pjs/xpfe/communicator/resources/content/nsContextMenu.js

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JavaScript

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 Communicator client code, released
* March 31, 1998.
*
* 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):
* William A. ("PowerGUI") Law <law@netscape.com>
* Blake Ross <blakeross@telocity.com>
* Gervase Markham <gerv@gerv.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/*------------------------------ nsContextMenu ---------------------------------
| This JavaScript "class" is used to implement the browser's content-area |
| context menu. |
| |
| For usage, see references to this class in navigator.xul. |
| |
| Currently, this code is relatively useless for any other purpose. In the |
| longer term, this code will be restructured to make it more reusable. |
------------------------------------------------------------------------------*/
function nsContextMenu( xulMenu ) {
this.target = null;
this.menu = null;
this.popupURL = null;
this.onTextInput = false;
this.onImage = false;
this.onLoadedImage = false;
this.onLink = false;
this.onMailtoLink = false;
this.onSaveableLink = false;
this.onMetaDataItem = false;
this.onMathML = false;
this.link = false;
this.inFrame = false;
this.hasBGImage = false;
this.isTextSelected = false;
this.inDirList = false;
this.shouldDisplay = true;
this.autoDownload = false;
// Initialize new menu.
this.initMenu( xulMenu );
}
// Prototype for nsContextMenu "class."
nsContextMenu.prototype = {
// onDestroy is a no-op at this point.
onDestroy : function () {
},
// Initialize context menu.
initMenu : function ( popup ) {
// Save menu.
this.menu = popup;
const xulNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
if ( document.popupNode.namespaceURI == xulNS ) {
this.shouldDisplay = false;
return;
}
// Get contextual info.
this.setTarget( document.popupNode );
this.isTextSelected = this.isTextSelection();
this.initPopupURL();
// Initialize (disable/remove) menu items.
this.initItems();
},
initItems : function () {
this.initOpenItems();
this.initNavigationItems();
this.initViewItems();
this.initMiscItems();
this.initSaveItems();
this.initClipboardItems();
this.initMetadataItems();
},
initOpenItems : function () {
var showOpen = this.onSaveableLink || ( this.inDirList && this.onLink );
this.showItem( "context-openlink", showOpen );
this.showItem( "context-openlinkintab", showOpen );
this.showItem( "context-sep-open", showOpen );
},
initNavigationItems : function () {
// Back determined by canGoBack broadcaster.
this.setItemAttrFromNode( "context-back", "disabled", "canGoBack" );
// Forward determined by canGoForward broadcaster.
this.setItemAttrFromNode( "context-forward", "disabled", "canGoForward" );
var showNav = !( this.isTextSelected || this.onLink || this.onImage || this.onTextInput );
this.showItem( "context-back", showNav );
this.showItem( "context-forward", showNav );
this.showItem( "context-reload", showNav );
this.showItem( "context-stop", showNav );
this.showItem( "context-sep-stop", showNav );
// XXX: Stop is determined in navigator.js; the canStop broadcaster is broken
//this.setItemAttrFromNode( "context-stop", "disabled", "canStop" );
},
initSaveItems : function () {
var showSave = !( this.inDirList || this.isTextSelected || this.onTextInput || this.onStandaloneImage ||
( this.onLink && this.onImage ) );
if (showSave)
goSetMenuValue( "context-savepage", this.autoDownload ? "valueSave" : "valueSaveAs" );
this.showItem( "context-savepage", showSave );
// Save link depends on whether we're in a link.
if (this.onSaveableLink)
goSetMenuValue( "context-savelink", this.autoDownload ? "valueSave" : "valueSaveAs" );
this.showItem( "context-savelink", this.onSaveableLink );
// Save/Send image depends on whether there is one.
showSave = this.onLoadedImage || this.onStandaloneImage;
if (showSave)
goSetMenuValue( "context-saveimage", this.autoDownload ? "valueSave" : "valueSaveAs" );
this.showItem( "context-saveimage", showSave );
this.showItem( "context-sendimage", showSave );
},
initViewItems : function () {
// View source is always OK, unless in directory listing.
this.showItem( "context-viewpartialsource-selection", this.isTextSelected && !this.onTextInput );
this.showItem( "context-viewpartialsource-mathml", this.onMathML && !this.isTextSelected );
var showView = !( this.inDirList || this.onImage || this.isTextSelected || this.onLink || this.onTextInput );
this.showItem( "context-viewsource", showView );
this.showItem( "context-viewinfo", showView );
this.showItem( "context-sep-properties", !( this.inDirList || this.isTextSelected || this.onTextInput ) );
// Set As Wallpaper depends on whether an image was clicked on, and only works on Windows.
