| 2356 | } |
| 2357 | |
| 2358 | function skipAtomic(doc, pos, bias, mayClear) { |
| 2359 | var flipped = false, curPos = pos; |
| 2360 | var dir = bias || 1; |
| 2361 | doc.cantEdit = false; |
| 2362 | search: for (;;) { |
| 2363 | var line = getLine(doc, curPos.line), toClear; |
| 2364 | if (line.markedSpans) { |
| 2365 | for (var i = 0; i < line.markedSpans.length; ++i) { |
| 2366 | var sp = line.markedSpans[i], m = sp.marker; |
| 2367 | if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && |
| 2368 | (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { |
| 2369 | if (mayClear && m.clearOnEnter) { |
| 2370 | (toClear || (toClear = [])).push(m); |
| 2371 | continue; |
| 2372 | } else if (!m.atomic) continue; |
| 2373 | var newPos = m.find()[dir < 0 ? "from" : "to"]; |
| 2374 | if (posEq(newPos, curPos)) { |
| 2375 | newPos.ch += dir; |
| 2376 | if (newPos.ch < 0) { |
| 2377 | if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); |
| 2378 | else newPos = null; |
| 2379 | } else if (newPos.ch > line.text.length) { |
| 2380 | if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); |
| 2381 | else newPos = null; |
| 2382 | } |
| 2383 | if (!newPos) { |
| 2384 | if (flipped) { |
| 2385 | // Driven in a corner -- no valid cursor position found at all |
| 2386 | // -- try again *with* clearing, if we didn't already |
| 2387 | if (!mayClear) return skipAtomic(doc, pos, bias, true); |
| 2388 | // Otherwise, turn off editing until further notice, and return the start of the doc |
| 2389 | doc.cantEdit = true; |
| 2390 | return Pos(doc.first, 0); |
| 2391 | } |
| 2392 | flipped = true; newPos = pos; dir = -dir; |
| 2393 | } |
| 2394 | } |
| 2395 | curPos = newPos; |
| 2396 | continue search; |
| 2397 | } |
| 2398 | } |
| 2399 | if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear(); |
| 2400 | } |
| 2401 | return curPos; |
| 2402 | } |
| 2403 | } |
| 2404 | |
| 2405 | // SCROLLING |
| 2406 | |