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|
/* -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
//
// This file calls getElementById without waiting for an onload event, so it
// must have a defer attribute or be included at the end of the <body>.
//
// This module is responsible for launching apps and for allowing
// the user to switch among apps and kill apps. Specifically, it handles:
// launching apps,
// killing apps
// keeping track of the set of running apps (which we call tasks here)
// keeping track of which task is displayed (the foreground task)
// changing the foreground task
// hiding all apps to display the homescreen
// displaying the app switcher to allow the user to switch and kill apps
// performing appropriate transition animations between:
// the homescreen and an app
// the homescreen and the switcher
// an app and the homescreen
// the switcher and the homescreen
// the switcher and the current foreground task
// the switcher and a different task
// Handling Home key events to switch to the homescreen and the switcher
//
// The public API of the module is small. It defines an WindowManager object
// with these methods:
//
// launch(origin): switch to the specified running app
// kill(origin, callback): stop specified app
// reload(origin): reload the given app
// getDisplayedApp(): return the origin of the currently displayed app
// setOrientationForApp(origin): set the phone to orientation to a given app
// getAppFrame(origin): returns the iframe element for the specified origin
// which is assumed to be running. This is only currently used
// for tests and chrome stuff: see the end of the file
// getRunningApps(): get the app references of the running apps.
//
// TODO
// The "origin" does not actually refer to app's origin but rather a identifier
// of the app reference that one gets from |getDisplayedApp()| or
// iterates |getRunningApps|. The string is make up of the specified
// launching entry point, origin, or the website url launched by wrapper.
// It would be ideal if the variable get correctly named and it's rule is being
// properly documented.
// See https://bugzilla.mozilla.org/show_bug.cgi?id=796629
//
var WindowManager = (function() {
'use strict';
function debug(str) {
dump('WindowManager: ' + str + '\n');
}
// Holds the origin of the home screen, which should be the first
// app we launch through web activity during boot
var homescreen = null;
var homescreenURL = '';
var homescreenManifestURL = '';
var ftu = null;
var ftuManifestURL = '';
var ftuURL = '';
var isRunningFirstRunApp = false;
// keep the reference of inline activity frame here
var inlineActivityFrames = [];
var activityCallerOrigin = '';
// Some document elements we use
var windows = document.getElementById('windows');
var screenElement = document.getElementById('screen');
var wrapperHeader = document.querySelector('#wrapper-activity-indicator');
var wrapperFooter = document.querySelector('#wrapper-footer');
var kTransitionTimeout = 1000;
// Set this to true to debugging the transitions and state change
var slowTransition = false;
if (slowTransition) {
windows.classList.add('slow-transition');
}
//
// The set of running apps.
// This is a map from app origin to an object like this:
// {
// name: the app's name
// manifest: the app's manifest object
// frame: the iframe element that the app is displayed in
// launchTime: last time when app gets active
// }
//
var runningApps = {};
var numRunningApps = 0; // appendFrame() and removeFrame() maintain this count
var nextAppId = 0; // to give each app's iframe a unique id attribute
// The origin of the currently displayed app, or null if there isn't one
var displayedApp = null;
// Function to hide init starting logo
function handleInitlogo(callback) {
var initlogo = document.getElementById('initlogo');
initlogo.classList.add('hide');
initlogo.addEventListener('transitionend', function delInitlogo() {
initlogo.removeEventListener('transitionend', delInitlogo);
initlogo.parentNode.removeChild(initlogo);
if (callback) {
callback();
}
});
};
// Public function. Return the origin of the currently displayed app
// or null if there is none.
function getDisplayedApp() {
return displayedApp || null;
}
function requireFullscreen(origin) {
var app = runningApps[origin];
if (!app)
return false;
var manifest = app.manifest;
if (manifest.entry_points && manifest.type == 'certified') {
var entryPoint = manifest.entry_points[origin.split('/')[3]];
if (entryPoint)
return entryPoint.fullscreen;
return false;
} else {
return manifest.fullscreen;
}
}
// Make the specified app the displayed app.
// Public function. Pass null to make the homescreen visible
function launch(origin) {
// If the origin is indeed valid we make that app as the displayed app.
if (isRunning(origin)) {
setDisplayedApp(origin);
return;
}
// If the origin is null, make the homescreen visible.
if (origin == null) {
setDisplayedApp(homescreen);
return;
}
// At this point, we have no choice but to show the homescreen.
// We cannot launch/relaunch a given app based on the "origin" because
// we would need the manifest URL and the specific entry point.
console.warn('No running app is being identified as "' + origin + '". ' +
'Showing home screen instead.');
setDisplayedApp(homescreen);
}
function isRunning(origin) {
return runningApps.hasOwnProperty(origin);
}
function getAppFrame(origin) {
if (isRunning(origin))
return runningApps[origin].frame;
else
return null;
}
// Set the size of the app's iframe to match the size of the screen.
// We have to call this on resize events (which happen when the
// phone orientation is changed). And also when an app is launched
// and each time an app is brought to the front, since the
// orientation could have changed since it was last displayed
function setAppSize(origin, changeActivityFrame) {
var app = runningApps[origin];
if (!app)
return;
var frame = app.frame;
var manifest = app.manifest;
var cssWidth = window.innerWidth + 'px';
var cssHeight = window.innerHeight - StatusBar.height;
if ('wrapper' in frame.dataset) {
cssHeight -= 10;
}
cssHeight += 'px';
if (!screenElement.classList.contains('attention') &&
requireFullscreen(origin)) {
cssHeight = window.innerHeight + 'px';
}
frame.style.width = cssWidth;
frame.style.height = cssHeight;
// We will call setInlineActivityFrameSize()
// if changeActivityFrame is not explicitly set to false.
