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/**
* @file llcombobox.h
* @brief LLComboBox base class
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
// A control that displays the name of the chosen item, which when clicked
// shows a scrolling box of choices.
#ifndef LL_LLCOMBOBOX_H
#define LL_LLCOMBOBOX_H
#include "llbutton.h"
#include "lluictrl.h"
#include "llctrlselectioninterface.h"
#include "llrect.h"
#include "llscrolllistctrl.h"
#include "lllineeditor.h"
#include <boost/function.hpp>
// Classes
class LLFontGL;
class LLViewBorder;
class LLComboBox
: public LLUICtrl
, public LLCtrlListInterface
, public ll::ui::SearchableControl
{
public:
typedef enum e_preferred_position
{
ABOVE,
BELOW
} EPreferredPosition;
struct PreferredPositionValues : public LLInitParam::TypeValuesHelper<EPreferredPosition, PreferredPositionValues>
{
static void declareValues();
};
struct ItemParams : public LLInitParam::Block<ItemParams, LLScrollListItem::Params>
{
Optional<std::string> label;
ItemParams();
};
struct Params
: public LLInitParam::Block<Params, LLUICtrl::Params>
{
Optional<bool> allow_text_entry,
show_text_as_tentative,
allow_new_values;
Optional<S32> max_chars;
Optional<commit_callback_t> prearrange_callback,
text_entry_callback,
text_changed_callback;
Optional<EPreferredPosition, PreferredPositionValues> list_position;
// components
Optional<LLButton::Params> combo_button;
Optional<LLScrollListCtrl::Params> combo_list;
Optional<LLLineEditor::Params> combo_editor;
Optional<LLButton::Params> drop_down_button;
Multiple<ItemParams> items;
Params();
};
virtual ~LLComboBox();
/*virtual*/ bool postBuild();
protected:
friend class LLUICtrlFactory;
LLComboBox(const Params&);
void initFromParams(const Params&);
void prearrangeList(std::string filter = "");
virtual std::string _getSearchText() const;
virtual void onSetHighlight() const;
void imageLoaded();
public:
// LLView interface
virtual void onFocusLost();
virtual bool handleToolTip(S32 x, S32 y, MASK mask);
virtual bool handleKeyHere(KEY key, MASK mask);
virtual bool handleUnicodeCharHere(llwchar uni_char);
virtual bool handleScrollWheel(S32 x, S32 y, S32 clicks);
// LLUICtrl interface
virtual void clear(); // select nothing
virtual void onCommit();
virtual bool acceptsTextInput() const { return mAllowTextEntry; }
virtual bool isDirty() const; // Returns true if the user has modified this control.
virtual void resetDirty(); // Clear dirty state
virtual void setFocus(bool b);
// Selects item by underlying LLSD value, using LLSD::asString() matching.
// For simple items, this is just the name of the label.
virtual void setValue(const LLSD& value );
// Gets underlying LLSD value for currently selected items. For simple
// items, this is just the label.
virtual LLSD getValue() const;
void setTextEntry(const LLStringExplicit& text);
void setKeystrokeOnEsc(bool enable);
LLScrollListItem* add(const std::string& name, EAddPosition pos = ADD_BOTTOM, bool enabled = true); // add item "name" to menu
LLScrollListItem* add(const std::string& name, const LLUUID& id, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
LLScrollListItem* add(const std::string& name, void* userdata, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
LLScrollListItem* add(const std::string& name, LLSD value, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
LLScrollListItem* addSeparator(EAddPosition pos = ADD_BOTTOM);
bool remove( S32 index ); // remove item by index, return true if found and removed
void removeall() { clearRows(); }
bool itemExists(const std::string& name);
std::vector<LLScrollListItem*> getAllData() const;
void sortByName(bool ascending = true); // Sort the entries in the combobox by name
// Select current item by name using selectItemByLabel. Returns false if not found.
bool setSimple(const LLStringExplicit& name);
// Get name of current item. Returns an empty string if not found.
const std::string getSimple() const;
// Get contents of column x of selected row
virtual const std::string getSelectedItemLabel(S32 column = 0) const;
// Sets the label, which doesn't have to exist in the label.
