src/com/android/launcher2/InstallShortcutReceiver.java - platform/packages/apps/Launcher2 - Git at Google

 /*
  * Copyright (C) 2008 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.launcher2;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
 import android.content.pm.PackageManager;
 import android.widget.Toast;

 import com.android.launcher.R;

 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;

 public class InstallShortcutReceiver extends BroadcastReceiver {
     public static final String ACTION_INSTALL_SHORTCUT =
             "com.android.launcher.action.INSTALL_SHORTCUT";
     public static final String NEW_APPS_PAGE_KEY = "apps.new.page";
     public static final String NEW_APPS_LIST_KEY = "apps.new.list";

     public static final int NEW_SHORTCUT_BOUNCE_DURATION = 450;
     public static final int NEW_SHORTCUT_STAGGER_DELAY = 75;

     private static final int INSTALL_SHORTCUT_SUCCESSFUL = 0;
     private static final int INSTALL_SHORTCUT_IS_DUPLICATE = -1;
     private static final int INSTALL_SHORTCUT_NO_SPACE = -2;

     // A mime-type representing shortcut data
     public static final String SHORTCUT_MIMETYPE =
             "com.android.launcher/shortcut";

     // The set of shortcuts that are pending install
     private static ArrayList<PendingInstallShortcutInfo> mInstallQueue =
             new ArrayList<PendingInstallShortcutInfo>();

     // Determines whether to defer installing shortcuts immediately until
     // processAllPendingInstalls() is called.
     private static boolean mUseInstallQueue = false;

     private static class PendingInstallShortcutInfo {
         Intent data;
         Intent launchIntent;
         String name;

         public PendingInstallShortcutInfo(Intent rawData, String shortcutName,
                 Intent shortcutIntent) {
             data = rawData;
             name = shortcutName;
             launchIntent = shortcutIntent;
         }
     }

     public void onReceive(Context context, Intent data) {
         if (!ACTION_INSTALL_SHORTCUT.equals(data.getAction())) {
             return;
         }

         Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
         if (intent == null) {
             return;
         }
         // This name is only used for comparisons and notifications, so fall back to activity name
         // if not supplied
         String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
         if (name == null) {
             try {
                 PackageManager pm = context.getPackageManager();
                 ActivityInfo info = pm.getActivityInfo(intent.getComponent(), 0);
                 name = info.loadLabel(pm).toString();
             } catch (PackageManager.NameNotFoundException nnfe) {
                 return;
             }
         }
         // Queue the item up for adding if launcher has not loaded properly yet
         boolean launcherNotLoaded = LauncherModel.getCellCountX() <= 0 ||
                 LauncherModel.getCellCountY() <= 0;

         PendingInstallShortcutInfo info = new PendingInstallShortcutInfo(data, name, intent);
         if (mUseInstallQueue || launcherNotLoaded) {
             mInstallQueue.add(info);
         } else {
             processInstallShortcut(context, info);
         }
     }

     static void enableInstallQueue() {
         mUseInstallQueue = true;
     }
     static void disableAndFlushInstallQueue(Context context) {
         mUseInstallQueue = false;
         flushInstallQueue(context);
     }
     static void flushInstallQueue(Context context) {
         Iterator<PendingInstallShortcutInfo> iter = mInstallQueue.iterator();
         while (iter.hasNext()) {
             processInstallShortcut(context, iter.next());
             iter.remove();
         }
     }

     private static void processInstallShortcut(Context context,
             PendingInstallShortcutInfo pendingInfo) {
         String spKey = LauncherApplication.getSharedPreferencesKey();
         SharedPreferences sp = context.getSharedPreferences(spKey, Context.MODE_PRIVATE);

         final Intent data = pendingInfo.data;
         final Intent intent = pendingInfo.launchIntent;
         final String name = pendingInfo.name;

         // Lock on the app so that we don't try and get the items while apps are being added
         LauncherApplication app = (LauncherApplication) context.getApplicationContext();
         final int[] result = {INSTALL_SHORTCUT_SUCCESSFUL};
         boolean found = false;
         synchronized (app) {
             final ArrayList<ItemInfo> items = LauncherModel.getItemsInLocalCoordinates(context);
             final boolean exists = LauncherModel.shortcutExists(context, name, intent);

