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gecko/browser/base/content/nsContextMenu.js
Dão Gottwald f7fa537188 Bug 506861 - make more use of makeURI(). r=gavin
2009-07-29 07:55:18 +02:00

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# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 1998
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Blake Ross <blake@cs.stanford.edu>
# David Hyatt <hyatt@mozilla.org>
# Peter Annema <disttsc@bart.nl>
# Dean Tessman <dean_tessman@hotmail.com>
# Kevin Puetz <puetzk@iastate.edu>
# Ben Goodger <ben@netscape.com>
# Pierre Chanial <chanial@noos.fr>
# Jason Eager <jce2@po.cwru.edu>
# Joe Hewitt <hewitt@netscape.com>
# Alec Flett <alecf@netscape.com>
# Asaf Romano <mozilla.mano@sent.com>
# Jason Barnabe <jason_barnabe@fastmail.fm>
# Peter Parente <parente@cs.unc.edu>
# Giorgio Maone <g.maone@informaction.com>
# Tom Germeau <tom.germeau@epigoon.com>
# Jesse Ruderman <jruderman@gmail.com>
# Joe Hughes <joe@retrovirus.com>
# Pamela Greene <pamg.bugs@gmail.com>
# Michael Ventnor <ventnors_dogs234@yahoo.com.au>
# Simon Bünzli <zeniko@gmail.com>
# Gijs Kruitbosch <gijskruitbosch@gmail.com>
# Ehsan Akhgari <ehsan.akhgari@gmail.com>
# Dan Mosedale <dmose@mozilla.org>
# Justin Dolske <dolske@mozilla.com>
# Kathleen Brade <brade@pearlcrescent.com>
# Mark Smith <mcs@pearlcrescent.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
function nsContextMenu(aXulMenu, aBrowser) {
this.target = null;
this.browser = null;
this.menu = null;
this.isFrameImage = false;
this.onTextInput = false;
this.onKeywordField = false;
this.onImage = false;
this.onLoadedImage = false;
this.onCompletedImage = false;
this.onCanvas = false;
this.onVideo = false;
this.onAudio = false;
this.onLink = false;
this.onMailtoLink = false;
this.onSaveableLink = false;
this.onMetaDataItem = false;
this.onMathML = false;
this.link = false;
this.linkURL = "";
this.linkURI = null;
this.linkProtocol = null;
this.inFrame = false;
this.hasBGImage = false;
this.isTextSelected = false;
this.isContentSelected = false;
this.shouldDisplay = true;
this.isDesignMode = false;
this.possibleSpellChecking = false;
this.ellipsis = "\u2026";
try {
this.ellipsis = gPrefService.getComplexValue("intl.ellipsis",
Ci.nsIPrefLocalizedString).data;
} catch (e) { }
// Initialize new menu.
this.initMenu(aXulMenu, aBrowser);
}
// Prototype for nsContextMenu "class."
nsContextMenu.prototype = {
// onDestroy is a no-op at this point.
onDestroy: function () {
},
// Initialize context menu.
initMenu: function CM_initMenu(aPopup, aBrowser) {
this.menu = aPopup;
this.browser = aBrowser;
this.isFrameImage = document.getElementById("isFrameImage");
// Get contextual info.
this.setTarget(document.popupNode, document.popupRangeParent,
document.popupRangeOffset);
this.isTextSelected = this.isTextSelection();
this.isContentSelected = this.isContentSelection();
// Initialize (disable/remove) menu items.
this.initItems();
},
initItems: function CM_initItems() {
this.initOpenItems();
this.initNavigationItems();
this.initViewItems();
this.initMiscItems();
this.initSpellingItems();
this.initSaveItems();
this.initClipboardItems();
this.initMetadataItems();
this.initMediaPlayerItems();
},
initOpenItems: function CM_initOpenItems() {
var isMailtoInternal = false;
if (this.onMailtoLink) {
var mailtoHandler = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
getService(Ci.nsIExternalProtocolService).
getProtocolHandlerInfo("mailto");
isMailtoInternal = (!mailtoHandler.alwaysAskBeforeHandling &&
mailtoHandler.preferredAction == Ci.nsIHandlerInfo.useHelperApp &&
(mailtoHandler.preferredApplicationHandler instanceof Ci.nsIWebHandlerApp));
}
var shouldShow = this.onSaveableLink || isMailtoInternal;
this.showItem("context-openlink", shouldShow);
this.showItem("context-openlinkintab", shouldShow);
this.showItem("context-sep-open", shouldShow);
},
initNavigationItems: function CM_initNavigationItems() {
var shouldShow = !(this.isContentSelected || this.onLink || this.onImage ||
this.onCanvas || this.onVideo || this.onAudio ||
this.onTextInput);
this.showItem("context-back", shouldShow);
this.showItem("context-forward", shouldShow);
this.showItem("context-reload", shouldShow);
this.showItem("context-stop", shouldShow);
this.showItem("context-sep-stop", shouldShow);
// XXX: Stop is determined in browser.js; the canStop broadcaster is broken
//this.setItemAttrFromNode( "context-stop", "disabled", "canStop" );
},
initSaveItems: function CM_initSaveItems() {
var shouldShow = !(this.onTextInput || this.onLink ||
this.isContentSelected || this.onImage ||
this.onCanvas || this.onVideo || this.onAudio);
this.showItem("context-savepage", shouldShow);
this.showItem("context-sendpage", shouldShow);
// Save+Send link depends on whether we're in a link.
this.showItem("context-savelink", this.onSaveableLink);
this.showItem("context-sendlink", this.onSaveableLink);
// Save image depends on having loaded its content, video and audio don't.
