633 lines
24 KiB
JavaScript
633 lines
24 KiB
JavaScript
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/*
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* Behave.js
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*
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* Copyright 2013, Jacob Kelley - http://jakiestfu.com/
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* Released under the MIT Licence
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* http://opensource.org/licenses/MIT
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*
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* Github: http://github.com/jakiestfu/Behave.js/
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* Version: 1.5
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*/
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(function(undefined){
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'use strict';
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var BehaveHooks = BehaveHooks || (function(){
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var hooks = {};
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return {
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add: function(hookName, fn){
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if(typeof hookName == "object"){
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var i;
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for(i=0; i<hookName.length; i++){
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var theHook = hookName[i];
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if(!hooks[theHook]){
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hooks[theHook] = [];
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}
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hooks[theHook].push(fn);
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}
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} else {
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if(!hooks[hookName]){
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hooks[hookName] = [];
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}
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hooks[hookName].push(fn);
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}
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},
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get: function(hookName){
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if(hooks[hookName]){
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return hooks[hookName];
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}
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}
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};
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})(),
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Behave = Behave || function (userOpts) {
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if (typeof String.prototype.repeat !== 'function') {
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String.prototype.repeat = function(times) {
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if(times < 1){
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return '';
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}
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if(times % 2){
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return this.repeat(times - 1) + this;
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}
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var half = this.repeat(times / 2);
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return half + half;
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};
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}
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if (typeof Array.prototype.filter !== 'function') {
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Array.prototype.filter = function(func /*, thisp */) {
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if (this === null) {
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throw new TypeError();
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}
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var t = Object(this),
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len = t.length >>> 0;
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if (typeof func != "function"){
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throw new TypeError();
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}
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var res = [],
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thisp = arguments[1];
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for (var i = 0; i < len; i++) {
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if (i in t) {
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var val = t[i];
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if (func.call(thisp, val, i, t)) {
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res.push(val);
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}
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}
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}
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return res;
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};
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}
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var defaults = {
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textarea: null,
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replaceTab: true,
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softTabs: true,
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tabSize: 4,
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autoOpen: true,
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overwrite: true,
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autoStrip: true,
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autoIndent: true,
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fence: false
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},
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tab,
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newLine,
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charSettings = {
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keyMap: [
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{ open: "\"", close: "\"", canBreak: false },
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{ open: "'", close: "'", canBreak: false },
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{ open: "(", close: ")", canBreak: false },
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{ open: "[", close: "]", canBreak: true },
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{ open: "{", close: "}", canBreak: true }
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]
