gecko-dev/browser/base/content/browser-fullScreen.js

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JavaScript

# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
# 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/.
var FullScreen = {
_XULNS: "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul",
get _fullScrToggler() {
delete this._fullScrToggler;
return this._fullScrToggler = document.getElementById("fullscr-toggler");
},
toggle: function (event) {
var enterFS = window.fullScreen;
// We get the fullscreen event _before_ the window transitions into or out of FS mode.
if (event && event.type == "fullscreen")
enterFS = !enterFS;
// Toggle the View:FullScreen command, which controls elements like the
// fullscreen menuitem, and menubars.
let fullscreenCommand = document.getElementById("View:FullScreen");
if (enterFS) {
fullscreenCommand.setAttribute("checked", enterFS);
} else {
fullscreenCommand.removeAttribute("checked");
}
#ifdef XP_MACOSX
// Make sure the menu items are adjusted.
document.getElementById("enterFullScreenItem").hidden = enterFS;
document.getElementById("exitFullScreenItem").hidden = !enterFS;
#endif
// On OS X Lion we don't want to hide toolbars when entering fullscreen, unless
// we're entering DOM fullscreen, in which case we should hide the toolbars.
// If we're leaving fullscreen, then we'll go through the exit code below to
// make sure toolbars are made visible in the case of DOM fullscreen.
if (enterFS && this.useLionFullScreen) {
if (document.mozFullScreen) {
this.showXULChrome("toolbar", false);
}
else {
gNavToolbox.setAttribute("inFullscreen", true);
document.documentElement.setAttribute("inFullscreen", true);
}
return;
}
// show/hide menubars, toolbars (except the full screen toolbar)
this.showXULChrome("toolbar", !enterFS);
if (enterFS) {
// Add a tiny toolbar to receive mouseover and dragenter events, and provide affordance.
// This will help simulate the "collapse" metaphor while also requiring less code and
// events than raw listening of mouse coords. We don't add the toolbar in DOM full-screen
// mode, only browser full-screen mode.
if (!document.mozFullScreen) {
this._fullScrToggler.addEventListener("mouseover", this._expandCallback, false);
this._fullScrToggler.addEventListener("dragenter", this._expandCallback, false);
}
if (gPrefService.getBoolPref("browser.fullscreen.autohide"))
gBrowser.mPanelContainer.addEventListener("mousemove",
this._collapseCallback, false);
document.addEventListener("keypress", this._keyToggleCallback, false);
document.addEventListener("popupshown", this._setPopupOpen, false);
document.addEventListener("popuphidden", this._setPopupOpen, false);
// We don't animate the toolbar collapse if in DOM full-screen mode,
// as the size of the content area would still be changing after the
// mozfullscreenchange event fired, which could confuse content script.
this._shouldAnimate = !document.mozFullScreen;
this.mouseoverToggle(false);
// Autohide prefs
gPrefService.addObserver("browser.fullscreen", this, false);
}
else {
// The user may quit fullscreen during an animation
this._cancelAnimation();
gNavToolbox.style.marginTop = "";
if (this._isChromeCollapsed)
this.mouseoverToggle(true);
// This is needed if they use the context menu to quit fullscreen
this._isPopupOpen = false;
this.cleanup();
}
},
exitDomFullScreen : function() {
document.mozCancelFullScreen();
},
handleEvent: function (event) {
switch (event.type) {
case "activate":
if (document.mozFullScreen) {
this.showWarning(this.fullscreenDoc);
}
break;
case "transitionend":
if (event.propertyName == "opacity")
this.cancelWarning();
break;
}
},
enterDomFullscreen : function(event) {
if (!document.mozFullScreen)
return;
// However, if we receive a "MozEnteredDomFullScreen" event for a document
// which is not a subdocument of a currently active (ie. visible) browser
// or iframe, we know that we've switched to a different frame since the
// request to enter full-screen was made, so we should exit full-screen
// since the "full-screen document" isn't acutally visible.
if (!event.target.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIDocShell).isActive) {
document.mozCancelFullScreen();
return;
}
let focusManager = Cc["@mozilla.org/focus-manager;1"].getService(Ci.nsIFocusManager);
if (focusManager.activeWindow != window) {
// The top-level window has lost focus since the request to enter
// full-screen was made. Cancel full-screen.
