Files @ r23516:763b689dacfc
Branch filter:

Location: cpp/openttd-patchpack/source/src/group_gui.cpp

Henry Wilson
Codechange: [core] Implement SmallVector using std::vector

The public and protected interface to SmallVector are unchanged
SmallVector now requires that items be default constructible
This isn't an issue since some contained items were previously created
uninitialized.

Temporary default constructors are added to the following structs
- SmallPair
- SmallStackItem
- GRFPresence

Where vector<bool> is required, transition immediately to std::vector
to avoid returning proxy object references.
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/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file group_gui.cpp GUI for the group window. */

#include "stdafx.h"
#include "textbuf_gui.h"
#include "command_func.h"
#include "vehicle_gui.h"
#include "vehicle_base.h"
#include "string_func.h"
#include "strings_func.h"
#include "window_func.h"
#include "vehicle_func.h"
#include "autoreplace_gui.h"
#include "company_func.h"
#include "widgets/dropdown_func.h"
#include "tilehighlight_func.h"
#include "vehicle_gui_base.h"
#include "core/geometry_func.hpp"
#include "company_base.h"
#include "company_gui.h"

#include "widgets/group_widget.h"

#include "table/sprites.h"

#include "safeguards.h"

static const int LEVEL_WIDTH = 10; ///< Indenting width of a sub-group in pixels

typedef GUIList<const Group*> GUIGroupList;

static const NWidgetPart _nested_group_widgets[] = {
	NWidget(NWID_HORIZONTAL), // Window header
		NWidget(WWT_CLOSEBOX, COLOUR_GREY),
		NWidget(WWT_CAPTION, COLOUR_GREY, WID_GL_CAPTION),
		NWidget(WWT_SHADEBOX, COLOUR_GREY),
		NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
		NWidget(WWT_STICKYBOX, COLOUR_GREY),
	EndContainer(),
	NWidget(NWID_HORIZONTAL),
		/* left part */
		NWidget(NWID_VERTICAL),
			NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalTextLines(1, WD_DROPDOWNTEXT_TOP + WD_DROPDOWNTEXT_BOTTOM), SetFill(1, 0), EndContainer(),
			NWidget(WWT_PANEL, COLOUR_GREY, WID_GL_ALL_VEHICLES), SetFill(1, 0), EndContainer(),
			NWidget(WWT_PANEL, COLOUR_GREY, WID_GL_DEFAULT_VEHICLES), SetFill(1, 0), EndContainer(),
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_GROUP), SetMatrixDataTip(1, 0, STR_GROUPS_CLICK_ON_GROUP_FOR_TOOLTIP),
						SetFill(1, 0), SetResize(0, 1), SetScrollbar(WID_GL_LIST_GROUP_SCROLLBAR),
				NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_GL_LIST_GROUP_SCROLLBAR),
			EndContainer(),
			NWidget(WWT_PANEL, COLOUR_GREY, WID_GL_INFO), SetFill(1, 0), EndContainer(),
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_CREATE_GROUP), SetFill(0, 1),
						SetDataTip(SPR_GROUP_CREATE_TRAIN, STR_GROUP_CREATE_TOOLTIP),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_DELETE_GROUP), SetFill(0, 1),
						SetDataTip(SPR_GROUP_DELETE_TRAIN, STR_GROUP_DELETE_TOOLTIP),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_RENAME_GROUP), SetFill(0, 1),
						SetDataTip(SPR_GROUP_RENAME_TRAIN, STR_GROUP_RENAME_TOOLTIP),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_LIVERY_GROUP), SetFill(0, 1),
						SetDataTip(SPR_GROUP_LIVERY_TRAIN, STR_GROUP_LIVERY_TOOLTIP),
				NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), EndContainer(),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_REPLACE_PROTECTION), SetFill(0, 1),
						SetDataTip(SPR_GROUP_REPLACE_OFF_TRAIN, STR_GROUP_REPLACE_PROTECTION_TOOLTIP),
			EndContainer(),
		EndContainer(),
		/* right part */
		NWidget(NWID_VERTICAL),
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GL_SORT_BY_ORDER), SetMinimalSize(81, 12), SetDataTip(STR_BUTTON_SORT_BY, STR_TOOLTIP_SORT_ORDER),
				NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GL_SORT_BY_DROPDOWN), SetMinimalSize(167, 12), SetDataTip(0x0, STR_TOOLTIP_SORT_CRITERIA),
				NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(12, 12), SetResize(1, 0), EndContainer(),
			EndContainer(),
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_VEHICLE), SetMinimalSize(248, 0), SetMatrixDataTip(1, 0, STR_NULL), SetResize(1, 1), SetFill(1, 0), SetScrollbar(WID_GL_LIST_VEHICLE_SCROLLBAR),
				NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_GL_LIST_VEHICLE_SCROLLBAR),
			EndContainer(),
			NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(1, 0), SetFill(1, 1), SetResize(1, 0), EndContainer(),
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GL_AVAILABLE_VEHICLES), SetMinimalSize(106, 12), SetFill(0, 1),
						SetDataTip(STR_BLACK_STRING, STR_VEHICLE_LIST_AVAILABLE_ENGINES_TOOLTIP),
				NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 1), SetResize(1, 0), EndContainer(),
				NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GL_MANAGE_VEHICLES_DROPDOWN), SetMinimalSize(118, 12), SetFill(0, 1),
						SetDataTip(STR_VEHICLE_LIST_MANAGE_LIST, STR_VEHICLE_LIST_MANAGE_LIST_TOOLTIP),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_STOP_ALL), SetMinimalSize(12, 12), SetFill(0, 1),
						SetDataTip(SPR_FLAG_VEH_STOPPED, STR_VEHICLE_LIST_MASS_STOP_LIST_TOOLTIP),
				NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_GL_START_ALL), SetMinimalSize(12, 12), SetFill(0, 1),
						SetDataTip(SPR_FLAG_VEH_RUNNING, STR_VEHICLE_LIST_MASS_START_LIST_TOOLTIP),
				NWidget(WWT_RESIZEBOX, COLOUR_GREY),
			EndContainer(),
		EndContainer(),
	EndContainer(),
};

class VehicleGroupWindow : public BaseVehicleListWindow {
private:
	/* Columns in the group list */
	enum ListColumns {
		VGC_NAME,          ///< Group name.
		VGC_PROTECT,       ///< Autoreplace protect icon.
		VGC_AUTOREPLACE,   ///< Autoreplace active icon.
		VGC_PROFIT,        ///< Profit icon.
		VGC_NUMBER,        ///< Number of vehicles in the group.

