big-moving.ru/api/soft/ajaxorg/lib/ace/edit_session/fold.js

141 lines
4.7 KiB
JavaScript
Executable File

/* ***** 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);
}
});