287 lines
10 KiB
JavaScript
287 lines
10 KiB
JavaScript
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/* ***** BEGIN LICENSE BLOCK *****
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* Distributed under the BSD license:
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*
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* Copyright (c) 2010, Ajax.org B.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Ajax.org B.V. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 oop = require("../../lib/oop");
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var lang = require("../../lib/lang");
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var Range = require("../../range").Range;
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var BaseFoldMode = require("./fold_mode").FoldMode;
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var TokenIterator = require("../../token_iterator").TokenIterator;
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var FoldMode = exports.FoldMode = function(voidElements, optionalEndTags) {
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BaseFoldMode.call(this);
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this.voidElements = voidElements || {};
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this.optionalEndTags = oop.mixin({}, this.voidElements);
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if (optionalEndTags)
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oop.mixin(this.optionalEndTags, optionalEndTags);
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};
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oop.inherits(FoldMode, BaseFoldMode);
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var Tag = function() {
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this.tagName = "";
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this.closing = false;
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this.selfClosing = false;
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this.start = {row: 0, column: 0};
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this.end = {row: 0, column: 0};
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};
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function is(token, type) {
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return token.type.lastIndexOf(type + ".xml") > -1;
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}
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(function() {
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this.getFoldWidget = function(session, foldStyle, row) {
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var tag = this._getFirstTagInLine(session, row);
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if (!tag)
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return this.getCommentFoldWidget(session, row);
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if (tag.closing || (!tag.tagName && tag.selfClosing))
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return foldStyle == "markbeginend" ? "end" : "";
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if (!tag.tagName || tag.selfClosing || this.voidElements.hasOwnProperty(tag.tagName.toLowerCase()))
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return "";
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if (this._findEndTagInLine(session, row, tag.tagName, tag.end.column))
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return "";
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return "start";
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};
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this.getCommentFoldWidget = function(session, row) {
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if (/comment/.test(session.getState(row)) && /<!-/.test(session.getLine(row)))
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return "start";
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return "";
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};
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/*
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* returns a first tag (or a fragment) in a line
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*/
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this._getFirstTagInLine = function(session, row) {
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var tokens = session.getTokens(row);
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var tag = new Tag();
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for (var i = 0; i < tokens.length; i++) {
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var token = tokens[i];
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if (is(token, "tag-open")) {
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tag.end.column = tag.start.column + token.value.length;
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tag.closing = is(token, "end-tag-open");
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token = tokens[++i];
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if (!token)
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return null;
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tag.tagName = token.value;
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tag.end.column += token.value.length;
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for (i++; i < tokens.length; i++) {
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token = tokens[i];
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tag.end.column += token.value.length;
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if (is(token, "tag-close")) {
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tag.selfClosing = token.value == '/>';
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break;
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}
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}
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return tag;
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} else if (is(token, "tag-close")) {
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tag.selfClosing = token.value == '/>';
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return tag;
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}
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tag.start.column += token.value.length;
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}
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return null;
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};
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this._findEndTagInLine = function(session, row, tagName, startColumn) {
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var tokens = session.getTokens(row);
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var column = 0;
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for (var i = 0; i < tokens.length; i++) {
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var token = tokens[i];
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column += token.value.length;
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if (column < startColumn)
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continue;
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if (is(token, "end-tag-open")) {
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token = tokens[i + 1];
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if (token && token.value == tagName)
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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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/*
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* reads a full tag and places the iterator after the tag
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*/
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this._readTagForward = function(iterator) {
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var token = iterator.getCurrentToken();
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if (!token)
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return null;
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var tag = new Tag();
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do {
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if (is(token, "tag-open")) {
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tag.closing = is(token, "end-tag-open");
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tag.start.row = iterator.getCurrentTokenRow();
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tag.start.column = iterator.getCurrentTokenColumn();
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} else if (is(token, "tag-name")) {
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tag.tagName = token.value;
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} else if (is(token, "tag-close")) {
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tag.selfClosing = token.value == "/>";
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tag.end.row = iterator.getCurrentTokenRow();
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tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
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iterator.stepForward();
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return tag;
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}
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} while(token = iterator.stepForward());
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return null;
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};
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this._readTagBackward = function(iterator) {
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var token = iterator.getCurrentToken();
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if (!token)
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return null;
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var tag = new Tag();
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do {
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if (is(token, "tag-open")) {
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tag.closing = is(token, "end-tag-open");
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tag.start.row = iterator.getCurrentTokenRow();
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tag.start.column = iterator.getCurrentTokenColumn();
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iterator.stepBackward();
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return tag;
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} else if (is(token, "tag-name")) {
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tag.tagName = token.value;
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} else if (is(token, "tag-close")) {
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tag.selfClosing = token.value == "/>";
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tag.end.row = iterator.getCurrentTokenRow();
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tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
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}
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} while(token = iterator.stepBackward());
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return null;
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};
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this._pop = function(stack, tag) {
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while (stack.length) {
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var top = stack[stack.length-1];
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if (!tag || top.tagName == tag.tagName) {
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return stack.pop();
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}
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else if (this.optionalEndTags.hasOwnProperty(top.tagName)) {
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stack.pop();
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continue;
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} else {
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return null;
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}
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}
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};
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this.getFoldWidgetRange = function(session, foldStyle, row) {
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var firstTag = this._getFirstTagInLine(session, row);
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if (!firstTag) {
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return this.getCommentFoldWidget(session, row)
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&& session.getCommentFoldRange(row, session.getLine(row).length);
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}
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var isBackward = firstTag.closing || firstTag.selfClosing;
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var stack = [];
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var tag;
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if (!isBackward) {
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var iterator = new TokenIterator(session, row, firstTag.start.column);
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var start = {
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row: row,
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column: firstTag.start.column + firstTag.tagName.length + 2
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};
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if (firstTag.start.row == firstTag.end.row)
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start.column = firstTag.end.column;
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while (tag = this._readTagForward(iterator)) {
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if (tag.selfClosing) {
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if (!stack.length) {
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tag.start.column += tag.tagName.length + 2;
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tag.end.column -= 2;
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return Range.fromPoints(tag.start, tag.end);
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} else
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continue;
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}
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if (tag.closing) {
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this._pop(stack, tag);
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if (stack.length == 0)
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return Range.fromPoints(start, tag.start);
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}
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else {
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stack.push(tag);
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}
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}
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}
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else {
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var iterator = new TokenIterator(session, row, firstTag.end.column);
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var end = {
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row: row,
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column: firstTag.start.column
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};
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while (tag = this._readTagBackward(iterator)) {
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if (tag.selfClosing) {
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if (!stack.length) {
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tag.start.column += tag.tagName.length + 2;
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tag.end.column -= 2;
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return Range.fromPoints(tag.start, tag.end);
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} else
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continue;
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}
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if (!tag.closing) {
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this._pop(stack, tag);
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if (stack.length == 0) {
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tag.start.column += tag.tagName.length + 2;
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if (tag.start.row == tag.end.row && tag.start.column < tag.end.column)
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tag.start.column = tag.end.column;
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return Range.fromPoints(tag.start, end);
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}
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}
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else {
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stack.push(tag);
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}
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}
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}
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};
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}).call(FoldMode.prototype);
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});
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