document.mozCancelFullScreen();
return;
}
// Ensure the sidebar is hidden.
if (!document.getElementById("sidebar-box").hidden)
toggleSidebar();
if (gFindBarInitialized)
gFindBar.close();
this.showWarning(event.target);
// Exit DOM full-screen mode upon open, close, or change tab.
gBrowser.tabContainer.addEventListener("TabOpen", this.exitDomFullScreen);
gBrowser.tabContainer.addEventListener("TabClose", this.exitDomFullScreen);
gBrowser.tabContainer.addEventListener("TabSelect", this.exitDomFullScreen);
// Add listener to detect when the fullscreen window is re-focused.
// If a fullscreen window loses focus, we show a warning when the
// fullscreen window is refocused.
if (!this.useLionFullScreen) {
window.addEventListener("activate", this);
}
// Cancel any "hide the toolbar" animation which is in progress, and make
// the toolbar hide immediately.
this._cancelAnimation();
this.mouseoverToggle(false);
// Remove listeners on the full-screen toggler, so that mouseover
// the top of the screen will not cause the toolbar to re-appear.
this._fullScrToggler.removeEventListener("mouseover", this._expandCallback, false);
this._fullScrToggler.removeEventListener("dragenter", this._expandCallback, false);
},
cleanup: function () {
if (window.fullScreen) {
gBrowser.mPanelContainer.removeEventListener("mousemove",
this._collapseCallback, false);
document.removeEventListener("keypress", this._keyToggleCallback, false);
document.removeEventListener("popupshown", this._setPopupOpen, false);
document.removeEventListener("popuphidden", this._setPopupOpen, false);
gPrefService.removeObserver("browser.fullscreen", this);
this._fullScrToggler.removeEventListener("mouseover", this._expandCallback, false);
this._fullScrToggler.removeEventListener("dragenter", this._expandCallback, false);
this.cancelWarning();
gBrowser.tabContainer.removeEventListener("TabOpen", this.exitDomFullScreen);
gBrowser.tabContainer.removeEventListener("TabClose", this.exitDomFullScreen);
gBrowser.tabContainer.removeEventListener("TabSelect", this.exitDomFullScreen);
if (!this.useLionFullScreen)
window.removeEventListener("activate", this);
this.fullscreenDoc = null;
}
},
observe: function(aSubject, aTopic, aData)
{
if (aData == "browser.fullscreen.autohide") {
if (gPrefService.getBoolPref("browser.fullscreen.autohide")) {
gBrowser.mPanelContainer.addEventListener("mousemove",
this._collapseCallback, false);
}
else {
gBrowser.mPanelContainer.removeEventListener("mousemove",
this._collapseCallback, false);
}
}
},
// Event callbacks
_expandCallback: function()
{
FullScreen.mouseoverToggle(true);
},
_collapseCallback: function()
{
FullScreen.mouseoverToggle(false);
},
_keyToggleCallback: function(aEvent)
{
// if we can use the keyboard (eg Ctrl+L or Ctrl+E) to open the toolbars, we
// should provide a way to collapse them too.
if (aEvent.keyCode == aEvent.DOM_VK_ESCAPE) {
FullScreen._shouldAnimate = false;
FullScreen.mouseoverToggle(false, true);
}
// F6 is another shortcut to the address bar, but its not covered in OpenLocation()
else if (aEvent.keyCode == aEvent.DOM_VK_F6)
FullScreen.mouseoverToggle(true);
},
// Checks whether we are allowed to collapse the chrome
_isPopupOpen: false,
_isChromeCollapsed: false,
_safeToCollapse: function(forceHide)
{
if (!gPrefService.getBoolPref("browser.fullscreen.autohide"))
return false;
// a popup menu is open in chrome: don't collapse chrome
if (!forceHide && this._isPopupOpen)
return false;
// a textbox in chrome is focused (location bar anyone?): don't collapse chrome
if (document.commandDispatcher.focusedElement &&
document.commandDispatcher.focusedElement.ownerDocument == document &&
document.commandDispatcher.focusedElement.localName == "input") {
if (forceHide)
// hidden textboxes that still have focus are bad bad bad
document.commandDispatcher.focusedElement.blur();
else
return false;
}
return true;
},
_setPopupOpen: function(aEvent)
{
// Popups should only veto chrome collapsing if they were opened when the chrome was not collapsed.
