort_windows();
    }
    state.handle_window_focus(&handle);
    Some(true)
}

fn tile_to_floating<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let width = state.default_width;
    let height = state.default_height;
    let window = state.focus_manager.window_mut(&mut state.windows)?;

    if window.floating() {
        return None;
    }

    let mut normal = window.normal;
    let offset = window.container_size.unwrap_or_default();

    normal.set_x(normal.x() + window.margin.left as i32);
    normal.set_y(normal.y() + window.margin.top as i32);
    normal.set_w(width);
    normal.set_h(height);
    let floating = normal - offset;

    window.set_floating_offsets(Some(floating));
    window.start_loc = Some(floating);
    window.set_floating(true);

    let handle = window.handle;
    state.move_to_top(&handle);

    Some(true)
}

fn toggle_floating<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let window = state.focus_manager.window(&state.windows)?;
    if window.floating() {
        floating_to_tile(state)
    } else {
        tile_to_floating(state)
    }
}

fn move_window_change<H: Handle>(
    state: &mut State<H>,
    mut handle: WindowHandle<H>,
    layout: Option<&String>,
    mut to_reorder: Vec<Window<H>>,
    val: i32,
) -> Option<bool> {
    let is_handle = |x: &Window<H>| -> bool { x.handle == handle };
    if layout == Some(MONOCLE.to_string()).as_ref() {
        handle = helpers::relative_find(&to_reorder, is_handle, -val, true)?.handle;
        let _ = helpers::cycle_vec(&mut to_reorder, val);
    } else if layout == Some(MAIN_AND_DECK.to_string()).as_ref() {
        if let Some(index) = to_reorder.iter().position(|x: &Window<H>| !x.floating()) {
            let mut window_group = to_reorder.split_off(index + 1);
            if !to_reorder.iter().any(|w| w.handle == handle) {
                handle = helpers::relative_find(&window_group, is_handle, -val, true)?.handle;
            }
            _ = helpers::cycle_vec(&mut window_group, val);
            to_reorder.append(&mut window_group);
        }
    } else {
        _ = helpers::reorder_vec(&mut to_reorder, is_handle, val);
    }
    state.windows.append(&mut to_reorder);
    state.handle_window_focus(&handle);
    Some(true)
}

//val and layout aren't used which is a bit awkward
fn move_window_top<H: Handle>(
    state: &mut State<H>,
    handle: WindowHandle<H>,
    _layout: Option<&String>,
    mut to_reorder: Vec<Window<H>>,
    swap: bool,
) -> Option<bool> {
    // Moves the selected window at index 0 of the window list.
    // If the selected window is already at index 0, it is sent to index 1.
    let is_handle = |x: &Window<H>| -> bool { x.handle == handle };
    let list = &mut to_reorder;
    let len = list.len();
    let index = list.iter().position(is_handle)?;
    let item = list.get(index)?.clone();
    list.remove(index);
    dbg!(swap);
    let mut new_index: usize = match index {
        0 if swap => 1,
        _ => 0,
    };
    if new_index >= len {
        new_index -= len;
    }
    list.insert(new_index, item);

    state.windows.append(&mut to_reorder);
    // focus follows the window if it was not already on top of the stack
    if index > 0 {
        state.handle_window_focus(&handle);
    }
    Some(true)
}

fn move_window_direction<H: Handle>(
    state: &mut State<H>,
    mut handle: WindowHandle<H>,
    _layout: Option<&String>,
    mut to_reorder: Vec<Window<H>>,
    dir: FocusDirection,
) -> Option<bool> {
    let workspace = state.focus_manager.workspace(&state.workspaces)?.rect();
    let mut rects: Vec<Rect> = vec![];
    let mut cur = None;

    for (i, x) in to_reorder.iter().filter(|w| w.visible()).enumerate() {
        if handle.eq(&x.handle) {
            cur = Some(i);
        }
        rects.push(Rect::new(
            x.x() - workspace.x,
            x.y() - workspace.y,
            x.width() as u32,
            x.height() as u32,
        ));
    }

