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keep folds while dragging text inside the editor

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nightwing 2013-02-24 17:23:34 +04:00
commit a9dbdaebb4
1 changed files with 33 additions and 21 deletions
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54
lib/ace/edit_session.js
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@ -1288,32 +1288,44 @@ var EditSession = function(text, mode) {
*
*
**/
this.moveText = function(fromRange, toPosition) {
this.moveText = function(fromRange, toPosition, copy) {
var text = this.getTextRange(fromRange);
this.remove(fromRange);
var folds = this.getFoldsInRange(fromRange);
var toRow = toPosition.row;
var toColumn = toPosition.column;
// Make sure to update the insert location, when text is removed in
// front of the chosen point of insertion.
if (!fromRange.isMultiLine() && fromRange.start.row == toRow &&
fromRange.end.column < toColumn)
toColumn -= text.length;
if (fromRange.isMultiLine() && fromRange.end.row < toRow) {
var lines = this.doc.$split(text);
toRow -= lines.length - 1;
var toRange = Range.fromPoints(toPosition, toPosition);
if (!copy) {
this.remove(fromRange);
var rowDiff = fromRange.start.row - fromRange.end.row;
var collDiff = rowDiff ? -fromRange.end.column : fromRange.start.column - fromRange.end.column;
if (collDiff) {
if (toRange.start.row == fromRange.end.row && toRange.start.column > fromRange.end.column)
toRange.start.column += collDiff;
if (toRange.end.row == fromRange.end.row && toRange.end.column > fromRange.end.column)
toRange.end.column += collDiff;
}
if (rowDiff && toRange.start.row >= fromRange.end.row) {
toRange.start.row += rowDiff;
toRange.end.row += rowDiff;
}
}
var endRow = toRow + fromRange.end.row - fromRange.start.row;
var endColumn = fromRange.isMultiLine() ?
fromRange.end.column :
toColumn + fromRange.end.column - fromRange.start.column;
var toRange = new Range(toRow, toColumn, endRow, endColumn);
this.insert(toRange.start, text);
if (folds.length) {
var oldStart = fromRange.start;
var newStart = toRange.start;
var rowDiff = newStart.row - oldStart.row;
var collDiff = newStart.column - oldStart.column;
this.addFolds(folds.map(function(x) {
x = x.clone();
if (x.start.row == oldStart.row)
x.start.column += collDiff;
if (x.end.row == oldStart.row)
x.end.column += collDiff;
x.start.row += rowDiff;
x.end.row += rowDiff;
return x;
}));
}
return toRange;
};