/** * @file llfolderviewitem.h * @brief Items and folders that can appear in a hierarchical folder view * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * 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 LLFOLDERVIEWITEM_H #define LLFOLDERVIEWITEM_H #include "llview.h" #include "lldarray.h" // *TODO: Eliminate, forward declare #include "lluiimage.h" class LLFontGL; class LLFolderView; class LLFolderViewEventListener; class LLFolderViewFolder; class LLFolderViewFunctor; class LLFolderViewItem; class LLFolderViewListenerFunctor; class LLInventoryFilter; class LLMenuGL; class LLUIImage; class LLViewerInventoryItem; // These are grouping of inventory types. // Order matters when sorting system folders to the top. enum EInventorySortGroup { SG_SYSTEM_FOLDER, SG_TRASH_FOLDER, SG_NORMAL_FOLDER, SG_ITEM }; // *TODO: do we really need one sort object per folder? // can we just have one of these per LLFolderView ? class LLInventorySort { public: LLInventorySort() : mSortOrder(0), mByDate(false), mSystemToTop(false), mFoldersByName(false) { } // Returns true if order has changed bool updateSort(U32 order); U32 getSort() { return mSortOrder; } bool isByDate() { return mByDate; } bool operator()(const LLFolderViewItem* const& a, const LLFolderViewItem* const& b); private: U32 mSortOrder; bool mByDate; bool mSystemToTop; bool mFoldersByName; }; //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Class LLFolderViewItem // // An instance of this class represents a single item in a folder view // such as an inventory item or a file. //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ class LLFolderViewItem : public LLView { public: static void initClass(); static void cleanupClass(); struct Params : public LLInitParam::Block<Params, LLView::Params> { Optional<LLUIImage*> icon; Optional<LLUIImage*> icon_open; // used for folders Optional<LLUIImage*> icon_overlay; // for links Optional<LLFolderView*> root; Mandatory<LLFolderViewEventListener*> listener; Optional<LLUIImage*> folder_arrow_image; Optional<S32> folder_indentation; // pixels Optional<LLUIImage*> selection_image; Optional<S32> item_height; // pixels Optional<S32> item_top_pad; // pixels Optional<S32> creation_date; //UTC seconds Params(); }; // layout constants static const S32 LEFT_PAD = 5; // LEFT_INDENTATION is set via folder_indentation above static const S32 ICON_PAD = 2; static const S32 ICON_WIDTH = 16; static const S32 TEXT_PAD = 1; static const S32 TEXT_PAD_RIGHT = 4; static const S32 ARROW_SIZE = 12; static const S32 MAX_FOLDER_ITEM_OVERLAP = 2; // animation parameters static const F32 FOLDER_CLOSE_TIME_CONSTANT; static const F32 FOLDER_OPEN_TIME_CONSTANT; // Mostly for debugging printout purposes. const std::string& getSearchableLabel() { return mSearchableLabel; } BOOL isLoading() const { return mIsLoading; } private: BOOL mIsSelected; protected: friend class LLUICtrlFactory; friend class LLFolderViewEventListener; LLFolderViewItem(const Params& p); std::string mLabel; std::string mSearchableLabel; S32 mLabelWidth; bool mLabelWidthDirty; time_t mCreationDate; LLFolderViewFolder* mParentFolder; LLFolderViewEventListener* mListener; BOOL mIsCurSelection; BOOL mSelectPending; LLFontGL::StyleFlags mLabelStyle; std::string mLabelSuffix; LLUIImagePtr mIcon; std::string mStatusText; LLUIImagePtr mIconOpen; LLUIImagePtr mIconOverlay; BOOL mHasVisibleChildren; S32 mIndentation; S32 mItemHeight; BOOL mPassedFilter; S32 mLastFilterGeneration; std::string::size_type mStringMatchOffset; F32 mControlLabelRotation; LLFolderView* mRoot; BOOL mDragAndDropTarget; BOOL mIsLoading; LLTimer mTimeSinceRequestStart; bool mShowLoadStatus; bool mIsMouseOverTitle; // helper function to change the selection from the root. void changeSelectionFromRoot(LLFolderViewItem* selection, BOOL selected); // this is an internal method used for adding items to folders. A // no-op at this level, but reimplemented in derived classes. virtual BOOL addItem(LLFolderViewItem*) { return FALSE; } virtual BOOL addFolder(LLFolderViewFolder*) { return FALSE; } static LLFontGL* getLabelFontForStyle(U8 style); virtual void setCreationDate(time_t creation_date_utc) { mCreationDate = creation_date_utc; } public: BOOL postBuild(); // This function clears the currently selected item, and records // the specified selected item appropriately for