pjs/suite/common/contentAreaClick.js

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JavaScript

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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):
* Alec Flett <alecf@netscape.com>
* Ben Goodger <ben@netscape.com>
* Mike Pinkerton <pinkerton@netscape.com>
* Blake Ross <blakeross@telocity.com>
*
* 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 ***** */
/*
* - [ Dependencies ] ---------------------------------------------------------
* utilityOverlay.js:
* - gatherTextUnder
* - startScrolling
*/
var pref = null;
pref = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch);
// Prefill a single text field
function prefillTextBox(target) {
// obtain values to be used for prefilling
var walletService = Components.classes["@mozilla.org/wallet/wallet-service;1"].getService(Components.interfaces.nsIWalletService);
var value = walletService.WALLET_PrefillOneElement(window.content, target);
if (value) {
// result is a linear sequence of values, each preceded by a separator character
// convert linear sequence of values into an array of values
var separator = value[0];
var valueList = value.substring(1, value.length).split(separator);
target.value = valueList[0];
/*
* Following code is a replacement for above line. In the case of multiple values, it
* presents the user with a dialog containing a list from which he can select the value
* he wants. However it is being commented out for now because of several problems, namely
*
* 1. There is no easy way to put localizable strings for the title and message of
* the dialog without introducing a .properties file which currently doesn't exist
* 2. Using blank title and messages as shown below have a problem because a zero-length
* title is being displayed as some garbage characters (which is why the code below
* has a title of " " instead of ""). This is a separate bug which will have to be
* investigated further.
* 3. The current wallet tables present alternate values for items such as shipping
* address -- namely billing address and home address. Up until now, these alternate
* values have never been a problem because the preferred value is always first and is
* all the user sees when doing a prefill. However now he will be presented with a
* list showing all these values and asking him to pick one, even though the wallet
* code was clearly able to determine that he meant shipping address and not billing
* address.
* 4. There is a relatively long delay before the dialog come up whereas values are
* filled in quickly when no dialog is involved.
*
* Once this feature is checked in, a separate bug will be opened asking that the above
* problems be examined and this dialog turned on
if (valueList.length == 1) {
// only one value, use it for prefilling
target.value = valueList[0];
} else {
// more than one value, have user select the one he wants
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService();
promptService = promptService.QueryInterface(Components.interfaces.nsIPromptService);
var position = {};
var title = " ";
var message = "";
var ok =
promptService.select
(window, title, message, valueList.length, valueList, position)
if (ok) {
target.value = valueList[position.value];
}
}
* End of commented out code
*/
}
}
function hrefAndLinkNodeForClickEvent(event)
{
var href = "";
var linkNode = null;
var isKeyCommand = (event.type == "command");
var target = isKeyCommand ? document.commandDispatcher.focusedElement : event.target;
if ( target instanceof HTMLAnchorElement ||
target instanceof HTMLAreaElement ||
target instanceof HTMLLinkElement ) {
if (target.hasAttribute("href"))
linkNode = target;
}
else if ( target instanceof HTMLInputElement
&& (event.target.type == "text") // text field
&& !isKeyCommand // not a key event
&& event.detail == 2 // double click
&& event.button == 0 // left mouse button
&& event.target.value.length == 0 // no text has been entered
&& "@mozilla.org/wallet/wallet-service;1" in Components.classes // wallet is available
) {
prefillTextBox(target); // prefill the empty text field if possible
