X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c193b707eb53c05fba213449a271bf01c7279575..c2a738e372126950e5c70f72a3e8876f1ac89bf5:/include/wx/treectrl.h diff --git a/include/wx/treectrl.h b/include/wx/treectrl.h index 55642822d7..ee13f4f4a4 100644 --- a/include/wx/treectrl.h +++ b/include/wx/treectrl.h @@ -1,3 +1,14 @@ +///////////////////////////////////////////////////////////////////////////// +// Name: wx/treectrl.h +// Purpose: wxTreeCtrl base header +// Author: Karsten Ballueder +// Modified by: +// Created: +// Copyright: (c) Karsten Ballueder +// RCS-ID: $Id$ +// Licence: wxWindows licence +///////////////////////////////////////////////////////////////////////////// + #ifndef _WX_TREECTRL_H_BASE_ #define _WX_TREECTRL_H_BASE_ @@ -5,118 +16,457 @@ // headers // ---------------------------------------------------------------------------- -#include "wx/control.h" -#include "wx/event.h" +#include "wx/defs.h" -// ---------------------------------------------------------------------------- -// include the platform-dependent wxTreeCtrl class -// ---------------------------------------------------------------------------- +#if wxUSE_TREECTRL -#if defined(__WXMSW__) - #ifdef __WIN16__ - #include "wx/generic/treectrl.h" - #else - #include "wx/msw/treectrl.h" - #endif -#elif defined(__WXMOTIF__) - #include "wx/generic/treectrl.h" -#elif defined(__WXGTK__) - #include "wx/generic/treectrl.h" -#elif defined(__WXQT__) - #include "wx/qt/treectrl.h" -#elif defined(__WXMAC__) - #include "wx/generic/treectrl.h" -#elif defined(__WXSTUBS__) - #include "wx/generic/treectrl.h" -#endif +#include "wx/control.h" +#include "wx/treebase.h" +#include "wx/textctrl.h" // wxTextCtrl::ms_classinfo used through CLASSINFO macro + +class WXDLLIMPEXP_FWD_CORE wxImageList; // ---------------------------------------------------------------------------- -// wxTreeEvent is a special class for all events associated with tree controls -// -// NB: note that not all accessors make sense for all events, see the event -// descriptions below +// wxTreeCtrlBase // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxTreeEvent : public wxNotifyEvent +class WXDLLIMPEXP_CORE wxTreeCtrlBase : public wxControl { -friend wxTreeCtrl; public: - wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0); + wxTreeCtrlBase() + { + m_imageListNormal = + m_imageListState = NULL; + m_ownsImageListNormal = + m_ownsImageListState = false; + + // arbitrary default + m_spacing = 18; + + // quick DoGetBestSize calculation + m_quickBestSize = true; + } + + virtual ~wxTreeCtrlBase(); // accessors - // get the item on which the operation was performed or the newly - // selected item for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events - wxTreeItemId GetItem() const { return m_item; } + // --------- - // for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously - // selected item - wxTreeItemId GetOldItem() const { return m_itemOld; } + // get the total number of items in the control + virtual unsigned int GetCount() const = 0; - // the point where the mouse was when the drag operation started (for - // wxEVT_COMMAND_TREE_BEGIN_(R)DRAG events only) - wxPoint GetPoint() const { return m_pointDrag; } + // indent is the number of pixels the children are indented relative to + // the parents position. SetIndent() also redraws the control + // immediately. + virtual unsigned int GetIndent() const = 0; + virtual void SetIndent(unsigned int indent) = 0; - // keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only) - int GetCode() const { return m_code; } + // spacing is the number of pixels between the start and the Text + // (has no effect under wxMSW) + unsigned int GetSpacing() const { return m_spacing; } + void SetSpacing(unsigned int spacing) { m_spacing = spacing; } - // label (for EVT_TREE_{BEGIN|END}_LABEL_EDIT only) - const wxString& GetLabel() const { return m_label; } + // image list: these functions allow to associate an image list with + // the control and retrieve it. Note that the control does _not_ delete + // the associated image list when it's deleted in order to allow image + // lists to be shared between different controls. + // + // The normal image list is for the icons which correspond to the + // normal tree item state (whether