///////////////////////////////////////////////////////////////////////////// // 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_ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #include "wx/defs.h" #if wxUSE_TREECTRL #include "wx/control.h" #include "wx/treebase.h" #include "wx/textctrl.h" // wxTextCtrl::ms_classinfo used through CLASSINFO macro class WXDLLIMPEXP_FWD_CORE wxImageList; // ---------------------------------------------------------------------------- // wxTreeCtrlBase // ---------------------------------------------------------------------------- class WXDLLIMPEXP_CORE wxTreeCtrlBase : public wxControl { public: 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 total number of items in the control virtual unsigned int GetCount() const = 0; // 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; // 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; } // 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; } 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; } // 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; // Clears the currently focused item virtual void ClearFocusedItem() = 0; // Sets the currently focused item. Item should be valid virtual void SetFocusedItem(const wxTreeItemId& item) = 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; // selects all (direct) children for given parent (only for // multiselection controls) virtual void SelectChildren(const wxTreeItemId& parent) = 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; // common 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); }; // ---------------------------------------------------------------------------- // include the platform-dependent wxTreeCtrl class // ---------------------------------------------------------------------------- #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 #endif // wxUSE_TREECTRL #endif // _WX_TREECTRL_H_BASE_