// This is probably a UI abuse.
void setLabel(const LLStringExplicit& name);
// Updates the combobox label to match the selected list item.
void updateLabel();
bool remove(const std::string& name); // remove item "name", return true if found and removed
bool setCurrentByIndex(S32 index);
S32 getCurrentIndex() const;
bool selectNextItem();
bool selectPrevItem();
void setEnabledByValue(const LLSD& value, bool enabled);
void createLineEditor(const Params&);
//========================================================================
LLCtrlSelectionInterface* getSelectionInterface() { return (LLCtrlSelectionInterface*)this; };
LLCtrlListInterface* getListInterface() { return (LLCtrlListInterface*)this; };
// LLCtrlListInterface functions
// See llscrolllistctrl.h
virtual S32 getItemCount() const;
// Overwrites the default column (See LLScrollListCtrl for format)
virtual void addColumn(const LLSD& column, EAddPosition pos = ADD_BOTTOM);
virtual void clearColumns();
virtual void setColumnLabel(const std::string& column, const std::string& label);
virtual LLScrollListItem* addElement(const LLSD& value, EAddPosition pos = ADD_BOTTOM, void* userdata = NULL);
virtual LLScrollListItem* addSimpleElement(const std::string& value, EAddPosition pos = ADD_BOTTOM, const LLSD& id = LLSD());
virtual void clearRows();
virtual void sortByColumn(const std::string& name, bool ascending);
// LLCtrlSelectionInterface functions
virtual bool getCanSelect() const { return true; }
virtual bool selectFirstItem() { return setCurrentByIndex(0); }
virtual bool selectNthItem( S32 index ) { return setCurrentByIndex(index); }
virtual bool selectItemRange( S32 first, S32 last );
virtual S32 getFirstSelectedIndex() const { return getCurrentIndex(); }
virtual bool setCurrentByID( const LLUUID& id );
virtual LLUUID getCurrentID() const; // LLUUID::null if no items in menu
virtual bool setSelectedByValue(const LLSD& value, bool selected);
virtual LLSD getSelectedValue();
virtual bool isSelected(const LLSD& value) const;
virtual bool operateOnSelection(EOperation op);
virtual bool operateOnAll(EOperation op);
//========================================================================
void setLeftTextPadding(S32 pad);
void* getCurrentUserdata();
void setPrearrangeCallback( commit_callback_t cb ) { mPrearrangeCallback = cb; }
void setTextEntryCallback( commit_callback_t cb ) { mTextEntryCallback = cb; }
void setTextChangedCallback( commit_callback_t cb ) { mTextChangedCallback = cb; }
/**
* Connects callback to signal called when Return key is pressed.
*/
boost::signals2::connection setReturnCallback( const commit_signal_t::slot_type& cb ) { return mOnReturnSignal.connect(cb); }
void setButtonVisible(bool visible);
void onButtonMouseDown();
void onListMouseUp();
void onItemSelected(const LLSD& data);
void onTextCommit(const LLSD& data);
void updateSelection();
virtual void showList();
virtual void hideList();
virtual void onTextEntry(LLLineEditor* line_editor);
protected:
LLButton* mButton;
LLLineEditor* mTextEntry;
LLScrollListCtrl* mList;
EPreferredPosition mListPosition;
LLPointer<LLUIImage> mArrowImage;
LLUIString mLabel;
bool mHasAutocompletedText;
private:
bool mAllowTextEntry;
bool mAllowNewValues;
S32 mMaxChars;
bool mTextEntryTentative;
commit_callback_t mPrearrangeCallback;
commit_callback_t mTextEntryCallback;
commit_callback_t mTextChangedCallback;
commit_callback_t mSelectionCallback;
boost::signals2::connection mTopLostSignalConnection;
boost::signals2::connection mImageLoadedConnection;
commit_signal_t mOnReturnSignal;
S32 mLastSelectedIndex;
};
// A combo box with icons for the list of items.
class LLIconsComboBox
: public LLComboBox
{
public:
struct Params
: public LLInitParam::Block<Params, LLComboBox::Params>
{
Optional<S32> icon_column,
label_column;
Params();
};
/*virtual*/ const std::string getSelectedItemLabel(S32 column = 0) const;
private:
enum EColumnIndex
{
ICON_COLUMN = 0,
LABEL_COLUMN
};
friend class LLUICtrlFactory;
LLIconsComboBox(const Params&);
virtual ~LLIconsComboBox() {};
S32 mIconColumnIndex;
S32 mLabelColumnIndex;
};
#endif
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