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720 lines
22 KiB
JavaScript
720 lines
22 KiB
JavaScript
// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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Components.utils.import("resource://gre/modules/Services.jsm");
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Components.utils.import("resource://gre/modules/CharsetMenu.jsm");
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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var gLastLineFound = '';
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var gGoToLine = 0;
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[
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["gBrowser", "content"],
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["gViewSourceBundle", "viewSourceBundle"],
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["gContextMenu", "viewSourceContextMenu"]
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].forEach(function ([name, id]) {
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window.__defineGetter__(name, function () {
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var element = document.getElementById(id);
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if (!element)
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return null;
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delete window[name];
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return window[name] = element;
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});
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});
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// viewZoomOverlay.js uses this
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function getBrowser() {
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return gBrowser;
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}
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this.__defineGetter__("gPageLoader", function () {
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var webnav = getWebNavigation();
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if (!webnav)
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return null;
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delete this.gPageLoader;
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return this.gPageLoader = webnav.QueryInterface(Ci.nsIWebPageDescriptor);
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});
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var gSelectionListener = {
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timeout: 0,
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attached: false,
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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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gBrowser.droppedLinkHandler = function (event, url, name) {
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viewSource(url)
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event.preventDefault();
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}
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if (!isHistoryEnabled()) {
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// Disable the BACK and FORWARD commands and hide the related menu items.
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var viewSourceNavigation = document.getElementById("viewSourceNavigation");
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viewSourceNavigation.setAttribute("disabled", "true");
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viewSourceNavigation.setAttribute("hidden", "true");
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}
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}
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function isHistoryEnabled() {
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return !gBrowser.hasAttribute("disablehistory");
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}
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function getSelectionController() {
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return gBrowser.docShell
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.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsISelectionDisplay)
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.QueryInterface(Ci.nsISelectionController);
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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; // throw Components.results.NS_ERROR_FAILURE;
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var viewSrcUrl = "view-source:" + url;
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gBrowser.addEventListener("pagehide", onUnloadContent, true);
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gBrowser.addEventListener("pageshow", onLoadContent, true);
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gBrowser.addEventListener("click", onClickContent, false);
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var loadFromURL = true;
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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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// arg[4] - Whether charset was forced by the user
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if ("arguments" in window) {
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var arg;
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// Set the charset of the viewsource window...
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var charset;
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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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// Remember the charset here so that it can be used below in case
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// the document had a forced charset.
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charset = 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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// If the document had a forced charset, set it here also
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if (window.arguments.length >= 5) {
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arg = window.arguments[4];
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try {
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if (arg === true) {
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gBrowser.docShell.charset = charset;
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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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// Get any specified line to jump to.
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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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// Use the page descriptor to load the content from the cache (if
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// available).
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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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// 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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gPageLoader.loadPage(arg, gPageLoader.DISPLAY_AS_SOURCE);
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// The content was successfully loaded.
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loadFromURL = false;
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// Record the page load in the session history so <back> will work.
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var shEntrySource = arg.QueryInterface(Ci.nsISHEntry);
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var shEntry = Cc["@mozilla.org/browser/session-history-entry;1"].createInstance(Ci.nsISHEntry);
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shEntry.setURI(makeURI(viewSrcUrl, null, null));
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shEntry.setTitle(viewSrcUrl);
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shEntry.loadType = Ci.nsIDocShellLoadInfo.loadHistory;
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shEntry.cacheKey = shEntrySource.cacheKey;
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gBrowser.sessionHistory
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.QueryInterface(Ci.nsISHistoryInternal)
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.addEntry(shEntry, true);
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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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// Currently, an exception is thrown if the URL load fails...
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var loadFlags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
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getWebNavigation().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
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// attribute accordingly.
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var wraplonglinesPrefValue = Services.prefs.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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document.getElementById("menu_highlightSyntax")
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.setAttribute("checked",
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Services.prefs.getBoolPref("view_source.syntax_highlight"));
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window.addEventListener("AppCommand", HandleAppCommandEvent, true);
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window.addEventListener("MozSwipeGesture", HandleSwipeGesture, true);
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window.content.focus();
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}
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function onLoadContent()
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{
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// If the view source was opened with a "go to line" argument.