this.showItem("context-saveimage", this.onLoadedImage || this.onCanvas);
this.showItem("context-savevideo", this.onVideo);
this.showItem("context-saveaudio", this.onAudio);
this.setItemAttr("context-savevideo", "disabled", !this.mediaURL);
this.setItemAttr("context-saveaudio", "disabled", !this.mediaURL);
// Send media URL (but not for canvas, since it's a big data: URL)
this.showItem("context-sendimage", this.onImage);
this.showItem("context-sendvideo", this.onVideo);
this.showItem("context-sendaudio", this.onAudio);
this.setItemAttr("context-sendvideo", "disabled", !this.mediaURL);
this.setItemAttr("context-sendaudio", "disabled", !this.mediaURL);
},
initViewItems: function CM_initViewItems() {
// View source is always OK, unless in directory listing.
this.showItem("context-viewpartialsource-selection",
this.isContentSelected);
this.showItem("context-viewpartialsource-mathml",
this.onMathML && !this.isContentSelected);
var shouldShow = !(this.isContentSelected ||
this.onImage || this.onCanvas ||
this.onVideo || this.onAudio ||
this.onLink || this.onTextInput);
this.showItem("context-viewsource", shouldShow);
this.showItem("context-viewinfo", shouldShow);
this.showItem("context-sep-properties",
!(this.isContentSelected ||
this.onTextInput || this.onCanvas ||
this.onVideo || this.onAudio));
// Set as Desktop background depends on whether an image was clicked on,
// and only works if we have a shell service.
var haveSetDesktopBackground = false;
#ifdef HAVE_SHELL_SERVICE
// Only enable Set as Desktop Background if we can get the shell service.
var shell = getShellService();
if (shell)
haveSetDesktopBackground = true;
#endif
this.showItem("context-setDesktopBackground",
haveSetDesktopBackground && this.onLoadedImage);
if (haveSetDesktopBackground && this.onLoadedImage) {
document.getElementById("context-setDesktopBackground")
.disabled = this.disableSetDesktopBackground();
}
// Reload image depends on an image that's not fully loaded
this.showItem("context-reloadimage", (this.onImage && !this.onCompletedImage));
// View image depends on having an image that's not standalone
// (or is in a frame), or a canvas.
this.showItem("context-viewimage", (this.onImage &&
(!this.onStandaloneImage || this.inFrame)) || this.onCanvas);
this.showItem("context-viewvideo", this.onVideo);
this.setItemAttr("context-viewvideo", "disabled", !this.mediaURL);
// View background image depends on whether there is one.
this.showItem("context-viewbgimage", shouldShow);
this.showItem("context-sep-viewbgimage", shouldShow);
document.getElementById("context-viewbgimage")
.disabled = !this.hasBGImage;
},
initMiscItems: function CM_initMiscItems() {
// Use "Bookmark This Link" if on a link.
this.showItem("context-bookmarkpage",
!(this.isContentSelected || this.onTextInput || this.onLink ||
this.onImage || this.onVideo || this.onAudio));
this.showItem("context-bookmarklink", this.onLink && !this.onMailtoLink);
this.showItem("context-searchselect", this.isTextSelected);
this.showItem("context-keywordfield",
this.onTextInput && this.onKeywordField);
this.showItem("frame", this.inFrame);
this.showItem("frame-sep", this.inFrame);
// Hide menu entries for images, show otherwise
if (this.inFrame) {
if (mimeTypeIsTextBased(this.target.ownerDocument.contentType))
this.isFrameImage.removeAttribute('hidden');
else
this.isFrameImage.setAttribute('hidden', 'true');
}
// BiDi UI
this.showItem("context-sep-bidi", top.gBidiUI);
this.showItem("context-bidi-text-direction-toggle",
this.onTextInput && top.gBidiUI);
this.showItem("context-bidi-page-direction-toggle",
!this.onTextInput && top.gBidiUI);
if (this.onImage) {
var blockImage = document.getElementById("context-blockimage");
var uri = this.target
.QueryInterface(Ci.nsIImageLoadingContent)
.currentURI;
// this throws if the image URI doesn't have a host (eg, data: image URIs)
// see bug 293758 for details
var hostLabel = "";
try {
hostLabel = uri.host;
} catch (ex) { }
if (hostLabel) {
var shortenedUriHost = hostLabel.replace(/^www\./i,"");
if (shortenedUriHost.length > 15)
shortenedUriHost = shortenedUriHost.substr(0,15) + this.ellipsis;
blockImage.label = gNavigatorBundle.getFormattedString("blockImages", [shortenedUriHost]);
if (this.isImageBlocked())
blockImage.setAttribute("checked", "true");
else
blockImage.removeAttribute("checked");
}
}
// Only show the block image item if the image can be blocked
this.showItem("context-blockimage", this.onImage && hostLabel &&
!gPrivateBrowsingUI.privateBrowsingEnabled);
},
initSpellingItems: function() {
var canSpell = InlineSpellCheckerUI.canSpellCheck;
var onMisspelling = InlineSpellCheckerUI.overMisspelling;
this.showItem("spell-check-enabled", canSpell);
this.showItem("spell-separator", canSpell || this.possibleSpellChecking);
if (canSpell) {
document.getElementById("spell-check-enabled")
.setAttribute("checked", InlineSpellCheckerUI.enabled);
}
this.showItem("spell-add-to-dictionary", onMisspelling);
// suggestion list
this.showItem("spell-suggestions-separator", onMisspelling);
if (onMisspelling) {
var menu = document.getElementById("contentAreaContextMenu");
var suggestionsSeparator =
document.getElementById("spell-add-to-dictionary");
var numsug = InlineSpellCheckerUI.addSuggestionsToMenu(menu, suggestionsSeparator, 5);
this.showItem("spell-no-suggestions", numsug == 0);
}
else
this.showItem("spell-no-suggestions", false);
// dictionary list
this.showItem("spell-dictionaries", InlineSpellCheckerUI.enabled);
if (canSpell) {
var dictMenu = document.getElementById("spell-dictionaries-menu");
var dictSep = document.getElementById("spell-language-separator");
InlineSpellCheckerUI.addDictionaryListToMenu(dictMenu, dictSep);
this.showItem("spell-add-dictionaries-main", false);
}
else if (this.possibleSpellChecking) {
// when there is no spellchecker but we might be able to spellcheck
// add the add to dictionaries item. This will ensure that people
// with no dictionaries will be able to download them
this.showItem("spell-add-dictionaries-main", true);
}
else
this.showItem("spell-add-dictionaries-main", false);
},
initClipboardItems: function() {
// Copy depends on whether there is selected text.
