1 files changed, 101 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ShareHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ShareHelper.java
new file mode 100644
index 000000000..27f026f80
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ShareHelper.java
@@ -0,0 +1,101 @@
+package org.sufficientlysecure.keychain.util;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.LabeledIntent;
+import android.content.pm.ResolveInfo;
+import android.os.Build;
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import android.os.Parcelable;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class ShareHelper {
+    Context mContext;
+
+    public ShareHelper(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Create Intent Chooser but exclude OK's EncryptActivity.
+     * <p/>
+     * Put together from some stackoverflow posts...
+     */
+    public Intent createChooserExcluding(Intent prototype, String title, String[] activityBlacklist) {
+        // Produced an empty list on Huawei U8860 with Android Version 4.0.3 and weird results on 2.3
+        // TODO: test on 4.1, 4.2, 4.3, only tested on 4.4
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            return Intent.createChooser(prototype, title);
+        }
+
+        List<LabeledIntent> targetedShareIntents = new ArrayList<LabeledIntent>();
+
+        List<ResolveInfo> resInfoList = mContext.getPackageManager().queryIntentActivities(prototype, 0);
+        List<ResolveInfo> resInfoListFiltered = new ArrayList<ResolveInfo>();
+        if (!resInfoList.isEmpty()) {
+            for (ResolveInfo resolveInfo : resInfoList) {
+                // do not add blacklisted ones
+                if (resolveInfo.activityInfo == null || Arrays.asList(activityBlacklist).contains(resolveInfo.activityInfo.name))
+                    continue;
+
+                resInfoListFiltered.add(resolveInfo);
+            }
+
+            if (!resInfoListFiltered.isEmpty()) {
+                // sorting for nice readability
+                Collections.sort(resInfoListFiltered, new Comparator<ResolveInfo>() {
+                    @Override
+                    public int compare(ResolveInfo first, ResolveInfo second) {
+                        String firstName = first.loadLabel(mContext.getPackageManager()).toString();
+                        String secondName = second.loadLabel(mContext.getPackageManager()).toString();
+                        return firstName.compareToIgnoreCase(secondName);
+                    }
+                });
+
+                // create the custom intent list
+                for (ResolveInfo resolveInfo : resInfoListFiltered) {
+                    Intent targetedShareIntent = (Intent) prototype.clone();
+                    targetedShareIntent.setPackage(resolveInfo.activityInfo.packageName);
+                    targetedShareIntent.setClassName(resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name);
+
+                    LabeledIntent lIntent = new LabeledIntent(targetedShareIntent,
+                            resolveInfo.activityInfo.packageName,
+                            resolveInfo.loadLabel(mContext.getPackageManager()),
+                            resolveInfo.activityInfo.icon);
+                    targetedShareIntents.add(lIntent);
+                }
+
+                // Create chooser with only one Intent in it
+                Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(targetedShareIntents.size() - 1), title);
+                // append all other Intents
+                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{}));
+                return chooserIntent;
+            }
+
+        }
+
+        // fallback to Android's default chooser
+        return Intent.createChooser(prototype, title);
+    }
+}