The Tor Browser / file comparison
comparison: mobile/android/base/util/Clipboard.java
mobile/android/base/util/Clipboard.java
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| 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/. */ | |
| 4 | |
| 5 package org.mozilla.gecko.util; | |
| 6 | |
| 7 import android.content.ClipData; | |
| 8 import android.content.Context; | |
| 9 import android.os.Build; | |
| 10 import android.util.Log; | |
| 11 | |
| 12 import org.mozilla.gecko.mozglue.generatorannotations.WrapElementForJNI; | |
| 13 | |
| 14 import java.util.concurrent.SynchronousQueue; | |
| 15 | |
| 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>(); | |
| 20 | |
| 21 private Clipboard() { | |
| 22 } | |
| 23 | |
| 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 } | |
| 31 | |
| 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. | |
| 37 | |
| 38 if (ThreadUtils.isOnUiThread() || ThreadUtils.isOnBackgroundThread()) { | |
| 39 return getClipboardTextImpl(); | |
| 40 } | |
| 41 | |
| 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 } | |
| 57 | |
| 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 } | |
| 81 | |
| 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 } | |
| 93 | |
| 94 android.text.ClipboardManager cm = getDeprecatedClipboardManager(mContext); | |
| 95 return cm.hasText(); | |
| 96 } | |
| 97 | |
| 98 /** | |
| 99 * Deletes all text from the clipboard. | |
| 100 */ | |
| 101 @WrapElementForJNI | |
| 102 public static void clearText() { | |
| 103 setText(null); | |
| 104 } | |
| 105 | |
| 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 } | |
| 111 | |
| 112 private static android.text.ClipboardManager getDeprecatedClipboardManager(Context context) { | |
| 113 return (android.text.ClipboardManager) mContext.getSystemService(Context.CLIPBOARD_SERVICE); | |
| 114 } | |
| 115 | |
| 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 } |