var isWin = navigator.appVersion.indexOf("Windows") != -1;
this.showItem( "context-setWallpaper", isWin && (this.onLoadedImage || this.onStandaloneImage));
this.showItem( "context-sep-image", this.onLoadedImage || this.onStandaloneImage);
if( isWin && this.onLoadedImage )
// Disable the Set As Wallpaper menu item if we're still trying to load the image
this.setItemAttr( "context-setWallpaper", "disabled", (("complete" in this.target) && !this.target.complete) ? "true" : null );
this.showItem( "context-fitimage", this.onStandaloneImage && content.document.imageResizingEnabled );
if ( this.onStandaloneImage && content.document.imageResizingEnabled ) {
this.setItemAttr( "context-fitimage", "disabled", content.document.imageIsOverflowing ? null : "true");
this.setItemAttr( "context-fitimage", "checked", content.document.imageIsResized ? "true" : null);
}
// View Image depends on whether an image was clicked on.
this.showItem( "context-viewimage", this.onImage && !this.onStandaloneImage);
// View background image depends on whether there is one.
this.showItem( "context-viewbgimage", showView && !this.onStandaloneImage);
this.showItem( "context-sep-viewbgimage", showView && !this.onStandaloneImage);
this.setItemAttr( "context-viewbgimage", "disabled", this.hasBGImage ? null : "true");
},
initMiscItems : function () {
// Use "Bookmark This Link" if on a link.
this.showItem( "context-bookmarkpage", !( this.isTextSelected || this.onTextInput || this.onStandaloneImage ) );
this.showItem( "context-bookmarklink", this.onLink && !this.onMailtoLink );
this.showItem( "context-searchselect", this.isTextSelected && !this.onTextInput );
this.showItem( "frame", this.inFrame );
this.showItem( "frame-sep", this.inFrame );
if (this.inFrame)
goSetMenuValue( "saveframeas", this.autoDownload ? "valueSave" : "valueSaveAs" );
var blocking = true;
if (this.popupURL)
try {
const PM = Components.classes["@mozilla.org/PopupWindowManager;1"]
.getService(Components.interfaces.nsIPopupWindowManager);
blocking = PM.testPermission(this.popupURL) ==
Components.interfaces.nsIPopupWindowManager.DENY_POPUP;
} catch (e) {
}
this.showItem( "popupwindow-reject", this.popupURL && !blocking);
this.showItem( "popupwindow-allow", this.popupURL && blocking);
this.showItem( "context-sep-popup", this.popupURL);
// BiDi UI
this.showItem( "context-sep-bidi", gShowBiDi);
this.showItem( "context-bidi-text-direction-toggle", this.onTextInput && gShowBiDi);
this.showItem( "context-bidi-page-direction-toggle", !this.onTextInput && gShowBiDi);
},
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-redo", this.onTextInput );
this.showItem( "context-sep-undo", this.onTextInput );
this.showItem( "context-cut", this.onTextInput );
this.showItem( "context-copy", this.isTextSelected || 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", true );
this.showItem( "context-sep-selectall", this.isTextSelected && !this.onTextInput );
// In a text area there will be nothing after select all, so we don't want a sep
// Otherwise, if there's text selected then there are extra menu items
// (search for selection and view selection source), so we do want a sep
// 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 link.
this.showItem( "context-copylink", this.onLink );
this.showItem( "context-sep-copylink", this.onLink );
// Copy image location depends on whether we're on an image.
this.showItem( "context-copyimage", this.onImage );
this.showItem( "context-sep-copyimage", this.onImage );
},
initMetadataItems : function () {
// Show if user clicked on something which has metadata.
this.showItem( "context-metadata", this.onMetaDataItem );
},
// Set various context menu attributes based on the state of the world.
setTarget : function ( node ) {
// Initialize contextual info.
this.onImage = false;
this.onLoadedImage = false;
this.onStandaloneImage = false;
this.onMetaDataItem = false;
this.onTextInput = false;
this.imageURL = "";
this.onLink = false;
this.onMathML = false;
this.inFrame = false;
this.hasBGImage = false;
this.bgImageURL = "";
// Remember the node that was clicked.
this.target = node;
this.autoDownload = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch)
.getBoolPref("browser.download.autoDownload");
// See if the user clicked on an image.
