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273 lines
8.9 KiB
JavaScript
273 lines
8.9 KiB
JavaScript
/* vim:ts=4:sts=4:sw=4:
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* ***** 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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* Julian Viereck <julian DOT viereck AT gmail DOT com>
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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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var Range = require("ace/range").Range;
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/**
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* If the an array is passed in, the folds are expected to be sorted already.
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*/
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function FoldLine(foldData, folds) {
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this.foldData = foldData;
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if (Array.isArray(folds)) {
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this.folds = folds;
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} else {
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folds = this.folds = [ folds ];
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}
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var last = folds[folds.length - 1]
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this.range = new Range(folds[0].start.row, folds[0].start.column,
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last.end.row, last.end.column);
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this.start = this.range.start;
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this.end = this.range.end;
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this.folds.forEach(function(fold) {
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fold.setFoldLine(this);
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}, this);
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}
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(function() {
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/**
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* Note: This doesn't update wrapData!
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*/
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this.shiftRow = function(shift) {
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this.start.row += shift;
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this.end.row += shift;
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this.folds.forEach(function(fold) {
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fold.start.row += shift;
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fold.end.row += shift;
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});
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}
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this.addFold = function(fold) {
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if (fold.sameRow) {
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if (fold.start.row < this.startRow || fold.endRow > this.endRow) {
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throw "Can't add a fold to this FoldLine as it has no connection";
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}
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this.folds.push(fold);
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this.folds.sort(function(a, b) {
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return -a.range.compareEnd(b.start.row, b.start.column);
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});
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if (this.range.compareEnd(fold.start.row, fold.start.column) > 0) {
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this.end.row = fold.end.row;
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this.end.column = fold.end.column;
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} else if (this.range.compareStart(fold.end.row, fold.end.column) < 0) {
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this.start.row = fold.start.row;
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this.start.column = fold.start.column;
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}
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} else if (fold.start.row == this.end.row) {
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this.folds.push(fold);
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this.end.row = fold.end.row;
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this.end.column = fold.end.column;
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} else if (fold.end.row == this.start.row) {
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this.folds.unshift(fold);
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this.start.row = fold.start.row;
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this.start.column = fold.start.column;
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} else {
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throw "Trying to add fold to FoldRow that doesn't have a matching row";
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}
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fold.foldLine = this;
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}
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this.containsRow = function(row) {
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return row >= this.start.row && row <= this.end.row;
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}
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this.walk = function(callback, endRow, endColumn) {
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var lastEnd = 0,
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folds = this.folds,
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fold,
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comp, stop, isNewRow = true;
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if (endRow == null) {
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endRow = this.end.row;
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endColumn = this.end.column;
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}
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for (var i = 0; i < folds.length; i++) {
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fold = folds[i];
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comp = fold.range.compareStart(endRow, endColumn);
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// This fold is after the endRow/Column.
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if (comp == -1) {
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callback(null, endRow, endColumn, lastEnd, isNewRow);
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return;
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}
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stop = callback(null, fold.start.row, fold.start.column, lastEnd, isNewRow);
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stop = !stop && callback(fold.placeholder, fold.start.row, fold.start.column, lastEnd);
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// If the user requested to stop the walk or endRow/endColumn is
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// inside of this fold (comp == 0), then end here.
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if (stop || comp == 0) {
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return;
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}
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// Note the new lastEnd might not be on the same line. However,
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// it's the callback's job to recognize this.
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isNewRow = !fold.sameRow;
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lastEnd = fold.end.column;
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}
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callback(null, endRow, endColumn, lastEnd, isNewRow);
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}
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this.getNextFoldTo = function(row, column) {
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var fold, cmp;
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for (var i = 0; i < this.folds.length; i++) {
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fold = this.folds[i];
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cmp = fold.range.compareEnd(row, column);
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if (cmp == -1) {
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return {
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fold: fold,
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kind: "after"
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};
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} else if (cmp == 0) {
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return {
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fold: fold,
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kind: "inside"
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}
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}
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}
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return null;
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}
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this.addRemoveChars = function(row, column, len) {
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var ret = this.getNextFoldTo(row, column),
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fold, folds;
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if (ret) {
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fold = ret.fold;
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if (ret.kind == "inside"
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&& fold.start.column != column
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&& fold.start.row != row)
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{
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throw "Moving characters inside of a fold should never be reached";
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} else if (fold.start.row == row) {
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folds = this.folds;
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var i = folds.indexOf(fold);
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if (i == 0) {
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this.start.column += len;
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}
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for (i; i < folds.length; i++) {
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fold = folds[i];
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fold.start.column += len;
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if (!fold.sameRow) {
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return;
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}
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fold.end.column += len;
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}
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this.end.column += len;
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}
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}
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}
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this.split = function(row, column) {
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var fold = this.getNextFoldTo(row, column).fold,
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folds = this.folds;
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var foldData = this.foldData;
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if (!fold) {
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return null;
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}
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var i = folds.indexOf(fold);
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var foldBefore = folds[i - 1];
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this.end.row = foldBefore.end.row;
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this.end.column = foldBefore.end.column;
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// Remove the folds after row/column and create a new FoldLine
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// containing these removed folds.
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folds = folds.splice(i, folds.length - i);
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var newFoldLine = new FoldLine(foldData, folds);
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foldData.splice(foldData.indexOf(this) + 1, 0, newFoldLine);
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return newFoldLine;
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}
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this.merge = function(foldLineNext) {
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var folds = foldLineNext.folds;
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for (var i = 0; i < folds.length; i++) {
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this.addFold(folds[i]);
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}
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// Remove the foldLineNext - no longer needed, as
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// it's merged now with foldLineNext.
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var foldData = this.foldData;
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foldData.splice(foldData.indexOf(foldLineNext), 1);
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}
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this.toString = function() {
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var ret = [this.range.toString() + ": [" ];
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this.folds.forEach(function(fold) {
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ret.push(" " + fold.toString());
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});
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ret.push("]")
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return ret.join("\n");
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}
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this.idxToPosition = function(idx) {
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var lastFoldEndColumn = 0;
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var fold;
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for (var i = 0; i < this.folds.length; i++) {
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var fold = this.folds[i];
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idx -= fold.start.column - lastFoldEndColumn;
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if (idx < 0) {
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return {
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row: fold.start.row,
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column: fold.start.column + idx
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};
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}
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idx -= fold.placeholder.length;
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if (idx < 0) {
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return fold.start;
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}
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lastFoldEndColumn = fold.end.column;
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}
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return {
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row: this.end.row,
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column: this.end.column + idx
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};
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}
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}).call(FoldLine.prototype);
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exports.FoldLine = FoldLine;
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}); |