if (changeActivityFrame !== false)
setInlineActivityFrameSize();
}
// App's height is relevant to keyboard height
function setAppHeight(keyboardHeight) {
var app = runningApps[displayedApp];
if (!app)
return;
var frame = app.frame;
var manifest = app.manifest;
var cssHeight =
window.innerHeight - StatusBar.height - keyboardHeight + 'px';
if (!screenElement.classList.contains('attention') &&
requireFullscreen(displayedApp)) {
cssHeight = window.innerHeight - keyboardHeight + 'px';
}
frame.style.height = cssHeight;
setInlineActivityFrameSize();
}
// Copy the dimension of the currently displayed app
function setInlineActivityFrameSize() {
if (!inlineActivityFrames.length)
return;
var app = runningApps[displayedApp];
var appFrame = app.frame;
var frame = inlineActivityFrames[inlineActivityFrames.length - 1];
frame.style.width = appFrame.style.width;
if (document.mozFullScreen) {
frame.style.height = window.innerHeight + 'px';
frame.style.top = '0px';
} else {
if ('wrapper' in appFrame.dataset) {
frame.style.height = window.innerHeight - StatusBar.height + 'px';
} else {
frame.style.height = appFrame.style.height;
}
frame.style.top = appFrame.offsetTop + 'px';
}
}
function setFrameBackgroundBlob(frame, blob, transparent) {
URL.revokeObjectURL(frame.dataset.bgObjectURL);
delete frame.dataset.bgObjectURL;
var objectURL = URL.createObjectURL(blob);
frame.dataset.bgObjectURL = objectURL;
var backgroundCSS =
'-moz-linear-gradient(top, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.5) 100%),' +
'url(' + objectURL + '),' +
((transparent) ? 'transparent' : '#fff');
frame.style.background = backgroundCSS;
}
function clearFrameBackground(frame) {
if (!('bgObjectURL' in frame.dataset))
return;
URL.revokeObjectURL(frame.dataset.bgObjectURL);
delete frame.dataset.bgObjectURL;
frame.style.background = '';
}
var openFrame = null;
var closeFrame = null;
var openCallback = null;
var closeCallback = null;
var transitionOpenCallback = null;
var transitionCloseCallback = null;
// Use setOpenFrame() to reset the CSS classes set
// to the current openFrame (before overwriting the reference)
function setOpenFrame(frame) {
if (openFrame) {
removeFrameClasses(openFrame);
}
openFrame = frame;
}
// Use setCloseFrame() to reset the CSS classes set
// to the current closeFrame (before overwriting the reference)
function setCloseFrame(frame) {
if (closeFrame) {
removeFrameClasses(closeFrame);
// closeFrame should not be set to active
closeFrame.classList.remove('active');
}
closeFrame = frame;
}
// Remove these visible className from frame so we will not ended
// up having a frozen frame in the middle of the transition
function removeFrameClasses(frame) {
var classNames = ['opening', 'closing', 'opening-switching',
'opening-card', 'closing-card'];
var classList = frame.classList;
classNames.forEach(function removeClass(className) {
classList.remove(className);
});
}
windows.addEventListener('transitionend', function frameTransitionend(evt) {
var prop = evt.propertyName;
var frame = evt.target;
if (prop !== 'transform')
return;
var classList = frame.classList;
if (classList.contains('inlineActivity')) {
if (classList.contains('active')) {
if (openFrame)
openFrame.firstChild.focus();
setOpenFrame(null);
} else {
windows.removeChild(frame);
}
return;
}
if (screenElement.classList.contains('switch-app')) {
if (classList.contains('closing')) {
classList.remove('closing');
classList.add('closing-card');
if (openFrame) {
if (openFrame.classList.contains('opening-card')) {
openFrame.classList.remove('opening-card');
openFrame.classList.add('opening-switching');
} else {
// Skip the opening-card and opening-switching transition
// because the closing-card transition had already finished here.
if (openFrame.classList.contains('fullscreen-app')) {
screenElement.classList.add('fullscreen-app');
}
openFrame.classList.add('opening');
}
}
} else if (classList.contains('closing-card')) {
windowClosed(frame);
setTimeout(closeCallback);
closeCallback = null;
} else if (classList.contains('opening-switching')) {
// If the opening app need to be full screen, switch to full screen
if (classList.contains('fullscreen-app')) {
screenElement.classList.add('fullscreen-app');
}
classList.remove('opening-switching');
classList.add('opening');
} else if (classList.contains('opening')) {
windowOpened(frame);
setTimeout(openCallback);
openCallback = null;
setCloseFrame(null);
setOpenFrame(null);
screenElement.classList.remove('switch-app');
}
return;
}
if (classList.contains('opening')) {
windowOpened(frame);
setTimeout(openCallback);
openCallback = null;
setOpenFrame(null);
} else if (classList.contains('closing')) {
windowClosed(frame);
setTimeout(closeCallback);
closeCallback = null;
setCloseFrame(null);
}
});
// Executes when the opening transition scale the app
// to full size.
function windowOpened(frame) {
var iframe = frame.firstChild;
frame.classList.add('active');
windows.classList.add('active');
if ('wrapper' in frame.dataset) {
wrapperFooter.classList.add('visible');
}
// Take the focus away from the currently displayed app
var app = runningApps[displayedApp];
if (app && app.iframe)
app.iframe.blur();
// Give the focus to the frame
iframe.focus();
if (!TrustedUIManager.isVisible() && !isRunningFirstRunApp) {
// Set homescreen visibility to false
toggleHomescreen(false);
}
// Set displayedApp to the new value
displayedApp = iframe.dataset.frameOrigin;
// Set orientation for the new app
setOrientationForApp(displayedApp);
// Dispatch an 'appopen' event.
var manifestURL = runningApps[displayedApp].manifestURL;
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('appopen', true, false, {
manifestURL: manifestURL,
origin: displayedApp
});
frame.dispatchEvent(evt);
}
// Executes when app closing transition finishes.
function windowClosed(frame) {
var iframe = frame.firstChild;
// If the FTU is closing, make sure we save this state
if (iframe.src == ftuURL) {
isRunningFirstRunApp = false;
document.getElementById('screen').classList.remove('ftu');
window.asyncStorage.setItem('ftu.enabled', false);
// Done with FTU, letting everyone know
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('ftudone',
/* canBubble */ true, /* cancelable */ false, {});
window.dispatchEvent(evt);
}
frame.classList.remove('active');
windows.classList.remove('active');
// set the closed frame visibility to false
if ('setVisible' in iframe)
iframe.setVisible(false);
screenElement.classList.remove('fullscreen-app');
}
// The following things needs to happen when firstpaint happens.
// We centralize all that here but not all of them applies.
windows.addEventListener('mozbrowserfirstpaint', function firstpaint(evt) {
var iframe = evt.target;
var frame = iframe.parentNode;
// remove the unpainted flag
delete iframe.dataset.unpainted;
setTimeout(function firstpainted() {
// Save the screenshot
// Remove the background only until we actually got the screenshot,
// because the getScreenshot() call will be pushed back by
// painting/loading in the child process; when we got the screenshot,
// that means the app is mostly loaded.
// (as opposed to plain white firstpaint)
saveAppScreenshot(frame, function screenshotTaken() {
// Remove the default background
frame.classList.remove('default-background');
// Remove the screenshot from frame
clearFrameBackground(frame);
});
});
});
// setFrameBackground() will attach the screenshot background to
// the given frame.
// The callback could be sync or async (depend on whether we need
// the screenshot from database or not)
function setFrameBackground(frame, callback, transparent) {
var iframe = frame.firstChild;
// If the frame is painted, or there is already background image present
// start the transition right away.
if (!('unpainted' in iframe.dataset) ||
('bgObjectURL' in frame.dataset)) {
callback();
return;
}
// Get the screenshot from the database
getAppScreenshotFromDatabase(iframe.src || iframe.dataset.frameOrigin,
function(screenshot) {
// If firstpaint is faster than database, we will not transition
// with screenshot.
if (!('unpainted' in iframe.dataset)) {
callback();
return;
}
if (!screenshot) {
// put a default background
frame.classList.add('default-background');
callback();
return;
}
// set the screenshot as the background of the frame itself.
