add Share button to install history viewer

closes #1484
closes #1224
closes #70

app/src/main/java/org/fdroid/fdroid/views/InstallHistoryActivity.java

@@ -21,9 +21,11 @@
 package org.fdroid.fdroid.views;
 
 import android.content.ContentResolver;
+import android.content.Intent;
 import android.database.Cursor;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
+import android.support.v4.app.ShareCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
@@ -31,6 +33,8 @@ import android.view.MenuItem;
 import android.widget.TextView;
 import org.apache.commons.io.IOUtils;
 import org.fdroid.fdroid.R;
+import org.fdroid.fdroid.data.Repo;
+import org.fdroid.fdroid.data.RepoProvider;
 import org.fdroid.fdroid.installer.InstallHistoryService;
 
 import java.io.FileDescriptor;
@@ -81,6 +85,26 @@ public class InstallHistoryActivity extends AppCompatActivity {
     public boolean onOptionsItemSelected(MenuItem item) {
 
         switch (item.getItemId()) {
+            case R.id.menu_share:
+                StringBuilder stringBuilder = new StringBuilder();
+                stringBuilder.append("Repos:\n");
+                for (Repo repo : RepoProvider.Helper.all(this)) {
+                    if (repo.inuse) {
+                        stringBuilder.append("* ");
+                        stringBuilder.append(repo.address);
+                        stringBuilder.append('\n');
+                    }
+                }
+                ShareCompat.IntentBuilder intentBuilder = ShareCompat.IntentBuilder.from(this)
+                        .setStream(InstallHistoryService.LOG_URI)
+                        .setSubject(getString(R.string.send_history_csv, getString(R.string.app_name)))
+                        .setChooserTitle(R.string.send_install_history)
+                        .setText(stringBuilder.toString())
+                        .setType("text/plain");
+                Intent intent = intentBuilder.getIntent();
+                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+                startActivity(intent);
+                break;
             case R.id.menu_delete:
                 getContentResolver().delete(InstallHistoryService.LOG_URI, null, null);
                 TextView textView = findViewById(R.id.text);

app/src/main/res/menu/install_history.xml

@@ -1,7 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+            android:id="@+id/menu_share"
+            android:icon="@drawable/ic_share_white"
+            android:title="@string/menu_share"
+            app:showAsAction="ifRoom"/>
     <item
             android:id="@+id/menu_delete"
-            android:icon="@android:drawable/ic_delete"
+            android:icon="@drawable/ic_delete_white"
             android:title="@string/delete"/>
 </menu>

app/src/main/res/values/strings.xml

@@ -24,6 +24,8 @@
     <string name="hide_all_notifications_summary">Prevent all actions from showing in the status bar and notification
         drawer.
     </string>
+    <string name="send_install_history">Send Install History</string>
+    <string name="send_history_csv">%s install history as CSV file</string>
     <string name="install_history">Install history</string>
     <string name="install_history_summary">View the private log of all installs and uninstalls</string>
     <string name="keep_install_history">Keep install history</string>