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Procedure definitions have the option for horizontal/vertical
orientation of parameters. However, switching resulted in the inputs
disappearing from the block. This was caused by the new fields not
being initialized correctly such that when the block attempted to
redraw, expected SVG elements were undefined.

This commit fixes the updateParams_ method for procedure blocks so
that they will correctly handle switching between the two cases.

Change-Id: Ib9a161548954a2990a0351ad07a808c35d2bc928

Creating new procedures that return values in the blocks editor could
result in multiple procedures having the same name. This commit
updates the procedures_defreturn initialization to match that of
procedures_defnoreturn so that renaming is correctly applied.

Change-Id: Ifc30ee27d538b46a61a17d0d4677dad31c4d7d4d

Backpack menu items in the workspace, i.e. Copy All to Backpack and
Paste All From Backpack were broken during the transition to the
latest Blockly. This commit changes any checks for the backpack
presence to use the hasBackpack() test added to WorkspaceSvg.

Change-Id: Iae7919d173f5a5f75003c0132d1f116af9839bd0

Change-Id: I467a9c61a243dc38cd9b311016cf12893b300b66

This commit restores the ability to change the orientation of the
parameters in an event handler block. The functionality is updated to
reflect the new events mechanism in Blockly.

Change-Id: Ib6d9c27b6e13838af886c0abf281e24ba57e6bbe

A change in Chrome results in different behavior when focusing an
invisible element. When the list is longer than the panel, this
results in the panel scrolling-to-top. The fix applied is adapted from
[this issue](https://github.com/gwtproject/gwt/issues/9475#issuecomment-277777989)
on the GWT Github repository.

Change-Id: I8634a95077ee166f34aa265e81a7f272cbd620de

When switching between languages, or loading an AIA created in one
language but the user's language is different, the translation of
event parameters would not always hold. This is due to the use of
`eventparam` as a mutation on the lexical getter and setter
blocks. Through certain actions, the `eventparam` cached value could
be reset to an incorrect state.

This commit does two things to address this issue: (1) adds an
`updateMutation()` method that can be used to recompute the value of
`eventparam` after a blocks update, including changing the dropdown or
attaching a new parent. This keeps the `eventparam` up-to-date during
normal operation (previously it was only computed on save). (2)
FieldParameterFlydown caches the untranslated `eventparam` value for
instantiating new blocks within the workspace. Previously they were
created with the value `null`, which has special meaning as a cached
'not an event' value. Now they are created with the correct mutation
at the beginning and with (1) should maintain the correct value.

Change-Id: I758b8d414d7ddf98f7375ee961187b06b47939cf

This commit brings the App Inventor blocks editor current to the
Google's Blockly. As part of the update, some additional
organizational changes were made to the code:

1. Remove old blockly in lib/ and replaces it with a git submodule
2. Remove old closure-library in lib/ and replaces it with a git
   submodule
3. Move AI2-specific Blockly changes out of core where possible

Change-Id: I58993db05631266d95fbbcc68d49aad1e562fc22

Change-Id: I755616e4c18d77011baaa96dbe852939ee643681

Change-Id: Ie93e0f8f0e738c9f8e4842d5db18d2123119bf6e

maintain backward compatibility for current urls that expect http:// by default

Change-Id: I9c62004bf6b38e06094ebad30f3cd9b789de6510

Change-Id: Icb2747a43848dee97b38b02dfa9cf86bf72ff228

App Engine requires that we now include the companions download
directory in the <static-files> section of appengine-web.xml.

Change-Id: I13c03f0f4625f79ea42a902ab23aaed6adf45569

After the recent App Inventor 2 update, the backpack is now persistent,
which means that when right-clicking on the backpack icon on the block
editor and clicking "Show Backpack documentation", some of the text in
the dialog is incorrect. I have corrected the text to show that of the
release notes.

Change-Id: I223be859193a2b02be8bcf673bdebd6f7116444d

Josh ran into a NullPointerException when receiving a SMS message
using a Pixel running Google Fi. There are a few possible reasons this
could happen:

1. We linked against android.telephony.gms.SmsMessage. If the message
   was formatted as CDMA (3gpp2) then it is possible that the message
   returned is null, resulting in the NPE.

2. Any format other than 3gpp or 3gpp2 will result in the same flow as
   1 if a new format is introduced in the future, or if the format
   were something such as a data packet from Google Voice.

In API 19, there was a new
android.provider.Telephony.Sms.Intents#getMessagesFromIntent
introduced to abstract away extracting SmsMessages from Intents. This
commit uses this API when the SDK is 19 or higher. We also catch NPE
in the broadcast receiver and log it to Logcat to prevent crashing.

