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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
var EXPORTED_SYMBOLS = ["UrlbarValueFormatter"];
const { XPCOMUtils } = ChromeUtils.import(
);
XPCOMUtils.defineLazyModuleGetters(this, {
});
/**
* Applies URL highlighting and other styling to the text in the urlbar input,
* depending on the text.
*/
class UrlbarValueFormatter {
/**
* @param {UrlbarInput} urlbarInput
*/
constructor(urlbarInput) {
this.urlbarInput = urlbarInput;
this.window = this.urlbarInput.window;
this.document = this.window.document;
// This is used only as an optimization to avoid removing formatting in
// the _remove* format methods when no formatting is actually applied.
this._formattingApplied = false;
this.window.addEventListener("resize", this);
}
get inputField() {
return this.urlbarInput.inputField;
}
get scheme() {
return this.urlbarInput.querySelector("#urlbar-scheme");
}
async update() {
// _getUrlMetaData does URI fixup, which depends on the search service, so
// make sure it's initialized. It can be uninitialized here on session
// restore. Skip this if the service is already initialized in order to
// avoid the async call in the common case. However, we can't access
// Service.search before first paint (delayed startup) because there's a
// performance test that prohibits it, so first bail if delayed startup
// isn't finished.
if (!this.window.gBrowserInit.delayedStartupFinished) {
return;
}
if (!Services.search.isInitialized) {
let instance = (this._updateInstance = {});
await Services.search.init();
if (this._updateInstance != instance) {
return;
}
delete this._updateInstance;
}
// If this window is being torn down, stop here
if (!this.window.docShell) {
return;
}
// Cleanup that must be done in any case, even if there's no value.
this.urlbarInput.removeAttribute("domaindir");
this.scheme.value = "";
if (!this.inputField.value) {
return;
}
// Remove the current formatting.
this._removeURLFormat();
this._removeSearchAliasFormat();
// Apply new formatting. Formatter methods should return true if they
// successfully formatted the value and false if not. We apply only
// one formatter at a time, so we stop at the first successful one.
this._formattingApplied = this._formatURL() || this._formatSearchAlias();
}
_ensureFormattedHostVisible(urlMetaData) {
// Used to avoid re-entrance in the requestAnimationFrame callback.
let instance = (this._formatURLInstance = {});
// Make sure the host is always visible. Since it is aligned on
// the first strong directional character, we set scrollLeft
// appropriately to ensure the domain stays visible in case of an
// overflow.
this.window.requestAnimationFrame(() => {
// Check for re-entrance. On focus change this formatting code is
// invoked regardless, thus this should be enough.
if (this._formatURLInstance != instance) {
return;
}
// In the future, for example in bug 525831, we may add a forceRTL
// char just after the domain, and in such a case we should not
// scroll to the left.
urlMetaData = urlMetaData || this._getUrlMetaData();
if (!urlMetaData) {
this.urlbarInput.removeAttribute("domaindir");
return;
}
let { url, preDomain, domain } = urlMetaData;
let directionality = this.window.windowUtils.getDirectionFromText(domain);
if (
directionality == this.window.windowUtils.DIRECTION_RTL &&
url[preDomain.length + domain.length] != "\u200E"
) {
this.urlbarInput.setAttribute("domaindir", "rtl");
this.inputField.scrollLeft = this.inputField.scrollLeftMax;
} else {
this.urlbarInput.setAttribute("domaindir", "ltr");
this.inputField.scrollLeft = 0;
}
});
}
_getUrlMetaData() {
if (this.urlbarInput.focused) {
return null;
}
let url = this.inputField.value;
let browser = this.window.gBrowser.selectedBrowser;
// Since doing a full URIFixup and offset calculations is expensive, we
// keep the metadata cached in the browser itself, so when switching tabs
// we can skip most of this.
if (browser._urlMetaData && browser._urlMetaData.url == url) {
return browser._urlMetaData.data;
}
browser._urlMetaData = { url, data: null };
// Get the URL from the fixup service:
let flags =
Services.uriFixup.FIXUP_FLAG_FIX_SCHEME_TYPOS |
Services.uriFixup.FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP;
if (PrivateBrowsingUtils.isWindowPrivate(this.window)) {
flags |= Services.uriFixup.FIXUP_FLAG_PRIVATE_CONTEXT;
}
let uriInfo;
try {
uriInfo = Services.uriFixup.getFixupURIInfo(url, flags);
} catch (ex) {}
// Ignore if we couldn't make a URI out of this, the URI resulted in a search,
// or the URI has a non-http(s)/ftp protocol.
if (
!uriInfo ||
!uriInfo.fixedURI ||
uriInfo.keywordProviderName ||
!["http", "https", "ftp"].includes(uriInfo.fixedURI.scheme)
) {
return null;
}
// If we trimmed off the http scheme, ensure we stick it back on before
// trying to figure out what domain we're accessing, so we don't get
// confused by user:pass@host http URLs. We later use
// trimmedLength to ensure we don't count the length of a trimmed protocol
// when determining which parts of the URL to highlight as "preDomain".
