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 in_module(null);
   9
  10 define_variable("clicks_in_new_buffer_button", 1,
  11                 "Which mouse button should open links in a new buffer. " +
  12                 "0 = left, 1 = middle, 2 = right. Default is 1.");
  13
  14 define_variable("clicks_in_new_buffer_target", OPEN_NEW_BUFFER,
  15                 "How to open links in a new buffer, in the foreground or " +
  16                 "the background. Set to one the constants OPEN_NEW_BUFFER " +
  17                 "or OPEN_NEW_BUFFER_BACKGROUND. Default is OPEN_NEW_BUFFER.");
  18
  19 // Should mouse click event propagation be stopped?
  20 var clicks_in_new_buffer_ev_stop_prop = true;
  21
  22 function find_tag_in_parents (tag, element) {
  23     // FIXME If tag names will always be upper-case, toLowerCase() can
  24     //       be eliminated. Also not sure that p will ever be null.
  25     tag = tag.toLowerCase();
  26     for (let p = element.parentNode;
  27          p != null && p.tagName.toLowerCase() != "html";
  28          p = p.parentNode)
  29     {
  30         if (p.tagName.toLowerCase() == tag)
  31             return p;
  32     }
  33     return null;
  34 }
  35
  36 function open_link_in_new_buffer (event) {
  37     if (event.button != clicks_in_new_buffer_button)
  38         return;
  39     let element = event.target;
  40     let anchor = null;
  41     if (element instanceof Ci.nsIDOMHTMLAnchorElement ||
  42         element instanceof Ci.nsIDOMHTMLAreaElement)
  43     {
  44         anchor = element;
  45     } else
  46         anchor = find_tag_in_parents("a", element);
  47     if (anchor == null)
  48         return;
  49     event.preventDefault();
  50     if (clicks_in_new_buffer_ev_stop_prop)
  51         event.stopPropagation();
  52     let spec = load_spec(anchor);
  53     let window = this.ownerDocument.defaultView;
  54     let buffer = window.buffers.current;
  55     create_buffer(window,
  56                   buffer_creator(content_buffer,
  57                                  $opener = buffer,
  58                                  $load = spec),
  59                   clicks_in_new_buffer_target);
  60 }
  61
  62 function clicks_in_new_buffer_add_listener (buffer) {
  63     buffer.browser.addEventListener("click",
  64                                     open_link_in_new_buffer,
  65                                     true);
  66 }
  67
  68 function clicks_in_new_buffer_remove_listener (buffer) {
  69     buffer.browser.removeEventListener("click",
  70                                        open_link_in_new_buffer,
  71                                        true);
  72 }
  73
  74 function clicks_in_new_buffer_mode_enable () {
  75     add_hook("create_buffer_hook",
  76              clicks_in_new_buffer_add_listener);
  77     for_each_buffer(clicks_in_new_buffer_add_listener);
  78 }
  79
  80 function clicks_in_new_buffer_mode_disable () {
  81     remove_hook("create_buffer_hook",
  82                 clicks_in_new_buffer_add_listener);
  83     for_each_buffer(clicks_in_new_buffer_remove_listener);
  84 }
  85
  86 define_global_mode("clicks_in_new_buffer_mode",
  87                    clicks_in_new_buffer_mode_enable,
  88                    clicks_in_new_buffer_mode_disable);
  89
  90 clicks_in_new_buffer_mode(true);
  91
  92 provide("clicks-in-new-buffer");