Partial implementation for the favorite and available printer tracking. (66160bb8) · Commits · e / os / android_frameworks_base

packages/PrintSpooler/AndroidManifest.xml

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	@@ -50,6 +50,12 @@
	android:theme="@style/PrintJobConfigActivityTheme">		android:theme="@style/PrintJobConfigActivityTheme">
	</activity>		</activity>

			<activity
			android:name=".ChoosePrinterActivity"
			android:exported="false"
			android:theme="@android:style/Theme.Holo.Light">
			</activity>

	<receiver		<receiver
	android:name=".NotificationController$NotificationBroadcastReceiver"		android:name=".NotificationController$NotificationBroadcastReceiver"
	android:exported="false" >		android:exported="false" >

packages/PrintSpooler/res/layout/choose_printer_activity.xml

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			<?xml version="1.0" encoding="utf-8"?>
			<!-- Copyright (C) 2013 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.
			-->

			<ListView xmlns:android="http://schemas.android.com/apk/res/android"
			android:id="@+id/list_view"
			android:layout_width="fill_parent"
			android:layout_height="fill_parent"
			android:orientation="vertical">
			</ListView>

packages/PrintSpooler/res/menu/choose_printer_activity.xml

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			<?xml version="1.0" encoding="utf-8"?>
			<!-- Copyright (C) 2013 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.
			-->

			<menu xmlns:android="http://schemas.android.com/apk/res/android" >

			<item
			android:id="@+id/action_search"
			android:title="@string/search"
			android:icon="@*android:drawable/ic_menu_search_holo_light"
			android:actionViewClass="android.widget.SearchView"
			android:showAsAction="ifRoom"
			android:alphabeticShortcut="f"
			android:imeOptions="actionSearch">
			</item>

			</menu>

packages/PrintSpooler/res/values/strings.xml

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	@@ -58,6 +58,11 @@
	<!-- Title for the temporary dialog show while an app is generating a print job. [CHAR LIMIT=30] -->		<!-- Title for the temporary dialog show while an app is generating a print job. [CHAR LIMIT=30] -->
	<string name="generating_print_job">Generating print job</string>		<string name="generating_print_job">Generating print job</string>

			<!-- Choose printer activity -->

			<!-- Title for the share action bar menu item. [CHAR LIMIT=20] -->
			<string name="search">Search</string>

	<!-- Notifications -->		<!-- Notifications -->

	<!-- Template for the notificaiton label for a printing print job. [CHAR LIMIT=25] -->		<!-- Template for the notificaiton label for a printing print job. [CHAR LIMIT=25] -->

packages/PrintSpooler/src/com/android/printspooler/AvailablePrinterProvider.java

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			/*
			* Copyright (C) 2013 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.printspooler;

			import android.content.Context;
			import android.os.Handler;
			import android.os.Looper;
			import android.os.Message;
			import android.os.RemoteException;
			import android.print.IPrinterDiscoverySessionController;
			import android.print.IPrinterDiscoverySessionObserver;
			import android.print.PrinterId;
			import android.print.PrinterInfo;
			import android.util.ArraySet;
			import android.util.Log;

			import java.lang.ref.WeakReference;
			import java.util.ArrayList;
			import java.util.Iterator;
			import java.util.List;
			import java.util.Set;

			/**
			* This class is responsible to provide the available printers.
			* It starts and stops printer discovery and manages the returned
			* printers.
			*/
			public class AvailablePrinterProvider extends DataProvider<PrinterInfo>
			implements DataLoader {
			private static final String LOG_TAG = "AvailablePrinterProvider";

			private final Set<PrinterId> mPrinteIdsSet = new ArraySet<PrinterId>();

			private final List<PrinterInfo> mPrinters = new ArrayList<PrinterInfo>();

			private final List<PrinterId> mPriorityList;

			private PrinterDiscoverySession mDiscoverySession;

			public AvailablePrinterProvider(Context context, List<PrinterId> priorityList) {
			mDiscoverySession = new PrinterDiscoverySession(context.getMainLooper());
			mPriorityList = priorityList;
			}

			@Override
			public void startLoadData() {
			mDiscoverySession.open();
			}

			@Override
			public void stopLoadData() {
			mDiscoverySession.close();
			}

			@Override
			public int getItemCount() {
			return mPrinters.size();
			}

			@Override
			public int getItemIndex(PrinterInfo printer) {
			return mPrinters.indexOf(printer);
			}

			@Override
			public PrinterInfo getItemAt(int index) {
			return mPrinters.get(index);
			}

			public void refreshItem(int index) {
			PrinterInfo printer = getItemAt(index);
			mDiscoverySession.requestPrinterUpdate(printer.getId());
			}

			private void addPrinters(List<PrinterInfo> printers) {
			boolean addedPrinters = false;

			final int addedPrinterCount = printers.size();
			for (int i = 0; i < addedPrinterCount; i++) {
			PrinterInfo addedPrinter = printers.get(i);
			if (mPrinteIdsSet.add(addedPrinter.getId())) {
			mPrinters.add(addedPrinter);
			addedPrinters = true;
			}
			}

			if (addedPrinters) {
			notifyChanged();
			}
			}

			private void updatePrinters(List<PrinterInfo> printers) {
			boolean updatedPrinters = false;

