summaryrefslogtreecommitdiff
path: root/src/autoreplace_gui.cpp
blob: 76a4260d01433f43b50fbff055937b0bb85433e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
/* $Id$ */

/*
 * 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 autoreplace_gui.cpp GUI for autoreplace handling. */

#include "stdafx.h"
#include "command_func.h"
#include "vehicle_gui.h"
#include "newgrf_engine.h"
#include "rail.h"
#include "strings_func.h"
#include "window_func.h"
#include "autoreplace_func.h"
#include "company_func.h"
#include "engine_base.h"
#include "window_gui.h"
#include "engine_gui.h"
#include "settings_func.h"
#include "core/geometry_func.hpp"
#include "rail_gui.h"
#include "widgets/dropdown_func.h"

#include "widgets/autoreplace_widget.h"


uint GetEngineListHeight(VehicleType type);
void DrawEngineList(VehicleType type, int x, int r, int y, const GUIEngineList *eng_list, uint16 min, uint16 max, EngineID selected_id, bool show_count, GroupID selected_group);

static int CDECL EngineNumberSorter(const EngineID *a, const EngineID *b)
{
	int r = ListPositionOfEngine(*a) - ListPositionOfEngine(*b);

	return r;
}

/**
 * Rebuild the left autoreplace list if an engine is removed or added
 * @param e Engine to check if it is removed or added
 * @param id_g The group the engine belongs to
 *  Note: this function only works if it is called either
 *   - when a new vehicle is build, but before it's counted in num_engines
 *   - when a vehicle is deleted and after it's substracted from num_engines
 *   - when not changing the count (used when changing replace orders)
 */
void InvalidateAutoreplaceWindow(EngineID e, GroupID id_g)
{
	if (GetGroupNumEngines(_local_company, id_g, e) == 0 || GetGroupNumEngines(_local_company, ALL_GROUP, e) == 0) {
		/* We don't have any of this engine type.
		 * Either we just sold the last one, we build a new one or we stopped replacing it.
		 * In all cases, we need to update the left list */
		InvalidateWindowData(WC_REPLACE_VEHICLE, Engine::Get(e)->type, 1);
	}
}

/**
 * When an engine is made buildable or is removed from being buildable, add/remove it from the build/autoreplace lists
 * @param type The type of engine
 */
void AddRemoveEngineFromAutoreplaceAndBuildWindows(VehicleType type)
{
	InvalidateWindowData(WC_REPLACE_VEHICLE, type, 0); // Update the autoreplace window
	InvalidateWindowClassesData(WC_BUILD_VEHICLE); // The build windows needs updating as well
}

static const StringID _start_replace_dropdown[] = {
	STR_REPLACE_VEHICLES_NOW,
	STR_REPLACE_VEHICLES_WHEN_OLD,
	INVALID_STRING_ID
};

/**
 * Window for the autoreplacing of vehicles.
 */
class ReplaceVehicleWindow : public Window {
	EngineID sel_engine[2];       ///< Selected engine left and right.
	GUIEngineList engines[2];     ///< Left and right list of engines.
	bool replace_engines;         ///< If \c true, engines are replaced, if \c false, wagons are replaced (only for trains).
	bool reset_sel_engine;        ///< Also reset #sel_engine while updating left and/or right (#update_left and/or #update_right) and no valid engine selected.
	GroupID sel_group;            ///< Group selected to replace.
	int details_height;           ///< Minimal needed height of the details panels (found so far).
	RailType sel_railtype;        ///< Type of rail tracks selected.
	Scrollbar *vscroll[2];

	/**
	 * Figure out if an engine should be added to a list.
	 * @param e            The EngineID.
	 * @param draw_left    If \c true, the left list is drawn (the engines specific to the railtype you selected).
	 * @param show_engines If \c true, the locomotives are drawn, else the wagons are drawn (never both).
	 * @return \c true if the engine should be in the list (based on this check), else \c false.
	 */
	bool GenerateReplaceRailList(EngineID e, bool draw_left, bool show_engines)
	{
		const RailVehicleInfo *rvi = RailVehInfo(e);

