Implement chat export using DialogFragment.

src/com/xabber/android/ui/ChatViewer.java

@@ -14,14 +14,10 @@
  */
 package com.xabber.android.ui;
 
-import java.io.File;
 import java.util.Collection;
 
-import android.app.Dialog;
 import android.content.Context;
 import android.content.Intent;
-import android.net.Uri;
-import android.os.AsyncTask;
 import android.os.Bundle;
 import android.text.ClipboardManager;
 import android.view.ContextMenu;
@@ -38,7 +34,6 @@ import android.widget.EditText;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.TextView.OnEditorActionListener;
-import android.widget.Toast;
 
 import com.xabber.android.data.ActivityManager;
 import com.xabber.android.data.Application;
@@ -67,9 +62,7 @@ import com.xabber.android.data.notification.NotificationManager;
 import com.xabber.android.data.roster.OnContactChangedListener;
 import com.xabber.android.ui.adapter.ChatViewerAdapter;
 import com.xabber.android.ui.adapter.OnTextChangedListener;
-import com.xabber.android.ui.dialog.ConfirmDialogListener;
-import com.xabber.android.ui.dialog.DialogBuilder;
-import com.xabber.android.ui.dialog.ExportChatDialogBuilder;
+import com.xabber.android.ui.dialog.ChatExportDialogFragment;
 import com.xabber.android.ui.helper.ManagedActivity;
 import com.xabber.android.ui.widget.PageSwitcher;
 import com.xabber.android.ui.widget.PageSwitcher.OnSelectListener;
@@ -87,8 +80,7 @@ import com.xabber.androiddev.R;
 public class ChatViewer extends ManagedActivity implements
 		View.OnClickListener, View.OnKeyListener, OnSelectListener,
 		OnChatChangedListener, OnContactChangedListener,
-		OnAccountChangedListener, OnEditorActionListener,
-		ConfirmDialogListener, OnTextChangedListener {
+		OnAccountChangedListener, OnEditorActionListener, OnTextChangedListener {
 
 	/**
 	 * Attention request.
@@ -133,8 +125,6 @@ public class ChatViewer extends ManagedActivity implements
 	private static final int CONTEXT_MENU_COPY_ID = 0x102;
 	private static final int CONTEXT_MENU_REMOVE_ID = 0x103;
 
-	private static final int DIALOG_EXPORT_CHAT_ID = 0x200;
-
 	private ChatViewerAdapter chatViewerAdapter;
 	private PageSwitcher pageSwitcher;
 
@@ -392,7 +382,9 @@ public class ChatViewer extends ManagedActivity implements
 					.setText("");
 			return true;
 		case OPTION_MENU_EXPORT_CHAT_ID:
-			showDialog(DIALOG_EXPORT_CHAT_ID);
+			ChatExportDialogFragment.newInstance(actionWithAccount,
+					actionWithUser).show(getSupportFragmentManager(),
+					"CHAT_EXPORT");
 			return true;
 		case OPTION_MENU_CALL_ATTENTION_ID:
 			try {
@@ -540,18 +532,6 @@ public class ChatViewer extends ManagedActivity implements
 		return false;
 	}
 
-	@Override
-	protected Dialog onCreateDialog(int id) {
-		super.onCreateDialog(id);
-		switch (id) {
-		case DIALOG_EXPORT_CHAT_ID:
-			return new ExportChatDialogBuilder(this, DIALOG_EXPORT_CHAT_ID,
-					this, actionWithAccount, actionWithUser).create();
-		default:
-			return null;
-		}
-	}
-
 	@Override
 	public void onClick(View view) {
 		switch (view.getId()) {
@@ -741,66 +721,6 @@ public class ChatViewer extends ManagedActivity implements
 		return false;
 	}
 
-	@Override
-	public void onAccept(DialogBuilder dialogBuilder) {
-		switch (dialogBuilder.getDialogId()) {
-		case DIALOG_EXPORT_CHAT_ID:
-			ExportChatDialogBuilder builder = (ExportChatDialogBuilder) dialogBuilder;
-			exportChat(builder);
-		}
-	}
-	
-	private void exportChat(ExportChatDialogBuilder dialogBuilder) {
-		//TODO: retain AsyncTask via retained fragment
-		new ChatExportAsyncTask(dialogBuilder).execute();
-	}
-	
-	private class ChatExportAsyncTask extends AsyncTask<Void, Void, File> {
-		private ExportChatDialogBuilder builder;
-		
-		public ChatExportAsyncTask(ExportChatDialogBuilder builder) {
-			this.builder = builder;
-		}
-		
-		@Override
-		protected File doInBackground(Void... params) {
-			File file = null;
-			try {
-				file = MessageManager.getInstance().exportChat(
-						actionWithAccount, actionWithUser, builder.getName());
-			} catch (NetworkException e) {
-				Application.getInstance().onError(e);
-			}
-			return file;
-		}
-		
-		@Override
-		public void onPostExecute(File result) {
-			if (result != null) {
-				if (builder.isSendChecked()) {
-					Intent intent = new Intent(android.content.Intent.ACTION_SEND);
-					intent.setType("text/plain");
-					Uri uri = Uri.fromFile(result);
-					intent.putExtra(android.content.Intent.EXTRA_STREAM, uri);
-					startActivity(Intent.createChooser(intent,
-							getString(R.string.export_chat)));
-				} else {
-					Toast.makeText(ChatViewer.this, R.string.export_chat_done,
-							Toast.LENGTH_LONG).show();
-				}
-			}
-		}
-		
-	}
-
-	@Override
-	public void onDecline(DialogBuilder dialogBuilder) {
-	}
-
-	@Override
-	public void onCancel(DialogBuilder dialogBuilder) {
-	}
-
 	private boolean selectChat(String account, String user) {
 		for (int position = 0; position < chatViewerAdapter.getCount(); position++)
 			if (((BaseEntity) chatViewerAdapter.getItem(position)).equals(

