mirror of
https://github.com/Jermolene/TiddlyWiki5
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44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
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// A number of additional default bindings that are too obscure to
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// include in the core codemirror.js file.
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(function() {
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"use strict";
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var Pos = CodeMirror.Pos;
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function moveLines(cm, start, end, dist) {
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if (!dist || start > end) return 0;
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var from = cm.clipPos(Pos(start, 0)), to = cm.clipPos(Pos(end));
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var text = cm.getRange(from, to);
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if (start <= cm.firstLine())
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cm.replaceRange("", from, Pos(to.line + 1, 0));
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else
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cm.replaceRange("", Pos(from.line - 1), to);
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var target = from.line + dist;
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if (target <= cm.firstLine()) {
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cm.replaceRange(text + "\n", Pos(target, 0));
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return cm.firstLine() - from.line;
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} else {
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var targetPos = cm.clipPos(Pos(target - 1));
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cm.replaceRange("\n" + text, targetPos);
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return targetPos.line + 1 - from.line;
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}
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}
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function moveSelectedLines(cm, dist) {
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var head = cm.getCursor("head"), anchor = cm.getCursor("anchor");
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cm.operation(function() {
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var moved = moveLines(cm, Math.min(head.line, anchor.line), Math.max(head.line, anchor.line), dist);
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cm.setSelection(Pos(anchor.line + moved, anchor.ch), Pos(head.line + moved, head.ch));
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});
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}
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CodeMirror.commands.moveLinesUp = function(cm) { moveSelectedLines(cm, -1); };
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CodeMirror.commands.moveLinesDown = function(cm) { moveSelectedLines(cm, 1); };
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CodeMirror.keyMap["default"]["Alt-Up"] = "moveLinesUp";
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CodeMirror.keyMap["default"]["Alt-Down"] = "moveLinesDown";
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})();
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