if ( this.target.nodeType == Node.ELEMENT_NODE ) {
if ( this.target instanceof Components.interfaces.nsIImageLoadingContent && this.target.currentURI ) {
this.onImage = true;
var request = this.target.getRequest( Components.interfaces.nsIImageLoadingContent.CURRENT_REQUEST );
if (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE))
this.onLoadedImage = true;
this.imageURL = this.target.currentURI.spec;
if ( this.target.ownerDocument instanceof ImageDocument )
this.onStandaloneImage = true;
} else if ( this.target instanceof HTMLInputElement ) {
type = this.target.getAttribute("type");
this.onTextInput = this.isTargetATextBox(this.target);
} else if ( this.target instanceof HTMLTextAreaElement ) {
this.onTextInput = true;
} else if ( this.target instanceof HTMLHtmlElement ) {
// pages with multiple <body>s are lame. we'll teach them a lesson.
var bodyElt = this.target.ownerDocument.getElementsByTagName("body")[0];
if ( bodyElt ) {
var computedURL = this.getComputedURL( bodyElt, "background-image" );
if ( computedURL ) {
this.hasBGImage = true;
this.bgImageURL = this.makeURLAbsolute( bodyElt.baseURI,
computedURL );
}
}
} else if ( "HTTPIndex" in content &&
content.HTTPIndex instanceof Components.interfaces.nsIHTTPIndex ) {
this.inDirList = true;
// Bubble outward till we get to an element with URL attribute
// (which should be the href).
var root = this.target;
while ( root && !this.link ) {
if ( root.tagName == "tree" ) {
// Hit root of tree; must have clicked in empty space;
// thus, no link.
break;
}
if ( root.getAttribute( "URL" ) ) {
// Build pseudo link object so link-related functions work.
this.onLink = true;
this.link = { href : root.getAttribute("URL"),
getAttribute: function (attr) {
if (attr == "title") {
return root.firstChild.firstChild.getAttribute("label");
} else {
return "";
}
}
};
// If element is a directory, then you can't save it.
if ( root.getAttribute( "container" ) == "true" ) {
this.onSaveableLink = false;
} else {
this.onSaveableLink = true;
}
} else {
root = root.parentNode;
}
}
}
}
// We have meta data on images.
this.onMetaDataItem = this.onImage;
// 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.
if ( this.target.ownerDocument != window.content.document ) {
this.inFrame = true;
}
// Bubble out, looking for items of interest
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 instanceof HTMLLinkElement ||
elem.getAttributeNS( "http://www.w3.org/1999/xlink", "type") == "simple" ) ) {
// Clicked on a link.
this.onLink = true;
this.onMetaDataItem = true;
// Remember corresponding element.
this.link = elem;
this.onMailtoLink = this.isLinkType( "mailto:", this.link );
// Remember if it is saveable.
this.onSaveableLink = this.isLinkSaveable( this.link );
}
// Text input?
if ( !this.onTextInput ) {
// Clicked on a link.
this.onTextInput = this.isTargetATextBox(elem);
}
// Metadata item?
if ( !this.onMetaDataItem ) {
// We currently display metadata on anything which fits
// the below test.
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") ) {
dump("On metadata item.\n");
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 = this.makeURLAbsolute( elem.baseURI,
bgImgUrl );
}
}
}
elem = elem.parentNode;
}
},
initPopupURL: function() {
// quick check: if no opener, it can't be a popup
if (!window.content.opener)
return;
try {
var show = false;
// is it a popup window?
const CI = Components.interfaces;
var xulwin = window
.QueryInterface(CI.nsIInterfaceRequestor)
.getInterface(CI.nsIWebNavigation)
.QueryInterface(CI.nsIDocShellTreeItem)
.treeOwner
.QueryInterface(CI.nsIInterfaceRequestor)
.getInterface(CI.nsIXULWindow);
if (xulwin.contextFlags &
CI.nsIWindowCreator2.PARENT_IS_LOADING_OR_RUNNING_TIMEOUT) {
// do the pref settings allow site-by-site popup management?
const PB = Components.classes["@mozilla.org/preferences-service;1"]
.getService(CI.nsIPrefBranch);
show = !PB.getBoolPref("dom.disable_open_during_load");
}
if (show) {
// initialize popupURL
const IOS = Components.classes["@mozilla.org/network/io-service;1"]
.getService(CI.nsIIOService);
this.popupURL = IOS.newURI(window.content.opener.location.href, null, null);
// but cancel if it's an unsuitable URL
const PM = Components.classes["@mozilla.org/PopupWindowManager;1"]
.getService(CI.nsIPopupWindowManager);
}
} catch(e) {
}
},
// Returns the computed style attribute for the given element.
