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/* $Id$ */

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/** @file signs_gui.cpp The GUI for signs. */

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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 "querystring_gui.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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	}

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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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};

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void ShowSignList()

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{

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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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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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struct SignWindow : QueryStringBaseWindow {

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	SignID cur_sign;

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	SignWindow(const WindowDesc *desc, const Sign *si) : QueryStringBaseWindow(desc)

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	{

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		SetBit(_no_scroll, SCROLL_EDIT);

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		this->caption = STR_280B_EDIT_SIGN_TEXT;

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		this->afilter = CS_ALPHANUMERAL;

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		this->LowerWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);

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		UpdateSignEditWindow(si);

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	}

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	~SignWindow()

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	{

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		ClrBit(_no_scroll, SCROLL_EDIT);

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	}

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	void UpdateSignEditWindow(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(this->edit_str_buf, STR_SIGN_NAME, lastof(this->edit_str_buf));

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		} else {

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			GetString(this->edit_str_buf, STR_EMPTY, lastof(this->edit_str_buf));

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		}

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		this->edit_str_buf[lengthof(this->edit_str_buf) - 1] = '\0';

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		this->cur_sign = si->index;

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		InitializeTextBuffer(&this->text, this->edit_str_buf, 31, 255); // Allow 31 characters (including \0)

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		this->InvalidateWidget(QUERY_EDIT_SIGN_WIDGET_TEXT);

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	}

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	virtual void OnPaint()

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	{

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		SetDParam(0, this->caption);

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		this->DrawWidgets();

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		this->DrawEditBox(QUERY_EDIT_SIGN_WIDGET_TEXT);

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	}

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	virtual void OnClick(Point pt, int widget)

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	{

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		switch (widget) {

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			case QUERY_EDIT_SIGN_WIDGET_PREVIOUS: {

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				if (_sign_sort_dirty) GlobalSortSignList();

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				SignID 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 (this->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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				const Sign *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(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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				SignID 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 (this->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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				const Sign *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(si);

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			} break;

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			case QUERY_EDIT_SIGN_WIDGET_TEXT:

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				ShowOnScreenKeyboard(this, 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(&this->text);

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				/* FALL THROUGH */

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			case QUERY_EDIT_SIGN_WIDGET_OK:

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

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				/* FALL THROUGH */

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			case QUERY_EDIT_SIGN_WIDGET_CANCEL:

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				delete this;

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				break;

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		}

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	}

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	{

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			case 1: // Enter pressed, confirms change

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

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				/* FALL THROUGH */

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

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				delete this;

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				break;

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		}

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	}

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	virtual void OnMouseLoop()

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	{

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		this->HandleEditBox(QUERY_EDIT_SIGN_WIDGET_TEXT);

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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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};

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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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	new SignWindow(&_query_sign_edit_desc, si);

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}