// Enabling this context menu item is now done through the global
// command updating system
// this.setItemAttr( "context-copy", "disabled", !this.isTextSelected() );
goUpdateGlobalEditMenuItems();
this.showItem("context-undo", this.onTextInput);
this.showItem("context-sep-undo", this.onTextInput);
this.showItem("context-cut", this.onTextInput);
this.showItem("context-copy",
this.isContentSelected || this.onTextInput);
this.showItem("context-paste", this.onTextInput);
this.showItem("context-delete", this.onTextInput);
this.showItem("context-sep-paste", this.onTextInput);
this.showItem("context-selectall", !(this.onLink || this.onImage ||
this.onVideo || this.onAudio) || this.isDesignMode);
this.showItem("context-sep-selectall", this.isContentSelected );
// XXX dr
// ------
// nsDocumentViewer.cpp has code to determine whether we're
// on a link or an image. we really ought to be using that...
// Copy email link depends on whether we're on an email link.
this.showItem("context-copyemail", this.onMailtoLink);
// Copy link location depends on whether we're on a non-mailto link.
this.showItem("context-copylink", this.onLink && !this.onMailtoLink);
this.showItem("context-sep-copylink", this.onLink &&
(this.onImage || this.onVideo || this.onAudio));
#ifdef CONTEXT_COPY_IMAGE_CONTENTS
// Copy image contents depends on whether we're on an image.
this.showItem("context-copyimage-contents", this.onImage);
#endif
// Copy image location depends on whether we're on an image.
this.showItem("context-copyimage", this.onImage);
this.showItem("context-copyvideourl", this.onVideo);
this.showItem("context-copyaudiourl", this.onAudio);
this.setItemAttr("context-copyvideourl", "disabled", !this.mediaURL);
this.setItemAttr("context-copyaudiourl", "disabled", !this.mediaURL);
this.showItem("context-sep-copyimage", this.onImage ||
this.onVideo || this.onAudio);
},
initMetadataItems: function() {
// Show if user clicked on something which has metadata.
this.showItem("context-metadata", this.onMetaDataItem);
},
initMediaPlayerItems: function() {
var onMedia = (this.onVideo || this.onAudio);
// Several mutually exclusive items... play/pause, mute/unmute, show/hide
this.showItem("context-media-play", onMedia && (this.target.paused || this.target.ended));
this.showItem("context-media-pause", onMedia && !this.target.paused && !this.target.ended);
this.showItem("context-media-mute", onMedia && !this.target.muted);
this.showItem("context-media-unmute", onMedia && this.target.muted);
this.showItem("context-media-showcontrols", onMedia && !this.target.controls)
this.showItem("context-media-hidecontrols", onMedia && this.target.controls)
// Disable them when there isn't a valid media source loaded.
if (onMedia) {
var hasError = (this.target.error != null);
this.setItemAttr("context-media-play", "disabled", hasError);
this.setItemAttr("context-media-pause", "disabled", hasError);
this.setItemAttr("context-media-mute", "disabled", hasError);
this.setItemAttr("context-media-unmute", "disabled", hasError);
this.setItemAttr("context-media-showcontrols", "disabled", hasError);
this.setItemAttr("context-media-hidecontrols", "disabled", hasError);
}
this.showItem("context-media-sep-commands", onMedia);
},
// Set various context menu attributes based on the state of the world.
setTarget: function (aNode, aRangeParent, aRangeOffset) {
const xulNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
if (aNode.namespaceURI == xulNS ||
this.isTargetAFormControl(aNode)) {
this.shouldDisplay = false;
}
// Initialize contextual info.
this.onImage = false;
this.onLoadedImage = false;
this.onCompletedImage = false;
this.onStandaloneImage = false;
this.onCanvas = false;
this.onVideo = false;
this.onAudio = false;
this.onMetaDataItem = false;
this.onTextInput = false;
this.onKeywordField = false;
this.mediaURL = "";
this.onLink = false;
this.linkURL = "";
this.linkURI = null;
this.linkProtocol = "";
this.onMathML = false;
this.inFrame = false;
this.hasBGImage = false;
this.bgImageURL = "";
this.possibleSpellChecking = false;
// Clear any old spellchecking items from the menu, this used to
// be in the menu hiding code but wasn't getting called in all
// situations. Here, we can ensure it gets cleaned up any time the
// menu is shown. Note: must be before uninit because that clears the
// internal vars
InlineSpellCheckerUI.clearSuggestionsFromMenu();
InlineSpellCheckerUI.clearDictionaryListFromMenu();
InlineSpellCheckerUI.uninit();
// Remember the node that was clicked.
this.target = aNode;
// First, do checks for nodes that never have children.
if (this.target.nodeType == Node.ELEMENT_NODE) {
// See if the user clicked on an image.