getComputedStyle: function( elem, prop ) {
return elem.ownerDocument.defaultView.getComputedStyle( elem, '' ).getPropertyValue( prop );
},
// Returns a "url"-type computed style attribute value, with the url() stripped.
getComputedURL: function( elem, prop ) {
var url = elem.ownerDocument.defaultView.getComputedStyle( elem, '' ).getPropertyCSSValue( prop );
return ( url.primitiveType == CSSPrimitiveValue.CSS_URI ) ? url.getStringValue() : null;
},
// Returns true iff clicked on link is saveable.
isLinkSaveable : function ( link ) {
// We don't do the Right Thing for news/snews yet, so turn them off
// until we do.
return !(this.isLinkType( "mailto:" , link ) ||
this.isLinkType( "javascript:" , link ) ||
this.isLinkType( "news:", link ) ||
this.isLinkType( "snews:", link ) );
},
// Returns true iff clicked on link is of type given.
isLinkType : function ( linktype, link ) {
try {
// Test for missing protocol property.
if ( !link.protocol ) {
// We must resort to testing the URL string :-(.
var protocol;
if ( link.href ) {
protocol = link.href.substr( 0, linktype.length );
} else {
protocol = link.getAttributeNS("http://www.w3.org/1999/xlink","href");
if ( protocol ) {
protocol = protocol.substr( 0, linktype.length );
}
}
return protocol.toLowerCase() === linktype;
} else {
// Presume all but javascript: urls are saveable.
return link.protocol.toLowerCase() === linktype;
}
} catch (e) {
// something was wrong with the link,
// so we won't be able to save it anyway
return false;
}
},
// Block popup windows
rejectPopupWindows: function(andClose) {
const PM = Components.classes["@mozilla.org/PopupWindowManager;1"]
.getService(Components.interfaces.nsIPopupWindowManager);
PM.add(this.popupURL, false);
if (andClose) {
const OS = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
OS.notifyObservers(window, "popup-perm-close", this.popupURL.spec);
}
},
// Unblock popup windows
allowPopupWindows: function() {
const PM = Components.classes["@mozilla.org/PopupWindowManager;1"]
.getService(Components.interfaces.nsIPopupWindowManager);
PM.add(this.popupURL, true);
},
// Open linked-to URL in a new window.
openLink : function () {
// Determine linked-to URL.
openNewWindowWith( this.linkURL(), true );
},
// Open linked-to URL in a new tab.
openLinkInTab : function ( reverseBackgroundPref ) {
// Determine linked-to URL.
openNewTabWith( this.linkURL(), true, reverseBackgroundPref );
},
// Open frame in a new tab.
openFrameInTab : function ( reverseBackgroundPref ) {
// Determine linked-to URL.
openNewTabWith( this.target.ownerDocument.location.href, true, reverseBackgroundPref );
},
// Reload clicked-in frame.
reloadFrame : function () {
this.target.ownerDocument.location.reload();
},
// Open clicked-in frame in its own window.
openFrame : function () {
openNewWindowWith( this.target.ownerDocument.location.href );
},
// Open clicked-in frame in the same window
showOnlyThisFrame : function () {
window.loadURI(this.target.ownerDocument.location.href);
},
// View Partial Source
viewPartialSource : function ( context ) {
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 (context == "selection")
reference = focusedWindow.getSelection();
else if (context == "mathml")
reference = this.target;
else
throw "not reached";
var docUrl = null; // unused (and play nice for fragments generated via XSLT too)
window.openDialog("chrome://navigator/content/viewPartialSource.xul",
"_blank", "scrollbars,resizable,chrome,dialog=no",
docUrl, docCharset, reference, context);
},
// Open new "view source" window with the frame's URL.
viewFrameSource : function () {
BrowserViewSourceOfDocument(this.target.ownerDocument);
},
viewInfo : function () {
BrowserPageInfo();
},
viewFrameInfo : function () {
BrowserPageInfo(this.target.ownerDocument);
},
toggleImageSize : function () {
content.document.toggleImageSize();
},
// Change current window to the URL of the image.
viewImage : function () {
urlSecurityCheck( this.imageURL, document );
openTopWin( this.imageURL );
},
// Change current window to the URL of the background image.
viewBGImage : function () {
urlSecurityCheck( this.bgImageURL, document );
openTopWin( this.bgImageURL );
},
setWallpaper: function() {
// Confirm since it's annoying if you hit this accidentally.