    let list = &mut to_reorder;
    if let Some(next) = FocusDirection::find_neighbor(&rects, cur?, dir, &workspace) {
        list.swap(cur?, next);
        handle = list.get(next)?.handle;
    }

    state.windows.append(&mut to_reorder);
    state.handle_window_focus(&handle);
    Some(true)
}

fn swap_window_top<H: Handle>(
    state: &mut State<H>,
    handle: WindowHandle<H>,
    _layout: Option<&String>,
    mut to_reorder: Vec<Window<H>>,
    swap: bool,
) -> Option<bool> {
    // Swaps the selected window to index 0 of the window list.
    // If the selected window is already at index 0, it is sent to index 1.
    let is_handle = |x: &Window<H>| -> bool { x.handle == handle };
    let list = &mut to_reorder;
    let len = list.len();
    let index = list.iter().position(is_handle)?;

    let mut new_index: usize = match index {
        0 if swap => 1,
        _ => 0,
    };

    if new_index >= len {
        new_index -= len;
    }
    list.swap(index, new_index);

    state.windows.append(&mut to_reorder);
    // focus follows the window if it was not already on top of the stack
    if index > 0 {
        state.handle_window_focus(&handle);
    }
    Some(true)
}

fn focus_window_change<H: Handle>(
    state: &mut State<H>,
    mut handle: WindowHandle<H>,
    layout: Option<&String>,
    mut to_reorder: Vec<Window<H>>,
    val: i32,
) -> Option<bool> {
    let is_handle = |x: &Window<H>| -> bool { x.handle == handle };
    if layout == Some(layouts::MONOCLE.to_string()).as_ref() {
        // For Monocle we want to also move windows up/down
        // Not the best solution but results
        // in desired behaviour
        handle = helpers::relative_find(&to_reorder, is_handle, -val, true)?.handle;
        let _ = helpers::cycle_vec(&mut to_reorder, val);
    } else if layout == Some(layouts::MAIN_AND_DECK.to_string()).as_ref() {
        let len = to_reorder.len() as i32;
        if len > 0 {
            let index = match to_reorder.iter().position(|x: &Window<H>| !x.floating()) {
                Some(i) => {
                    if i as i32 == len - 1 {
                        i
                    } else {
                        i + 1
                    }
                }
                None => len.saturating_sub(1) as usize,
            };
            let window_group = &to_reorder[..=index];
            handle = helpers::relative_find(window_group, is_handle, -val, true)?.handle;
        }
    } else if let Some(new_focused) = helpers::relative_find(&to_reorder, is_handle, val, true) {
        handle = new_focused.handle;
    }
    state.windows.append(&mut to_reorder);
    state.handle_window_focus(&handle);
    Some(layout == Some(layouts::MONOCLE.to_string()).as_ref())
}

fn focus_window_top<H: Handle>(state: &mut State<H>, swap: bool) -> Option<bool> {
    let tag = state.focus_manager.tag(0)?;
    let cur = state.focus_manager.window(&state.windows).map(|w| w.handle);
    let prev = state.focus_manager.tags_last_window.get(&tag).copied();
    let next = state
        .windows
        .iter()
        .find(|x| x.tag == Some(tag) && !x.floating() && x.is_managed())
        .map(|w| w.handle);

    match (next, cur, prev) {
        (Some(next), Some(cur), Some(prev)) if next == cur && swap => {
            state.handle_window_focus(&prev);
        }
        (Some(next), Some(cur), _) if next != cur => state.handle_window_focus(&next),
        _ => {}
    }
    None
}

fn close_all_other_windows<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let current_window: Option<WindowHandle<H>> =
        state.focus_manager.window(&state.windows).map(|w| w.handle);
    let current_workspace = state.focus_manager.workspace(&state.workspaces);

    for window in &state.windows {
        if window.handle.ne(&current_window?)
            && current_workspace?.is_displaying(window)
            && window.r#type.ne(&WindowType::Normal)
        {
            let act = DisplayAction::KillWindow(window.handle);
            state.actions.push_back(act);
        }
    }
    Some(true)
}

