/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file) 
 and all other portions of this file are Copyright (c) 2013-2015 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#include "System.h"
#include "Main/GraphicUserInterface.h"
#include "FavoriteVolumesDialog.h"

namespace VeraCrypt
{
	FavoriteVolumesDialog::FavoriteVolumesDialog (wxWindow* parent, const FavoriteVolumeList &favorites, size_t newItemCount)
		: FavoriteVolumesDialogBase (parent), Favorites (favorites)
	{
		list <int> colPermilles;
		FavoritesListCtrl->InsertColumn (ColumnVolumePath, LangString["VOLUME"], wxLIST_FORMAT_LEFT, 1);
		colPermilles.push_back (500);
		FavoritesListCtrl->InsertColumn (ColumnMountPoint, LangString["MOUNT_POINT"], wxLIST_FORMAT_LEFT, 1);
		colPermilles.push_back (500);

		FavoritesListCtrl->SetMinSize (wxSize (400, -1));
		Gui->SetListCtrlHeight (FavoritesListCtrl, 15);
		Gui->SetListCtrlColumnWidths (FavoritesListCtrl, colPermilles);

		Layout();
		Fit();
		Center();
				
#ifdef TC_MACOSX
		// wxMac cannot insert items to wxListCtrl due to a bug
		MoveUpButton->Show (false);
		MoveDownButton->Show (false);
#endif

		vector <wstring> fields (FavoritesListCtrl->GetColumnCount());
		size_t itemCount = 0;
		foreach (shared_ptr <FavoriteVolume> favorite, Favorites)
		{
			fields[ColumnVolumePath] = favorite->Path;
			fields[ColumnMountPoint] = favorite->MountPoint;
			Gui->AppendToListCtrl (FavoritesListCtrl, fields, -1, favorite.get());
			
			if (++itemCount > Favorites.size() - newItemCount)
			{
				FavoritesListCtrl->SetItemState (itemCount - 1, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
				FavoritesListCtrl->EnsureVisible (itemCount - 1);
			}
		}

		UpdateButtons();
		FavoritesListCtrl->SetFocus();
	}
	
	void FavoriteVolumesDialog::OnMoveDownButtonClick (wxCommandEvent& event)
	{
		FreezeScope freeze (this);
		foreach_reverse (long itemIndex, Gui->GetListCtrlSelectedItems (FavoritesListCtrl))
		{
			if (itemIndex >= FavoritesListCtrl->GetItemCount() - 1)
				break;
			Gui->MoveListCtrlItem (FavoritesListCtrl, itemIndex, itemIndex + 1);
		}
		UpdateButtons();
	}

	void FavoriteVolumesDialog::OnMoveUpButtonClick (wxCommandEvent& event)
	{
		FreezeScope freeze (this);
		foreach (long itemIndex, Gui->GetListCtrlSelectedItems (FavoritesListCtrl))
		{
			if (itemIndex == 0)
				break;

			Gui->MoveListCtrlItem (FavoritesListCtrl, itemIndex, itemIndex - 1);
		}
		UpdateButtons();
	}

	void FavoriteVolumesDialog::OnOKButtonClick (wxCommandEvent& event)
	{
		FavoriteVolumeList newFavorites;

		for (long i = 0; i < FavoritesListCtrl->GetItemCount(); i++)
		{
			newFavorites.push_back (make_shared <FavoriteVolume> (
				*reinterpret_cast <FavoriteVolume *> (FavoritesListCtrl->GetItemData (i))));
		}

		Favorites = newFavorites;
		EndModal (wxID_OK);
	}

	void FavoriteVolumesDialog::OnRemoveAllButtonClick (wxCommandEvent& event)
	{
		FavoritesListCtrl->DeleteAllItems();
		UpdateButtons();
	}

	void FavoriteVolumesDialog::OnRemoveButtonClick (wxCommandEvent& event)
	{
		long offset = 0;
		foreach (long item, Gui->GetListCtrlSelectedItems (FavoritesListCtrl))
			FavoritesListCtrl->DeleteItem (item - offset++);
	}

	void FavoriteVolumesDialog::UpdateButtons ()
	{
		bool selected = FavoritesListCtrl->GetSelectedItemCount() > 0;

		MoveDownButton->Enable (selected);
		MoveUpButton->Enable (selected);
		RemoveAllButton->Enable (FavoritesListCtrl->GetItemCount() > 0);
		RemoveButton->Enable (selected);
	}
}