// we are safe to do so since there is nothing on it yet.
setFrameBackgroundBlob(frame, screenshot, transparent);
// start the transition
callback();
});
}
// On-disk database for window manager.
// It's only for app screenshots right now.
var database = null;
var DB_SCREENSHOT_OBJSTORE = 'screenshots';
(function openDatabase() {
var DB_VERSION = 2;
var DB_NAME = 'window_manager';
var req = window.indexedDB.open(DB_NAME, DB_VERSION);
req.onerror = function() {
console.error('Window Manager: opening database failed.');
};
req.onupgradeneeded = function databaseUpgradeneeded() {
database = req.result;
if (database.objectStoreNames.contains(DB_SCREENSHOT_OBJSTORE))
database.deleteObjectStore(DB_SCREENSHOT_OBJSTORE);
var store = database.createObjectStore(
DB_SCREENSHOT_OBJSTORE, { keyPath: 'url' });
};
req.onsuccess = function databaseSuccess() {
database = req.result;
};
})();
function putAppScreenshotToDatabase(url, data) {
if (!database)
return;
var txn = database.transaction(DB_SCREENSHOT_OBJSTORE, 'readwrite');
txn.onerror = function() {
console.warn(
'Window Manager: transaction error while trying to save screenshot.');
};
var store = txn.objectStore(DB_SCREENSHOT_OBJSTORE);
var req = store.put({
url: url,
screenshot: data
});
req.onerror = function(evt) {
console.warn(
'Window Manager: put error while trying to save screenshot.');
};
}
function getAppScreenshotFromDatabase(url, callback) {
if (!database) {
console.warn(
'Window Manager: Neither database nor app frame is ' +
'ready for getting screenshot.');
callback();
return;
}
var req = database.transaction(DB_SCREENSHOT_OBJSTORE)
.objectStore(DB_SCREENSHOT_OBJSTORE).get(url);
req.onsuccess = function() {
if (!req.result) {
console.log('Window Manager: No screenshot in database. ' +
'This is expected from a fresh installed app.');
callback();
return;
}
callback(req.result.screenshot, true);
}
req.onerror = function(evt) {
console.warn('Window Manager: get screenshot from database failed.');
callback();
};
}
function deleteAppScreenshotFromDatabase(url) {
var txn = database.transaction(DB_SCREENSHOT_OBJSTORE);
var store = txn.objectStore(DB_SCREENSHOT_OBJSTORE);
store.delete(url);
}
function getAppScreenshotFromFrame(frame, callback) {
if (!frame) {
callback();
return;
}
var iframe = frame.firstChild;
var req = iframe.getScreenshot(iframe.offsetWidth, iframe.offsetHeight);
req.onsuccess = function gotScreenshotFromFrame(evt) {
var result = evt.target.result;
callback(result, false);
};
req.onerror = function gotScreenshotFromFrameError(evt) {
console.warn('Window Manager: getScreenshot failed.');
callback();
};
}
// Meta method for get the screenshot from the app frame,
// and save it to database.
function saveAppScreenshot(frame, callback) {
getAppScreenshotFromFrame(frame, function gotScreenshot(screenshot) {
if (callback)
callback(screenshot);
if (!screenshot)
return;
var iframe = frame.firstChild;
putAppScreenshotToDatabase(iframe.src || iframe.dataset.frameOrigin,
screenshot);
});
}
// Perform an "open" animation for the app's iframe
function openWindow(origin, callback) {
var app = runningApps[origin];
setOpenFrame(app.frame);
openCallback = callback || function() {};
// set the size of the opening app
setAppSize(origin);
if (origin === homescreen) {
// We cannot apply background screenshot to home screen app since
// the screenshot is encoded in JPEG and the alpha channel is
// not perserved. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=801676#c33
// If that resolves,
// setFrameBackground(openFrame, gotBackground, true);
// will simply work here.
// Call the openCallback only once. We have to use tmp var as
// openCallback can be a method calling the callback
// (like the `removeFrame` callback in `kill()` ).
var tmpCallback = openCallback;
openCallback = null;
tmpCallback();
windows.classList.add('active');
openFrame.classList.add('homescreen');
openFrame.firstChild.focus();
setOpenFrame(null);
displayedApp = origin;
return;
}
if (requireFullscreen(origin))
screenElement.classList.add('fullscreen-app');
transitionOpenCallback = function startOpeningTransition() {
// We have been canceled by another transition.
if (!openFrame || transitionOpenCallback != startOpeningTransition)
return;
// Make sure we're not called twice.
transitionOpenCallback = null;
if (!screenElement.classList.contains('switch-app')) {
openFrame.classList.add('opening');
} else if (!openFrame.classList.contains('opening')) {
openFrame.classList.add('opening-card');
}
};
if ('unpainted' in openFrame.firstChild.dataset) {
waitForNextPaintOrBackground(openFrame, transitionOpenCallback);
} else {
waitForNextPaint(openFrame, transitionOpenCallback);
}
// Set the frame to be visible.
if ('setVisible' in openFrame.firstChild) {
if (!AttentionScreen.isFullyVisible()) {
openFrame.firstChild.setVisible(true);
} else {
// If attention screen is fully visible now,
// don't give the open frame visible.
// This is the case that homescreen is restarted behind attention screen
openFrame.firstChild.setVisible(false);
}
}
}
function waitForNextPaintOrBackground(frame, callback) {
var waiting = true;
function proceed() {
if (waiting) {
waiting = false;
callback();
}
}
waitForNextPaint(frame, proceed);
setFrameBackground(frame, proceed);
}
function waitForNextPaint(frame, callback) {
function onNextPaint() {
clearTimeout(timeout);
callback();
}
var iframe = frame.firstChild;
// Register a timeout in case we don't receive
// nextpaint in an acceptable time frame.
var timeout = setTimeout(function() {
if ('removeNextPaintListener' in iframe)
iframe.removeNextPaintListener(onNextPaint);
callback();
}, kTransitionTimeout);
if ('addNextPaintListener' in iframe)
iframe.addNextPaintListener(onNextPaint);
}
// Perform a "close" animation for the app's iframe
function closeWindow(origin, callback) {
var app = runningApps[origin];
setCloseFrame(app.frame);
closeCallback = callback || function() {};
// Animate the window close. Ensure the homescreen is in the
// foreground since it will be shown during the animation.
var homescreenFrame = ensureHomescreen();
// invoke openWindow to show homescreen here
openWindow(homescreen, null);
// Take keyboard focus away from the closing window
closeFrame.firstChild.blur();
// set orientation for homescreen app
setOrientationForApp(homescreen);
// Set the size of both homescreen app and the closing app
// since the orientation had changed.
setAppSize(homescreen);
setAppSize(origin);
// Send a synthentic 'appwillclose' event.