}
else {
linkNode = event.originalTarget;
while (linkNode && !(linkNode instanceof HTMLAnchorElement))
linkNode = linkNode.parentNode;
// <a> cannot be nested. So if we find an anchor without an
// href, there is no useful <a> around the target
if (linkNode && !linkNode.hasAttribute("href"))
linkNode = null;
}
if (linkNode) {
href = linkNode.href;
} else {
// Try simple XLink
linkNode = target;
while (linkNode) {
if (linkNode.nodeType == Node.ELEMENT_NODE) {
href = linkNode.getAttributeNS("http://www.w3.org/1999/xlink", "href");
break;
}
linkNode = linkNode.parentNode;
}
if (href) {
href = makeURLAbsolute(linkNode.baseURI, href);
}
}
return href ? {href: href, linkNode: linkNode} : null;
}
// Called whenever the user clicks in the content area,
// except when left-clicking on links (special case)
// should always return true for click to go through
function contentAreaClick(event)
{
if (!event.isTrusted || event.getPreventDefault()) {
return true;
}
var isKeyCommand = (event.type == "command");
var ceParams = hrefAndLinkNodeForClickEvent(event);
if (ceParams) {
var href = ceParams.href;
if (isKeyCommand) {
openNewTabWith(href, event.target.ownerDocument, event.shiftKey);
event.stopPropagation();
}
else {
handleLinkClick(event, href, ceParams.linkNode);
// if in mailnews block the link left click if we determine
// that this URL is phishy (i.e. a potential email scam)
if ("gMessengerBundle" in this && !event.button)
return !isPhishingURL(ceParams.linkNode, false, href);
}
return true;
}
if (pref && !isKeyCommand && event.button == 1 &&
pref.getBoolPref("middlemouse.contentLoadURL")) {
if (middleMousePaste(event)) {
event.stopPropagation();
}
}
return true;
}
function contentAreaMouseDown(event)
{
if (event.button == 1 && (event.target != event.currentTarget)
&& !hrefAndLinkNodeForClickEvent(event)
&& !isAutoscrollBlocker(event.originalTarget)) {
startScrolling(event);
return false;
}
return true;
}
function isAutoscrollBlocker(node)
{
if (!pref)
return false;
if (pref.getBoolPref("middlemouse.contentLoadURL"))
return true;
if (!pref.getBoolPref("middlemouse.paste"))
return false;
if (node.ownerDocument.designMode == "on")
return true;
while (node) {
if (node instanceof HTMLTextAreaElement ||
(node instanceof HTMLInputElement &&
(node.type == "text" || node.type == "password")))
return true;
node = node.parentNode;
}
return false;
}
function openNewTabOrWindow(event, href, doc)
{
// should we open it in a new tab?
if (pref && pref.getBoolPref("browser.tabs.opentabfor.middleclick")) {
openNewTabWith(href, doc, event.shiftKey);
event.stopPropagation();
return true;
}
// should we open it in a new window?
if (pref && pref.getBoolPref("middlemouse.openNewWindow")) {
openNewWindowWith(href, doc);
event.stopPropagation();
return true;
}
// let someone else deal with it
return false;
}
function handleLinkClick(event, href, linkNode)
{
// Checking to make sure we are allowed to open this URL
// (call to urlSecurityCheck) is now done within openNew... functions
switch (event.button) {
case 0: // if left button clicked
if (event.metaKey || event.ctrlKey) { // and meta or ctrl are down
if (openNewTabOrWindow(event, href, linkNode.ownerDocument))
return true;
}
var saveModifier = true;
if (pref) {
try {
saveModifier = pref.getBoolPref("ui.key.saveLink.shift");
}
catch(ex) {
}
}
saveModifier = saveModifier ? event.shiftKey : event.altKey;
if (saveModifier) { // if saveModifier is down
saveURL(href, gatherTextUnder(linkNode), "SaveLinkTitle",
false, getReferrer(linkNode.ownerDocument));
return true;
}
if (event.altKey) // if alt is down
return true; // do nothing
return false;
case 1: // if middle button clicked
if (openNewTabOrWindow(event, href, linkNode.ownerDocument))
return true;
break;
}
return false;
}
function middleMousePaste( event )
{
var url = readFromClipboard();
if (!url)
return false;
addToUrlbarHistory(url);
url = getShortcutOrURI(url);
// On ctrl-middleclick, open in new window or tab. Do not send referrer.
if (event.ctrlKey) {
// fix up our pasted URI in case it is malformed.