             // Try adding to the workspace screens incrementally, starting at the default or center
             // screen and alternating between +1, -1, +2, -2, etc. (using ~ ceil(i/2f)*(-1)^(i-1))
             final int screen = Launcher.DEFAULT_SCREEN;
             for (int i = 0; i < (2 * Launcher.SCREEN_COUNT) + 1 && !found; ++i) {
                 int si = screen + (int) ((i / 2f) + 0.5f) * ((i % 2 == 1) ? 1 : -1);
                 if (0 <= si && si < Launcher.SCREEN_COUNT) {
                     found = installShortcut(context, data, items, name, intent, si, exists, sp,
                             result);
                 }
             }
         }

         // We only report error messages (duplicate shortcut or out of space) as the add-animation
         // will provide feedback otherwise
         if (!found) {
             if (result[0] == INSTALL_SHORTCUT_NO_SPACE) {
                 Toast.makeText(context, context.getString(R.string.completely_out_of_space),
                         Toast.LENGTH_SHORT).show();
             } else if (result[0] == INSTALL_SHORTCUT_IS_DUPLICATE) {
                 Toast.makeText(context, context.getString(R.string.shortcut_duplicate, name),
                         Toast.LENGTH_SHORT).show();
             }
         }
     }

     private static boolean installShortcut(Context context, Intent data, ArrayList<ItemInfo> items,
             String name, Intent intent, final int screen, boolean shortcutExists,
             final SharedPreferences sharedPrefs, int[] result) {
         int[] tmpCoordinates = new int[2];
         if (findEmptyCell(context, items, tmpCoordinates, screen)) {
             if (intent != null) {
                 if (intent.getAction() == null) {
                     intent.setAction(Intent.ACTION_VIEW);
                 } else if (intent.getAction().equals(Intent.ACTION_MAIN) &&
                         intent.getCategories() != null &&
                         intent.getCategories().contains(Intent.CATEGORY_LAUNCHER)) {
                     intent.addFlags(
                         Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
                 }

                 // By default, we allow for duplicate entries (located in
                 // different places)
                 boolean duplicate = data.getBooleanExtra(Launcher.EXTRA_SHORTCUT_DUPLICATE, true);
                 if (duplicate || !shortcutExists) {
                     // If the new app is going to fall into the same page as before, then just
                     // continue adding to the current page
                     int newAppsScreen = sharedPrefs.getInt(NEW_APPS_PAGE_KEY, screen);
                     Set<String> newApps = new HashSet<String>();
                     if (newAppsScreen == screen) {
                         newApps = sharedPrefs.getStringSet(NEW_APPS_LIST_KEY, newApps);
                     }
                     synchronized (newApps) {
                         newApps.add(intent.toUri(0).toString());
                     }
                     final Set<String> savedNewApps = newApps;
                     new Thread("setNewAppsThread") {
                         public void run() {
                             synchronized (savedNewApps) {
                                 sharedPrefs.edit()
                                            .putInt(NEW_APPS_PAGE_KEY, screen)
                                            .putStringSet(NEW_APPS_LIST_KEY, savedNewApps)
                                            .commit();
                             }
                         }
                     }.start();

                     // Update the Launcher db
                     LauncherApplication app = (LauncherApplication) context.getApplicationContext();
                     ShortcutInfo info = app.getModel().addShortcut(context, data,
                             LauncherSettings.Favorites.CONTAINER_DESKTOP, screen,
                             tmpCoordinates[0], tmpCoordinates[1], true);
                     if (info == null) {
                         return false;
                     }
                 } else {
                     result[0] = INSTALL_SHORTCUT_IS_DUPLICATE;
                 }

                 return true;
             }
         } else {
             result[0] = INSTALL_SHORTCUT_NO_SPACE;
         }

         return false;
     }

     private static boolean findEmptyCell(Context context, ArrayList<ItemInfo> items, int[] xy,
             int screen) {
         final int xCount = LauncherModel.getCellCountX();
         final int yCount = LauncherModel.getCellCountY();
         boolean[][] occupied = new boolean[xCount][yCount];

         ItemInfo item = null;
         int cellX, cellY, spanX, spanY;
         for (int i = 0; i < items.size(); ++i) {
             item = items.get(i);
             if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
                 if (item.screen == screen) {
                     cellX = item.cellX;
                     cellY = item.cellY;
                     spanX = item.spanX;
                     spanY = item.spanY;
                     for (int x = cellX; 0 <= x && x < cellX + spanX && x < xCount; x++) {
                         for (int y = cellY; 0 <= y && y < cellY + spanY && y < yCount; y++) {
                             occupied[x][y] = true;
                         }
                     }
                 }
             }
         }

         return CellLayout.findVacantCell(xy, 1, 1, xCount, yCount, occupied);
     }
 }
	/*
	* Copyright (C) 2008 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.launcher2;

