modules/caret.js

   1 /**
   2  * (C) Copyright 2007-2008 Jeremy Maitin-Shepard
   3  * (C) Copyright 2008-2009 John J. Foerch
   4  *
   5  * Use, modification, and distribution are subject to the terms specified in the
   6  * COPYING file.
   7 **/
   8
   9 in_module(null);
  10
  11 function caret_modality (buffer, elem) {
  12     buffer.keymaps.push(caret_keymap);
  13 }
  14
  15 define_buffer_mode('caret_mode',
  16     function enable (buffer) {
  17         buffer.browser.setAttribute('showcaret', 'true');
  18         var sc = buffer.focused_selection_controller;
  19         sc.setCaretEnabled(true);
  20         buffer.top_frame.focus();
  21         buffer.modalities.push(caret_modality);
  22         buffer.set_input_mode();
  23     },
  24     function disable (buffer) {
  25         buffer.browser.setAttribute('showcaret', 'false');
  26         var sc = buffer.focused_selection_controller;
  27         sc.setCaretEnabled(false);
  28         buffer.browser.focus();
  29         var i = buffer.modalities.indexOf(caret_modality);
  30         if (i > -1)
  31             buffer.modalities.splice(i, 1);
  32         buffer.set_input_mode();
  33     },
  34     $display_name = 'CARET');
  35
  36 function caret_mode_enable (buffer) {
  37     caret_mode.enable(buffer);
  38 }
  39
  40 watch_pref('accessibility.browsewithcaret',
  41            function caret_toggle_all_buffers () {
  42                if (get_pref('accessibility.browsewithcaret')) {
  43                    for_each_buffer(function (buffer) {
  44                        caret_mode(buffer, true);
  45                    });
  46                    add_hook('create_buffer_hook', caret_mode_enable);
  47                } else {
  48                    for_each_buffer(function (buffer) {
  49                        caret_mode(buffer, false);
  50                    });
  51                    remove_hook('create_buffer_hook', caret_mode_enable);
  52                }
  53            });
  54
  55 provide("caret");