#9591: Item state (icons) for wxTreeCtrl on any platform

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54267 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/treectlg.h

@@ -284,6 +284,9 @@ protected:
                       bool unselect_others = true,
                       bool extended_select = false);
 
+    virtual int DoGetItemState(const wxTreeItemId& item) const;
+    virtual void DoSetItemState(const wxTreeItemId& item, int state);
+
     virtual wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
                                       size_t previous,
                                       const wxString& text,

include/wx/msw/treectrl.h

@@ -202,14 +202,6 @@ public:
     virtual bool SetBackgroundColour(const wxColour &colour);
     virtual bool SetForegroundColour(const wxColour &colour);
 
-    // get/set the check state for the item (only for wxTR_MULTIPLE)
-    bool IsItemChecked(const wxTreeItemId& item) const;
-    void SetItemCheck(const wxTreeItemId& item, bool check = true);
-
-    // set/get the item state.image (state == -1 means cycle to the next one)
-    void SetState(const wxTreeItemId& node, int state);
-    int GetState(const wxTreeItemId& node);
-
     // returns true if the platform should explicitly apply a theme border
     virtual bool CanApplyThemeBorder() const { return false; }
 
@@ -223,6 +215,9 @@ protected:
     // end edit label
     void DoEndEditLabel(bool discardChanges = false);
 
+    virtual int DoGetItemState(const wxTreeItemId& item) const;
+    virtual void DoSetItemState(const wxTreeItemId& item, int state);
+
     virtual wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
                                       size_t pos,
                                       const wxString& text,

include/wx/treebase.h

@@ -150,6 +150,11 @@ enum wxTreeItemIcon
     wxTreeItemIcon_Max
 };
 
+// special values for the 'state' parameter of wxTreeCtrl::SetItemState()
+static const int wxTREE_ITEMSTATE_NONE  = -1;   // not state (no display state image)
+static const int wxTREE_ITEMSTATE_NEXT  = -2;   // cycle to the next state
+static const int wxTREE_ITEMSTATE_PREV  = -3;   // cycle to the previous state
+
 // ----------------------------------------------------------------------------
 // wxTreeCtrl flags
 // ----------------------------------------------------------------------------

include/wx/treectrl.h

@@ -118,6 +118,12 @@ public:
         // 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
     // ---------
 
@@ -156,6 +162,9 @@ public:
     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
     // ---------------------
 
@@ -387,6 +396,10 @@ public:
 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