Add edit and delete functionality

* res/values/strings.xml: Add strings for `main_context_menu_edit' and
  `main_context_menu_delete'.

* src/ryuslash/org/dvdroid/AddDVDActivity.java (saveDVD): Renamed from
  `createDVD'.  When ID is greater than 0 update, otherwise create.

  (onCreate): Get ID from the `Intent' that was used to start this
  activity.  If ID is greater than 0, show known information in the
  inputs.

* src/ryuslash/org/dvdroid/DVDDataSource.java:
  (createValues):
  (updateDVD):
  (getById): New functions.

  (createDVD): Use `createValues' to get the values for the database.

  (deleteDVD): Add overloaded function that takes a `long', make the
  original function use this to delete a `DVD'.

* src/ryuslash/org/dvdroid/DVDroidActivity.java: Implement
  `ActionMode.Callback'.

  (onActivityResult): If REQUESTCODE is `2' reset the intent
  information so as not to confuse it during its next invocation.
  Finish action mode.

  (onActionItemClicked):
  (onCreateActionMode):
  (onDestroyActionMode):
  (onListItemClick):
  (onPrepareActionMode):
  (reloadList):
  (showEditDVD): New functions.

  (onCreate): Instantiate the ADD_DVD `Intent'.

1 files changed, 84 insertions, 8 deletions

diff --git a/src/ryuslash/org/dvdroid/DVDroidActivity.java b/src/ryuslash/org/dvdroid/DVDroidActivity.java
index 533bc62..07fe1fb 100644
--- a/src/ryuslash/org/dvdroid/DVDroidActivity.java
+++ b/src/ryuslash/org/dvdroid/DVDroidActivity.java
@@ -6,17 +6,22 @@ import android.app.ListActivity;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.view.ActionMode;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ArrayAdapter;
 import android.widget.EditText;
-import android.widget.Toast;
+import android.widget.ListView;
 
 public class DVDroidActivity extends ListActivity
+    implements ActionMode.Callback
 {
     private DVDDataSource datasource;
+    private Intent add_dvd;
+    private int saved_position = 0;
+    private ActionMode mode;
 
     private List<DVD> getData()
     {
@@ -29,14 +34,40 @@ public class DVDroidActivity extends ListActivity
                                     Intent data)
     {
         super.onActivityResult(requestCode, resultCode, data);
+
+        if (requestCode == 2) {
+            add_dvd.putExtra(SQLiteHelper.COLUMN_ID, 0l);
+
+            if (mode != null)
+                mode.finish();
+        }
+
         datasource.open();
+        reloadList();
+    }
 
-        ArrayAdapter<DVD> adapter = (ArrayAdapter<DVD>)getListAdapter();
-        List<DVD> dvds = getData();
+    @Override
+    public boolean onActionItemClicked(ActionMode mode, MenuItem item)
+    {
+        ArrayAdapter<DVD> adapter = (ArrayAdapter<DVD>) getListAdapter();
+        DVD dvd = adapter.getItem(saved_position);
 
-        adapter.clear();
-        adapter.addAll(dvds);
-        adapter.notifyDataSetChanged();
+        switch (item.getItemId()) {
+        case R.id.main_context_menu_edit:
+            showEditDVD(dvd.getId());
+            return true;
+
+        case R.id.main_context_menu_delete:
+            datasource.deleteDVD(dvd.getId());
+            reloadList();
+
+            if (mode != null)
+                mode.finish();
+
+            return true;
+        }
+
+        return false;
     }
 
     /** Called when the activity is first created. */
@@ -56,6 +87,16 @@ public class DVDroidActivity extends ListActivity
                                   android.R.layout.simple_list_item_1,
                                   values);
         setListAdapter(adapter);
+
+        add_dvd = new Intent(this, AddDVDActivity.class);
+    }
+
+    @Override
+    public boolean onCreateActionMode(ActionMode mode, Menu menu)
+    {
+        MenuInflater inflater = mode.getMenuInflater();
+        inflater.inflate(R.menu.main_context_menu, menu);
+        return true;
     }
 
     @Override
@@ -67,6 +108,20 @@ public class DVDroidActivity extends ListActivity
     }
 
     @Override
+    public void onDestroyActionMode(ActionMode mode)
+    {
+        saved_position = 0;
+    }
+
+    @Override
+    public void onListItemClick(ListView l, View v, int pos, long id)
+    {
+        saved_position = pos;
+        mode = startActionMode(this);
+        v.setSelected(true);
+    }
+
+    @Override
     public boolean onOptionsItemSelected(MenuItem item)
     {
         switch (item.getItemId()) {
@@ -86,17 +141,38 @@ public class DVDroidActivity extends ListActivity
     }
 
     @Override
+    public boolean onPrepareActionMode(ActionMode mode, Menu menu)
+    {
+        return false;
+    }
+
+    @Override
     protected void onResume()
     {
         datasource.open();
         super.onResume();
     }
 
+    private void reloadList()
+    {
+        ArrayAdapter<DVD> adapter = (ArrayAdapter<DVD>)getListAdapter();
+        List<DVD> dvds = getData();
+
+        adapter.clear();
+        adapter.addAll(dvds);
+        adapter.notifyDataSetChanged();
+    }
+
     public void showAddDVD()
     {
-        Intent intent = new Intent(this, AddDVDActivity.class);
+        datasource.close();
+        startActivityForResult(add_dvd, 1);
+    }
 
+    public void showEditDVD(long id)
+    {
         datasource.close();
-        startActivityForResult(intent, 1);
+        add_dvd.putExtra(SQLiteHelper.COLUMN_ID, id);
+        startActivityForResult(add_dvd, 2);
     }
 }