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added AttributeManager, ChangesetUtils

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Matthias Bartelmeß 2012-04-05 00:50:04 +02:00
parent 6c647baa02
commit 23cda77b65
4 changed files with 220 additions and 123 deletions
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60
src/static/js/ChangesetUtils.js Normal file
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/**
* This module contains several helper Functions to build Changesets
* based on a SkipList
*/
/**
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
exports.buildRemoveRange = function(rep, builder, start, end)
{
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
var endLineOffset = rep.lines.offsetOfIndex(end[0]);
if (end[0] > start[0])
{
builder.remove(endLineOffset - startLineOffset - start[1], end[0] - start[0]);
builder.remove(end[1]);
}
else
{
builder.remove(end[1] - start[1]);
}
}
exports.buildKeepRange = function(rep, builder, start, end, attribs, pool)
{
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
var endLineOffset = rep.lines.offsetOfIndex(end[0]);
if (end[0] > start[0])
{
builder.keep(endLineOffset - startLineOffset - start[1], end[0] - start[0], attribs, pool);
builder.keep(end[1], 0, attribs, pool);
}
else
{
builder.keep(end[1] - start[1], 0, attribs, pool);
}
}
exports.buildKeepToStartOfRange = function(rep, builder, start)
{
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
builder.keep(startLineOffset, start[0]);
builder.keep(start[1]);
}