// Otherwise, they would not affect chrome and the user would expect the chrome to go away.
// e.g. we wouldn't want the autoscroll icon firing this event, so when the user
// toggles chrome when moving mouse to the top, it doesn't go away again.
if (aEvent.type == "popupshown" && !FullScreen._isChromeCollapsed &&
aEvent.target.localName != "tooltip" && aEvent.target.localName != "window")
FullScreen._isPopupOpen = true;
else if (aEvent.type == "popuphidden" && aEvent.target.localName != "tooltip" &&
aEvent.target.localName != "window")
FullScreen._isPopupOpen = false;
},
// Autohide helpers for the context menu item
getAutohide: function(aItem)
{
aItem.setAttribute("checked", gPrefService.getBoolPref("browser.fullscreen.autohide"));
},
setAutohide: function()
{
gPrefService.setBoolPref("browser.fullscreen.autohide", !gPrefService.getBoolPref("browser.fullscreen.autohide"));
},
// Animate the toolbars disappearing
_shouldAnimate: true,
_isAnimating: false,
_animationTimeout: 0,
_animationHandle: 0,
_animateUp: function() {
// check again, the user may have done something before the animation was due to start
if (!window.fullScreen || !this._safeToCollapse(false)) {
this._isAnimating = false;
this._shouldAnimate = true;
return;
}
this._animateStartTime = window.mozAnimationStartTime;
if (!this._animationHandle)
this._animationHandle = window.mozRequestAnimationFrame(this);
},
sample: function (timeStamp) {
const duration = 1500;
const timePassed = timeStamp - this._animateStartTime;
const pos = timePassed >= duration ? 1 :
1 - Math.pow(1 - timePassed / duration, 4);
if (pos >= 1) {
// We've animated enough
this._cancelAnimation();
gNavToolbox.style.marginTop = "";
this.mouseoverToggle(false);
return;
}
gNavToolbox.style.marginTop = (gNavToolbox.boxObject.height * pos * -1) + "px";
this._animationHandle = window.mozRequestAnimationFrame(this);
},
_cancelAnimation: function() {
window.mozCancelAnimationFrame(this._animationHandle);
this._animationHandle = 0;
clearTimeout(this._animationTimeout);
this._isAnimating = false;
this._shouldAnimate = false;
},
cancelWarning: function(event) {
if (!this.warningBox)
return;
this.warningBox.removeEventListener("transitionend", this);
if (this.warningFadeOutTimeout) {
clearTimeout(this.warningFadeOutTimeout);
this.warningFadeOutTimeout = null;
}
// Ensure focus switches away from the (now hidden) warning box. If the user
// clicked buttons in the fullscreen key authorization UI, it would have been
// focused, and any key events would be directed at the (now hidden) chrome
// document instead of the target document.
gBrowser.selectedBrowser.focus();
this.warningBox.setAttribute("hidden", true);
this.warningBox.removeAttribute("fade-warning-out");
this.warningBox.removeAttribute("obscure-browser");
this.warningBox = null;
},
setFullscreenAllowed: function(isApproved) {
// The "remember decision" checkbox is hidden when showing for documents that
// the permission manager can't handle (documents with URIs without a host).
// We simply require those to be approved every time instead.
let rememberCheckbox = document.getElementById("full-screen-remember-decision");
let uri = this.fullscreenDoc.nodePrincipal.URI;
if (!rememberCheckbox.hidden) {
if (rememberCheckbox.checked)
Services.perms.add(uri,
"fullscreen",
isApproved ? Services.perms.ALLOW_ACTION : Services.perms.DENY_ACTION,
Services.perms.EXPIRE_NEVER);
else if (isApproved) {
// The user has only temporarily approved fullscren for this fullscreen
// session only. Add the permission (so Gecko knows to approve any further
// fullscreen requests for this host in this fullscreen session) but add
// a listener to revoke the permission when the chrome document exits
// fullscreen.
