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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";
- var oop = require("../../lib/oop");
- var lang = require("../../lib/lang");
- var Range = require("../../range").Range;
- var BaseFoldMode = require("./fold_mode").FoldMode;
- var TokenIterator = require("../../token_iterator").TokenIterator;
- var FoldMode = exports.FoldMode = function(voidElements, optionalEndTags) {
- BaseFoldMode.call(this);
- this.voidElements = voidElements || {};
- this.optionalEndTags = oop.mixin({}, this.voidElements);
- if (optionalEndTags)
- oop.mixin(this.optionalEndTags, optionalEndTags);
-
- };
- oop.inherits(FoldMode, BaseFoldMode);
- var Tag = function() {
- this.tagName = "";
- this.closing = false;
- this.selfClosing = false;
- this.start = {row: 0, column: 0};
- this.end = {row: 0, column: 0};
- };
- function is(token, type) {
- return token.type.lastIndexOf(type + ".xml") > -1;
- }
- (function() {
- this.getFoldWidget = function(session, foldStyle, row) {
- var tag = this._getFirstTagInLine(session, row);
- if (!tag)
- return "";
- if (tag.closing || (!tag.tagName && tag.selfClosing))
- return foldStyle == "markbeginend" ? "end" : "";
- if (!tag.tagName || tag.selfClosing || this.voidElements.hasOwnProperty(tag.tagName.toLowerCase()))
- return "";
- if (this._findEndTagInLine(session, row, tag.tagName, tag.end.column))
- return "";
- return "start";
- };
- /*
- * returns a first tag (or a fragment) in a line
- */
- this._getFirstTagInLine = function(session, row) {
- var tokens = session.getTokens(row);
- var tag = new Tag();
- for (var i = 0; i < tokens.length; i++) {
- var token = tokens[i];
- if (is(token, "tag-open")) {
- tag.end.column = tag.start.column + token.value.length;
- tag.closing = is(token, "end-tag-open");
- token = tokens[++i];
- if (!token)
- return null;
- tag.tagName = token.value;
- tag.end.column += token.value.length;
- for (i++; i < tokens.length; i++) {
- token = tokens[i];
- tag.end.column += token.value.length;
- if (is(token, "tag-close")) {
- tag.selfClosing = token.value == '/>';
- break;
- }
- }
- return tag;
- } else if (is(token, "tag-close")) {
- tag.selfClosing = token.value == '/>';
- return tag;
- }
- tag.start.column += token.value.length;
- }
- return null;
- };
- this._findEndTagInLine = function(session, row, tagName, startColumn) {
- var tokens = session.getTokens(row);
- var column = 0;
- for (var i = 0; i < tokens.length; i++) {
- var token = tokens[i];
- column += token.value.length;
- if (column < startColumn)
- continue;
- if (is(token, "end-tag-open")) {
- token = tokens[i + 1];
- if (token && token.value == tagName)
- return true;
- }
- }
- return false;
- };
- /*
- * reads a full tag and places the iterator after the tag
- */
- this._readTagForward = function(iterator) {
- var token = iterator.getCurrentToken();
- if (!token)
- return null;
- var tag = new Tag();
- do {
- if (is(token, "tag-open")) {
- tag.closing = is(token, "end-tag-open");
- tag.start.row = iterator.getCurrentTokenRow();
- tag.start.column = iterator.getCurrentTokenColumn();
- } else if (is(token, "tag-name")) {
- tag.tagName = token.value;
- } else if (is(token, "tag-close")) {
- tag.selfClosing = token.value == "/>";
- tag.end.row = iterator.getCurrentTokenRow();
- tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
- iterator.stepForward();
- return tag;
- }
- } while(token = iterator.stepForward());
- return null;
- };
-
- this._readTagBackward = function(iterator) {
- var token = iterator.getCurrentToken();
- if (!token)
- return null;
- var tag = new Tag();
- do {
- if (is(token, "tag-open")) {
- tag.closing = is(token, "end-tag-open");
- tag.start.row = iterator.getCurrentTokenRow();
- tag.start.column = iterator.getCurrentTokenColumn();
- iterator.stepBackward();
- return tag;
- } else if (is(token, "tag-name")) {
- tag.tagName = token.value;
- } else if (is(token, "tag-close")) {
- tag.selfClosing = token.value == "/>";
- tag.end.row = iterator.getCurrentTokenRow();
- tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
- }
- } while(token = iterator.stepBackward());
- return null;
- };
-
- this._pop = function(stack, tag) {
- while (stack.length) {
-
- var top = stack[stack.length-1];
- if (!tag || top.tagName == tag.tagName) {
- return stack.pop();
- }
- else if (this.optionalEndTags.hasOwnProperty(top.tagName)) {
- stack.pop();
- continue;
- } else {
- return null;
- }
- }
- };
-
- this.getFoldWidgetRange = function(session, foldStyle, row) {
- var firstTag = this._getFirstTagInLine(session, row);
-
- if (!firstTag)
- return null;
-
- var isBackward = firstTag.closing || firstTag.selfClosing;
- var stack = [];
- var tag;
-
- if (!isBackward) {
- var iterator = new TokenIterator(session, row, firstTag.start.column);
- var start = {
- row: row,
- column: firstTag.start.column + firstTag.tagName.length + 2
- };
- if (firstTag.start.row == firstTag.end.row)
- start.column = firstTag.end.column;
- while (tag = this._readTagForward(iterator)) {
- if (tag.selfClosing) {
- if (!stack.length) {
- tag.start.column += tag.tagName.length + 2;
- tag.end.column -= 2;
- return Range.fromPoints(tag.start, tag.end);
- } else
- continue;
- }
-
- if (tag.closing) {
- this._pop(stack, tag);
- if (stack.length == 0)
- return Range.fromPoints(start, tag.start);
- }
- else {
- stack.push(tag);
- }
- }
- }
- else {
- var iterator = new TokenIterator(session, row, firstTag.end.column);
- var end = {
- row: row,
- column: firstTag.start.column
- };
-
- while (tag = this._readTagBackward(iterator)) {
- if (tag.selfClosing) {
- if (!stack.length) {
- tag.start.column += tag.tagName.length + 2;
- tag.end.column -= 2;
- return Range.fromPoints(tag.start, tag.end);
- } else
- continue;
- }
-
- if (!tag.closing) {
- this._pop(stack, tag);
- if (stack.length == 0) {
- tag.start.column += tag.tagName.length + 2;
- if (tag.start.row == tag.end.row && tag.start.column < tag.end.column)
- tag.start.column = tag.end.column;
- return Range.fromPoints(tag.start, end);
- }
- }
- else {
- stack.push(tag);
- }
- }
- }
-
- };
- }).call(FoldMode.prototype);
- });
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