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jump-to-line.js (1940B)


      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: http://codemirror.net/LICENSE
      3 
      4 // Defines jumpToLine command. Uses dialog.js if present.
      5 
      6 (function(mod) {
      7   if (typeof exports == "object" && typeof module == "object") // CommonJS
      8     mod(require("../../lib/codemirror"), require("../dialog/dialog"));
      9   else if (typeof define == "function" && define.amd) // AMD
     10     define(["../../lib/codemirror", "../dialog/dialog"], mod);
     11   else // Plain browser env
     12     mod(CodeMirror);
     13 })(function(CodeMirror) {
     14   "use strict";
     15 
     16   function dialog(cm, text, shortText, deflt, f) {
     17     if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
     18     else f(prompt(shortText, deflt));
     19   }
     20 
     21   var jumpDialog =
     22       'Jump to line: <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">(Use line:column or scroll% syntax)</span>';
     23 
     24   function interpretLine(cm, string) {
     25     var num = Number(string)
     26     if (/^[-+]/.test(string)) return cm.getCursor().line + num
     27     else return num - 1
     28   }
     29 
     30   CodeMirror.commands.jumpToLine = function(cm) {
     31     var cur = cm.getCursor();
     32     dialog(cm, jumpDialog, "Jump to line:", (cur.line + 1) + ":" + cur.ch, function(posStr) {
     33       if (!posStr) return;
     34 
     35       var match;
     36       if (match = /^\s*([\+\-]?\d+)\s*\:\s*(\d+)\s*$/.exec(posStr)) {
     37         cm.setCursor(interpretLine(cm, match[1]), Number(match[2]))
     38       } else if (match = /^\s*([\+\-]?\d+(\.\d+)?)\%\s*/.exec(posStr)) {
     39         var line = Math.round(cm.lineCount() * Number(match[1]) / 100);
     40         if (/^[-+]/.test(match[1])) line = cur.line + line + 1;
     41         cm.setCursor(line - 1, cur.ch);
     42       } else if (match = /^\s*\:?\s*([\+\-]?\d+)\s*/.exec(posStr)) {
     43         cm.setCursor(interpretLine(cm, match[1]), cur.ch);
     44       }
     45     });
     46   };
     47 
     48   CodeMirror.keyMap["default"]["Alt-G"] = "jumpToLine";
     49 });