Services.perms.add(uri,
"fullscreen",
Services.perms.ALLOW_ACTION,
Services.perms.EXPIRE_SESSION);
let host = uri.host;
var onFullscreenchange = function onFullscreenchange(event) {
if (event.target == document && document.mozFullScreenElement == null) {
// The chrome document has left fullscreen. Remove the temporary permission grant.
Services.perms.remove(host, "fullscreen");
document.removeEventListener("mozfullscreenchange", onFullscreenchange);
}
}
document.addEventListener("mozfullscreenchange", onFullscreenchange);
}
}
if (this.warningBox)
this.warningBox.setAttribute("fade-warning-out", "true");
// If the document has been granted fullscreen, notify Gecko so it can resume
// any pending pointer lock requests, otherwise exit fullscreen; the user denied
// the fullscreen request.
if (isApproved)
Services.obs.notifyObservers(this.fullscreenDoc, "fullscreen-approved", "");
else
document.mozCancelFullScreen();
},
warningBox: null,
warningFadeOutTimeout: null,
fullscreenDoc: null,
// Shows the fullscreen approval UI, or if the domain has already been approved
// for fullscreen, shows a warning that the site has entered fullscreen for a short
// duration.
showWarning: function(targetDoc) {
if (!document.mozFullScreen ||
!gPrefService.getBoolPref("full-screen-api.approval-required"))
return;
// Set the strings on the fullscreen approval UI.
this.fullscreenDoc = targetDoc;
let uri = this.fullscreenDoc.nodePrincipal.URI;
let host = null;
try {
host = uri.host;
} catch (e) { }
let hostLabel = document.getElementById("full-screen-domain-text");
let rememberCheckbox = document.getElementById("full-screen-remember-decision");
let isApproved = false;
if (host) {
// Document's principal's URI has a host. Display a warning including the hostname and
// show UI to enable the user to permanently grant this host permission to enter fullscreen.
let utils = {};
Cu.import("resource://gre/modules/DownloadUtils.jsm", utils);
let displayHost = utils.DownloadUtils.getURIHost(uri.spec)[0];
let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
hostLabel.textContent = bundle.formatStringFromName("fullscreen.entered", [displayHost], 1);
hostLabel.removeAttribute("hidden");
rememberCheckbox.label = bundle.formatStringFromName("fullscreen.rememberDecision", [displayHost], 1);
rememberCheckbox.checked = false;
rememberCheckbox.removeAttribute("hidden");
// Note we only allow documents whose principal's URI has a host to
// store permission grants.
isApproved = Services.perms.testPermission(uri, "fullscreen") == Services.perms.ALLOW_ACTION;
} else {
hostLabel.setAttribute("hidden", "true");
rememberCheckbox.setAttribute("hidden", "true");
}
// Note: the warning box can be non-null if the warning box from the previous request
// wasn't hidden before another request was made.
if (!this.warningBox) {
this.warningBox = document.getElementById("full-screen-warning-container");
// Add a listener to clean up state after the warning is hidden.
this.warningBox.addEventListener("transitionend", this);
this.warningBox.removeAttribute("hidden");
} else {
if (this.warningFadeOutTimeout) {
clearTimeout(this.warningFadeOutTimeout);
this.warningFadeOutTimeout = null;
}
this.warningBox.removeAttribute("fade-warning-out");
}
// If fullscreen mode has not yet been approved for the fullscreen
// document's domain, show the approval UI and don't auto fade out the
// fullscreen warning box. Otherwise, we're just notifying of entry into
// fullscreen mode. Note if the resource's host is null, we must be
// showing a local file or a local data URI, and we require explicit
// approval every time.
let authUI = document.getElementById("full-screen-approval-pane");
if (isApproved) {
authUI.setAttribute("hidden", "true");
this.warningBox.removeAttribute("obscure-browser");
} else {
// Partially obscure the <browser> element underneath the approval UI.
this.warningBox.setAttribute("obscure-browser", "true");
authUI.removeAttribute("hidden");
}
// If we're not showing the fullscreen approval UI, we're just notifying the user
// of the transition, so set a timeout to fade the warning out after a few moments.