		/* Ensure that the wagon/engine selection fits the engine. */
		if ((rvi->railveh_type == RAILVEH_WAGON) == show_engines) return false;

		if (draw_left && show_engines) {
			/* Ensure that the railtype is specific to the selected one */
			if (rvi->railtype != this->sel_railtype) return false;
		}
		return true;
	}


	/**
	 * Generate an engines list
	 * @param draw_left true if generating the left list, otherwise false
	 */
	void GenerateReplaceVehList(bool draw_left)
	{
		EngineID selected_engine = INVALID_ENGINE;
		VehicleType type = (VehicleType)this->window_number;
		byte side = draw_left ? 0 : 1;

		GUIEngineList *list = &this->engines[side];
		list->Clear();

		const Engine *e;
		FOR_ALL_ENGINES_OF_TYPE(e, type) {
			EngineID eid = e->index;
			if (type == VEH_TRAIN && !this->GenerateReplaceRailList(eid, draw_left, this->replace_engines)) continue; // special rules for trains

			if (draw_left) {
				const uint num_engines = GetGroupNumEngines(_local_company, this->sel_group, eid);

				/* Skip drawing the engines we don't have any of and haven't set for replacement */
				if (num_engines == 0 && EngineReplacementForCompany(Company::Get(_local_company), eid, this->sel_group) == INVALID_ENGINE) continue;
			} else {
				if (!CheckAutoreplaceValidity(this->sel_engine[0], eid, _local_company)) continue;
			}

			*list->Append() = eid;
			if (eid == this->sel_engine[side]) selected_engine = eid; // The selected engine is still in the list
		}
		this->sel_engine[side] = selected_engine; // update which engine we selected (the same or none, if it's not in the list anymore)
		EngList_Sort(list, &EngineNumberSorter);
	}

	/** Generate the lists */
	void GenerateLists()
	{
		EngineID e = this->sel_engine[0];

		if (this->engines[0].NeedRebuild()) {
			/* We need to rebuild the left engines list */
			this->GenerateReplaceVehList(true);
			this->vscroll[0]->SetCount(this->engines[0].Length());
			if (this->reset_sel_engine && this->sel_engine[0] == INVALID_ENGINE && this->engines[0].Length() != 0) {
				this->sel_engine[0] = this->engines[0][0];
			}
		}

		if (this->engines[1].NeedRebuild() || e != this->sel_engine[0]) {
			/* Either we got a request to rebuild the right engines list, or the left engines list selected a different engine */
			if (this->sel_engine[0] == INVALID_ENGINE) {
				/* Always empty the right engines list when nothing is selected in the left engines list */
				this->engines[1].Clear();
				this->sel_engine[1] = INVALID_ENGINE;
			} else {
				this->GenerateReplaceVehList(false);
				this->vscroll[1]->SetCount(this->engines[1].Length());
				if (this->reset_sel_engine && this->sel_engine[1] == INVALID_ENGINE && this->engines[1].Length() != 0) {
					this->sel_engine[1] = this->engines[1][0];
				}
			}
		}
		/* Reset the flags about needed updates */
		this->engines[0].RebuildDone();
		this->engines[1].RebuildDone();
		this->reset_sel_engine = false;
	}

	/**
	 * Handle click on the start replace button.
	 * @param replace_when_old Replace now or only when old?
	 */
	void ReplaceClick_StartReplace(bool replace_when_old)
	{
		EngineID veh_from = this->sel_engine[0];
		EngineID veh_to = this->sel_engine[1];
		DoCommandP(0, (replace_when_old ? 1 : 0) | (this->sel_group << 16), veh_from + (veh_to << 16), CMD_SET_AUTOREPLACE);
		this->SetDirty();
	}