// The keyboard uses this and the appclose event to know when to close
// See https://github.com/andreasgal/gaia/issues/832
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('appwillclose', true, false, { origin: origin });
closeFrame.dispatchEvent(evt);
if ('wrapper' in closeFrame.dataset) {
wrapperHeader.classList.remove('visible');
wrapperFooter.classList.remove('visible');
}
transitionCloseCallback = function startClosingTransition() {
// We have been canceled by another transition.
if (!closeFrame || transitionCloseCallback != startClosingTransition)
return;
// Make sure we're not called twice.
transitionCloseCallback = null;
// Start the transition
closeFrame.classList.add('closing');
closeFrame.classList.remove('active');
};
waitForNextPaint(homescreenFrame, transitionCloseCallback);
}
// Perform a "switching" animation for the closing frame and the opening frame
function switchWindow(origin, callback) {
// This will trigger different transition to both openWindow()
// and closeWindow() transition.
screenElement.classList.add('switch-app');
// Ask closeWindow() to start closing the displayedApp
closeWindow(displayedApp, callback);
// Ask openWindow() to show a card on the right waiting to be opened
openWindow(origin);
}
// Ensure the homescreen is loaded and return its frame. Restarts
// the homescreen app if it was killed in the background.
// Note: this function would not invoke openWindow(homescreen),
// which should be handled in setDisplayedApp and in closeWindow()
function ensureHomescreen(reset) {
// If the url of the homescreen is not known at this point do nothing.
if (!homescreen || !homescreenManifestURL) {
return null;
}
if (!isRunning(homescreen)) {
var app = Applications.getByManifestURL(homescreenManifestURL);
appendFrame(null, homescreen, homescreenURL,
app.manifest.name, app.manifest, app.manifestURL);
runningApps[homescreen].iframe.dataset.start = Date.now();
setAppSize(homescreen);
} else if (reset) {
runningApps[homescreen].iframe.src = homescreenURL;
setAppSize(homescreen);
}
return runningApps[homescreen].frame;
}
function retrieveHomescreen(callback) {
var lock = navigator.mozSettings.createLock();
var setting = lock.get('homescreen.manifestURL');
setting.onsuccess = function() {
var app =
Applications.getByManifestURL(this.result['homescreen.manifestURL']);
// XXX This is a one-day workaround to not break everybody and make sure
// work can continue.
if (!app) {
var tmpURL = document.location.toString()
.replace('system', 'homescreen')
.replace('index.html', 'manifest.webapp');
app = Applications.getByManifestURL(tmpURL);
}
if (app) {
homescreenManifestURL = app.manifestURL;
homescreen = app.origin;
homescreenURL = app.origin + '/index.html#root';
callback(app);
}
}
}
function skipFTU() {
document.getElementById('screen').classList.remove('ftuStarting');
handleInitlogo();
setDisplayedApp(homescreen);
}
// Check if the FTU was executed or not, if not, get a
// reference to the app and launch it.
function retrieveFTU() {
window.asyncStorage.getItem('ftu.enabled', function getItem(launchFTU) {
document.getElementById('screen').classList.add('ftuStarting');
if (launchFTU === false) {
skipFTU();
return;
}
var lock = navigator.mozSettings.createLock();
var req = lock.get('ftu.manifestURL');
req.onsuccess = function() {
ftuManifestURL = this.result['ftu.manifestURL'];
if (!ftuManifestURL) {
dump('FTU manifest cannot be found skipping.\n');
skipFTU();
return;
}
ftu = Applications.getByManifestURL(ftuManifestURL);
if (!ftu) {
dump('Opps, bogus FTU manifest.\n');
skipFTU();
return;
}
ftuURL = ftu.origin + ftu.manifest.entry_points['ftu'].launch_path;
ftu.launch('ftu');
};
req.onerror = function() {
dump('Couldn\'t get the ftu manifestURL.\n');
skipFTU();
};
});
}
// Hide current app
function hideCurrentApp(callback) {
if (displayedApp == null || displayedApp == homescreen)
return;
toggleHomescreen(true);
var frame = getAppFrame(displayedApp);
frame.classList.add('back');
frame.classList.remove('restored');
if (callback) {
frame.addEventListener('transitionend', function execCallback() {
frame.style.visibility = 'hidden';
frame.removeEventListener('transitionend', execCallback);
callback();
});
}
}
// If app parameter is passed,
// it means there's a specific app needs to be restored
// instead of current app
function restoreCurrentApp(app) {
if (app) {
// Restore app visibility immediately but don't open it.
var frame = getAppFrame(app);
frame.style.visibility = 'visible';
frame.classList.remove('back');
} else {
app = displayedApp;
toggleHomescreen(false);
var frame = getAppFrame(app);
frame.style.visibility = 'visible';
frame.classList.remove('back');
frame.classList.add('restored');
frame.addEventListener('transitionend', function removeRestored() {
frame.removeEventListener('transitionend', removeRestored);
frame.classList.remove('restored');
});
}
}
function toggleHomescreen(visible) {
var homescreenFrame = ensureHomescreen();
if (homescreenFrame && 'setVisible' in homescreenFrame.firstChild)
homescreenFrame.firstChild.setVisible(visible);
}
// Switch to a different app
function setDisplayedApp(origin, callback) {
var currentApp = displayedApp, newApp = origin || homescreen;
var isFirstRunApplication = !currentApp && (origin == ftuURL);
var homescreenFrame = null;
if (!isFirstRunApplication) {
// Returns the frame reference of the home screen app.
// Restarts the homescreen app if it was killed in the background.
homescreenFrame = ensureHomescreen();
}
// Cancel transitions waiting to be started.
transitionOpenCallback = null;
transitionCloseCallback = null;
// Discard any existing activity
stopInlineActivity(true);
// Before starting a new transition, let's make sure current transitions
// are stopped and the state classes are cleaned up.
// visibility status should also be reset.
if (openFrame && 'setVisible' in openFrame.firstChild)
openFrame.firstChild.setVisible(false);
if (closeFrame && 'setVisible' in closeFrame.firstChild)
closeFrame.firstChild.setVisible(false);
if (!isFirstRunApplication && newApp == homescreen && !AttentionScreen.isFullyVisible()) {
toggleHomescreen(true);
}
setOpenFrame(null);
setCloseFrame(null);
screenElement.classList.remove('switch-app');
screenElement.classList.remove('fullscreen-app');
// Dispatch an appwillopen event only when we open an app
if (newApp != currentApp) {
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('appwillopen', true, true, { origin: newApp });
var app = runningApps[newApp];
// Allows listeners to cancel app opening and so stay on homescreen
if (!app.frame.dispatchEvent(evt)) {
if (typeof(callback) == 'function')
callback();
return;
}
var iframe = app.iframe;
// unpainted means that the app is cold booting
// if it is, we're going to listen for Browser API's loadend event
// which indicates that the iframe's document load is complete
//
// if the app is not cold booting (is in memory) we will listen
// to appopen event, which is fired when the transition to the
// app window is complete.
