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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 querystring_gui.h Base for the GUIs that have an edit box in them. */
#ifndef QUERYSTRING_GUI_H
#define QUERYSTRING_GUI_H
#include "textbuf_gui.h"
#include "window_gui.h"
/**
* Return values for HandleEditBoxKey
*/
enum HandleEditBoxResult
{
HEBR_EDITING = 0, // Other key pressed.
HEBR_CONFIRM, // Return or enter key pressed.
HEBR_CANCEL, // Escape key pressed.
HEBR_NOT_FOCUSED, // Edit box widget not focused.
};
/**
* Data stored about a string that can be modified in the GUI
*/
struct QueryString {
StringID caption;
Textbuf text;
const char *orig;
CharSetFilter afilter;
bool handled;
/**
* Make sure everything gets initialized properly.
*/
QueryString() : orig(NULL)
{
}
/**
* Make sure everything gets freed.
*/
~QueryString()
{
free(this->orig);
}
private:
bool HasEditBoxFocus(const Window *w, int wid) const;
public:
void DrawEditBox(Window *w, int wid);
void HandleEditBox(Window *w, int wid);
HandleEditBoxResult HandleEditBoxKey(Window *w, int wid, uint16 key, uint16 keycode, EventState &state);
};
struct QueryStringBaseWindow : public Window, public QueryString {
char *edit_str_buf; ///< Buffer for string.
const uint16 edit_str_size; ///< Maximum length of string (in bytes), including terminating '\0'.
const uint16 max_chars; ///< Maximum length of string (in characters), including terminating '\0'.
QueryStringBaseWindow(uint16 size, uint16 chars = UINT16_MAX) : Window(), edit_str_size(size), max_chars(chars == UINT16_MAX ? size : chars)
{
assert(size != 0);
this->edit_str_buf = CallocT<char>(size);
}
~QueryStringBaseWindow()
{
free(this->edit_str_buf);
}
void DrawEditBox(int wid);
void HandleEditBox(int wid);
HandleEditBoxResult HandleEditBoxKey(int wid, uint16 key, uint16 keycode, EventState &state);
/**
* Callback for when the OSK window is opened.
* @param wid The widget the OSK is opened of.
*/
virtual void OnOpenOSKWindow(int wid);
/**
* Callback for when on input has been entered with the OSK.
* @param wid The widget the OSK was attached to.
*/
virtual void OnOSKInput(int wid) {}
};
void ShowOnScreenKeyboard(QueryStringBaseWindow *parent, int button, int cancel, int ok);
void UpdateOSKOriginalText(const QueryStringBaseWindow *parent, int button);
#endif /* QUERYSTRING_GUI_H */
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