126 lines
3.9 KiB
Java
126 lines
3.9 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.bluetooth;
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import com.android.settings.R;
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import android.content.Context;
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import android.preference.Preference;
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import android.util.TypedValue;
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import android.view.View;
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import android.widget.ImageView;
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/**
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* BluetoothDevicePreference is the preference type used to display each remote
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* Bluetooth device in the Bluetooth Settings screen.
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*/
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public class BluetoothDevicePreference extends Preference implements LocalBluetoothDevice.Callback {
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private static final String TAG = "BluetoothDevicePreference";
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private static int sDimAlpha = Integer.MIN_VALUE;
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private LocalBluetoothDevice mLocalDevice;
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/**
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* Cached local copy of whether the device is busy. This is only updated
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* from {@link #onDeviceAttributesChanged(LocalBluetoothDevice)}.
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*/
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private boolean mIsBusy;
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public BluetoothDevicePreference(Context context, LocalBluetoothDevice localDevice) {
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super(context);
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if (sDimAlpha == Integer.MIN_VALUE) {
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TypedValue outValue = new TypedValue();
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context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true);
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sDimAlpha = (int) (outValue.getFloat() * 255);
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}
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mLocalDevice = localDevice;
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setLayoutResource(R.layout.preference_bluetooth);
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localDevice.registerCallback(this);
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onDeviceAttributesChanged(localDevice);
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}
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public LocalBluetoothDevice getDevice() {
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return mLocalDevice;
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}
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@Override
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protected void onPrepareForRemoval() {
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super.onPrepareForRemoval();
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mLocalDevice.unregisterCallback(this);
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}
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public void onDeviceAttributesChanged(LocalBluetoothDevice device) {
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/*
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* The preference framework takes care of making sure the value has
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* changed before proceeding.
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*/
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setTitle(mLocalDevice.getName());
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/*
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* TODO: Showed "Paired" even though it was "Connected". This may be
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* related to BluetoothHeadset not bound to the actual
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* BluetoothHeadsetService when we got here.
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*/
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setSummary(mLocalDevice.getSummary());
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// Used to gray out the item
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mIsBusy = mLocalDevice.isBusy();
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// Data has changed
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notifyChanged();
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// This could affect ordering, so notify that also
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notifyHierarchyChanged();
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}
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@Override
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public boolean isEnabled() {
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return super.isEnabled() && !mIsBusy;
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}
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@Override
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protected void onBindView(View view) {
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super.onBindView(view);
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// Disable this view if the bluetooth enable/disable preference view is off
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setDependency("bt_checkbox");
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ImageView btClass = (ImageView) view.findViewById(R.id.btClass);
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btClass.setImageResource(mLocalDevice.getBtClassDrawable());
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btClass.setAlpha(isEnabled() ? 255 : sDimAlpha);
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}
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@Override
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public int compareTo(Preference another) {
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if (!(another instanceof BluetoothDevicePreference)) {
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// Put other preference types above us
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return 1;
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}
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return mLocalDevice.compareTo(((BluetoothDevicePreference) another).mLocalDevice);
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}
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}
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