/* ***** 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 dom = require("../lib/dom"); var lang = require("../lib/lang"); var useragent = require("../lib/useragent"); var EventEmitter = require("../lib/event_emitter").EventEmitter; var Text = function(parentEl) { this.element = dom.createElement("div"); this.element.className = "ace_layer ace_text-layer"; parentEl.appendChild(this.element); this.$characterSize = {width: 0, height: 0}; this.checkForSizeChanges(); this.$pollSizeChanges(); }; (function() { oop.implement(this, EventEmitter); this.EOF_CHAR = "\xB6"; //"¶"; this.EOL_CHAR = "\xAC"; //"¬"; this.TAB_CHAR = "\u2192"; //"→" "\u21E5"; this.SPACE_CHAR = "\xB7"; //"·"; this.$padding = 0; this.setPadding = function(padding) { this.$padding = padding; this.element.style.padding = "0 " + padding + "px"; }; this.getLineHeight = function() { return this.$characterSize.height || 1; }; this.getCharacterWidth = function() { return this.$characterSize.width || 1; }; this.checkForSizeChanges = function() { var size = this.$measureSizes(); if (size && (this.$characterSize.width !== size.width || this.$characterSize.height !== size.height)) { this.$measureNode.style.fontWeight = "bold"; var boldSize = this.$measureSizes(); this.$measureNode.style.fontWeight = ""; this.$characterSize = size; this.allowBoldFonts = boldSize && boldSize.width === size.width && boldSize.height === size.height; this._emit("changeCharacterSize", {data: size}); } }; this.$pollSizeChanges = function() { var self = this; this.$pollSizeChangesTimer = setInterval(function() { self.checkForSizeChanges(); }, 500); }; this.$fontStyles = { fontFamily : 1, fontSize : 1, fontWeight : 1, fontStyle : 1, lineHeight : 1 }; this.$measureSizes = useragent.isIE || useragent.isOldGecko ? function() { var n = 1000; if (!this.$measureNode) { var measureNode = this.$measureNode = dom.createElement("div"); var style = measureNode.style; style.width = style.height = "auto"; style.left = style.top = (-n * 40) + "px"; style.visibility = "hidden"; style.position = "fixed"; style.overflow = "visible"; style.whiteSpace = "nowrap"; // in FF 3.6 monospace fonts can have a fixed sub pixel width. // that's why we have to measure many characters // Note: characterWidth can be a float! measureNode.innerHTML = lang.stringRepeat("Xy", n); if (this.element.ownerDocument.body) { this.element.ownerDocument.body.appendChild(measureNode); } else { var container = this.element.parentNode; while (!dom.hasCssClass(container, "ace_editor")) container = container.parentNode; container.appendChild(measureNode); } } // Size and width can be null if the editor is not visible or // detached from the document if (!this.element.offsetWidth) return null; var style = this.$measureNode.style; var computedStyle = dom.computedStyle(this.element); for (var prop in this.$fontStyles) style[prop] = computedStyle[prop]; var size = { height: this.$measureNode.offsetHeight, width: this.$measureNode.offsetWidth / (n * 2) }; // Size and width can be null if the editor is not visible or // detached from the document if (size.width == 0 || size.height == 0) return null; return size; } : function() { if (!this.$measureNode) { var measureNode = this.$measureNode = dom.createElement("div"); var style = measureNode.style; style.width = style.height = "auto"; style.left = style.top = -100 + "px"; style.visibility = "hidden"; style.position = "fixed"; style.overflow = "visible"; style.whiteSpace = "nowrap"; measureNode.innerHTML = "X"; var container = this.element.parentNode; while (container && !dom.hasCssClass(container, "ace_editor")) container = container.parentNode; if (!container) return this.$measureNode = null; container.appendChild(measureNode); } var rect = this.$measureNode.getBoundingClientRect(); var size = { height: rect.height, width: rect.width }; // Size and width can be null if the editor is not visible or // detached from the document if (size.width == 0 || size.height == 0) return null; return size; }; this.setSession = function(session) { this.session = session; this.