(line, start, dir, byUnit)
| 5896 | // other. This often requires the cursor offset to move more than |
| 5897 | // one unit, in order to visually move one unit. |
| 5898 | function moveVisually(line, start, dir, byUnit) { |
| 5899 | var bidi = getOrder(line); |
| 5900 | if (!bidi) return moveLogically(line, start, dir, byUnit); |
| 5901 | var pos = getBidiPartAt(bidi, start), part = bidi[pos]; |
| 5902 | var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); |
| 5903 | |
| 5904 | for (;;) { |
| 5905 | if (target > part.from && target < part.to) return target; |
| 5906 | if (target == part.from || target == part.to) { |
| 5907 | if (getBidiPartAt(bidi, target) == pos) return target; |
| 5908 | part = bidi[pos += dir]; |
| 5909 | return (dir > 0) == part.level % 2 ? part.to : part.from; |
| 5910 | } else { |
| 5911 | part = bidi[pos += dir]; |
| 5912 | if (!part) return null; |
| 5913 | if ((dir > 0) == part.level % 2) |
| 5914 | target = moveInLine(line, part.to, -1, byUnit); |
| 5915 | else |
| 5916 | target = moveInLine(line, part.from, 1, byUnit); |
| 5917 | } |
| 5918 | } |
| 5919 | } |
| 5920 | |
| 5921 | function moveLogically(line, start, dir, byUnit) { |
| 5922 | var target = start + dir; |
no test coverage detected