if (isApproved)
this.warningFadeOutTimeout =
setTimeout(
function() {
if (this.warningBox)
this.warningBox.setAttribute("fade-warning-out", "true");
}.bind(this),
3000);
},
mouseoverToggle: function(aShow, forceHide)
{
// Don't do anything if:
// a) we're already in the state we want,
// b) we're animating and will become collapsed soon, or
// c) we can't collapse because it would be undesirable right now
if (aShow != this._isChromeCollapsed || (!aShow && this._isAnimating) ||
(!aShow && !this._safeToCollapse(forceHide)))
return;
// browser.fullscreen.animateUp
// 0 - never animate up
// 1 - animate only for first collapse after entering fullscreen (default for perf's sake)
// 2 - animate every time it collapses
if (gPrefService.getIntPref("browser.fullscreen.animateUp") == 0)
this._shouldAnimate = false;
if (!aShow && this._shouldAnimate) {
this._isAnimating = true;
this._shouldAnimate = false;
this._animationTimeout = setTimeout(this._animateUp.bind(this), 800);
return;
}
// The chrome is collapsed so don't spam needless mousemove events
if (aShow) {
gBrowser.mPanelContainer.addEventListener("mousemove",
this._collapseCallback, false);
}
else {
gBrowser.mPanelContainer.removeEventListener("mousemove",
this._collapseCallback, false);
}
// Hiding/collapsing the toolbox interferes with the tab bar's scrollbox,
// so we just move it off-screen instead. See bug 430687.
gNavToolbox.style.marginTop =
aShow ? "" : -gNavToolbox.getBoundingClientRect().height + "px";
this._fullScrToggler.collapsed = aShow;
this._isChromeCollapsed = !aShow;
if (gPrefService.getIntPref("browser.fullscreen.animateUp") == 2)
this._shouldAnimate = true;
},
showXULChrome: function(aTag, aShow)
{
var els = document.getElementsByTagNameNS(this._XULNS, aTag);
for (let el of els) {
// XXX don't interfere with previously collapsed toolbars
if (el.getAttribute("fullscreentoolbar") == "true") {
if (!aShow) {
// Give the main nav bar and the tab bar the fullscreen context menu,
// otherwise remove context menu to prevent breakage
el.setAttribute("saved-context", el.getAttribute("context"));
if (el.id == "nav-bar" || el.id == "TabsToolbar")
el.setAttribute("context", "autohide-context");
else
el.removeAttribute("context");
// Set the inFullscreen attribute to allow specific styling
// in fullscreen mode
el.setAttribute("inFullscreen", true);
}
else {
if (el.hasAttribute("saved-context")) {
el.setAttribute("context", el.getAttribute("saved-context"));
el.removeAttribute("saved-context");
}
el.removeAttribute("inFullscreen");
}
} else {
// use moz-collapsed so it doesn't persist hidden/collapsed,
// so that new windows don't have missing toolbars
if (aShow)
el.removeAttribute("moz-collapsed");
else
el.setAttribute("moz-collapsed", "true");
}
}
if (aShow) {
gNavToolbox.removeAttribute("inFullscreen");
document.documentElement.removeAttribute("inFullscreen");
} else {
gNavToolbox.setAttribute("inFullscreen", true);
document.documentElement.setAttribute("inFullscreen", true);
}
var fullscreenctls = document.getElementById("window-controls");
var navbar = document.getElementById("nav-bar");
var ctlsOnTabbar = window.toolbar.visible;
if (fullscreenctls.parentNode == navbar && ctlsOnTabbar) {
fullscreenctls.removeAttribute("flex");
document.getElementById("TabsToolbar").appendChild(fullscreenctls);
}
else if (fullscreenctls.parentNode.id == "TabsToolbar" && !ctlsOnTabbar) {
fullscreenctls.setAttribute("flex", "1");
navbar.appendChild(fullscreenctls);
}
fullscreenctls.hidden = aShow;
}
};
XPCOMUtils.defineLazyGetter(FullScreen, "useLionFullScreen", function() {
// We'll only use OS X Lion full screen if we're
// * on OS X
// * on Lion or higher (Darwin 11+)
// * have fullscreenbutton="true"
#ifdef XP_MACOSX
return parseFloat(Services.sysinfo.getProperty("version")) >= 11 &&
document.documentElement.getAttribute("fullscreenbutton") == "true";
#else
return false;
#endif
});