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CEGUIWindowManager.h
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/************************************************************************
filename: CEGUIWindowManager.h
created: 21/2/2004
author: Paul D Turner
purpose: Defines the interface for the WindowManager object
*************************************************************************/
/*************************************************************************
Crazy Eddie's GUI System (http://www.cegui.org.uk)
Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*************************************************************************/
#ifndef _CEGUIWindowManager_h_
#define _CEGUIWindowManager_h_
#include "CEGUIBase.h"
#include "CEGUIString.h"
#include "CEGUISingleton.h"
#include "CEGUILogger.h"
#include "CEGUIIteratorBase.h"
#include <map>
#include <vector>
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable : 4275)
# pragma warning(disable : 4251)
#endif
// Start of CEGUI namespace section
namespace CEGUI
{
/*!
\brief
The WindowManager class describes an object that manages creation and lifetime of Window objects.
The WindowManager is the means by which Window objects are created and destroyed. For each sub-class
of Window that is to be created, there must exist a WindowFactory object which is registered with the
WindowFactoryManager. Additionally, the WindowManager tracks every Window object created, and can be
used to access those Window objects by name.
*/
class CEGUIEXPORT WindowManager : public Singleton <WindowManager>
{
public:
/*************************************************************************
Public static data
*************************************************************************/
static const String GeneratedWindowNameBase; //!< Base name to use for generated window names.
/*!
\brief
Function type that is used as a callback when loading layouts from XML; the function is called
for each Property element encountered.
\param window
Window object that the property is to be applied to.
\param propname
String holding the name of the property that is being set.
\param propvalue
String holding the new value that will be applied to the property specified by /a propname.
\param userdata
Some client code supplied data.
\return
- true if the property should be set.
- false if the property should not be set,
*/
typedef bool PropertyCallback(Window* window, String& propname, String& propvalue, void* userdata);
/*************************************************************************
Construction and Destruction
*************************************************************************/
/*!
\brief
Constructs a new WindowManager object.
NB: Client code should not create WindowManager objects - they are of limited use to you! The
intended pattern of access is to get a pointer to the GUI system's WindowManager via the System
object, and use that.
*/
WindowManager(void);
/*!
\brief
Destructor for WindowManager objects
This will properly destry all remaining Window objects. Note that WindowFactory objects will not
be destroyed (since they are owned by whoever created them).
*/
~WindowManager(void);
/*!
\brief
Return singleton WindowManager object
\return
Singleton WindowManager object
*/
static WindowManager& getSingleton(void);
/*!
\brief
Return pointer to singleton WindowManager object
\return
Pointer to singleton WindowManager object
*/
static WindowManager* getSingletonPtr(void);
/*************************************************************************
Window Related Methods
*************************************************************************/
/*!
\brief
Creates a new Window object of the specified type, and gives it the specified unique name.
\param type
String that describes the type of Window to be created. A valid WindowFactory for the specified type must be registered.
\param name
String that holds a unique name that is to be given to the new window. If this string is empty (""), a name
will be generated for the window.
\return
Pointer to the newly created Window object.
\exception AlreadyExistsException A Window object with the name \a name already exists.
\exception UnknownObjectException No WindowFactory is registered for \a type Window objects.
\exception GenericException Some other error occurred (Exception message has details).
*/
Window* createWindow(const String& type, const String& name = "");
/*!
\brief
Destroy the specified Window object.
\param window
Pointer to the Window object to be destroyed. If the \a window is null, or is not recognised, nothing happens.
\return
Nothing
\exception InvalidRequestException Can be thrown if the WindowFactory for \a window's object type was removed.
*/
void destroyWindow(Window* window);
/*!
\brief
Destroy the specified Window object.
\param
window String containing the name of the Window object to be destroyed. If \a window is not recognised, nothing happens.
\return
Nothing.
\exception InvalidRequestException Can be thrown if the WindowFactory for \a window's object type was removed.
*/
void destroyWindow(const String& window);
/*!
\brief
Return a pointer to the specified Window object.
\param name
String holding the name of the Window object to be returned.
\return
Pointer to the Window object with the name \a name.
\exception UnknownObjectException No Window object with a name matching \a name was found.
*/
Window* getWindow(const String& name) const;
/*!
\brief
Examines the list of Window objects to see if one exists with the given name
\param name
String holding the name of the Window object to look for.
\return
true if a Window object was found with a name matching \a name. false if no matching Window object was found.
*/
bool isWindowPresent(const String& name) const;
/*!
\brief
Destroys all Window objects within the system
\return
Nothing.
