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/**
* @file lluictrl.h
* @author James Cook, Richard Nelson, Tom Yedwab
* @brief Abstract base class for UI controls
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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;
* version 2.1 of the License only.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLUICTRL_H
#define LL_LLUICTRL_H
//#include "llboost.h"
#include "llrect.h"
#include "llsd.h"
#include <boost/function.hpp>
#include <boost/signals2.hpp>
#include "llinitparam.h"
#include "llview.h"
#include "llviewmodel.h" // *TODO move dependency to .cpp file
const BOOL TAKE_FOCUS_YES = TRUE;
const BOOL TAKE_FOCUS_NO = FALSE;
class LLUICtrl
: public LLView, public boost::signals2::trackable
{
public:
typedef boost::function<void (LLUICtrl* ctrl, const LLSD& param)> commit_callback_t;
typedef boost::signals2::signal<void (LLUICtrl* ctrl, const LLSD& param)> commit_signal_t;
// *TODO: add xml support for this type of signal in the future
typedef boost::signals2::signal<void (LLUICtrl* ctrl, S32 x, S32 y, MASK mask)> mouse_signal_t;
typedef boost::function<bool (LLUICtrl* ctrl, const LLSD& param)> enable_callback_t;
typedef boost::signals2::signal<bool (LLUICtrl* ctrl, const LLSD& param), boost_boolean_combiner> enable_signal_t;
struct CallbackParam : public LLInitParam::Block<CallbackParam>
{
Ignored name;
Optional<std::string> function_name;
Optional<LLSD> parameter;
Optional<std::string> control_name;
CallbackParam();
};
struct CommitCallbackParam : public LLInitParam::Block<CommitCallbackParam, CallbackParam >
{
Optional<commit_callback_t> function;
};
// also used for visible callbacks
struct EnableCallbackParam : public LLInitParam::Block<EnableCallbackParam, CallbackParam >
{
Optional<enable_callback_t> function;
};
struct EnableControls : public LLInitParam::ChoiceBlock<EnableControls>
{
Alternative<std::string> enabled;
Alternative<std::string> disabled;
EnableControls();
};
struct ControlVisibility : public LLInitParam::ChoiceBlock<ControlVisibility>
{
Alternative<std::string> visible;
Alternative<std::string> invisible;
ControlVisibility();
};
struct Params : public LLInitParam::Block<Params, LLView::Params>
{
Optional<std::string> label;
Optional<bool> tab_stop,
chrome,
requests_front;
Optional<LLSD> initial_value;
Optional<CommitCallbackParam> init_callback,
commit_callback;
Optional<EnableCallbackParam> validate_callback;
Optional<CommitCallbackParam> mouseenter_callback,
mouseleave_callback;
Optional<std::string> control_name;
Optional<EnableControls> enabled_controls;
Optional<ControlVisibility> controls_visibility;
// font params
Optional<const LLFontGL*> font;
Optional<LLFontGL::HAlign> font_halign;
Optional<LLFontGL::VAlign> font_valign;
// cruft from LLXMLNode implementation
Ignored type,
length;
Params();
};
enum ETypeTransparency
{
TT_DEFAULT,
TT_ACTIVE, // focused floater
TT_INACTIVE, // other floaters
TT_FADING, // fading toast
};
/*virtual*/ ~LLUICtrl();
void initFromParams(const Params& p);
protected:
friend class LLUICtrlFactory;
static const Params& getDefaultParams();
LLUICtrl(const Params& p = getDefaultParams(),
const LLViewModelPtr& viewmodel=LLViewModelPtr(new LLViewModel));
commit_signal_t::slot_type initCommitCallback(const CommitCallbackParam& cb);
enable_signal_t::slot_type initEnableCallback(const EnableCallbackParam& cb);
// We need this virtual so we can override it with derived versions
virtual LLViewModel* getViewModel() const;
// We shouldn't ever need to set this directly
//virtual void setViewModel(const LLViewModelPtr&);
virtual BOOL postBuild();
public:
// LLView interface
/*virtual*/ BOOL setLabelArg( const std::string& key, const LLStringExplicit& text );
/*virtual*/ BOOL isCtrl() const;
/*virtual*/ void onMouseEnter(S32 x, S32 y, MASK mask);
/*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
/*virtual*/ BOOL canFocusChildren() const;
/*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
/*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
/*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
/*virtual*/ BOOL handleRightMouseUp(S32 x, S32 y, MASK mask);
/*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
// 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();
bool setControlValue(const LLSD& value);
void setControlVariable(LLControlVariable* control);
virtual void setControlName(const std::string& control, LLView *context = NULL);
LLControlVariable* getControlVariable() { return mControlVariable; }
void setEnabledControlVariable(LLControlVariable* control);
void setDisabledControlVariable(LLControlVariable* control);
void setMakeVisibleControlVariable(LLControlVariable* control);
void setMakeInvisibleControlVariable(LLControlVariable* control);
virtual void setTentative(BOOL b);
virtual BOOL getTentative() const;
virtual void setValue(const LLSD& value);
virtual LLSD getValue() const;
/// When two widgets are displaying the same data (e.g. during a skin
/// change), share their ViewModel.