it is selected or not). + // Additionally, the application might choose to show a state icon + // which corresponds to an app-defined item state (for example, + // checked/unchecked) which are taken from the state image list. + wxImageList *GetImageList() const { return m_imageListNormal; } + wxImageList *GetStateImageList() const { return m_imageListState; } -private: - // TODO we could save some space by using union here - int m_code; - wxTreeItemId m_item, - m_itemOld; - wxPoint m_pointDrag; - wxString m_label; + virtual void SetImageList(wxImageList *imageList) = 0; + virtual void SetStateImageList(wxImageList *imageList) = 0; + void AssignImageList(wxImageList *imageList) + { + SetImageList(imageList); + m_ownsImageListNormal = true; + } + void AssignStateImageList(wxImageList *imageList) + { + SetStateImageList(imageList); + m_ownsImageListState = true; + } - DECLARE_DYNAMIC_CLASS(wxTreeEvent) -}; -typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&); + // Functions to work with tree ctrl items. Unfortunately, they can _not_ be + // member functions of wxTreeItem because they must know the tree the item + // belongs to for Windows implementation and storing the pointer to + // wxTreeCtrl in each wxTreeItem is just too much waste. + + // accessors + // --------- + + // retrieve items label + virtual wxString GetItemText(const wxTreeItemId& item) const = 0; + // get one of the images associated with the item (normal by default) + virtual int GetItemImage(const wxTreeItemId& item, + wxTreeItemIcon which = wxTreeItemIcon_Normal) const = 0; + // get the data associated with the item + virtual wxTreeItemData *GetItemData(const wxTreeItemId& item) const = 0; + + // get the item's text colour + virtual wxColour GetItemTextColour(const wxTreeItemId& item) const = 0; + + // get the item's background colour + virtual wxColour GetItemBackgroundColour(const wxTreeItemId& item) const = 0; + + // get the item's font + virtual wxFont GetItemFont(const wxTreeItemId& item) const = 0; + + // get the items state + int GetItemState(const wxTreeItemId& item) const + { + return DoGetItemState(item); + } + + // modifiers + // --------- + + // set items label + virtual void SetItemText(const wxTreeItemId& item, const wxString& text) = 0; + // set one of the images associated with the item (normal by default) + virtual void SetItemImage(const wxTreeItemId& item, + int image, + wxTreeItemIcon which = wxTreeItemIcon_Normal) = 0; + // associate some data with the item + virtual void SetItemData(const wxTreeItemId& item, wxTreeItemData *data) = 0; + + // force appearance of [+] button near the item. This is useful to + // allow the user to expand the items which don't have any children now + // - but instead add them only when needed, thus minimizing memory + // usage and loading time. + virtual void SetItemHasChildren(const wxTreeItemId& item, + bool has = true) = 0; + + // the item will be shown in bold + virtual void SetItemBold(const wxTreeItemId& item, bool bold = true) = 0; + + // the item will be shown with a drop highlight + virtual void SetItemDropHighlight(const wxTreeItemId& item, + bool highlight = true) = 0; + + // set the items text colour + virtual void SetItemTextColour(const wxTreeItemId& item, + const wxColour& col) = 0; + + // set the items background colour + virtual void SetItemBackgroundColour(const wxTreeItemId& item, + const wxColour& col) = 0; + + // set the items font (should be of the same height for all items) + virtual void SetItemFont(const wxTreeItemId& item, + const wxFont& font) = 0; + + // set the items state (special state values: wxTREE_ITEMSTATE_NONE/NEXT/PREV) + void SetItemState(const wxTreeItemId& item, int state); + + // item status inquiries + // --------------------- + + // is the item visible (it might be outside the view or not expanded)? + virtual bool IsVisible(const wxTreeItemId& item) const = 0; + // does the item has any children? + virtual bool ItemHasChildren(const wxTreeItemId& item) const = 0; + // same as above + bool HasChildren(const wxTreeItemId& item) const + { return ItemHasChildren(item); } + // is the item expanded (only makes sense if HasChildren())? + virtual bool IsExpanded(const wxTreeItemId& item) const = 0; + // is this item currently selected (the same