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},
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utils = {
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_callHook: function(hookName, passData){
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var hooks = BehaveHooks.get(hookName);
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passData = typeof passData=="boolean" && passData === false ? false : true;
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if(hooks){
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if(passData){
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var theEditor = defaults.textarea,
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textVal = theEditor.value,
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caretPos = utils.cursor.get(),
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i;
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for(i=0; i<hooks.length; i++){
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hooks[i].call(undefined, {
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editor: {
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element: theEditor,
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text: textVal,
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levelsDeep: utils.levelsDeep()
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},
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caret: {
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pos: caretPos
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},
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lines: {
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current: utils.cursor.getLine(textVal, caretPos),
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total: utils.editor.getLines(textVal)
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}
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});
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}
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} else {
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for(i=0; i<hooks.length; i++){
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hooks[i].call(undefined);
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}
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}
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}
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},
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defineNewLine: function(){
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var ta = document.createElement('textarea');
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ta.value = "\n";
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if(ta.value.length==2){
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newLine = "\r\n";
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} else {
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newLine = "\n";
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}
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},
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defineTabSize: function(tabSize){
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if(typeof defaults.textarea.style.OTabSize != "undefined"){
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defaults.textarea.style.OTabSize = tabSize; return;
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}
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if(typeof defaults.textarea.style.MozTabSize != "undefined"){
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defaults.textarea.style.MozTabSize = tabSize; return;
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}
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if(typeof defaults.textarea.style.tabSize != "undefined"){
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defaults.textarea.style.tabSize = tabSize; return;
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}
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},
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cursor: {
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getLine: function(textVal, pos){
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return ((textVal.substring(0,pos)).split("\n")).length;
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},
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get: function() {
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if (typeof document.createElement('textarea').selectionStart==="number") {
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return defaults.textarea.selectionStart;
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} else if (document.selection) {
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var caretPos = 0,
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range = defaults.textarea.createTextRange(),
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rangeDupe = document.selection.createRange().duplicate(),
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rangeDupeBookmark = rangeDupe.getBookmark();
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range.moveToBookmark(rangeDupeBookmark);
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while (range.moveStart('character' , -1) !== 0) {
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caretPos++;
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}
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return caretPos;
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}
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},
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set: function (start, end) {
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if(!end){
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end = start;
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}
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if (defaults.textarea.setSelectionRange) {
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defaults.textarea.focus();
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defaults.textarea.setSelectionRange(start, end);
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} else if (defaults.textarea.createTextRange) {
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var range = defaults.textarea.createTextRange();
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range.collapse(true);
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range.moveEnd('character', end);
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range.moveStart('character', start);
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range.select();
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}
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},
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selection: function(){
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var textAreaElement = defaults.textarea,
