mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-08-30 17:40:16 +02:00
586 lines
18 KiB
JavaScript
586 lines
18 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation. Portions created by Netscape are Copyright (C) Netscape Communications Corporation. All Rights Reserved.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Doron Rosenberg (doronr@naboonline.com)
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* Neil Rashbrook (neil@parkwaycc.co.uk)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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const pageLoaderIface = Components.interfaces.nsIWebPageDescriptor;
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const nsISelectionPrivate = Components.interfaces.nsISelectionPrivate;
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const nsISelectionController = Components.interfaces.nsISelectionController;
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var gBrowser = null;
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var gViewSourceBundle = null;
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var gPrefs = null;
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var gLastLineFound = '';
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var gGoToLine = 0;
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try {
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var prefService = Components.classes["@mozilla.org/preferences-service;1"]
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.getService(Components.interfaces.nsIPrefService);
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gPrefs = prefService.getBranch(null);
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} catch (ex) {
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}
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var gSelectionListener = {
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timeout: 0,
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notifySelectionChanged: function(doc, sel, reason)
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{
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// Coalesce notifications within 100ms intervals.
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if (!this.timeout)
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this.timeout = setTimeout(updateStatusBar, 100);
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}
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}
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function onLoadViewSource()
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{
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viewSource(window.arguments[0]);
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document.commandDispatcher.focusedWindow = content;
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}
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function getBrowser()
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{
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if (!gBrowser)
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gBrowser = document.getElementById("content");
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return gBrowser;
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}
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function getSelectionController()
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{
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return getBrowser().docShell
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.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
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.getInterface(Components.interfaces.nsISelectionDisplay)
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.QueryInterface(nsISelectionController);
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}
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function getViewSourceBundle()
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{
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if (!gViewSourceBundle)
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gViewSourceBundle = document.getElementById("viewSourceBundle");
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return gViewSourceBundle;
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}
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function viewSource(url)
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{
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if (!url)
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return false; // throw Components.results.NS_ERROR_FAILURE;
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getBrowser().addEventListener("unload", onUnloadContent, true);
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getBrowser().addEventListener("load", onLoadContent, true);
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var loadFromURL = true;
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//
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// Parse the 'arguments' supplied with the dialog.
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// arg[0] - URL string.
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// arg[1] - Charset value in the form 'charset=xxx'.
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// arg[2] - Page descriptor used to load content from the cache.
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// arg[3] - Line number to go to.
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//
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if ("arguments" in window) {
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var arg;
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//
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// Set the charset of the viewsource window...
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//
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if (window.arguments.length >= 2) {
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arg = window.arguments[1];
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try {
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if (typeof(arg) == "string" && arg.indexOf('charset=') != -1) {
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var arrayArgComponents = arg.split('=');
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if (arrayArgComponents) {
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//we should "inherit" the charset menu setting in a new window
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getMarkupDocumentViewer().defaultCharacterSet = arrayArgComponents[1];
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}
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}
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} catch (ex) {
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// Ignore the failure and keep processing arguments...
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}
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}
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//
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// Get any specified line to jump to.
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//
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if (window.arguments.length >= 4) {
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arg = window.arguments[3];
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gGoToLine = parseInt(arg);
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}
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//
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// Use the page descriptor to load the content from the cache (if
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// available).
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//
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if (window.arguments.length >= 3) {
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arg = window.arguments[2];
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try {
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if (typeof(arg) == "object" && arg != null) {
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var PageLoader = getBrowser().webNavigation.QueryInterface(pageLoaderIface);
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//
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// Load the page using the page descriptor rather than the URL.
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// This allows the content to be fetched from the cache (if
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// possible) rather than the network...
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//
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PageLoader.loadPage(arg, pageLoaderIface.DISPLAY_AS_SOURCE);
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// The content was successfully loaded from the page cookie.
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loadFromURL = false;
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}
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} catch(ex) {
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// Ignore the failure. The content will be loaded via the URL
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// that was supplied in arg[0].
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}
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}
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}
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if (loadFromURL) {
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//
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// We need to set up session history to give us a page descriptor.