virtual void shareViewModelFrom(const LLUICtrl& other);
virtual BOOL setTextArg( const std::string& 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 callback
virtual void onCommit();
// Default to no-op:
virtual void onTabInto();
// Clear any user-provided input (text in a text editor, checked checkbox,
// selected radio button, etc.). Defaults to no-op.
virtual void clear();
virtual void setColor(const LLColor4& color);
F32 getCurrentTransparency();
void setTransparencyType(ETypeTransparency type);
ETypeTransparency getTransparencyType() const {return mTransparencyType;}
BOOL focusNextItem(BOOL text_entry_only);
BOOL focusPrevItem(BOOL text_entry_only);
BOOL focusFirstItem(BOOL prefer_text_fields = FALSE, BOOL focus_flash = TRUE );
// Non Virtuals
LLHandle<LLUICtrl> getHandle() const { return getDerivedHandle<LLUICtrl>(); }
BOOL getIsChrome() const;
void setTabStop( BOOL b );
BOOL hasTabStop() const;
LLUICtrl* getParentUICtrl() const;
// return true if help topic found by crawling through parents -
// topic then put in help_topic_out
bool findHelpTopic(std::string& help_topic_out);
boost::signals2::connection setCommitCallback(const CommitCallbackParam& cb);
boost::signals2::connection setValidateCallback(const EnableCallbackParam& cb);
boost::signals2::connection setCommitCallback( const commit_signal_t::slot_type& cb );
boost::signals2::connection setValidateCallback( const enable_signal_t::slot_type& cb );
boost::signals2::connection setMouseEnterCallback( const commit_signal_t::slot_type& cb );
boost::signals2::connection setMouseLeaveCallback( const commit_signal_t::slot_type& cb );
boost::signals2::connection setMouseDownCallback( const mouse_signal_t::slot_type& cb );
boost::signals2::connection setMouseUpCallback( const mouse_signal_t::slot_type& cb );
boost::signals2::connection setRightMouseDownCallback( const mouse_signal_t::slot_type& cb );
boost::signals2::connection setRightMouseUpCallback( const mouse_signal_t::slot_type& cb );
boost::signals2::connection setDoubleClickCallback( const mouse_signal_t::slot_type& cb );
// *TODO: Deprecate; for backwards compatability only:
boost::signals2::connection setCommitCallback( boost::function<void (LLUICtrl*,void*)> cb, void* data);
boost::signals2::connection setValidateBeforeCommit( boost::function<bool (const LLSD& data)> cb );
LLUICtrl* findRootMostFocusRoot();
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);
}
};
template <typename F, typename DERIVED> class CallbackRegistry : public LLRegistrySingleton<std::string, F, DERIVED >
{};
class CommitCallbackRegistry : public CallbackRegistry<commit_callback_t, CommitCallbackRegistry>{};
// the enable callback registry is also used for visiblity callbacks
class EnableCallbackRegistry : public CallbackRegistry<enable_callback_t, EnableCallbackRegistry>{};
protected:
static bool controlListener(const LLSD& newvalue, LLHandle<LLUICtrl> handle, std::string type);
commit_signal_t* mCommitSignal;
enable_signal_t* mValidateSignal;
commit_signal_t* mMouseEnterSignal;
commit_signal_t* mMouseLeaveSignal;
mouse_signal_t* mMouseDownSignal;
mouse_signal_t* mMouseUpSignal;
mouse_signal_t* mRightMouseDownSignal;
mouse_signal_t* mRightMouseUpSignal;
mouse_signal_t* mDoubleClickSignal;
LLViewModelPtr mViewModel;
LLControlVariable* mControlVariable;
boost::signals2::connection mControlConnection;
LLControlVariable* mEnabledControlVariable;
boost::signals2::connection mEnabledControlConnection;
LLControlVariable* mDisabledControlVariable;
boost::signals2::connection mDisabledControlConnection;
LLControlVariable* mMakeVisibleControlVariable;
boost::signals2::connection mMakeVisibleControlConnection;
LLControlVariable* mMakeInvisibleControlVariable;
boost::signals2::connection mMakeInvisibleControlConnection;
static F32 sActiveControlTransparency;
static F32 sInactiveControlTransparency;
virtual void addInfo(LLSD & info);
private:
BOOL mIsChrome;
BOOL mRequestsFront;
BOOL mTabStop;
BOOL mTentative;
ETypeTransparency mTransparencyType;
};
// Build time optimization, generate once in .cpp file
#ifndef LLUICTRL_CPP
extern template class LLUICtrl* LLView::getChild<class LLUICtrl>(
const std::string& name, BOOL recurse) const;
#endif
#endif // LL_LLUICTRL_H
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