\exception InvalidRequestException Thrown if the WindowFactory for any Window object type has been removed.
*/
void destroyAllWindows(void);
/*!
\brief
Creates a set of windows (a Gui layout) from the information in the specified XML file.
\param filename
String object holding the filename of the XML file to be processed.
\param name_prefix
String object holding the prefix that is to be used when creating the windows in the layout file, this
function allows a layout to be loaded multiple times without having name clashes. Note that if you use
this facility, then all windows defined within the layout must have names assigned; you currently can not
use this feature in combination with automatically generated window names.
\param resourceGroup
Resource group identifier to be passed to the resource provider when loading the layout file.
\param callback
PropertyCallback function to be called for each Property element loaded from the layout. This is
called prior to the property value being applied to the window enabling client code manipulation of
properties.
\param userdata
Client code data pointer passed to the PropertyCallback function.
\return
Pointer to the root Window object defined in the layout.
\exception FileIOException thrown if something goes wrong while processing the file \a filename.
\exception InvalidRequestException thrown if \a filename appears to be invalid.
*/
Window* loadWindowLayout(const String& filename, const String& name_prefix = "", const String& resourceGroup = "", PropertyCallback* callback = NULL, void* userdata = NULL);
/*!
\brief
Return whether the window dead pool is empty.
\return
- true if there are no windows in the dead pool.
- false if the dead pool contains >=1 window awaiting destruction.
*/
bool isDeadPoolEmpty(void) const;
/*!
\brief
Permanently destroys any windows placed in the dead pool.
\note
It is probably not a good idea to call this from a Window based event handler
if the specific window has been or is being destroyed.
\return
Nothing.
*/
void cleanDeadPool(void);
/*!
\brief
Writes a full XML window layout, starting at the given Window to the given OutStream.
\param window
Window object to become the root of the layout.
\param out_stream
OutStream (std::ostream based) object where data is to be sent.
\param writeParent
If the starting window has a parent window, specifies whether to write the parent name into
the Parent attribute of the GUILayout XML element.
\return
Nothing.
*/
void writeWindowLayoutToStream(const Window& window, OutStream& out_stream, bool writeParent = false) const;
/*!
\brief
Writes a full XML window layout, starting at the given Window to the given OutStream.
\param window
String holding the name of the Window object to become the root of the layout.
\param out_stream
OutStream (std::ostream based) object where data is to be sent.
\param writeParent
If the starting window has a parent window, specifies whether to write the parent name into
the Parent attribute of the GUILayout XML element.
\return
Nothing.
*/
void writeWindowLayoutToStream(const String& window, OutStream& out_stream, bool writeParent = false) const;
/*!
\brief
Rename a window.
\param window
String holding the current name of the window to be renamed.
\param new_name
String holding the new name for the window
\exception UnknownObjectException
thrown if \a window is not known in the system.
\exception AlreadyExistsException
thrown if a Window named \a new_name already exists.
*/
void renameWindow(const String& window, const String& new_name);
/*!
\brief
Rename a window.
\param window
Pointer to the window to be renamed.
\param new_name
String holding the new name for the window
\exception AlreadyExistsException
thrown if a Window named \a new_name already exists.
*/
void renameWindow(Window* window, const String& new_name);
private:
/*************************************************************************
Implementation Methods
*************************************************************************/
/*!
\brief
Implementation method to generate a unique name to use for a window.
*/
String generateUniqueWindowName();
/*************************************************************************
Implementation Constants
*************************************************************************/
static const char GUILayoutSchemaName[]; //!< Filename of the XML schema used for validating GUILayout files.
/*************************************************************************
Implementation Data
*************************************************************************/
typedef std::map<String, Window*> WindowRegistry; //!< Type used to implement registry of Window objects
typedef std::vector<Window*> WindowVector; //!< Type to use for a collection of Window pointers.
WindowRegistry d_windowRegistry; //!< The container that forms the Window registry
WindowVector d_deathrow; //!< Collection of 'destroyed' windows.
unsigned long d_uid_counter; //!< Counter used to generate unique window names.
public:
/*************************************************************************
Iterator stuff
*************************************************************************/
typedef ConstBaseIterator<WindowRegistry> WindowIterator;
/*!
\brief
Return a WindowManager::WindowIterator object to iterate over the currently defined Windows.
*/
WindowIterator getIterator(void) const;
};
} // End of CEGUI namespace section
#if defined(_MSC_VER)
# pragma warning(pop)
#endif
#endif // end of guard _CEGUIWindowManager_h_