public:
	ReplaceVehicleWindow(const WindowDesc *desc, VehicleType vehicletype, GroupID id_g) : Window()
	{
		if (vehicletype == VEH_TRAIN) {
			/* For rail vehicles find the most used vehicle type, which is usually
			 * better than 'just' the first/previous vehicle type. */
			uint type_count[RAILTYPE_END];
			memset(type_count, 0, sizeof(type_count));

			const Engine *e;
			FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
				if (e->u.rail.railveh_type == RAILVEH_WAGON) continue;
				type_count[e->u.rail.railtype] += GetGroupNumEngines(_local_company, id_g, e->index);
			}

			this->sel_railtype = RAILTYPE_BEGIN;
			for (RailType rt = RAILTYPE_BEGIN; rt < RAILTYPE_END; rt++) {
				if (type_count[this->sel_railtype] < type_count[rt]) this->sel_railtype = rt;
			}
		}

		this->replace_engines  = true; // start with locomotives (all other vehicles will not read this bool)
		this->engines[0].ForceRebuild();
		this->engines[1].ForceRebuild();
		this->reset_sel_engine = true;
		this->details_height   = ((vehicletype == VEH_TRAIN) ? 10 : 9) * FONT_HEIGHT_NORMAL + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
		this->sel_engine[0] = INVALID_ENGINE;
		this->sel_engine[1] = INVALID_ENGINE;

		this->CreateNestedTree(desc);
		this->vscroll[0] = this->GetScrollbar(WID_RV_LEFT_SCROLLBAR);
		this->vscroll[1] = this->GetScrollbar(WID_RV_RIGHT_SCROLLBAR);
		this->FinishInitNested(desc, vehicletype);

		this->owner = _local_company;
		this->sel_group = id_g;
	}

	virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
	{
		switch (widget) {
			case WID_RV_LEFT_MATRIX:
			case WID_RV_RIGHT_MATRIX:
				resize->height = GetEngineListHeight((VehicleType)this->window_number);
				size->height = (this->window_number <= VEH_ROAD ? 8 : 4) * resize->height;
				break;

			case WID_RV_LEFT_DETAILS:
			case WID_RV_RIGHT_DETAILS:
				size->height = this->details_height;
				break;

			case WID_RV_TRAIN_WAGONREMOVE_TOGGLE: {
				StringID str = this->GetWidget<NWidgetCore>(widget)->widget_data;
				SetDParam(0, STR_CONFIG_SETTING_ON);
				Dimension d = GetStringBoundingBox(str);
				SetDParam(0, STR_CONFIG_SETTING_OFF);
				d = maxdim(d, GetStringBoundingBox(str));
				d.width += padding.width;
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}

			case WID_RV_TRAIN_ENGINEWAGON_TOGGLE: {
				StringID str = this->GetWidget<NWidgetCore>(widget)->widget_data;
				SetDParam(0, STR_REPLACE_ENGINES);
				Dimension d = GetStringBoundingBox(str);
				SetDParam(0, STR_REPLACE_WAGONS);
				d = maxdim(d, GetStringBoundingBox(str));
				d.width += padding.width;
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}

			case WID_RV_INFO_TAB: {
				SetDParam(0, STR_REPLACE_NOT_REPLACING);
				Dimension d = GetStringBoundingBox(STR_BLACK_STRING);
				SetDParam(0, STR_REPLACE_NOT_REPLACING_VEHICLE_SELECTED);
				d = maxdim(d, GetStringBoundingBox(STR_BLACK_STRING));
				d.width += WD_FRAMETEXT_LEFT +  WD_FRAMETEXT_RIGHT;
				d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
				*size = maxdim(*size, d);
				break;
			}

			case WID_RV_TRAIN_RAILTYPE_DROPDOWN: {
				Dimension d = {0, 0};
				for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
					const RailtypeInfo *rti = GetRailTypeInfo(rt);
					/* Skip rail type if it has no label */
					if (rti->label == 0) continue;
					d = maxdim(d, GetStringBoundingBox(rti->strings.replace_text));
				}
				d.width += padding.width;
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}