			final int updatedPrinterCount = printers.size();
			for (int i = 0; i < updatedPrinterCount; i++) {
			PrinterInfo updatedPrinter = printers.get(i);
			if (mPrinteIdsSet.contains(updatedPrinter.getId())) {
			final int oldPrinterCount = mPrinters.size();
			for (int j = 0; j < oldPrinterCount; j++) {
			PrinterInfo oldPrinter = mPrinters.get(j);
			if (updatedPrinter.getId().equals(oldPrinter.getId())) {
			mPrinters.set(j, updatedPrinter);
			updatedPrinters = true;
			break;
			}
			}
			}
			}

			if (updatedPrinters) {
			notifyChanged();
			}
			}

			private void removePrinters(List<PrinterId> printers) {
			boolean removedPrinters = false;

			final int removedPrinterCount = printers.size();
			for (int i = 0; i < removedPrinterCount; i++) {
			PrinterId removedPrinter = printers.get(i);
			if (mPrinteIdsSet.contains(removedPrinter)) {
			mPrinteIdsSet.remove(removedPrinter);
			Iterator<PrinterInfo> iterator = mPrinters.iterator();
			while (iterator.hasNext()) {
			PrinterInfo oldPrinter = iterator.next();
			if (removedPrinter.equals(oldPrinter.getId())) {
			iterator.remove();
			break;
			}
			}
			}
			}

			if (removedPrinters) {
			notifyChanged();
			}
			}

			private final class PrinterDiscoverySession {

			private final Handler mHandler;

			private final IPrinterDiscoverySessionObserver mObserver;

			private IPrinterDiscoverySessionController mController;

			public PrinterDiscoverySession(Looper looper) {
			mHandler = new SessionHandler(looper);
			mObserver = new PrinterDiscoverySessionObserver(this);
			}

			public void open() {
			PrintSpooler.peekInstance().createPrinterDiscoverySession(
			mObserver);
			}

			public void close() {
			if (mController != null) {
			try {
			mController.close();
			} catch (RemoteException re) {
			Log.e(LOG_TAG, "Error closing printer discovery session", re);
			} finally {
			mController = null;
			}
			}
			}

			public void requestPrinterUpdate(PrinterId printerId) {
			if (mController != null) {
			try {
			mController.requestPrinterUpdate(printerId);
			} catch (RemoteException re) {
			Log.e(LOG_TAG, "Error requesting printer udpdate", re);
			}
			}
			}

			private final class SessionHandler extends Handler {
			public static final int MSG_SET_CONTROLLER = 1;
			public static final int MSG_ON_PRINTERS_ADDED = 2;
			public static final int MSG_ON_PRINTERS_REMOVED = 3;
			public static final int MSG_ON_PRINTERS_UPDATED = 4;

			public SessionHandler(Looper looper) {
			super(looper, null, false);
			}

			@Override
			@SuppressWarnings("unchecked")
			public void handleMessage(Message message) {
			switch (message.what) {
			case MSG_SET_CONTROLLER: {
			mController = (IPrinterDiscoverySessionController) message.obj;
			try {
			mController.open(mPriorityList);
			} catch (RemoteException e) {
			Log.e(LOG_TAG, "Error starting printer discovery");
			}
			} break;

			case MSG_ON_PRINTERS_ADDED: {
			List<PrinterInfo> printers = (List<PrinterInfo>) message.obj;
			addPrinters(printers);
			} break;

			case MSG_ON_PRINTERS_REMOVED: {
			List<PrinterId> printers = (List<PrinterId>) message.obj;
			removePrinters(printers);
			} break;

			case MSG_ON_PRINTERS_UPDATED: {
			List<PrinterInfo> printers = (List<PrinterInfo>) message.obj;
			updatePrinters(printers);
			} break;
			};
			}
			}
			}

			private static final class PrinterDiscoverySessionObserver
			extends IPrinterDiscoverySessionObserver.Stub {

			private final WeakReference<PrinterDiscoverySession> mWeakSession;

			public PrinterDiscoverySessionObserver(PrinterDiscoverySession session) {
			mWeakSession = new WeakReference<PrinterDiscoverySession>(session);
			}

			@Override
			public void setController(IPrinterDiscoverySessionController controller) {
			PrinterDiscoverySession sesison = mWeakSession.get();
			if (sesison != null) {
			sesison.mHandler.obtainMessage(
			PrinterDiscoverySession.SessionHandler.MSG_SET_CONTROLLER,
			controller).sendToTarget();
			}
			}

			@Override
			public void onPrintersAdded(List<PrinterInfo> printers) {
			PrinterDiscoverySession sesison = mWeakSession.get();
			if (sesison != null) {
			sesison.mHandler.obtainMessage(
			PrinterDiscoverySession.SessionHandler.MSG_ON_PRINTERS_ADDED,
			printers).sendToTarget();
			}
			}

			@Override
			public void onPrintersRemoved(List<PrinterId> printers) {
			PrinterDiscoverySession session = mWeakSession.get();
			if (session != null) {
			session.mHandler.obtainMessage(
			PrinterDiscoverySession.SessionHandler.MSG_ON_PRINTERS_REMOVED,
			printers).sendToTarget();
			}
			}

			@Override
			public void onPrintersUpdated(List<PrinterInfo> printers) {
			PrinterDiscoverySession session = mWeakSession.get();
			if (session != null) {
			session.mHandler.obtainMessage(
			PrinterDiscoverySession.SessionHandler.MSG_ON_PRINTERS_UPDATED,
			printers).sendToTarget();
			}
			}
			};
			}