Final.asm

.MODEL SMALL
.DATA
    
    msg db "EDITOR PROJECT"
    msg1 db "  File   Help                                                                   "
    msg1end db 0
    msg2 db "File   ",0ah,0dh
         db "Open       CTRL+O",0ah,0dh
         db "Save       CTRL+S",0ah,0dh
         db "Delete     CTRL+D",0ah,0dh
         db "Exit(ESC)  CTRL+E",0ah,0dh
    msg2end db 0
    
    
    mystack db ?
        col db ?
        column db 0
        row db 1
        select_buffer db 1000 dup(0) ; a variable to store the data selected
    select_buffer_end db 0
    select_buffer_length equ 1000 ; the buffer length
    scan_code db 0
    temp_char db 0
    mouse_temp_char db 0
    filename db "Results.txt",0
    handle  dw ?
    
    file_error db "Erorr: couldn't open the file."
    file_error_end db "0$"
    
    file_buffer db 1000 dup(0)
    file_buffer_length equ 1000
    
    
.STACK 
    dw 128 dup(0)

.code
    segment code
    assume cs:code
    include proc.inc
    
      
    main proc far
        mov ax, @data
        mov ds, ax
        mov es,ax
        push si
        push dx
        push cx
        push bx
        push ax
        
        mov si, offset file_buffer ; Initialize SI to point to the buffer
        mov cx, file_buffer_length ; Set the maximum number of characters to read
        
        ;setting the screen to 80x25 text mode
        mov ah,0h
        mov al, 03h
        int 10h
        
        ; set cursor shape
        mov ah,2
        mov ch, 0
        mov cl, 7
        int 10h
        
        ; set cursor position
        mov dh, 0 ;row
        mov dl,3  ; column
        mov bh, 0 ; page
        mov ah, 2
        int 10h
      
        ;code start
        
        ;print the first line
        mov al,1
        mov bh, 0
        mov bl, 01001111b
        mov cx, offset msg1end - offset msg1
        mov dl,0
        mov dh, 0
        push ds
        pop es
        mov bp, offset msg1
        mov ah,13h
        int 10h
        
        ;Mouse initialization
        ;int 33h
        ;It gets mouse status and position of it's buttons
        ;left button -> bx = 1
        ;right button -> bx = 2
        ;both buttons -> bx = 3
        mouse_check proc 
     
        
         mov ax,3
         int 33h
         cmp bx,1

         je mymouse_bridge2

         ret
        endp mouse_check
        
        
        wait_for_key:
         mov ax,0
         int 33h
        input_loop:
        ; initializing the mouse and checking if the left button is pressed
        
        call mouse_check
        
         ; getting input from the keyboard
         mov ah,10h
         int 16h
        
        cmp al, 13h
        je check_for_save
           

       check_for_arrow:
        call arrowcheck ;check for arrow
        cmp ax, 1
        je input_loop
        cmp al, 8 ;see if it is backspace
        je backspace
        jne newline
        
       check_for_save:
        call  save_file_Proc;check for arrow
        jmp input_loop
        

        mymouse_bridge2:
        jmp mymouse
        wait_for_key_bridge:
            jmp wait_for_key
        input_loop_bridge:
            jmp input_loop
            
      backspace:
        ; set  cursor position back
        mov ah,02h
        mov dh,row ; set the row
        dec column ; decrement the column to backa  column (move right)
        mov dl,column ; set the column
        mov bh,0
        int 10h
        ;print space
        mov al, ' '
        mov ah,0ah
        mov cx,1
        mov bh,0
        int 10h
        cmp column, 0
        jne input_loop
        back_line:
        ; move the cursor position to the end of the row above
            dec row ; decrement the row to move up
            mov column, 80 ;  the screen is 80x25 so the last screen colum is 80
            mov ah,02h
            mov dh,row
            mov dl,column
            mov bh,0
            int 10h
        jmp input_loop
            
        ; check if at start of row

        newline:
        ; check if the enter the key press
        cmp al,13
        jne print
        ; set  cursor position down a row
        mov ah,02h
        inc row
        mov dh,row
        mov column, 0
        mov dl,column
        mov bh,0
        int 10h
        jmp input_loop
        mymouse_bridge:
            jmp mymouse
        input_loop_bridge2:
            jmp input_loop_bridge
        ; print character
       print:
        mov [si], al
        inc si
        mov ah,0ah
        mov cx,1
        mov bh,0
        int 10h 
        ; set cursor position one column to the right every time
        mov ah,02h
        mov dh,row
        inc column
        mov dl,column
        mov bh,0
        int 10h
        cmp column,80
        jne checkESC
        reset_column:
            mov column,0
            inc row
      checkESC:
        cmp al, 27 ;check if ESC is pressed
        je exit
        jmp input_loop_bridge2
       
       mymouse:

        mov al,1
        mov bh, 0
        mov bl, 01001111b
        mov cx, offset msg2end - offset msg2
        mov dl,0
        mov dh, 0
        push ds
        pop es
        mov bp, offset msg2
        mov ah,13h
        int 10h
        jmp input_loop_bridge
        
        ;code end
        exit:
        call save_file_proc
        
        mov ah, 1
        int 21h; wait for a key input
        
        
        mov ah,4ch
        int 21h
        
        main endp
   end main