		VGC_END
	};

	VehicleID vehicle_sel; ///< Selected vehicle
	GroupID group_sel;     ///< Selected group (for drag/drop)
	GroupID group_rename;  ///< Group being renamed, INVALID_GROUP if none
	GroupID group_over;    ///< Group over which a vehicle is dragged, INVALID_GROUP if none
	GroupID group_confirm; ///< Group awaiting delete confirmation
	GUIGroupList groups;   ///< List of groups
	uint tiny_step_height; ///< Step height for the group list
	Scrollbar *group_sb;

	SmallVector<int, 16> indents; ///< Indentation levels

	Dimension column_size[VGC_END]; ///< Size of the columns in the group list.

	void AddChildren(GUIGroupList *source, GroupID parent, int indent)
	{
		for (const Group **g = source->Begin(); g != source->End(); g++) {
			if ((*g)->parent != parent) continue;
			*this->groups.Append() = *g;
			*this->indents.Append() = indent;
			AddChildren(source, (*g)->index, indent + 1);
		}
	}

	/** Sort the groups by their name */
	static int CDECL GroupNameSorter(const Group * const *a, const Group * const *b)
	{
		static const Group *last_group[2] = { NULL, NULL };
		static char         last_name[2][64] = { "", "" };

		if (*a != last_group[0]) {
			last_group[0] = *a;
			SetDParam(0, (*a)->index);
			GetString(last_name[0], STR_GROUP_NAME, lastof(last_name[0]));
		}

		if (*b != last_group[1]) {
			last_group[1] = *b;
			SetDParam(0, (*b)->index);
			GetString(last_name[1], STR_GROUP_NAME, lastof(last_name[1]));
		}

		int r = strnatcmp(last_name[0], last_name[1]); // Sort by name (natural sorting).
		if (r == 0) return (*a)->index - (*b)->index;
		return r;
	}

	/**
	 * (Re)Build the group list.
	 *
	 * @param owner The owner of the window
	 */
	void BuildGroupList(Owner owner)
	{
		if (!this->groups.NeedRebuild()) return;

		this->groups.Clear();
		this->indents.Clear();

		GUIGroupList list;

		const Group *g;
		FOR_ALL_GROUPS(g) {
			if (g->owner == owner && g->vehicle_type == this->vli.vtype) {
				*list.Append() = g;
			}
		}

		list.ForceResort();
		list.Sort(&GroupNameSorter);

		AddChildren(&list, INVALID_GROUP, 0);

		this->groups.Compact();
		this->groups.RebuildDone();
	}

	/**
	 * Compute tiny_step_height and column_size
	 * @return Total width required for the group list.
	 */
	uint ComputeGroupInfoSize()
	{
		this->column_size[VGC_NAME] = maxdim(GetStringBoundingBox(STR_GROUP_DEFAULT_TRAINS + this->vli.vtype), GetStringBoundingBox(STR_GROUP_ALL_TRAINS + this->vli.vtype));
		this->column_size[VGC_NAME].width = max(170u, this->column_size[VGC_NAME].width);
		this->tiny_step_height = this->column_size[VGC_NAME].height;

		this->column_size[VGC_PROTECT] = GetSpriteSize(SPR_GROUP_REPLACE_PROTECT);
		this->tiny_step_height = max(this->tiny_step_height, this->column_size[VGC_PROTECT].height);

		this->column_size[VGC_AUTOREPLACE] = GetSpriteSize(SPR_GROUP_REPLACE_ACTIVE);
		this->tiny_step_height = max(this->tiny_step_height, this->column_size[VGC_AUTOREPLACE].height);

		this->column_size[VGC_PROFIT].width = 0;
		this->column_size[VGC_PROFIT].height = 0;
		static const SpriteID profit_sprites[] = {SPR_PROFIT_NA, SPR_PROFIT_NEGATIVE, SPR_PROFIT_SOME, SPR_PROFIT_LOT};
		for (uint i = 0; i < lengthof(profit_sprites); i++) {
			Dimension d = GetSpriteSize(profit_sprites[i]);
			this->column_size[VGC_PROFIT] = maxdim(this->column_size[VGC_PROFIT], d);
		}
		this->tiny_step_height = max(this->tiny_step_height, this->column_size[VGC_PROFIT].height);

		SetDParamMaxValue(0, GroupStatistics::Get(this->vli.company, ALL_GROUP, this->vli.vtype).num_vehicle, 3, FS_SMALL);
		this->column_size[VGC_NUMBER] = GetStringBoundingBox(STR_TINY_COMMA);
		this->tiny_step_height = max(this->tiny_step_height, this->column_size[VGC_NUMBER].height);

		this->tiny_step_height += WD_MATRIX_TOP;

		return WD_FRAMERECT_LEFT + 8 +
			this->column_size[VGC_NAME].width + 8 +
			this->column_size[VGC_PROTECT].width + 2 +
			this->column_size[VGC_AUTOREPLACE].width + 2 +
			this->column_size[VGC_PROFIT].width + 2 +
			this->column_size[VGC_NUMBER].width + 2 +
			WD_FRAMERECT_RIGHT;
	}

