1 files changed, 216 insertions, 0 deletions
diff --git a/shared/dragAndDrop.cpp b/shared/dragAndDrop.cpp
new file mode 100644
index 00000000..9261d604
--- /dev/null
+++ b/shared/dragAndDrop.cpp
@@ -0,0 +1,216 @@
+#include "dragAndDrop.h"
+#include <wx/dnd.h>
+#include <wx/window.h>
+#include <wx/combobox.h>
+#include <wx/textctrl.h>
+#include <wx/filepicker.h>
+#include <wx/filename.h>
+
+
+//define new event type
+const wxEventType FFS_DROP_FILE_EVENT = wxNewEventType();
+
+typedef void (wxEvtHandler::*FFSFileDropEventFunction)(FFSFileDropEvent&);
+
+#define FFSFileDropEventHandler(func) \
+    (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(FFSFileDropEventFunction, &func)
+
+class FFSFileDropEvent : public wxCommandEvent
+{
+public:
+    FFSFileDropEvent(const wxString& nameDropped, const wxWindow* dropWindow) :
+            wxCommandEvent(FFS_DROP_FILE_EVENT),
+            nameDropped_(nameDropped),
+            dropWindow_(dropWindow) {}
+
+    virtual wxEvent* Clone() const
+    {
+        return new FFSFileDropEvent(nameDropped_, dropWindow_);
+    }
+
+    const wxString  nameDropped_;
+    const wxWindow* dropWindow_;
+};
+
+//##############################################################################################################
+
+
+class WindowDropTarget : public wxFileDropTarget
+{
+public:
+    WindowDropTarget(wxWindow* dropWindow) :
+            dropWindow_(dropWindow) {}
+
+    virtual bool OnDropFiles(wxCoord x, wxCoord y, const wxArrayString& filenames)
+    {
+        if (!filenames.IsEmpty())
+        {
+            const wxString droppedFileName = filenames[0];
+
+            //create a custom event on drop window: execute event after file dropping is completed! (e.g. after mouse is released)
+            FFSFileDropEvent evt(droppedFileName, dropWindow_);
+            dropWindow_->AddPendingEvent(evt);
+        }
+        return false;
+    }
+
+private:
+    wxWindow* dropWindow_;
+};
+
+
+
+//##############################################################################################################
+
+using FreeFileSync::DragDropOnMainDlg;
+
+DragDropOnMainDlg::DragDropOnMainDlg(wxWindow*        dropWindow1,
+                                     wxWindow*        dropWindow2,
+                                     wxDirPickerCtrl* dirPicker,
+                                     wxComboBox*      dirName) :
+        dropWindow1_(dropWindow1),
+        dropWindow2_(dropWindow2),
+        dirPicker_(dirPicker),
+        dirName_(dirName)
+{
+    //prepare drag & drop
+    dropWindow1->SetDropTarget(new WindowDropTarget(dropWindow1)); //takes ownership
+    dropWindow2->SetDropTarget(new WindowDropTarget(dropWindow2)); //takes ownership
+
+    //redirect drag & drop event back to this class
+    dropWindow1->Connect(FFS_DROP_FILE_EVENT, FFSFileDropEventHandler(DragDropOnMainDlg::OnFilesDropped), NULL, this);
+    dropWindow2->Connect(FFS_DROP_FILE_EVENT, FFSFileDropEventHandler(DragDropOnMainDlg::OnFilesDropped), NULL, this);
+
+    //keep dirPicker and dirName synchronous
+    dirName->Connect( wxEVT_COMMAND_TEXT_UPDATED, wxCommandEventHandler( DragDropOnMainDlg::OnWriteDirManually ), NULL, this );
+    dirPicker->Connect( wxEVT_COMMAND_DIRPICKER_CHANGED, wxFileDirPickerEventHandler( DragDropOnMainDlg::OnDirSelected ), NULL, this );
+}
+
+
+void DragDropOnMainDlg::OnFilesDropped(FFSFileDropEvent& event)
+{
+    if (    this->dropWindow1_ == event.dropWindow_ || //file may be dropped on window 1 or 2
+            this->dropWindow2_ == event.dropWindow_)