fn focus_workspace_change<H: Handle>(state: &mut State<H>, val: i32) -> Option<bool> {
    let current = state.focus_manager.workspace(&state.workspaces)?;
    let workspace = helpers::relative_find(&state.workspaces, |w| w == current, val, true)?.clone();

    if state.focus_manager.behaviour.is_sloppy() && state.focus_manager.sloppy_mouse_follows_focus {
        let action = workspace
            .tag
            .as_ref()
            .and_then(|tag| state.focus_manager.tags_last_window.get(tag))
            .map_or_else(
                || DisplayAction::MoveMouseOverPoint(workspace.xyhw.center()),
                |h| DisplayAction::MoveMouseOver(*h, true),
            );
        state.actions.push_back(action);
    }
    state.focus_workspace(&workspace);
    None
}

fn rotate_tag<H: Handle>(state: &mut State<H>) -> Option<bool> {
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    let workspace_id = workspace.id;
    let tag_id = state.focus_manager.tag(0)?;
    let def = state.layout_manager.layout_mut(workspace_id, tag_id);
    def.rotate(true);
    Some(true)
}

fn change_main_size<H: Handle>(state: &mut State<H>, delta: i32, factor: i8) -> Option<bool> {
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    let workspace_id = workspace.id;
    let tag_id = state.focus_manager.tag(0)?;
    let def = state.layout_manager.layout_mut(workspace_id, tag_id);
    def.change_main_size(delta * i32::from(factor), workspace.width());
    Some(true)
}

fn change_main_count<H: Handle>(state: &mut State<H>, factor: i8) -> Option<bool> {
    let workspace = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    let workspace_id = workspace.id;
    let tag_id = state.focus_manager.tag(0)?;
    let def = state.layout_manager.layout_mut(workspace_id, tag_id);
    match factor {
        1 => def.increase_main_window_count(),
        -1 => def.decrease_main_window_count(),
        _ => (),
    }
    Some(true)
}

fn set_margin_multiplier<H: Handle>(state: &mut State<H>, margin_multiplier: f32) -> Option<bool> {
    let ws = state.focus_manager.workspace_mut(&mut state.workspaces)?;
    ws.set_margin_multiplier(margin_multiplier);
    let tag = ws.tag;
    if state.windows.iter().any(|w| w.r#type == WindowType::Normal) {
        let for_active_workspace =
            |x: &Window<H>| -> bool { tag == x.tag && x.r#type == WindowType::Normal };
        let mut to_apply_margin_multiplier =
            helpers::vec_extract(&mut state.windows, for_active_workspace);
        for w in &mut to_apply_margin_multiplier {
            if let Some(ws) = state.focus_manager.workspace(&state.workspaces) {
                w.apply_margin_multiplier(ws.margin_multiplier());
            }
        }
        state.windows.append(&mut to_apply_margin_multiplier);
    }
    Some(true)
}

fn send_workspace_to_tag<H: Handle>(
    state: &mut State<H>,
    ws_index: usize,
    tag_index: usize,
) -> bool {
    // todo: address inconsistency of using the index instead of the id here
    if ws_index < state.workspaces.len() && tag_index < state.tags.len_normal() {
        let workspace = &state.workspaces[ws_index].clone();
        state.focus_workspace(workspace);
        state.goto_tag_handler(tag_index + 1);
        return true;
    }
    false
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::models::{MockHandle, Tags};

    fn mock_update(
        manager: &mut Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        >,
    ) {
        while let Some(act) = manager.state.actions.pop_front() {
            if let DisplayAction::SetState(window_handle, toggle_to, window_state) = act
                && let Some(window) = manager
                    .state
                    .windows
                    .iter_mut()
                    .find(|w| w.handle == window_handle)
                && (window_state == WindowState::Fullscreen
                    || window_state == WindowState::Maximized)
            {
                if toggle_to {
                    window.states = vec![window_state];
                } else {
                    window.states.retain(|s| s != &window_state);
                }
            }
        }
    }

