toolkit/modules/BrowserUtils.jsm@6474c204b198 (annotated)
toolkit/modules/BrowserUtils.jsm
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | "use strict"; |
| michael@0 | 6 | |
| michael@0 | 7 | this.EXPORTED_SYMBOLS = [ "BrowserUtils" ]; |
| michael@0 | 8 | |
| michael@0 | 9 | const {interfaces: Ci, utils: Cu, classes: Cc} = Components; |
| michael@0 | 10 | |
| michael@0 | 11 | Cu.import("resource://gre/modules/Services.jsm"); |
| michael@0 | 12 | |
| michael@0 | 13 | this.BrowserUtils = { |
| michael@0 | 14 | |
| michael@0 | 15 | /** |
| michael@0 | 16 | * urlSecurityCheck: JavaScript wrapper for checkLoadURIWithPrincipal |
| michael@0 | 17 | * and checkLoadURIStrWithPrincipal. |
| michael@0 | 18 | * If |aPrincipal| is not allowed to link to |aURL|, this function throws with |
| michael@0 | 19 | * an error message. |
| michael@0 | 20 | * |
| michael@0 | 21 | * @param aURL |
| michael@0 | 22 | * The URL a page has linked to. This could be passed either as a string |
| michael@0 | 23 | * or as a nsIURI object. |
| michael@0 | 24 | * @param aPrincipal |
| michael@0 | 25 | * The principal of the document from which aURL came. |
| michael@0 | 26 | * @param aFlags |
| michael@0 | 27 | * Flags to be passed to checkLoadURIStr. If undefined, |
| michael@0 | 28 | * nsIScriptSecurityManager.STANDARD will be passed. |
| michael@0 | 29 | */ |
| michael@0 | 30 | urlSecurityCheck: function(aURL, aPrincipal, aFlags) { |
| michael@0 | 31 | var secMan = Services.scriptSecurityManager; |
| michael@0 | 32 | if (aFlags === undefined) { |
| michael@0 | 33 | aFlags = secMan.STANDARD; |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | try { |
| michael@0 | 37 | if (aURL instanceof Ci.nsIURI) |
| michael@0 | 38 | secMan.checkLoadURIWithPrincipal(aPrincipal, aURL, aFlags); |
| michael@0 | 39 | else |
| michael@0 | 40 | secMan.checkLoadURIStrWithPrincipal(aPrincipal, aURL, aFlags); |
| michael@0 | 41 | } catch (e) { |
| michael@0 | 42 | let principalStr = ""; |
| michael@0 | 43 | try { |
| michael@0 | 44 | principalStr = " from " + aPrincipal.URI.spec; |
| michael@0 | 45 | } |
| michael@0 | 46 | catch(e2) { } |
| michael@0 | 47 | |
| michael@0 | 48 | throw "Load of " + aURL + principalStr + " denied."; |
| michael@0 | 49 | } |
| michael@0 | 50 | }, |
| michael@0 | 51 | |
| michael@0 | 52 | /** |
| michael@0 | 53 | * Constructs a new URI, using nsIIOService. |
| michael@0 | 54 | * @param aURL The URI spec. |
| michael@0 | 55 | * @param aOriginCharset The charset of the URI. |
| michael@0 | 56 | * @param aBaseURI Base URI to resolve aURL, or null. |
| michael@0 | 57 | * @return an nsIURI object based on aURL. |
| michael@0 | 58 | */ |
| michael@0 | 59 | makeURI: function(aURL, aOriginCharset, aBaseURI) { |
| michael@0 | 60 | return Services.io.newURI(aURL, aOriginCharset, aBaseURI); |
| michael@0 | 61 | }, |
| michael@0 | 62 | |
| michael@0 | 63 | makeFileURI: function(aFile) { |
| michael@0 | 64 | return Services.io.newFileURI(aFile); |
| michael@0 | 65 | }, |
| michael@0 | 66 | |
| michael@0 | 67 | /** |
| michael@0 | 68 | * Return the current focus element and window. If the current focus |
| michael@0 | 69 | * is in a content process, then this function returns CPOWs |
| michael@0 | 70 | * (cross-process object wrappers) that refer to the focused |
| michael@0 | 71 | * items. Note that calling this function synchronously contacts the |
| michael@0 | 72 | * content process, which may block for a long time. |
| michael@0 | 73 | * |
| michael@0 | 74 | * @param document The document in question. |
| michael@0 | 75 | * @return [focusedElement, focusedWindow] |
| michael@0 | 76 | */ |
| michael@0 | 77 | getFocusSync: function(document) { |
| michael@0 | 78 | let elt = document.commandDispatcher.focusedElement; |
| michael@0 | 79 | var window = document.commandDispatcher.focusedWindow; |
| michael@0 | 80 | |
| michael@0 | 81 | const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"; |
| michael@0 | 82 | if (elt instanceof window.XULElement && |
| michael@0 | 83 | elt.localName == "browser" && |
| michael@0 | 84 | elt.namespaceURI == XUL_NS && |
| michael@0 | 85 | elt.getAttribute("remote")) { |
| michael@0 | 86 | [elt, window] = elt.syncHandler.getFocusedElementAndWindow(); |
| michael@0 | 87 | } |
| michael@0 | 88 | |
| michael@0 | 89 | return [elt, window]; |
| michael@0 | 90 | }, |
| michael@0 | 91 | |
| michael@0 | 92 | /** |
| michael@0 | 93 | * For a given DOM element, returns its position in "screen" |
| michael@0 | 94 | * coordinates. In a content process, the coordinates returned will |
| michael@0 | 95 | * be relative to the left/top of the tab. In the chrome process, |
| michael@0 | 96 | * the coordinates are relative to the user's screen. |
| michael@0 | 97 | */ |
| michael@0 | 98 | getElementBoundingScreenRect: function(aElement) { |
| michael@0 | 99 | let rect = aElement.getBoundingClientRect(); |
| michael@0 | 100 | let window = aElement.ownerDocument.defaultView; |
| michael@0 | 101 | |
| michael@0 | 102 | // We need to compensate for any iframes that might shift things |
| michael@0 | 103 | // over. We also need to compensate for zooming. |
| michael@0 | 104 | let fullZoom = window.getInterface(Ci.nsIDOMWindowUtils).fullZoom; |
| michael@0 | 105 | rect = { |
| michael@0 | 106 | left: (rect.left + window.mozInnerScreenX) * fullZoom, |
| michael@0 | 107 | top: (rect.top + window.mozInnerScreenY) * fullZoom, |
| michael@0 | 108 | width: rect.width * fullZoom, |
| michael@0 | 109 | height: rect.height * fullZoom |
| michael@0 | 110 | }; |
| michael@0 | 111 | |
| michael@0 | 112 | return rect; |
| michael@0 | 113 | }, |
| michael@0 | 114 | |
| michael@0 | 115 | }; |
