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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "gui.h"

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#include "textbuf_gui.h"

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#include "window_gui.h"

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#include "player_gui.h"

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#include "signs_base.h"

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#include "signs_func.h"

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#include "debug.h"

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#include "variables.h"

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#include "command_func.h"

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#include "strings_func.h"

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#include "core/alloc_func.hpp"

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#include "window_func.h"

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#include "map_func.h"

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#include "gfx_func.h"

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#include "viewport_func.h"

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#include "table/strings.h"

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#include "table/sprites.h"

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static const Sign **_sign_sort;

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static uint _num_sign_sort;

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static char _bufcache[64];

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static const Sign *_last_sign;

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static int CDECL SignNameSorter(const void *a, const void *b)

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{

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	const Sign *sign0 = *(const Sign**)a;

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	const Sign *sign1 = *(const Sign**)b;

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	char buf1[64];

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	SetDParam(0, sign0->index);

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	GetString(buf1, STR_SIGN_NAME, lastof(buf1));

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	if (sign1 != _last_sign) {

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		_last_sign = sign1;

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		SetDParam(0, sign1->index);

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		GetString(_bufcache, STR_SIGN_NAME, lastof(_bufcache));

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	}

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	return strcmp(buf1, _bufcache); // sort by name

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}

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static void GlobalSortSignList()

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{

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	const Sign *si;

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	uint n = 0;

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	/* Create array for sorting */

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	_sign_sort = ReallocT(_sign_sort, GetMaxSignIndex() + 1);

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	FOR_ALL_SIGNS(si) _sign_sort[n++] = si;

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	_num_sign_sort = n;

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	qsort((void*)_sign_sort, n, sizeof(_sign_sort[0]), SignNameSorter);

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	_sign_sort_dirty = false;

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	DEBUG(misc, 3, "Resorting global signs list");

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}

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static void SignListWndProc(Window *w, WindowEvent *e)

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{

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	switch (e->event) {

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		case WE_PAINT: {

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			if (_sign_sort_dirty) GlobalSortSignList();

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			SetVScrollCount(w, _num_sign_sort);

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			SetDParam(0, w->vscroll.count);

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			DrawWindowWidgets(w);

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			/* No signs? */

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			int y = 16; // offset from top of widget

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			if (w->vscroll.count == 0) {

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				DrawString(2, y, STR_304A_NONE, TC_FROMSTRING);

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				return;

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			}

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			/* Start drawing the signs */

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			for (uint16 i = w->vscroll.pos; i < w->vscroll.cap + w->vscroll.pos && i < w->vscroll.count; i++) {

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				const Sign *si = _sign_sort[i];

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				if (si->owner != OWNER_NONE) DrawPlayerIcon(si->owner, 4, y + 1);

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				SetDParam(0, si->index);

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				DrawString(22, y, STR_SIGN_NAME, TC_YELLOW);

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				y += 10;

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			}

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		} break;

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		case WE_CLICK:

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			if (e->we.click.widget == 3) {

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				uint32 id_v = (e->we.click.pt.y - 15) / 10;

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				if (id_v >= w->vscroll.cap) return;

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				id_v += w->vscroll.pos;

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				if (id_v >= w->vscroll.count) return;

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				const Sign *si = _sign_sort[id_v];

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				ScrollMainWindowToTile(TileVirtXY(si->x, si->y));

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			}

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			break;

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		case WE_RESIZE:

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			w->vscroll.cap += e->we.sizing.diff.y / 10;

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			break;

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	}

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}

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static const Widget _sign_list_widget[] = {

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{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,              STR_018B_CLOSE_WINDOW},

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{    WWT_CAPTION,  RESIZE_RIGHT,    14,    11,   345,     0,    13, STR_SIGN_LIST_CAPTION, STR_018C_WINDOW_TITLE_DRAG_THIS},

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{  WWT_STICKYBOX,     RESIZE_LR,    14,   346,   357,     0,    13, 0x0,                   STR_STICKY_BUTTON},

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{      WWT_PANEL,     RESIZE_RB,    14,     0,   345,    14,   137, 0x0,                   STR_NULL},

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{  WWT_SCROLLBAR,    RESIZE_LRB,    14,   346,   357,    14,   125, 0x0,                   STR_0190_SCROLL_BAR_SCROLLS_LIST},

