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/**
* @file LLAccordionCtrl.h
* @brief Accordion Panel implementation
*
* $LicenseInfo:firstyear=2004&license=viewerlgpl$
* 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_ACCORDIONCTRL_H
#define LL_ACCORDIONCTRL_H
#include "llpanel.h"
#include "lltextbox.h"
#include "llscrollbar.h"
#include <vector>
#include <algorithm>
#include <string>
class LLAccordionCtrlTab;
class LLAccordionCtrl: public LLPanel
{
private:
std::vector<LLAccordionCtrlTab*> mAccordionTabs;
void ctrlSetLeftTopAndSize(LLView* panel, S32 left, S32 top, S32 width, S32 height);
void ctrlShiftVertical(LLView* panel,S32 delta);
void onCollapseCtrlCloseOpen(S16 panel_num);
void shiftAccordionTabs(S16 panel_num, S32 delta);
public:
/**
* Abstract comparator for accordion tabs.
*/
class LLTabComparator
{
public:
LLTabComparator() = default;
virtual ~LLTabComparator() = default;
/** Returns true if tab1 < tab2, false otherwise */
virtual bool compare(const LLAccordionCtrlTab* tab1, const LLAccordionCtrlTab* tab2) const = 0;
};
struct Params
: public LLInitParam::Block<Params, LLPanel::Params>
{
Optional<bool> single_expansion,
fit_parent; /* Accordion will fit its parent size, controls that are placed into
accordion tabs are responsible for scrolling their content.
*NOTE fit_parent works best when combined with single_expansion.
Accordion view should implement getRequiredRect() and provide valid height*/
Optional<LLTextBox::Params> no_matched_tabs_text;
Optional<LLTextBox::Params> no_visible_tabs_text;
Params()
: single_expansion("single_expansion",false)
, fit_parent("fit_parent", false)
, no_matched_tabs_text("no_matched_tabs_text")
, no_visible_tabs_text("no_visible_tabs_text")
{};
};
LLAccordionCtrl(const Params& params);
LLAccordionCtrl();
virtual ~LLAccordionCtrl();
virtual bool postBuild();
virtual bool handleRightMouseDown ( S32 x, S32 y, MASK mask);
virtual bool handleScrollWheel ( S32 x, S32 y, S32 clicks );
virtual bool handleKeyHere (KEY key, MASK mask);
virtual bool handleDragAndDrop (S32 x, S32 y, MASK mask, bool drop,
EDragAndDropType cargo_type,
void* cargo_data,
EAcceptance* accept,
std::string& tooltip_msg);
//
// Call reshape after changing splitter's size
virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
void addCollapsibleCtrl(LLAccordionCtrlTab* accordion_tab);
void removeCollapsibleCtrl(LLAccordionCtrlTab* accordion_tab);
void arrange();
void draw();
void onScrollPosChangeCallback(S32, LLScrollbar*);
virtual void onUpdateScrollToChild(const LLUICtrl * cntrl);
void onOpen (const LLSD& key);
S32 notifyParent(const LLSD& info);
void reset ();
void expandDefaultTab();
void setComparator(const LLTabComparator* comp) { mTabComparator = comp; }
void sort();
void collapseAllTabs();
/**
* Sets filter substring as a search_term for help text when there are no any visible tabs.
*/
void setFilterSubString(const std::string& filter_string);
/**
* This method returns the first expanded accordion tab.
* It is expected to be called for accordion which doesn't allow multiple
* tabs to be expanded. Use with care.
*/
const LLAccordionCtrlTab* getExpandedTab() const;
LLAccordionCtrlTab* getSelectedTab() const { return mSelectedTab; }
bool getFitParent() const {return mFitParent;}
void setSkipScrollToChild(bool skip) { mSkipScrollToChild = skip; }
private:
void initNoTabsWidget(const LLTextBox::Params& tb_params);
void updateNoTabsHelpTextVisibility();
void arrangeSingle();
void arrangeMultiple();
// Calc Splitter's height that is necessary to display all child content
S32 calcRecuiredHeight();
S32 getRecuiredHeight() const { return mInnerRect.getHeight(); }
S32 calcExpandedTabHeight(S32 tab_index = 0, S32 available_height = 0);
void updateLayout (S32 width, S32 height);
void show_hide_scrollbar (S32 width, S32 height);
void showScrollbar (S32 width, S32 height);
void hideScrollbar (S32 width, S32 height);
bool autoScroll (S32 x, S32 y);
/**
* An adaptor for LLTabComparator
*/
struct LLComparatorAdaptor
{
LLComparatorAdaptor(const LLTabComparator& comparator) : mComparator(comparator) {};
bool operator()(const LLAccordionCtrlTab* tab1, const LLAccordionCtrlTab* tab2)
{
return mComparator.compare(tab1, tab2);
}
const LLTabComparator& mComparator;
};
private:
LLRect mInnerRect;
LLScrollbar* mScrollbar = nullptr;
bool mSingleExpansion = false;
bool mFitParent = false;
bool mAutoScrolling = false;
F32 mAutoScrollRate = 0.f;
LLTextBox* mNoVisibleTabsHelpText = nullptr;
bool mSkipScrollToChild = false;
std::string mNoMatchedTabsOrigString;
std::string mNoVisibleTabsOrigString;
LLAccordionCtrlTab* mSelectedTab = nullptr;
const LLTabComparator* mTabComparator = nullptr;
};
#endif // LL_LLSPLITTER_H
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