/*
 *  ReactOS winfile
 *
 *  childwnd.c
 *
 *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifdef _MSC_VER
#include "stdafx.h"
#else
#define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <process.h>
#include <stdio.h>
#endif
    
#include <windowsx.h>
#include <ctype.h>
#include <assert.h>
#define ASSERT assert

#include "main.h"
#include "framewnd.h"
#include "childwnd.h"
#include "treeview.h"
#include "listview.h"
#include "dialogs.h"
#include "utils.h"
#include "run.h"
#include "trace.h"


#ifdef _NO_EXTENSIONS
//#define	COLOR_SPLITBAR		WHITE_BRUSH
#define	COLOR_SPLITBAR		LTGRAY_BRUSH
#else
#define	COLOR_SPLITBAR		LTGRAY_BRUSH
#endif

////////////////////////////////////////////////////////////////////////////////
// Global Variables:
//


////////////////////////////////////////////////////////////////////////////////
// Local module support methods
//

static BOOL pane_command(Pane* pane, UINT cmd)
{
	switch(cmd) {
	case ID_VIEW_NAME:
		if (pane->visible_cols) {
			pane->visible_cols = 0;
			calc_widths(pane, TRUE);
#ifndef _NO_EXTENSIONS
			set_header(pane);
#endif
			InvalidateRect(pane->hWnd, 0, TRUE);
			CheckMenuItem(Globals.hMenuView, ID_VIEW_NAME, MF_BYCOMMAND|MF_CHECKED);
//			CheckMenuItem(Globals.hMenuView, ID_VIEW_ALL_ATTRIBUTES, MF_BYCOMMAND);
//			CheckMenuItem(Globals.hMenuView, ID_VIEW_SELECTED_ATTRIBUTES, MF_BYCOMMAND);
		}
		break;
#if 0
	case ID_VIEW_ALL_ATTRIBUTES:
		if (pane->visible_cols != COL_ALL) {
			pane->visible_cols = COL_ALL;
			calc_widths(pane, TRUE);
			InvalidateRect(pane->hWnd, 0, TRUE);
			CheckMenuItem(Globals.hMenuView, ID_VIEW_NAME, MF_BYCOMMAND);
//			CheckMenuItem(Globals.hMenuView, ID_VIEW_ALL_ATTRIBUTES, MF_BYCOMMAND|MF_CHECKED);
//			CheckMenuItem(Globals.hMenuView, ID_VIEW_SELECTED_ATTRIBUTES, MF_BYCOMMAND);
		}
		break;
#endif
		// TODO: more command ids...
	default:
		return FALSE;
	}
	return TRUE;
}

static void draw_splitbar(HWND hWnd, int x)
{
	RECT rt;
	HDC hdc = GetDC(hWnd);

	GetClientRect(hWnd, &rt);
	rt.left = x - SPLIT_WIDTH/2;
	rt.right = x + SPLIT_WIDTH/2+1;
	InvertRect(hdc, &rt);
	ReleaseDC(hWnd, hdc);
}

static void ResizeWnd(ChildWnd* pChildWnd, int cx, int cy)
{
	HDWP hdwp = BeginDeferWindowPos(2);
	RECT rt = {0, 0, cx, cy};

	cx = pChildWnd->nSplitPos + SPLIT_WIDTH/2;
	DeferWindowPos(hdwp, pChildWnd->left.hWnd, 0, rt.left, rt.top, pChildWnd->nSplitPos-SPLIT_WIDTH/2-rt.left, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
	DeferWindowPos(hdwp, pChildWnd->right.hWnd, 0, rt.left+cx+1, rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
	EndDeferWindowPos(hdwp);
}

static void OnSize(ChildWnd* pChildWnd, WPARAM wParam, LPARAM lParam)
{
    if (wParam != SIZE_MINIMIZED) {
		ResizeWnd(pChildWnd, LOWORD(lParam), HIWORD(lParam));
    }
}

void OnFileMove(HWND hWnd)
{
	struct ExecuteDialog dlg = {{0}};
    if (DialogBoxParam(Globals.hInstance, MAKEINTRESOURCE(IDD_DIALOG_FILE_MOVE), hWnd, MoveFileWndProc, (LPARAM)&dlg) == IDOK) {
	}
}

static void OnPaint(HWND hWnd, ChildWnd* pChildWnd)
{
    HBRUSH lastBrush;
	PAINTSTRUCT ps;
	RECT rt;

	BeginPaint(hWnd, &ps);
	GetClientRect(hWnd, &rt);
    lastBrush = SelectObject(ps.hdc, (HBRUSH)GetStockObject(COLOR_SPLITBAR));
    Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
    SelectObject(ps.hdc, lastBrush);
//    rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
//    FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
	EndPaint(hWnd, &ps);
}

