Exemplo n.º 1
0
// handles keyboard input
func inputHandler(inputWin *gc.Window, stdscr *gc.Window, contactsMenuWin *gc.Window, contactMenu *gc.Menu, msgWin *gc.Window) {
	var NLlocate = map[int]newLine{}
	var c gc.Char
	var rawInput gc.Key
	max_y, max_x := inputWin.MaxYX()
	for {
		rawInput = inputWin.GetChar()
		c = gc.Char(rawInput)
		// debugLog.Println(rawInput)
		// debugLog.Println(c)

		//Escape to Quit
		if c == gc.Char(27) {
			break
		} else if rawInput == gc.KEY_BACKSPACE || c == gc.Char(127) {
			//Delete Key
			y, x := inputWin.CursorYX()
			var del = byte('F')
			if x != 0 {
				inputWin.MoveDelChar(y, x-1)
				del = inputBuffer[placer]
				copy(inputBuffer[placer:len(inputBuffer)-1], inputBuffer[placer+1:])
				inputBuffer = inputBuffer[0 : len(inputBuffer)-1]
				placer--
				if del != byte('\n') && NLlocate[y+scroll]._cursorX > x {
					temp := newLine{NLlocate[y+scroll]._cursorX - 1, NLlocate[y+scroll]._placer - 1}
					NLlocate[y+scroll] = temp
				}
				//debugLog.Println(inputBuffer)
			} else if y != 0 { //when x==0 and y!=0
				inputWin.Move(y-1, max_x-1)
				inputWin.MoveDelChar(y-1, max_x-1)
				del = inputBuffer[placer]
				copy(inputBuffer[placer:len(inputBuffer)-1], inputBuffer[placer+1:])
				inputBuffer = inputBuffer[0 : len(inputBuffer)-1]
				//debugLog.Println(inputBuffer)
				placer--
			}
			if del == byte('\n') {
				inputWin.Erase()
				inputWin.Print(string(inputBuffer))
				inputWin.Move(y-1, NLlocate[y-1+scroll]._cursorX)
				temp, check := NLlocate[y+scroll]
				var temp_cursor = temp._cursorX
				var temp_placer = temp._placer
				if check && NLlocate[y-1+scroll]._cursorX+temp_cursor >= max_x {
					_newLine := newLine{NLlocate[y-1+scroll]._cursorX + temp_cursor - max_x, NLlocate[y+scroll]._placer - 1}
					NLlocate[y+scroll] = _newLine
					delete(NLlocate, y-1)
				} else if check { // check if there are any '\n' this line
					var largest = -1          // if yes, select all '\n' and move
					for i := range NLlocate { // placer by 1 and adjust cursor
						if i >= y+scroll { // accordingly
							if next_nl, ok := NLlocate[i+1]; ok {
								new_nl := newLine{next_nl._cursorX, next_nl._placer - 1}
								NLlocate[i] = new_nl
							}
						}
						if i > largest {
							largest = i
						}
					}
					delete(NLlocate, largest) // delete last map entry
					_newLine := newLine{NLlocate[y-1+scroll]._cursorX + temp_cursor, NLlocate[y-1+scroll]._placer + temp_placer - 1}
					NLlocate[y-1+scroll] = _newLine
				} else {
					delete(NLlocate, y-1+scroll)
				}
			}
		} else if c == gc.KEY_PAGEDOWN {
			//debugLog.Println("HIT DOWN")
			msgWin.Scroll(-10)
			msgWin.Refresh()
			inputWin.Refresh()
		} else if c == gc.KEY_PAGEUP {
			//debugLog.Println("HIT UP")
			msgWin.Scroll(10)
			msgWin.Refresh()
			inputWin.Refresh()
		} else if c == gc.KEY_LEFT {
			y, x := inputWin.CursorYX()
			if x != 0 {
				inputWin.Move(y, x-1)
				placer--
			} else if y != 0 {
				inputWin.Move(y-1, max_x-1)
				placer--
			}
			if len(inputBuffer) > 0 && inputBuffer[placer+1] == byte('\n') {
				inputWin.Move(y-1, NLlocate[y-1+scroll]._cursorX)
			}
		} else if c == gc.KEY_RIGHT {
			y, x := inputWin.CursorYX()
			placer++
			if inputBuffer == nil || placer == len(inputBuffer) {
				inputBuffer = append(inputBuffer, byte(' '))
			}
			if inputBuffer[placer] == byte('\n') || x >= max_x-1 {
				inputWin.Move(y+1, 0)
			} else {
				inputWin.Move(y, x+1)
			}
		} else if c == gc.KEY_UP {
			y, x := inputWin.CursorYX()
			if y == 0 && placer == 0 {
				continue
			} else if y == 0 && scroll > 0 {
				inputWin.Move(0, x)
				inputWin.Scroll(-1)
				scroll -= 1
				if NLlocate[y-2+scroll]._placer != 0 {
					inputWin.Erase()
					inputWin.Print(string(inputBuffer[(NLlocate[y-2+scroll]._placer):]))