	/**
	 * Draw a row in the group list.
	 * @param y Top of the row.
	 * @param left Left of the row.
	 * @param right Right of the row.
	 * @param g_id Group to list.
	 * @param indent Indentation level.
	 * @param protection Whether autoreplace protection is set.
	 */
	void DrawGroupInfo(int y, int left, int right, GroupID g_id, int indent = 0, bool protection = false) const
	{
		/* Highlight the group if a vehicle is dragged over it */
		if (g_id == this->group_over) {
			GfxFillRect(left + WD_FRAMERECT_LEFT, y + WD_FRAMERECT_TOP, right - WD_FRAMERECT_RIGHT, y + this->tiny_step_height - WD_FRAMERECT_BOTTOM - WD_MATRIX_TOP, _colour_gradient[COLOUR_GREY][7]);
		}

		if (g_id == NEW_GROUP) return;

		/* draw the selected group in white, else we draw it in black */
		TextColour colour = g_id == this->vli.index ? TC_WHITE : TC_BLACK;
		const GroupStatistics &stats = GroupStatistics::Get(this->vli.company, g_id, this->vli.vtype);
		bool rtl = _current_text_dir == TD_RTL;

		/* draw group name */
		StringID str;
		if (IsAllGroupID(g_id)) {
			str = STR_GROUP_ALL_TRAINS + this->vli.vtype;
		} else if (IsDefaultGroupID(g_id)) {
			str = STR_GROUP_DEFAULT_TRAINS + this->vli.vtype;
		} else {
			SetDParam(0, g_id);
			str = STR_GROUP_NAME;
		}
		int x = rtl ? right - WD_FRAMERECT_RIGHT - 8 - this->column_size[VGC_NAME].width + 1 : left + WD_FRAMERECT_LEFT + 8;
		DrawString(x + (rtl ? 0 : indent), x + this->column_size[VGC_NAME].width - 1 - (rtl ? indent : 0), y + (this->tiny_step_height - this->column_size[VGC_NAME].height) / 2, str, colour);

		/* draw autoreplace protection */
		x = rtl ? x - 8 - this->column_size[VGC_PROTECT].width : x + 8 + this->column_size[VGC_NAME].width;
		if (protection) DrawSprite(SPR_GROUP_REPLACE_PROTECT, PAL_NONE, x, y + (this->tiny_step_height - this->column_size[VGC_PROTECT].height) / 2);

		/* draw autoreplace status */
		x = rtl ? x - 2 - this->column_size[VGC_AUTOREPLACE].width : x + 2 + this->column_size[VGC_PROTECT].width;
		if (stats.autoreplace_defined) DrawSprite(SPR_GROUP_REPLACE_ACTIVE, stats.autoreplace_finished ? PALETTE_CRASH : PAL_NONE, x, y + (this->tiny_step_height - this->column_size[VGC_AUTOREPLACE].height) / 2);

		/* draw the profit icon */
		x = rtl ? x - 2 - this->column_size[VGC_PROFIT].width : x + 2 + this->column_size[VGC_AUTOREPLACE].width;
		SpriteID spr;
		if (stats.num_profit_vehicle == 0) {
			spr = SPR_PROFIT_NA;
		} else if (stats.profit_last_year < 0) {
			spr = SPR_PROFIT_NEGATIVE;
		} else if (stats.profit_last_year < 10000 * stats.num_profit_vehicle) { // TODO magic number
			spr = SPR_PROFIT_SOME;
		} else {
			spr = SPR_PROFIT_LOT;
		}
		DrawSprite(spr, PAL_NONE, x, y + (this->tiny_step_height - this->column_size[VGC_PROFIT].height) / 2);

		/* draw the number of vehicles of the group */
		x = rtl ? x - 2 - this->column_size[VGC_NUMBER].width : x + 2 + this->column_size[VGC_PROFIT].width;
		SetDParam(0, stats.num_vehicle);
		DrawString(x, x + this->column_size[VGC_NUMBER].width - 1, y + (this->tiny_step_height - this->column_size[VGC_NUMBER].height) / 2, STR_TINY_COMMA, colour, SA_RIGHT | SA_FORCE);
	}

	/**
	 * Mark the widget containing the currently highlighted group as dirty.
	 */
	void DirtyHighlightedGroupWidget()
	{
		if (this->group_over == INVALID_GROUP) return;

		if (IsAllGroupID(this->group_over)) {
			this->SetWidgetDirty(WID_GL_ALL_VEHICLES);
		} else if (IsDefaultGroupID(this->group_over)) {
			this->SetWidgetDirty(WID_GL_DEFAULT_VEHICLES);
		} else {
			this->SetWidgetDirty(WID_GL_LIST_GROUP);
		}
	}

public:
	VehicleGroupWindow(WindowDesc *desc, WindowNumber window_number) : BaseVehicleListWindow(desc, window_number)
	{
		this->CreateNestedTree();

		this->vscroll = this->GetScrollbar(WID_GL_LIST_VEHICLE_SCROLLBAR);
		this->group_sb = this->GetScrollbar(WID_GL_LIST_GROUP_SCROLLBAR);

		switch (this->vli.vtype) {
			default: NOT_REACHED();
			case VEH_TRAIN:    this->sorting = &_sorting.train;    break;
			case VEH_ROAD:     this->sorting = &_sorting.roadveh;  break;
			case VEH_SHIP:     this->sorting = &_sorting.ship;     break;
			case VEH_AIRCRAFT: this->sorting = &_sorting.aircraft; break;
		}

		this->vli.index = ALL_GROUP;
		this->vehicle_sel = INVALID_VEHICLE;
		this->group_sel = INVALID_GROUP;
		this->group_rename = INVALID_GROUP;
		this->group_over = INVALID_GROUP;

		this->vehicles.SetListing(*this->sorting);
		this->vehicles.ForceRebuild();
		this->vehicles.NeedResort();

