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/**
* @file llfolderview.h
* @brief Definition of the folder view collection of classes.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
/**
*
* The folder view collection of classes provides an interface for
* making a 'folder view' similar to the way the a single pane file
* folder interface works.
*
*/
#ifndef LL_LLFOLDERVIEW_H
#define LL_LLFOLDERVIEW_H
#include "llfolderviewitem.h" // because LLFolderView is-a LLFolderViewFolder
#include "lluictrl.h"
#include "v4color.h"
#include "lldepthstack.h"
#include "lleditmenuhandler.h"
#include "llfontgl.h"
#include "llscrollcontainer.h"
class LLFolderViewModelInterface;
class LLFolderViewFolder;
class LLFolderViewItem;
class LLFolderViewFilter;
class LLPanel;
class LLLineEditor;
class LLMenuGL;
class LLUICtrl;
class LLTextBox;
/**
* Class LLFolderViewScrollContainer
*
* A scroll container which provides the information about the height
* of currently displayed folder view contents.
* Used for updating vertical scroll bar visibility in inventory panel.
* See LLScrollContainer::calcVisibleSize().
*/
class LLFolderViewScrollContainer : public LLScrollContainer
{
public:
/*virtual*/ ~LLFolderViewScrollContainer() {};
/*virtual*/ const LLRect getScrolledViewRect() const;
protected:
LLFolderViewScrollContainer(const LLScrollContainer::Params& p);
friend class LLUICtrlFactory;
};
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLFolderView
//
// The LLFolderView represents the root level folder view object.
// It manages the screen region of the folder view.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLFolderView : public LLFolderViewFolder, public LLEditMenuHandler
{
public:
struct Params : public LLInitParam::Block<Params, LLFolderViewFolder::Params>
{
Mandatory<LLPanel*> parent_panel;
Optional<std::string> title;
Optional<bool> use_label_suffix,
allow_multiselect,
show_empty_message,
use_ellipses,
show_item_link_overlays;
Mandatory<LLFolderViewModelInterface*> view_model;
Mandatory<std::string> options_menu;
Params();
};
friend class LLFolderViewScrollContainer;
typedef std::deque<LLFolderViewItem*> selected_items_t;
LLFolderView(const Params&);
virtual ~LLFolderView( void );
virtual BOOL canFocusChildren() const;
virtual const LLFolderView* getRoot() const { return this; }
virtual LLFolderView* getRoot() { return this; }
LLFolderViewModelInterface* getFolderViewModel() { return mViewModel; }
const LLFolderViewModelInterface* getFolderViewModel() const { return mViewModel; }
typedef boost::signals2::signal<void (const std::deque<LLFolderViewItem*>& items, BOOL user_action)> signal_t;
void setSelectCallback(const signal_t::slot_type& cb) { mSelectSignal.connect(cb); }
void setReshapeCallback(const signal_t::slot_type& cb) { mReshapeSignal.connect(cb); }
bool getAllowMultiSelect() { return mAllowMultiSelect; }
// Close all folders in the view
void closeAllFolders();
void openTopLevelFolders();
virtual void addFolder( LLFolderViewFolder* folder);
// Find width and height of this object and its children. Also
// makes sure that this view and its children are the right size.
virtual S32 arrange( S32* width, S32* height );
virtual S32 getItemHeight();
void arrangeAll() { mArrangeGeneration++; }
S32 getArrangeGeneration() { return mArrangeGeneration; }
// applies filters to control visibility of items
virtual void filter( LLFolderViewFilter& filter);
// Get the last selected item
virtual LLFolderViewItem* getCurSelectedItem( void );
selected_items_t& getSelectedItems( void );
// Record the selected item and pass it down the hierarchy.
virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem,
BOOL take_keyboard_focus = TRUE);
// This method is used to toggle the selection of an item. Walks
// children, and keeps track of selected objects.
virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected);
virtual std::set<LLFolderViewItem*> getSelectionList() const;
// Make sure if ancestor is selected, descendants are not
void sanitizeSelection();
virtual void clearSelection();
void addToSelectionList(LLFolderViewItem* item);
void removeFromSelectionList(LLFolderViewItem* item);
bool startDrag();
void setDragAndDropThisFrame() { mDragAndDropThisFrame = TRUE; }
void setDraggingOverItem(LLFolderViewItem* item) { mDraggingOverItem = item; }
LLFolderViewItem* getDraggingOverItem() { return mDraggingOverItem; }
// Deletion functionality
void removeSelectedItems();
void autoOpenItem(LLFolderViewFolder* item);
void closeAutoOpenedFolders();
BOOL autoOpenTest(LLFolderViewFolder* item);
BOOL isOpen() const { return TRUE; } // root folder always open
// Copy & paste
virtual BOOL canCopy() const;
virtual void copy();
virtual BOOL canCut() const;
virtual void cut();
virtual BOOL canPaste() const;
virtual void paste();
LLFolderViewItem* getNextUnselectedItem();
// Public rename functionality - can only start the process
void startRenamingSelectedItem( void );
// LLView functionality
///*virtual*/ BOOL handleKey( KEY key, MASK mask, BOOL called_from_parent );
/*virtual*/ BOOL handleKeyHere( KEY key, MASK mask );
/*virtual*/ BOOL handleUnicodeCharHere(llwchar uni_char);
/*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
/*virtual*/ BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
/*virtual*/ BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
/*virtual*/ BOOL handleHover( S32 x, S32 y, 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);
/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
/*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask) { setShowSelectionContext(FALSE); }
virtual void draw();
virtual void deleteAllChildren();
void scrollToShowSelection();
void scrollToShowItem(LLFolderViewItem* item, const LLRect& constraint_rect);
void setScrollContainer( LLScrollContainer* parent ) { mScrollContainer = parent; }
LLRect getVisibleRect();
BOOL search(LLFolderViewItem* first_item, const std::string &search_string, BOOL backward);
void setShowSelectionContext(bool show) { mShowSelectionContext = show; }
BOOL getShowSelectionContext();
void setShowSingleSelection(bool show);
BOOL getShowSingleSelection() { return mShowSingleSelection; }
F32 getSelectionFadeElapsedTime() { return mMultiSelectionFadeTimer.getElapsedTimeF32(); }
bool getUseEllipses() { return mUseEllipses; }
S32 getSelectedCount() { return (S32)mSelectedItems.size(); }
void update(); // needs to be called periodically (e.g. once per frame)
BOOL needsAutoSelect() { return mNeedsAutoSelect && !mAutoSelectOverride; }
BOOL needsAutoRename() { return mNeedsAutoRename; }
void setNeedsAutoRename(BOOL val) { mNeedsAutoRename = val; }
void setPinningSelectedItem(BOOL val) { mPinningSelectedItem = val; }
void setAutoSelectOverride(BOOL val) { mAutoSelectOverride = val; }
bool showItemLinkOverlays() { return mShowItemLinkOverlays; }
void setCallbackRegistrar(LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* registrar) { mCallbackRegistrar = registrar; }
LLPanel* getParentPanel() { return mParentPanel.get(); }
// DEBUG only
void dumpSelectionInformation();
virtual S32 notify(const LLSD& info) ;
bool useLabelSuffix() { return mUseLabelSuffix; }
virtual void updateMenu();
// Note: We may eventually have to move that method up the hierarchy to LLFolderViewItem.
LLHandle<LLFolderView> getHandle() const { return getDerivedHandle<LLFolderView>(); }
private:
void updateMenuOptions(LLMenuGL* menu);
void updateRenamerPosition();
protected:
LLScrollContainer* mScrollContainer; // NULL if this is not a child of a scroll container.