//
// [w] - warm boot (app is in memory, just transition to it)
// [c] - cold boot (app has to be booted, we show it's document load
// time)
var type;
if ('unpainted' in iframe.dataset) {
type = 'mozbrowserloadend';
} else {
iframe.dataset.start = Date.now();
type = 'appopen';
}
app.frame.addEventListener(type, function apploaded(e) {
e.target.removeEventListener(e.type, apploaded);
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('apploadtime', true, false, {
time: parseInt(Date.now() - iframe.dataset.start),
type: (e.type == 'appopen') ? 'w' : 'c'
});
iframe.dispatchEvent(evt);
});
}
// Case 1: the app is already displayed
if (currentApp && currentApp == newApp) {
if (newApp == homescreen) {
// relaunch homescreen
openWindow(homescreen, callback);
} else if (callback) {
// Just run the callback right away if it is not homescreen
callback();
}
}
// Case 2: null --> app
else if (isFirstRunApplication) {
isRunningFirstRunApp = true;
openWindow(newApp, function windowOpened() {
handleInitlogo(function() {
var mainScreen = document.getElementById('screen');
mainScreen.classList.add('ftu');
mainScreen.classList.remove('ftuStarting');
});
});
}
// Case 3: null->homescreen || homescreen->app
else if ((!currentApp && newApp == homescreen) ||
(currentApp == homescreen && newApp)) {
openWindow(newApp, callback);
}
// Case 4: app->homescreen
else if (currentApp && currentApp != homescreen && newApp == homescreen) {
// For screenshot to catch current window size
closeWindow(currentApp, callback);
}
// Case 5: app-to-app transition
else {
switchWindow(newApp, callback);
}
// Set homescreen as active,
// to control the z-index between homescreen & keyboard iframe
if ((newApp == homescreen) && homescreenFrame) {
homescreenFrame.classList.add('active');
} else {
homescreenFrame.classList.remove('active');
}
// Record the time when app was launched,
// need this to display apps in proper order on CardsView.
// We would also need this to determined the freshness of the frame
// for making screenshots.
if (newApp)
runningApps[newApp].launchTime = Date.now();
// If the app has a attention screen open, displaying it
AttentionScreen.showForOrigin(newApp);
}
function setOrientationForApp(origin) {
if (origin == null) { // No app is currently running.
screen.mozLockOrientation('portrait-primary');
return;
}
var app = runningApps[origin];
if (!app)
return;
var manifest = app.manifest;
if (manifest.orientation) {
var rv = screen.mozLockOrientation(manifest.orientation);
if (rv === false) {
console.warn('screen.mozLockOrientation() returned false for',
origin, 'orientation', manifest.orientation);
}
}
else { // If no orientation was requested, then let it rotate
screen.mozUnlockOrientation();
}
}
var isOutOfProcessDisabled = false;
SettingsListener.observe('debug.oop.disabled', false, function(value) {
isOutOfProcessDisabled = value;
});
function createFrame(origFrame, origin, url, name, manifest, manifestURL) {
var iframe = origFrame || document.createElement('iframe');
iframe.setAttribute('mozallowfullscreen', 'true');
var frame = document.createElement('div');
frame.appendChild(iframe);
frame.className = 'appWindow';
iframe.dataset.frameOrigin = origin;
// Save original frame URL in order to restore it on frame load error
iframe.dataset.frameURL = url;
// Note that we don't set the frame size here. That will happen
// when we display the app in setDisplayedApp()
// frames are began unpainted.
iframe.dataset.unpainted = true;
if (!manifestURL) {
frame.setAttribute('data-wrapper', 'true');
return frame;
}
// Most apps currently need to be hosted in a special 'mozbrowser' iframe.
// They also need to be marked as 'mozapp' to be recognized as apps by the
// platform.
iframe.setAttribute('mozbrowser', 'true');
// These apps currently have bugs preventing them from being
// run out of process. All other apps will be run OOP.
//
var outOfProcessBlackList = [
'Browser'
// Requires nested content processes (bug 761935). This is not
// on the schedule for v1.
];
if (!isOutOfProcessDisabled &&
outOfProcessBlackList.indexOf(name) === -1) {
// FIXME: content shouldn't control this directly
iframe.setAttribute('remote', 'true');
}
iframe.setAttribute('mozapp', manifestURL);
iframe.src = url;
return frame;
}
function appendFrame(origFrame, origin, url, name, manifest, manifestURL) {
// Create the <iframe mozbrowser mozapp> that hosts the app
var frame =
createFrame(origFrame, origin, url, name, manifest, manifestURL);
var iframe = frame.firstChild;
frame.id = 'appframe' + nextAppId++;
iframe.dataset.frameType = 'window';
// Give a name to the frame for differentiating between main frame and
// inline frame. With the name we can get frames of the same app using the
// window.open method.
iframe.name = 'main';
// If this frame corresponds to the homescreen, set mozapptype=homescreen
// so we're less likely to kill this frame's process when we're running low
// on memory.
//
// We must do this before we the appendChild() call below. Once
// we add this frame to the document, we can't change its app type.
if (origin === homescreen) {
iframe.setAttribute('mozapptype', 'homescreen');
}
// Add the iframe to the document
windows.appendChild(frame);
// And map the app origin to the info we need for the app
var app = new AppWindow({
origin: origin,
name: name,
manifest: manifest,
manifestURL: manifestURL,
frame: frame,
iframe: iframe,
launchTime: 0
});
runningApps[origin] = app;
if (requireFullscreen(origin)) {
frame.classList.add('fullscreen-app');
}
if (origin === ftuURL) {
// Add a way to identify ftu app
// (Used by SimLock)
frame.classList.add('ftu');
}
// A frame should start with visible false
if ('setVisible' in iframe)
iframe.setVisible(false);
numRunningApps++;
return app;
}
function startInlineActivity(origin, url, name, manifest, manifestURL) {
// Create the <iframe mozbrowser mozapp> that hosts the app
var frame = createFrame(null, origin, url, name, manifest, manifestURL);
var iframe = frame.firstChild;
frame.classList.add('inlineActivity');
iframe.dataset.frameType = 'inline-activity';
// Give a name to the frame for differentiating between main frame and
// inline frame. With the name we can get frames of the same app using the
// window.open method.