		this->BuildVehicleList();
		this->SortVehicleList();

		this->groups.ForceRebuild();
		this->groups.NeedResort();
		this->BuildGroupList(vli.company);

		this->GetWidget<NWidgetCore>(WID_GL_CAPTION)->widget_data = STR_VEHICLE_LIST_TRAIN_CAPTION + this->vli.vtype;
		this->GetWidget<NWidgetCore>(WID_GL_LIST_VEHICLE)->tool_tip = STR_VEHICLE_LIST_TRAIN_LIST_TOOLTIP + this->vli.vtype;

		this->GetWidget<NWidgetCore>(WID_GL_CREATE_GROUP)->widget_data += this->vli.vtype;
		this->GetWidget<NWidgetCore>(WID_GL_RENAME_GROUP)->widget_data += this->vli.vtype;
		this->GetWidget<NWidgetCore>(WID_GL_DELETE_GROUP)->widget_data += this->vli.vtype;
		this->GetWidget<NWidgetCore>(WID_GL_LIVERY_GROUP)->widget_data += this->vli.vtype;
		this->GetWidget<NWidgetCore>(WID_GL_REPLACE_PROTECTION)->widget_data += this->vli.vtype;

		this->FinishInitNested(window_number);
		this->owner = vli.company;
	}

	~VehicleGroupWindow()
	{
		*this->sorting = this->vehicles.GetListing();
	}

	void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override
	{
		switch (widget) {
			case WID_GL_LIST_GROUP: {
				size->width = this->ComputeGroupInfoSize();
				resize->height = this->tiny_step_height;

				/* Minimum height is the height of the list widget minus all and default vehicles... */
				size->height =  4 * GetVehicleListHeight(this->vli.vtype, this->tiny_step_height) - 2 * this->tiny_step_height;

				/* ... minus the buttons at the bottom ... */
				uint max_icon_height = GetSpriteSize(this->GetWidget<NWidgetCore>(WID_GL_CREATE_GROUP)->widget_data).height;
				max_icon_height = max(max_icon_height, GetSpriteSize(this->GetWidget<NWidgetCore>(WID_GL_RENAME_GROUP)->widget_data).height);
				max_icon_height = max(max_icon_height, GetSpriteSize(this->GetWidget<NWidgetCore>(WID_GL_DELETE_GROUP)->widget_data).height);
				max_icon_height = max(max_icon_height, GetSpriteSize(this->GetWidget<NWidgetCore>(WID_GL_REPLACE_PROTECTION)->widget_data).height);

				/* ... minus the height of the group info ... */
				max_icon_height += (FONT_HEIGHT_NORMAL * 3) + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;

				/* Get a multiple of tiny_step_height of that amount */
				size->height = Ceil(size->height - max_icon_height, tiny_step_height);
				break;
			}

			case WID_GL_ALL_VEHICLES:
			case WID_GL_DEFAULT_VEHICLES:
				size->width = this->ComputeGroupInfoSize();
				size->height = this->tiny_step_height;
				break;

			case WID_GL_SORT_BY_ORDER: {
				Dimension d = GetStringBoundingBox(this->GetWidget<NWidgetCore>(widget)->widget_data);
				d.width += padding.width + Window::SortButtonWidth() * 2; // Doubled since the string is centred and it also looks better.
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}

			case WID_GL_LIST_VEHICLE:
				this->ComputeGroupInfoSize();
				resize->height = GetVehicleListHeight(this->vli.vtype, this->tiny_step_height);
				size->height = 4 * resize->height;
				break;

			case WID_GL_MANAGE_VEHICLES_DROPDOWN: {
				Dimension d = this->GetActionDropdownSize(true, true);
				d.height += padding.height;
				d.width  += padding.width;
				*size = maxdim(*size, d);
				break;
			}

			case WID_GL_INFO: {
				size->height = (FONT_HEIGHT_NORMAL * 3) + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
				break;
			}
		}
	}

	/**
	 * Some data on this window has become invalid.
	 * @param data Information about the changed data.
	 * @param gui_scope Whether the call is done from GUI scope. You may not do everything when not in GUI scope. See #InvalidateWindowData() for details.
	 */
	void OnInvalidateData(int data = 0, bool gui_scope = true) override
	{
		if (data == 0) {
			/* This needs to be done in command-scope to enforce rebuilding before resorting invalid data */
			this->vehicles.ForceRebuild();
			this->groups.ForceRebuild();
		} else {
			this->vehicles.ForceResort();
			this->groups.ForceResort();
		}

		/* Process ID-invalidation in command-scope as well */
		if (this->group_rename != INVALID_GROUP && !Group::IsValidID(this->group_rename)) {
			DeleteWindowByClass(WC_QUERY_STRING);
			this->group_rename = INVALID_GROUP;
		}

		if (!(IsAllGroupID(this->vli.index) || IsDefaultGroupID(this->vli.index) || Group::IsValidID(this->vli.index))) {
			this->vli.index = ALL_GROUP;
			HideDropDownMenu(this);
		}
		this->SetDirty();
	}

	void SetStringParameters(int widget) const override
	{
		switch (widget) {
			case WID_GL_AVAILABLE_VEHICLES:
				SetDParam(0, STR_VEHICLE_LIST_AVAILABLE_TRAINS + this->vli.vtype);
				break;

			case WID_GL_CAPTION:
				/* If selected_group == DEFAULT_GROUP || ALL_GROUP, draw the standard caption
				 * We list all vehicles or ungrouped vehicles */
				if (IsDefaultGroupID(this->vli.index) || IsAllGroupID(this->vli.index)) {
					SetDParam(0, STR_COMPANY_NAME);
					SetDParam(1, this->vli.company);
					SetDParam(2, this->vehicles.Length());
					SetDParam(3, this->vehicles.Length());
				} else {
					const Group *g = Group::Get(this->vli.index);

