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/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file dropdown_type.h Types related to the drop down widget. */
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#ifndef WIDGETS_DROPDOWN_TYPE_H
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#define WIDGETS_DROPDOWN_TYPE_H
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#include "../window_type.h"
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#include <list>
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/**
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* Base list item class from which others are derived. If placed in a list it
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* will appear as a horizontal line in the menu.
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*/
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class DropDownListItem {
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public:
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int result; ///< Result code to return to window on selection
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bool masked; ///< Masked and unselectable item
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DropDownListItem(int result, bool masked) : result(result), masked(masked) {}
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virtual ~DropDownListItem() {}
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virtual bool Selectable() const { return false; }
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virtual uint Height(uint width) const { return FONT_HEIGHT_NORMAL; }
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virtual uint Width() const { return 0; }
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virtual void Draw(int left, int right, int top, int bottom, bool sel, int bg_colour) const;
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};
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/**
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* Common string list item.
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*/
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class DropDownListStringItem : public DropDownListItem {
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public:
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StringID string; ///< String ID of item
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DropDownListStringItem(StringID string, int result, bool masked) : DropDownListItem(result, masked), string(string) {}
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virtual ~DropDownListStringItem() {}
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virtual bool Selectable() const { return true; }
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virtual uint Width() const;
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virtual void Draw(int left, int right, int top, int bottom, bool sel, int bg_colour) const;
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virtual StringID String() const { return this->string; }
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};
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/**
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* String list item with parameters.
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*/
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class DropDownListParamStringItem : public DropDownListStringItem {
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public:
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uint64 decode_params[10]; ///< Parameters of the string
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DropDownListParamStringItem(StringID string, int result, bool masked) : DropDownListStringItem(string, result, masked) {}
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virtual ~DropDownListParamStringItem() {}
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virtual StringID String() const;
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virtual void SetParam(uint index, uint64 value) { decode_params[index] = value; }
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};
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/**
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* List item containing a C char string.
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*/
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class DropDownListCharStringItem : public DropDownListItem {
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public:
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const char *string;
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DropDownListCharStringItem(const char *string, int result, bool masked) : DropDownListItem(result, masked), string(string) {}
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virtual ~DropDownListCharStringItem() {}
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virtual bool Selectable() const { return true; }
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virtual uint Width() const;
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virtual void Draw(int left, int right, int top, int bottom, bool sel, int bg_colour) const;
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};
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/**
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* A drop down list is a collection of drop down list items.
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*/
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typedef std::list<DropDownListItem *> DropDownList;
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/**
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* Show a drop down list.
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* @param w Parent window for the list.
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* @param list Prepopulated DropDownList. Will be deleted when the list is
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* closed.
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* @param selected The initially selected list item.
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* @param button The widget within the parent window that is used to determine
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* the list's location.
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* @param width Override the width determined by the selected widget.
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* @param auto_width Maximum width is determined by the widest item in the list.
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* @param instant_close Set to true if releasing mouse button should close the
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* list regardless of where the cursor is.
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*/
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void ShowDropDownList(Window *w, DropDownList *list, int selected, int button, uint width = 0, bool auto_width = false, bool instant_close = false);
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#endif /* WIDGETS_DROPDOWN_TYPE_H */
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