| 180 |
if @buffer.lines[@cursor.row].size < @cursor.column |
if @buffer.lines[@cursor.row].size < @cursor.column |
| 181 |
@cursor.column = @buffer.lines[@cursor.row].size |
@cursor.column = @buffer.lines[@cursor.row].size |
| 182 |
end |
end |
|
end |
|
| 183 |
|
|
| 184 |
refresh_cursor |
refresh_cursor |
| 185 |
|
end |
| 186 |
end |
end |
| 187 |
|
|
| 188 |
#Move the cursor to the previous line. |
#Move the cursor to the previous line. |
| 198 |
if @buffer.lines[@cursor.row].size < @cursor.column |
if @buffer.lines[@cursor.row].size < @cursor.column |
| 199 |
@cursor.column = @buffer.lines[@cursor.row].size |
@cursor.column = @buffer.lines[@cursor.row].size |
| 200 |
end |
end |
| 201 |
|
|
| 202 |
|
refresh_cursor |
| 203 |
|
end |
| 204 |
|
end |
| 205 |
|
|
| 206 |
|
#Remove a character just in front of the cursor and move the cursor |
| 207 |
|
#backward. |
| 208 |
|
# |
| 209 |
|
#=== Warning |
| 210 |
|
#This method *MUST* *NOT* be overrided in derived classes. |
| 211 |
|
def backspace |
| 212 |
|
if @cursor.column == 0 && @cursor.row == 0 |
| 213 |
|
#ToDo: Alert that the cursor is at the begin of the current buffer. |
| 214 |
|
@view.beep |
| 215 |
|
elsif @cursor.column == 0 |
| 216 |
|
#Concatenate the current lien into the previous line. |
| 217 |
|
current_line = @buffer.lines[@cursor.row] |
| 218 |
|
prev_line_size = @buffer.lines[@cursor.row - 1].size |
| 219 |
|
|
| 220 |
|
@buffer.lines[@cursor.row - 1] << current_line |
| 221 |
|
@buffer.lines.delete_at(@cursor.row) |
| 222 |
|
|
| 223 |
|
@cursor.column = prev_line_size |
| 224 |
|
@cursor.row -= 1 |
| 225 |
|
|
| 226 |
|
refresh |
| 227 |
|
else |
| 228 |
|
line = @buffer.lines[@cursor.row] |
| 229 |
|
@buffer.lines[@cursor.row] = |
| 230 |
|
line[0, @cursor.column - 1] + line[@cursor.column .. -1] |
| 231 |
|
@cursor.column -= 1 |
| 232 |
|
refresh |
| 233 |
end |
end |
| 234 |
|
end |
| 235 |
|
|
| 236 |
refresh_cursor |
#Remove a character beneath the cursor. |
| 237 |
|
# |
| 238 |
|
#=== Warning |
| 239 |
|
#This method *MUST* *NOT* be overrided in derived classes. |
| 240 |
|
def delete |
| 241 |
|
if @cursor.column >= @buffer.lines[@cursor.row].size && |
| 242 |
|
@cursor.row == (@buffer.lines.size - 1) |
| 243 |
|
#ToDo: Alert that the cursor is at the end of this buffer. |
| 244 |
|
@view.beep |
| 245 |
|
elsif @cursor.column >= @buffer.lines[@cursor.row].size |
| 246 |
|
#Concatenate the next line behind the current line. |
| 247 |
|
@buffer.lines[@cursor.row] << @buffer.lines[@cursor.row + 1] |
| 248 |
|
@buffer.lines.delete_at(@cursor.row + 1) |
| 249 |
|
refresh |
| 250 |
|
else |
| 251 |
|
line = @buffer.lines[@cursor.row] |
| 252 |
|
@buffer.lines[@cursor.row] = |
| 253 |
|
line[0, @cursor.column] + line[@cursor.column + 1 .. -1] |
| 254 |
|
refresh |
| 255 |
|
end |
| 256 |
end |
end |
| 257 |
|
|
| 258 |
#Redraw the cursor. |
#Redraw the cursor. |
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