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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var LinkToolbarUI = function()
{
}
LinkToolbarUI.prototype.linkAdded =
function(event)
{
var element = event.originalTarget;
if (element.ownerDocument != getBrowser().contentDocument ||
!linkToolbarUI.isLinkToolbarEnabled() ||
!(ChromeUtils.getClassName(element) === "HTMLLinkElement") ||
!element.href || (!element.rel && !element.rev))
return;
linkToolbarHandler.handle(element);
}
LinkToolbarUI.prototype.isLinkToolbarEnabled =
function()
{
if (document.getElementById("linktoolbar").getAttribute("hidden") == "true")
return false;
else
return true;
}
LinkToolbarUI.prototype.clear =
function(event)
{
if (event.originalTarget != getBrowser().contentDocument ||
!linkToolbarUI.isLinkToolbarEnabled() ||
!linkToolbarHandler.hasItems)
return;
linkToolbarHandler.clearAllItems();
}
LinkToolbarUI.prototype.tabSelected =
function(event)
{
if (event.originalTarget.localName != "tabs" ||
!linkToolbarUI.isLinkToolbarEnabled())
return;
linkToolbarHandler.clearAllItems();
linkToolbarUI.deactivate();
linkToolbarUI.fullSlowRefresh();
}
LinkToolbarUI.prototype.fullSlowRefresh =
function()
{
var currentNode = getBrowser().contentDocument.documentElement;
if (!ChromeUtils.getClassName(currentNode) === "HTMLHtmlElement")
return;
currentNode = currentNode.firstChild;
while(currentNode)
{
if (ChromeUtils.getClassName(currentNode) === "HTMLHeadElement") {
currentNode = currentNode.firstChild;
while(currentNode)
{
if (ChromeUtils.getClassName(currentNode) === "HTMLLinkElement")
linkToolbarUI.linkAdded({originalTarget: currentNode});
currentNode = currentNode.nextSibling;
}
}
else if (currentNode.nodeType == currentNode.ELEMENT_NODE) {
// head is supposed to be the first element inside html.
// Got something else instead. returning
return;
}
else
{
// Got a comment node or something like that. Moving on.
currentNode = currentNode.nextSibling;
}
}
}
LinkToolbarUI.prototype.toolbarActive = false;
LinkToolbarUI.prototype.activate =
function()
{
if (!linkToolbarUI.toolbarActive) {
linkToolbarUI.toolbarActive = true;
document.getElementById("linktoolbar").setAttribute("hasitems", "true");
var contentArea = document.getElementById("appcontent");
contentArea.addEventListener("pagehide", linkToolbarUI.clear, true);
contentArea.addEventListener("pageshow", linkToolbarUI.deactivate, true);
contentArea.addEventListener("DOMHeadLoaded", linkToolbarUI.deactivate,
true);
}
}
LinkToolbarUI.prototype.deactivate =
function()
{
// This function can never be called unless the toolbar is active, because
// it's a handler that's only activated in that situation, so there's no need
// to check toolbarActive. On the other hand, by the time this method is
// called the toolbar might have been populated again already, in which case
// we don't want to deactivate.
if (!linkToolbarHandler.hasItems) {
linkToolbarUI.toolbarActive = false;
document.getElementById("linktoolbar").setAttribute("hasitems", "false");
var contentArea = document.getElementById("appcontent");
contentArea.removeEventListener("pagehide", linkToolbarUI.clear, true);
contentArea.removeEventListener("pageshow", linkToolbarUI.deactivate, true);
contentArea.removeEventListener("DOMHeadLoaded", linkToolbarUI.deactivate,
true);
}
}
/* called whenever something on the toolbar gets an oncommand event */
LinkToolbarUI.prototype.commanded =
function(event)
{
// Return if this is one of the menubuttons.
if (event.target.getAttribute("type") == "menu") return;
if (!event.target.getAttribute("href")) return;
var destURL = event.target.getAttribute("href");
// We have to do a security check here, because we are loading URIs given
// to us by a web page from chrome, which is privileged.
try {
urlSecurityCheck(destURL, content.document.nodePrincipal,
Ci.nsIScriptSecurityManager.STANDARD);
loadURI(destURL, content.document.documentURIObject);
} catch (e) {
dump("Error: it is not permitted to load this URI from a <link> element: " + e);
}
}
// functions for twiddling XUL elements in the toolbar
LinkToolbarUI.prototype.toggleLinkToolbar =
function(checkedItem)
{
this.goToggleTristateToolbar("linktoolbar", checkedItem);
this.initHandlers();
if (this.isLinkToolbarEnabled())
this.fullSlowRefresh();
else
linkToolbarHandler.clearAllItems();
}
LinkToolbarUI.prototype.initLinkbarVisibilityMenu =
function()
{
var state = document.getElementById("linktoolbar").getAttribute("hidden");
if (!state)
state = "maybe";
var checkedItem = document.getElementById("cmd_viewlinktoolbar_" + state);
checkedItem.setAttribute("checked", true);
checkedItem.checked = true;
}
LinkToolbarUI.prototype.goToggleTristateToolbar =
function(id, checkedItem)
{
var toolbar = document.getElementById(id);
if (toolbar)
{
toolbar.setAttribute("hidden", checkedItem.value);
document.persist(id, "hidden");
}
}
LinkToolbarUI.prototype.addHandlerActive = false;
LinkToolbarUI.prototype.initialized = false;
LinkToolbarUI.prototype.initHandlers =
function()
{
var contentArea = document.getElementById("appcontent");
if (linkToolbarUI.isLinkToolbarEnabled())
{
if (!linkToolbarUI.addHandlerActive) {
contentArea.addEventListener("select", linkToolbarUI.tabSelected);
contentArea.addEventListener("DOMLinkAdded", linkToolbarUI.linkAdded,
true);
linkToolbarUI.addHandlerActive = true;
}
} else
{
if (linkToolbarUI.addHandlerActive) {
contentArea.removeEventListener("select", linkToolbarUI.tabSelected);
contentArea.removeEventListener("DOMLinkAdded", linkToolbarUI.linkAdded,
true);
linkToolbarUI.addHandlerActive = false;
}
}
if (!linkToolbarUI.initialized)
{
linkToolbarUI.initialized = true;
document.removeEventListener("pageshow", linkToolbarUI.initHandlers, true);
}
}
var linkToolbarUI = new LinkToolbarUI;
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