					SetDParam(0, STR_GROUP_NAME);
					SetDParam(1, g->index);
					SetDParam(2, g->statistics.num_vehicle);
					SetDParam(3, g->statistics.num_vehicle);
				}
				break;
		}
	}

	void OnPaint() override
	{
		/* If we select the all vehicles, this->list will contain all vehicles of the owner
		 * else this->list will contain all vehicles which belong to the selected group */
		this->BuildVehicleList();
		this->SortVehicleList();

		this->BuildGroupList(this->owner);

		this->group_sb->SetCount(this->groups.Length());
		this->vscroll->SetCount(this->vehicles.Length());

		/* The drop down menu is out, *but* it may not be used, retract it. */
		if (this->vehicles.Length() == 0 && this->IsWidgetLowered(WID_GL_MANAGE_VEHICLES_DROPDOWN)) {
			this->RaiseWidget(WID_GL_MANAGE_VEHICLES_DROPDOWN);
			HideDropDownMenu(this);
		}

		/* Disable all lists management button when the list is empty */
		this->SetWidgetsDisabledState(this->vehicles.Length() == 0 || _local_company != this->vli.company,
				WID_GL_STOP_ALL,
				WID_GL_START_ALL,
				WID_GL_MANAGE_VEHICLES_DROPDOWN,
				WIDGET_LIST_END);

		/* Disable the group specific function when we select the default group or all vehicles */
		this->SetWidgetsDisabledState(IsDefaultGroupID(this->vli.index) || IsAllGroupID(this->vli.index) || _local_company != this->vli.company,
				WID_GL_DELETE_GROUP,
				WID_GL_RENAME_GROUP,
				WID_GL_LIVERY_GROUP,
				WID_GL_REPLACE_PROTECTION,
				WIDGET_LIST_END);

		/* Disable remaining buttons for non-local companies
		 * Needed while changing _local_company, eg. by cheats
		 * All procedures (eg. move vehicle to another group)
		 *  verify, whether you are the owner of the vehicle,
		 *  so it doesn't have to be disabled
		 */
		this->SetWidgetsDisabledState(_local_company != this->vli.company,
				WID_GL_CREATE_GROUP,
				WID_GL_AVAILABLE_VEHICLES,
				WIDGET_LIST_END);

		/* If not a default group and the group has replace protection, show an enabled replace sprite. */
		uint16 protect_sprite = SPR_GROUP_REPLACE_OFF_TRAIN;
		if (!IsDefaultGroupID(this->vli.index) && !IsAllGroupID(this->vli.index) && Group::Get(this->vli.index)->replace_protection) protect_sprite = SPR_GROUP_REPLACE_ON_TRAIN;
		this->GetWidget<NWidgetCore>(WID_GL_REPLACE_PROTECTION)->widget_data = protect_sprite + this->vli.vtype;

		/* Set text of sort by dropdown */
		this->GetWidget<NWidgetCore>(WID_GL_SORT_BY_DROPDOWN)->widget_data = this->vehicle_sorter_names[this->vehicles.SortType()];

		this->DrawWidgets();
	}

	void DrawWidget(const Rect &r, int widget) const override
	{
		switch (widget) {
			case WID_GL_ALL_VEHICLES:
				DrawGroupInfo(r.top + WD_FRAMERECT_TOP, r.left, r.right, ALL_GROUP);
				break;

			case WID_GL_DEFAULT_VEHICLES:
				DrawGroupInfo(r.top + WD_FRAMERECT_TOP, r.left, r.right, DEFAULT_GROUP);
				break;

			case WID_GL_INFO: {
				Money this_year = 0;
				Money last_year = 0;
				uint32 occupancy = 0;
				uint32 vehicle_count = this->vehicles.Length();

				for (uint i = 0; i < vehicle_count; i++) {
					const Vehicle *v = this->vehicles[i];
					assert(v->owner == this->owner);

					this_year += v->GetDisplayProfitThisYear();
					last_year += v->GetDisplayProfitLastYear();
					occupancy += v->trip_occupancy;
				}

				const int left  = r.left + WD_FRAMERECT_LEFT + 8;
				const int right = r.right - WD_FRAMERECT_RIGHT - 8;

				int y = r.top + WD_FRAMERECT_TOP;
				DrawString(left, right, y, STR_GROUP_PROFIT_THIS_YEAR, TC_BLACK);
				SetDParam(0, this_year);
				DrawString(left, right, y, STR_JUST_CURRENCY_LONG, TC_BLACK, SA_RIGHT);

				y += FONT_HEIGHT_NORMAL;
				DrawString(left, right, y, STR_GROUP_PROFIT_LAST_YEAR, TC_BLACK);
				SetDParam(0, last_year);
				DrawString(left, right, y, STR_JUST_CURRENCY_LONG, TC_BLACK, SA_RIGHT);

				y += FONT_HEIGHT_NORMAL;
				DrawString(left, right, y, STR_GROUP_OCCUPANCY, TC_BLACK);
				if (vehicle_count > 0) {
					SetDParam(0, occupancy / vehicle_count);
					DrawString(left, right, y, STR_GROUP_OCCUPANCY_VALUE, TC_BLACK, SA_RIGHT);
				}

				break;
			}

			case WID_GL_LIST_GROUP: {
				int y1 = r.top + WD_FRAMERECT_TOP;
				int max = min(this->group_sb->GetPosition() + this->group_sb->GetCapacity(), this->groups.Length());
				for (int i = this->group_sb->GetPosition(); i < max; ++i) {
					const Group *g = this->groups[i];

					assert(g->owner == this->owner);