as has focus)? + virtual bool IsSelected(const wxTreeItemId& item) const = 0; + // is item text in bold font? + virtual bool IsBold(const wxTreeItemId& item) const = 0; + // is the control empty? + bool IsEmpty() const; + + + // number of children + // ------------------ + + // if 'recursively' is false, only immediate children count, otherwise + // the returned number is the number of all items in this branch + virtual size_t GetChildrenCount(const wxTreeItemId& item, + bool recursively = true) const = 0; + + // navigation + // ---------- + + // wxTreeItemId.IsOk() will return false if there is no such item + + // get the root tree item + virtual wxTreeItemId GetRootItem() const = 0; + + // get the item currently selected (may return NULL if no selection) + virtual wxTreeItemId GetSelection() const = 0; + + // get the items currently selected, return the number of such item + // + // NB: this operation is expensive and can take a long time for a + // control with a lot of items (~ O(number of items)). + virtual size_t GetSelections(wxArrayTreeItemIds& selections) const = 0; + + // get the last item to be clicked when the control has wxTR_MULTIPLE + // equivalent to GetSelection() if not wxTR_MULTIPLE + virtual wxTreeItemId GetFocusedItem() const = 0; + + // get the parent of this item (may return NULL if root) + virtual wxTreeItemId GetItemParent(const wxTreeItemId& item) const = 0; + + // for this enumeration function you must pass in a "cookie" parameter + // which is opaque for the application but is necessary for the library + // to make these functions reentrant (i.e. allow more than one + // enumeration on one and the same object simultaneously). Of course, + // the "cookie" passed to GetFirstChild() and GetNextChild() should be + // the same! + + // get the first child of this item + virtual wxTreeItemId GetFirstChild(const wxTreeItemId& item, + wxTreeItemIdValue& cookie) const = 0; + // get the next child + virtual wxTreeItemId GetNextChild(const wxTreeItemId& item, + wxTreeItemIdValue& cookie) const = 0; + // get the last child of this item - this method doesn't use cookies + virtual wxTreeItemId GetLastChild(const wxTreeItemId& item) const = 0; + + // get the next sibling of this item + virtual wxTreeItemId GetNextSibling(const wxTreeItemId& item) const = 0; + // get the previous sibling + virtual wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const = 0; + + // get first visible item + virtual wxTreeItemId GetFirstVisibleItem() const = 0; + // get the next visible item: item must be visible itself! + // see IsVisible() and wxTreeCtrl::GetFirstVisibleItem() + virtual wxTreeItemId GetNextVisible(const wxTreeItemId& item) const = 0; + // get the previous visible item: item must be visible itself! + virtual wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const = 0; + + // operations + // ---------- + + // add the root node to the tree + virtual wxTreeItemId AddRoot(const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) = 0; + + // insert a new item in as the first child of the parent + wxTreeItemId PrependItem(const wxTreeItemId& parent, + const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) + { + return DoInsertItem(parent, 0u, text, image, selImage, data); + } + + // insert a new item after a given one + wxTreeItemId InsertItem(const wxTreeItemId& parent, + const wxTreeItemId& idPrevious, + const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) + { + return DoInsertAfter(parent, idPrevious, text, image, selImage, data); + } + + // insert a new item before the one with the given index + wxTreeItemId InsertItem(const wxTreeItemId& parent, + size_t pos, + const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) + { + return DoInsertItem(parent, pos, text, image, selImage, data); + } + + // insert a new item in as the last child of the parent + wxTreeItemId AppendItem(const wxTreeItemId& parent, + const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) + { + return DoInsertItem(parent, (size_t)-1, text, image, selImage, data); + } + + // delete this item and associated data if any + virtual void Delete(const wxTreeItemId& item) = 0; + // delete all children (but don't delete the item itself) + // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events + virtual