			case WID_RV_START_REPLACE: {
				Dimension d = GetStringBoundingBox(STR_REPLACE_VEHICLES_START);
				for (int i = 0; _start_replace_dropdown[i] != INVALID_STRING_ID; i++) {
					d = maxdim(d, GetStringBoundingBox(_start_replace_dropdown[i]));
				}
				d.width += padding.width;
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}
		}
	}

	virtual void SetStringParameters(int widget) const
	{
		switch (widget) {
			case WID_RV_CAPTION:
				SetDParam(0, STR_REPLACE_VEHICLE_TRAIN + this->window_number);
				switch (this->sel_group) {
					case ALL_GROUP:
						SetDParam(1, STR_GROUP_ALL_TRAINS + this->window_number);
						break;

					case DEFAULT_GROUP:
						SetDParam(1, STR_GROUP_DEFAULT_TRAINS + this->window_number);
						break;

					default:
						SetDParam(1, STR_GROUP_NAME);
						SetDParam(2, sel_group);
						break;
				}
				break;

			case WID_RV_TRAIN_WAGONREMOVE_TOGGLE: {
				const Company *c = Company::Get(_local_company);
				SetDParam(0, c->settings.renew_keep_length ? STR_CONFIG_SETTING_ON : STR_CONFIG_SETTING_OFF);
				break;
			}

			case WID_RV_TRAIN_ENGINEWAGON_TOGGLE:
				SetDParam(0, this->replace_engines ? STR_REPLACE_ENGINES : STR_REPLACE_WAGONS);
				break;
		}
	}

	virtual void DrawWidget(const Rect &r, int widget) const
	{
		switch (widget) {
			case WID_RV_INFO_TAB: {
				const Company *c = Company::Get(_local_company);
				if (this->sel_engine[0] != INVALID_ENGINE) {
					if (!EngineHasReplacementForCompany(c, this->sel_engine[0], this->sel_group)) {
						SetDParam(0, STR_REPLACE_NOT_REPLACING);
					} else {
						bool when_old = false;
						EngineID e = EngineReplacementForCompany(c, this->sel_engine[0], this->sel_group, &when_old);
						SetDParam(0, when_old ? STR_REPLACE_REPLACING_WHEN_OLD : STR_ENGINE_NAME);
						SetDParam(1, e);
					}
				} else {
					SetDParam(0, STR_REPLACE_NOT_REPLACING_VEHICLE_SELECTED);
				}

				DrawString(r.left + WD_FRAMETEXT_LEFT, r.right - WD_FRAMETEXT_RIGHT, r.top + WD_FRAMERECT_TOP, STR_BLACK_STRING, TC_FROMSTRING, SA_HOR_CENTER);
				break;
			}

			case WID_RV_LEFT_MATRIX:
			case WID_RV_RIGHT_MATRIX: {
				int side = (widget == WID_RV_LEFT_MATRIX) ? 0 : 1;
				EngineID start  = this->vscroll[side]->GetPosition(); // what is the offset for the start (scrolling)
				EngineID end    = min(this->vscroll[side]->GetCapacity() + start, this->engines[side].Length());

				/* Do the actual drawing */
				DrawEngineList((VehicleType)this->window_number, r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP,
						&this->engines[side], start, end, this->sel_engine[side], side == 0, this->sel_group);
				break;
			}
		}
	}

	virtual void OnPaint()
	{
		if (this->engines[0].NeedRebuild() || this->engines[1].NeedRebuild()) this->GenerateLists();

		Company *c = Company::Get(_local_company);

		/* Disable the "Start Replacing" button if:
		 *    Either engines list is empty
		 * or The selected replacement engine has a replacement (to prevent loops). */
		this->SetWidgetDisabledState(WID_RV_START_REPLACE,
										this->sel_engine[0] == INVALID_ENGINE ||
										this->sel_engine[1] == INVALID_ENGINE ||
										EngineReplacementForCompany(c, this->sel_engine[1], this->sel_group) != INVALID_ENGINE);