let trimmedLength = 0;
if (uriInfo.fixedURI.scheme == "http" && !url.startsWith("http://")) {
url = "http://" + url;
trimmedLength = "http://".length;
}
// This RegExp is not a perfect match, and for specially crafted URLs it may
// get the host wrong; for safety reasons we will later compare the found
// host with the one that will actually be loaded.
let matchedURL = url.match(
/^(([a-z]+:\/\/)(?:[^\/#?]+@)?)(\S+?)(?::\d+)?\s*(?:[\/#?]|$)/
);
if (!matchedURL) {
return null;
}
let [, preDomain, schemeWSlashes, domain] = matchedURL;
// If the found host differs from the fixed URI one, we can't properly
// highlight it. To stay on the safe side, we clobber user's input with
// the fixed URI and apply highlight to that one instead.
let replaceUrl = false;
try {
replaceUrl =
Services.io.newURI("http://" + domain).displayHost !=
uriInfo.fixedURI.displayHost;
} catch (ex) {
return null;
}
if (replaceUrl) {
if (this._inGetUrlMetaData) {
// Protect from infinite recursion.
return null;
}
try {
this._inGetUrlMetaData = true;
this.window.gBrowser.userTypedValue = null;
this.urlbarInput.setURI(uriInfo.fixedURI);
return this._getUrlMetaData();
} finally {
this._inGetUrlMetaData = false;
}
}
return (browser._urlMetaData.data = {
domain,
origin: uriInfo.fixedURI.host,
preDomain,
schemeWSlashes,
trimmedLength,
url,
});
}
_removeURLFormat() {
if (!this._formattingApplied) {
return;
}
let controller = this.urlbarInput.editor.selectionController;
let strikeOut = controller.getSelection(controller.SELECTION_URLSTRIKEOUT);
strikeOut.removeAllRanges();
let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
selection.removeAllRanges();
this._formatScheme(controller.SELECTION_URLSTRIKEOUT, true);
this._formatScheme(controller.SELECTION_URLSECONDARY, true);
this.inputField.style.setProperty("--urlbar-scheme-size", "0px");
}
/**
* If the input value is a URL and the input is not focused, this
* formatter method highlights the domain, and if mixed content is present,
* it crosses out the https scheme. It also ensures that the host is
* visible (not scrolled out of sight).
*
* @returns {boolean}
* True if formatting was applied and false if not.
*/
_formatURL() {
let urlMetaData = this._getUrlMetaData();
if (!urlMetaData) {
return false;
}
let {
domain,
origin,
preDomain,
schemeWSlashes,
trimmedLength,
url,
} = urlMetaData;
// We strip http, so we should not show the scheme box for it.
if (!UrlbarPrefs.get("trimURLs") || schemeWSlashes != "http://") {
this.scheme.value = schemeWSlashes;
this.inputField.style.setProperty(
"--urlbar-scheme-size",
schemeWSlashes.length + "ch"
);
}
this._ensureFormattedHostVisible(urlMetaData);
if (!UrlbarPrefs.get("formatting.enabled")) {
return false;
}
let editor = this.urlbarInput.editor;
let controller = editor.selectionController;
this._formatScheme(controller.SELECTION_URLSECONDARY);
let textNode = editor.rootElement.firstChild;
// Strike out the "https" part if mixed active content is loaded.
if (
this.urlbarInput.getAttribute("pageproxystate") == "valid" &&
url.startsWith("https:") &&
this.window.gBrowser.securityUI.state &
Ci.nsIWebProgressListener.STATE_LOADED_MIXED_ACTIVE_CONTENT
) {
let range = this.document.createRange();
range.setStart(textNode, 0);
range.setEnd(textNode, 5);
let strikeOut = controller.getSelection(
controller.SELECTION_URLSTRIKEOUT
);
strikeOut.addRange(range);
this._formatScheme(controller.SELECTION_URLSTRIKEOUT);
}
let baseDomain = domain;
let subDomain = "";
try {
baseDomain = Services.eTLD.getBaseDomainFromHost(origin);
if (!domain.endsWith(baseDomain)) {
// getBaseDomainFromHost converts its resultant to ACE.
