Torque3D/Engine/source/platform/menus/popupMenu.h
2015-01-18 22:52:29 +01:00

190 lines
7.4 KiB
C++

//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "console/simBase.h"
#include "core/util/tVector.h"
#include "util/messaging/dispatcher.h"
#include "gui/core/guiCanvas.h"
#ifndef _POPUPMENU_H_
#define _POPUPMENU_H_
// Forward ref used by the platform code
struct PlatformPopupMenuData;
class MenuBar;
// PopupMenu represents a menu.
// You can add menu items to the menu, but there is no torque object associated
// with these menu items, they exist only in a platform specific manner.
class PopupMenu : public SimObject, public virtual Dispatcher::IMessageListener
{
typedef SimObject Parent;
friend class MenuBar;
private:
/// Used by MenuBar to attach the menu to the menu bar. Do not use anywhere else.
void attachToMenuBar(GuiCanvas *owner, S32 pos);
protected:
PlatformPopupMenuData *mData;
SimSet *mSubmenus;
SimObjectPtr<GuiCanvas> mCanvas;
StringTableEntry mBarTitle;
U32 mPopupGUID;
bool mIsPopup;
public:
PopupMenu();
virtual ~PopupMenu();
void createPlatformPopupMenuData();
void deletePlatformPopupMenuData();
DECLARE_CONOBJECT(PopupMenu);
static void initPersistFields();
virtual bool onAdd();
virtual void onRemove();
static PopupMenuEvent smPopupMenuEvent;
static bool smSelectionEventHandled; /// Set to true if any menu or submenu handles a selection event
/// Creates the platform specific menu object, a peer to this object.
/// The platform menu *must* exist before calling any method that manipulates
/// menu items or displays the menu.
/// implementd on a per-platform basis.
void createPlatformMenu();
void setBarTitle(const char * val) { mBarTitle = StringTable->insert(val, true); }
StringTableEntry getBarTitle() const { return mBarTitle; }
/// pass NULL for @p title to insert a separator
/// returns the menu item's ID, or -1 on failure.
/// implementd on a per-platform basis.
/// TODO: factor out common code
S32 insertItem(S32 pos, const char *title, const char* accelerator, const char* cmd);
/// Sets the name title and accelerator for
/// an existing item.
bool setItem(S32 pos, const char *title, const char* accelerator, const char* cmd);
/// pass NULL for @p title to insert a separator
/// returns the menu item's ID, or -1 on failure.
/// adds the submenu to the mSubmenus vector.
/// implemented on a per-platform basis.
/// TODO: factor out common code
S32 insertSubMenu(S32 pos, const char *title, PopupMenu *submenu);
/// remove the menu item at @p itemPos
/// if the item has a submenu, it is removed from the mSubmenus list.
/// implemented on a per-platform basis.
/// TODO: factor out common code
void removeItem(S32 itemPos);
/// implemented on a per-platform basis.
void enableItem(S32 pos, bool enable);
/// implemented on a per-platform basis.
void checkItem(S32 pos, bool checked);
/// All items at positions firstPos through lastPos are unchecked, and the
/// item at checkPos is checked.
/// implemented on a per-platform basis.
void checkRadioItem(S32 firstPos, S32 lastPos, S32 checkPos);
bool isItemChecked(S32 pos);
/// Returns the number of items in the menu.
U32 getItemCount();
/// Returns the popup GUID
U32 getPopupGUID() { return mPopupGUID; }
//-----------------------------------------------------------------------------
// New code should not use these methods directly, use the menu bar instead.
//
// They remain for compatibility with old code and will be changing/going away
// once the existing code is moved over to the menu bar.
//-----------------------------------------------------------------------------
/// Places this menu in the menu bar of the application's main window.
/// @param owner The GuiCanvas that owns the PlatformWindow that this call is associated with
/// @param pos The relative position at which to place the menu.
/// @param title The name of the menu
void attachToMenuBar(GuiCanvas *owner, S32 pos, const char *title);
/// Removes this menu from the menu bar.
void removeFromMenuBar();
//-----------------------------------------------------------------------------
/// Called when the menu has been attached to the menu bar
void onAttachToMenuBar(GuiCanvas *canvas, S32 pos, const char *title);
/// Called when the menu has been removed from the menu bar
void onRemoveFromMenuBar(GuiCanvas *canvas);
/// Returns the position index of this menu on the bar.
S32 getPosOnMenuBar();
/// Returns true if this menu is attached to the menu bar
bool isAttachedToMenuBar() { return mCanvas != NULL; }
/// Displays this menu as a popup menu and blocks until the user has selected
/// an item.
/// @param canvas the owner to show this popup associated with
/// @param x window local x coordinate at which to display the popup menu
/// @param y window local y coordinate at which to display the popup menu
/// implemented on a per-platform basis.
void showPopup(GuiCanvas *owner, S32 x = -1, S32 y = -1);
/// Returns true iff this menu contains an item that matches @p iD.
/// implemented on a per-platform basis.
/// TODO: factor out common code
bool canHandleID(U32 iD);
/// A menu item in this menu has been selected by id.
/// Submenus are given a chance to respond to the command first.
/// If no submenu can handle the command id, this menu handles it.
/// The script callback this::onSelectItem( position, text) is called.
/// If @p text is null, then the text arg passed to script is the text of
/// the selected menu item.
/// implemented on a per-platform basis.
/// TODO: factor out common code
bool handleSelect(U32 command, const char *text = NULL);
void onMenuSelect();
/// Helper function to allow menu selections from signal events.
/// Wraps canHandleID() and handleSelect() in one function
/// without changing their internal functionality, so
/// it should work regardless of platform.
void handleSelectEvent(U32 popID, U32 command);
virtual bool onMessageReceived(StringTableEntry queue, const char* event, const char* data );
virtual bool onMessageObjectReceived(StringTableEntry queue, Message *msg );
};
#endif // _POPUPMENU_H_