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//
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var webNavigation = getBrowser().webNavigation;
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webNavigation.sessionHistory = Components.classes["@mozilla.org/browser/shistory;1"].createInstance();
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//
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// Currently, an exception is thrown if the URL load fails...
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//
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var loadFlags = Components.interfaces.nsIWebNavigation.LOAD_FLAGS_NONE;
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var viewSrcUrl = "view-source:" + url;
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webNavigation.loadURI(viewSrcUrl, loadFlags, null, null, null);
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}
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//check the view_source.wrap_long_lines pref and set the menuitem's checked attribute accordingly
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if (gPrefs) {
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try {
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var wraplonglinesPrefValue = gPrefs.getBoolPref("view_source.wrap_long_lines");
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if (wraplonglinesPrefValue)
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document.getElementById('menu_wrapLongLines').setAttribute("checked", "true");
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} catch (ex) {
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}
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try {
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document.getElementById("menu_highlightSyntax").setAttribute("checked", gPrefs.getBoolPref("view_source.syntax_highlight"));
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} catch (ex) {
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}
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} else {
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document.getElementById("menu_highlightSyntax").setAttribute("hidden", "true");
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}
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window.content.focus();
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return true;
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}
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function onLoadContent()
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{
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//
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// If the view source was opened with a "go to line" argument.
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//
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if (gGoToLine > 0) {
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goToLine(gGoToLine);
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gGoToLine = 0;
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}
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document.getElementById('cmd_goToLine').removeAttribute('disabled');
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// Register a listener so that we can show the caret position on the status bar.
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window.content.getSelection()
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.QueryInterface(nsISelectionPrivate)
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.addSelectionListener(gSelectionListener);
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}
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function onUnloadContent()
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{
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//
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// Disable "go to line" while reloading due to e.g. change of charset
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// or toggling of syntax highlighting.
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//
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document.getElementById('cmd_goToLine').setAttribute('disabled', 'true');
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}
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function ViewSourceClose()
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{
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window.close();
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}
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function BrowserReload()
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{
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// Reload will always reload from cache which is probably not what's wanted
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BrowserReloadSkipCache();
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}
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function BrowserReloadSkipCache()
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{
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const webNavigation = getBrowser().webNavigation;
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webNavigation.reload(webNavigation.LOAD_FLAGS_BYPASS_PROXY | webNavigation.LOAD_FLAGS_BYPASS_CACHE);
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}
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// Strips the |view-source:| for editPage()
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function ViewSourceEditPage()
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{
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editPage(window.content.location.href.substring(12));
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}
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// Strips the |view-source:| for saveURL()
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function ViewSourceSavePage()
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{
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saveURL(window.content.location.href.substring(12), null, "SaveLinkTitle");
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}
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function ViewSourceGoToLine()
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{
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var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
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.getService(Components.interfaces.nsIPromptService);
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var viewSourceBundle = getViewSourceBundle();
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var input = {value:gLastLineFound};
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for (;;) {
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var ok = promptService.prompt(
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window,
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viewSourceBundle.getString("goToLineTitle"),
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viewSourceBundle.getString("goToLineText"),
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input,
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null,
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{value:0});
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if (!ok) return;
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var line = parseInt(input.value);
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if (!(line > 0)) {
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promptService.alert(window,
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viewSourceBundle.getString("invalidInputTitle"),
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viewSourceBundle.getString("invalidInputText"));
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continue;
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}
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var found = goToLine(line);
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if (found) {
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break;
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}
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promptService.alert(window,
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viewSourceBundle.getString("outOfRangeTitle"),
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viewSourceBundle.getString("outOfRangeText"));
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}
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}
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function goToLine(line)
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{
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var viewsource = window.content.document.body;
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//
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// The source document is made up of a number of pre elements with
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// id attributes in the format <pre id="line123">, meaning that
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// the first line in the pre element is number 123.
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// Do binary search to find the pre element containing the line.