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
var gNavigatorBundle = document.getElementById("bundle_navigator");
var promptTitle = gNavigatorBundle.getString("wallpaperConfirmTitle");
var promptMsg = gNavigatorBundle.getString("wallpaperConfirmMsg");
var promptConfirmButton = gNavigatorBundle.getString("wallpaperConfirmButton");
var buttonPressed = promptService.confirmEx(window, promptTitle, promptMsg,
(promptService.BUTTON_TITLE_IS_STRING * promptService.BUTTON_POS_0) +
(promptService.BUTTON_TITLE_CANCEL * promptService.BUTTON_POS_1),
promptConfirmButton, null, null, null, {value:0});
if (buttonPressed != 0)
return;
var winhooks = Components.classes[ "@mozilla.org/winhooks;1" ].
getService(Components.interfaces.nsIWindowsHooks);
winhooks.setImageAsWallpaper(this.target, false);
},
// Save URL of clicked-on frame.
saveFrame : function () {
saveDocument( this.target.ownerDocument );
},
// Save URL of clicked-on link.
saveLink : function () {
saveURL( this.linkURL(), this.linkText(), null, true,
getReferrer(document) );
},
// Save URL of clicked-on image.
saveImage : function () {
// Note: getReferrer wants our chrome document, not the actual
// target document; it handles getting that itself.
saveImageURL( this.imageURL, null, "SaveImageTitle", false,
getReferrer(document) );
},
// Generate email address.
getEmail : function () {
// Get 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 addresses;
try {
// Let's try to unescape it using a character set
var characterSet = this.target.ownerDocument.characterSet;
const textToSubURI = Components.classes["@mozilla.org/intl/texttosuburi;1"]
.getService(Components.interfaces.nsITextToSubURI);
addresses = this.linkURL().match(/^mailto:([^?]+)/)[1];
addresses = textToSubURI.unEscapeURIForUI(characterSet, addresses);
}
catch(ex) {
// Do nothing.
}
return addresses;
},
// Copy email to clipboard
copyEmail : function () {
var clipboard = this.getService( "@mozilla.org/widget/clipboardhelper;1",
Components.interfaces.nsIClipboardHelper );
clipboard.copyString(this.getEmail());
},
addBookmark : function() {
var docshell = document.getElementById( "content" ).webNavigation;
BookmarksUtils.addBookmark( docshell.currentURI.spec,
docshell.document.title,
docshell.document.characterSet,
false );
},
addBookmarkForFrame : function() {
var doc = this.target.ownerDocument;
var uri = doc.location.href;
var title = doc.title;
if ( !title )
title = uri;
BookmarksUtils.addBookmark( uri,
title,
doc.characterSet,
false );
},
// Open Metadata window for node
showMetadata : function () {
window.openDialog( "chrome://navigator/content/metadata.xul",
"_blank",
"scrollbars,resizable,chrome,dialog=no",
this.target);
},
///////////////
// Utilities //
///////////////
// Create instance of component given contractId and iid (as string).
createInstance : function ( contractId, iidName ) {
var iid = Components.interfaces[ iidName ];
return Components.classes[ contractId ].createInstance( iid );
},
// Get service given contractId and iid (as string).
getService : function ( contractId, iidName ) {
var iid = Components.interfaces[ iidName ];
return Components.classes[ contractId ].getService( iid );
},
// Show/hide one item (specified via name or the item element itself).
showItem : function ( itemOrId, show ) {
var item = itemOrId.constructor == String ? document.getElementById(itemOrId) : itemOrId;
if (item)
item.hidden = !show;
},
// 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 ( id, attr, val ) {
var elem = document.getElementById( id );
if ( elem ) {
if ( val == null ) {
// null indicates attr should be removed.
elem.removeAttribute( attr );
} else {
// Set attr=val.
elem.setAttribute( attr, val );
}
}
},
// Set context menu attribute according to like attribute of another node
// (such as a broadcaster).
setItemAttrFromNode : function ( item_id, attr, other_id ) {
var elem = document.getElementById( other_id );
if ( elem && elem.getAttribute( attr ) == "true" ) {
this.setItemAttr( item_id, attr, "true" );
} else {
this.setItemAttr( item_id, attr, null );
}
},
// Temporary workaround for DOM api not yet implemented by XUL nodes.
cloneNode : function ( item ) {
// Create another element like the one we're cloning.
var node = document.createElement( item.tagName );
// Copy attributes from argument item to the new one.
var attrs = item.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.
