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 function caret_modality (buffer, elem) {
  10     buffer.keymaps.push(caret_keymap);
  11 }
  12
  13 define_buffer_mode('caret_mode',
  14     function enable (buffer) {
  15         buffer.browser.setAttribute('showcaret', 'true');
  16         var sc = buffer.focused_selection_controller;
  17         sc.setCaretEnabled(true);
  18         buffer.top_frame.focus();
  19         buffer.modalities.push(caret_modality);
  20         buffer.set_input_mode();
  21     },
  22     function disable (buffer) {
  23         buffer.browser.setAttribute('showcaret', 'false');
  24         var sc = buffer.focused_selection_controller;
  25         sc.setCaretEnabled(false);
  26         buffer.browser.focus();
  27         var i = buffer.modalities.indexOf(caret_modality);
  28         if (i > -1)
  29             buffer.modalities.splice(i, 1);
  30         buffer.set_input_mode();
  31     },
  32     $display_name = 'CARET');
  33
  34 function caret_mode_enable (buffer) {
  35     caret_mode.enable(buffer);
  36 }
  37
  38 watch_pref('accessibility.browsewithcaret',
  39            function caret_toggle_all_buffers () {
  40                if (get_pref('accessibility.browsewithcaret')) {
  41                    for_each_buffer(function (buffer) {
  42                        caret_mode(buffer, true);
  43                    });
  44                    add_hook('create_buffer_hook', caret_mode_enable);
  45                } else {
  46                    for_each_buffer(function (buffer) {
  47                        caret_mode(buffer, false);
  48                    });
  49                    remove_hook('create_buffer_hook', caret_mode_enable);
  50                }
  51            });
  52
  53 provide("caret");