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//
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var pre;
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for (var lbound = 0, ubound = viewsource.childNodes.length; ; ) {
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var middle = (lbound + ubound) >> 1;
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pre = viewsource.childNodes[middle];
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var firstLine = parseInt(pre.id.substring(4));
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if (lbound == ubound - 1) {
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break;
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}
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if (line >= firstLine) {
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lbound = middle;
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} else {
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ubound = middle;
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}
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}
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var result = {};
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var found = findLocation(pre, line, null, -1, false, result);
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if (!found) {
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return false;
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}
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var selection = window.content.getSelection();
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selection.removeAllRanges();
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// In our case, the range's startOffset is after "\n" on the previous line.
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// Tune the selection at the beginning of the next line and do some tweaking
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// to position the focusNode and the caret at the beginning of the line.
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selection.QueryInterface(nsISelectionPrivate)
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.interlinePosition = true;
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selection.addRange(result.range);
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if (!selection.isCollapsed) {
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selection.collapseToEnd();
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var offset = result.range.startOffset;
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var node = result.range.startContainer;
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if (offset < node.data.length) {
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// The same text node spans across the "\n", just focus where we were.
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selection.extend(node, offset);
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}
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else {
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// There is another tag just after the "\n", hook there. We need
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// to focus a safe point because there are edgy cases such as
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// <span>...\n</span><span>...</span> vs.
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// <span>...\n<span>...</span></span><span>...</span>
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node = node.nextSibling ? node.nextSibling : node.parentNode.nextSibling;
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selection.extend(node, 0);
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}
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}
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var selCon = getSelectionController();
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selCon.setDisplaySelection(nsISelectionController.SELECTION_ON);
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selCon.setCaretEnabled(true);
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selCon.setCaretVisibilityDuringSelection(true);
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// Scroll the beginning of the line into view.
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selCon.scrollSelectionIntoView(
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nsISelectionController.SELECTION_NORMAL,
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nsISelectionController.SELECTION_FOCUS_REGION,
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true);
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gLastLineFound = line;
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document.getElementById("statusbar-line-col").label = getViewSourceBundle()
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.getFormattedString("statusBarLineCol", [line, 1]);
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return true;
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}
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function updateStatusBar()
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{
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// Reset the coalesce flag.
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gSelectionListener.timeout = 0;
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var statusBarField = document.getElementById("statusbar-line-col");
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var selection = window.content.getSelection();
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if (!selection.focusNode) {
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statusBarField.label = '';
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return;
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}
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if (selection.focusNode.nodeType != Node.TEXT_NODE) {
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return;
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}
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var selCon = getSelectionController();
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selCon.setDisplaySelection(nsISelectionController.SELECTION_ON);
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selCon.setCaretEnabled(true);
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selCon.setCaretVisibilityDuringSelection(true);
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var interlinePosition = selection
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.QueryInterface(nsISelectionPrivate).interlinePosition;
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var result = {};
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findLocation(null, -1,
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selection.focusNode, selection.focusOffset, interlinePosition, result);
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statusBarField.label = getViewSourceBundle()
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.getFormattedString("statusBarLineCol", [result.line, result.col]);
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}
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//
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// Loops through the text lines in the pre element. The arguments are either
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// (pre, line) or (node, offset, interlinePosition). result is an out
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// argument. If (pre, line) are specified (and node == null), result.range is
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// a range spanning the specified line. If the (node, offset,
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// interlinePosition) are specified, result.line and result.col are the line
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// and column number of the specified offset in the specified node relative to
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// the whole file.
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//
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function findLocation(pre, line, node, offset, interlinePosition, result)
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{
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if (node && !pre) {
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//
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// Look upwards to find the current pre element.
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//
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for (pre = node;
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pre.nodeName != "PRE";
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pre = pre.parentNode);
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}
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//
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// The source document is made up of a number of pre elements with
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// id attributes in the format <pre id="line123">, meaning that
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// the first line in the pre element is number 123.
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//
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var curLine = parseInt(pre.id.substring(4));
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//
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// Walk through each of the text nodes and count newlines.
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//
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var treewalker = window.content.document
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.createTreeWalker(pre, NodeFilter.SHOW_TEXT, null, false);
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//
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// The column number of the first character in the current text node.