					DrawGroupInfo(y1, r.left, r.right, g->index, this->indents[i] * LEVEL_WIDTH, g->replace_protection);

					y1 += this->tiny_step_height;
				}
				if ((uint)this->group_sb->GetPosition() + this->group_sb->GetCapacity() > this->groups.Length()) {
					DrawGroupInfo(y1, r.left, r.right, NEW_GROUP);
				}
				break;
			}

			case WID_GL_SORT_BY_ORDER:
				this->DrawSortButtonState(WID_GL_SORT_BY_ORDER, this->vehicles.IsDescSortOrder() ? SBS_DOWN : SBS_UP);
				break;

			case WID_GL_LIST_VEHICLE:
				if (this->vli.index != ALL_GROUP) {
					/* Mark vehicles which are in sub-groups */
					int y = r.top;
					uint max = min(this->vscroll->GetPosition() + this->vscroll->GetCapacity(), this->vehicles.Length());
					for (uint i = this->vscroll->GetPosition(); i < max; ++i) {
						const Vehicle *v = this->vehicles[i];
						if (v->group_id != this->vli.index) {
							GfxFillRect(r.left + 1, y + 1, r.right - 1, y + this->resize.step_height - 2, _colour_gradient[COLOUR_GREY][3], FILLRECT_CHECKER);
						}
						y += this->resize.step_height;
					}
				}

				this->DrawVehicleListItems(this->vehicle_sel, this->resize.step_height, r);
				break;
		}
	}

	static void DeleteGroupCallback(Window *win, bool confirmed)
	{
		if (confirmed) {
			VehicleGroupWindow *w = (VehicleGroupWindow*)win;
			w->vli.index = ALL_GROUP;
			DoCommandP(0, w->group_confirm, 0, CMD_DELETE_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_DELETE));
		}
	}

	void OnClick(Point pt, int widget, int click_count) override
	{
		switch (widget) {
			case WID_GL_SORT_BY_ORDER: // Flip sorting method ascending/descending
				this->vehicles.ToggleSortOrder();
				this->SetDirty();
				break;

			case WID_GL_SORT_BY_DROPDOWN: // Select sorting criteria dropdown menu
				ShowDropDownMenu(this, this->vehicle_sorter_names, this->vehicles.SortType(),  WID_GL_SORT_BY_DROPDOWN, 0, (this->vli.vtype == VEH_TRAIN || this->vli.vtype == VEH_ROAD) ? 0 : (1 << 10));
				return;

			case WID_GL_ALL_VEHICLES: // All vehicles button
				if (!IsAllGroupID(this->vli.index)) {
					this->vli.index = ALL_GROUP;
					this->vehicles.ForceRebuild();
					this->SetDirty();
				}
				break;

			case WID_GL_DEFAULT_VEHICLES: // Ungrouped vehicles button
				if (!IsDefaultGroupID(this->vli.index)) {
					this->vli.index = DEFAULT_GROUP;
					this->vehicles.ForceRebuild();
					this->SetDirty();
				}
				break;

			case WID_GL_LIST_GROUP: { // Matrix Group
				uint id_g = this->group_sb->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_GROUP, 0, this->tiny_step_height);
				if (id_g >= this->groups.Length()) return;

				this->group_sel = this->vli.index = this->groups[id_g]->index;

				SetObjectToPlaceWnd(SPR_CURSOR_MOUSE, PAL_NONE, HT_DRAG, this);

				this->vehicles.ForceRebuild();
				this->SetDirty();
				break;
			}

			case WID_GL_LIST_VEHICLE: { // Matrix Vehicle
				uint id_v = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_VEHICLE);
				if (id_v >= this->vehicles.Length()) return; // click out of list bound

				const Vehicle *v = this->vehicles[id_v];
				if (VehicleClicked(v)) break;

				this->vehicle_sel = v->index;

				SetObjectToPlaceWnd(SPR_CURSOR_MOUSE, PAL_NONE, HT_DRAG, this);
				SetMouseCursorVehicle(v, EIT_IN_LIST);
				_cursor.vehchain = true;

				this->SetDirty();
				break;
			}

			case WID_GL_CREATE_GROUP: { // Create a new group
				DoCommandP(0, this->vli.vtype, this->vli.index, CMD_CREATE_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_CREATE), CcCreateGroup);
				break;
			}

			case WID_GL_DELETE_GROUP: { // Delete the selected group
				this->group_confirm = this->vli.index;
				ShowQuery(STR_QUERY_GROUP_DELETE_CAPTION, STR_GROUP_DELETE_QUERY_TEXT, this, DeleteGroupCallback);
				break;
			}

			case WID_GL_RENAME_GROUP: // Rename the selected roup
				this->ShowRenameGroupWindow(this->vli.index, false);
				break;

			case WID_GL_LIVERY_GROUP: // Set group livery
				ShowCompanyLiveryWindow(this->owner, this->vli.index);
				break;

			case WID_GL_AVAILABLE_VEHICLES:
				ShowBuildVehicleWindow(INVALID_TILE, this->vli.vtype);
				break;

			case WID_GL_MANAGE_VEHICLES_DROPDOWN: {
				DropDownList *list = this->BuildActionDropdownList(true, Group::IsValidID(this->vli.index));
				ShowDropDownList(this, list, 0, WID_GL_MANAGE_VEHICLES_DROPDOWN);
				break;
			}

			case WID_GL_START_ALL:
			case WID_GL_STOP_ALL: { // Start/stop all vehicles of the list
				DoCommandP(0, (1 << 1) | (widget == WID_GL_START_ALL ? (1 << 0) : 0), this->vli.Pack(), CMD_MASS_START_STOP);
				break;
			}

			case WID_GL_REPLACE_PROTECTION: {
				const Group *g = Group::GetIfValid(this->vli.index);
				if (g != NULL) {
					DoCommandP(0, this->vli.index, (g->replace_protection ? 0 : 1) | (_ctrl_pressed << 1), CMD_SET_GROUP_REPLACE_PROTECTION);
				}
				break;
			}
		}
	}

