a2a6a329e8
* removed weird stuff that seemed to have no purpose in life * added more comments where I had to figure things out * fWidth is now adjusted in FrameResized() * ListView scrolls up when items are removed at the end and there would be empty room * fixed SwapItems(), MoveItem() and ReplaceItem() by making DoMiscellaneous() use the private implementations instead of calling the public ones again resulting in an endless loop * renamed private methods with underscore * removed more unused/empty private methods * some slight performance increases here and there * more correct tracking of fFirstSelected and fLastSelected, at least I cannot reproduce one crash in the WonderBrush Layer list anymore even more cleanup and testing would not hurt though... git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17487 a95241bf-73f2-0310-859d-f6bbb57e9c96
201 lines
6.2 KiB
C++
201 lines
6.2 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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// Distributed under the terms of the OpenBeOS license
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//
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// File: ListView.h
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// Author: Axel Doerfler
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// Description: BListView represents a one-dimensional list view.
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//
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//------------------------------------------------------------------------------
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#ifndef _LIST_VIEW_H
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#define _LIST_VIEW_H
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#include <Invoker.h>
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#include <View.h>
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#include <List.h>
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#include <ListItem.h>
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struct track_data;
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enum list_view_type {
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B_SINGLE_SELECTION_LIST,
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B_MULTIPLE_SELECTION_LIST
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};
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#ifdef USE_OPENBEOS_NAMESPACE
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namespace OpenBeOS {
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#endif
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//----- BListView class ------------------------------------------
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class BListView : public BView, public BInvoker
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{
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public:
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BListView(BRect frame, const char *name,
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list_view_type type = B_SINGLE_SELECTION_LIST,
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uint32 resizeMask = B_FOLLOW_LEFT | B_FOLLOW_TOP,
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uint32 flags = B_WILL_DRAW | B_FRAME_EVENTS | B_NAVIGABLE);
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BListView(BMessage *data);
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virtual ~BListView() ;
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static BArchivable *Instantiate(BMessage *data);
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virtual status_t Archive(BMessage *data, bool deep = true) const;
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virtual void Draw(BRect updateRect);
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virtual void MessageReceived(BMessage *msg);
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virtual void MouseDown(BPoint where);
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virtual void KeyDown(const char *bytes, int32 numBytes);
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virtual void MakeFocus(bool state = true);
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virtual void FrameResized(float newWidth, float newHeight);
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virtual void TargetedByScrollView(BScrollView *scroller);
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void ScrollTo(float x, float y);
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virtual void ScrollTo(BPoint where);
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virtual bool AddItem(BListItem *item);
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virtual bool AddItem(BListItem *item, int32 atIndex);
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virtual bool AddList(BList *newItems);
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virtual bool AddList(BList *newItems, int32 atIndex);
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virtual bool RemoveItem(BListItem *item);
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virtual BListItem *RemoveItem(int32 index);
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virtual bool RemoveItems(int32 index, int32 count);
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virtual void SetSelectionMessage(BMessage *message);
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virtual void SetInvocationMessage(BMessage *message);
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BMessage *SelectionMessage() const;
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uint32 SelectionCommand() const;
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BMessage *InvocationMessage() const;
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uint32 InvocationCommand() const;
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virtual void SetListType(list_view_type type);
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list_view_type ListType() const;
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BListItem *ItemAt(int32 index) const;
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int32 IndexOf(BPoint point) const;
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int32 IndexOf(BListItem *item) const;
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BListItem *FirstItem() const;
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BListItem *LastItem() const;
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bool HasItem(BListItem *item) const;
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int32 CountItems() const;
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virtual void MakeEmpty();
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bool IsEmpty() const;
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void DoForEach(bool (*func)(BListItem *));
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void DoForEach(bool (*func)(BListItem *, void *), void *);
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const BListItem **Items() const;
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void InvalidateItem(int32 index);
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void ScrollToSelection();
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void Select(int32 index, bool extend = false);
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void Select(int32 from, int32 to, bool extend = false);
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bool IsItemSelected(int32 index) const;