    #[test]
    fn toggle_fullscreen() {
        let mut manager = Manager::new_test(vec!["1".to_string()]);
        manager.screen_create_handler(Screen::default());

        for i in 1..=3 {
            manager.window_created_handler(
                Window::new(WindowHandle::<MockHandle>(i), None, None),
                -1,
                -1,
            );
        }

        assert!(
            !manager
                .state
                .windows
                .iter()
                .any(|w| w.states.contains(&WindowState::Fullscreen))
        );

        manager.command_handler(&Command::ToggleFullScreen);

        mock_update(&mut manager);
        assert!(
            manager
                .state
                .windows
                .iter()
                .any(|w| w.states.contains(&WindowState::Fullscreen))
        );
    }

    #[test]
    fn toggle_maximized() {
        let mut manager = Manager::new_test(vec!["1".to_string()]);
        manager.screen_create_handler(Screen::default());

        for i in 1..=3 {
            manager.window_created_handler(
                Window::new(WindowHandle::<MockHandle>(i), None, None),
                -1,
                -1,
            );
        }

        assert!(
            !manager
                .state
                .windows
                .iter()
                .any(|w| w.states.contains(&WindowState::Maximized))
        );

        manager.command_handler(&Command::ToggleMaximized);

        mock_update(&mut manager);
        assert!(
            manager
                .state
                .windows
                .iter()
                .any(|w| w.states.contains(&WindowState::Maximized))
        );
    }

    #[test]
    fn fullscreen_window_sorting() {
        let mut manager = Manager::new_test(vec!["1".to_string()]);
        manager.screen_create_handler(Screen::default());

        for i in 1..=4 {
            manager.window_created_handler(
                Window::new(WindowHandle::<MockHandle>(i), None, None),
                -1,
                -1,
            );
        }

        manager.state.focus_window(&WindowHandle::<MockHandle>(2));
        manager.command_handler(&Command::ToggleMaximized);

        manager.state.focus_window(&WindowHandle::<MockHandle>(3));
        manager.command_handler(&Command::ToggleFullScreen);

        mock_update(&mut manager);
        manager.state.sort_windows();

        // Fullscreen(3) > maximized(2) > normal(1) + normal(4)
        let expected_order = vec![
            WindowHandle::<MockHandle>(3),
            WindowHandle::<MockHandle>(2),
            WindowHandle::<MockHandle>(1),
            WindowHandle::<MockHandle>(4),
        ];

        match manager.state.actions.front().unwrap() {
            DisplayAction::SetWindowOrder(order) => assert_eq!(order, &expected_order),
            _ => unreachable!("No other update should be left"),
        }
    }

    #[test]
    fn return_to_last_tag_should_go_back_to_last_tag() {
        let mut manager = Manager::new_test(vec![
            "A15".to_string(),
            "B24".to_string(),
            "C".to_string(),
            "6D4".to_string(),
            "E39".to_string(),
            "F67".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());
        manager.screen_create_handler(Screen::default());

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 1,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap();
        assert_eq!(current_tag, 1);

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 2,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default();
        assert_eq!(current_tag, 2);

        manager.command_handler(&Command::ReturnToLastTag);
        let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default();
        assert_eq!(current_tag, 1);
    }

    #[test]
    fn go_to_tag_should_return_false_if_no_screen_is_created() {
        let mut manager = Manager::new_test(vec![]);
        // no screen creation here
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 6,
            swap: false
        }));
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 2,
            swap: false
        }));
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 15,
            swap: false
        }));
    }

    #[test]
    fn go_to_tag_should_create_at_least_one_tag_per_screen_no_more() {
        let mut manager = Manager::new_test(vec![]);
        manager.screen_create_handler(Screen::default());
        manager.screen_create_handler(Screen::default());
        // no tag creation here but one tag per screen is created
        assert!(manager.command_handler(&Command::GoToTag {
            tag: 2,
            swap: false
        }));
        assert!(manager.command_handler(&Command::GoToTag {
            tag: 1,
            swap: false
        }));
        // we only have one tag per screen created automatically
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 3,
            swap: false
        }));
    }