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start = 0,
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end = 0,
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normalizedValue,
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range,
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textInputRange,
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len,
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endRange;
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if (typeof textAreaElement.selectionStart == "number" && typeof textAreaElement.selectionEnd == "number") {
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start = textAreaElement.selectionStart;
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end = textAreaElement.selectionEnd;
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} else {
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range = document.selection.createRange();
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if (range && range.parentElement() == textAreaElement) {
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normalizedValue = utils.editor.get();
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len = normalizedValue.length;
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textInputRange = textAreaElement.createTextRange();
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textInputRange.moveToBookmark(range.getBookmark());
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endRange = textAreaElement.createTextRange();
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endRange.collapse(false);
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if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
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start = end = len;
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} else {
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start = -textInputRange.moveStart("character", -len);
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start += normalizedValue.slice(0, start).split(newLine).length - 1;
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if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) {
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end = len;
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} else {
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end = -textInputRange.moveEnd("character", -len);
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end += normalizedValue.slice(0, end).split(newLine).length - 1;
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}
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}
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}
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}
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return start==end ? false : {
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start: start,
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end: end
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};
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}
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},
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editor: {
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getLines: function(textVal){
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return (textVal).split("\n").length;
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},
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get: function(){
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return defaults.textarea.value.replace(/\r/g,'');
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},
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set: function(data){
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defaults.textarea.value = data;
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}
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},
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fenceRange: function(){
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if(typeof defaults.fence == "string"){
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var data = utils.editor.get(),
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pos = utils.cursor.get(),
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hacked = 0,
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matchedFence = data.indexOf(defaults.fence),
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matchCase = 0;
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while(matchedFence>=0){
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matchCase++;
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if( pos < (matchedFence+hacked) ){
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break;
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}
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hacked += matchedFence+defaults.fence.length;
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data = data.substring(matchedFence+defaults.fence.length);
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matchedFence = data.indexOf(defaults.fence);
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}
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if( (hacked) < pos && ( (matchedFence+hacked) > pos ) && matchCase%2===0){
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return true;
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}
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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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isEven: function(_this,i){
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return i%2;
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},
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levelsDeep: function(){
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var pos = utils.cursor.get(),
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val = utils.editor.get();
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var left = val.substring(0, pos),
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levels = 0,
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i, j;
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for(i=0; i<left.length; i++){
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for (j=0; j<charSettings.keyMap.length; j++) {
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if(charSettings.keyMap[j].canBreak){
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if(charSettings.keyMap[j].open == left.charAt(i)){
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levels++;
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}
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if(charSettings.keyMap[j].close == left.charAt(i)){
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levels--;