void DeleteChildren(const wxTreeItemId& item) = 0; + // delete all items from the tree + // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events + virtual void DeleteAllItems() = 0; + + // expand this item + virtual void Expand(const wxTreeItemId& item) = 0; + // expand the item and all its children recursively + void ExpandAllChildren(const wxTreeItemId& item); + // expand all items + void ExpandAll(); + // collapse the item without removing its children + virtual void Collapse(const wxTreeItemId& item) = 0; + // collapse the item and all its children + void CollapseAllChildren(const wxTreeItemId& item); + // collapse all items + void CollapseAll(); + // collapse the item and remove all children + virtual void CollapseAndReset(const wxTreeItemId& item) = 0; + // toggles the current state + virtual void Toggle(const wxTreeItemId& item) = 0; + + // remove the selection from currently selected item (if any) + virtual void Unselect() = 0; + // unselect all items (only makes sense for multiple selection control) + virtual void UnselectAll() = 0; + // select this item + virtual void SelectItem(const wxTreeItemId& item, bool select = true) = 0; + // unselect this item + void UnselectItem(const wxTreeItemId& item) { SelectItem(item, false); } + // toggle item selection + void ToggleItemSelection(const wxTreeItemId& item) + { + SelectItem(item, !IsSelected(item)); + } + + // make sure this item is visible (expanding the parent item and/or + // scrolling to this item if necessary) + virtual void EnsureVisible(const wxTreeItemId& item) = 0; + // scroll to this item (but don't expand its parent) + virtual void ScrollTo(const wxTreeItemId& item) = 0; + + // start editing the item label: this (temporarily) replaces the item + // with a one line edit control. The item will be selected if it hadn't + // been before. textCtrlClass parameter allows you to create an edit + // control of arbitrary user-defined class deriving from wxTextCtrl. + virtual wxTextCtrl *EditLabel(const wxTreeItemId& item, + wxClassInfo* textCtrlClass = CLASSINFO(wxTextCtrl)) = 0; + // returns the same pointer as StartEdit() if the item is being edited, + // NULL otherwise (it's assumed that no more than one item may be + // edited simultaneously) + virtual wxTextCtrl *GetEditControl() const = 0; + // end editing and accept or discard the changes to item label + virtual void EndEditLabel(const wxTreeItemId& item, + bool discardChanges = false) = 0; + + // sorting + // ------- + + // this function is called to compare 2 items and should return -1, 0 + // or +1 if the first item is less than, equal to or greater than the + // second one. The base class version performs alphabetic comparaison + // of item labels (GetText) + virtual int OnCompareItems(const wxTreeItemId& item1, + const wxTreeItemId& item2) + { + return wxStrcmp(GetItemText(item1), GetItemText(item2)); + } + + // sort the children of this item using OnCompareItems + // + // NB: this function is not reentrant and not MT-safe (FIXME)! + virtual void SortChildren(const wxTreeItemId& item) = 0; + + // items geometry + // -------------- + + // determine to which item (if any) belongs the given point (the + // coordinates specified are relative to the client area of tree ctrl) + // and, in the second variant, fill the flags parameter with a bitmask + // of wxTREE_HITTEST_xxx constants. + wxTreeItemId HitTest(const wxPoint& point) const + { int dummy; return DoTreeHitTest(point, dummy); } + wxTreeItemId HitTest(const wxPoint& point, int& flags) const + { return DoTreeHitTest(point, flags); } + + // get the bounding rectangle of the item (or of its label only) + virtual bool GetBoundingRect(const wxTreeItemId& item, + wxRect& rect, + bool textOnly = false) const = 0; + + + // implementation + // -------------- + + virtual bool ShouldInheritColours() const { return false; } + + // hint whether to calculate best size quickly or accurately + void SetQuickBestSize(bool q) { m_quickBestSize = q; } + bool GetQuickBestSize() const { return m_quickBestSize; } + +protected: + virtual wxSize DoGetBestSize() const; + + // comon part of Get/SetItemState() + virtual int DoGetItemState(const wxTreeItemId& item) const = 0; + virtual void DoSetItemState(const wxTreeItemId& item, int state) = 