Change-Id: I333693ab8e4088180cc25768d874ad7320d9da8b

Bug: 2978975

Change-Id: Ie634e8ae827fe093c5c673b75d85835050b03794

Actually it was caused by canceling repeat key (space and delete) when
multiple pointer are touching.

Bug: 2975041
Change-Id: If82183b9225efdace7b5418860b9664f1705b7ec

This change also disable the special behavior of long press a key that
has only one digit alternate.  If the visual design of both the pop-up
preview and the mini keyboard will look like same, I think that
showing mini keyboard is enough for the key that has one digit
alternate.

Bug: 2973546
Change-Id: I04f138c120aa58526fe054626dac856171fb7a58

Bug: 2973373
Change-Id: I9871c09ec8c1c2aa945d97392e61ee1ec585baef

This change also fixes bug#2973683.

Bug: 2973546
Bug: 2973683
Change-Id: I67573e5b7cad4af261591a4a608d0596dd7901f2

Change-Id: Iba8e43ba6125e559d4c7d9cadb6bcb13b8eefc83

This change also refactors some mini-keyboard related methods in
LatinKeyboardBaseView and PointerTracker class.

Bug: 2973236
Change-Id: I3190fe89ea3ac3c6d351ed4b6d77de98a0aa65db

Bug: 2959169
Change-Id: Iea1bec44baf3344d9f91280bd2b8f28476cbcf51

Bug: 2959169
Change-Id: I9c78f9417aaa448b8b23596bc3e748fe99085393

TODO:
- Remove close button on mini-keyboard
- Dismiss mini-keyboard when finger leave the screen while no key is selected

This change also renames some instance variables to have more meaningful name.

Bug: 2959169
Change-Id: I9fd79116a647d7be82415c6e9e7cdaf6edcb2bf6

Bug: 2959169
Change-Id: Id2b0b974fffdf6f09ee1828e957b973d2ce1c315

This change also adds debugging log to PointerTracker class

Bug: 2959169
Change-Id: Ie6cf67681180467bd8ba35d0205ce6727b7684a2

Bug: 2910379
Change-Id: I5cfae33e72a406585137842a2260310813cee07f

It is easier to track each pointer if a PointerTracker object keeps
its pointer id.

Bug: 2910379
Change-Id: If3e3b0cf3d834d22302598f4d85d54c9a4ce92ba

The KeyDetector abstracts key detection algorithm. The
ProximityKeyDetector is one of its concrete implementations.  Another
one that might be called XAxisKeyDetector will follow to realize the
pop-up mini-keyboard behavior described in bug#2959169.

Bug: 2959169
Change-Id: Idd3fc53282e6b721ec7a4ce500af8aba21ce07a3

Bug: 2910379
Change-Id: I179ae4359afb57c351d5fcc5f5453c30d3ef0c01

Bug: 2910379
Change-Id: Iefafa2d30ad16f898a00664e4bf3e3e88dcd2cb2

Bug: 2910379
Change-Id: I9503b2211b272a4a2903d0732985e5ab8ee39440

bug: 2964045
Change-Id: I97d95181e1a6838ace9c135aa92e7f20034e821f

This change moves the following methods into KeyDebounce class.
- MotionEvent handling methods (onDownEvent etc.).
- Keyboard action event generator method (detectAndSendKey).
- Multi-tap key support methods (resetMultiTap etc.).
- Key preview text generator method (getPreviewText).

The change that makes KeyDebounce a top-level class will follow.

Bug: 2910379
Change-Id: I1526c0461e247d97f0c4b3bd580330f137c787be

Extract key press and release handling out of previewKey() to
KeyDebouncer class. And pass Key object as argument of previewKey()
instead of key index.

Bug: 2910379
Change-Id: Ifec39cfc4845bd92da2f62eba2b26ac6a5cbb341

These three conditions assign true to the mAbortKey flag.
1. setKeyboard() sets the new keyboard layout.
2. long press shows the pop-up mini keyboard.
3. ACTION_CANCEL event is occurred.

In the case 1, in LatinIME so far, only "symbol key" and "language
switch" cause keyboard layout change.  In both cases, the event is
occurred in onUpEvent(), so we do not need to worry about aborting
event.

In the case 2, long press is used only to pop-up mini-keyboard and at that
time mMiniKeyboardOnScreen could be used as a flag.

In the case 3, though I'm not sure when this case occurs, in
onCancelEvent() all the things that should be canceled are canceled
in onCancelEvent().

Bug: 2910379
Change-Id: I12377c5f3e808f1c017ce980e12b1513895047bc

This change also re-orders instance variables and eliminates
unnecessary ones.

Bug: 2910379
Change-Id: I6b2217f75738fada32a33f59f0f7adba5e99dd6e

This reverts commit 09f530e2.

Change-Id: I3106cd22cc1eac750f05bce26df6af3026dfaf86

This change will display the key board preview instantaneously when
the key is pressed.  Dismissing the key preview will be delayed
slightly after the key is released, as we do now.

Because in multi touch mode, we should instantaneously change keyboard
layout when modifier key, such as shit and symbol, is pressed.

Change-Id: I49348d563ca0f40f5a0a236bdcd0bb07eedd599b

This change eliminates the need of extra MotionEvent allocation.  Also
this will lead to the easy way to handle multi touch events.

Bug: 2910379
Change-Id: Ibcfcba554b732c13105f91877b41b553ee6928ba

Bug: 2910379
Change-Id: Ib26a898ea108ee4292f9f91b6d7d10c1fc380fd1

This change moves SwipeTracker out from LatinKeyboardBaseView.  Also
this introduces EventBuffer class for swipe tracking buffer.

Bug: 2910379

Change-Id: I48ff714226a248ca063cbaf9755cf45e458f7402

Change-Id: I57cc6fb6a9eeb65ce8c0c3c3262fd525726643e2

GestureDetector listener's onFling method will not call detectAndSendKey
anymore.

Make gesture detector be ignoring multitouch.  Refactoring
GestureDetector out of LatinKeyboardBaseView class change will follow.

Bug: 2910379
Change-Id: I0b2a9c4cf7d432f89f9085f3c2bdf3a3757a8903

Bug: 2950714
Change-Id: I3110369c085f89ee1e8f7392a9a04a6b9e377ed4

Bug: 2910379
Change-Id: If0ef09d8b0e7ca1c62b4c5a31bcaa620664868f2

This change encapsulates mInKeyRepeat (former mRepeatKeyIndex) into
UIHandler class.  Also this eliminates mCurrentKey and mLastTapTime
dependency from repeatKey method.

Bug: 2910379
Change-Id: I9351a558be2ebc04de4ebb0d323af4be33bd470c

This change eliminates mCurrentKey dependency from openPopupIfRequired
method.  Also slightly cleanup onModifiedTouchEvent.

Bug: 2910379
Change-Id: I90c9b39c46c0bb32ecc6588abfc49eb60315f54c

This change simplifies onModifierTouchEvent to focus on handling
motion event related to a key event.

Other refactoring will follow in order to support multi touch.

Bug: 2910379

Change-Id: I036be64168d951a535600a7910b36bc109f88490

TODO: Cleanup will follow.

Change-Id: I4a68ba9f2f55760aa24187f1f13fdfa8a0b70963