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- /* ***** BEGIN LICENSE BLOCK *****
- * Distributed under the BSD license:
- *
- * Copyright (c) 2010, Ajax.org B.V.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Ajax.org B.V. nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * ***** END LICENSE BLOCK ***** */
- define(function(require, exports, module) {
- "use strict";
- var Range = require("../range").Range;
- var RangeList = require("../range_list").RangeList;
- var oop = require("../lib/oop")
- /*
- * Simple fold-data struct.
- **/
- var Fold = exports.Fold = function(range, placeholder) {
- this.foldLine = null;
- this.placeholder = placeholder;
- this.range = range;
- this.start = range.start;
- this.end = range.end;
- this.sameRow = range.start.row == range.end.row;
- this.subFolds = this.ranges = [];
- };
- oop.inherits(Fold, RangeList);
- (function() {
- this.toString = function() {
- return '"' + this.placeholder + '" ' + this.range.toString();
- };
- this.setFoldLine = function(foldLine) {
- this.foldLine = foldLine;
- this.subFolds.forEach(function(fold) {
- fold.setFoldLine(foldLine);
- });
- };
- this.clone = function() {
- var range = this.range.clone();
- var fold = new Fold(range, this.placeholder);
- this.subFolds.forEach(function(subFold) {
- fold.subFolds.push(subFold.clone());
- });
- fold.collapseChildren = this.collapseChildren;
- return fold;
- };
- this.addSubFold = function(fold) {
- if (this.range.isEqual(fold))
- return;
- if (!this.range.containsRange(fold))
- throw new Error("A fold can't intersect already existing fold" + fold.range + this.range);
- // transform fold to local coordinates
- consumeRange(fold, this.start);
- var row = fold.start.row, column = fold.start.column;
- for (var i = 0, cmp = -1; i < this.subFolds.length; i++) {
- cmp = this.subFolds[i].range.compare(row, column);
- if (cmp != 1)
- break;
- }
- var afterStart = this.subFolds[i];
- if (cmp == 0)
- return afterStart.addSubFold(fold);
- // cmp == -1
- var row = fold.range.end.row, column = fold.range.end.column;
- for (var j = i, cmp = -1; j < this.subFolds.length; j++) {
- cmp = this.subFolds[j].range.compare(row, column);
- if (cmp != 1)
- break;
- }
- var afterEnd = this.subFolds[j];
- if (cmp == 0)
- throw new Error("A fold can't intersect already existing fold" + fold.range + this.range);
- var consumedFolds = this.subFolds.splice(i, j - i, fold);
- fold.setFoldLine(this.foldLine);
- return fold;
- };
-
- this.restoreRange = function(range) {
- return restoreRange(range, this.start);
- };
- }).call(Fold.prototype);
- function consumePoint(point, anchor) {
- point.row -= anchor.row;
- if (point.row == 0)
- point.column -= anchor.column;
- }
- function consumeRange(range, anchor) {
- consumePoint(range.start, anchor);
- consumePoint(range.end, anchor);
- }
- function restorePoint(point, anchor) {
- if (point.row == 0)
- point.column += anchor.column;
- point.row += anchor.row;
- }
- function restoreRange(range, anchor) {
- restorePoint(range.start, anchor);
- restorePoint(range.end, anchor);
- }
- });
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