$computeTabString(); }; this.showInvisibles = false; this.setShowInvisibles = function(showInvisibles) { if (this.showInvisibles == showInvisibles) return false; this.showInvisibles = showInvisibles; this.$computeTabString(); return true; }; this.displayIndentGuides = true; this.setDisplayIndentGuides = function(display) { if (this.displayIndentGuides == display) return false; this.displayIndentGuides = display; this.$computeTabString(); return true; }; this.$tabStrings = []; this.onChangeTabSize = this.$computeTabString = function() { var tabSize = this.session.getTabSize(); this.tabSize = tabSize; var tabStr = this.$tabStrings = [0]; for (var i = 1; i < tabSize + 1; i++) { if (this.showInvisibles) { tabStr.push("" + this.TAB_CHAR + Array(i).join(" ") + ""); } else { tabStr.push(new Array(i+1).join(" ")); } } if (this.displayIndentGuides) { this.$indentGuideRe = /\s\S| \t|\t |\s$/; var className = "ace_indent-guide"; var content = Array(this.tabSize + 1).join(" "); var tabContent = content; if (this.showInvisibles) { className += " ace_invisible"; tabContent = this.TAB_CHAR + content.substr(6); } this.$tabStrings[" "] = "" + content + ""; this.$tabStrings["\t"] = "" + tabContent + ""; } }; this.updateLines = function(config, firstRow, lastRow) { // Due to wrap line changes there can be new lines if e.g. // the line to updated wrapped in the meantime. if (this.config.lastRow != config.lastRow || this.config.firstRow != config.firstRow) { this.scrollLines(config); } this.config = config; var first = Math.max(firstRow, config.firstRow); var last = Math.min(lastRow, config.lastRow); var lineElements = this.element.childNodes; var lineElementsIdx = 0; for (var row = config.firstRow; row < first; row++) { var foldLine = this.session.getFoldLine(row); if (foldLine) { if (foldLine.containsRow(first)) { first = foldLine.start.row; break; } else { row = foldLine.end.row; } } lineElementsIdx ++; } var row = first; var foldLine = this.session.getNextFoldLine(row); var foldStart = foldLine ? foldLine.start.row : Infinity; while (true) { if (row > foldStart) { row = foldLine.end.row+1; foldLine = this.session.getNextFoldLine(row, foldLine); foldStart = foldLine ? foldLine.start.row :Infinity; } if (row > last) break; var lineElement = lineElements[lineElementsIdx++]; if (lineElement) { var html = []; this.$renderLine( html, row, !this.$useLineGroups(), row == foldStart ? foldLine : false ); dom.setInnerHtml(lineElement, html.join("")); } row++; } }; this.scrollLines = function(config) { var oldConfig = this.config; this.config = config; if (!oldConfig || oldConfig.lastRow < config.firstRow) return this.update(config); if (config.lastRow < oldConfig.firstRow) return this.update(config); var el = this.element; if (oldConfig.firstRow < config.firstRow) for (var row=this.session.getFoldedRowCount(oldConfig.firstRow, config.firstRow - 1); row>0; row--) el.removeChild(el.firstChild); if (oldConfig.lastRow > config.lastRow) for (var row=this.session.getFoldedRowCount(config.lastRow + 1, oldConfig.lastRow); row>0; row--) el.removeChild(el.lastChild); if (config.firstRow < oldConfig.firstRow) { var fragment = this.$renderLinesFragment(config, config.firstRow, oldConfig.firstRow - 1); if (el.firstChild) el.insertBefore(fragment, el.firstChild); else el.appendChild(fragment); } if (config.lastRow > oldConfig.lastRow) { var fragment = this.$renderLinesFragment(config, oldConfig.lastRow + 1, config.lastRow); el.appendChild(fragment); } }; this.$renderLinesFragment = function(config, firstRow, lastRow) { var fragment = this.element.ownerDocument.createDocumentFragment(); var row = firstRow; var foldLine = this.session.getNextFoldLine(row); var foldStart = foldLine ? foldLine.start.row : Infinity; while (true) { if (row > foldStart) { row = foldLine.end.row+1; foldLine = this.session.getNextFoldLine(row, foldLine); foldStart = foldLine ? foldLine.start.row : Infinity; } if (row > lastRow) break; var container = dom.createElement("div"); var html = []; // Get the tokens per line as there might be some lines in between // beeing folded. this.