void commitRename( const LLSD& data );
void onRenamerLost();
void finishRenamingItem( void );
void closeRenamer( void );
bool selectFirstItem();
bool selectLastItem();
BOOL addNoOptions(LLMenuGL* menu) const;
protected:
LLHandle<LLView> mPopupMenuHandle;
selected_items_t mSelectedItems;
bool mKeyboardSelection,
mAllowMultiSelect,
mShowEmptyMessage,
mShowFolderHierarchy,
mNeedsScroll,
mPinningSelectedItem,
mNeedsAutoSelect,
mAutoSelectOverride,
mNeedsAutoRename,
mUseLabelSuffix,
mDragAndDropThisFrame,
mShowItemLinkOverlays,
mShowSelectionContext,
mShowSingleSelection;
// Renaming variables and methods
LLFolderViewItem* mRenameItem; // The item currently being renamed
LLLineEditor* mRenamer;
LLRect mScrollConstraintRect;
LLDepthStack<LLFolderViewFolder> mAutoOpenItems;
LLFolderViewFolder* mAutoOpenCandidate;
LLFrameTimer mAutoOpenTimer;
LLFrameTimer mSearchTimer;
std::string mSearchString;
LLFrameTimer mMultiSelectionFadeTimer;
S32 mArrangeGeneration;
signal_t mSelectSignal;
signal_t mReshapeSignal;
S32 mSignalSelectCallback;
S32 mMinWidth;
LLHandle<LLPanel> mParentPanel;
LLFolderViewModelInterface* mViewModel;
/**
* Is used to determine if we need to cut text In LLFolderViewItem to avoid horizontal scroll.
* NOTE: For now it's used only to cut LLFolderViewItem::mLabel text for Landmarks in Places Panel.
*/
bool mUseEllipses; // See EXT-719
/**
* Contains item under mouse pointer while dragging
*/
LLFolderViewItem* mDraggingOverItem; // See EXT-719
LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* mCallbackRegistrar;
public:
static F32 sAutoOpenTime;
LLTextBox* mStatusTextBox;
};
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLFolderViewFunctor
//
// Simple abstract base class for applying a functor to folders and
// items in a folder view hierarchy. This is suboptimal for algorithms
// that only work folders or only work on items, but I'll worry about
// that later when it's determined to be too slow.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLFolderViewFunctor
{
public:
virtual ~LLFolderViewFunctor() {}
virtual void doFolder(LLFolderViewFolder* folder) = 0;
virtual void doItem(LLFolderViewItem* item) = 0;
};
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLSelectFirstFilteredItem
//
// This will select the first *item* found in the hierarchy. If no item can be
// selected, the first matching folder will.
// Since doFolder() is done first but we prioritize item selection, we let the
// first filtered folder set the selection and raise a folder flag.
// The selection might be overridden by the first filtered item in doItem()
// which checks an item flag. Since doFolder() checks the item flag too, the first
// item will still be selected if items were to be done first and folders second.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLSelectFirstFilteredItem : public LLFolderViewFunctor
{
public:
LLSelectFirstFilteredItem() : mItemSelected(FALSE), mFolderSelected(FALSE) {}
virtual ~LLSelectFirstFilteredItem() {}
virtual void doFolder(LLFolderViewFolder* folder);
virtual void doItem(LLFolderViewItem* item);
BOOL wasItemSelected() { return mItemSelected || mFolderSelected; }
protected:
BOOL mItemSelected;
BOOL mFolderSelected;
};
class LLOpenFilteredFolders : public LLFolderViewFunctor
{
public:
LLOpenFilteredFolders() {}
virtual ~LLOpenFilteredFolders() {}
virtual void doFolder(LLFolderViewFolder* folder);
virtual void doItem(LLFolderViewItem* item);
};
class LLSaveFolderState : public LLFolderViewFunctor
{
public:
LLSaveFolderState() : mApply(FALSE) {}
virtual ~LLSaveFolderState() {}
virtual void doFolder(LLFolderViewFolder* folder);
virtual void doItem(LLFolderViewItem* item) {}
void setApply(BOOL apply);
void clearOpenFolders() { mOpenFolders.clear(); }
protected:
std::set<LLUUID> mOpenFolders;
BOOL mApply;
};
class LLOpenFoldersWithSelection : public LLFolderViewFunctor
{
public:
LLOpenFoldersWithSelection() {}
virtual ~LLOpenFoldersWithSelection() {}
virtual void doFolder(LLFolderViewFolder* folder);
virtual void doItem(LLFolderViewItem* item);
};
// Flags for buildContextMenu()
const U32 SUPPRESS_OPEN_ITEM = 0x1;
const U32 FIRST_SELECTED_ITEM = 0x2;
const U32 ITEM_IN_MULTI_SELECTION = 0x4;
#endif // LL_LLFOLDERVIEW_H
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