linkURL : function () {
if (this.link.href) {
return this.link.href;
}
var href = this.link.getAttributeNS("http://www.w3.org/1999/xlink","href");
if (!href || !href.match(/\S/)) {
throw "Empty href"; // Without this we try to save as the current doc, for example, HTML case also throws if empty
}
href = this.makeURLAbsolute(this.link.baseURI,href);
return href;
},
// 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/)) {
if (this.link.href) {
text = this.link.href;
} else {
text = getAttributeNS("http://www.w3.org/1999/xlink", "href");
if (text && text.match(/\S/)) {
text = this.makeURLAbsolute(this.link.baseURI, text);
}
}
}
}
}
return text;
},
//Get selected object and convert it to a string to get
//selected text. Only use the first 15 chars.
isTextSelection : function() {
var result = false;
var selection = this.searchSelected(16);
var bundle = srGetStrBundle("chrome://communicator/locale/contentAreaCommands.properties");
var searchSelectText;
if (selection != "") {
searchSelectText = selection.toString();
if (searchSelectText.length > 15)
searchSelectText = searchSelectText.substr(0,15) + "...";
result = true;
// format "Search for <selection>" string to show in menu
searchSelectText = bundle.formatStringFromName("searchText",
[searchSelectText], 1);
this.setItemAttr("context-searchselect", "label", searchSelectText);
}
return result;
},
searchSelected : function( charlen ) {
var focusedWindow = document.commandDispatcher.focusedWindow;
var searchStr = focusedWindow.getSelection();
searchStr = searchStr.toString();
// searching for more than 150 chars makes no sense
if (!charlen)
charlen = 150;
if (charlen < searchStr.length) {
// only use the first charlen important chars. see bug 221361
var pattern = new RegExp("^(?:\\s*.){0," + charlen + "}");
pattern.test(searchStr);
searchStr = RegExp.lastMatch;
}
searchStr = searchStr.replace(/^\s+/, "");
searchStr = searchStr.replace(/\s+$/, "");
searchStr = searchStr.replace(/\s+/g, " ");
return searchStr;
},
// Convert relative URL to absolute, using document's <base>.
makeURLAbsolute : function ( base, url ) {
// Construct nsIURL.
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
var baseURI = ioService.newURI(base, null, null);
return ioService.newURI(baseURI.resolve(url), null, null).spec;
},
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";
},
isTargetATextBox : function ( node )
{
if (node instanceof HTMLInputElement)
return (node.type == "text" || node.type == "password")
return (node instanceof HTMLTextAreaElement);
},
// 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.getAttribute("hidden") != "true")
return true;
sibling = sibling.previousSibling;
}
}
return false;
}
};
/*************************************************************************
*
* nsDefaultEngine : nsIObserver
*
*************************************************************************/
function nsDefaultEngine()
{
try
{
var pb = Components.classes["@mozilla.org/preferences-service;1"].
getService(Components.interfaces.nsIPrefBranch);
var pbi = pb.QueryInterface(
Components.interfaces.nsIPrefBranch2);
pbi.addObserver(this.domain, this, false);
// reuse code by explicitly invoking initial |observe| call
// to initialize the |icon| and |name| member variables
this.observe(pb, "", this.domain);
}
catch (ex)
{
}
}
nsDefaultEngine.prototype =
{
name: "",
icon: "",
domain: "browser.search.defaultengine",
// nsIObserver implementation
observe: function(aPrefBranch, aTopic, aPrefName)
{
try
{
var rdf = Components.
classes["@mozilla.org/rdf/rdf-service;1"].
getService(Components.interfaces.nsIRDFService);
var ds = rdf.GetDataSource("rdf:internetsearch");
var defaultEngine = aPrefBranch.getCharPref(aPrefName);
var res = rdf.GetResource(defaultEngine);
// get engine ``pretty'' name
const kNC_Name = rdf.GetResource(
"http://home.netscape.com/NC-rdf#Name");
var engineName = ds.GetTarget(res, kNC_Name, true);
if (engineName)
{
this.name = engineName.QueryInterface(
Components.interfaces.nsIRDFLiteral).Value;
}
// get URL to engine vendor icon
const kNC_Icon = rdf.GetResource(
"http://home.netscape.com/NC-rdf#Icon");
var iconURL = ds.GetTarget(res, kNC_Icon, true);
if (iconURL)
{
this.icon = iconURL.QueryInterface(
Components.interfaces.nsIRDFLiteral).Value;
}
}
catch (ex)
{
}
}
}