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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/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    // default search panel location
  17    CodeMirror.defineOption("search", {bottom: false});
  18  
  19    function dialog(cm, text, shortText, deflt, f) {
  20      if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true, bottom: cm.options.search.bottom});
  21      else f(prompt(shortText, deflt));
  22    }
  23  
  24    function getJumpDialog(cm) {
  25      return cm.phrase("Jump to line:") + ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use line:column or scroll% syntax)") + '</span>';
  26    }
  27  
  28    function interpretLine(cm, string) {
  29      var num = Number(string)
  30      if (/^[-+]/.test(string)) return cm.getCursor().line + num
  31      else return num - 1
  32    }
  33  
  34    CodeMirror.commands.jumpToLine = function(cm) {
  35      var cur = cm.getCursor();
  36      dialog(cm, getJumpDialog(cm), cm.phrase("Jump to line:"), (cur.line + 1) + ":" + cur.ch, function(posStr) {
  37        if (!posStr) return;
  38  
  39        var match;
  40        if (match = /^\s*([\+\-]?\d+)\s*\:\s*(\d+)\s*$/.exec(posStr)) {
  41          cm.setCursor(interpretLine(cm, match[1]), Number(match[2]))
  42        } else if (match = /^\s*([\+\-]?\d+(\.\d+)?)\%\s*/.exec(posStr)) {
  43          var line = Math.round(cm.lineCount() * Number(match[1]) / 100);
  44          if (/^[-+]/.test(match[1])) line = cur.line + line + 1;
  45          cm.setCursor(line - 1, cur.ch);
  46        } else if (match = /^\s*\:?\s*([\+\-]?\d+)\s*/.exec(posStr)) {
  47          cm.setCursor(interpretLine(cm, match[1]), cur.ch);
  48        }
  49      });
  50    };
  51  
  52    CodeMirror.keyMap["default"]["Alt-G"] = "jumpToLine";
  53  });