    #[test]
    fn go_to_tag_should_return_false_on_invalid_input() {
        let mut manager = Manager::new_test(vec![]);
        manager.screen_create_handler(Screen::default());
        manager.state.tags = Tags::new();
        manager.state.tags.add_new("A15");
        manager.state.tags.add_new("B24");
        manager.state.tags.add_new("C");
        manager.state.tags.add_new("6D4");
        manager.state.tags.add_new("E39");
        manager.state.tags.add_new("F67");
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 0,
            swap: false
        }));
        assert!(!manager.command_handler(&Command::GoToTag {
            tag: 999,
            swap: false
        }));
    }

    #[test]
    fn go_to_tag_should_go_to_tag_and_set_history() {
        let mut manager = Manager::new_test(vec![
            "A15".to_string(),
            "B24".to_string(),
            "C".to_string(),
            "6D4".to_string(),
            "E39".to_string(),
            "F67".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());
        manager.screen_create_handler(Screen::default());

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 6,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap();
        assert_eq!(current_tag, 6);

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 2,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default();
        assert_eq!(current_tag, 2);

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 3,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default();
        assert_eq!(current_tag, 3);

        assert!(manager.command_handler(&Command::GoToTag {
            tag: 4,
            swap: false
        }));
        let current_tag = manager.state.focus_manager.tag(0).unwrap_or_default();
        assert_eq!(current_tag, 4);

        // test tag history
        assert_eq!(manager.state.focus_manager.tag(1).unwrap_or_default(), 3);
        assert_eq!(manager.state.focus_manager.tag(2).unwrap_or_default(), 2);
        assert_eq!(manager.state.focus_manager.tag(3).unwrap_or_default(), 6);
    }

    #[test]
    fn focus_tag_change_should_go_to_previous_and_next_tag() {
        let mut manager = Manager::new_test(vec![
            "A15".to_string(),
            "B24".to_string(),
            "C".to_string(),
            "6D4".to_string(),
            "E39".to_string(),
            "F67".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());
        let state = &mut manager.state;

        state.focus_tag(&2);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 2);

        focus_tag_change(state, 1);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 3);

        focus_tag_change(state, -1);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 2);

        focus_tag_change(state, 2);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 4);

        focus_tag_change(state, -5);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 5);

        focus_tag_change(state, 3);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 2);

        focus_tag_change(state, 13);
        assert_eq!(state.focus_manager.tag(0).unwrap(), 3);
    }

    #[test]
    fn focus_window_top() {
        let mut manager = Manager::new_test(vec![]);
        manager.screen_create_handler(Screen::default());

        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(1), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(2), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(3), None, None),
            -1,
            -1,
        );

        let expected = manager.state.windows[0].clone();
        let initial = manager.state.windows[1].clone();

        manager.state.focus_window(&initial.handle);

        manager.command_handler(&Command::FocusWindowTop { swap: false });
        let actual = manager
            .state
            .focus_manager
            .window(&manager.state.windows)
            .unwrap()
            .handle;
        assert_eq!(expected.handle, actual);

        manager.command_handler(&Command::FocusWindowTop { swap: false });
        let actual = manager
            .state
            .focus_manager
            .window(&manager.state.windows)
            .unwrap()
            .handle;
        assert_eq!(expected.handle, actual);

        manager.command_handler(&Command::FocusWindowTop { swap: true });
        let actual = manager
            .state
            .focus_manager
            .window(&manager.state.windows)
            .unwrap()
            .handle;
        assert_eq!(initial.handle, actual);
    }

    #[test]
    fn move_window_top() {
        let mut manager = Manager::new_test(vec![]);
        manager.screen_create_handler(Screen::default());

        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(1), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(2), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(3), None, None),
            -1,
            -1,
        );

        let expected = manager.state.windows[0].clone();
        let initial = manager.state.windows[1].clone();

        manager.state.focus_window(&initial.handle);

        manager.command_handler(&Command::MoveWindowTop { swap: false });
        assert_eq!(manager.state.windows[0].handle, initial.handle);

        manager.command_handler(&Command::MoveWindowTop { swap: false });
        assert_eq!(manager.state.windows[0].handle, initial.handle);

        manager.command_handler(&Command::MoveWindowTop { swap: true });
        assert_eq!(manager.state.windows[0].handle, expected.handle);
    }