if (this.target instanceof Ci.nsIImageLoadingContent &&
this.target.currentURI) {
this.onImage = true;
this.onMetaDataItem = true;
var request =
this.target.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
if (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE))
this.onLoadedImage = true;
if (request && (request.imageStatus & request.STATUS_LOAD_COMPLETE))
this.onCompletedImage = true;
this.mediaURL = this.target.currentURI.spec;
if (this.target.ownerDocument instanceof ImageDocument)
this.onStandaloneImage = true;
}
else if (this.target instanceof HTMLCanvasElement) {
this.onCanvas = true;
}
else if (this.target instanceof HTMLVideoElement) {
this.onVideo = true;
this.mediaURL = this.target.currentSrc || this.target.src;
}
else if (this.target instanceof HTMLAudioElement) {
this.onAudio = true;
this.mediaURL = this.target.currentSrc || this.target.src;
}
else if (this.target instanceof HTMLInputElement ) {
this.onTextInput = this.isTargetATextBox(this.target);
// allow spellchecking UI on all writable text boxes except passwords
if (this.onTextInput && ! this.target.readOnly &&
this.target.type != "password") {
this.possibleSpellChecking = true;
InlineSpellCheckerUI.init(this.target.QueryInterface(Ci.nsIDOMNSEditableElement).editor);
InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
}
this.onKeywordField = this.isTargetAKeywordField(this.target);
}
else if (this.target instanceof HTMLTextAreaElement) {
this.onTextInput = true;
if (!this.target.readOnly) {
this.possibleSpellChecking = true;
InlineSpellCheckerUI.init(this.target.QueryInterface(Ci.nsIDOMNSEditableElement).editor);
InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
}
}
else if (this.target instanceof HTMLHtmlElement) {
var bodyElt = this.target.ownerDocument.body;
if (bodyElt) {
var computedURL = this.getComputedURL(bodyElt, "background-image");
if (computedURL) {
this.hasBGImage = true;
this.bgImageURL = makeURLAbsolute(bodyElt.baseURI,
computedURL);
}
}
}
}
// Second, bubble out, looking for items of interest that can have childen.
// Always pick the innermost link, background image, etc.
const XMLNS = "http://www.w3.org/XML/1998/namespace";
var elem = this.target;
while (elem) {
if (elem.nodeType == Node.ELEMENT_NODE) {
// Link?
if (!this.onLink &&
((elem instanceof HTMLAnchorElement && elem.href) ||
(elem instanceof HTMLAreaElement && elem.href) ||
elem instanceof HTMLLinkElement ||
elem.getAttributeNS("http://www.w3.org/1999/xlink", "type") == "simple")) {
// Target is a link or a descendant of a link.
this.onLink = true;
this.onMetaDataItem = true;
// xxxmpc: this is kind of a hack to work around a Gecko bug (see bug 266932)
// we're going to walk up the DOM looking for a parent link node,
// this shouldn't be necessary, but we're matching the existing behaviour for left click
var realLink = elem;
var parent = elem;
while ((parent = parent.parentNode) &&
(parent.nodeType == Node.ELEMENT_NODE)) {
try {
if ((parent instanceof HTMLAnchorElement && parent.href) ||
(parent instanceof HTMLAreaElement && parent.href) ||
parent instanceof HTMLLinkElement ||
parent.getAttributeNS("http://www.w3.org/1999/xlink", "type") == "simple")
realLink = parent;
} catch (e) { }
}
// Remember corresponding element.
this.link = realLink;
this.linkURL = this.getLinkURL();
this.linkURI = this.getLinkURI();
this.linkProtocol = this.getLinkProtocol();
this.onMailtoLink = (this.linkProtocol == "mailto");
this.onSaveableLink = this.isLinkSaveable( this.link );
}
// Metadata item?
if (!this.onMetaDataItem) {
// We display metadata on anything which fits
// the below test, as well as for links and images
// (which set this.onMetaDataItem to true elsewhere)
if ((elem instanceof HTMLQuoteElement && elem.cite) ||
(elem instanceof HTMLTableElement && elem.summary) ||
(elem instanceof HTMLModElement &&
(elem.cite || elem.dateTime)) ||
(elem instanceof HTMLElement &&
(elem.title || elem.lang)) ||
elem.getAttributeNS(XMLNS, "lang")) {
this.onMetaDataItem = true;
}
}
// Background image? Don't bother if we've already found a
// background image further down the hierarchy. Otherwise,
// we look for the computed background-image style.
if (!this.hasBGImage) {
var bgImgUrl = this.getComputedURL( elem, "background-image" );
if (bgImgUrl) {
this.hasBGImage = true;
this.bgImageURL = makeURLAbsolute(elem.baseURI,
bgImgUrl);
}
}
}
elem = elem.parentNode;
}
// See if the user clicked on MathML
const NS_MathML = "http://www.w3.org/1998/Math/MathML";
if ((this.target.nodeType == Node.TEXT_NODE &&
this.target.parentNode.namespaceURI == NS_MathML)
|| (this.target.namespaceURI == NS_MathML))
this.onMathML = true;
// See if the user clicked in a frame.
var docDefaultView = this.target.ownerDocument.defaultView;
if (docDefaultView != docDefaultView.top)
this.inFrame = true;
// if the document is editable, show context menu like in text inputs
var win = this.target.ownerDocument.defaultView;
if (win) {
var isEditable = false;
try {
var editingSession = win.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIEditingSession);
if (editingSession.windowIsEditable(win) &&
this.getComputedStyle(this.target, "-moz-user-modify") == "read-write") {
isEditable = true;
}
}
catch(ex) {
// If someone built with composer disabled, we can't get an editing session.
