Readd Policy Manager as plugin

This patch reverts commit c6f9a9b8468b3746a3dec7ee2a0b7d84ec9fb44a
and update it.

Policy Manager decides next layout by inputed event and current state
based on the policy table.

And Policy Manager is plugin for Window Manager.
Therefore the OEMs can replace it.

This patch provides Policy Manager I/F as reference implementation
and does not have policy table.
Therefore Policy Manager updates each layers
to draw the applications in requested area
in accordance with just like activate/deactivate request.

[APIs of Policy Manager class]
  - int initialize(void)
      Initialize Policy Manger.
        in:  none
        out: 0(success), -1(error)

  - void registerCallback(CallbackTable callback_table)
      Register callback functions.
        in:  the pointers of callback handlers
        out: none

      "CallbackTable" type is as follows:
        typedef struct
        {
            Handler onStateTransitioned;
            Handler onError;
        } CallbackTable;

      "Handler" type is as follows:
        using Handler = std::function<void(json_object *)>;

  - int setInputEventData(json_object *json_in)
      Set input event data for the policy table.
        in:  input event data as json_object
        out: 0(success), -1(error)

  - int executeStateTransition(void)
      Execute state transition by using set input event data.
        in:  none
        out: 0(success), -1(error)

  - void undoState(void)
      Undo state only once per once state transition.
        in:  none
        out: none

[Callbacks of Policy Manager class]
 - void onStateTransitioned(json_object *json_out)
     When state transition succeeds, this callback is called.
     The argument json_out has the state after transition.

 - void onError(json_object *json_out)
     When state transition fails, this callback is called.
     The argument json_out has the error information
     like message, inputed event datas and etc..

Bug-AGL: SPEC-1537

Change-Id: Ib8c71f2e544cb90b6763d07fad56dc1c453e9a97
Signed-off-by: Yuta Doi <yuta-d@witz-inc.co.jp>

1 files changed, 175 insertions, 0 deletions

diff --git a/policy_manager/stm/stm.h b/policy_manager/stm/stm.h
new file mode 100644
index 0000000..deebf9c
--- /dev/null
+++ b/policy_manager/stm/stm.h
@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2018 TOYOTA MOTOR CORPORATION
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef TMCAGLWM_STM_HPP
+#define TMCAGLWM_STM_HPP
+
+#define STM_TRUE 1
+#define STM_FALSE 0
+
+#define STM_CREATE_EVENT_ID(evt, ctg, area) \
+    ((evt) | ((ctg) << 8) | ((area) << 16))
+
+#define STM_GET_EVENT_FROM_ID(id) \
+    ((id) & 0xFF)
+
+#define STM_GET_CATEGORY_FROM_ID(id) \
+    (((id) >> 8) & 0xFF)
+
+#define STM_GET_AREA_FROM_ID(id) \
+    (((id) >> 16) & 0xFF)
+
+// Event number
+enum StmEvtNo {
+    StmEvtNoNone = 0,
+    StmEvtNoActivate,
+    StmEvtNoDeactivate,
+    StmEvtNoRestrictionModeOff,
+    StmEvtNoRestrictionMode1On,
+    StmEvtNoRestrictionMode2On,
+    StmEvtNoUndo,
+
+    StmEvtNoNum,
+
+    StmEvtNoMin = StmEvtNoNone,
+    StmEvtNoMax = StmEvtNoNum - 1,
+};
+
+// Category number
+enum StmCtgNo {
+    StmCtgNoNone = 0,
+    StmCtgNoHomescreen,
+    StmCtgNoMap,
+    StmCtgNoGeneral,
+    StmCtgNoSplitable,
+    StmCtgNoPopUp,
+    StmCtgNoSystemAlert,
+    StmCtgNoRestriction,
+    StmCtgNoSystem,
+    StmCtgNoSoftwareKeyboard,
+    StmCtgNoDebug,
+
+    StmCtgNoNum,
+
+    StmCtgNoMin = StmCtgNoNone,
+    StmCtgNoMax = StmCtgNoNum - 1,
+};
+
+// Area number
+enum StmAreaNo {
+    StmAreaNoNone = 0,
+    StmAreaNoFullscreen,
+    StmAreaNoNormal,
+    StmAreaNoSplitMain,
+    StmAreaNoSplitSub,
+    StmAreaNoOnScreen,
+    StmAreaNoRestrictionNormal,
+    StmAreaNoRestrictionSplitMain,
+    StmAreaNoRestrictionSplitSub,
+    StmAreaNoSoftwareKyeboard,
+
+    StmAreaNoNum,
+
+    StmAreaNoMin = StmAreaNoNone,
+    StmAreaNoMax = StmAreaNoNum - 1,
+};
+
+// Layer number
+enum StmLayerNo {
+    StmLayerNoHomescreen = 0,
+    StmLayerNoApps,
+    StmLayerNoNearHomescreen,
+    StmLayerNoRestriction,
+    StmLayerNoOnScreen,
+
+    StmLayerNoNum,
+
+    StmLayerNoMin = StmLayerNoHomescreen,
+    StmLayerNoMax = StmLayerNoNum - 1,
+};
+
+// Layout kind number
+enum StmLayoutNo {
+    StmLayoutNoNone = 0,
+    StmLayoutNoPopUp,
+    StmLayoutNoSysAlt,
+    StmLayoutNoMapNml,
+    StmLayoutNoMapSpl,
+    StmLayoutNoMapFll,
+    StmLayoutNoSplNml,
+    StmLayoutNoSplSpl,
+    StmLayoutNoGenNml,
+    StmLayoutNoHms,
+    StmLayoutNoRstNml,
+    StmLayoutNoRstSplMain,
+    StmLayoutNoRstSplSub,
+    StmLayoutNoSysNml,
+    StmLayoutNoSftKbd,
+    StmLayoutNoDbgNml,
+    StmLayoutNoDbgSplMain,
+    StmLayoutNoDbgSplSub,
+    StmLayoutNoDbgFll,
+
+    StmLayoutNoNum,
+
+    StmLayoutNoMin = StmLayoutNoNone,
+    StmLayoutNoMax = StmLayoutNoNum - 1,
+};
+
+// Mode kind number
+enum StmModeNo {
+    StmModeNoRestrictionMode = 0,
+
+    StmModeNoNum,
+
+    StmModeNoMin = StmModeNoRestrictionMode,
+    StmModeNoMax = StmModeNoNum - 1,
+};
+
+// Enum for mode state
+enum StmRestrictionModeSttNo {
+    StmRestrictionModeSttNoOff = 0,
+    StmRestrictionModeSttNo1On,
+    StmRestrictionModeSttNo2On,
+};
+
+// String for state
+extern const char* kStmEventName[];
+extern const char* kStmCategoryName[];
+extern const char* kStmAreaName[];
+extern const char* kStmLayoutName[];
+extern const char* kStmLayerName[];
+extern const char* kStmModeName[];
+extern const char** kStmModeStateNameList[];
+
+// Struct for state
+typedef struct StmBaseState {
+    int changed;
+    int state;
+} StmBaseState;
+
+typedef struct StmState {
+    StmBaseState mode[StmModeNoNum];
+    StmBaseState layer[StmLayerNoNum];
+} StmState;
+
+// API
+void stmInitialize();
+int stmTransitionState(int event_no, StmState* state);
+void stmUndoState();
+
+
+#endif  // TMCAGLWM_STM_HPP