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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(Ci.nsISelectionPrivate)
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.addSelectionListener(gSelectionListener);
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gSelectionListener.attached = true;
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if (isHistoryEnabled())
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UpdateBackForwardCommands();
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}
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function onUnloadContent()
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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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document.getElementById('cmd_goToLine').setAttribute('disabled', 'true');
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// If we're not just unloading the initial "about:blank" which doesn't have
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// a selection listener, get rid of it so it doesn't try to fire after the
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// window has gone away.
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if (gSelectionListener.attached) {
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window.content.getSelection().QueryInterface(Ci.nsISelectionPrivate)
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.removeSelectionListener(gSelectionListener);
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gSelectionListener.attached = false;
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}
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}
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/**
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* Handle click events bubbling up from error page content
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*/
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function onClickContent(event) {
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// Don't trust synthetic events
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if (!event.isTrusted || event.target.localName != "button")
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return;
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var target = event.originalTarget;
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var errorDoc = target.ownerDocument;
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if (/^about:blocked/.test(errorDoc.documentURI)) {
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// The event came from a button on a malware/phishing block page
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// First check whether it's malware or phishing, so that we can
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// use the right strings/links
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var isMalware = /e=malwareBlocked/.test(errorDoc.documentURI);
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if (target == errorDoc.getElementById('getMeOutButton')) {
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// Instead of loading some safe page, just close the window
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window.close();
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} else if (target == errorDoc.getElementById('reportButton')) {
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// This is the "Why is this site blocked" button. For malware,
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// we can fetch a site-specific report, for phishing, we redirect
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// to the generic page describing phishing protection.
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if (isMalware) {
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// Get the stop badware "why is this blocked" report url,
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// append the current url, and go there.
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try {
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let reportURL = Services.urlFormatter.formatURLPref("browser.safebrowsing.malware.reportURL", true);
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reportURL += errorDoc.location.href.slice(12);
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openURL(reportURL);
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} catch (e) {
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Components.utils.reportError("Couldn't get malware report URL: " + e);
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}
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} else {
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// It's a phishing site, just link to the generic information page
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let url = Services.urlFormatter.formatURLPref("app.support.baseURL");
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openURL(url + "phishing-malware");
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}
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} else if (target == errorDoc.getElementById('ignoreWarningButton')) {
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// Allow users to override and continue through to the site
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gBrowser.loadURIWithFlags(content.location.href,
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Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CLASSIFIER,
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null, null, null);
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}
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}
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}
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function HandleAppCommandEvent(evt)
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{
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evt.stopPropagation();
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switch (evt.command) {
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case "Back":
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BrowserBack();
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break;
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case "Forward":
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BrowserForward();
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break;
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}
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}
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function HandleSwipeGesture(evt) {
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evt.stopPropagation();
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switch (evt.direction) {
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case SimpleGestureEvent.DIRECTION_LEFT:
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BrowserBack();
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break;
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case SimpleGestureEvent.DIRECTION_RIGHT:
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BrowserForward();
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break;
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case SimpleGestureEvent.DIRECTION_UP:
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goDoCommand("cmd_scrollTop");
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break;
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case SimpleGestureEvent.DIRECTION_DOWN:
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goDoCommand("cmd_scrollBottom");
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break;
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}
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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 ViewSourceReload()
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{
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gBrowser.reloadWithFlags(Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_PROXY |
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Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE);
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}
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// Strips the |view-source:| for internalSave()
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function ViewSourceSavePage()
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{
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internalSave(window.content.location.href.replace(/^view-source:/i, ""),
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null, null, null, null, null, "SaveLinkTitle",
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null, null, window.content.document, null, gPageLoader);
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}
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var PrintPreviewListener = {
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getPrintPreviewBrowser: function () {
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var browser = document.getElementById("ppBrowser");
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if (!browser) {
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browser = document.createElement("browser");
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browser.setAttribute("id", "ppBrowser");
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browser.setAttribute("flex", "1");
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document.getElementById("appcontent").