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{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   346,   357,   126,   137, 0x0,                   STR_RESIZE_BUTTON},

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{   WIDGETS_END},

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};

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static const WindowDesc _sign_list_desc = {

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	WDP_AUTO, WDP_AUTO, 358, 138, 358, 138,

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	WC_SIGN_LIST, WC_NONE,

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	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_STICKY_BUTTON | WDF_RESIZABLE,

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	_sign_list_widget,

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	SignListWndProc

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};

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void ShowSignList()

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{

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	Window *w = AllocateWindowDescFront(&_sign_list_desc, 0);

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	if (w != NULL) {

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		w->vscroll.cap = 12;

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		w->resize.step_height = 10;

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		w->resize.height = w->height - 10 * 7; // minimum if 5 in the list

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	}

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}

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/** Edit sign window stuff */

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struct editsign_d : querystr_d {

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	SignID cur_sign;

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};

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assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(editsign_d));

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enum QueryEditSignWidgets {

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	QUERY_EDIT_SIGN_WIDGET_TEXT = 3,

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	QUERY_EDIT_SIGN_WIDGET_OK,

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	QUERY_EDIT_SIGN_WIDGET_CANCEL,

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	QUERY_EDIT_SIGN_WIDGET_DELETE,

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	QUERY_EDIT_SIGN_WIDGET_PREVIOUS = QUERY_EDIT_SIGN_WIDGET_DELETE + 2,

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	QUERY_EDIT_SIGN_WIDGET_NEXT,

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};

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static void UpdateSignEditWindow(Window *w, const Sign *si)

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{

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	/* Display an empty string when the sign hasnt been edited yet */

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	if (si->name != NULL) {

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		SetDParam(0, si->index);

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		GetString(_edit_str_buf, STR_SIGN_NAME, lastof(_edit_str_buf));

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	} else {

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		GetString(_edit_str_buf, STR_EMPTY, lastof(_edit_str_buf));

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	}

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	_edit_str_buf[lengthof(_edit_str_buf) - 1] = '\0';

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	WP(w, editsign_d).cur_sign = si->index;

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	InitializeTextBuffer(&WP(w, querystr_d).text, _edit_str_buf, 31, 255); // Allow 31 characters (including \0)

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	w->InvalidateWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);

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}

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static void RenameSign(SignID index, const char *text)

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{

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	_cmd_text = text;

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	DoCommandP(0, index, 0, NULL, CMD_RENAME_SIGN | CMD_MSG(STR_280C_CAN_T_CHANGE_SIGN_NAME));

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}

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static void QuerySignEditWndProc(Window *w, WindowEvent *e)

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{

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	editsign_d *qs = &WP(w, editsign_d);

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	Sign       *si;

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	uint       sign_index = 0;

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	switch (e->event) {

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		case WE_CREATE:

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			SetBit(_no_scroll, SCROLL_EDIT);

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			break;

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		case WE_PAINT:

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			SetDParam(0, qs->caption);

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			DrawWindowWidgets(w);

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			DrawEditBox(w, qs, QUERY_EDIT_SIGN_WIDGET_TEXT);

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			break;

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		case WE_CLICK:

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			switch (e->we.click.widget) {

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				case QUERY_EDIT_SIGN_WIDGET_PREVIOUS:

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					if (_sign_sort_dirty) GlobalSortSignList();

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					sign_index = _sign_sort[_num_sign_sort - 1]->index;

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					for (uint i = 1; i < _num_sign_sort; i++) {

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						if (qs->cur_sign == _sign_sort[i]->index) {

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							sign_index = _sign_sort[i - 1]->index;

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							break;

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						}

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					}

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					si = GetSign(sign_index);

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					/* Scroll to sign and reopen window */

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					ScrollMainWindowToTile(TileVirtXY(si->x, si->y));

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					UpdateSignEditWindow(w, si);

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					break;

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				case QUERY_EDIT_SIGN_WIDGET_NEXT:

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					if (_sign_sort_dirty) GlobalSortSignList();

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					sign_index = _sign_sort[0]->index;

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					for (uint i = 0; i < _num_sign_sort - 1; i++) {

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						if (qs->cur_sign == _sign_sort[i]->index) {

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							sign_index = _sign_sort[i + 1]->index;

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							break;