display and use // in the UI. If open is TRUE, then folders are opened up along // the way to the selection. void setSelectionFromRoot(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus = TRUE); // This function is called when the folder view is dirty. It's // implemented here but called by derived classes when folding the // views. void arrangeFromRoot(); void filterFromRoot( void ); void arrangeAndSet(BOOL set_selection, BOOL take_keyboard_focus); virtual ~LLFolderViewItem( void ); // addToFolder() returns TRUE if it succeeds. FALSE otherwise enum { ARRANGE = TRUE, DO_NOT_ARRANGE = FALSE }; virtual BOOL addToFolder(LLFolderViewFolder* folder, LLFolderView* root); virtual EInventorySortGroup getSortGroup() const; // Finds width and height of this object and it's children. Also // makes sure that this view and it's children are the right size. virtual S32 arrange( S32* width, S32* height, S32 filter_generation ); virtual S32 getItemHeight(); // applies filters to control visibility of inventory items virtual void filter( LLInventoryFilter& filter); // updates filter serial number and optionally propagated value up to root S32 getLastFilterGeneration() { return mLastFilterGeneration; } virtual void dirtyFilter(); // If 'selection' is 'this' then note that otherwise ignore. // Returns TRUE if this item ends up being selected. virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus); // This method is used to set the selection state of an item. // If 'selection' is 'this' then note selection. // Returns TRUE if the selection state of this item was changed. virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected); // this method is used to deselect this element void deselectItem(); // this method is used to select this element virtual void selectItem(); // gets multiple-element selection virtual std::set<LLUUID> getSelectionList() const; // Returns true is this object and all of its children can be removed (deleted by user) virtual BOOL isRemovable(); // Returns true is this object and all of its children can be moved virtual BOOL isMovable(); // destroys this item recursively virtual void destroyView(); BOOL isSelected() const { return mIsSelected; } void setUnselected() { mIsSelected = FALSE; } void setIsCurSelection(BOOL select) { mIsCurSelection = select; } BOOL getIsCurSelection() { return mIsCurSelection; } BOOL hasVisibleChildren() { return mHasVisibleChildren; } void setShowLoadStatus(bool status) { mShowLoadStatus = status; } // Call through to the viewed object and return true if it can be // removed. Returns true if it's removed. //virtual BOOL removeRecursively(BOOL single_item); BOOL remove(); // Build an appropriate context menu for the item. Flags unused. void buildContextMenu(LLMenuGL& menu, U32 flags); // This method returns the actual name of the thing being // viewed. This method will ask the viewed object itself. const std::string& getName( void ) const; const std::string& getSearchableLabel( void ) const; // This method returns the label displayed on the view. This // method was primarily added to allow sorting on the folder // contents possible before the entire view has been constructed. const std::string& getLabel() const { return mLabel; } // Used for sorting, like getLabel() above. virtual time_t getCreationDate() const { return mCreationDate; } LLFolderViewFolder* getParentFolder( void ) { return mParentFolder; } const LLFolderViewFolder* getParentFolder( void ) const { return mParentFolder; } LLFolderViewItem* getNextOpenNode( BOOL include_children = TRUE ); LLFolderViewItem* getPreviousOpenNode( BOOL include_children = TRUE ); const LLFolderViewEventListener* getListener( void ) const { return mListener; } LLFolderViewEventListener* getListener( void ) { return mListener; } // Gets the inventory item if it exists (null otherwise) LLViewerInventoryItem * getInventoryItem(void); // just rename the object. void rename(const std::string& new_name); // open virtual void openItem( void ); virtual void preview(void); // Show children (unfortunate that this is called "open") virtual void setOpen(BOOL open = TRUE) {}; virtual BOOL isOpen() const { return FALSE; } virtual LLFolderView* getRoot(); BOOL isDescendantOf( const LLFolderViewFolder* potential_ancestor ); S32 getIndentation() { return mIndentation; } virtual BOOL potentiallyVisible(); // do