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insertBefore(browser, document.getElementById("FindToolbar"));
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}
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return browser;
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},
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getSourceBrowser: function () {
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return gBrowser;
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},
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getNavToolbox: function () {
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return document.getElementById("appcontent");
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},
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onEnter: function () {
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var toolbox = document.getElementById("viewSource-toolbox");
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toolbox.hidden = true;
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gBrowser.collapsed = true;
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},
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onExit: function () {
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document.getElementById("ppBrowser").collapsed = true;
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gBrowser.collapsed = false;
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document.getElementById("viewSource-toolbox").hidden = false;
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}
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}
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function getWebNavigation()
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{
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try {
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return gBrowser.webNavigation;
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} catch (e) {
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return null;
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}
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}
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function ViewSourceGoToLine()
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{
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var input = {value:gLastLineFound};
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for (;;) {
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var ok = Services.prompt.prompt(
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window,
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gViewSourceBundle.getString("goToLineTitle"),
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gViewSourceBundle.getString("goToLineText"),
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input,
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null,
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{value:0});
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if (!ok)
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return;
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var line = parseInt(input.value, 10);
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if (!(line > 0)) {
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Services.prompt.alert(window,
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gViewSourceBundle.getString("invalidInputTitle"),
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gViewSourceBundle.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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Services.prompt.alert(window,
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gViewSourceBundle.getString("outOfRangeTitle"),
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gViewSourceBundle.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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// 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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// However, in the plain text case, we have only one pre without an
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// attribute, so assume it begins on line 1.
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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 = pre.id ? parseInt(pre.id.substring(4)) : 1;
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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(Ci.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(Ci.nsISelectionController.SELECTION_ON);
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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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Ci.nsISelectionController.SELECTION_NORMAL,
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Ci.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 =
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gViewSourceBundle.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(Ci.nsISelectionController.SELECTION_ON);
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selCon.setCaretVisibilityDuringSelection(true);
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var interlinePosition = selection.QueryInterface(Ci.nsISelectionPrivate)
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.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 = gViewSourceBundle.getFormattedString(
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"statusBarLineCol", [result.line, result.col]);
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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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function findLocation(pre, line, node, offset, interlinePosition, result)
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{
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if (node && !pre) {
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// Look upwards to find the current pre element.
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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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// 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.
|
|
// However, in the plain text case, there is only one <pre> without an id,
|
|
// so assume line 1.
|
|
var curLine = pre.id ? parseInt(pre.id.substring(4)) : 1;
|
|
|
|
// Walk through each of the text nodes and count newlines.
|
|
var treewalker = window.content.document
|
|
.createTreeWalker(pre, NodeFilter.SHOW_TEXT, null);
|
|
|
|
// The column number of the first character in the current text node.
|
|
var firstCol = 1;
|
|
|
|
var found = false;
|
|
for (var textNode = treewalker.firstChild();
|
|
textNode && !found;
|
|
textNode = treewalker.nextNode()) {
|
|
|
|
// \r is not a valid character in the DOM, so we only check for \n.
|
|
var lineArray = textNode.data.split(/\n/);
|
|
var lastLineInNode = curLine + lineArray.length - 1;
|
|
|
|
// Check if we can skip the text node without further inspection.
|
|
if (node ? (textNode != node) : (lastLineInNode < line)) {
|
|
if (lineArray.length > 1) {
|
|
firstCol = 1;
|
|
}
|
|
firstCol += lineArray[lineArray.length - 1].length;
|
|
curLine = lastLineInNode;
|
|
continue;
|
|
}
|
|
|
|
// curPos is the offset within the current text node of the first
|
|
// character in the current line.
|
|
for (var i = 0, curPos = 0;
|
|
i < lineArray.length;
|
|
curPos += lineArray[i++].length + 1) {
|
|
|
|
if (i > 0) {
|
|
curLine++;
|
|
}
|
|
|
|
if (node) {
|
|
if (offset >= curPos && offset <= curPos + lineArray[i].length) {
|
|
// If we are right after the \n of a line and interlinePosition is
|
|
// false, the caret looks as if it were at the end of the previous
|
|
// line, so we display that line and column instead.
|
|
|
|
if (i > 0 && offset == curPos && !interlinePosition) {
|
|
result.line = curLine - 1;
|
|
var prevPos = curPos - lineArray[i - 1].length;
|
|
result.col = (i == 1 ? firstCol : 1) + offset - prevPos;
|
|
} else {
|
|
result.line = curLine;
|
|
result.col = (i == 0 ? firstCol : 1) + offset - curPos;
|
|
}
|
|
found = true;
|
|
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
if (curLine == line && !("range" in result)) {
|
|
result.range = document.createRange();
|
|
result.range.setStart(textNode, curPos);
|
|
|
|
// This will always be overridden later, except when we look for
|
|
// the very last line in the file (this is the only line that does
|
|
// not end with \n).