}
if (isEditable) {
this.onTextInput = true;
this.onKeywordField = false;
this.onImage = false;
this.onLoadedImage = false;
this.onCompletedImage = false;
this.onMetaDataItem = false;
this.onMathML = false;
this.inFrame = false;
this.hasBGImage = false;
this.isDesignMode = true;
this.possibleSpellChecking = true;
InlineSpellCheckerUI.init(editingSession.getEditorForWindow(win));
var canSpell = InlineSpellCheckerUI.canSpellCheck;
InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
this.showItem("spell-check-enabled", canSpell);
this.showItem("spell-separator", canSpell);
}
}
},
// Returns the computed style attribute for the given element.
getComputedStyle: function(aElem, aProp) {
return aElem.ownerDocument
.defaultView
.getComputedStyle(aElem, "").getPropertyValue(aProp);
},
// Returns a "url"-type computed style attribute value, with the url() stripped.
getComputedURL: function(aElem, aProp) {
var url = aElem.ownerDocument
.defaultView.getComputedStyle(aElem, "")
.getPropertyCSSValue(aProp);
return url.primitiveType == CSSPrimitiveValue.CSS_URI ?
url.getStringValue() : null;
},
// Returns true if clicked-on link targets a resource that can be saved.
isLinkSaveable: function(aLink) {
// We don't do the Right Thing for news/snews yet, so turn them off
// until we do.
return this.linkProtocol && !(
this.linkProtocol == "mailto" ||
this.linkProtocol == "javascript" ||
this.linkProtocol == "news" ||
this.linkProtocol == "snews" );
},
// Open linked-to URL in a new window.
openLink : function () {
openNewWindowWith(this.linkURL, this.target.ownerDocument, null, false);
},
// Open linked-to URL in a new tab.
openLinkInTab: function() {
openNewTabWith(this.linkURL, this.target.ownerDocument, null, null, false);
},
// Open frame in a new tab.
openFrameInTab: function() {
var doc = this.target.ownerDocument;
var frameURL = doc.location.href;
var referrer = doc.referrer;
return openNewTabWith(frameURL, null, null, null, false,
referrer ? makeURI(referrer) : null);
},
// Reload clicked-in frame.
reloadFrame: function() {
this.target.ownerDocument.location.reload();
},
// Open clicked-in frame in its own window.
openFrame: function() {
var doc = this.target.ownerDocument;
var frameURL = doc.location.href;
var referrer = doc.referrer;
return openNewWindowWith(frameURL, null, null, false,
referrer ? makeURI(referrer) : null);
},
// Open clicked-in frame in the same window.
showOnlyThisFrame: function() {
var doc = this.target.ownerDocument;
var frameURL = doc.location.href;
urlSecurityCheck(frameURL, this.browser.contentPrincipal,
Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
var referrer = doc.referrer;
this.browser.loadURI(frameURL, referrer ? makeURI(referrer) : null);
},
// View Partial Source
viewPartialSource: function(aContext) {
var focusedWindow = document.commandDispatcher.focusedWindow;
if (focusedWindow == window)
focusedWindow = content;
var docCharset = null;
if (focusedWindow)
docCharset = "charset=" + focusedWindow.document.characterSet;
// "View Selection Source" and others such as "View MathML Source"
// are mutually exclusive, with the precedence given to the selection
// when there is one
var reference = null;
if (aContext == "selection")
reference = focusedWindow.getSelection();
else if (aContext == "mathml")
reference = this.target;
else
throw "not reached";
// unused (and play nice for fragments generated via XSLT too)
var docUrl = null;
window.openDialog("chrome://global/content/viewPartialSource.xul",
"_blank", "scrollbars,resizable,chrome,dialog=no",
docUrl, docCharset, reference, aContext);
},
// Open new "view source" window with the frame's URL.
viewFrameSource: function() {
BrowserViewSourceOfDocument(this.target.ownerDocument);
},
viewInfo: function() {
BrowserPageInfo(this.target.ownerDocument.defaultView.top.document);
},
viewFrameInfo: function() {
BrowserPageInfo(this.target.ownerDocument);
},
reloadImage: function(e) {
urlSecurityCheck(this.mediaURL,
this.browser.contentPrincipal,
Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
if (this.target instanceof Ci.nsIImageLoadingContent)
this.target.forceReload();
},
// Change current window to the URL of the image, video, or audio.
viewMedia: function(e) {
var viewURL;
if (this.onCanvas)
viewURL = this.target.toDataURL();
else {
viewURL = this.mediaURL;
urlSecurityCheck(viewURL,
this.browser.contentPrincipal,
Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
}
var doc = this.target.ownerDocument;
openUILink(viewURL, e, null, null, null, null, doc.documentURIObject );
},
// Change current window to the URL of the background image.
viewBGImage: function(e) {
urlSecurityCheck(this.bgImageURL,
this.browser.contentPrincipal,
Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
var doc = this.target.ownerDocument;
openUILink(this.bgImageURL, e, null, null, null, null, doc.documentURIObject );
},
disableSetDesktopBackground: function() {
// Disable the Set as Desktop Background menu item if we're still trying
// to load the image or the load failed.
if (!(this.target instanceof Ci.nsIImageLoadingContent))
return true;
if (("complete" in this.target) && !this.target.complete)
return true;
if (this.target.currentURI.schemeIs("javascript"))
return true;
var request = this.target
.QueryInterface(Ci.nsIImageLoadingContent)
.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
if (!request)
return true;
return false;
},
setDesktopBackground: function() {
// Paranoia: check disableSetDesktopBackground again, in case the
// image changed since the context menu was initiated.
if (this.disableSetDesktopBackground())
return;
urlSecurityCheck(this.target.currentURI.spec,
this.target.ownerDocument.nodePrincipal);
// Confirm since it's annoying if you hit this accidentally.
const kDesktopBackgroundURL =
"chrome://browser/content/setDesktopBackground.xul";
#ifdef XP_MACOSX
// On Mac, the Set Desktop Background window is not modal.
// Don't open more than one Set Desktop Background window.
