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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";
- function throwDeltaError(delta, errorText){
- console.log("Invalid Delta:", delta);
- throw "Invalid Delta: " + errorText;
- }
- function positionInDocument(docLines, position) {
- return position.row >= 0 && position.row < docLines.length &&
- position.column >= 0 && position.column <= docLines[position.row].length;
- }
- function validateDelta(docLines, delta) {
- // Validate action string.
- if (delta.action != "insert" && delta.action != "remove")
- throwDeltaError(delta, "delta.action must be 'insert' or 'remove'");
-
- // Validate lines type.
- if (!(delta.lines instanceof Array))
- throwDeltaError(delta, "delta.lines must be an Array");
- // Validate range type.
- if (!delta.start || !delta.end)
- throwDeltaError(delta, "delta.start/end must be an present");
- // Validate that the start point is contained in the document.
- var start = delta.start;
- if (!positionInDocument(docLines, delta.start))
- throwDeltaError(delta, "delta.start must be contained in document");
-
- // Validate that the end point is contained in the document (remove deltas only).
- var end = delta.end;
- if (delta.action == "remove" && !positionInDocument(docLines, end))
- throwDeltaError(delta, "delta.end must contained in document for 'remove' actions");
-
- // Validate that the .range size matches the .lines size.
- var numRangeRows = end.row - start.row;
- var numRangeLastLineChars = (end.column - (numRangeRows == 0 ? start.column : 0));
- if (numRangeRows != delta.lines.length - 1 || delta.lines[numRangeRows].length != numRangeLastLineChars)
- throwDeltaError(delta, "delta.range must match delta lines");
- }
- exports.applyDelta = function(docLines, delta, doNotValidate) {
- // disabled validation since it breaks autocompletion popup
- // if (!doNotValidate)
- // validateDelta(docLines, delta);
-
- var row = delta.start.row;
- var startColumn = delta.start.column;
- var line = docLines[row] || "";
- switch (delta.action) {
- case "insert":
- var lines = delta.lines;
- if (lines.length === 1) {
- docLines[row] = line.substring(0, startColumn) + delta.lines[0] + line.substring(startColumn);
- } else {
- var args = [row, 1].concat(delta.lines);
- docLines.splice.apply(docLines, args);
- docLines[row] = line.substring(0, startColumn) + docLines[row];
- docLines[row + delta.lines.length - 1] += line.substring(startColumn);
- }
- break;
- case "remove":
- var endColumn = delta.end.column;
- var endRow = delta.end.row;
- if (row === endRow) {
- docLines[row] = line.substring(0, startColumn) + line.substring(endColumn);
- } else {
- docLines.splice(
- row, endRow - row + 1,
- line.substring(0, startColumn) + docLines[endRow].substring(endColumn)
- );
- }
- break;
- }
- }
- });
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