|
|
result.range.setEndAfter(pre.lastChild);
|
|
|
|
} else if (curLine == line + 1) {
|
|
result.range.setEnd(textNode, curPos - 1);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return found || ("range" in result);
|
|
}
|
|
|
|
// Toggle long-line wrapping and sets the view_source.wrap_long_lines
|
|
// pref to persist the last state.
|
|
function wrapLongLines()
|
|
{
|
|
var myWrap = window.content.document.body;
|
|
myWrap.classList.toggle("wrap");
|
|
|
|
// 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.classList.
|
|
Services.prefs.setBoolPref("view_source.wrap_long_lines", myWrap.classList.contains("wrap"));
|
|
}
|
|
|
|
// Toggles syntax highlighting and sets 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");
|
|
Services.prefs.setBoolPref("view_source.syntax_highlight", highlightSyntax);
|
|
|
|
gPageLoader.loadPage(gPageLoader.currentDescriptor, gPageLoader.DISPLAY_NORMAL);
|
|
}
|
|
|
|
// Reload after change to character encoding or autodetection
|
|
//
|
|
// Fix for bug 136322: this function overrides the function in
|
|
// browser.js to call PageLoader.loadPage() instead of BrowserReloadWithFlags()
|
|
function BrowserCharsetReload()
|
|
{
|
|
if (isHistoryEnabled()) {
|
|
gPageLoader.loadPage(gPageLoader.currentDescriptor,
|
|
gPageLoader.DISPLAY_NORMAL);
|
|
} else {
|
|
gBrowser.reloadWithFlags(Ci.nsIWebNavigation.LOAD_FLAGS_CHARSET_CHANGE);
|
|
}
|
|
}
|
|
|
|
function BrowserSetCharacterSet(aEvent)
|
|
{
|
|
if (aEvent.target.hasAttribute("charset"))
|
|
gBrowser.docShell.charset = aEvent.target.getAttribute("charset");
|
|
BrowserCharsetReload();
|
|
}
|
|
|
|
function BrowserForward(aEvent) {
|
|
try {
|
|
gBrowser.goForward();
|
|
}
|
|
catch(ex) {
|
|
}
|
|
}
|
|
|
|
function BrowserBack(aEvent) {
|
|
try {
|
|
gBrowser.goBack();
|
|
}
|
|
catch(ex) {
|
|
}
|
|
}
|
|
|
|
function UpdateBackForwardCommands() {
|
|
var backBroadcaster = document.getElementById("Browser:Back");
|
|
var forwardBroadcaster = document.getElementById("Browser:Forward");
|
|
|
|
if (getWebNavigation().canGoBack)
|
|
backBroadcaster.removeAttribute("disabled");
|
|
else
|
|
backBroadcaster.setAttribute("disabled", "true");
|
|
|
|
if (getWebNavigation().canGoForward)
|
|
forwardBroadcaster.removeAttribute("disabled");
|
|
else
|
|
forwardBroadcaster.setAttribute("disabled", "true");
|
|
}
|
|
|
|
function contextMenuShowing() {
|
|
var isLink = false;
|
|
var isEmail = false;
|
|
if (gContextMenu.triggerNode && gContextMenu.triggerNode.localName == 'a') {
|
|
if (gContextMenu.triggerNode.href.indexOf('view-source:') == 0)
|
|
isLink = true;
|
|
if (gContextMenu.triggerNode.href.indexOf('mailto:') == 0)
|
|
isEmail = true;
|
|
}
|
|
document.getElementById('context-copyLink').hidden = !isLink;
|
|
document.getElementById('context-copyEmail').hidden = !isEmail;
|
|
}
|
|
|
|
function contextMenuCopyLinkOrEmail() {
|
|
if (!gContextMenu.triggerNode)
|
|
return;
|
|
|
|
var href = gContextMenu.triggerNode.href;
|
|
var clipboard = Cc['@mozilla.org/widget/clipboardhelper;1'].
|
|
getService(Ci.nsIClipboardHelper);
|
|
clipboard.copyString(href.substring(href.indexOf(':') + 1), document);
|
|
}
|