modules/clicks-in-new-buffer.js

   1 /**
   2  * (C) Copyright 2008 Nicholas Zigarovich
   3  *
   4  * Use, modification, and distribution are subject to the terms specified in the
   5  * COPYING file.
   6 **/
   7
   8 define_variable("clicks_in_new_buffer_button", 1,
   9                 "Which mouse button should open links in a new buffer. " +
  10                 "0 = left, 1 = middle, 2 = right. Default is 1.");
  11
  12 define_variable("clicks_in_new_buffer_target", OPEN_NEW_BUFFER,
  13                 "How to open links in a new buffer, in the foreground or " +
  14                 "the background. Set to one the constants OPEN_NEW_BUFFER " +
  15                 "or OPEN_NEW_BUFFER_BACKGROUND. Default is OPEN_NEW_BUFFER.");
  16
  17 // Should mouse click event propagation be stopped?
  18 var clicks_in_new_buffer_ev_stop_prop = true;
  19
  20 function find_tag_in_parents (tag, element) {
  21     // FIXME If tag names will always be upper-case, toLowerCase() can
  22     //       be eliminated. Also not sure that p will ever be null.
  23     tag = tag.toLowerCase();
  24     for (let p = element.parentNode;
  25          p != null && p.tagName.toLowerCase() != "html";
  26          p = p.parentNode)
  27     {
  28         if (p.tagName.toLowerCase() == tag)
  29             return p;
  30     }
  31     return null;
  32 }
  33
  34 function open_link_in_new_buffer (event) {
  35     if (event.button != clicks_in_new_buffer_button)
  36         return;
  37     let element = event.target;
  38     let anchor = null;
  39     if (element instanceof Ci.nsIDOMHTMLAnchorElement ||
  40         element instanceof Ci.nsIDOMHTMLAreaElement)
  41     {
  42         anchor = element;
  43     } else
  44         anchor = find_tag_in_parents("a", element);
  45     if (anchor == null)
  46         return;
  47     event.preventDefault();
  48     if (clicks_in_new_buffer_ev_stop_prop)
  49         event.stopPropagation();
  50     let spec = load_spec(anchor);
  51     let window = this.ownerDocument.defaultView;
  52     let buffer = window.buffers.current;
  53     create_buffer(window,
  54                   buffer_creator(content_buffer,
  55                                  $opener = buffer,
  56                                  $load = spec),
  57                   clicks_in_new_buffer_target);
  58 }
  59
  60 function clicks_in_new_buffer_add_listener (buffer) {
  61     buffer.browser.addEventListener("click",
  62                                     open_link_in_new_buffer,
  63                                     true);
  64 }
  65
  66 function clicks_in_new_buffer_remove_listener (buffer) {
  67     buffer.browser.removeEventListener("click",
  68                                        open_link_in_new_buffer,
  69                                        true);
  70 }
  71
  72 function clicks_in_new_buffer_mode_enable () {
  73     add_hook("create_buffer_hook",
  74              clicks_in_new_buffer_add_listener);
  75     for_each_buffer(clicks_in_new_buffer_add_listener);
  76 }
  77
  78 function clicks_in_new_buffer_mode_disable () {
  79     remove_hook("create_buffer_hook",
  80                 clicks_in_new_buffer_add_listener);
  81     for_each_buffer(clicks_in_new_buffer_remove_listener);
  82 }
  83
  84 define_global_mode("clicks_in_new_buffer_mode",
  85                    clicks_in_new_buffer_mode_enable,
  86                    clicks_in_new_buffer_mode_disable);
  87
  88 clicks_in_new_buffer_mode(true);
  89
  90 provide("clicks-in-new-buffer");