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}
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}
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}
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}
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var toDecrement = 0,
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quoteMap = ["'", "\""];
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for(i=0; i<charSettings.keyMap.length; i++) {
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if(charSettings.keyMap[i].canBreak){
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for(j in quoteMap){
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toDecrement += left.split(quoteMap[j]).filter(utils.isEven).join('').split(charSettings.keyMap[i].open).length - 1;
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}
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}
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}
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var finalLevels = levels - toDecrement;
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return finalLevels >=0 ? finalLevels : 0;
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},
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deepExtend: function(destination, source) {
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for (var property in source) {
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if (source[property] && source[property].constructor &&
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source[property].constructor === Object) {
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destination[property] = destination[property] || {};
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utils.deepExtend(destination[property], source[property]);
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} else {
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destination[property] = source[property];
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}
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}
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return destination;
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},
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addEvent: function addEvent(element, eventName, func) {
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if (element.addEventListener){
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element.addEventListener(eventName,func,false);
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} else if (element.attachEvent) {
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element.attachEvent("on"+eventName, func);
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}
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},
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removeEvent: function addEvent(element, eventName, func){
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if (element.addEventListener){
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element.removeEventListener(eventName,func,false);
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} else if (element.attachEvent) {
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element.detachEvent("on"+eventName, func);
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}
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},
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preventDefaultEvent: function(e){
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if(e.preventDefault){
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e.preventDefault();
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} else {
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e.returnValue = false;
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}
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}
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},
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intercept = {
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tabKey: function (e) {
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if(!utils.fenceRange()){ return; }
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if (e.keyCode == 9) {
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utils.preventDefaultEvent(e);
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var toReturn = true;
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utils._callHook('tab:before');
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var selection = utils.cursor.selection(),
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pos = utils.cursor.get(),
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val = utils.editor.get();
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if(selection){
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var tempStart = selection.start;
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while(tempStart--){
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if(val.charAt(tempStart)=="\n"){
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selection.start = tempStart + 1;
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break;
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}
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}
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var toIndent = val.substring(selection.start, selection.end),
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lines = toIndent.split("\n"),
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i;
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if(e.shiftKey){
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for(i = 0; i<lines.length; i++){
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if(lines[i].substring(0,tab.length) == tab){
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lines[i] = lines[i].substring(tab.length);
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}
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}
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toIndent = lines.join("\n");
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utils.editor.set( val.substring(0,selection.start) + toIndent + val.substring(selection.end) );
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utils.cursor.set(selection.start, selection.start+toIndent.length);
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} else {
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for(i in lines){
|
||
|
|
lines[i] = tab + lines[i];
|
||
|
|
}
|
||
|
|
toIndent = lines.join("\n");
|
||
|
|
|
||
|
|
utils.editor.set( val.substring(0,selection.start) + toIndent + val.substring(selection.end) );
|
||
|
|
utils.cursor.set(selection.start, selection.start+toIndent.length);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
var left = val.substring(0, pos),
|
||
|
|
right = val.substring(pos),
|
||
|
|
edited = left + tab + right;
|
||
|
|
|
||
|
|
