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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) 2001-2008, 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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"
//
// Classes
//
class LLFontGL;
class LLButton;
class LLTextBox;
class LLLineEditor;
class LLUICtrl;
class LLPanel;
class LLCtrlSelectionInterface;
class LLCtrlListInterface;
class LLCtrlScrollInterface;
typedef void (*LLUICtrlCallback)(LLUICtrl* ctrl, void* userdata);
typedef BOOL (*LLUICtrlValidate)(LLUICtrl* ctrl, void* userdata);
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:
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 BOOL handleToolTip(S32 x, S32 y, LLString& msg, LLRect* sticky_rect);
virtual void initFromXML(LLXMLNodePtr node, LLView* parent);
virtual LLXMLNodePtr getXML(bool save_children = true) const;
virtual LLSD getValue() const { return LLSD(); }
// Defaults to no-op
virtual BOOL setTextArg( const LLString& key, const LLStringExplicit& text );
// Defaults to no-op
virtual BOOL setLabelArg( const LLString& key, const LLStringExplicit& text );
// Defaults to return NULL
virtual LLCtrlSelectionInterface* getSelectionInterface();
virtual LLCtrlListInterface* getListInterface();
virtual LLCtrlScrollInterface* getScrollInterface();
virtual void setFocus( BOOL b );
virtual BOOL hasFocus() const;
virtual void onFocusReceived();
virtual void onFocusLost();
virtual void onLostTop(); // called when registered as top ctrl and user clicks elsewhere
virtual void setTabStop( BOOL b );
virtual BOOL hasTabStop() const;
// Defaults to false
virtual BOOL acceptsTextInput() const;
// Default to no-op
virtual void onTabInto();
virtual void clear();
virtual void setIsChrome(BOOL is_chrome);
virtual BOOL getIsChrome() const;
virtual void onCommit();
virtual BOOL isCtrl() const { return TRUE; }
// "Tentative" controls have a proposed value, but haven't committed
// it yet. This is used when multiple objects are selected and we
// want to display a parameter that differs between the objects.
virtual void setTentative(BOOL b);
virtual BOOL getTentative() const;
// Returns containing panel/floater or NULL if none found.
LLPanel* getParentPanel() 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; }
// Defaults to no-op!
virtual void setDoubleClickCallback( void (*cb)(void*) );
// Defaults to no-op
virtual void setColor(const LLColor4& color);
// Defaults to no-op
virtual void setMinValue(LLSD min_value);
virtual void setMaxValue(LLSD max_value);
/*virtual*/ BOOL focusFirstItem(BOOL prefer_text_fields = FALSE );
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);
}
};
// Returns TRUE if the user has modified this control. Editable controls should override this.
virtual BOOL isDirty() const { return FALSE; };
// Clear the dirty state
virtual void resetDirty() {};
protected:
void (*mCommitCallback)( LLUICtrl* ctrl, void* userdata );
void (*mLostTopCallback)( LLUICtrl* ctrl, void* userdata );
BOOL (*mValidateCallback)( LLUICtrl* ctrl, void* userdata );
void* mCallbackUserData;
BOOL mTentative;
BOOL mTabStop;
private:
BOOL mIsChrome;
};
#endif // LL_LLUICTRL_H
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