we know for a fact that this item has been filtered out? virtual BOOL getFiltered(); virtual BOOL getFiltered(S32 filter_generation); virtual void setFiltered(BOOL filtered, S32 filter_generation); // change the icon void setIcon(LLUIImagePtr icon); // refresh information from the object being viewed. void refreshFromListener(); virtual void refresh(); virtual void applyListenerFunctorRecursively(LLFolderViewListenerFunctor& functor); // LLView functionality virtual BOOL handleRightMouseDown( S32 x, S32 y, MASK mask ); virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask ); virtual BOOL handleHover( S32 x, S32 y, MASK mask ); virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask ); virtual BOOL handleDoubleClick( S32 x, S32 y, MASK mask ); virtual void onMouseLeave(S32 x, S32 y, MASK mask); virtual LLView* findChildView(const std::string& name, BOOL recurse) const { return NULL; } // virtual void handleDropped(); virtual void draw(); virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg); private: static std::map<U8, LLFontGL*> sFonts; // map of styles to fonts }; // function used for sorting. typedef bool (*sort_order_f)(LLFolderViewItem* a, LLFolderViewItem* b); //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Class LLFolderViewFolder // // An instance of an LLFolderViewFolder represents a collection of // more folders and items. This is used to build the hierarchy of // items found in the folder view. //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ class LLFolderViewFolder : public LLFolderViewItem { protected: LLFolderViewFolder( const LLFolderViewItem::Params& ); friend class LLUICtrlFactory; public: typedef enum e_trash { UNKNOWN, TRASH, NOT_TRASH } ETrash; typedef std::list<LLFolderViewItem*> items_t; typedef std::list<LLFolderViewFolder*> folders_t; protected: items_t mItems; folders_t mFolders; LLInventorySort mSortFunction; BOOL mIsOpen; BOOL mExpanderHighlighted; F32 mCurHeight; F32 mTargetHeight; F32 mAutoOpenCountdown; time_t mSubtreeCreationDate; mutable ETrash mAmTrash; S32 mLastArrangeGeneration; S32 mLastCalculatedWidth; S32 mCompletedFilterGeneration; S32 mMostFilteredDescendantGeneration; bool mNeedsSort; bool mPassedFolderFilter; public: typedef enum e_recurse_type { RECURSE_NO, RECURSE_UP, RECURSE_DOWN, RECURSE_UP_DOWN } ERecurseType; virtual ~LLFolderViewFolder( void ); virtual BOOL potentiallyVisible(); LLFolderViewItem* getNextFromChild( LLFolderViewItem*, BOOL include_children = TRUE ); LLFolderViewItem* getPreviousFromChild( LLFolderViewItem*, BOOL include_children = TRUE ); // addToFolder() returns TRUE if it succeeds. FALSE otherwise virtual BOOL addToFolder(LLFolderViewFolder* folder, LLFolderView* root); // Finds width and height of this object and it's children. Also // makes sure that this view and it's children are the right size. virtual S32 arrange( S32* width, S32* height, S32 filter_generation ); BOOL needsArrange(); void requestSort(); // Returns the sort group (system, trash, folder) for this folder. virtual EInventorySortGroup getSortGroup() const; virtual void setCompletedFilterGeneration(S32 generation, BOOL recurse_up); virtual S32 getCompletedFilterGeneration() { return mCompletedFilterGeneration; } BOOL hasFilteredDescendants(S32 filter_generation); BOOL hasFilteredDescendants(); // applies filters to control visibility of inventory items virtual void filter( LLInventoryFilter& filter); virtual void setFiltered(BOOL filtered, S32 filter_generation); virtual BOOL getFiltered(); virtual BOOL getFiltered(S32 filter_generation); virtual void dirtyFilter(); // folder-specific filtering (filter status propagates top down instead of bottom up) void filterFolder(LLInventoryFilter& filter); void setFilteredFolder(bool filtered, S32 filter_generation); bool getFilteredFolder(S32 filter_generation); // Passes selection information on to children and record // selection information if necessary. // Returns TRUE if this object (or a child) ends up being selected. // If 'openitem' is TRUE then folders are opened up along the way to the selection. virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus); // This method is used to change the selection of an item. // Recursively traverse all children; if 'selection' is 'this' then change // the select status if necessary. // Returns TRUE