let IDNService = Cc["@mozilla.org/network/idn-service;1"].getService(
Ci.nsIIDNService
);
baseDomain = IDNService.convertACEtoUTF8(baseDomain);
}
} catch (e) {}
if (baseDomain != domain) {
subDomain = domain.slice(0, -baseDomain.length);
}
let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
let rangeLength = preDomain.length + subDomain.length - trimmedLength;
if (rangeLength) {
let range = this.document.createRange();
range.setStart(textNode, 0);
range.setEnd(textNode, rangeLength);
selection.addRange(range);
}
let startRest = preDomain.length + domain.length - trimmedLength;
if (startRest < url.length - trimmedLength) {
let range = this.document.createRange();
range.setStart(textNode, startRest);
range.setEnd(textNode, url.length - trimmedLength);
selection.addRange(range);
}
return true;
}
_formatScheme(selectionType, clear) {
let editor = this.scheme.editor;
let controller = editor.selectionController;
let textNode = editor.rootElement.firstChild;
let selection = controller.getSelection(selectionType);
if (clear) {
selection.removeAllRanges();
} else {
let r = this.document.createRange();
r.setStart(textNode, 0);
r.setEnd(textNode, textNode.textContent.length);
selection.addRange(r);
}
}
_removeSearchAliasFormat() {
if (!this._formattingApplied) {
return;
}
let selection = this.urlbarInput.editor.selectionController.getSelection(
Ci.nsISelectionController.SELECTION_FIND
);
selection.removeAllRanges();
}
/**
* If the input value starts with an @engine search alias, this highlights it.
*
* @returns {boolean}
* True if formatting was applied and false if not.
*/
_formatSearchAlias() {
if (!UrlbarPrefs.get("formatting.enabled")) {
return false;
}
let editor = this.urlbarInput.editor;
let textNode = editor.rootElement.firstChild;
let value = textNode.textContent;
let trimmedValue = value.trim();
if (
!trimmedValue.startsWith("@") ||
(this.urlbarInput.popup || this.urlbarInput.view).oneOffSearchButtons
.selectedButton
) {
return false;
}
let alias = this._getSearchAlias();
if (!alias) {
return false;
}
// Make sure the current input starts with the alias because it can change
// without the popup results changing. Most notably that happens when the
// user performs a search using an alias: The popup closes (preserving its
// results), the search results page loads, and the input value is set to
// the URL of the page.
if (trimmedValue != alias && !trimmedValue.startsWith(alias + " ")) {
return false;
}
let index = value.indexOf(alias);
if (index < 0) {
return false;
}
// We abuse the SELECTION_FIND selection type to do our highlighting.
// It's the only type that works with Selection.setColors().
let selection = editor.selectionController.getSelection(
Ci.nsISelectionController.SELECTION_FIND
);
let range = this.document.createRange();
range.setStart(textNode, index);
range.setEnd(textNode, index + alias.length);
selection.addRange(range);
let fg = "#2362d7";
let bg = "#d2e6fd";
// Selection.setColors() will swap the given foreground and background
// colors if it detects that the contrast between the background
// color and the frame color is too low. Normally we don't want that
// to happen; we want it to use our colors as given (even if setColors
// thinks the contrast is too low). But it's a nice feature for non-
// default themes, where the contrast between our background color and
// the input's frame color might actually be too low. We can
// (hackily) force setColors to use our colors as given by passing
// them as the alternate colors. Otherwise, allow setColors to swap
// them, which we can do by passing "currentColor". See
// nsTextPaintStyle::GetHighlightColors for details.
if (
this.document.documentElement.querySelector(":-moz-lwtheme") ||
(AppConstants.platform == "win" &&
this.window.matchMedia("(-moz-windows-default-theme: 0)").matches)
) {
// non-default theme(s)
selection.setColors(fg, bg, "currentColor", "currentColor");
} else {
// default themes
selection.setColors(fg, bg, fg, bg);
}
return true;
}
_getSearchAlias() {
// To determine whether the input contains a valid alias, check if the
// selected result is a search result with an alias. If there is no selected
// result, we check the first result in the view, for cases when we do not
// highlight token alias results. The selected result is null when the popup
// is closed, but we want to continue highlighting the alias when the popup
// is closed, and that's why we keep around the previously selected result
// in _selectedResult.
this._selectedResult =
this.urlbarInput.view.selectedResult ||
this.urlbarInput.view.getResultAtIndex(0) ||
this._selectedResult;
if (
this._selectedResult &&
this._selectedResult.type == UrlbarUtils.RESULT_TYPE.SEARCH
) {
return this._selectedResult.payload.keyword || null;
}
return null;
}
/**
* Passes DOM events to the _on_<event type> methods.
* @param {Event} event
* DOM event.
*/
handleEvent(event) {
let methodName = "_on_" + event.type;
if (methodName in this) {
this[methodName](event);
} else {
throw new Error("Unrecognized UrlbarValueFormatter event: " + event.type);
}
}
_on_resize(event) {
if (event.target != this.window) {
return;
}
// Make sure the host remains visible in the input field when the window is
// resized. We don't want to hurt resize performance though, so do this
// only after resize events have stopped and a small timeout has elapsed.
if (this._resizeThrottleTimeout) {
this.window.clearTimeout(this._resizeThrottleTimeout);
}
this._resizeThrottleTimeout = this.window.setTimeout(() => {
this._resizeThrottleTimeout = null;
this._ensureFormattedHostVisible();
}, 100);
}
}