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int32 CurrentSelection(int32 index = 0) const;
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virtual status_t Invoke(BMessage *msg = NULL);
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void DeselectAll();
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void DeselectExcept(int32 except_from, int32 except_to);
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void Deselect(int32 index);
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virtual void SelectionChanged();
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void SortItems(int (*cmp)(const void *, const void *));
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/* These functions bottleneck through DoMiscellaneous() */
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bool SwapItems(int32 a, int32 b);
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bool MoveItem(int32 from, int32 to);
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bool ReplaceItem(int32 index, BListItem *item);
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virtual void AttachedToWindow();
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virtual void FrameMoved(BPoint new_position);
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BRect ItemFrame(int32 index);
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virtual BHandler *ResolveSpecifier(BMessage *msg, int32 index,
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BMessage *specifier, int32 form, const char *property);
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virtual status_t GetSupportedSuites(BMessage *data);
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virtual status_t Perform(perform_code code, void *arg);
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virtual void WindowActivated(bool state);
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virtual void MouseUp(BPoint point);
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virtual void MouseMoved(BPoint point, uint32 code, const BMessage *msg);
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virtual void DetachedFromWindow();
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virtual bool InitiateDrag(BPoint point, int32 itemIndex, bool initialySelected);
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virtual void ResizeToPreferred();
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virtual void GetPreferredSize(float *width, float *height);
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virtual void AllAttached();
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virtual void AllDetached();
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protected:
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enum MiscCode { B_NO_OP, B_REPLACE_OP, B_MOVE_OP, B_SWAP_OP };
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union MiscData {
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struct Spare { int32 data[5]; };
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struct Replace { int32 index; BListItem *item; } replace;
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struct Move { int32 from; int32 to; } move;
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struct Swap { int32 a; int32 b; } swap;
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};
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virtual bool DoMiscellaneous(MiscCode code, MiscData *data);
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//----- Private or reserved -----------------------------------------
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private:
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friend class BOutlineListView;
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virtual void _ReservedListView2();
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virtual void _ReservedListView3();
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virtual void _ReservedListView4();
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BListView &operator=(const BListView &);
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void _InitObject(list_view_type type);
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void _FixupScrollBar();
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void _InvalidateFrom(int32 index);
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status_t _PostMessage(BMessage *msg);
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void _FontChanged();
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int32 _RangeCheck(int32 index);
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bool _Select(int32 index, bool extend);
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bool _Select(int32 from, int32 to, bool extend);
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bool _Deselect(int32 index);
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// void _Deselect(int32 from, int32 to);
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bool _DeselectAll(int32 except_from, int32 except_to);
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// void PerformDelayedSelect();
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bool _TryInitiateDrag(BPoint where);
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int32 _CalcFirstSelected(int32 after);
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int32 _CalcLastSelected(int32 before);
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virtual void DrawItem(BListItem *item, BRect itemRect, bool complete = false);
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bool _SwapItems(int32 a, int32 b);
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bool _MoveItem(int32 from, int32 to);
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bool _ReplaceItem(int32 index, BListItem *item);
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void _RescanSelection(int32 from, int32 to);
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BList fList;
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list_view_type fListType;
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int32 fFirstSelected;
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int32 fLastSelected;
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int32 fAnchorIndex;
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float fWidth;
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BMessage* fSelectMessage;
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BScrollView* fScrollView;
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track_data* fTrack;
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uint32 _reserved[3];
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};
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inline void
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BListView::ScrollTo(float x, float y)
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{
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/* OK, no private parts */
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ScrollTo(BPoint(x, y));
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}
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/*-------------------------------------------------------------*/
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#ifdef USE_OPENBEOS_NAMESPACE
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}
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#endif
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#endif /* _LIST_VIEW_H */
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