	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.SharedPreferences;
	import android.content.pm.ActivityInfo;
	import android.content.pm.PackageManager;
	import android.widget.Toast;

	import com.android.launcher.R;

	import java.util.ArrayList;
	import java.util.HashSet;
	import java.util.Iterator;
	import java.util.Set;

	public class InstallShortcutReceiver extends BroadcastReceiver {
	public static final String ACTION_INSTALL_SHORTCUT =
	"com.android.launcher.action.INSTALL_SHORTCUT";
	public static final String NEW_APPS_PAGE_KEY = "apps.new.page";
	public static final String NEW_APPS_LIST_KEY = "apps.new.list";

	public static final int NEW_SHORTCUT_BOUNCE_DURATION = 450;
	public static final int NEW_SHORTCUT_STAGGER_DELAY = 75;

	private static final int INSTALL_SHORTCUT_SUCCESSFUL = 0;
	private static final int INSTALL_SHORTCUT_IS_DUPLICATE = -1;
	private static final int INSTALL_SHORTCUT_NO_SPACE = -2;

	// A mime-type representing shortcut data
	public static final String SHORTCUT_MIMETYPE =
	"com.android.launcher/shortcut";

	// The set of shortcuts that are pending install
	private static ArrayList<PendingInstallShortcutInfo> mInstallQueue =
	new ArrayList<PendingInstallShortcutInfo>();

	// Determines whether to defer installing shortcuts immediately until
	// processAllPendingInstalls() is called.
	private static boolean mUseInstallQueue = false;

	private static class PendingInstallShortcutInfo {
	Intent data;
	Intent launchIntent;
	String name;

	public PendingInstallShortcutInfo(Intent rawData, String shortcutName,
	Intent shortcutIntent) {
	data = rawData;
	name = shortcutName;
	launchIntent = shortcutIntent;
	}
	}

	public void onReceive(Context context, Intent data) {
	if (!ACTION_INSTALL_SHORTCUT.equals(data.getAction())) {
	return;
	}

	Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
	if (intent == null) {
	return;
	}
	// This name is only used for comparisons and notifications, so fall back to activity name
	// if not supplied
	String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
	if (name == null) {
	try {
	PackageManager pm = context.getPackageManager();
	ActivityInfo info = pm.getActivityInfo(intent.getComponent(), 0);
	name = info.loadLabel(pm).toString();
	} catch (PackageManager.NameNotFoundException nnfe) {
	return;
	}
	}
	// Queue the item up for adding if launcher has not loaded properly yet
	boolean launcherNotLoaded = LauncherModel.getCellCountX() <= 0 \|\|
	LauncherModel.getCellCountY() <= 0;

	PendingInstallShortcutInfo info = new PendingInstallShortcutInfo(data, name, intent);
	if (mUseInstallQueue \|\| launcherNotLoaded) {
	mInstallQueue.add(info);
	} else {
	processInstallShortcut(context, info);
	}
	}

	static void enableInstallQueue() {
	mUseInstallQueue = true;
	}
	static void disableAndFlushInstallQueue(Context context) {
	mUseInstallQueue = false;
	flushInstallQueue(context);
	}
	static void flushInstallQueue(Context context) {
	Iterator<PendingInstallShortcutInfo> iter = mInstallQueue.iterator();
	while (iter.hasNext()) {
	processInstallShortcut(context, iter.next());
	iter.remove();
	}
	}

	private static void processInstallShortcut(Context context,
	PendingInstallShortcutInfo pendingInfo) {
	String spKey = LauncherApplication.getSharedPreferencesKey();
	SharedPreferences sp = context.getSharedPreferences(spKey, Context.MODE_PRIVATE);

	final Intent data = pendingInfo.data;
	final Intent intent = pendingInfo.launchIntent;
	final String name = pendingInfo.name;

	// Lock on the app so that we don't try and get the items while apps are being added
	LauncherApplication app = (LauncherApplication) context.getApplicationContext();
	final int[] result = {INSTALL_SHORTCUT_SUCCESSFUL};
	boolean found = false;
	synchronized (app) {
	final ArrayList<ItemInfo> items = LauncherModel.getItemsInLocalCoordinates(context);
	final boolean exists = LauncherModel.shortcutExists(context, name, intent);

