Refactor the INSTALL_SHORTCUT broadcast code into ChromeShortcutManager

chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeShortcutManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeShortcutManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeShortcutManager.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeShortcutManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..1bc1e745ea3c4e4e7744cede679cb24fe8a6af9e
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeShortcutManager.java
@@ -0,0 +1,76 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.webapps;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.graphics.Bitmap;
+
+import org.chromium.base.ContextUtils;
+import org.chromium.chrome.browser.ChromeApplication;
+
+import java.util.List;
+
+/**
+ * This class handles the adding of shortcuts to the Android Home Screen.
+ */
+public class ChromeShortcutManager {
+    // There is no public string defining this intent so if Home changes the value, we
+    // have to update this string.
+    private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT";
+
+    private static ChromeShortcutManager sInstance;
+
+    /* Returns the singleton instance of ChromeShortcutManager, creating it if needed. */
+    public static ChromeShortcutManager getInstance() {
+        if (sInstance == null) {
+            sInstance = ((ChromeApplication) ContextUtils.getApplicationContext())
+                                .createChromeShortcutManager();
+        }
+        return sInstance;
+    }
+
+    /**
+     * Creates an intent that will add a shortcut to the home screen.
+     * @param title          Title of the shortcut.
+     * @param icon           Image that represents the shortcut.
+     * @param shortcutIntent Intent to fire when the shortcut is activated.
+     * @return Intent for the shortcut.
+     */
+    public static Intent createAddToHomeIntent(String title, Bitmap icon, Intent shortcutIntent) {
+        Intent i = new Intent(INSTALL_SHORTCUT);
+        i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
+        i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);
+        i.putExtra(Intent.EXTRA_SHORTCUT_ICON, icon);
+        return i;
+    }
+
+    /**
+     * Add a shortcut to the home screen.
+     * @param title          Title of the shortcut.
+     * @param icon           Image that represents the shortcut.
+     * @param shortcutIntent Intent to fire when the shortcut is activated.
+     */
+    public void addShortcutToHomeScreen(String title, Bitmap icon, Intent shortcutIntent) {
+        Intent intent = createAddToHomeIntent(title, icon, shortcutIntent);
+        ContextUtils.getApplicationContext().sendBroadcast(intent);
+    }
+
+    // TODO(crbug.com/635567): Fix this properly.
+    @SuppressLint("WrongConstant")
+    public boolean canAddShortcutToHomescreen() {
+        PackageManager pm = ContextUtils.getApplicationContext().getPackageManager();
+        Intent i = new Intent(INSTALL_SHORTCUT);
+        List<ResolveInfo> receivers =
+                pm.queryBroadcastReceivers(i, PackageManager.GET_INTENT_FILTERS);
+        return !receivers.isEmpty();
+    }
+
+    public boolean shouldShowToastWhenAddingShortcut() {
+        return true;
+    }
+}