		/* Disable the "Stop Replacing" button if:
		 *   The left engines list (existing vehicle) is empty
		 *   or The selected vehicle has no replacement set up */
		this->SetWidgetDisabledState(WID_RV_STOP_REPLACE,
										this->sel_engine[0] == INVALID_ENGINE ||
										!EngineHasReplacementForCompany(c, this->sel_engine[0], this->sel_group));

		if (this->window_number == VEH_TRAIN) {
			/* sets the colour of that art thing */
			this->GetWidget<NWidgetCore>(WID_RV_TRAIN_FLUFF_LEFT)->colour  = _company_colours[_local_company];
			this->GetWidget<NWidgetCore>(WID_RV_TRAIN_FLUFF_RIGHT)->colour = _company_colours[_local_company];

			/* Show the selected railtype in the pulldown menu */
			this->GetWidget<NWidgetCore>(WID_RV_TRAIN_RAILTYPE_DROPDOWN)->widget_data = GetRailTypeInfo(sel_railtype)->strings.replace_text;
		}

		this->DrawWidgets();

		if (!this->IsShaded()) {
			int needed_height = this->details_height;
			/* Draw details panels. */
			for (int side = 0; side < 2; side++) {
				if (this->sel_engine[side] != INVALID_ENGINE) {
					NWidgetBase *nwi = this->GetWidget<NWidgetBase>(side == 0 ? WID_RV_LEFT_DETAILS : WID_RV_RIGHT_DETAILS);
					int text_end = DrawVehiclePurchaseInfo(nwi->pos_x + WD_FRAMETEXT_LEFT, nwi->pos_x + nwi->current_x - WD_FRAMETEXT_RIGHT,
							nwi->pos_y + WD_FRAMERECT_TOP, this->sel_engine[side]);
					needed_height = max(needed_height, text_end - (int)nwi->pos_y + WD_FRAMERECT_BOTTOM);
				}
			}
			if (needed_height != this->details_height) { // Details window are not high enough, enlarge them.
				this->details_height = needed_height;
				this->ReInit();
				return;
			}
		}
	}

	virtual void OnClick(Point pt, int widget, int click_count)
	{
		switch (widget) {
			case WID_RV_TRAIN_ENGINEWAGON_TOGGLE:
				this->replace_engines  = !(this->replace_engines);
				this->engines[0].ForceRebuild();
				this->reset_sel_engine = true;
				this->SetDirty();
				break;

			case WID_RV_TRAIN_RAILTYPE_DROPDOWN: // Railtype selection dropdown menu
				ShowDropDownList(this, GetRailTypeDropDownList(true), sel_railtype, WID_RV_TRAIN_RAILTYPE_DROPDOWN);
				break;

			case WID_RV_TRAIN_WAGONREMOVE_TOGGLE: // toggle renew_keep_length
				DoCommandP(0, GetCompanySettingIndex("company.renew_keep_length"), Company::Get(_local_company)->settings.renew_keep_length ? 0 : 1, CMD_CHANGE_COMPANY_SETTING);
				break;

			case WID_RV_START_REPLACE: { // Start replacing
				if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
					this->HandleButtonClick(WID_RV_START_REPLACE);
					ReplaceClick_StartReplace(false);
				} else {
					bool replacment_when_old = EngineHasReplacementWhenOldForCompany(Company::Get(_local_company), this->sel_engine[0], this->sel_group);
					ShowDropDownMenu(this, _start_replace_dropdown, replacment_when_old ? 1 : 0, WID_RV_START_REPLACE, !this->replace_engines ? 1 << 1 : 0, 0);
				}
				break;
			}

			case WID_RV_STOP_REPLACE: { // Stop replacing
				EngineID veh_from = this->sel_engine[0];
				DoCommandP(0, this->sel_group << 16, veh_from + (INVALID_ENGINE << 16), CMD_SET_AUTOREPLACE);
				this->SetDirty();
				break;
			}

			case WID_RV_LEFT_MATRIX:
			case WID_RV_RIGHT_MATRIX: {
				byte click_side;
				if (widget == WID_RV_LEFT_MATRIX) {
					click_side = 0;
				} else {
					click_side = 1;
				}
				uint i = this->vscroll[click_side]->GetScrolledRowFromWidget(pt.y, this, widget);
				size_t engine_count = this->engines[click_side].Length();