iframe.name = 'inline';
// Save the reference
inlineActivityFrames.push(frame);
// Set the size
setInlineActivityFrameSize();
// Add the iframe to the document
windows.appendChild(frame);
// Open the frame, first, store the reference
openFrame = frame;
// set the frame to visible state
if ('setVisible' in iframe)
iframe.setVisible(true);
setFrameBackground(openFrame, function gotBackground() {
// Start the transition when this async/sync callback is called.
openFrame.classList.add('active');
if (inlineActivityFrames.length == 1)
activityCallerOrigin = displayedApp;
if ('wrapper' in runningApps[displayedApp].frame.dataset) {
wrapperFooter.classList.remove('visible');
wrapperHeader.classList.remove('visible');
}
});
}
function removeFrame(origin) {
var app = runningApps[origin];
var frame = app.frame;
if (frame) {
windows.removeChild(frame);
clearFrameBackground(frame);
}
if (openFrame == frame) {
setOpenFrame(null);
setTimeout(openCallback);
openCallback = null;
}
if (closeFrame == frame) {
setCloseFrame(null);
setTimeout(closeCallback);
closeCallback = null;
}
delete runningApps[origin];
numRunningApps--;
}
function removeInlineFrame(frame) {
// If frame is transitioning we should remove the reference
if (openFrame == frame)
setOpenFrame(null);
// If frame is never set visible, we can remove the frame directly
// without closing transition
if (!frame.classList.contains('active')) {
windows.removeChild(frame);
return;
}
// Take keyboard focus away from the closing window
frame.firstChild.blur();
// Remove the active class and start the closing transition
frame.classList.remove('active');
}
// If all is not specified,
// remove the top most frame
function stopInlineActivity(all) {
if (!inlineActivityFrames.length)
return;
if (!all) {
var frame = inlineActivityFrames.pop();
removeInlineFrame(frame);
} else {
// stop all activity frames
// Remore the inlineActivityFrame reference
for (var frame of inlineActivityFrames) {
removeInlineFrame(frame);
}
inlineActivityFrames = [];
}
if (!inlineActivityFrames.length) {
// Give back focus to the displayed app
var app = runningApps[displayedApp];
if (app && app.iframe) {
app.iframe.focus();
if ('wrapper' in app.frame.dataset) {
wrapperFooter.classList.add('visible');
}
}
screenElement.classList.remove('inline-activity');
}
}
// Watch activity completion here instead of activity.js
// Because we know when and who to re-launch when activity ends.
window.addEventListener('mozChromeEvent', function(e) {
if (e.detail.type == 'activity-done') {
// Remove the top most frame every time we get an 'activity-done' event.
stopInlineActivity();
if (!inlineActivityFrames.length) {
setDisplayedApp(activityCallerOrigin);
activityCallerOrigin = '';
}
}
});
// There are two types of mozChromeEvent we need to handle
// in order to launch the app for Gecko
window.addEventListener('mozChromeEvent', function(e) {
var startTime = Date.now();
var manifestURL = e.detail.manifestURL;
if (!manifestURL)
return;
var app = Applications.getByManifestURL(manifestURL);
if (!app)
return;
var manifest = app.manifest;
var name = new ManifestHelper(manifest).name;
var origin = app.origin;
// Check if it's a virtual app from a entry point.
// If so, change the app name and origin to the
// entry point.
var entryPoints = manifest.entry_points;
if (entryPoints && manifest.type == 'certified') {
var givenPath = e.detail.url.substr(origin.length);
// Workaround here until the bug (to be filed) is fixed
// Basicly, gecko is sending the URL without launch_path sometimes
for (var ep in entryPoints) {
var currentEp = entryPoints[ep];
var path = givenPath;
if (path.indexOf('?') != -1) {
path = path.substr(0, path.indexOf('?'));
}
//Remove the origin and / to find if if the url is the entry point
if (path.indexOf('/' + ep) == 0 &&
(currentEp.launch_path == path)) {
origin = origin + currentEp.launch_path;
name = new ManifestHelper(currentEp).name;
}
}
}
switch (e.detail.type) {
// mozApps API is asking us to launch the app
// We will launch it in foreground
case 'webapps-launch':
if (origin == homescreen) {
// No need to append a frame if is homescreen
setDisplayedApp();
} else {
if (!isRunning(origin)) {
appendFrame(null, origin, e.detail.url,
name, app.manifest, app.manifestURL);
}
runningApps[origin].iframe.dataset.start = startTime;
setDisplayedApp(origin, null, 'window');
}
break;
// System Message Handler API is asking us to open the specific URL
// that handles the pending system message.
// We will launch it in background if it's not handling an activity.
case 'open-app':
// If the system message goes to System app,
// we should not be launching that in a frame.
if (e.detail.url === window.location.href)
return;
if (e.detail.isActivity && e.detail.target.disposition &&
e.detail.target.disposition == 'inline') {
// Inline activities behaves more like a dialog,
// let's deal them here.
startInlineActivity(origin, e.detail.url,
name, manifest, app.manifestURL);
return;
}
if (isRunning(origin)) {
// If the app is in foreground, it's too risky to change it's
// URL. We'll ignore this request.
if (displayedApp !== origin) {
var iframe = getAppFrame(origin).firstChild;
// If the app is opened and it is loaded to the correct page,
// then there is nothing to do.
if (iframe.src !== e.detail.url) {
// Rewrite the URL of the app frame to the requested URL.
// XXX: We could ended opening URls not for the app frame
// in the app frame. But we don't care.
iframe.src = e.detail.url;
}
}
} else if (origin !== homescreen) {
// XXX: We could ended opening URls not for the app frame
// in the app frame. But we don't care.
appendFrame(null, origin, e.detail.url,
name, manifest, app.manifestURL);
// set the size of the iframe
// so Cards View will get a correct screenshot of the frame
if (!e.detail.isActivity)
setAppSize(origin, false);
} else {
ensureHomescreen();
}
// We will only bring web activity handling apps to the foreground
if (!e.detail.isActivity)
return;
// XXX: the correct way would be for UtilityTray to close itself
// when there is a appwillopen/appopen event.
UtilityTray.hide();
setDisplayedApp(origin);
break;
}
});
// If the application tried to close themselves by calling window.close()
// we will handle that here.
// XXX: this event is fired twice:
// https://bugzilla.mozilla.org/show_bug.cgi?id=814583
window.addEventListener('mozbrowserclose', function(e) {
if (!'frameType' in e.target.dataset)
return;
switch (e.target.dataset.frameType) {
case 'window':
kill(e.target.dataset.frameOrigin);
break;
case 'inline-activity':
stopInlineActivity(true);
break;
}
});
// Deal with locationchange
window.addEventListener('mozbrowserlocationchange', function(e) {
if (!'frameType' in e.target.dataset)
return;
e.target.dataset.url = e.detail;
});
// Deal with application uninstall event
// if the application is being uninstalled, we ensure it stop running here.
window.addEventListener('applicationuninstall', function(e) {
kill(e.detail.application.origin);
deleteAppScreenshotFromDatabase(e.detail.application.origin);
});
// When an UI layer is overlapping the current app,
// WindowManager should set the visibility of app iframe to false
// And reset to true when the layer is gone.
