pjs/browser/base/content/viewsource.js

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JavaScript

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 Netscape are
* Copyright (C) Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Doron Rosenberg (doronr@naboonline.com)
* Neil Rashbrook (neil@parkwaycc.co.uk)
*/
const pageLoaderIface = Components.interfaces.nsIWebPageDescriptor;
var gBrowser = null;
var appCore = null;
var gPrefs = null;
try {
var prefService = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefService);
gPrefs = prefService.getBranch(null);
} catch (ex) {
}
function onLoadViewSource()
{
viewSource(window.arguments[0]);
window._content.focus();
}
function getBrowser()
{
if (!gBrowser)
gBrowser = document.getElementById("content");
return gBrowser;
}
function viewSource(url)
{
if (!url)
return false; // throw Components.results.NS_ERROR_FAILURE;
try {
appCore = Components.classes["@mozilla.org/appshell/component/browser/instance;1"]
.createInstance(Components.interfaces.nsIBrowserInstance);
// Initialize browser instance..
appCore.setWebShellWindow(window);
} catch(ex) {
// Give up.
window.close();
return false;
}
var loadFromURL = true;
//
// Parse the 'arguments' supplied with the dialog.
// arg[0] - URL string.
// arg[1] - Charset value in the form 'charset=xxx'.
// arg[2] - Page descriptor used to load content from the cache.
//
if ("arguments" in window) {
var arg;
//
// Set the charset of the viewsource window...
//
if (window.arguments.length >= 2) {
arg = window.arguments[1];
try {
if (typeof(arg) == "string" && arg.indexOf('charset=') != -1) {
var arrayArgComponents = arg.split('=');
if (arrayArgComponents) {
//we should "inherit" the charset menu setting in a new window
getMarkupDocumentViewer().defaultCharacterSet = arrayArgComponents[1];
}
}
} catch (ex) {
// Ignore the failure and keep processing arguments...
}
}
//
// Use the page descriptor to load the content from the cache (if
// available).
//
if (window.arguments.length >= 3) {
arg = window.arguments[2];
try {
if (typeof(arg) == "object" && arg != null) {
var PageLoader = getBrowser().webNavigation.QueryInterface(pageLoaderIface);
//
// Load the page using the page descriptor rather than the URL.
// This allows the content to be fetched from the cache (if
// possible) rather than the network...
//
PageLoader.LoadPage(arg, pageLoaderIface.DISPLAY_AS_SOURCE);
// The content was successfully loaded from the page cookie.
loadFromURL = false;
}
} catch(ex) {
// Ignore the failure. The content will be loaded via the URL
// that was supplied in arg[0].
}
}
}
if (loadFromURL) {
//
// Currently, an exception is thrown if the URL load fails...
//
var loadFlags = Components.interfaces.nsIWebNavigation.LOAD_FLAGS_NONE;
var viewSrcUrl = "view-source:" + url;
getBrowser().webNavigation.loadURI(viewSrcUrl, loadFlags, null, null, null);
}
//check the view_source.wrap_long_lines pref and set the menuitem's checked attribute accordingly
if (gPrefs) {
try {
var wraplonglinesPrefValue = gPrefs.getBoolPref("view_source.wrap_long_lines");
if (wraplonglinesPrefValue)
document.getElementById('menu_wrapLongLines').setAttribute("checked", "true");
} catch (ex) {
}
try {
document.getElementById("cmd_highlightSyntax").setAttribute("checked", gPrefs.getBoolPref("view_source.syntax_highlight"));
} catch (ex) {
}
} else {
document.getElementById("cmd_highlightSyntax").setAttribute("hidden", "true");
}
window._content.focus();
return true;
}
function ViewSourceClose()
{
window.close();
}
// Strips the |view-source:| for editPage()
function ViewSourceEditPage()
{
var url = window._content.location.href;
url = url.substring(12,url.length);
editPage(url,window, false);
}
// Strips the |view-source:| for saveURL()
function ViewSourceSavePage()
{
var url = window._content.document.location.href;
url = url.substring(12,url.length);
saveURL(url, null, "SaveLinkTitle");
}
//function to toggle long-line wrapping and set the view_source.wrap_long_lines
//pref to persist the last state
function wrapLongLines()
{
//get the first pre tag which surrounds the entire viewsource content
var myWrap = window._content.document.getElementById('viewsource');
if (myWrap.className == '')
myWrap.className = 'wrap';
else myWrap.className = '';
//since multiple viewsource windows are possible, another window could have
//affected the pref, so instead of determining the new pref value via the current
//pref value, we use myWrap.className
if (gPrefs){
try {
if (myWrap.className == '') {
gPrefs.setBoolPref("view_source.wrap_long_lines", false);
}
else {
gPrefs.setBoolPref("view_source.wrap_long_lines", true);
}
} catch (ex) {
}
}
}
//function to toggle syntax highlighting and set the view_source.syntax_highlight
//pref to persist the last state
function highlightSyntax()
{
var highlightSyntaxCmd = document.getElementById("cmd_highlightSyntax");
var highlightSyntax = highlightSyntaxCmd.getAttribute("checked") != "true";
highlightSyntaxCmd.setAttribute("checked", highlightSyntax);
gPrefs.setBoolPref("view_source.syntax_highlight", highlightSyntax);
var PageLoader = getBrowser().webNavigation.QueryInterface(pageLoaderIface);
PageLoader.LoadPage(PageLoader.currentDescriptor, pageLoaderIface.DISPLAY_NORMAL);
}
function openAboutDialog()
{
window.openDialog("chrome://browser/content/aboutDialog.xul", "About", "modal,centerscreen,chrome,resizable=no");
}