const nsIURIFixup = Components.interfaces.nsIURIFixup;
if (!gURIFixup)
gURIFixup = Components.classes["@mozilla.org/docshell/urifixup;1"]
.getService(nsIURIFixup);
url = gURIFixup.createFixupURI(url, nsIURIFixup.FIXUP_FLAGS_MAKE_ALTERNATE_URI).spec;
return openNewTabOrWindow(event, url, null);
}
// If ctrl wasn't down, then just load the url in the targeted win/tab.
var browser = getBrowser();
var tab = event.originalTarget;
if (tab.localName == "tab" &&
tab.parentNode == browser.mTabContainer) {
tab.linkedBrowser.userTypedValue = url;
if (tab == browser.mCurrentTab && url != "about:blank") {
gURLBar.value = url;
}
tab.linkedBrowser.loadURI(url);
if (event.shiftKey != (pref && pref.getBoolPref("browser.tabs.loadInBackground")))
browser.selectedTab = tab;
}
else if (event.target == browser) {
tab = browser.addTab(url);
if (event.shiftKey != (pref && pref.getBoolPref("browser.tabs.loadInBackground")))
browser.selectedTab = tab;
}
else {
if (url != "about:blank") {
gURLBar.value = url;
}
loadURI(url);
}
event.stopPropagation();
return true;
}
function addToUrlbarHistory(aUrlToAdd)
{
// Remove leading and trailing spaces first
aUrlToAdd = aUrlToAdd.replace(/^\s+/, '').replace(/\s+$/, '');
if (!aUrlToAdd)
return;
if (aUrlToAdd.search(/[\x00-\x1F]/) != -1) // don't store bad URLs
return;
if (!gRDF)
gRDF = Components.classes["@mozilla.org/rdf/rdf-service;1"]
.getService(Components.interfaces.nsIRDFService);
if (!gGlobalHistory)
gGlobalHistory = Components.classes["@mozilla.org/browser/global-history;2"]
.getService(Components.interfaces.nsIBrowserHistory);
if (!gURIFixup)
gURIFixup = Components.classes["@mozilla.org/docshell/urifixup;1"]
.getService(Components.interfaces.nsIURIFixup);
if (!gLocalStore)
gLocalStore = gRDF.GetDataSource("rdf:local-store");
if (!gRDFC)
gRDFC = Components.classes["@mozilla.org/rdf/container-utils;1"]
.getService(Components.interfaces.nsIRDFContainerUtils);
var entries = gRDFC.MakeSeq(gLocalStore, gRDF.GetResource("nc:urlbar-history"));
if (!entries)
return;
var elements = entries.GetElements();
if (!elements)
return;
var index = 0;
var urlToCompare = aUrlToAdd.toUpperCase();
while(elements.hasMoreElements()) {
var entry = elements.getNext();
if (!entry) continue;
index ++;
try {
entry = entry.QueryInterface(Components.interfaces.nsIRDFLiteral);
} catch(ex) {
// XXXbar not an nsIRDFLiteral for some reason. see 90337.
continue;
}
if (urlToCompare == entry.Value.toUpperCase()) {
// URL already present in the database
// Remove it from its current position.
// It is inserted to the top after the while loop.
entries.RemoveElementAt(index, true);
break;
}
} // while
// Otherwise, we've got a new URL in town. Add it!
try {
var url = getShortcutOrURI(aUrlToAdd);
var fixedUpURI = gURIFixup.createFixupURI(url, 0);
if (!fixedUpURI.schemeIs("data"))
gGlobalHistory.markPageAsTyped(fixedUpURI);
}
catch(ex) {
}
// Put the value as it was typed by the user in to RDF
// Insert it to the beginning of the list.
var entryToAdd = gRDF.GetLiteral(aUrlToAdd);
entries.InsertElementAt(entryToAdd, 1, true);
// Remove any expired history items so that we don't let
// this grow without bound.
for (index = entries.GetCount(); index > MAX_URLBAR_HISTORY_ITEMS; --index) {
entries.RemoveElementAt(index, true);
} // for
}
function makeURLAbsolute(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;
}