if the selection state of this folder, or of a child, was changed. virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected); // this method is used to group select items void extendSelectionTo(LLFolderViewItem* selection); // Returns true is this object and all of its children can be removed. virtual BOOL isRemovable(); // Returns true is this object and all of its children can be moved virtual BOOL isMovable(); // destroys this folder, and all children virtual void destroyView(); // If this folder can be removed, remove all children that can be // removed, return TRUE if this is empty after the operation and // it's viewed folder object can be removed. //virtual BOOL removeRecursively(BOOL single_item); //virtual BOOL remove(); // remove the specified item (and any children) if // possible. Return TRUE if the item was deleted. BOOL removeItem(LLFolderViewItem* item); // simply remove the view (and any children) Don't bother telling // the listeners. void removeView(LLFolderViewItem* item); // extractItem() removes the specified item from the folder, but // doesn't delete it. void extractItem( LLFolderViewItem* item ); // This function is called by a child that needs to be resorted. void resort(LLFolderViewItem* item); void setItemSortOrder(U32 ordering); void sortBy(U32); //BOOL (*func)(LLFolderViewItem* a, LLFolderViewItem* b)); void setAutoOpenCountdown(F32 countdown) { mAutoOpenCountdown = countdown; } // folders can be opened. This will usually be called by internal // methods. virtual void toggleOpen(); // Force a folder open or closed virtual void setOpen(BOOL openitem = TRUE); // Called when a child is refreshed. // don't rearrange child folder contents unless explicitly requested virtual void requestArrange(BOOL include_descendants = FALSE); // internal method which doesn't update the entire view. This // method was written because the list iterators destroy the state // of other iterations, thus, we can't arrange while iterating // through the children (such as when setting which is selected. virtual void setOpenArrangeRecursively(BOOL openitem, ERecurseType recurse = RECURSE_NO); // Get the current state of the folder. virtual BOOL isOpen() const { return mIsOpen; } // special case if an object is dropped on the child. BOOL handleDragAndDropFromChild(MASK mask, BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg); void applyFunctorRecursively(LLFolderViewFunctor& functor); virtual void applyListenerFunctorRecursively(LLFolderViewListenerFunctor& functor); // Just apply this functor to the folder's immediate children. void applyFunctorToChildren(LLFolderViewFunctor& functor); virtual void openItem( void ); virtual BOOL addItem(LLFolderViewItem* item); virtual BOOL addFolder( LLFolderViewFolder* folder); // LLView functionality virtual BOOL handleHover(S32 x, S32 y, MASK mask); virtual BOOL handleRightMouseDown( S32 x, S32 y, MASK mask ); virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask ); virtual BOOL handleDoubleClick( 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); BOOL handleDragAndDropToThisFolder(MASK mask, BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg); virtual void draw(); time_t getCreationDate() const; bool isTrash() const; folders_t::const_iterator getFoldersBegin() const { return mFolders.begin(); } folders_t::const_iterator getFoldersEnd() const { return mFolders.end(); } folders_t::size_type getFoldersCount() const { return mFolders.size(); } items_t::const_iterator getItemsBegin() const { return mItems.begin(); } items_t::const_iterator getItemsEnd() const { return mItems.end(); } items_t::size_type getItemsCount() const { return mItems.size(); } LLFolderViewFolder* getCommonAncestor(LLFolderViewItem* item_a, LLFolderViewItem* item_b, bool& reverse); void gatherChildRangeExclusive(LLFolderViewItem* start, LLFolderViewItem* end, bool reverse, std::vector<LLFolderViewItem*>& items); }; //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Class LLFolderViewListenerFunctor // // This simple abstract base class can be used to applied to all // listeners in a hierarchy. //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ class LLFolderViewListenerFunctor { public: virtual ~LLFolderViewListenerFunctor() {} virtual void operator()(LLFolderViewEventListener* listener) = 0; }; #endif // LLFOLDERVIEWITEM_H