////////////////////////////////////////////////////////////////////////////////
//
//  FUNCTION: _CmdWndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes WM_COMMAND messages for the main frame window.
//
//

static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	//UINT cmd = LOWORD(wParam);
	//HWND hChildWnd;

	switch (LOWORD(wParam)) {
    // Parse the menu selections:
/*
//        case ID_FILE_MOVE:
//            OnFileMove(hWnd);
//            break;
        case ID_FILE_COPY:
        case ID_FILE_COPY_CLIPBOARD:
        case ID_FILE_DELETE:
        case ID_FILE_RENAME:
        case ID_FILE_PROPERTIES:
        case ID_FILE_COMPRESS:
        case ID_FILE_UNCOMPRESS:
            break;
//        case ID_FILE_RUN:
//            OnFileRun();
//            break;
        case ID_FILE_PRINT:
        case ID_FILE_ASSOCIATE:
        case ID_FILE_CREATE_DIRECTORY:
        case ID_FILE_SEARCH:
        case ID_FILE_SELECT_FILES:
            break;
 */
        case ID_FILE_EXIT:
            SendMessage(hWnd, WM_CLOSE, 0, 0);
            break;
/*
        case ID_DISK_COPY_DISK:
			break;
        case ID_DISK_LABEL_DISK:
			break;
        case ID_DISK_CONNECT_NETWORK_DRIVE:
            MapNetworkDrives(hWnd, TRUE);
			break;
        case ID_DISK_DISCONNECT_NETWORK_DRIVE:
            MapNetworkDrives(hWnd, FALSE);
			break;
        case ID_DISK_SHARE_AS:
			break;
        case ID_DISK_STOP_SHARING:
			break;
        case ID_DISK_SELECT_DRIVE:
			break;
 */
/*
        case ID_TREE_EXPAND_ONE_LEVEL:
        case ID_TREE_EXPAND_ALL:
        case ID_TREE_EXPAND_BRANCH:
        case ID_TREE_COLLAPSE_BRANCH:
            MessageBeep(-1);
			break;
 */
        case ID_VIEW_BY_FILE_TYPE:
			{
			struct ExecuteDialog dlg = {{0}};
            if (DialogBoxParam(Globals.hInstance, MAKEINTRESOURCE(IDD_DIALOG_VIEW_TYPE), hWnd, ViewFileTypeWndProc, (LPARAM)&dlg) == IDOK) {
            }
			}
			break;
        case ID_OPTIONS_CONFIRMATION:
			{
			struct ExecuteDialog dlg = {{0}};
            if (DialogBoxParam(Globals.hInstance, MAKEINTRESOURCE(IDD_DIALOG_OPTIONS_CONFIRMATON), hWnd, OptionsConfirmationWndProc, (LPARAM)&dlg) == IDOK) {
            }
			}
            break;
		case ID_WINDOW_NEW_WINDOW:
            CreateChildWindow(-1);
//			{
//			ChildWnd* pChildWnd = alloc_child_window(path);
//			if (!create_child_window(pChildWnd))
//				free(pChildWnd);
//			}
			break;
		default:
//  			return DefMDIChildProc(hWnd, message, wParam, lParam);
            return FALSE;
            break;
	}
	return TRUE;
}

////////////////////////////////////////////////////////////////////////////////
//
//  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the child windows.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static int last_split;

	ChildWnd* pChildWnd = (ChildWnd*)GetWindowLong(hWnd, GWL_USERDATA);
	ASSERT(pChildWnd);

	switch(message) {
	case WM_CREATE:
        CreateTreeWnd(pChildWnd->hWnd, &pChildWnd->left, IDW_TREE_LEFT);
        CreateListWnd(pChildWnd->hWnd, &pChildWnd->right, IDW_TREE_RIGHT, pChildWnd->szPath);
        //create_tree_window(pChildWnd->hWnd, &pChildWnd->left, IDW_TREE_LEFT, IDW_HEADER_LEFT, pChildWnd->szPath);
        //create_list_window(pChildWnd->hWnd, &pChildWnd->right, IDW_TREE_RIGHT, IDW_HEADER_RIGHT);
        return 0;
		break;
    case WM_PAINT:
        OnPaint(hWnd, pChildWnd);
        return 0;
	case WM_NCDESTROY:
//		free_child_window(pChildWnd);
		SetWindowLong(hWnd, GWL_USERDATA, 0);
		break;
	case WM_SETCURSOR:
		if (LOWORD(lParam) == HTCLIENT) {
			POINT pt;
			GetCursorPos(&pt);
			ScreenToClient(hWnd, &pt);
			if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
				SetCursor(LoadCursor(0, IDC_SIZEWE));
				return TRUE;
			}
		}
		goto def;
	case WM_LBUTTONDOWN: {
		RECT rt;
		int x = LOWORD(lParam);
		GetClientRect(hWnd, &rt);
		if (x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
			last_split = pChildWnd->nSplitPos;
			draw_splitbar(hWnd, last_split);
			SetCapture(hWnd);
		}
		break;}

