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/**
* @file lluictrl.h
* @author James Cook, Richard Nelson, Tom Yedwab
* @brief Abstract base class for UI controls
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2007, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlife.com/developers/opensource/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLUICTRL_H
#define LL_LLUICTRL_H
#include "llview.h"
#include "llrect.h"
#include "llsd.h"
class LLFocusableElement
{
friend class LLFocusMgr; // allow access to focus change handlers
public:
LLFocusableElement();
virtual ~LLFocusableElement();
virtual void setFocus( BOOL b );
virtual BOOL hasFocus() const;
void setFocusLostCallback(void (*cb)(LLFocusableElement* caller, void*), void* user_data = NULL) { mFocusLostCallback = cb; mFocusCallbackUserData = user_data; }
void setFocusReceivedCallback( void (*cb)(LLFocusableElement*, void*), void* user_data = NULL) { mFocusReceivedCallback = cb; mFocusCallbackUserData = user_data; }
void setFocusChangedCallback( void (*cb)(LLFocusableElement*, void*), void* user_data = NULL ) { mFocusChangedCallback = cb; mFocusCallbackUserData = user_data; }
protected:
virtual void onFocusReceived();
virtual void onFocusLost();
void (*mFocusLostCallback)( LLFocusableElement* caller, void* userdata );
void (*mFocusReceivedCallback)( LLFocusableElement* ctrl, void* userdata );
void (*mFocusChangedCallback)( LLFocusableElement* ctrl, void* userdata );
void* mFocusCallbackUserData;
};
class LLUICtrl
: public LLView, public LLFocusableElement
{
public:
typedef void (*LLUICtrlCallback)(LLUICtrl* ctrl, void* userdata);
typedef BOOL (*LLUICtrlValidate)(LLUICtrl* ctrl, void* userdata);
LLUICtrl();
LLUICtrl( const LLString& name, const LLRect& rect, BOOL mouse_opaque,
LLUICtrlCallback callback,
void* callback_userdata,
U32 reshape=FOLLOWS_NONE);
/*virtual*/ ~LLUICtrl();
// LLView interface
/*virtual*/ void initFromXML(LLXMLNodePtr node, LLView* parent);
/*virtual*/ LLXMLNodePtr getXML(bool save_children = true) const;
/*virtual*/ BOOL setLabelArg( const LLString& key, const LLStringExplicit& text );
/*virtual*/ void onFocusReceived();
/*virtual*/ void onFocusLost();
/*virtual*/ BOOL isCtrl() const;
/*virtual*/ void setTentative(BOOL b);
/*virtual*/ BOOL getTentative() const;
// From LLFocusableElement
/*virtual*/ void setFocus( BOOL b );
/*virtual*/ BOOL hasFocus() const;
// New virtuals
// Return NULL by default (overrride if the class has the appropriate interface)
virtual class LLCtrlSelectionInterface* getSelectionInterface();
virtual class LLCtrlListInterface* getListInterface();
virtual class LLCtrlScrollInterface* getScrollInterface();
virtual LLSD getValue() const;
virtual BOOL setTextArg( const LLString& key, const LLStringExplicit& text );
virtual void setIsChrome(BOOL is_chrome);
virtual BOOL acceptsTextInput() const; // Defaults to false
// A control is dirty if the user has modified its value.
// Editable controls should override this.
virtual BOOL isDirty() const; // Defauls to false
virtual void resetDirty(); //Defaults to no-op
// Call appropriate callbacks
virtual void onLostTop(); // called when registered as top ctrl and user clicks elsewhere
virtual void onCommit();
// Default to no-op:
virtual void onTabInto();
virtual void clear();
virtual void setDoubleClickCallback( void (*cb)(void*) );
virtual void setColor(const LLColor4& color);
virtual void setMinValue(LLSD min_value);
virtual void setMaxValue(LLSD max_value);
BOOL focusNextItem(BOOL text_entry_only);
BOOL focusPrevItem(BOOL text_entry_only);
BOOL focusFirstItem(BOOL prefer_text_fields = FALSE, BOOL focus_flash = TRUE );
BOOL focusLastItem(BOOL prefer_text_fields = FALSE);
// Non Virtuals
BOOL getIsChrome() const;
void setTabStop( BOOL b );
BOOL hasTabStop() const;
// Returns containing panel/floater or NULL if none found.
class LLPanel* getParentPanel() const;
class LLUICtrl* getParentUICtrl() const;
void* getCallbackUserData() const { return mCallbackUserData; }
void setCallbackUserData( void* data ) { mCallbackUserData = data; }
void setCommitCallback( void (*cb)(LLUICtrl*, void*) ) { mCommitCallback = cb; }
void setValidateBeforeCommit( BOOL(*cb)(LLUICtrl*, void*) ) { mValidateCallback = cb; }
void setLostTopCallback( void (*cb)(LLUICtrl*, void*) ) { mLostTopCallback = cb; }
const LLUICtrl* findRootMostFocusRoot() const;
class LLTextInputFilter : public LLQueryFilter, public LLSingleton<LLTextInputFilter>
{
/*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const
{
return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl *>(view)->acceptsTextInput(), TRUE);
}
};
protected:
void (*mCommitCallback)( LLUICtrl* ctrl, void* userdata );
void (*mLostTopCallback)( LLUICtrl* ctrl, void* userdata );
BOOL (*mValidateCallback)( LLUICtrl* ctrl, void* userdata );
void* mCallbackUserData;
private:
BOOL mTabStop;
BOOL mIsChrome;
BOOL mTentative;
class DefaultTabGroupFirstSorter;
};
#endif // LL_LLUICTRL_H
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