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						}

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					}

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					si = GetSign(sign_index);

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					/* Scroll to sign and reopen window */

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					ScrollMainWindowToTile(TileVirtXY(si->x, si->y));

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					UpdateSignEditWindow(w, si);

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					break;

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				case QUERY_EDIT_SIGN_WIDGET_TEXT:

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					ShowOnScreenKeyboard(w, qs, e->we.click.widget, QUERY_EDIT_SIGN_WIDGET_CANCEL, QUERY_EDIT_SIGN_WIDGET_OK);

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					break;

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				case QUERY_EDIT_SIGN_WIDGET_DELETE:

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					/* Only need to set the buffer to null, the rest is handled as the OK button */

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					DeleteTextBufferAll(&qs->text);

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					/* FALL THROUGH */

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				case QUERY_EDIT_SIGN_WIDGET_OK:

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					RenameSign(qs->cur_sign, qs->text.buf);

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					/* FALL THROUGH */

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				case QUERY_EDIT_SIGN_WIDGET_CANCEL:

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					DeleteWindow(w);

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					break;

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			}

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			break;

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		case WE_KEYPRESS:

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			switch (HandleEditBoxKey(w, qs, QUERY_EDIT_SIGN_WIDGET_TEXT, e)) {

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				case 1: // Enter pressed, confirms change

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					RenameSign(qs->cur_sign, qs->text.buf);

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					/* FALL THROUGH */

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				case 2: // ESC pressed, closes window, abandons changes

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					DeleteWindow(w);

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					break;

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			}

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			break;

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		case WE_MOUSELOOP:

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			HandleEditBox(w, qs, QUERY_EDIT_SIGN_WIDGET_TEXT);

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			break;

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		case WE_DESTROY:

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			ClrBit(_no_scroll, SCROLL_EDIT);

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			break;

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	}

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}

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static const Widget _query_sign_edit_widgets[] = {

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{ WWT_CLOSEBOX, RESIZE_NONE,  14,   0,  10,   0,  13, STR_00C5,          STR_018B_CLOSE_WINDOW},

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{  WWT_CAPTION, RESIZE_NONE,  14,  11, 259,   0,  13, STR_012D,          STR_NULL },

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{    WWT_PANEL, RESIZE_NONE,  14,   0, 259,  14,  29, STR_NULL,          STR_NULL },

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{  WWT_EDITBOX, RESIZE_NONE,  14,   2, 257,  16,  27, STR_SIGN_OSKTITLE, STR_NULL },  // Text field

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{  WWT_TEXTBTN, RESIZE_NONE,  14,   0,  60,  30,  41, STR_012F_OK,       STR_NULL },

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{  WWT_TEXTBTN, RESIZE_NONE,  14,  61, 120,  30,  41, STR_012E_CANCEL,   STR_NULL },

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{  WWT_TEXTBTN, RESIZE_NONE,  14, 121, 180,  30,  41, STR_0290_DELETE,   STR_NULL },

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{    WWT_PANEL, RESIZE_NONE,  14, 181, 237,  30,  41, STR_NULL,          STR_NULL },

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{  WWT_TEXTBTN, RESIZE_NONE,  14, 238, 248,  30,  41, STR_6819,          STR_PREVIOUS_SIGN_TOOLTIP },

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{  WWT_TEXTBTN, RESIZE_NONE,  14, 249, 259,  30,  41, STR_681A,          STR_NEXT_SIGN_TOOLTIP },

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{ WIDGETS_END },

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};

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static const WindowDesc _query_sign_edit_desc = {

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	190, 170, 260, 42, 260, 42,

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	WC_QUERY_STRING, WC_NONE,

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	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET,

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	_query_sign_edit_widgets,

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	QuerySignEditWndProc

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};

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void ShowRenameSignWindow(const Sign *si)

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{

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	/* Delete all other edit windows and the save window */

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	DeleteWindowById(WC_QUERY_STRING, 0);

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	DeleteWindowById(WC_SAVELOAD, 0);

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	Window *w = AllocateWindowDesc(&_query_sign_edit_desc);

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	WP(w, editsign_d).caption = STR_280B_EDIT_SIGN_TEXT;

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	WP(w, editsign_d).afilter = CS_ALPHANUMERAL;

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	w->LowerWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);

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	UpdateSignEditWindow(w, si);

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}