// We may need to handle windowclosing, windowopened in the future.
var attentionScreenTimer = null;
var overlayEvents = [
'lock',
'will-unlock',
'attentionscreenshow',
'attentionscreenhide',
'status-active',
'status-inactive'
];
function overlayEventHandler(evt) {
if (attentionScreenTimer)
clearTimeout(attentionScreenTimer);
switch (evt.type) {
case 'status-active':
case 'attentionscreenhide':
case 'will-unlock':
if (LockScreen.locked)
return;
if (inlineActivityFrames.length) {
setVisibilityForInlineActivity(true);
} else {
setVisibilityForCurrentApp(true);
}
break;
case 'lock':
setVisibilityForCurrentApp(false);
break;
/*
* Because in-transition is needed in attention screen,
* We set a timer here to deal with visibility change
*/
case 'status-inactive':
if (!AttentionScreen.isVisible())
return;
case 'attentionscreenshow':
if (evt.detail && evt.detail.origin &&
evt.detail.origin != displayedApp) {
attentionScreenTimer = setTimeout(function setVisibility() {
if (inlineActivityFrames.length) {
setVisibilityForInlineActivity(false);
} else {
setVisibilityForCurrentApp(false);
}
}, 3000);
// Immediatly blur the frame in order to ensure hiding the keyboard
var app = runningApps[displayedApp];
if (app)
app.iframe.blur();
}
break;
}
}
overlayEvents.forEach(function overlayEventIterator(event) {
window.addEventListener(event, overlayEventHandler);
});
function setVisibilityForInlineActivity(visible) {
if (!inlineActivityFrames.length)
return;
var topFrame = inlineActivityFrames[inlineActivityFrames.length - 1].firstChild;
if ('setVisible' in topFrame) {
topFrame.setVisible(visible);
}
// Restore/give away focus on visiblity change
// so that the app can take back its focus
if (visible) {
topFrame.focus();
} else {
topFrame.blur();
}
}
function setVisibilityForCurrentApp(visible) {
var app = runningApps[displayedApp];
if (!app)
return;
if ('setVisible' in app.iframe)
app.iframe.setVisible(visible);
// Restore/give away focus on visiblity change
// so that the app can take back its focus
if (visible)
app.iframe.focus();
else
app.iframe.blur();
}
function handleAppCrash(origin, manifestURL) {
if (origin && manifestURL) {
// When inline activity frame crashes,
// query the localized name from manifest
var app = Applications.getByManifestURL(manifestURL);
CrashReporter.setAppName(getAppName(origin, app.manifest));
} else {
var app = runningApps[displayedApp];
CrashReporter.setAppName(app.name);
}
}
function getAppName(origin, manifest) {
if (!manifest)
return '';
if (manifest.entry_points && manifest.type == 'certified') {
var entryPoint = manifest.entry_points[origin.split('/')[3]];
return new ManifestHelper(entryPoint).name;
}
return new ManifestHelper(manifest).name;
}
// Deal with crashed apps
window.addEventListener('mozbrowsererror', function(e) {
if (!'frameType' in e.target.dataset)
return;
var origin = e.target.dataset.frameOrigin;
var manifestURL = e.target.getAttribute('mozapp');
if (e.target.dataset.frameType == 'inline-activity') {
stopInlineActivity(true);
handleAppCrash(origin, manifestURL);
return;
}
if (e.target.dataset.frameType !== 'window')
return;
/*
detail.type = error (Server Not Found case)
is handled in Modal Dialog
*/
if (e.detail.type !== 'fatal')
return;
// If the crashing app is currently displayed, we will present
// the user with a banner notification.
if (displayedApp == origin)
handleAppCrash();
// If the crashing app is the home screen app and it is the displaying app
// we will need to relaunch it right away.
// Alternatively, if home screen is not the displaying app,
// we will not relaunch it until the foreground app is closed.
// (to be dealt in setDisplayedApp(), not here)
if (displayedApp == homescreen) {
kill(origin, function relaunchHomescreen() {
setDisplayedApp(homescreen);
});
return;
}
// Actually remove the frame, and trigger the closing transition
// if the app is currently displaying
kill(origin);
});
function hasPermission(app, permission) {
var mozPerms = navigator.mozPermissionSettings;
if (!mozPerms)
return false;
var value = mozPerms.get(permission, app.manifestURL, app.origin, false);
return (value === 'allow');
}
// Use a setting in order to be "called" by settings app
navigator.mozSettings.addObserver(
'clear.remote-windows.data',
function clearRemoteWindowsData(setting) {
var shouldClear = setting.settingValue;
if (!shouldClear)
return;
// Delete all storage and cookies from our content processes
var request = navigator.mozApps.getSelf();
request.onsuccess = function() {
request.result.clearBrowserData();
};
// Reset the setting value to false
var lock = navigator.mozSettings.createLock();
lock.set({'clear.remote-windows.data': false});
});
// Watch for window.open usages in order to open wrapper frames
window.addEventListener('mozbrowseropenwindow', function handleWrapper(evt) {
var detail = evt.detail;
var features;
try {
features = JSON.parse(detail.features);
} catch (e) {
features = {};
}
// Handles only call to window.open with `{remote: true}` feature.
if (!features.remote)
return;
// XXX bug 819882: for now, only allows homescreen to open oop windows
var callerIframe = evt.target;
var callerFrame = callerIframe.parentNode;
var manifestURL = callerIframe.getAttribute('mozapp');
var callerApp = Applications.getByManifestURL(manifestURL);
if (!callerApp || !callerFrame.classList.contains('homescreen'))
return;
var callerOrigin = callerApp.origin;
// So, we are going to open a remote window.
// Now, avoid PopupManager listener to be fired.
evt.stopImmediatePropagation();
var name = detail.name;
var url = detail.url;
// Use fake origin for named windows in order to be able to reuse them,
// otherwise always open a new window for '_blank'.
var origin = null;
var app = null;
if (name == '_blank') {
origin = url;
// Just bring on top if a wrapper window is already running with this url
if (origin in runningApps &&
runningApps[origin].windowName == '_blank') {
setDisplayedApp(origin);
return;
}
} else {
origin = 'window:' + name + ',source:' + callerOrigin;
var runningApp = runningApps[origin];
if (runningApp && runningApp.windowName === name) {
if (runningApp.iframe.src === url) {
// If the url is already loaded, just display the app
setDisplayedApp(origin);
return;
} else {
// Wrapper context shouldn't be shared between two apps -> killing
kill(origin);
}
}
}
var title = '', icon = '', remote = false, useAsyncPanZoom = false;
var originName, originURL, searchName, searchURL;
try {
var features = JSON.parse(detail.features);
var regExp = new RegExp(' ', 'g');
title = features.name.replace(regExp, ' ') || url;
icon = features.icon || '';
if (features.origin) {
originName = features.origin.name.replace(regExp, ' ');
originURL = decodeURIComponent(features.origin.url);
}
if (features.search) {
searchName = features.search.name.replace(regExp, ' ');
searchURL = decodeURIComponent(features.search.url);
}
if (features.useAsyncPanZoom)
useAsyncPanZoom = true;
} catch (ex) { }
// If we don't reuse an existing app, open a brand new one
var iframe;
if (!app) {
// Bug 807438: Move new window document OOP
// Ignore `event.detail.frameElement` for now in order
// to create a remote system app frame.