				EngineID e = engine_count > i ? this->engines[click_side][i] : INVALID_ENGINE;
				if (e == this->sel_engine[click_side]) break; // we clicked the one we already selected
				this->sel_engine[click_side] = e;
				if (click_side == 0) {
					this->engines[1].ForceRebuild();
					this->reset_sel_engine = true;
				}
				this->SetDirty();
				break;
			}
		}
	}

	virtual void OnDropdownSelect(int widget, int index)
	{
		switch (widget) {
			case WID_RV_TRAIN_RAILTYPE_DROPDOWN: {
				RailType temp = (RailType)index;
				if (temp == sel_railtype) return; // we didn't select a new one. No need to change anything
				sel_railtype = temp;
				/* Reset scrollbar positions */
				this->vscroll[0]->SetPosition(0);
				this->vscroll[1]->SetPosition(0);
				/* Rebuild the lists */
				this->engines[0].ForceRebuild();
				this->engines[1].ForceRebuild();
				this->reset_sel_engine = true;
				this->SetDirty();
				break;
			}

			case WID_RV_START_REPLACE:
				this->ReplaceClick_StartReplace(index != 0);
				break;
		}
	}

	virtual void OnResize()
	{
		this->vscroll[0]->SetCapacityFromWidget(this, WID_RV_LEFT_MATRIX);
		this->vscroll[1]->SetCapacityFromWidget(this, WID_RV_RIGHT_MATRIX);

		this->GetWidget<NWidgetCore>(WID_RV_LEFT_MATRIX)->widget_data =
				this->GetWidget<NWidgetCore>(WID_RV_RIGHT_MATRIX)->widget_data = (this->vscroll[0]->GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);
	}

	/**
	 * 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.
	 */
	virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
	{
		if (data != 0) {
			/* This needs to be done in command-scope to enforce rebuilding before resorting invalid data */
			this->engines[0].ForceRebuild();
		} else {
			this->engines[1].ForceRebuild();
		}
	}
};

static const NWidgetPart _nested_replace_rail_vehicle_widgets[] = {
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_CLOSEBOX, COLOUR_GREY),
		NWidget(WWT_CAPTION, COLOUR_GREY, WID_RV_CAPTION), SetDataTip(STR_REPLACE_VEHICLES_WHITE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
		NWidget(WWT_SHADEBOX, COLOUR_GREY),
		NWidget(WWT_STICKYBOX, COLOUR_GREY),
	EndContainer(),
	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_LEFT_SCROLLBAR),
		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_RIGHT_SCROLLBAR),
	EndContainer(),
	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_LEFT_DETAILS), SetMinimalSize(228, 102), SetResize(1, 0), EndContainer(),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_RIGHT_DETAILS), SetMinimalSize(228, 102), SetResize(1, 0), EndContainer(),
	EndContainer(),
	NWidget(NWID_HORIZONTAL),
		NWidget(NWID_PUSHBUTTON_DROPDOWN, COLOUR_GREY, WID_RV_START_REPLACE), SetMinimalSize(139, 12), SetDataTip(STR_REPLACE_VEHICLES_START, STR_REPLACE_HELP_START_BUTTON),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_INFO_TAB), SetMinimalSize(167, 12), SetDataTip(0x0, STR_REPLACE_HELP_REPLACE_INFO_TAB), SetResize(1, 0),
		EndContainer(),
		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_RV_STOP_REPLACE), SetMinimalSize(150, 12), SetDataTip(STR_REPLACE_VEHICLES_STOP, STR_REPLACE_HELP_STOP_BUTTON),
	EndContainer(),
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_RV_TRAIN_ENGINEWAGON_TOGGLE), SetMinimalSize(139, 12), SetDataTip(STR_REPLACE_ENGINE_WAGON_SELECT, STR_REPLACE_ENGINE_WAGON_SELECT_HELP),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_TRAIN_FLUFF_LEFT), SetMinimalSize(15, 12), EndContainer(),
		NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_RV_TRAIN_RAILTYPE_DROPDOWN), SetMinimalSize(136, 12), SetDataTip(0x0, STR_REPLACE_HELP_RAILTYPE), SetResize(1, 0),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_TRAIN_FLUFF_RIGHT), SetMinimalSize(16, 12), EndContainer(),
		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_RV_TRAIN_WAGONREMOVE_TOGGLE), SetMinimalSize(138, 12), SetDataTip(STR_REPLACE_REMOVE_WAGON, STR_REPLACE_REMOVE_WAGON_HELP),
		NWidget(WWT_RESIZEBOX, COLOUR_GREY),
	EndContainer(),
};