	// Try adding to the workspace screens incrementally, starting at the default or center
	// screen and alternating between +1, -1, +2, -2, etc. (using ~ ceil(i/2f)*(-1)^(i-1))
	final int screen = Launcher.DEFAULT_SCREEN;
	for (int i = 0; i < (2 * Launcher.SCREEN_COUNT) + 1 && !found; ++i) {
	int si = screen + (int) ((i / 2f) + 0.5f) * ((i % 2 == 1) ? 1 : -1);
	if (0 <= si && si < Launcher.SCREEN_COUNT) {
	found = installShortcut(context, data, items, name, intent, si, exists, sp,
	result);
	}
	}
	}

	// We only report error messages (duplicate shortcut or out of space) as the add-animation
	// will provide feedback otherwise
	if (!found) {
	if (result[0] == INSTALL_SHORTCUT_NO_SPACE) {
	Toast.makeText(context, context.getString(R.string.completely_out_of_space),
	Toast.LENGTH_SHORT).show();
	} else if (result[0] == INSTALL_SHORTCUT_IS_DUPLICATE) {
	Toast.makeText(context, context.getString(R.string.shortcut_duplicate, name),
	Toast.LENGTH_SHORT).show();
	}
	}
	}

	private static boolean installShortcut(Context context, Intent data, ArrayList<ItemInfo> items,
	String name, Intent intent, final int screen, boolean shortcutExists,
	final SharedPreferences sharedPrefs, int[] result) {
	int[] tmpCoordinates = new int[2];
	if (findEmptyCell(context, items, tmpCoordinates, screen)) {
	if (intent != null) {
	if (intent.getAction() == null) {
	intent.setAction(Intent.ACTION_VIEW);
	} else if (intent.getAction().equals(Intent.ACTION_MAIN) &&
	intent.getCategories() != null &&
	intent.getCategories().contains(Intent.CATEGORY_LAUNCHER)) {
	intent.addFlags(
	Intent.FLAG_ACTIVITY_NEW_TASK \| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
	}

	// By default, we allow for duplicate entries (located in
	// different places)
	boolean duplicate = data.getBooleanExtra(Launcher.EXTRA_SHORTCUT_DUPLICATE, true);
	if (duplicate \|\| !shortcutExists) {
	// If the new app is going to fall into the same page as before, then just
	// continue adding to the current page
	int newAppsScreen = sharedPrefs.getInt(NEW_APPS_PAGE_KEY, screen);
	Set<String> newApps = new HashSet<String>();
	if (newAppsScreen == screen) {
	newApps = sharedPrefs.getStringSet(NEW_APPS_LIST_KEY, newApps);
	}
	synchronized (newApps) {
	newApps.add(intent.toUri(0).toString());
	}
	final Set<String> savedNewApps = newApps;
	new Thread("setNewAppsThread") {
	public void run() {
	synchronized (savedNewApps) {
	sharedPrefs.edit()
	.putInt(NEW_APPS_PAGE_KEY, screen)
	.putStringSet(NEW_APPS_LIST_KEY, savedNewApps)
	.commit();
	}
	}
	}.start();

	// Update the Launcher db
	LauncherApplication app = (LauncherApplication) context.getApplicationContext();
	ShortcutInfo info = app.getModel().addShortcut(context, data,
	LauncherSettings.Favorites.CONTAINER_DESKTOP, screen,
	tmpCoordinates[0], tmpCoordinates[1], true);
	if (info == null) {
	return false;
	}
	} else {
	result[0] = INSTALL_SHORTCUT_IS_DUPLICATE;
	}

	return true;
	}
	} else {
	result[0] = INSTALL_SHORTCUT_NO_SPACE;
	}

	return false;
	}

	private static boolean findEmptyCell(Context context, ArrayList<ItemInfo> items, int[] xy,
	int screen) {
	final int xCount = LauncherModel.getCellCountX();
	final int yCount = LauncherModel.getCellCountY();
	boolean[][] occupied = new boolean[xCount][yCount];

	ItemInfo item = null;
	int cellX, cellY, spanX, spanY;
	for (int i = 0; i < items.size(); ++i) {
	item = items.get(i);
	if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
	if (item.screen == screen) {
	cellX = item.cellX;
	cellY = item.cellY;
	spanX = item.spanX;
	spanY = item.spanY;
	for (int x = cellX; 0 <= x && x < cellX + spanX && x < xCount; x++) {
	for (int y = cellY; 0 <= y && y < cellY + spanY && y < yCount; y++) {
	occupied[x][y] = true;
	}
	}
	}
	}
	}

	return CellLayout.findVacantCell(xy, 1, 1, xCount, yCount, occupied);
	}
	}