Move non-ui bt settings code to SettingsLib

Mostly this is moving classes from Settings to SettingsLib but there
were a few changes to support this separation.
 - A bunch of things became public rather than package
 - Moved some settings only code out of these classes
 - Added error callback to handle errors

To see the changes from original classes view the diff against
patch-set 1.

Bug: 19180466
Change-Id: I69fd888362c6dbb325f6113b32c4b15cc6a23a41

1 files changed, 216 insertions, 0 deletions

diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothAdapter.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothAdapter.java
new file mode 100644
index 0000000..0c1adec
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothAdapter.java
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.android.settingslib.bluetooth;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothProfile;
+import android.content.Context;
+import android.os.ParcelUuid;
+import android.util.Log;
+
+import java.util.Set;
+
+/**
+ * LocalBluetoothAdapter provides an interface between the Settings app
+ * and the functionality of the local {@link BluetoothAdapter}, specifically
+ * those related to state transitions of the adapter itself.
+ *
+ * <p>Connection and bonding state changes affecting specific devices
+ * are handled by {@link CachedBluetoothDeviceManager},
+ * {@link BluetoothEventManager}, and {@link LocalBluetoothProfileManager}.
+ */
+public final class LocalBluetoothAdapter {
+    private static final String TAG = "LocalBluetoothAdapter";
+
+    /** This class does not allow direct access to the BluetoothAdapter. */
+    private final BluetoothAdapter mAdapter;
+
+    private LocalBluetoothProfileManager mProfileManager;
+
+    private static LocalBluetoothAdapter sInstance;
+
+    private int mState = BluetoothAdapter.ERROR;
+
+    private static final int SCAN_EXPIRATION_MS = 5 * 60 * 1000; // 5 mins
+
+    private long mLastScan;
+
+    private LocalBluetoothAdapter(BluetoothAdapter adapter) {
+        mAdapter = adapter;
+    }
+
+    void setProfileManager(LocalBluetoothProfileManager manager) {
+        mProfileManager = manager;
+    }
+
+    /**
+     * Get the singleton instance of the LocalBluetoothAdapter. If this device
+     * doesn't support Bluetooth, then null will be returned. Callers must be
+     * prepared to handle a null return value.
+     * @return the LocalBluetoothAdapter object, or null if not supported
+     */
+    static synchronized LocalBluetoothAdapter getInstance() {
+        if (sInstance == null) {
+            BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
+            if (adapter != null) {
+                sInstance = new LocalBluetoothAdapter(adapter);
+            }
+        }
+
+        return sInstance;
+    }
+
+    // Pass-through BluetoothAdapter methods that we can intercept if necessary
+
+    public void cancelDiscovery() {
+        mAdapter.cancelDiscovery();
+    }
+
+    public boolean enable() {
+        return mAdapter.enable();
+    }
+
+    public boolean disable() {
+        return mAdapter.disable();
+    }
+
+    void getProfileProxy(Context context,
+            BluetoothProfile.ServiceListener listener, int profile) {
+        mAdapter.getProfileProxy(context, listener, profile);
+    }
+
+    public Set<BluetoothDevice> getBondedDevices() {
+        return mAdapter.getBondedDevices();
+    }
+
+    public String getName() {
+        return mAdapter.getName();
+    }
+
+    public int getScanMode() {
+        return mAdapter.getScanMode();
+    }
+
+    public int getState() {
+        return mAdapter.getState();
+    }
+
+    public ParcelUuid[] getUuids() {
+        return mAdapter.getUuids();
+    }
+
+    public boolean isDiscovering() {
+        return mAdapter.isDiscovering();
+    }
+
+    public boolean isEnabled() {
+        return mAdapter.isEnabled();
+    }
+
+    public void setDiscoverableTimeout(int timeout) {
+        mAdapter.setDiscoverableTimeout(timeout);
+    }
+
+    public void setName(String name) {
+        mAdapter.setName(name);
+    }
+
+    public void setScanMode(int mode) {
+        mAdapter.setScanMode(mode);
+    }
+
+    public boolean setScanMode(int mode, int duration) {
+        return mAdapter.setScanMode(mode, duration);
+    }
+
+    public void startScanning(boolean force) {
+        // Only start if we're not already scanning
+        if (!mAdapter.isDiscovering()) {
+            if (!force) {
+                // Don't scan more than frequently than SCAN_EXPIRATION_MS,
+                // unless forced
+                if (mLastScan + SCAN_EXPIRATION_MS > System.currentTimeMillis()) {
+                    return;
+                }
+
+                // If we are playing music, don't scan unless forced.
+                A2dpProfile a2dp = mProfileManager.getA2dpProfile();
+                if (a2dp != null && a2dp.isA2dpPlaying()) {
+                    return;
+                }
+            }
+
+            if (mAdapter.startDiscovery()) {
+                mLastScan = System.currentTimeMillis();
+            }
+        }
+    }
+
+    public void stopScanning() {
+        if (mAdapter.isDiscovering()) {
+            mAdapter.cancelDiscovery();
+        }
+    }
+
+    public synchronized int getBluetoothState() {
+        // Always sync state, in case it changed while paused
+        syncBluetoothState();
+        return mState;
+    }
+
+    synchronized void setBluetoothStateInt(int state) {
+        mState = state;
+
+        if (state == BluetoothAdapter.STATE_ON) {
+            // if mProfileManager hasn't been constructed yet, it will
+            // get the adapter UUIDs in its constructor when it is.
+            if (mProfileManager != null) {
+                mProfileManager.setBluetoothStateOn();
+            }
+        }
+    }
+
+    // Returns true if the state changed; false otherwise.
+    boolean syncBluetoothState() {
+        int currentState = mAdapter.getState();
+        if (currentState != mState) {
+            setBluetoothStateInt(mAdapter.getState());
+            return true;
+        }
+        return false;
+    }
+
+    public void setBluetoothEnabled(boolean enabled) {
+        boolean success = enabled
+                ? mAdapter.enable()
+                : mAdapter.disable();
+
+        if (success) {
+            setBluetoothStateInt(enabled
+                ? BluetoothAdapter.STATE_TURNING_ON
+                : BluetoothAdapter.STATE_TURNING_OFF);
+        } else {
+            if (Utils.V) {
+                Log.v(TAG, "setBluetoothEnabled call, manager didn't return " +
+                        "success for enabled: " + enabled);
+            }
+
+            syncBluetoothState();
+        }
+    }
+}