				} else if placer-max_x-x > 0 {
					inputWin.Erase()
					inputWin.Print(string(inputBuffer[(placer - x - max_x):]))
				} else {
					inputWin.Erase()
					inputWin.Print(string(inputBuffer))
				}
			}
			if y != 0 {
				inputWin.Move(y-1, x)
				placer -= max_x
				if placer < 0 {
					placer = 0
				}
			}
			if NLlocate[y-1+scroll]._placer != 0 {
				if NLlocate[y-1+scroll]._cursorX < x {
					placer = NLlocate[y-1+scroll]._placer
					inputWin.Move(y-1, NLlocate[y-1+scroll]._cursorX)
				} else {
					placer = NLlocate[y-1+scroll]._placer - (NLlocate[y-1+scroll]._cursorX - x)
				}
			}
		} else if c == gc.KEY_DOWN {
			y, x := inputWin.CursorYX()
			if y != max_y {
				inputWin.Move(y+1, x)
				if NLlocate[y+scroll]._placer == 0 {
					placer += max_x
				} else {
					placer = NLlocate[y+scroll]._placer + x + 1
				}
			} else if y == max_y {
				inputWin.Scroll(1)
				scroll += 1
				inputWin.Move(max_y-1, x)
				if NLlocate[y+scroll]._placer == 0 {
					placer += max_x
				} else {
					placer = NLlocate[y+scroll]._placer + x + 1
				}
			}
			if placer >= len(inputBuffer) {
				for i := len(inputBuffer); i < placer+1; i++ {
					inputBuffer = append(inputBuffer, byte(' '))
				}
			}
		} else if rawInput == gc.KEY_TAB {
			y, x := inputWin.CursorYX()
			gc.Cursor(0)
			escapeHandler := contactsWindowNavigation(contactsMenuWin, contactMenu)
			if escapeHandler == 1 {
				return
			}
			gc.Cursor(1)
			inputWin.Move(y, x)
		} else if rawInput == gc.KEY_RETURN {
			placer = -1
			for i := range NLlocate {
				delete(NLlocate, i)
			}
			sendMsg(inputWin, globalMsgWin)
		} else if rawInput == gc.KEY_SRIGHT {
			y, x := inputWin.CursorYX()
			if inputBuffer == nil || placer == len(inputBuffer)-1 {
				if y == max_y-1 {
					scroll++
				}
				inputWin.Print("\n")
				temp := newLine{x, placer}
				NLlocate[y+scroll] = temp
				placer++
				inputBuffer = append(inputBuffer, byte('\n'))
			} else {
				inputWin.Erase()
				inputBuffer = append(inputBuffer, byte('\n'))
				copy(inputBuffer[placer+1:], inputBuffer[placer:])
				inputBuffer[placer+1] = byte('\n')
				inputWin.Print(string(inputBuffer))
				temp := newLine{x, placer}
				placer++
				nextholder, check := NLlocate[y+1+scroll]
				if check {
					for i := range NLlocate {
						if i == y+scroll {
							_newLine := newLine{NLlocate[i]._cursorX + 1 - x, NLlocate[i]._placer + 1}
							nextholder := NLlocate[i+1]
							_ = nextholder
							NLlocate[i+1] = _newLine
						} else if i > y {
							temp := NLlocate[i+1]
							NLlocate[i+1] = nextholder
							nextholder = temp
						}
					}
				}
				NLlocate[y+scroll] = temp
				inputWin.Move(y+1, 0)
			}
		} else if rawInput == gc.KEY_SLEFT {
		} else {
			y, x := inputWin.CursorYX()
			if inputBuffer == nil || placer == len(inputBuffer)-1 {
				inputWin.Print(string(c))
				inputBuffer = append(inputBuffer, byte(c))
			} else {
				inputWin.Erase()
				inputBuffer = append(inputBuffer, byte(c))
				copy(inputBuffer[placer+1:], inputBuffer[placer:])
				inputBuffer[placer+1] = byte(c)
				inputWin.Print(string(inputBuffer))
				for i := range NLlocate {
					if i > y+scroll {
						tempLine := newLine{NLlocate[i]._cursorX, NLlocate[i]._placer + 1}
						NLlocate[i] = tempLine
					}
				}
				if NLlocate[y+scroll]._cursorX >= x {
					if NLlocate[y+scroll]._cursorX == max_x {
						copy(inputBuffer[NLlocate[y+scroll]._placer:len(inputBuffer)-1], inputBuffer[NLlocate[y+scroll]._placer+1:])
						inputBuffer = inputBuffer[0 : len(inputBuffer)-1]
						delete(NLlocate, y)
					} else {
						temp := newLine{NLlocate[y+scroll]._cursorX + 1, NLlocate[y+scroll]._placer + 1}
						NLlocate[y+scroll] = temp
					}
				}
			}
			placer++
			inputWin.Move(y, x+1)
		}
	}
}