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(Components.interfaces.nsIWindowMediator);
var dbWin = wm.getMostRecentWindow("Shell:SetDesktopBackground");
if (dbWin) {
dbWin.gSetBackground.init(this.target);
dbWin.focus();
}
else {
openDialog(kDesktopBackgroundURL, "",
"centerscreen,chrome,dialog=no,dependent,resizable=no",
this.target);
}
#else
// On non-Mac platforms, the Set Wallpaper dialog is modal.
openDialog(kDesktopBackgroundURL, "",
"centerscreen,chrome,dialog,modal,dependent",
this.target);
#endif
},
// Save URL of clicked-on frame.
saveFrame: function () {
saveDocument(this.target.ownerDocument);
},
// Save URL of clicked-on link.
saveLink: function() {
// canonical def in nsURILoader.h
const NS_ERROR_SAVE_LINK_AS_TIMEOUT = 0x805d0020;
var doc = this.target.ownerDocument;
urlSecurityCheck(this.linkURL, doc.nodePrincipal);
var linkText = this.linkText();
var linkURL = this.linkURL;
// an object to proxy the data through to
// nsIExternalHelperAppService.doContent, which will wait for the
// appropriate MIME-type headers and then prompt the user with a
// file picker
function saveAsListener() {}
saveAsListener.prototype = {
extListener: null,
onStartRequest: function saveLinkAs_onStartRequest(aRequest, aContext) {
// if the timer fired, the error status will have been caused by that,
// and we'll be restarting in onStopRequest, so no reason to notify
// the user
if (aRequest.status == NS_ERROR_SAVE_LINK_AS_TIMEOUT)
return;
timer.cancel();
// some other error occured; notify the user...
if (!Components.isSuccessCode(aRequest.status)) {
try {
const sbs = Cc["@mozilla.org/intl/stringbundle;1"].
getService(Ci.nsIStringBundleService);
const bundle = sbs.createBundle(
"chrome://mozapps/locale/downloads/downloads.properties");
const title = bundle.GetStringFromName("downloadErrorAlertTitle");
const msg = bundle.GetStringFromName("downloadErrorGeneric");
const promptSvc = Cc["@mozilla.org/embedcomp/prompt-service;1"].
getService(Ci.nsIPromptService);
promptSvc.alert(doc.defaultView, title, msg);
} catch (ex) {}
return;
}
var extHelperAppSvc =
Cc["@mozilla.org/uriloader/external-helper-app-service;1"].
getService(Ci.nsIExternalHelperAppService);
var channel = aRequest.QueryInterface(Ci.nsIChannel);
this.extListener =
extHelperAppSvc.doContent(channel.contentType, aRequest,
doc.defaultView, true);
this.extListener.onStartRequest(aRequest, aContext);
},
onStopRequest: function saveLinkAs_onStopRequest(aRequest, aContext,
aStatusCode) {
if (aStatusCode == NS_ERROR_SAVE_LINK_AS_TIMEOUT) {
// do it the old fashioned way, which will pick the best filename
// it can without waiting.
saveURL(linkURL, linkText, null, true, false, doc.documentURIObject);
}
if (this.extListener)
this.extListener.onStopRequest(aRequest, aContext, aStatusCode);
},
onDataAvailable: function saveLinkAs_onDataAvailable(aRequest, aContext,
aInputStream,
aOffset, aCount) {
this.extListener.onDataAvailable(aRequest, aContext, aInputStream,
aOffset, aCount);
}
}
// in case we need to prompt the user for authentication
function callbacks() {}
callbacks.prototype = {
getInterface: function sLA_callbacks_getInterface(aIID) {
if (aIID.equals(Ci.nsIAuthPrompt) || aIID.equals(Ci.nsIAuthPrompt2)) {
var ww = Cc["@mozilla.org/embedcomp/window-watcher;1"].
getService(Ci.nsIPromptFactory);
return ww.getPrompt(doc.defaultView, aIID);
}
throw Cr.NS_ERROR_NO_INTERFACE;
}
}
// if it we don't have the headers after a short time, the user
// won't have received any feedback from their click. that's bad. so
// we give up waiting for the filename.
function timerCallback() {}
timerCallback.prototype = {
notify: function sLA_timer_notify(aTimer) {
channel.cancel(NS_ERROR_SAVE_LINK_AS_TIMEOUT);
return;
}
}
// set up a channel to do the saving
var ioService = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
var channel = ioService.newChannelFromURI(this.getLinkURI());
channel.notificationCallbacks = new callbacks();
channel.loadFlags |= Ci.nsIRequest.LOAD_BYPASS_CACHE |
Ci.nsIChannel.LOAD_CALL_CONTENT_SNIFFERS;
if (channel instanceof Ci.nsIHttpChannel) {
channel.referrer = doc.documentURIObject;
if (channel instanceof Ci.nsIHttpChannelInternal)
channel.forceAllowThirdPartyCookie = true;
}
// fallback to the old way if we don't see the headers quickly
var timeToWait =
gPrefService.getIntPref("browser.download.saveLinkAsFilenameTimeout");
var timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
timer.initWithCallback(new timerCallback(), timeToWait,
timer.TYPE_ONE_SHOT);
// kick off the channel with our proxy object as the listener
channel.asyncOpen(new saveAsListener(), null);
},
sendLink: function() {
// we don't know the title of the link so pass in an empty string
MailIntegration.sendMessage( this.linkURL, "" );
},
// Backwards-compatability wrapper
saveImage : function() {
if (this.onCanvas || this.onImage)
this.saveMedia();
},
// Save URL of the clicked upon image, video, or audio.
saveMedia: function() {
var doc = this.target.ownerDocument;
if (this.onCanvas) {
// Bypass cache, since it's a data: URL.
saveImageURL(this.target.toDataURL(), "canvas.png", "SaveImageTitle",
true, false, doc.documentURIObject);
}
else if (this.onImage) {
urlSecurityCheck(this.mediaURL, doc.nodePrincipal);
saveImageURL(this.mediaURL, null, "SaveImageTitle", false,
false, doc.documentURIObject);
}
else if (this.onVideo || this.onAudio) {
urlSecurityCheck(this.mediaURL, doc.nodePrincipal);
var dialogTitle = this.onVideo ? "SaveVideoTitle" : "SaveAudioTitle";
saveURL(this.mediaURL, null, dialogTitle, false,
false, doc.documentURIObject);
}
},
// Backwards-compatability wrapper
sendImage : function() {
if (this.onCanvas || this.onImage)
this.sendMedia();
},
sendMedia: function() {
MailIntegration.sendMessage(this.mediaURL, "");
},
toggleImageBlocking: function(aBlock) {
var permissionmanager = Cc["@mozilla.org/permissionmanager;1"].
getService(Ci.nsIPermissionManager);
var uri = this.target.QueryInterface(Ci.nsIImageLoadingContent).currentURI;
if (aBlock)
permissionmanager.add(uri, "image", Ci.nsIPermissionManager.DENY_ACTION);
else
permissionmanager.remove(uri.host, "image");
var brandBundle = document.getElementById("bundle_brand");
var app = brandBundle.getString("brandShortName");
var message = gNavigatorBundle.getFormattedString(aBlock ?