    #[test]
    fn move_window_to_next_or_prev_tag_should_be_able_to_cycle() {
        let mut manager = Manager::new_test(vec![
            "AO".to_string(),
            "EU".to_string(),
            "ID".to_string(),
            "HT".to_string(),
            "NS".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(1), None, None),
            -1,
            -1,
        );

        let first_tag = manager.state.tags.get(1).unwrap().id;
        let third_tag = manager.state.tags.get(3).unwrap().id;
        let last_tag = manager.state.tags.get(5).unwrap().id;

        assert!(manager.state.windows[0].has_tag(&first_tag));

        manager.command_handler(&Command::MoveWindowToPreviousTag { follow: true });
        assert!(manager.state.windows[0].has_tag(&last_tag));

        (0..3).for_each(|_| {
            manager.command_handler(&Command::MoveWindowToNextTag { follow: false });
            manager.command_handler(&Command::FocusNextTag {
                behavior: FocusDeltaBehavior::Default,
            });
        });
        assert!(manager.state.windows[0].has_tag(&third_tag));
    }

    #[test]
    fn move_window_to_next_or_prev_tag_should_be_able_to_keep_window_focused() {
        let mut manager = Manager::new_test(vec!["AO".to_string(), "EU".to_string()]);
        manager.screen_create_handler(Screen::default());
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(1), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(2), None, None),
            -1,
            -1,
        );
        let expected_tag = manager.state.tags.get(2).unwrap().id;
        manager.command_handler(&Command::SendWindowToTag {
            window: None,
            tag: expected_tag,
        });
        let initial = manager.state.windows[0].clone();

        manager.command_handler(&Command::MoveWindowToNextTag { follow: true });

        assert_eq!(
            *manager.state.focus_manager.tag_history.front().unwrap(),
            expected_tag
        );
        assert_eq!(manager.state.windows[0].handle, initial.handle);
    }

    #[test]
    fn after_moving_second_window_remaining_single_window_has_no_border() {
        let mut manager = Manager::new_test_with_border(vec!["1".to_string(), "2".to_string()], 1);
        manager.screen_create_handler(Screen::default());

        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(1), None, None),
            -1,
            -1,
        );
        manager.window_created_handler(
            Window::new(WindowHandle::<MockHandle>(2), None, None),
            -1,
            -1,
        );

        let first_tag = manager.state.tags.get(1).unwrap().id;
        assert!(manager.state.windows[0].has_tag(&first_tag));
        assert!(manager.state.windows[0].border() > 0);

        let second_tag = manager.state.tags.get(2).unwrap().id;
        assert!(manager.command_handler(&Command::SendWindowToTag {
            window: Some(manager.state.windows[0].handle),
            tag: second_tag,
        }));

        assert_eq!(manager.state.windows[0].border(), 0);
    }

    #[test]
    fn after_moving_single_window_to_another_single_window_both_have_borders() {
        let mut manager = Manager::new_test_with_border(vec!["1".to_string(), "2".to_string()], 1);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        let second_tag = manager.state.tags.get(2).unwrap().id;
        assert!(manager.command_handler(&Command::SendWindowToTag {
            window: Some(manager.state.windows[0].handle),
            tag: second_tag,
        }));

        assert_eq!(manager.state.windows[0].border(), 1);
        assert_eq!(manager.state.windows[1].border(), 1);
    }

    #[test]

    fn goto_next_empty_tag_while_in_used_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Used".to_string(), "Empty".to_string()]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]
    fn goto_next_empty_tag_while_in_empty_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Emtpy_One".to_string(), "Empty".to_string()]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]
    fn goto_next_empty_tag_multiple_tags() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec![
            "A".to_string(),
            "B".to_string(),
            "C".to_string(),
            "D".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&1);
        manager.window_created_handler(second_window, -1, -1);

        let mut third_window = Window::new(WindowHandle::<MockHandle>(3), None, None);
        third_window.tag(&2);
        let third_window_handle = third_window.handle;
        manager.window_created_handler(third_window, -1, -1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 3);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 4);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 3);

        manager.window_destroyed_handler(&third_window_handle);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));
        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]

    fn goto_previous_empty_tag_while_in_used_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Used".to_string(), "Empty".to_string()]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&2);
        manager.window_created_handler(first_window, -1, -1);

        manager.state.focus_tag(&2);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);
    }

