Frameworks: Heads up meets SlimKat....SlimKat meets Google IO [1/4]

**Note: this is not the orignal commit, this preserves CM's blacklist and global enable/disable options.

**Orignal commit can be found here:
https://github.com/SlimRoms/frameworks_base/commit/323ed77c5e5bd6d421beae1f8118eb580be5ecf1

First introduced from apple, showed as android version on PA as hover and now found
in android code as native implementation we want to do our interpretation of this feature.
Especially thanks PA and CM for some of the UX ideas.

We have basically split this feature in two parts.

1. Googles native integration. We keep it as is and use the native flags for it. Apps
   (in our case Dialer, Mms, Email per account) can force show a heads up notification
   if the notification is important. So basically same what was shown on Google IO the first
   time to the public. Eg the dialer on SlimKat is doing exactly the same now like google want it.
   Due that we use same flags like google every future app with heads up support will automatically
   show as heads up.

2. Give the user an ability to enable heads up mode for third party apps which do not have a native
   integration. Well first thought was on which apps a user would usally use it (keeping in minde the idea from google....heads up
   is for important notifications and for nothing more)? Right on chat, email
   or social apps. On all other apps it simply does not make sense at all. Which leads into the question why the
   current integrations are handling blacklists or whitelists and enable it per default for all apps. This
   is from UX point of view an absolutely no go (just imagine the user blacklists half of the 200 apps installed lol).
   Aside that parsing long lists is a peformance problem.

   So our attempt goes into another direction. Headsup for (native integration is another story) apps is disabled
   by default. We bind the information directly to the application package. So each app carries the information itself.
   The user can either enable it with a longlick in the notification drawer on the notification or in Settings->app->App info
   as well via a check box. As soon it is enabled for this app every notification from this app will show as heads up as long
   it is not an ongoing notification.

   In general on system signed apps the user is not allowed to change the heads up state. Thats nothing the user should
   decide....the system should do. Aside that it prevends user to enable heads up for eg IME selector etc etc.

Thats the basic concept behind. In addition to this concept following things were done.

- Introduce a new expanded notification flag. Apps can send it via extra metadata to force
  a expanded heads up notification is it is needed (eg dialer).
- Add a user option to enable always expanded on heads up notification
- Add a user option to set the timeout for the heads up view.
- Introduce a snooze button. Every heads up notification has a snooze button on the top right. If the user press it
  heads up is disabled for a certain time (like a do not disturb mode). The time length is user configurable in settings.
- We had a bunch of user which want to use heads up in a more intrusive way. Current default behaviour is that a heads up
  shows up if the user did not push the heads up of this app into background. This is due that the system assumes if the user
  put it into background he or she do not want to be disturbed by notifications of this app at the moment. Of course in the moment
  the user interacted with the background notification heads up is activated again. This leads like google suggested in a very
  good non intrusive way. Well but some user use it in another way (especially on immversive mode) and want to be notified on every
  notification update of this app via heads up. Due of this understandable other user behaviour we add an option for it to allow
  this scenario.
- Detect direction of the swipe. Left swipe will dismiss the notification (if it is not a non clearable). Right swipe will just
  hide the heads up and the notification is still in background accessable in the notification drawer.

Other then that some fixes were done as well (eg utilize the back button, correctly handle the hiding of the heads up,
handle action buttons on heads up view correctly, fix several expanded desktop and immersive issues
and some other issues the AOSP implementation currently has)

To summarize...heads up this way is very non intrusive and especially we do not need a bunch of settings or blacklists.
So it is pretty straight forward, fast, clean and user friendly.

Some visual examples:

https://plus.google.com/107859134357373490612/posts/bJABHs1aNMj

Change-Id: I81a7473ca48eb5fd91263ec63c82957d8b3ad17b

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/mahdi_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java
	packages/SystemUI/src/com/android/systemui/statusbar/tv/TvStatusBar.java
HeadsUp: Correctly add and remove the window

isAttachedToWindow() basically works to determine if the view was attached or not.

But on the boot up process when already addHeadsUpView is called but the system is not
fully up and a recreation happens (eg on TRDS...due that the UIModeManager is doing its work as soon as system is ready)
the view gets attached....but not removed on the recreation due that at this time isAttachedToWindow() will return false even though the
window was added.

To solve simply use a boolean instead of isAttachedToWindow()

Change-Id: Ib576a83cadc581683f2a5b0afc922c53b01888b7
fb: Show heads up at the bottom of the screen (1/2)

Due of user requests and indeed especially on hw key devices for a better
workflow we add an option to show heads up notifications on the bottom instead
of the top.

Animation we leave as is due that if it slide from the bottom into the screen it happens
to often that the user accidentaly interacts with it. If it comes from the top of the
container we add, the user has enough time to realize it. Sometimes a ms can make a big difference.

As well this commit fixes the wrong gap on the top if user boots up directly
into immersive mode.

PS:
- if IME keyboard is showing show the heads up on the top to do not disturb the typing.
PS:
- NPE if updatePosition is called to early from the system.

Change-Id: Iea7fbe466808531a9351cf4048570b8f56eb698e

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/mahdi_dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Extend SwipeHelper to support vertical gestures
* Un-hardcode CONSTRAIN_SWIPE and FADE_OUT_DURING_SWIPE, define
  through proper callback, per-layout
* Up (GESTURE_NEGATIVE) and down (GESTURE_POSITIVE), mostly needed
  by new Hover hide /w swipe up gesture

- @cristianomatos: minor adaptations to fit crDroid sources and heads up

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: I68c42a8ccabca73a1b241ba7cf264db9c912fccd

Conflicts:
	packages/SystemUI/src/com/android/systemui/SwipeHelper.java
HOVER: Implement hide only on swipe up

    * Add an Y axis HideHelper, just extend current X axis SwipeHelper and
      change interested methods behaviors
    * Some clean up and indenting

    Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
    Change-Id: I42a260ea993c614b0b9b4558a95dd44dd517c4f1

Change-Id: I9d699ac0a6e632bc1110e93cac9d924611525014
Slim Heads up: change behaviour of back key

Currently back key hides the heads up. We change it that the back key is still
working for the app which has focus and not for the heads up at all.

Reasons:

1. A lot user requested this due that they often hide the heads up during they work
   on the phone, simply due that the back button is often pressed on a normal workflow.
   The results is indeed that a lot heads up windows are missed excidentaly.

2. First I thought to make it optional. But there is another big reason to do it this way. Current
   behaviour is that the heads up view gets focus...and that we dispatch the back key only. Thing is
   that other key events are still rooted to the heads up window. Well most things a user will not see.
   But eg on apps with input field some keys on the IME keyboard do not work during the heads up is showing
   which is a big no go when we assume that heads up needs to be as much non intrusive as possible.

That being said we remove the dispatch override and give the heads up window FLAG_NOT_FOCUSABLE flag
which will bypass any key events to the window behind which had focus before the heads up showed up.

FLAG_NOT_TOUCH_MODAL we can remove due that FLAG_NOT_FOCUSABLE automatically enables the FLAG_NOT_TOUCH_MODAL flag.

Change-Id: Ied4c7d2dd5b99f89af958f01db980a36d431bbc3
Headsup tile
Update Roboto fonts to Android L versions

Change-Id: I541694b159e32bb90c1889e894c4352e43f3ce40
QS: Update heads up tile icons

The bell icon for the "on" state look a bit crappy.
Update them too look more lika a bell.

Screenshot: http://goo.gl/rC1VFD

Change-Id: I9a6a54a5ee9ac0100ebf749ee3babe02eb0e2e32
Hover tile