static const WindowDesc _replace_rail_vehicle_desc(
	WDP_AUTO, 456, 140,
	WC_REPLACE_VEHICLE, WC_NONE,
	WDF_UNCLICK_BUTTONS | WDF_CONSTRUCTION,
	_nested_replace_rail_vehicle_widgets, lengthof(_nested_replace_rail_vehicle_widgets)
);

static const NWidgetPart _nested_replace_vehicle_widgets[] = {
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_CLOSEBOX, COLOUR_GREY),
		NWidget(WWT_CAPTION, COLOUR_GREY, WID_RV_CAPTION), SetMinimalSize(433, 14), SetDataTip(STR_REPLACE_VEHICLES_WHITE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
		NWidget(WWT_SHADEBOX, COLOUR_GREY),
		NWidget(WWT_STICKYBOX, COLOUR_GREY),
	EndContainer(),
	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_LEFT_SCROLLBAR),
		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_RIGHT_SCROLLBAR),
	EndContainer(),
	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_LEFT_DETAILS), SetMinimalSize(228, 92), SetResize(1, 0), EndContainer(),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_RIGHT_DETAILS), SetMinimalSize(228, 92), SetResize(1, 0), EndContainer(),
	EndContainer(),
	NWidget(NWID_HORIZONTAL),
		NWidget(NWID_PUSHBUTTON_DROPDOWN, COLOUR_GREY, WID_RV_START_REPLACE), SetMinimalSize(139, 12), SetDataTip(STR_REPLACE_VEHICLES_START, STR_REPLACE_HELP_START_BUTTON),
		NWidget(WWT_PANEL, COLOUR_GREY, WID_RV_INFO_TAB), SetMinimalSize(167, 12), SetDataTip(0x0, STR_REPLACE_HELP_REPLACE_INFO_TAB), SetResize(1, 0), EndContainer(),
		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_RV_STOP_REPLACE), SetMinimalSize(138, 12), SetDataTip(STR_REPLACE_VEHICLES_STOP, STR_REPLACE_HELP_STOP_BUTTON),
		NWidget(WWT_RESIZEBOX, COLOUR_GREY),
	EndContainer(),
};

static const WindowDesc _replace_vehicle_desc(
	WDP_AUTO, 456, 118,
	WC_REPLACE_VEHICLE, WC_NONE,
	WDF_UNCLICK_BUTTONS | WDF_CONSTRUCTION,
	_nested_replace_vehicle_widgets, lengthof(_nested_replace_vehicle_widgets)
);

/**
 * Show the autoreplace configuration window for a particular group.
 * @param id_g The group to replace the vehicles for.
 * @param vehicletype The type of vehicles in the group.
 */
void ShowReplaceGroupVehicleWindow(GroupID id_g, VehicleType vehicletype)
{
	DeleteWindowById(WC_REPLACE_VEHICLE, vehicletype);
	new ReplaceVehicleWindow(vehicletype == VEH_TRAIN ? &_replace_rail_vehicle_desc : &_replace_vehicle_desc, vehicletype, id_g);
}