"imageBlockedWarning" : "imageAllowedWarning", [app, uri.host]);
var notificationBox = this.browser.getNotificationBox();
var notification = notificationBox.getNotificationWithValue("images-blocked");
if (notification)
notification.label = message;
else {
var self = this;
var buttons = [{
label: gNavigatorBundle.getString("undo"),
accessKey: gNavigatorBundle.getString("undo.accessKey"),
callback: function() { self.toggleImageBlocking(!aBlock); }
}];
const priority = notificationBox.PRIORITY_WARNING_MEDIUM;
notificationBox.appendNotification(message, "images-blocked",
"chrome://browser/skin/Info.png",
priority, buttons);
}
// Reload the page to show the effect instantly
BrowserReload();
},
isImageBlocked: function() {
var permissionmanager = Cc["@mozilla.org/permissionmanager;1"].
getService(Ci.nsIPermissionManager);
var uri = this.target.QueryInterface(Ci.nsIImageLoadingContent).currentURI;
return permissionmanager.testPermission(uri, "image") == Ci.nsIPermissionManager.DENY_ACTION;
},
// Generate email address and put it on clipboard.
copyEmail: function() {
// Copy the comma-separated list of email addresses only.
// There are other ways of embedding email addresses in a mailto:
// link, but such complex parsing is beyond us.
var url = this.linkURL;
var qmark = url.indexOf("?");
var addresses;
// 7 == length of "mailto:"
addresses = qmark > 7 ? url.substring(7, qmark) : url.substr(7);
// Let's try to unescape it using a character set
// in case the address is not ASCII.
try {
var characterSet = this.target.ownerDocument.characterSet;
const textToSubURI = Cc["@mozilla.org/intl/texttosuburi;1"].
getService(Ci.nsITextToSubURI);
addresses = textToSubURI.unEscapeURIForUI(characterSet, addresses);
}
catch(ex) {
// Do nothing.
}
var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
getService(Ci.nsIClipboardHelper);
clipboard.copyString(addresses);
},
// Open Metadata window for node
showMetadata: function () {
window.openDialog("chrome://browser/content/metaData.xul",
"_blank",
"scrollbars,resizable,chrome,dialog=no",
this.target);
},
///////////////
// Utilities //
///////////////
// Show/hide one item (specified via name or the item element itself).
showItem: function(aItemOrId, aShow) {
var item = aItemOrId.constructor == String ?
document.getElementById(aItemOrId) : aItemOrId;
if (item)
item.hidden = !aShow;
},
// Set given attribute of specified context-menu item. If the
// value is null, then it removes the attribute (which works
// nicely for the disabled attribute).
setItemAttr: function(aID, aAttr, aVal ) {
var elem = document.getElementById(aID);
if (elem) {
if (aVal == null) {
// null indicates attr should be removed.
elem.removeAttribute(aAttr);
}
else {
// Set attr=val.
elem.setAttribute(aAttr, aVal);
}
}
},
// Set context menu attribute according to like attribute of another node
// (such as a broadcaster).
setItemAttrFromNode: function(aItem_id, aAttr, aOther_id) {
var elem = document.getElementById(aOther_id);
if (elem && elem.getAttribute(aAttr) == "true")
this.setItemAttr(aItem_id, aAttr, "true");
else
this.setItemAttr(aItem_id, aAttr, null);
},
// Temporary workaround for DOM api not yet implemented by XUL nodes.
cloneNode: function(aItem) {
// Create another element like the one we're cloning.
var node = document.createElement(aItem.tagName);
// Copy attributes from argument item to the new one.
var attrs = aItem.attributes;
for (var i = 0; i < attrs.length; i++) {
var attr = attrs.item(i);
node.setAttribute(attr.nodeName, attr.nodeValue);
}
// Voila!
return node;
},
// Generate fully qualified URL for clicked-on link.
getLinkURL: function() {
var href = this.link.href;
if (href)
return href;
href = this.link.getAttributeNS("http://www.w3.org/1999/xlink",
"href");
if (!href || !href.match(/\S/)) {
// Without this we try to save as the current doc,
// for example, HTML case also throws if empty
throw "Empty href";
}
return makeURLAbsolute(this.link.baseURI, href);
},
getLinkURI: function() {
try {
return makeURI(this.linkURL);
}
catch (ex) {
// e.g. empty URL string
}
return null;
},
getLinkProtocol: function() {
if (this.linkURI)
return this.linkURI.scheme; // can be |undefined|
return null;
},
// Get text of link.
linkText: function() {
var text = gatherTextUnder(this.link);
if (!text || !text.match(/\S/)) {
text = this.link.getAttribute("title");
if (!text || !text.match(/\S/)) {
text = this.link.getAttribute("alt");
if (!text || !text.match(/\S/))
text = this.linkURL;
}
}
return text;
},
// Get selected text. Only display the first 15 chars.
isTextSelection: function() {
// Get 16 characters, so that we can trim the selection if it's greater
// than 15 chars
var selectedText = getBrowserSelection(16);
if (!selectedText)
return false;
if (selectedText.length > 15)
selectedText = selectedText.substr(0,15) + this.ellipsis;
// Use the current engine if the search bar is visible, the default
// engine otherwise.