$renderLine(html, row, false, row == foldStart ? foldLine : false); // don't use setInnerHtml since we are working with an empty DIV container.innerHTML = html.join(""); if (this.$useLineGroups()) { container.className = 'ace_line_group'; fragment.appendChild(container); } else { var lines = container.childNodes while(lines.length) fragment.appendChild(lines[0]); } row++; } return fragment; }; this.update = function(config) { this.config = config; var html = []; var firstRow = config.firstRow, lastRow = config.lastRow; var row = firstRow; var foldLine = this.session.getNextFoldLine(row); var foldStart = foldLine ? foldLine.start.row : Infinity; while (true) { if (row > foldStart) { row = foldLine.end.row+1; foldLine = this.session.getNextFoldLine(row, foldLine); foldStart = foldLine ? foldLine.start.row :Infinity; } if (row > lastRow) break; if (this.$useLineGroups()) html.push("
") this.$renderLine(html, row, false, row == foldStart ? foldLine : false); if (this.$useLineGroups()) html.push("
"); // end the line group row++; } this.element = dom.setInnerHtml(this.element, html.join("")); }; this.$textToken = { "text": true, "rparen": true, "lparen": true }; this.$renderToken = function(stringBuilder, screenColumn, token, value) { var self = this; var replaceReg = /\t|&|<|( +)|([\x00-\x1f\x80-\xa0\u1680\u180E\u2000-\u200f\u2028\u2029\u202F\u205F\u3000\uFEFF])|[\u1100-\u115F\u11A3-\u11A7\u11FA-\u11FF\u2329-\u232A\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u2FF0-\u2FFB\u3000-\u303E\u3041-\u3096\u3099-\u30FF\u3105-\u312D\u3131-\u318E\u3190-\u31BA\u31C0-\u31E3\u31F0-\u321E\u3220-\u3247\u3250-\u32FE\u3300-\u4DBF\u4E00-\uA48C\uA490-\uA4C6\uA960-\uA97C\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFAFF\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE66\uFE68-\uFE6B\uFF01-\uFF60\uFFE0-\uFFE6]/g; var replaceFunc = function(c, a, b, tabIdx, idx4) { if (a) { return new Array(c.length+1).join(" "); } else if (c == "&") { return "&"; } else if (c == "<") { return "<"; } else if (c == "\t") { var tabSize = self.session.getScreenTabSize(screenColumn + tabIdx); screenColumn += tabSize - 1; return self.$tabStrings[tabSize]; } else if (c == "\u3000") { // U+3000 is both invisible AND full-width, so must be handled uniquely var classToUse = self.showInvisibles ? "ace_cjk ace_invisible" : "ace_cjk"; var space = self.showInvisibles ? self.SPACE_CHAR : ""; screenColumn += 1; return "" + space + ""; } else if (b) { return "" + self.SPACE_CHAR + ""; } else { screenColumn += 1; return "" + c + ""; } }; var output = value.replace(replaceReg, replaceFunc); if (!this.$textToken[token.type]) { var classes = "ace_" + token.type.replace(/\./g, " ace_"); var style = ""; if (token.type == "fold") style = " style='width:" + (token.value.length * this.config.characterWidth) + "px;' "; stringBuilder.push("", output, ""); } else { stringBuilder.push(output); } return screenColumn + value.length; }; this.renderIndentGuide = function(stringBuilder, value) { var cols = value.search(this.$indentGuideRe); if (cols <= 0) return value; if (value[0] == " ") { cols -= cols % this.tabSize; stringBuilder.push(Array(cols/this.tabSize + 1).join(this.$tabStrings[" "])); return value.substr(cols); } else if (value[0] == "\t") { stringBuilder.push(Array(cols + 1).join(this.$tabStrings["\t"])); return value.substr(cols); } return value; }; this.$renderWrappedLine = function(stringBuilder, tokens, splits, onlyContents) { var chars = 0; var split = 0; var splitChars = splits[0]; var screenColumn = 0; for (var i = 0; i < tokens.length; i++) { var token = tokens[i]; var value = token.value; if (i == 0 && this.displayIndentGuides) { chars = value.length; value = this.renderIndentGuide(stringBuilder, value); if (!value) continue; chars -= value.length; } if (chars + value.length < splitChars) { screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value); chars += value.length; } else { while (chars + value.length >= splitChars) { screenColumn = this.$renderToken( stringBuilder, screenColumn, token, value.substring(0, splitChars - chars) ); value = value.substring(splitChars - chars); chars = splitChars; if (!onlyContents) { stringBuilder.push("", "