// So that new window documents are going to share
// system app content processes data jar.
iframe = document.createElement('iframe');
iframe.setAttribute('mozbrowser', 'true');
iframe.setAttribute('remote', 'true');
iframe.addEventListener('mozbrowserloadstart', function start() {
iframe.dataset.loading = true;
wrapperHeader.classList.add('visible');
});
iframe.addEventListener('mozbrowserloadend', function end() {
delete iframe.dataset.loading;
wrapperHeader.classList.remove('visible');
});
// `mozasyncpanzoom` only works when added before attaching the iframe
// node to the document.
if (useAsyncPanZoom) {
iframe.dataset.useAsyncPanZoom = true;
iframe.setAttribute('mozasyncpanzoom', 'true');
}
var app = appendFrame(iframe, origin, url, title, {
'name': title
}, null);
// Set the window name in order to reuse this app if we try to open
// a new window with same name
app.windowName = name;
} else {
iframe = app.iframe;
// Update app name for the card view
app.manifest.name = title;
}
iframe.dataset.name = title;
iframe.dataset.icon = icon;
if (originName)
iframe.dataset.originName = originName;
if (originURL)
iframe.dataset.originURL = originURL;
if (searchName)
iframe.dataset.searchName = searchName;
if (searchURL)
iframe.dataset.searchURL = searchURL;
// First load blank page in order to hide previous website
iframe.src = url;
setDisplayedApp(origin);
}, true); // Use capture in order to catch the event before PopupManager does
// Stop running the app with the specified origin
function kill(origin, callback) {
if (!isRunning(origin))
return;
// As we can't immediatly remove runningApps entry,
// we flag it as being killed in order to avoid trying to remove it twice.
// (Check required because of bug 814583)
if (runningApps[origin].killed)
return;
runningApps[origin].killed = true;
// If the app is the currently displayed app, switch to the homescreen
if (origin === displayedApp) {
// when the homescreen is displayed and being
// killed we need to forcibly restart it...
if (origin === homescreen) {
removeFrame(origin);
// XXX workaround bug 810431.
// we need this here and not in other situations
// as it is expected that homescreen frame is available.
setTimeout(function() {
setDisplayedApp();
if (callback) {
callback();
}
});
} else {
setDisplayedApp(homescreen, function() {
removeFrame(origin);
if (callback)
setTimeout(callback);
});
}
} else {
removeFrame(origin);
}
// Send a synthentic 'appterminated' event.
// Let other system app module know an app is
// being killed, removed or crashed.
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent('appterminated', true, false, { origin: origin });
window.dispatchEvent(evt);
}
// Reload the frame of the running app
function reload(origin) {
if (!isRunning(origin))
return;
var app = runningApps[origin];
app.reload();
}
// When a resize event occurs, resize the running app, if there is one
// When the status bar is active it doubles in height so we need a resize
var appResizeEvents = ['resize', 'status-active', 'status-inactive',
'keyboardchange', 'keyboardhide',
'attentionscreenhide'];
appResizeEvents.forEach(function eventIterator(event) {
window.addEventListener(event, function on(evt) {
if (event == 'keyboardchange') {
// Cancel fullscreen if keyboard pops
if (document.mozFullScreen)
document.mozCancelFullScreen();
setAppHeight(evt.detail.height);
} else if (displayedApp) {
setAppSize(displayedApp);
}
});
});
window.addEventListener('home', function(e) {
// If the lockscreen is active, it will stop propagation on this event
// and we'll never see it here. Similarly, other overlays may use this
// event to hide themselves and may prevent the event from getting here.
// Note that for this to work, the lockscreen and other overlays must
// be included in index.html before this one, so they can register their
// event handlers before we do.
// If we are currently transitioning, the user would like to cancel
// it instead of toggling homescreen panels.
var inTransition = !!(openFrame || closeFrame);
if (document.mozFullScreen) {
document.mozCancelFullScreen();
}
if (displayedApp !== homescreen || inTransition) {
if (displayedApp != ftuURL) {
setDisplayedApp(homescreen);
} else {
e.preventDefault();
}
} else {
stopInlineActivity(true);
ensureHomescreen(true);
}
});
// Cancel dragstart event to workaround
// https://bugzilla.mozilla.org/show_bug.cgi?id=783076
// which stops OOP home screen pannable with left mouse button on
// B2G/Desktop.
windows.addEventListener('dragstart', function(evt) {
evt.preventDefault();
}, true);
// With all important event handlers in place, we can now notify
// Gecko that we're ready for certain system services to send us
// messages (e.g. the radio).
// Note that shell.js starts listen for the mozContentEvent event at
// mozbrowserloadstart, which sometimes does not happen till window.onload.
window.addEventListener('load', function wm_loaded() {
window.removeEventListener('load', wm_loaded);
var evt = new CustomEvent('mozContentEvent',
{ bubbles: true, cancelable: false,
detail: { type: 'system-message-listener-ready' } });
window.dispatchEvent(evt);
});
// This is code copied from
// http://dl.dropbox.com/u/8727858/physical-events/index.html
// It appears to workaround the Nexus S bug where we're not
// getting orientation data. See:
// https://bugzilla.mozilla.org/show_bug.cgi?id=753245
// It seems it needs to be in both window_manager.js and bootstrap.js.
function dumbListener2(event) {}
window.addEventListener('devicemotion', dumbListener2);
window.setTimeout(function() {
window.removeEventListener('devicemotion', dumbListener2);
}, 2000);
// Return the object that holds the public API
return {
isFtuRunning: function() {
return isRunningFirstRunApp;
},
launch: launch,
kill: kill,
reload: reload,
getDisplayedApp: getDisplayedApp,
setOrientationForApp: setOrientationForApp,
getAppFrame: getAppFrame,
getRunningApps: function() {
return runningApps;
},
setDisplayedApp: setDisplayedApp,
getCurrentDisplayedApp: function() {
return runningApps[displayedApp];
},
hideCurrentApp: hideCurrentApp,
restoreCurrentApp: restoreCurrentApp,
retrieveHomescreen: retrieveHomescreen,
retrieveFTU: retrieveFTU
};
}());
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