├── .gitignore ├── example.html ├── README.md └── behave.js /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | .DS_Store 3 | -------------------------------------------------------------------------------- /example.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Behave 6 | 7 | 26 | 27 | 28 | 29 |

Example

30 | 31 | 32 | 33 | 34 | 52 | 53 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

2 | 3 | ## What? 4 | Behave.js is a lightweight library for adding IDE style behaviors to plain text areas, making it much more enjoyable to write code in. 5 | * Supports Partial IE6, IE7+, Firefox 8+, Safari 4+, Chrome X+, Opera 12 6 | * No Dependencies 7 | * Custom Code/Behavior Fencing 8 | * Hard and Soft Tabs 9 | * Auto Open/Close Paranthesis, Brackets, Braces, Double and Single Quotes 10 | * Auto delete a paired character 11 | * Overwrite a paired character 12 | * Multi-line Indentation/Unindentation 13 | * Automatic Indentation 14 | 15 | ## Usage 16 | ```javascript 17 | var editor = new Behave({ 18 | textarea: document.getElementById('myTextarea') 19 | }); 20 | ``` 21 | 22 | ## Defaults and Options 23 | ```javascript 24 | var editor = new Behave({ 25 | textarea: null, 26 | replaceTab: true, 27 | softTabs: true, 28 | tabSize: 4, 29 | autoOpen: true, 30 | overwrite: true, 31 | autoStrip: true, 32 | autoIndent: true, 33 | fence: false 34 | }); 35 | ``` 36 |

38 | textarea : Textarea element to apply the behaviors to 39 |
41 | replaceTab : If set to true, replaceTab does three different things:
42 |
- Pressing the tab key will insert a tab instead of cycle input focus.
- If you are holding shift, and there is a full tab before your cursor (whatever your tab may be), it will unindent.
- If you have a range selected, both of the above rules will apply to all lines selected (multi-line indent/unindent)
47 | 48 |
50 | softTabs : If set to true, spaces will be used instead of a tab character 51 |
53 | tabSize : If softTabs is set to true, the number of spaces used is defined here. If set to false, the CSS property tab-size will be used to define hard tab sizes. 54 |
56 | autoOpen : If any of the following characters are typed, their counterparts are automatically added: 57 |
- ( adds )
- { adds }
- [ adds ]
- " adds "
- ' adds '
64 |
66 | overwrite : If you type a closing character directly before an identical character, it will overwrite it instead of adding it. Best used with autoOpen set to true 67 |
69 | autoStrip : If set to true, and your cursor is between two paired characters, pressing backspace will delete both instead of just the first 70 |
72 | autoIndent : If set to true, automatic indentation of your code will be attempted. Best used with autoOpen set to true 73 |
75 | fence : If you do not want to add behaviors to an entire textarea, you may use a fence. A fence is a string, any set of characters you want to denote where behaviors should be added. The format is Fence, New Line, Code, New Line, Fence. 76 |

78 | 79 | 80 | ## Methods 81 | ```javascript 82 | editor.destroy(); 83 | ``` 84 |