    #[test]
    fn goto_previous_empty_tag_while_in_empty_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Emtpy_One".to_string(), "Empty".to_string()]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&2);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);
    }

    #[test]
    fn goto_previous_empty_tag_multiple_tags() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec![
            "A".to_string(),
            "B".to_string(),
            "C".to_string(),
            "D".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&1);
        manager.window_created_handler(second_window, -1, -1);

        let mut third_window = Window::new(WindowHandle::<MockHandle>(3), None, None);
        third_window.tag(&2);
        let third_window_handle = third_window.handle;
        manager.window_created_handler(third_window, -1, -1);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 4);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 3);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 4);

        manager.window_destroyed_handler(&third_window_handle);
        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));
        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreUsed
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]

    fn goto_next_used_tag_while_in_used_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Used".to_string(), "Empty".to_string()]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]
    fn goto_next_used_tag_while_in_empty_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Emtpy_One".to_string(), "Used".to_string()]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&2);
        manager.window_created_handler(first_window, -1, -1);

        manager.state.focus_tag(&1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]
    fn goto_next_used_tag_multiple_tags() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec![
            "A".to_string(),
            "B".to_string(),
            "C".to_string(),
            "D".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());

        manager.state.focus_tag(&1);

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        let mut third_window = Window::new(WindowHandle::<MockHandle>(3), None, None);
        third_window.tag(&4);
        let third_window_handle = third_window.handle;
        manager.window_created_handler(third_window, -1, -1);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 4);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);

        manager.window_destroyed_handler(&third_window_handle);

        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));
        assert!(manager.command_handler(&Command::FocusNextTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);
    }

    #[test]

    fn goto_previous_used_tag_while_in_used_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["A".to_string(), "B".to_string(), "C".to_string()]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        manager.state.focus_tag(&2);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);
    }

    #[test]
    fn goto_previous_used_tag_while_in_empty_tag() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["Emtpy_One".to_string(), "Used".to_string()]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&2);
        manager.window_created_handler(first_window, -1, -1);

        manager.state.focus_tag(&1);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);
    }

    #[test]
    fn goto_previous_used_tag_multiple_tags() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec![
            "A".to_string(),
            "B".to_string(),
            "C".to_string(),
            "D".to_string(),
            "E".to_string(),
        ]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&1);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        let mut third_window = Window::new(WindowHandle::<MockHandle>(3), None, None);
        third_window.tag(&4);
        let third_window_handle = third_window.handle;
        manager.window_created_handler(third_window, -1, -1);

        manager.state.focus_tag(&4);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 2);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 4);

        manager.window_destroyed_handler(&third_window_handle);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));
        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 1);
    }

    #[test]
    fn goto_previous_used_tag_wraparound() {
        let mut manager: Manager<
            MockHandle,
            crate::config::tests::TestConfig,
            crate::display_servers::MockDisplayServer<MockHandle>,
        > = Manager::new_test(vec!["A".to_string(), "B".to_string(), "C".to_string()]);
        manager.screen_create_handler(Screen::default());

        let mut first_window = Window::new(WindowHandle::<MockHandle>(1), None, None);
        first_window.tag(&3);
        manager.window_created_handler(first_window, -1, -1);

        let mut second_window = Window::new(WindowHandle::<MockHandle>(2), None, None);
        second_window.tag(&2);
        manager.window_created_handler(second_window, -1, -1);

        manager.state.focus_tag(&2);

        assert!(manager.command_handler(&Command::FocusPreviousTag {
            behavior: FocusDeltaBehavior::IgnoreEmpty
        }));

        assert_eq!(manager.state.focus_manager.tag(0).unwrap(), 3);
    }
}