if(e.shiftKey){
|
||
|
|
if(val.substring(pos-tab.length, pos) == tab){
|
||
|
|
edited = val.substring(0, pos-tab.length) + right;
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos-tab.length);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos + tab.length);
|
||
|
|
toReturn = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
utils._callHook('tab:after');
|
||
|
|
}
|
||
|
|
return toReturn;
|
||
|
|
},
|
||
|
|
enterKey: function (e) {
|
||
|
|
|
||
|
|
if(!utils.fenceRange()){ return; }
|
||
|
|
|
||
|
|
if (e.keyCode == 13) {
|
||
|
|
|
||
|
|
utils.preventDefaultEvent(e);
|
||
|
|
utils._callHook('enter:before');
|
||
|
|
|
||
|
|
var pos = utils.cursor.get(),
|
||
|
|
val = utils.editor.get(),
|
||
|
|
left = val.substring(0, pos),
|
||
|
|
right = val.substring(pos),
|
||
|
|
leftChar = left.charAt(left.length - 1),
|
||
|
|
rightChar = right.charAt(0),
|
||
|
|
numTabs = utils.levelsDeep(),
|
||
|
|
ourIndent = "",
|
||
|
|
closingBreak = "",
|
||
|
|
finalCursorPos,
|
||
|
|
i;
|
||
|
|
if(!numTabs){
|
||
|
|
finalCursorPos = 1;
|
||
|
|
} else {
|
||
|
|
while(numTabs--){
|
||
|
|
ourIndent+=tab;
|
||
|
|
}
|
||
|
|
ourIndent = ourIndent;
|
||
|
|
finalCursorPos = ourIndent.length + 1;
|
||
|
|
|
||
|
|
for(i=0; i<charSettings.keyMap.length; i++) {
|
||
|
|
if (charSettings.keyMap[i].open == leftChar && charSettings.keyMap[i].close == rightChar){
|
||
|
|
closingBreak = newLine;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
var edited = left + newLine + ourIndent + closingBreak + (ourIndent.substring(0, ourIndent.length-tab.length) ) + right;
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos + finalCursorPos);
|
||
|
|
utils._callHook('enter:after');
|
||
|
|
}
|
||
|
|
},
|
||
|
|
deleteKey: function (e) {
|
||
|
|
|
||
|
|
if(!utils.fenceRange()){ return; }
|
||
|
|
|
||
|
|
if(e.keyCode == 8){
|
||
|
|
utils.preventDefaultEvent(e);
|
||
|
|
|
||
|
|
utils._callHook('delete:before');
|
||
|
|
|
||
|
|
var pos = utils.cursor.get(),
|
||
|
|
val = utils.editor.get(),
|
||
|
|
left = val.substring(0, pos),
|
||
|
|
right = val.substring(pos),
|
||
|
|
leftChar = left.charAt(left.length - 1),
|
||
|
|
rightChar = right.charAt(0),
|
||
|
|
i;
|
||
|
|
|
||
|
|
if( utils.cursor.selection() === false ){
|
||
|
|
for(i=0; i<charSettings.keyMap.length; i++) {
|
||
|
|
if (charSettings.keyMap[i].open == leftChar && charSettings.keyMap[i].close == rightChar) {
|
||
|
|
var edited = val.substring(0,pos-1) + val.substring(pos+1);
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos - 1);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var edited = val.substring(0,pos-1) + val.substring(pos);
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos - 1);
|
||
|
|
} else {
|
||
|
|
var sel = utils.cursor.selection(),
|
||
|
|
edited = val.substring(0,sel.start) + val.substring(sel.end);
|
||
|
|
utils.editor.set(edited);
|
||
|
|
utils.cursor.set(pos);
|
||
|
|
}
|
||
|
|
|
||
|
|
utils._callHook('delete:after');
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
charFuncs = {
|
||
|
|
openedChar: function (_char, e) {
|
||
|
|
utils.preventDefaultEvent(e);
|
||
|
|
utils._callHook('openChar:before');
|
||
|
|
var pos = utils.cursor.get(),
|
||
|
|
val = utils.editor.get(),
|
||
|
|
left = val.substring(0, pos),
|
||
|
|
right = val.substring(pos),
|
||
|
|
edited = left + _char.open + _char.close + right;
|
||
|
|
|
||
|
|
defaults.textarea.value = edited;
|
||
|
|
utils.cursor.set(pos + 1);
|
||
|
|
utils._callHook('openChar:after');
|
||
|
|
},
|
||
|
|
closedChar: function (_char, e) {
|
||
|
|
var pos = utils.cursor.get(),
|
||
|
|
val = utils.editor.get(),
|
||
|
|
toOverwrite = val.substring(pos, pos + 1);
|
||
|
|
if (toOverwrite == _char.close) {
|
||
|
|
utils.preventDefaultEvent(e);
|
||
|
|
utils._callHook('closeChar:before');
|
||
|
|
utils.cursor.set(utils.cursor.get() + 1);
|
||
|
|
utils._callHook('closeChar:after');
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
action = {
|
||
|
|
filter: function (e) {
|
||
|
|
|
||
|
|
if(!utils.fenceRange()){ return; }
|
||
|
|
|
||
|
|
var theCode = e.which || e.keyCode;
|
||
|
|
|
||
|
|
if(theCode == 39 || theCode == 40 && e.which===0){ return; }
|
||
|
|
|
||
|
|
var _char = String.fromCharCode(theCode),
|
||
|
|
i;
|
||
|
|
|
||
|
|
for(i=0; i<charSettings.keyMap.length; i++) {
|
||
|
|
|
||
|
|
if (charSettings.keyMap[i].close == _char) {
|
||
|
|
var didClose = defaults.overwrite && charFuncs.closedChar(charSettings.keyMap[i], e);
|
||
|
|
|
||
|
|
if (!didClose && charSettings.keyMap[i].open == _char && defaults.autoOpen) {
|
||
|
|
charFuncs.openedChar(charSettings.keyMap[i], e);
|
||
|
|
}
|
||
|
|
} else if (charSettings.keyMap[i].open == _char && defaults.autoOpen) {
|
||
|
|
charFuncs.openedChar(charSettings.keyMap[i], e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
listen: function () {
|
||
|
|
|
||
|
|
if(defaults.replaceTab){ utils.addEvent(defaults.textarea, 'keydown', intercept.tabKey); }
|
||
|
|
if(defaults.autoIndent){ utils.addEvent(defaults.textarea, 'keydown', intercept.enterKey); }
|
||
|
|
if(defaults.autoStrip){ utils.addEvent(defaults.textarea, 'keydown', intercept.deleteKey); }
|
||
|
|
|
||
|
|
utils.addEvent(defaults.textarea, 'keypress', action.filter);
|
||
|
|
|
||
|
|
utils.addEvent(defaults.textarea, 'keydown', function(){ utils._callHook('keydown'); });
|
||
|
|
utils.addEvent(defaults.textarea, 'keyup', function(){ utils._callHook('keyup'); });
|
||
|
|
}
|
||
|
|
},
|
||
|
|
init = function (opts) {
|
||
|
|
|
||
|
|
if(opts.textarea){
|
||
|
|
utils._callHook('init:before', false);
|
||
|
|
utils.deepExtend(defaults, opts);
|
||
|
|
utils.defineNewLine();
|
||
|
|
|
||
|
|
if (defaults.softTabs) {
|
||
|
|
tab = " ".repeat(defaults.tabSize);
|
||
|
|
} else {
|
||
|
|
tab = "\t";
|
||
|
|
|
||
|
|
utils.defineTabSize(defaults.tabSize);
|
||
|
|
}
|
||
|
|
|
||
|
|
action.listen();
|
||
|
|
utils._callHook('init:after', false);
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
this.destroy = function(){
|
||
|
|
utils.removeEvent(defaults.textarea, 'keydown', intercept.tabKey);
|
||
|
|
utils.removeEvent(defaults.textarea, 'keydown', intercept.enterKey);
|
||
|
|
utils.removeEvent(defaults.textarea, 'keydown', intercept.deleteKey);
|
||
|
|
utils.removeEvent(defaults.textarea, 'keypress', action.filter);
|
||
|
|
};
|
||
|
|
|
||
|
|
init(userOpts);
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
if (typeof module !== 'undefined' && module.exports) {
|
||
|
|
module.exports = Behave;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof ender === 'undefined') {
|
||
|
|
this.Behave = Behave;
|
||
|
|
this.BehaveHooks = BehaveHooks;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof define === "function" && define.amd) {
|
||
|
|
define("behave", [], function () {
|
||
|
|
return Behave;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
}).call(this);
|