Change-Id: I9f00d6156f004d3d72938de1e57b31cfb034d241

We store the backpack in a new “user file” named backpack.xml (the other
user file supported is “android.keystore” for the user’s signing
key). As an optimization we remove the backpack.xml file if we store
“[]” in it (the empty backpack represented as an empty JSON string).

Change-Id: I16fb747f31e59d30535f690c1b35c80bde53629f

When an obfuscated text is used in an application with memory
pressure, the iteration over the obfuscated string can cause a
NullPointerException to be thrown from gnu.text.CharMap. The CharMap
uses weak references to Char objects to make Chars eq?. However, Kawa
does not check whether the Char returned from the WeakReference.get()
method is null and then attempts to take its intValue(). In
applications where there is little memory pressure the WeakReferences
are unlikely to be GCed so we don't normally observe this erroroneous
behavior.

This commit updates kawa-1.11-modified.jar with a check whether the
Char returned by the WeakReference is null prior to taking the
intValue(). If the Char is null, it will fall through to recreate the
Char and add it to the CharMap.

Change-Id: Idb19540b6096a9609a8aa06e77d628cd3ce1dc6b

Limit the number of calls to MockForm.refresh(). This lets a project
with a lot of designer objects load when otherwise the exponential time
and space consumption of repeated and nested calls to refresh() would
cause it to fail to load.

This implementation throttles the calls “locally.” The idea is to limit
the number of calls to 1 every 2 seconds. An alternative implementation
would be to set a flag while a project is loading (which is when this is
a problem) and inhibit all calls to refresh while this flag is set. Then
when the project is no longer loading, clear the flag and do one final
call to refresh. However this would be tricky because loading is
asynchronous and knowing when it is completely finished is
complicated. Such an implementation would be spread over several
modules, and add complexity to the codebase. This change is simpler
because it is limited to one module.

We also add a logging call Ode.CLog to Ode that logs to the developer
console instead of the OdeLog module which logs to the special debug
tab. There are situations where logging to the console is desirable,
like when the problem you are attempting to debug leaves App Inventor
locked up so you cannot see the debug tab!

Change-Id: I5fb9c832704e87c6e73903dc3a75ceb79df5f7f3

On phones with smaller memory footprints, the use of InputStream.mark
was causing an IOException to be thrown that resulted in images not
loading. This patch loads the entirety of the image into a byte[] and
then uses that in conjunction with a ByteArrayInputStream to pass the
image around to the multiple interfaces that need it without reloading
the content. This fixes the failure to load many images in the
emulator.

Change-Id: If7185e8e1a02e19a46037a4dd4df545241fa7f2b

Do not use a transaction when running in the dev server as this causes a
multi-entity group error. This happens because the dev server simulates
the Google Cloud Store using the datastore. If we use a transaction in
create project it winds up covering multiple entity groups. One for our
modifications to the “FileData” kind and a second for the simulated GCS
bucket kind.

Change-Id: I4a31eb16c7866e4ed721c02dbc77addea8df3dbf

Remove the check in versioning.js that throws an exception if a
component version is newer then the system version. This exception
guaranteed that a project touched by a newer version of App Inventor
would not work in the current version.

With this change the project may work if the newer version made not
incompatible changes. The user is shown a warning dialog stating that
the project might not work.

Change-Id: I72c15383b20d918ffd0077d6f7a10f8d1dd4b345

Change-Id: I323066420ea9e0dd9472829e3ee2a1d750d4ba5f

Refactoring to reduce the number of unique dialog boxes instantiated by
Ode. We add this generic MessageDialog method and use it for the
Firebase experimental warning, eliminating the ode.warningDialog
method. Future refactoring can remove more unique dialogs.

Change-Id: I77e1df2a359424aac38c6e8ae8b04fec292cbe99

This reverts most of commit b5e78d70.
We keep the changes to MediaUtil.getBitmapDrawable. So the actual image
fetching happens on a non-UI thread, but the UI Thread blocks until the
network I/O is done. This is non-ideal, as blocking on the UI thread can
result in an Application Not Responding (ANR) error. However this might
be more desirable then having the application apparently not load a
background image for a long time, and then having it suddenly appear
when the background network loading is finally finished.

Change-Id: I3424918a83284d19ee6ccfc9deb8824f5c0605a2

When the minSdkVersion is >= 10 and the user attempts to set an image
to a non-file URL, the Android runtime will throw an
android.os.NetworkOnMainThreadException. This commit changes the
behavior of MediaUtil.getBitmapDrawable to an asynchronous design that
takes a callback that will be triggered after the bitmap has been
loaded. If an exception occurs, an onException callback will be
used. Other failures are reported via the onFailure callback. Due to
the change to AsyncCallbackPair, this change also affects a number of
other components that may or may not have been performing network
access on the main thread.