	void OnDragDrop_Group(Point pt, int widget)
	{
		const Group *g = Group::Get(this->group_sel);

		switch (widget) {
			case WID_GL_ALL_VEHICLES: // All vehicles
			case WID_GL_DEFAULT_VEHICLES: // Ungroupd vehicles
				if (g->parent != INVALID_GROUP) {
					DoCommandP(0, this->group_sel | (1 << 16), INVALID_GROUP, CMD_ALTER_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_SET_PARENT));
				}

				this->group_sel = INVALID_GROUP;
				this->group_over = INVALID_GROUP;
				this->SetDirty();
				break;

			case WID_GL_LIST_GROUP: { // Matrix group
				uint id_g = this->group_sb->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_GROUP, 0, this->tiny_step_height);
				GroupID new_g = id_g >= this->groups.Length() ? INVALID_GROUP : this->groups[id_g]->index;

				if (this->group_sel != new_g && g->parent != new_g) {
					DoCommandP(0, this->group_sel | (1 << 16), new_g, CMD_ALTER_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_SET_PARENT));
				}

				this->group_sel = INVALID_GROUP;
				this->group_over = INVALID_GROUP;
				this->SetDirty();
				break;
			}
		}
	}

	void OnDragDrop_Vehicle(Point pt, int widget)
	{
		switch (widget) {
			case WID_GL_DEFAULT_VEHICLES: // Ungrouped vehicles
				DoCommandP(0, DEFAULT_GROUP, this->vehicle_sel | (_ctrl_pressed ? 1 << 31 : 0), CMD_ADD_VEHICLE_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_ADD_VEHICLE));

				this->vehicle_sel = INVALID_VEHICLE;
				this->group_over = INVALID_GROUP;

				this->SetDirty();
				break;

			case WID_GL_LIST_GROUP: { // Matrix group
				const VehicleID vindex = this->vehicle_sel;
				this->vehicle_sel = INVALID_VEHICLE;
				this->group_over = INVALID_GROUP;
				this->SetDirty();

				uint id_g = this->group_sb->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_GROUP, 0, this->tiny_step_height);
				GroupID new_g = id_g >= this->groups.Length() ? NEW_GROUP : this->groups[id_g]->index;

				DoCommandP(0, new_g, vindex | (_ctrl_pressed ? 1 << 31 : 0), CMD_ADD_VEHICLE_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_ADD_VEHICLE), new_g == NEW_GROUP ? CcAddVehicleNewGroup : NULL);
				break;
			}

			case WID_GL_LIST_VEHICLE: { // Matrix vehicle
				const VehicleID vindex = this->vehicle_sel;
				this->vehicle_sel = INVALID_VEHICLE;
				this->group_over = INVALID_GROUP;
				this->SetDirty();

				uint id_v = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_VEHICLE);
				if (id_v >= this->vehicles.Length()) return; // click out of list bound

				const Vehicle *v = this->vehicles[id_v];
				if (!VehicleClicked(v) && vindex == v->index) {
					ShowVehicleViewWindow(v);
				}
				break;
			}
		}
	}

	void OnDragDrop(Point pt, int widget) override
	{
		if (this->vehicle_sel != INVALID_VEHICLE) OnDragDrop_Vehicle(pt, widget);
		if (this->group_sel != INVALID_GROUP) OnDragDrop_Group(pt, widget);

		_cursor.vehchain = false;
	}

	void OnQueryTextFinished(char *str) override
	{
		if (str != NULL) DoCommandP(0, this->group_rename, 0, CMD_ALTER_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_RENAME), NULL, str);
		this->group_rename = INVALID_GROUP;
	}

	void OnResize() override
	{
		this->group_sb->SetCapacityFromWidget(this, WID_GL_LIST_GROUP);
		this->vscroll->SetCapacityFromWidget(this, WID_GL_LIST_VEHICLE);
	}

	void OnDropdownSelect(int widget, int index) override
	{
		switch (widget) {
			case WID_GL_SORT_BY_DROPDOWN:
				this->vehicles.SetSortType(index);
				break;

			case WID_GL_MANAGE_VEHICLES_DROPDOWN:
				assert(this->vehicles.Length() != 0);

				switch (index) {
					case ADI_REPLACE: // Replace window
						ShowReplaceGroupVehicleWindow(this->vli.index, this->vli.vtype);
						break;
					case ADI_SERVICE: // Send for servicing
					case ADI_DEPOT: { // Send to Depots
						DoCommandP(0, DEPOT_MASS_SEND | (index == ADI_SERVICE ? DEPOT_SERVICE : 0U), this->vli.Pack(), GetCmdSendToDepot(this->vli.vtype));
						break;
					}

					case ADI_ADD_SHARED: // Add shared Vehicles
						assert(Group::IsValidID(this->vli.index));

						DoCommandP(0, this->vli.index, this->vli.vtype, CMD_ADD_SHARED_VEHICLE_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_ADD_SHARED_VEHICLE));
						break;
					case ADI_REMOVE_ALL: // Remove all Vehicles from the selected group
						assert(Group::IsValidID(this->vli.index));

						DoCommandP(0, this->vli.index, 0, CMD_REMOVE_ALL_VEHICLES_GROUP | CMD_MSG(STR_ERROR_GROUP_CAN_T_REMOVE_ALL_VEHICLES));
						break;
					default: NOT_REACHED();
				}
				break;

			default: NOT_REACHED();
		}

		this->SetDirty();
	}

	void OnGameTick() override
	{
		if (this->groups.NeedResort() || this->vehicles.NeedResort()) {
			this->SetDirty();
		}
	}

	void OnPlaceObjectAbort() override
	{
		/* abort drag & drop */
		this->vehicle_sel = INVALID_VEHICLE;
		this->DirtyHighlightedGroupWidget();
		this->group_over = INVALID_GROUP;
		this->SetWidgetDirty(WID_GL_LIST_VEHICLE);
	}

	void OnMouseDrag(Point pt, int widget) override
	{
		if (this->vehicle_sel == INVALID_VEHICLE && this->group_sel == INVALID_GROUP) return;