+    {
+        if (AcceptDrop(event.nameDropped_))
+        {
+            wxString fileName = event.nameDropped_;
+            if (wxDirExists(fileName))
+            {
+                dirName_->SetSelection(wxNOT_FOUND);
+                dirName_->SetValue(fileName);
+                dirPicker_->SetPath(fileName);
+            }
+            else
+            {
+                fileName = wxFileName(fileName).GetPath();
+                if (wxDirExists(fileName))
+                {
+                    dirName_->SetSelection(wxNOT_FOUND);
+                    dirName_->SetValue(fileName);
+                    dirPicker_->SetPath(fileName);
+                }
+            }
+        }
+    }
+    else //should never be reached
+        event.Skip();
+};
+
+
+wxString formatDirectory(const wxString& dirname)
+{
+    wxString dirnameTmp = dirname;
+    dirnameTmp.Trim(true);  //remove whitespace characters from right
+    dirnameTmp.Trim(false); //remove whitespace characters from left
+
+    return dirnameTmp;
+}
+
+
+void DragDropOnMainDlg::OnWriteDirManually(wxCommandEvent& event)
+{
+    const wxString newDir = formatDirectory(event.GetString());
+    if (wxDirExists(newDir))
+        dirPicker_->SetPath(newDir);
+
+    event.Skip();
+}
+
+
+void DragDropOnMainDlg::OnDirSelected(wxFileDirPickerEvent& event)
+{
+    const wxString newPath = event.GetPath();
+    dirName_->SetSelection(wxNOT_FOUND);
+    dirName_->SetValue(newPath);
+
+    event.Skip();
+}
+
+//##############################################################################################################
+
+
+using FreeFileSync::DragDropOnDlg;
+
+DragDropOnDlg::DragDropOnDlg(wxWindow*        dropWindow,
+                             wxDirPickerCtrl* dirPicker,
+                             wxTextCtrl*      dirName) :
+        dropWindow_(dropWindow),
+        dirPicker_(dirPicker),
+        dirName_(dirName)
+{
+    //prepare drag & drop
+    dropWindow->SetDropTarget(new WindowDropTarget(dropWindow)); //takes ownership
+
+    //redirect drag & drop event back to this class
+    dropWindow->Connect(FFS_DROP_FILE_EVENT, FFSFileDropEventHandler(DragDropOnDlg::OnFilesDropped), NULL, this);
+
+    //keep dirPicker and dirName synchronous
+    dirName->Connect( wxEVT_COMMAND_TEXT_UPDATED, wxCommandEventHandler( DragDropOnDlg::OnWriteDirManually ), NULL, this );
+    dirPicker->Connect( wxEVT_COMMAND_DIRPICKER_CHANGED, wxFileDirPickerEventHandler( DragDropOnDlg::OnDirSelected ), NULL, this );
+}
+
+
+void DragDropOnDlg::OnFilesDropped(FFSFileDropEvent& event)
+{
+    if (this->dropWindow_ == event.dropWindow_)
+    {
+        wxString fileName = event.nameDropped_;
+        if (wxDirExists(fileName))
+        {
+            dirName_->SetValue(fileName);
+            dirPicker_->SetPath(fileName);
+        }
+        else
+        {
+            fileName = wxFileName(fileName).GetPath();
+            if (wxDirExists(fileName))
+            {
+                dirName_->SetValue(fileName);
+                dirPicker_->SetPath(fileName);
+            }
+        }
+    }
+    else //should never be reached
+        event.Skip();
+};
+
+
+void DragDropOnDlg::OnWriteDirManually(wxCommandEvent& event)
+{
+    const wxString newDir = formatDirectory(event.GetString());
+    if (wxDirExists(newDir))
+        dirPicker_->SetPath(newDir);
+
+    event.Skip();
+}
+
+
+void DragDropOnDlg::OnDirSelected(wxFileDirPickerEvent& event)
+{
+    const wxString newPath = event.GetPath();
+    dirName_->SetValue(newPath);
+
+    event.Skip();
+}
+