This is an amendment to If848320c

bug: 5000317
Change-Id: I7eed5759c6adc0538c51f540c84a597919e792fa

Bug: 4993127
Change-Id: Id16039058777b50f223458e190b32c1bc3b1fd53

Before starting input on new TextView, we must clear the CandidateView
because it may hold the suggestion of previous TextView or even worse
the suggestions pane has been expanded and keyboard has been hidden.

Bug: 4995414
Change-Id: If848320c1a510e7018d36ed8ac61291be2fc6ce5

Bug: 4998490
Change-Id: I3527fc41f0f03bbb32e3d1880665c6995354aa57

Follow up to I96230f05

Change-Id: I0ee7ccb5461764490ae9c977658883b10fe3ed3d

This change also rename static inner class to more readable name and
get rid of unnecessary object reference from PointerTracker.

Bug: 4768084
Change-Id: Ie4e2b940d66b47d41efcae7eeac853cdae2e4d38

Bug: 4768084
Change-Id: Ib8771afd7363a4a5590b2b4a586e3014c026be34

Change-Id: I87344f071e982dfc37b17553c5a7054e26009cc7

To sort out the issue, main keyboard and mini keyboard have to share
the pointer trackers.

In order to prepare for that, KeyboardView needs to be refactored as
two separate classes. KeyboardView is responsible for drawing keyboard
visual. And LatinKeyboardBaseView is responsible for handling key
event and mini keyboard as well.

Bug: 4768084

Change-Id: I5643e333b9bdfde0c939a0693cea76bd22f38897

Change-Id: I26d9f90fe18bd7723f1c3c0c9fafbb659cb2f020

Change-Id: I65e57f6742186b3434d6582ce7f2a1d5d91ce588

Change-Id: I3f4ecfe7f2d96613dd37d41d9195d94864f82b48

Change-Id: I5e43c0919e89972283fd18eb29d69f96f1bd0290

Change-Id: I4721bf831b5edbea1dd4309c6ce907544b098d62

To keep unit test simple, instead of specifying top padding in
the constructor, make separate setter for it.

Change-Id: I8870622cc1bd97420637b8c465bdb6c9dd366062

Bug: 4985540
Change-Id: I9ca9e9bd990d9cdae0da22625be88bbfa4c7ee62

Because Key only has bottom padding, to make mini keyboard vertically
symmetric and looks nicer, we should add mini keyboard top padding
that equals to Key bottom padding (a.k.a. vertical gap).

Change-Id: Icceb687d50edfa48e0f0830a60a1e230836c982f

Compatible with Gingerbreada theme.

Change-Id: Id05bb8992dac47a23e12af7ab62924b5bc25b7ca

Change-Id: If937ca0d05d50def115f6d275ed4b727c71e7bf4

Change-Id: I62e24bc39e80e2b51d1a29d093a96a8480254da2

Change-Id: Ib8f1a712a1fc3fd6f08b336617b4b6a17af11376

Change-Id: I2e0108ba429b477a07cfd53dcc664c0e43ff16a7

Bug: 4948171

Change-Id: If1e8e5f2f0eafe29b36a10d5f5e9e1fb26d67597

Bug: 4905427
Change-Id: I9b44d65e4503e46ce71322a3c325c55d188e34a0

Bug: 4903845
Change-Id: I9e2e17a9eee72df5c92414dcd4796ed7fe1655e1