		/* A vehicle is dragged over... */
		GroupID new_group_over = INVALID_GROUP;
		switch (widget) {
			case WID_GL_DEFAULT_VEHICLES: // ... the 'default' group.
				new_group_over = DEFAULT_GROUP;
				break;

			case WID_GL_LIST_GROUP: { // ... the list of custom groups.
				uint id_g = this->group_sb->GetScrolledRowFromWidget(pt.y, this, WID_GL_LIST_GROUP, 0, this->tiny_step_height);
				new_group_over = id_g >= this->groups.Length() ? NEW_GROUP : this->groups[id_g]->index;
				break;
			}
		}

		/* Do not highlight when dragging over the current group */
		if (this->vehicle_sel != INVALID_VEHICLE) {
			if (Vehicle::Get(vehicle_sel)->group_id == new_group_over) new_group_over = INVALID_GROUP;
		} else if (this->group_sel != INVALID_GROUP) {
			if (this->group_sel == new_group_over || Group::Get(this->group_sel)->parent == new_group_over) new_group_over = INVALID_GROUP;
		}

		/* Mark widgets as dirty if the group changed. */
		if (new_group_over != this->group_over) {
			this->DirtyHighlightedGroupWidget();
			this->group_over = new_group_over;
			this->DirtyHighlightedGroupWidget();
		}
	}

	void ShowRenameGroupWindow(GroupID group, bool empty)
	{
		assert(Group::IsValidID(group));
		this->group_rename = group;
		/* Show empty query for new groups */
		StringID str = STR_EMPTY;
		if (!empty) {
			SetDParam(0, group);
			str = STR_GROUP_NAME;
		}
		ShowQueryString(str, STR_GROUP_RENAME_CAPTION, MAX_LENGTH_GROUP_NAME_CHARS, this, CS_ALPHANUMERAL, QSF_ENABLE_DEFAULT | QSF_LEN_IN_CHARS);
	}

	/**
	 * Tests whether a given vehicle is selected in the window, and unselects it if necessary.
	 * Called when the vehicle is deleted.
	 * @param vehicle Vehicle that is going to be deleted
	 */
	void UnselectVehicle(VehicleID vehicle)
	{
		if (this->vehicle_sel == vehicle) ResetObjectToPlace();
	}
};


static WindowDesc _other_group_desc(
	WDP_AUTO, "list_groups", 460, 246,
	WC_INVALID, WC_NONE,
	0,
	_nested_group_widgets, lengthof(_nested_group_widgets)
);

static WindowDesc _train_group_desc(
	WDP_AUTO, "list_groups_train", 525, 246,
	WC_TRAINS_LIST, WC_NONE,
	0,
	_nested_group_widgets, lengthof(_nested_group_widgets)
);

/**
 * Show the group window for the given company and vehicle type.
 * @param company The company to show the window for.
 * @param vehicle_type The type of vehicle to show it for.
 */
void ShowCompanyGroup(CompanyID company, VehicleType vehicle_type)
{
	if (!Company::IsValidID(company)) return;

	WindowNumber num = VehicleListIdentifier(VL_GROUP_LIST, vehicle_type, company).Pack();
	if (vehicle_type == VEH_TRAIN) {
		AllocateWindowDescFront<VehicleGroupWindow>(&_train_group_desc, num);
	} else {
		_other_group_desc.cls = GetWindowClassForVehicleType(vehicle_type);
		AllocateWindowDescFront<VehicleGroupWindow>(&_other_group_desc, num);
	}
}

/**
 * Finds a group list window determined by vehicle type and owner
 * @param vt vehicle type
 * @param owner owner of groups
 * @return pointer to VehicleGroupWindow, NULL if not found
 */
static inline VehicleGroupWindow *FindVehicleGroupWindow(VehicleType vt, Owner owner)
{
	return (VehicleGroupWindow *)FindWindowById(GetWindowClassForVehicleType(vt), VehicleListIdentifier(VL_GROUP_LIST, vt, owner).Pack());
}

/**
 * Opens a 'Rename group' window for newly created group.
 * @param result Did command succeed?
 * @param tile Unused.
 * @param p1 Vehicle type.
 * @param p2 Unused.
 * @see CmdCreateGroup
 */
void CcCreateGroup(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
{
	if (result.Failed()) return;
	assert(p1 <= VEH_AIRCRAFT);

	VehicleGroupWindow *w = FindVehicleGroupWindow((VehicleType)p1, _current_company);
	if (w != NULL) w->ShowRenameGroupWindow(_new_group_id, true);
}

/**
 * Open rename window after adding a vehicle to a new group via drag and drop.
 * @param result Did command succeed?
 * @param tile Unused.
 * @param p1 Unused.
 * @param p2 Bit 0-19: Vehicle ID.
 */
void CcAddVehicleNewGroup(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
{
	if (result.Failed()) return;
	assert(Vehicle::IsValidID(GB(p2, 0, 20)));

	CcCreateGroup(result, 0, Vehicle::Get(GB(p2, 0, 20))->type, 0);
}

/**
 * Removes the highlight of a vehicle in a group window
 * @param *v Vehicle to remove all highlights from
 */
void DeleteGroupHighlightOfVehicle(const Vehicle *v)
{
	/* If we haven't got any vehicles on the mouse pointer, we haven't got any highlighted in any group windows either
	 * If that is the case, we can skip looping though the windows and save time
	 */
	if (_special_mouse_mode != WSM_DRAGDROP) return;

	VehicleGroupWindow *w = FindVehicleGroupWindow(v->type, v->owner);
	if (w != NULL) w->UnselectVehicle(v->index);
}