" ); } split ++; screenColumn = 0; splitChars = splits[split] || Number.MAX_VALUE; } if (value.length != 0) { chars += value.length; screenColumn = this.$renderToken( stringBuilder, screenColumn, token, value ); } } } }; this.$renderSimpleLine = function(stringBuilder, tokens) { var screenColumn = 0; var token = tokens[0]; var value = token.value; if (this.displayIndentGuides) value = this.renderIndentGuide(stringBuilder, value); if (value) screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value); for (var i = 1; i < tokens.length; i++) { token = tokens[i]; value = token.value; screenColumn = this.$renderToken(stringBuilder, screenColumn, token, value); } }; // row is either first row of foldline or not in fold this.$renderLine = function(stringBuilder, row, onlyContents, foldLine) { if (!foldLine && foldLine != false) foldLine = this.session.getFoldLine(row); if (foldLine) var tokens = this.$getFoldLineTokens(row, foldLine); else var tokens = this.session.getTokens(row); if (!onlyContents) { stringBuilder.push( "
" ); } if (tokens.length) { var splits = this.session.getRowSplitData(row); if (splits && splits.length) this.$renderWrappedLine(stringBuilder, tokens, splits, onlyContents); else this.$renderSimpleLine(stringBuilder, tokens); } if (this.showInvisibles) { if (foldLine) row = foldLine.end.row stringBuilder.push( "", row == this.session.getLength() - 1 ? this.EOF_CHAR : this.EOL_CHAR, "" ); } if (!onlyContents) stringBuilder.push("
"); }; this.$getFoldLineTokens = function(row, foldLine) { var session = this.session; var renderTokens = []; function addTokens(tokens, from, to) { var idx = 0, col = 0; while ((col + tokens[idx].value.length) < from) { col += tokens[idx].value.length; idx++; if (idx == tokens.length) return; } if (col != from) { var value = tokens[idx].value.substring(from - col); // Check if the token value is longer then the from...to spacing. if (value.length > (to - from)) value = value.substring(0, to - from); renderTokens.push({ type: tokens[idx].type, value: value }); col = from + value.length; idx += 1; } while (col < to && idx < tokens.length) { var value = tokens[idx].value; if (value.length + col > to) { renderTokens.push({ type: tokens[idx].type, value: value.substring(0, to - col) }); } else renderTokens.push(tokens[idx]); col += value.length; idx += 1; } } var tokens = session.getTokens(row); foldLine.walk(function(placeholder, row, column, lastColumn, isNewRow) { if (placeholder != null) { renderTokens.push({ type: "fold", value: placeholder }); } else { if (isNewRow) tokens = session.getTokens(row); if (tokens.length) addTokens(tokens, lastColumn, column); } }, foldLine.end.row, this.session.getLine(foldLine.end.row).length); return renderTokens; }; this.$useLineGroups = function() { // For the updateLines function to work correctly, it's important that the // child nodes of this.element correspond on a 1-to-1 basis to rows in the // document (as distinct from lines on the screen). For sessions that are // wrapped, this means we need to add a layer to the node hierarchy (tagged // with the class name ace_line_group). return this.session.getUseWrapMode(); }; this.destroy = function() { clearInterval(this.$pollSizeChangesTimer); if (this.$measureNode) this.$measureNode.parentNode.removeChild(this.$measureNode); delete this.$measureNode; }; }).call(Text.prototype); exports.Text = Text; });