mirror of
https://github.com/rn10950/RetroZilla.git
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258 lines
8.4 KiB
JavaScript
258 lines
8.4 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Eric Hodel's <drbrain@segment7.net> code.
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*
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* The Initial Developer of the Original Code is
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* Eric Hodel.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Christopher Hoess <choess@force.stwing.upenn.edu>
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* Tim Taylor <tim@tool-man.org>
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* Henri Sivonen <henris@clinet.fi>
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* Stuart Ballard <sballard@netreach.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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var LinkToolbarUI = function()
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{
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}
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LinkToolbarUI.prototype.linkAdded =
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function(event)
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{
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var element = event.originalTarget;
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if (element.ownerDocument != getBrowser().contentDocument ||
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!linkToolbarUI.isLinkToolbarEnabled() ||
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!element instanceof Components.interfaces.nsIDOMHTMLLinkElement ||
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!element.href || (!element.rel && !element.rev))
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return;
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linkToolbarHandler.handle(element);
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}
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LinkToolbarUI.prototype.isLinkToolbarEnabled =
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function()
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{
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if (document.getElementById("linktoolbar").getAttribute("hidden") == "true")
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return false;
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else
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return true;
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}
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LinkToolbarUI.prototype.clear =
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function(event)
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{
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if (event.originalTarget != getBrowser().contentDocument ||
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!linkToolbarUI.isLinkToolbarEnabled() ||
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!linkToolbarHandler.hasItems)
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return;
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linkToolbarHandler.clearAllItems();
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}
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LinkToolbarUI.prototype.tabSelected =
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function(event)
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{
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if (event.originalTarget.localName != "tabs" ||
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!linkToolbarUI.isLinkToolbarEnabled())
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return;
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linkToolbarHandler.clearAllItems();
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linkToolbarUI.deactivate();
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linkToolbarUI.fullSlowRefresh();
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}
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LinkToolbarUI.prototype.fullSlowRefresh =
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function()
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{
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var currentNode = getBrowser().contentDocument.documentElement;
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if (!(currentNode instanceof Components.interfaces.nsIDOMHTMLHtmlElement))
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return;
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currentNode = currentNode.firstChild;
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while(currentNode)
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{
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if (currentNode instanceof Components.interfaces.nsIDOMHTMLHeadElement) {
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currentNode = currentNode.firstChild;
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while(currentNode)
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{
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if (currentNode instanceof Components.interfaces.nsIDOMHTMLLinkElement)
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linkToolbarUI.linkAdded({originalTarget: currentNode});
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currentNode = currentNode.nextSibling;
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}
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}
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else if (currentNode instanceof Components.interfaces.nsIDOMElement)
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{
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// head is supposed to be the first element inside html.
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// Got something else instead. returning
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return;
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}
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else
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{
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// Got a comment node or something like that. Moving on.
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currentNode = currentNode.nextSibling;
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}
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}
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}
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LinkToolbarUI.prototype.toolbarActive = false;
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LinkToolbarUI.prototype.activate =
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function()
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{
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if (!linkToolbarUI.toolbarActive) {
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linkToolbarUI.toolbarActive = true;
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document.getElementById("linktoolbar").setAttribute("hasitems", "true");
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var contentArea = document.getElementById("appcontent");
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contentArea.addEventListener("pagehide", linkToolbarUI.clear, true);
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contentArea.addEventListener("pageshow", linkToolbarUI.deactivate, true);
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contentArea.addEventListener("DOMHeadLoaded", linkToolbarUI.deactivate,
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true);
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}
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}
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LinkToolbarUI.prototype.deactivate =
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function()
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{
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// This function can never be called unless the toolbar is active, because
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// it's a handler that's only activated in that situation, so there's no need
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// to check toolbarActive. On the other hand, by the time this method is
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// called the toolbar might have been populated again already, in which case
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// we don't want to deactivate.
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if (!linkToolbarHandler.hasItems) {
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linkToolbarUI.toolbarActive = false;
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document.getElementById("linktoolbar").setAttribute("hasitems", "false");
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var contentArea = document.getElementById("appcontent");
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contentArea.removeEventListener("pagehide", linkToolbarUI.clear, true);
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contentArea.removeEventListener("pageshow", linkToolbarUI.deactivate, true);
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contentArea.removeEventListener("DOMHeadLoaded", linkToolbarUI.deactivate,
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true);
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}
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}
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/* called whenever something on the toolbar gets an oncommand event */
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LinkToolbarUI.prototype.commanded =
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function(event)
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{
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// Return if this is one of the menubuttons.
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if (event.target.getAttribute("type") == "menu") return;
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if (!event.target.getAttribute("href")) return;
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var destURL = event.target.getAttribute("href");
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// We have to do a security check here, because we are loading URIs given
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// to us by a web page from chrome, which is privileged.
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try {
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var ssm = Components.classes["@mozilla.org/scriptsecuritymanager;1"].getService().
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QueryInterface(Components.interfaces.nsIScriptSecurityManager);
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ssm.checkLoadURIStr(window.content.location.href, destURL, 0);
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var referrer =
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Components.classes["@mozilla.org/network/standard-url;1"].
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createInstance(Components.interfaces.nsIURI);
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referrer.spec = window.content.location.href;
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loadURI(destURL, referrer);
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} catch (e) {
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dump("Error: it is not permitted to load this URI from a <link> element: " + e);
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}
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}
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// functions for twiddling XUL elements in the toolbar
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LinkToolbarUI.prototype.toggleLinkToolbar =
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function(checkedItem)
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{
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this.goToggleTristateToolbar("linktoolbar", checkedItem);
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this.initHandlers();
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if (this.isLinkToolbarEnabled())
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this.fullSlowRefresh();
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else
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linkToolbarHandler.clearAllItems();
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}
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LinkToolbarUI.prototype.initLinkbarVisibilityMenu =
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function()
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{
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var state = document.getElementById("linktoolbar").getAttribute("hidden");
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if (!state)
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state = "maybe";
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var checkedItem = document.getElementById("cmd_viewlinktoolbar_" + state);
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checkedItem.setAttribute("checked", true);
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checkedItem.checked = true;
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}
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LinkToolbarUI.prototype.goToggleTristateToolbar =
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function(id, checkedItem)
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{
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var toolbar = document.getElementById(id);
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if (toolbar)
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{
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toolbar.setAttribute("hidden", checkedItem.value);
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document.persist(id, "hidden");
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}
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}
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LinkToolbarUI.prototype.addHandlerActive = false;
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LinkToolbarUI.prototype.initialized = false;
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LinkToolbarUI.prototype.initHandlers =
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function()
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{
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var contentArea = document.getElementById("appcontent");
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if (linkToolbarUI.isLinkToolbarEnabled())
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{
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if (!linkToolbarUI.addHandlerActive) {
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contentArea.addEventListener("select", linkToolbarUI.tabSelected,
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false);
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contentArea.addEventListener("DOMLinkAdded", linkToolbarUI.linkAdded,
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true);
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linkToolbarUI.addHandlerActive = true;
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}
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} else
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{
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if (linkToolbarUI.addHandlerActive) {
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contentArea.removeEventListener("select", linkToolbarUI.tabSelected,
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false);
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contentArea.removeEventListener("DOMLinkAdded", linkToolbarUI.linkAdded,
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true);
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linkToolbarUI.addHandlerActive = false;
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}
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}
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if (!linkToolbarUI.initialized)
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{
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linkToolbarUI.initialized = true;
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document.removeEventListener("pageshow", linkToolbarUI.initHandlers, true);
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}
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}
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const linkToolbarUI = new LinkToolbarUI;
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