implement wxWindow::DragAcceptFiles() on all platforms

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@56758 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -104,6 +104,7 @@ All (GUI):
   single-cell paragraphs.
 - Fixed wxHTML's line breaks handling in <pre> blocks broken in 2.8.8 (#10120).
 - wxHTML: don't include extra whitespace in table cells.
+- Implemented wxWindow::DragAcceptFiles() on all platforms.
 
 All (Unix):
 

docs/latex/wx/window.tex

@@ -567,7 +567,9 @@ will not accept drop file events.}
 
 \wxheading{Remarks}
 
-Windows only.
+Windows only until version 2.8.9, available on all platforms since 2.8.10.
+Cannot be used together with \helpref{SetDropTarget}{wxwindowsetdroptarget} on
+non-Windows platforms.
 
 
 \membersection{wxWindow::Enable}\label{wxwindowenable}

include/wx/arrstr.h

@@ -364,6 +364,11 @@ public:
             m_strings[i] = m_array[i];
         return m_strings;
     }
+
+#if wxABI_VERSION >= 20810
+    wxString* Release();
+#endif // wxABI_VERSION >= 20810
+
 private:
     const wxArrayString& m_array;
     wxString* m_strings;

include/wx/window.h

@@ -1027,6 +1027,14 @@ public:
         // NULL; it's owned by the window and will be deleted by it)
     virtual void SetDropTarget( wxDropTarget *dropTarget ) = 0;
     virtual wxDropTarget *GetDropTarget() const { return m_dropTarget; }
+
+#ifndef __WXMSW__ // MSW version is in msw/window.h
+#if wxABI_VERSION >= 20810
+    // Accept files for dragging
+    void DragAcceptFiles(bool accept);
+#endif // wxABI_VERSION >= 20810
+#endif // !__WXMSW__
+
 #endif // wxUSE_DRAG_AND_DROP
 
     // constraints and sizers

src/common/string.cpp

@@ -2645,3 +2645,10 @@ int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)
 {
     return -s1->Cmp(*s2);
 }
+
+wxString* wxCArrayString::Release()
+{
+    wxString *r = GetStrings();
+    m_strings = NULL;
+    return r;
+}

src/common/wincmn.cpp

@@ -2749,6 +2749,56 @@ void wxWindowBase::DoMoveInTabOrder(wxWindow *win, MoveKind move)
     return win ? win->GetMainWindowOfCompositeControl() : NULL;
 }
 
+// ----------------------------------------------------------------------------
+// drag and drop
+// ----------------------------------------------------------------------------
+
+#if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
+
+class wxDragAcceptFilesImplTarget : public wxFileDropTarget
+{
+public:
+    wxDragAcceptFilesImplTarget(wxWindowBase *win) : m_win(win) {}
+
+    virtual bool OnDropFiles(wxCoord x, wxCoord y,
+                             const wxArrayString& filenames)
+    {
+        wxDropFilesEvent event(wxEVT_DROP_FILES,
+                               filenames.size(),
+                               wxCArrayString(filenames).Release());
+        event.SetEventObject(m_win);
+        event.m_pos.x = x;
+        event.m_pos.y = y;
+
+        return m_win->GetEventHandler()->ProcessEvent(event);
+    }
+
+private:
+    wxWindowBase * const m_win;
+
+    DECLARE_NO_COPY_CLASS(wxDragAcceptFilesImplTarget)
+};
+
+
+// Generic version of DragAcceptFiles(). It works by installing a simple
+// wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
+// together with explicit SetDropTarget() calls.
+void wxWindowBase::DragAcceptFiles(bool accept)
+{
+    if ( accept )
+    {
+        wxASSERT_MSG( !GetDropTarget(),
+                      _T("cannot use DragAcceptFiles() and SetDropTarget() together") );
+        SetDropTarget(new wxDragAcceptFilesImplTarget(this));
+    }
+    else
+    {
+        SetDropTarget(NULL);
+    }
+}
+
+#endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
+
 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------

version-script.in

@@ -25,7 +25,9 @@
 
 # public symbols added in 2.8.10 (please keep in alphabetical order):
 @WX_VERSION_TAG@.10 {
+        *wxCArrayString*Release*;
         *wxDCBase*GetFontPointSizeAdjustment*;
+        *wxWindowBase*DragAcceptFiles*;
 };
 
 # public symbols added in 2.8.9 (please keep in alphabetical order):