tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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editor-commands-controller.js (2382B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 "use strict";
      6 
      7 /**
      8 * The source editor exposes XUL commands that can be used when embedded in a XUL
      9 * document. This controller drives the availability and behavior of the commands. When
     10 * the editor input field is focused, this controller will update the matching menu item
     11 * entries found in application menus or context menus.
     12 */
     13 
     14 /**
     15 * Returns a controller object that can be used for editor-specific commands:
     16 * - find
     17 * - find again
     18 * - go to line
     19 * - undo
     20 * - redo
     21 * - delete
     22 * - select all
     23 */
     24 function createController(ed) {
     25  return {
     26    supportsCommand(cmd) {
     27      switch (cmd) {
     28        case "cmd_find":
     29        case "cmd_findAgain":
     30        case "cmd_gotoLine":
     31        case "cmd_undo":
     32        case "cmd_redo":
     33        case "cmd_delete":
     34        case "cmd_selectAll":
     35          return true;
     36      }
     37 
     38      return false;
     39    },
     40 
     41    isCommandEnabled(cmd) {
     42      const cm = ed.codeMirror;
     43 
     44      switch (cmd) {
     45        case "cmd_find":
     46        case "cmd_gotoLine":
     47        case "cmd_selectAll":
     48          return true;
     49        case "cmd_findAgain":
     50          return cm.state.search != null && cm.state.search.query != null;
     51        case "cmd_undo":
     52          return ed.canUndo();
     53        case "cmd_redo":
     54          return ed.canRedo();
     55        case "cmd_delete":
     56          return ed.somethingSelected();
     57      }
     58 
     59      return false;
     60    },
     61 
     62    doCommand(cmd) {
     63      const cm = ed.codeMirror;
     64 
     65      const map = {
     66        cmd_selectAll: "selectAll",
     67        cmd_find: "find",
     68        cmd_undo: "undo",
     69        cmd_redo: "redo",
     70        cmd_delete: "delCharAfter",
     71        cmd_findAgain: "findNext",
     72      };
     73 
     74      if (map[cmd]) {
     75        cm.execCommand(map[cmd]);
     76        return;
     77      }
     78 
     79      if (cmd == "cmd_gotoLine") {
     80        ed.jumpToLine();
     81      }
     82    },
     83 
     84    onEvent() {},
     85  };
     86 }
     87 
     88 /**
     89 * Create and insert a commands controller for the provided SourceEditor instance.
     90 */
     91 function insertCommandsController(sourceEditor) {
     92  const input = sourceEditor.codeMirror.getInputField();
     93  const controller = createController(sourceEditor);
     94  input.controllers.insertControllerAt(0, controller);
     95 }
     96 
     97 module.exports = { insertCommandsController };