Testing of this change should focus on the following components:
 * ButtonBase and its descendants
 * Canvas
 * Form
 * GameClient
 * HVArrangement and its descendants
 * Image
 * ImageSprite
 * MediaStore
 * TinyWebDB
 * Voting

Change-Id: Ib9bd0a0a929b26ad44eeda58a7c637398dd70219

Reported by the forum posting [1], the SoundRecorder crashes when the
Start method is called. After some debugging, this is due to
unexpected values being reported via the onInfo method being called
with an unexpected, non-documented value of `what`. The code always
called controller.recorder.stop(), but since the MediaRecorder hadn't
transitioned to the recording state yet, stop() throws an uncaught
IllegalStateException, which kills the program.

This commit makes the onInfo method more robust by reporting known
`what` values via dispatchErrorOccurredEvent and ignoring any values
not declared by AOSP. It also adds a call to StoppedRecording()
otherwise the app may not have been aware of the failure state.

[1] https://groups.google.com/d/msg/mitappinventortest/qMPzn5s82UY/LJu8znfrAwAJ

Change-Id: Ifd12fcf016df07b500b958bd4900781bf6ff6c47

When set this property causes lists to be displayed in JSON notation
rather then Lisp notation. Its default value is “false” so current
projects continue to work and new projects will still use Lisp
format. This can be changed in the future once the Companion that
supports ShowListsAsJson is widely deployed.

Change-Id: I2e6b25c32d27377685eb8111f44536479e7c55b7

Newer versions of the App Engine SDK insist that we declare our
statically served files. We omitted /reference/**. This commit adds it.

Change-Id: I652adae99b7bf3df50ea8b6fb3f201c430d3e002

Change-Id: I45302130bece743ac779ed5c569208b534f82e57

Selected element in the palette is now colored green making it easier to
see that it is selected.

Change-Id: I09006eb537495343bef3dfdad2888a3d96135e29

There is a prompt for the user to create or open a project. However,
this is based on whether currentFileEditor is set, which is a problem
is a project load is in process. This commit adds a check to
EditorManager to see if there is an editor even though
currentFileEditor is null, in which case no prompt is shown.

Change-Id: Icf044a638fef19d7fb5660a4783f852c7ccbb6cb

The loading of GallerySettings has a high latency in production. This
commit makes it so that the GallerySetting object is created only once
per GAE instance. It also updates the Flag class to cache the value on
first read since these flags are set in appengine-web.xml and are only
expected to change during deployment of a new version of App Inventor.

Change-Id: I7bb123697e821f2510807c5cbd5671bae71db307

This commit updates Google App Engine and Google Cloud Storage
libraries to the most recent versions. This fixes exceptions in the
dev server regarding the deprecated Files API.

Change-Id: Icd3883c292cfb055bb18560ca04aaf2b313ba9ba

Commit e38f54e9 deferred gallery loading until the user opened the
gallery. This commit provides more complex logic for managing the
"Loading..." messages shown during loading of the gallery by counting
the number of tabs that have loaded content. In the earlier commit, if
the primary tab wasn't loaded the message would go away if one of the
non-visible tabs finished loading. Now the loading message will only
go away if all tabs have loaded their content.

Change-Id: I019891c4b3160f91658f43ad1d42f47e00cffd32

Switching between tabs will save settings even if nothing has
changed. This results in more network operations than is necessary to
maintain correct behavior of the application.

This commit updates the CommonSettings class hierarchy to record when
changes have been made. UserSettings and ProjectSettings will perform
RPC if and only if the changed flag is true. Otherwise, saving
settings is a no-op.

Change-Id: I1f15d39418036b320ee3050003034b97e46415be

Only certain actions modify the state of android.keystore on the
server. The keystore can only change if a new one is imported, the
current keystore is deleted, or when no keystore exists but the user
builds an app. However, this is not reflected in the flow control of
App Inventor. Switching between projects, for example, will check for
the state of android.keystore even though this is a user file not a
project file, and the state of the android.keystore will be invariant
between projects.

This commit caches the result of checks for android.keystore to reduce
the number of round trips to the server and only rechecks when an
action may result in an update to the status or in the event an
earlier call to hasUserFile fails.

Change-Id: I65df499d509ea7098f6b349d0da09cdaea84dd08

Reduce logging so only anomalous situations result in log entries (you
can turn logging back on by setting appinventor.debugging to true in
appengine-web.xml).

Disable App Stats, as it really isn’t needed in production.

Provide reasonable caching and expiration on some static files,
including making sure they are served statically (this is required when
removing App Stats).

Change-Id: I84bd4877a2cbeba79f7da9248919920ea27c499b

Daily we have 750,000+ requests for resources via /ode/gallery. These
requests occur even if the user never actually accesses the gallery
since they are done at initialization of Ode. This commit defers the
initialization of the gallery UI so that it is only generated once the
user accesses the gallery.

Change-Id: Ic16ae5f45c8f79570d763408f5958170fa332ae1