var engineName = "";
var ss = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
if (isElementVisible(BrowserSearch.searchBar))
engineName = ss.currentEngine.name;
else
engineName = ss.defaultEngine.name;
// format "Search <engine> for <selection>" string to show in menu
var menuLabel = gNavigatorBundle.getFormattedString("contextMenuSearchText",
[engineName,
selectedText]);
document.getElementById("context-searchselect").label = menuLabel;
document.getElementById("context-searchselect").accessKey =
gNavigatorBundle.getString("contextMenuSearchText.accesskey");
return true;
},
// Returns true if anything is selected.
isContentSelection: function() {
return !document.commandDispatcher.focusedWindow.getSelection().isCollapsed;
},
toString: function () {
return "contextMenu.target = " + this.target + "\n" +
"contextMenu.onImage = " + this.onImage + "\n" +
"contextMenu.onLink = " + this.onLink + "\n" +
"contextMenu.link = " + this.link + "\n" +
"contextMenu.inFrame = " + this.inFrame + "\n" +
"contextMenu.hasBGImage = " + this.hasBGImage + "\n";
},
// Returns true if aNode is a from control (except text boxes and images).
// This is used to disable the context menu for form controls.
isTargetAFormControl: function(aNode) {
if (aNode instanceof HTMLInputElement)
return (aNode.type != "text" && aNode.type != "password" &&
aNode.type != "image");
return (aNode instanceof HTMLButtonElement) ||
(aNode instanceof HTMLSelectElement) ||
(aNode instanceof HTMLOptionElement) ||
(aNode instanceof HTMLOptGroupElement);
},
isTargetATextBox: function(node) {
if (node instanceof HTMLInputElement)
return (node.type == "text" || node.type == "password")
return (node instanceof HTMLTextAreaElement);
},
isTargetAKeywordField: function(aNode) {
if (!(aNode instanceof HTMLInputElement))
return false;
var form = aNode.form;
if (!form || aNode.type == "password")
return false;
var method = form.method.toUpperCase();
// These are the following types of forms we can create keywords for:
//
// method encoding type can create keyword
// GET * YES
// * YES
// POST YES
// POST application/x-www-form-urlencoded YES
// POST text/plain NO (a little tricky to do)
// POST multipart/form-data NO
// POST everything else YES
return (method == "GET" || method == "") ||
(form.enctype != "text/plain") && (form.enctype != "multipart/form-data");
},
// Determines whether or not the separator with the specified ID should be
// shown or not by determining if there are any non-hidden items between it
// and the previous separator.
shouldShowSeparator: function (aSeparatorID) {
var separator = document.getElementById(aSeparatorID);
if (separator) {
var sibling = separator.previousSibling;
while (sibling && sibling.localName != "menuseparator") {
if (!sibling.hidden)
return true;
sibling = sibling.previousSibling;
}
}
return false;
},
addDictionaries: function() {
var uri = formatURL("browser.dictionaries.download.url", true);
var locale = "-";
try {
locale = gPrefService.getComplexValue("intl.accept_languages",
Ci.nsIPrefLocalizedString).data;
}
catch (e) { }
var version = "-";
try {
version = Cc["@mozilla.org/xre/app-info;1"].
getService(Ci.nsIXULAppInfo).version;
}
catch (e) { }
uri = uri.replace(/%LOCALE%/, escape(locale)).replace(/%VERSION%/, version);
var newWindowPref = gPrefService.getIntPref("browser.link.open_newwindow");
var where = newWindowPref == 3 ? "tab" : "window";
openUILinkIn(uri, where);
},
bookmarkThisPage: function CM_bookmarkThisPage() {
window.top.PlacesCommandHook.bookmarkPage(this.browser, PlacesUtils.bookmarksMenuFolderId, true);
},
bookmarkLink: function CM_bookmarkLink() {
window.top.PlacesCommandHook.bookmarkLink(PlacesUtils.bookmarksMenuFolderId, this.linkURL,
this.linkText());
},
addBookmarkForFrame: function CM_addBookmarkForFrame() {
var doc = this.target.ownerDocument;
var uri = doc.documentURIObject;
var itemId = PlacesUtils.getMostRecentBookmarkForURI(uri);
if (itemId == -1) {
var title = doc.title;
var description = PlacesUIUtils.getDescriptionFromDocument(doc);
var descAnno = { name: DESCRIPTION_ANNO, value: description };
var txn = PlacesUIUtils.ptm.createItem(uri,
PlacesUtils.bookmarksMenuFolderId,
-1, title, null, [descAnno]);
PlacesUIUtils.ptm.doTransaction(txn);
itemId = PlacesUtils.getMostRecentBookmarkForURI(uri);
StarUI.beginBatch();
}
window.top.StarUI.showEditBookmarkPopup(itemId, this.browser, "overlap");
},
savePageAs: function CM_savePageAs() {
saveDocument(this.browser.contentDocument);
},
sendPage: function CM_sendPage() {
MailIntegration.sendLinkForWindow(this.browser.contentWindow);
},
printFrame: function CM_printFrame() {
PrintUtils.print(this.target.ownerDocument.defaultView);
},
switchPageDirection: function CM_switchPageDirection() {
SwitchDocumentDirection(this.browser.contentWindow);
},
mediaCommand : function CM_mediaCommand(command) {
var media = this.target;
switch (command) {
case "play":
media.play();
break;
case "pause":
media.pause();
break;
case "mute":
media.muted = true;
break;
case "unmute":
media.muted = false;
break;
case "hidecontrols":
media.removeAttribute("controls");
break;
case "showcontrols":
media.setAttribute("controls", "true");
break;
}
},
copyMediaLocation : function () {
var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
getService(Ci.nsIClipboardHelper);
clipboard.copyString(this.mediaURL);
},
get imageURL() {
if (this.onImage)
return this.mediaURL;
return "";
}
};
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