	case WM_LBUTTONUP:
		if (GetCapture() == hWnd) {
			RECT rt;
			int x = LOWORD(lParam);
			draw_splitbar(hWnd, last_split);
			last_split = -1;
			GetClientRect(hWnd, &rt);
			pChildWnd->nSplitPos = x;
			ResizeWnd(pChildWnd, rt.right, rt.bottom);
			ReleaseCapture();
		}
		break;

	case WM_CAPTURECHANGED:
		if (GetCapture()==hWnd && last_split>=0)
			draw_splitbar(hWnd, last_split);
		break;

    case WM_KEYDOWN:
		if (wParam == VK_ESCAPE)
			if (GetCapture() == hWnd) {
				RECT rt;
				draw_splitbar(hWnd, last_split);
				GetClientRect(hWnd, &rt);
                ResizeWnd(pChildWnd, rt.right, rt.bottom);
				last_split = -1;
				ReleaseCapture();
				SetCursor(LoadCursor(0, IDC_ARROW));
			}
		break;

	case WM_MOUSEMOVE:
		if (GetCapture() == hWnd) {
			RECT rt;
			int x = LOWORD(lParam);
			HDC hdc = GetDC(hWnd);
			GetClientRect(hWnd, &rt);
			rt.left = last_split-SPLIT_WIDTH/2;
			rt.right = last_split+SPLIT_WIDTH/2+1;
			InvertRect(hdc, &rt);
			last_split = x;
			rt.left = x-SPLIT_WIDTH/2;
			rt.right = x+SPLIT_WIDTH/2+1;
			InvertRect(hdc, &rt);
			ReleaseDC(hWnd, hdc);
		}
		break;

	case WM_SETFOCUS:
		SetCurrentDirectory(pChildWnd->szPath);
		SetFocus(pChildWnd->nFocusPanel? pChildWnd->right.hWnd: pChildWnd->left.hWnd);
		break;

	case WM_DISPATCH_COMMAND:
        if (_CmdWndProc(hWnd, message, wParam, lParam)) break;
        if (1) {
            return SendMessage(pChildWnd->right.hWnd, message, wParam, lParam);
        } else {
            return SendMessage(pChildWnd->left.hWnd, message, wParam, lParam);
        }
		break;

	case WM_COMMAND:
        if (_CmdWndProc(hWnd, message, wParam, lParam)) break;
			return DefMDIChildProc(hWnd, message, wParam, lParam);

//        if (LOWORD(wParam) > ID_CMD_FIRST && LOWORD(wParam) < ID_CMD_LAST) {
//            if (!SendMessage(pChildWnd->right.hWnd, message, wParam, lParam)) {
//                return DefMDIChildProc(hWnd, message, wParam, lParam);
//            }
//        } else {
//    		return _CmdWndProc(hWnd, message, wParam, lParam);
//        }
		break;
	case WM_NOTIFY:
        {
        int idCtrl = (int)wParam; 
		//NMHDR* pnmh = (NMHDR*)lParam;
		//return pane_notify(pnmh->idFrom==IDW_HEADER_LEFT? &pChildWnd->left: &pChildWnd->right, pnmh);
        if ((int)wParam == IDW_TREE_LEFT) {
            if ((((LPNMHDR)lParam)->code) == TVN_SELCHANGED) {
                Entry* entry = (Entry*)((NMTREEVIEW*)lParam)->itemNew.lParam;
                if (entry != NULL) {
                    //RefreshList(pChildWnd->right.hWnd, entry);
                    //void set_curdir(ChildWnd* child, Entry* entry)
                    set_curdir(pChildWnd, entry);
                }
            }
            if (!SendMessage(pChildWnd->left.hWnd, message, wParam, lParam)) {
                return DefMDIChildProc(hWnd, message, wParam, lParam);
            }
        } else
        if ((int)wParam == IDW_TREE_RIGHT) {
            if (!SendMessage(pChildWnd->right.hWnd, message, wParam, lParam)) {
                return DefMDIChildProc(hWnd, message, wParam, lParam);
            }
        }
        }
        break;

	case WM_SIZE:
        if (wParam != SIZE_MINIMIZED && pChildWnd != NULL) {
	    	ResizeWnd(pChildWnd, LOWORD(lParam), HIWORD(lParam));
        }
        // fall through
    default: def:
		return DefMDIChildProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

ATOM RegisterChildWnd(HINSTANCE hInstance, int res_id)
{
	WNDCLASSEX wcFrame = {
		sizeof(WNDCLASSEX),
		CS_HREDRAW | CS_VREDRAW/*style*/,
		FrameWndProc,
		0/*cbClsExtra*/,
		0/*cbWndExtra*/,
		hInstance,
		LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINFILE)),
		LoadCursor(0, IDC_ARROW),
		0/*hbrBackground*/,
		0/*lpszMenuName*/,
		szFrameClass,
		(HICON)LoadImage(hInstance, MAKEINTRESOURCE(IDI_WINFILE), IMAGE_ICON,
			GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED)
	};
	ATOM hFrameWndClass = RegisterClassEx(&wcFrame); // register frame window class
    return hFrameWndClass;
}