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//
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var firstCol = 1;
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var found = false;
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for (var textNode = treewalker.firstChild();
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textNode && !found;
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textNode = treewalker.nextNode()) {
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//
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// \r is not a valid character in the DOM, so we only check for \n.
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//
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var lineArray = textNode.data.split(/\n/);
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var lastLineInNode = curLine + lineArray.length - 1;
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//
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// Check if we can skip the text node without further inspection.
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//
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if (node ? (textNode != node) : (lastLineInNode < line)) {
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if (lineArray.length > 1) {
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firstCol = 1;
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}
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firstCol += lineArray[lineArray.length - 1].length;
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curLine = lastLineInNode;
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continue;
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}
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//
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// curPos is the offset within the current text node of the first
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// character in the current line.
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//
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for (var i = 0, curPos = 0;
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i < lineArray.length;
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curPos += lineArray[i++].length + 1) {
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if (i > 0) {
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curLine++;
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}
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if (node) {
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if (offset >= curPos && offset <= curPos + lineArray[i].length) {
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//
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// If we are right after the \n of a line and interlinePosition is
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// false, the caret looks as if it were at the end of the previous
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// line, so we display that line and column instead.
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//
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if (i > 0 && offset == curPos && !interlinePosition) {
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result.line = curLine - 1;
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var prevPos = curPos - lineArray[i - 1].length;
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result.col = (i == 1 ? firstCol : 1) + offset - prevPos;
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} else {
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result.line = curLine;
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result.col = (i == 0 ? firstCol : 1) + offset - curPos;
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}
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found = true;
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break;
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}
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} else {
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if (curLine == line && !("range" in result)) {
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result.range = document.createRange();
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result.range.setStart(textNode, curPos);
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//
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// This will always be overridden later, except when we look for
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// the very last line in the file (this is the only line that does
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// not end with \n).
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//
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result.range.setEndAfter(pre.lastChild);
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} else if (curLine == line + 1) {
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result.range.setEnd(textNode, curPos - 1);
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found = true;
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break;
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}
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}
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}
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}
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return found || ("range" in result);
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}
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//function to toggle long-line wrapping and set the view_source.wrap_long_lines
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|
//pref to persist the last state
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|
function wrapLongLines()
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{
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var myWrap = window.content.document.body;
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|
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if (myWrap.className == '')
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myWrap.className = 'wrap';
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else myWrap.className = '';
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|
|
//since multiple viewsource windows are possible, another window could have
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|
//affected the pref, so instead of determining the new pref value via the current
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|
//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 highlightSyntaxMenu = document.getElementById("menu_highlightSyntax");
|
|
var highlightSyntax = (highlightSyntaxMenu.getAttribute("checked") == "true");
|
|
gPrefs.setBoolPref("view_source.syntax_highlight", highlightSyntax);
|
|
|
|
var PageLoader = getBrowser().webNavigation.QueryInterface(pageLoaderIface);
|
|
PageLoader.loadPage(PageLoader.currentDescriptor, pageLoaderIface.DISPLAY_NORMAL);
|
|
}
|
|
|
|
// Fix for bug 136322: this function overrides the function in
|
|
// browser.js to call PageLoader.loadPage() instead of BrowserReloadWithFlags()
|
|
function BrowserSetForcedCharacterSet(aCharset)
|
|
{
|
|
var docCharset = getBrowser().docShell.QueryInterface(
|
|
Components.interfaces.nsIDocCharset);
|
|
docCharset.charset = aCharset;
|
|
var PageLoader = getBrowser().webNavigation.QueryInterface(pageLoaderIface);
|
|
PageLoader.loadPage(PageLoader.currentDescriptor, pageLoaderIface.DISPLAY_NORMAL);
|
|
}
|
|
|
|
function updateSavePageItems()
|
|
{
|
|
var autoDownload = gPrefs.getBoolPref("browser.download.autoDownload");
|
|
goSetMenuValue("savepage", autoDownload ? "valueSave" : "valueSaveAs");
|
|
}
|