destroy : Removes all event listeners from your textarea

87 | 88 | 89 | ## License 90 | **MIT Licensing** 91 |

92 |

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

93 |

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

94 |

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

95 | 96 | -------------------------------------------------------------------------------- /behave.js: -------------------------------------------------------------------------------- 1 | (function(undefined){ 2 | 3 | 'use strict'; 4 | 5 | var Behave = Behave || function (userOpts) { 6 | 7 | if (typeof String.prototype.repeat !== 'function') { 8 | String.prototype.repeat = function(times) { 9 | if(times < 1){ 10 | return ''; 11 | } 12 | if(times % 2){ 13 | return this.repeat(times - 1) + this; 14 | } 15 | var half = this.repeat(times / 2); 16 | return half + half; 17 | }; 18 | } 19 | 20 | if (typeof Array.prototype.filter !== 'function') { 21 | Array.prototype.filter = function(func /*, thisp */) { 22 | if (this === null) { 23 | throw new TypeError(); 24 | } 25 | 26 | var t = Object(this), 27 | len = t.length >>> 0; 28 | if (typeof func != "function"){ 29 | throw new TypeError(); 30 | } 31 | var res = [], 32 | thisp = arguments[1]; 33 | for (var i = 0; i < len; i++) { 34 | if (i in t) { 35 | var val = t[i]; 36 | if (func.call(thisp, val, i, t)) { 37 | res.push(val); 38 | } 39 | } 40 | } 41 | return res; 42 | }; 43 | } 44 | 45 | var defaults = { 46 | textarea: null, 47 | replaceTab: true, 48 | softTabs: true, 49 | tabSize: 4, 50 | autoOpen: true, 51 | overwrite: true, 52 | autoStrip: true, 53 | autoIndent: true, 54 | fence: false 55 | }, 56 | tab, 57 | newLine, 58 | charSettings = { 59 | 60 | keyMap: [ 61 | { open: "\"", close: "\"", canBreak: false }, 62 | { open: "'", close: "'", canBreak: false }, 63 | { open: "(", close: ")", canBreak: false }, 64 | { open: "[", close: "]", canBreak: true }, 65 | { open: "{", close: "}", canBreak: true } 66 | ] 67 | 68 | }, 69 | utils = { 70 | defineNewLine: function(){ 71 | var ta = document.createElement('textarea'); 72 | ta.value = "\n"; 73 | 74 | if(ta.value.length==2){ 75 | newLine = "\r\n"; 76 | } else { 77 | newLine = "\n"; 78 | } 79 | }, 80 | defineTabSize: function(tabSize){ 81 | if(typeof defaults.textarea.style.OTabSize != "undefined"){ 82 | defaults.textarea.style.OTabSize = tabSize; return; 83 | } 84 | if(typeof defaults.textarea.style.MozTabSize != "undefined"){ 85 | defaults.textarea.style.MozTabSize = tabSize; return; 86 | } 87 | if(typeof defaults.textarea.style.tabSize != "undefined"){ 88 | defaults.textarea.style.tabSize = tabSize; return; 89 | } 90 | }, 91 | cursor: { 92 | get: function() { 93 | 94 | if (typeof document.createElement('textarea').selectionStart==="number") { 95 | return defaults.textarea.selectionStart; 96 | } else if (document.selection) { 97 | var caretPos = 0, 98 | range = defaults.textarea.createTextRange(), 99 | rangeDupe = document.selection.createRange().duplicate(), 100 | rangeDupeBookmark = rangeDupe.getBookmark(); 101 | range.moveToBookmark(rangeDupeBookmark); 102 | 103 | while (range.moveStart('character' , -1) !== 0) { 104 | caretPos++; 105 | } 106 | return caretPos; 107 | } 108 | }, 109 | set: function (start, end) { 110 | if(!end){ 111 | end = start; 112 | } 113 | if (defaults.textarea.setSelectionRange) { 114 | defaults.textarea.focus(); 115 | defaults.textarea.setSelectionRange(start, end); 116 | } else if (defaults.textarea.createTextRange) { 117 | var range = defaults.textarea.createTextRange(); 118 | range.collapse(true); 119 | range.moveEnd('character', end); 120 | range.moveStart('character', start); 121 | range.select(); 122 | } 123 | }, 124 | selection: function(){ 125 | var textAreaElement = defaults.textarea, 126 | start = 0, 127 | end = 0, 128 | normalizedValue, 129 | range, 130 | textInputRange, 131 | len, 132 | endRange; 133 | 134 | if (typeof textAreaElement.selectionStart == "number" && typeof textAreaElement.selectionEnd == "number") { 135 | start = textAreaElement.selectionStart; 136 | end = textAreaElement.selectionEnd; 137 | } else { 138 | range = document.selection.createRange(); 139 | 140 | if (range && range.parentElement() == textAreaElement) { 141 | 142 | normalizedValue = utils.editor.get(); 143 | len = normalizedValue.length; 144 | 145 | textInputRange = textAreaElement.createTextRange(); 146 | textInputRange.moveToBookmark(range.getBookmark()); 147 | 148 | endRange = textAreaElement.createTextRange(); 149 | endRange.collapse(false); 150 | 151 | if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) { 152 | start = end = len; 153 | } else { 154 | start = -textInputRange.moveStart("character", -len); 155 | start += normalizedValue.slice(0, start).split(newLine).length - 1; 156 | 157 | if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) { 158 | end = len; 159 | } else { 160 | end = -textInputRange.moveEnd("character", -len); 161 | end += normalizedValue.slice(0, end).split(newLine).length - 1; 162 | } 163 | } 164 | } 165 | } 166 | 167 | return start==end ? false : { 168 | start: start, 169 | end: end 170 | }; 171 | } 172 | }, 173 | editor: { 174 | get: function(){ 175 | return defaults.textarea.value.replace(/\r/g,''); 176 | }, 177 | set: function(data){ 178 | defaults.textarea.value = data; 179 | } 180 | }, 181 | fenceRange: function(){ 182 | if(typeof defaults.fence == "string"){ 183 | 184 | var data = utils.editor.get(), 185 | pos = utils.cursor.get(), 186 | hacked = 0, 187 | matchedFence = data.indexOf(defaults.fence), 188 | matchCase = 0; 189 | 190 | while(matchedFence>=0){ 191 | matchCase++; 192 | if( pos < (matchedFence+hacked) ){ 193 | break; 194 | } 195 | 196 | hacked += matchedFence+defaults.fence.length; 197 | data = data.substring(matchedFence+defaults.fence.length); 198 | matchedFence = data.indexOf(defaults.fence); 199 | 200 | } 201 | 202 | if( (hacked) < pos && ( (matchedFence+hacked) > pos ) && matchCase%2===0){ 203 | return true; 204 | } 205 | return false; 206 | } else { 207 | return true; 208 | } 209 | }, 210 | isEven: function(_this,i){ 211 | return i%2; 212 | }, 213 | levelsDeep: function(){ 214 | var pos = utils.cursor.get(), 215 | val = utils.editor.get(); 216 | 217 | var left = val.substring(0, pos), 218 | levels = 0, 219 | i, j; 220 | 221 | for(i=0; i=0 ? finalLevels : 0; 248 | }, 249 | deepExtend: function(destination, source) { 250 | for (var property in source) { 251 | if (source[property] && source[property].constructor && 252 | source[property].constructor === Object) { 253 | destination[property] = destination[property] || {}; 254 | utils.deepExtend(destination[property], source[property]); 255 | } else { 256 | destination[property] = source[property]; 257 | } 258 | } 259 | return destination; 260 | }, 261 | addEvent: function addEvent(element, eventName, func) { 262 | if (element.addEventListener){ 263 | element.addEventListener(eventName,func,false); 264 | } else if (element.attachEvent) { 265 | element.attachEvent("on"+eventName, func); 266 | } 267 | }, 268 | preventDefaultEvent: function(e){ 269 | if(e.preventDefault){ 270 | e.preventDefault(); 271 | } else { 272 | e.returnValue = false; 273 | } 274 | } 275 | }, 276 | intercept = { 277 | tabKey: function (e) { 278 | 279 | if(!utils.fenceRange()){ return; } 280 | 281 | if (e.keyCode == 9) { 282 | utils.preventDefaultEvent(e); 283 | 284 | var selection = utils.cursor.selection(), 285 | pos = utils.cursor.get(), 286 | val = utils.editor.get(); 287 | 288 | if(selection){ 289 | 290 | var tempStart = selection.start; 291 | while(tempStart--){ 292 | if(val.charAt(tempStart)=="\n"){ 293 | selection.start = tempStart + 1; 294 | break; 295 | } 296 | } 297 | 298 | var toIndent = val.substring(selection.start, selection.end), 299 | lines = toIndent.split("\n"), 300 | i; 301 | 302 | if(e.shiftKey){ 303 | for(i = 0; i