The Tor Browser: mobile/android/base/util/Clipboard.java@fc2d59ddac77

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 package org.mozilla.gecko.util;

     7 import android.content.ClipData;

     8 import android.content.Context;

     9 import android.os.Build;

    10 import android.util.Log;

    12 import org.mozilla.gecko.mozglue.generatorannotations.WrapElementForJNI;

    14 import java.util.concurrent.SynchronousQueue;

    16 public final class Clipboard {

    17     private static Context mContext;

    18     private final static String LOGTAG = "GeckoClipboard";

    19     private final static SynchronousQueue<String> sClipboardQueue = new SynchronousQueue<String>();

    21     private Clipboard() {

    22     }

    24     public static void init(final Context c) {

    25         if (mContext != null) {

    26             Log.w(LOGTAG, "Clipboard.init() called twice!");

    27             return;

    28         }

    29         mContext = c.getApplicationContext();

    30     }

    32     @WrapElementForJNI(stubName = "GetClipboardTextWrapper")

    33     public static String getText() {

    34         // If we're on the UI thread or the background thread, we have a looper on the thread

    35         // and can just call this directly. For any other threads, post the call to the

    36         // background thread.

    38         if (ThreadUtils.isOnUiThread() || ThreadUtils.isOnBackgroundThread()) {

    39             return getClipboardTextImpl();

    40         }

    42         ThreadUtils.postToBackgroundThread(new Runnable() {

    43             @Override

    44             public void run() {

    45                 String text = getClipboardTextImpl();

    46                 try {

    47                     sClipboardQueue.put(text != null ? text : "");

    48                 } catch (InterruptedException ie) {}

    49             }

    50         });

    51         try {

    52             return sClipboardQueue.take();

    53         } catch (InterruptedException ie) {

    54             return "";

    55         }

    56     }

    58     @WrapElementForJNI(stubName = "SetClipboardText")

    59     public static void setText(final CharSequence text) {

    60         ThreadUtils.postToBackgroundThread(new Runnable() {

    61             @Override

    62             @SuppressWarnings("deprecation")

    63             public void run() {

    64                 if (Build.VERSION.SDK_INT >= 11) {

    65                     android.content.ClipboardManager cm = getClipboardManager(mContext);

    66                     ClipData clip = ClipData.newPlainText("Text", text);

    67                     try {

    68                         cm.setPrimaryClip(clip);

    69                     } catch (NullPointerException e) {

    70                         // Bug 776223: This is a Samsung clipboard bug. setPrimaryClip() can throw

    71                         // a NullPointerException if Samsung's /data/clipboard directory is full.

    72                         // Fortunately, the text is still successfully copied to the clipboard.

    73                     }

    74                 } else {

    75                     android.text.ClipboardManager cm = getDeprecatedClipboardManager(mContext);

    76                     cm.setText(text);

    77                 }

    78             }

    79         });

    80     }

    82     /**

    83      * Returns true if the clipboard is nonempty, false otherwise.

    84      *

    85      * @return true if the clipboard is nonempty, false otherwise.

    86      */

    87     @WrapElementForJNI

    88     public static boolean hasText() {

    89         if (Build.VERSION.SDK_INT >= 11) {

    90             android.content.ClipboardManager cm = getClipboardManager(mContext);

    91             return cm.hasPrimaryClip();

    92         }

    94         android.text.ClipboardManager cm = getDeprecatedClipboardManager(mContext);

    95         return cm.hasText();

    96     }

    98     /**

    99      * Deletes all text from the clipboard.

   100      */

   101     @WrapElementForJNI

   102     public static void clearText() {

   103         setText(null);

   104     }

   106     private static android.content.ClipboardManager getClipboardManager(Context context) {

   107         // In API Level 11 and above, CLIPBOARD_SERVICE returns android.content.ClipboardManager,

   108         // which is a subclass of android.text.ClipboardManager.

   109         return (android.content.ClipboardManager) mContext.getSystemService(Context.CLIPBOARD_SERVICE);

   110     }

   112     private static android.text.ClipboardManager getDeprecatedClipboardManager(Context context) {

   113         return (android.text.ClipboardManager) mContext.getSystemService(Context.CLIPBOARD_SERVICE);

   114     }

   116     /* On some devices, access to the clipboard service needs to happen

   117      * on a thread with a looper, so this function requires a looper is

   118      * present on the thread. */

   119     @SuppressWarnings("deprecation")

   120     private static String getClipboardTextImpl() {

   121         if (Build.VERSION.SDK_INT >= 11) {

   122             android.content.ClipboardManager cm = getClipboardManager(mContext);

   123             if (cm.hasPrimaryClip()) {

   124                 ClipData clip = cm.getPrimaryClip();

   125                 if (clip != null) {

   126                     ClipData.Item item = clip.getItemAt(0);

   127                     return item.coerceToText(mContext).toString();

   128                 }

   129             }

   130         } else {

   131             android.text.ClipboardManager cm = getDeprecatedClipboardManager(mContext);

   132             if (cm.hasText()) {

   133                 return cm.getText().toString();

   134             }

   135         }

   136         return null;

   137     }

   138 }

The Tor Browser / file revision