0; + + // common part of Append/Prepend/InsertItem() + // + // pos is the position at which to insert the item or (size_t)-1 to append + // it to the end + virtual wxTreeItemId DoInsertItem(const wxTreeItemId& parent, + size_t pos, + const wxString& text, + int image, int selImage, + wxTreeItemData *data) = 0; + + // and this function implements overloaded InsertItem() taking wxTreeItemId + // (it can't be called InsertItem() as we'd have virtual function hiding + // problem in derived classes then) + virtual wxTreeItemId DoInsertAfter(const wxTreeItemId& parent, + const wxTreeItemId& idPrevious, + const wxString& text, + int image = -1, int selImage = -1, + wxTreeItemData *data = NULL) = 0; + + // real HitTest() implementation: again, can't be called just HitTest() + // because it's overloaded and so the non-virtual overload would be hidden + // (and can't be called DoHitTest() because this is already in wxWindow) + virtual wxTreeItemId DoTreeHitTest(const wxPoint& point, + int& flags) const = 0; + + + wxImageList *m_imageListNormal, // images for tree elements + *m_imageListState; // special images for app defined states + bool m_ownsImageListNormal, + m_ownsImageListState; + + // spacing between left border and the text + unsigned int m_spacing; + + // whether full or quick calculation is done in DoGetBestSize + bool m_quickBestSize; + + + wxDECLARE_NO_COPY_CLASS(wxTreeCtrlBase); +}; // ---------------------------------------------------------------------------- -// macros for handling tree control events +// include the platform-dependent wxTreeCtrl class // ---------------------------------------------------------------------------- -// GetItem() returns the item being dragged, GetPoint() the mouse coords -#define EVT_TREE_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// GetItem() returns the itme whose label is being edited, GetLabel() returns -// the current item label for BEGIN and the would be new one for END. -// -// Vetoing BEGIN event means that label editing won't happen at all, -// vetoing END means that the new value is discarded and the old one kept -#define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// provide/update information about GetItem() item -#define EVT_TREE_GET_INFO(id, fn) { wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_SET_INFO(id, fn) { wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// GetItem() is the item being expanded/collapsed, the "ING" versions can use -#define EVT_TREE_ITEM_EXPANDED(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_EXPANDING(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_COLLAPSED(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_COLLAPSING(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetOldItem() is the item which had the selection previously, GetItem() is -// the item which acquires selection -#define EVT_TREE_SEL_CHANGED(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, -#define EVT_TREE_SEL_CHANGING(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetCode() returns the key code -// NB: this is the only message for which GetItem() is invalid (you may get the -// item from GetSelection()) -#define EVT_TREE_KEY_DOWN(id, fn) { wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetItem() returns the item being deleted, the associated data (if any) will -// be deleted just after the return of this event handler (if any) -#define EVT_TREE_DELETE_ITEM(id, fn) { wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// GetItem() returns the item that was activated (double click, enter, space) -#define EVT_TREE_ITEM_ACTIVATED(id, fn) { wxEVT_COMMAND_TREE_ITEM_ACTIVATED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - +#if defined(__WXUNIVERSAL__) + #include "wx/generic/treectlg.h" +#elif defined(__WXPALMOS__) + #include "wx/generic/treectlg.h" +#elif defined(__WXMSW__) + #include "wx/msw/treectrl.h" +#elif defined(__WXMOTIF__) + #include "wx/generic/treectlg.h" +#elif defined(__WXGTK__) + #include "wx/generic/treectlg.h" +#elif defined(__WXMAC__) + #include "wx/generic/treectlg.h" +#elif defined(__WXCOCOA__) + #include "wx/generic/treectlg.h" +#elif defined(__WXPM__) + #include "wx/generic/treectlg.h" #endif - // _WX_TREECTRL_H_BASE_ + +#endif // wxUSE_TREECTRL + +#endif // _WX_TREECTRL_H_BASE_