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319 lines
9.1 KiB
JavaScript
319 lines
9.1 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Ajax.org Code Editor (ACE).
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*
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* The Initial Developer of the Original Code is
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* Ajax.org B.V.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Fabian Jakobs <fabian AT ajax DOT org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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"use strict";
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var Range = function(startRow, startColumn, endRow, endColumn) {
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this.start = {
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row: startRow,
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column: startColumn
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};
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this.end = {
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row: endRow,
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column: endColumn
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};
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};
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(function() {
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this.isEequal = function(range) {
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return this.start.row == range.start.row &&
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this.end.row == range.end.row &&
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this.start.column == range.start.column &&
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this.end.column == range.end.column
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};
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this.toString = function() {
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return ("Range: [" + this.start.row + "/" + this.start.column +
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"] -> [" + this.end.row + "/" + this.end.column + "]");
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};
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this.contains = function(row, column) {
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return this.compare(row, column) == 0;
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};
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/**
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* Compares this range (A) with another range (B), where B is the passed in
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* range.
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*
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* Return values:
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* -2: (B) is infront of (A) and doesn't intersect with (A)
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* -1: (B) begins before (A) but ends inside of (A)
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* 0: (B) is completly inside of (A) OR (A) is complety inside of (B)
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* +1: (B) begins inside of (A) but ends outside of (A)
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* +2: (B) is after (A) and doesn't intersect with (A)
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*
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* 42: FTW state: (B) ends in (A) but starts outside of (A)
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*/
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this.compareRange = function(range) {
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var cmp,
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end = range.end,
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start = range.start;
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cmp = this.compare(end.row, end.column);
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if (cmp == 1) {
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cmp = this.compare(start.row, start.column);
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if (cmp == 1) {
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return 2;
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} else if (cmp == 0) {
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return 1;
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} else {
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return 0;
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}
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} else if (cmp == -1) {
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return -2;
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} else {
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cmp = this.compare(start.row, start.column);
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if (cmp == -1) {
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return -1;
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} else if (cmp == 1) {
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return 42;
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} else {
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return 0;
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}
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}
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}
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this.comparePoint = function(p) {
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return this.compare(p.row, p.column);
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}
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this.containsRange = function(range) {
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return this.comparePoint(range.start) == 0 && this.comparePoint(range.end) == 0;
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}
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this.isEnd = function(row, column) {
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return this.end.row == row && this.end.column == column;
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}
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this.isStart = function(row, column) {
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return this.start.row == row && this.start.column == column;
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}
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this.setStart = function(row, column) {
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if (typeof row == "object") {
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this.start.column = row.column;
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this.start.row = row.row;
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} else {
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this.start.row = row;
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this.start.column = column;
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}
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}
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this.setEnd = function(row, column) {
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if (typeof row == "object") {
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this.end.column = row.column;
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this.end.row = row.row;
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} else {
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this.end.row = row;
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this.end.column = column;
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}
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}
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this.inside = function(row, column) {
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if (this.compare(row, column) == 0) {
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if (this.isEnd(row, column) || this.isStart(row, column)) {
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return false;
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} else {
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return true;
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}
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}
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return false;
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}
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this.insideStart = function(row, column) {
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if (this.compare(row, column) == 0) {
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if (this.isEnd(row, column)) {
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return false;
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} else {
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return true;
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}
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}
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return false;
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}
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this.insideEnd = function(row, column) {
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if (this.compare(row, column) == 0) {
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if (this.isStart(row, column)) {
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return false;
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} else {
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return true;
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}
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}
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return false;
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}
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this.compare = function(row, column) {
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if (!this.isMultiLine()) {
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if (row === this.start.row) {
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return column < this.start.column ? -1 : (column > this.end.column ? 1 : 0);
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};
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}
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if (row < this.start.row)
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return -1;
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if (row > this.end.row)
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return 1;
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if (this.start.row === row)
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return column >= this.start.column ? 0 : -1;
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if (this.end.row === row)
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return column <= this.end.column ? 0 : 1;
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return 0;
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};
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/**
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* Like .compare(), but if isStart is true, return -1;
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*/
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this.compareStart = function(row, column) {
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if (this.start.row == row && this.start.column == column) {
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return -1;
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} else {
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return this.compare(row, column);
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}
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}
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/**
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* Like .compare(), but if isEnd is true, return 1;
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*/
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this.compareEnd = function(row, column) {
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if (this.end.row == row && this.end.column == column) {
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return 1;
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} else {
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return this.compare(row, column);
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}
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}
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this.compareInside = function(row, column) {
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if (this.end.row == row && this.end.column == column) {
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return 1;
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} else if (this.start.row == row && this.start.column == column) {
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return -1;
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} else {
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return this.compare(row, column);
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}
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}
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this.clipRows = function(firstRow, lastRow) {
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if (this.end.row > lastRow) {
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var end = {
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row: lastRow+1,
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column: 0
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};
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}
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if (this.start.row > lastRow) {
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var start = {
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row: lastRow+1,
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column: 0
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};
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}
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if (this.start.row < firstRow) {
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var start = {
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row: firstRow,
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column: 0
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};
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}
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if (this.end.row < firstRow) {
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var end = {
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row: firstRow,
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column: 0
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};
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}
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return Range.fromPoints(start || this.start, end || this.end);
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};
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this.extend = function(row, column) {
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var cmp = this.compare(row, column);
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if (cmp == 0)
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return this;
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else if (cmp == -1)
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var start = {row: row, column: column};
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else
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var end = {row: row, column: column};
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return Range.fromPoints(start || this.start, end || this.end);
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};
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this.isEmpty = function() {
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return (this.start.row == this.end.row && this.start.column == this.end.column);
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};
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this.isMultiLine = function() {
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return (this.start.row !== this.end.row);
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};
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this.clone = function() {
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return Range.fromPoints(this.start, this.end);
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};
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this.collapseRows = function() {
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if (this.end.column == 0)
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return new Range(this.start.row, 0, Math.max(this.start.row, this.end.row-1), 0)
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else
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return new Range(this.start.row, 0, this.end.row, 0)
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};
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this.toScreenRange = function(session) {
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var screenPosStart =
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session.documentToScreenPosition(this.start);
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var screenPosEnd =
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session.documentToScreenPosition(this.end);
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return new Range(
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screenPosStart.row, screenPosStart.column,
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screenPosEnd.row, screenPosEnd.column
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);
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};
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}).call(Range.prototype);
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Range.fromPoints = function(start, end) {
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return new Range(start.row, start.column, end.row, end.column);
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};
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exports.Range = Range;
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});
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