src/com/xabber/android/ui/dialog/ChatExportDialogFragment.java

+/**
+ * Copyright (c) 2013, Redsolution LTD. All rights reserved.
+ * 
+ * This file is part of Xabber project; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License, Version 3.
+ * 
+ * Xabber 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/.
+ */
+package com.xabber.android.ui.dialog;
+
+import java.io.File;
+
+import android.app.AlertDialog;
+import android.app.AlertDialog.Builder;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.support.v4.app.DialogFragment;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import com.xabber.android.data.Application;
+import com.xabber.android.data.NetworkException;
+import com.xabber.android.data.account.AccountManager;
+import com.xabber.android.data.message.MessageManager;
+import com.xabber.android.data.roster.RosterManager;
+import com.xabber.androiddev.R;
+
+public class ChatExportDialogFragment extends ConfirmDialogFragment {
+
+	private static final String ACCOUNT = "ACCOUNT";
+	private static final String USER = "USER";
+
+	/**
+	 * @param account
+	 * @param user
+	 * @return
+	 */
+	public static DialogFragment newInstance(String account, String user) {
+		return new ChatExportDialogFragment().putAgrument(ACCOUNT, account)
+				.putAgrument(USER, user);
+	}
+
+	private String account;
+	private String user;
+	private EditText nameView;
+	private CheckBox sendView;
+
+	@Override
+	protected Builder getBuilder() {
+		account = getArguments().getString(ACCOUNT);
+		user = getArguments().getString(USER);
+		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+		builder.setTitle(R.string.export_chat_title);
+		View layout = getActivity().getLayoutInflater().inflate(
+				R.layout.export_chat, null);
+		nameView = (EditText) layout.findViewById(R.id.name);
+		sendView = (CheckBox) layout.findViewById(R.id.send);
+		nameView.setText(getString(R.string.export_chat_mask, AccountManager
+				.getInstance().getVerboseName(account), RosterManager
+				.getInstance().getName(account, user)));
+		builder.setView(layout);
+		return builder;
+	}
+
+	@Override
+	protected boolean onPositiveClick() {
+		String name = nameView.getText().toString();
+		if ("".equals(name))
+			return false;
+		new ChatExportAsyncTask(account, user, name, sendView.isChecked())
+				.execute();
+		return true;
+	}
+
+	private class ChatExportAsyncTask extends AsyncTask<Void, Void, File> {
+
+		private final String account;
+		private final String user;
+		private final String name;
+		private final boolean send;
+
+		public ChatExportAsyncTask(String account, String user, String name,
+				boolean send) {
+			this.account = account;
+			this.user = user;
+			this.name = name;
+			this.send = send;
+		}
+
+		@Override
+		protected File doInBackground(Void... params) {
+			try {
+				return MessageManager.getInstance().exportChat(account, user,
+						name);
+			} catch (NetworkException e) {
+				Application.getInstance().onError(e);
+				return null;
+			}
+		}
+
+		@Override
+		public void onPostExecute(File result) {
+			if (result == null)
+				return;
+			// TODO: Use notification bar to notify about success.
+			if (send) {
+				Intent intent = new Intent(android.content.Intent.ACTION_SEND);
+				intent.setType("text/plain");
+				Uri uri = Uri.fromFile(result);
+				intent.putExtra(android.content.Intent.EXTRA_STREAM, uri);
+				startActivity(Intent.createChooser(intent,
+						getString(R.string.export_chat)));
+			} else {
+				Toast.makeText(getActivity(), R.string.export_chat_done,
+						Toast.LENGTH_LONG).show();
+			}
+		}
+
+	}
+}

src/com/xabber/android/ui/dialog/ExportChatDialogBuilder.java

-/**
- * Copyright (c) 2013, Redsolution LTD. All rights reserved.
- * 
- * This file is part of Xabber project; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License, Version 3.
- * 
- * Xabber 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/.
- */
-package com.xabber.android.ui.dialog;
-
-import android.app.Activity;
-import android.content.DialogInterface;
-import android.view.View;
-import android.widget.CheckBox;
-import android.widget.EditText;
-import android.widget.Toast;
-
-import com.xabber.android.data.account.AccountManager;
-import com.xabber.android.data.roster.RosterManager;
-import com.xabber.androiddev.R;
-
-public class ExportChatDialogBuilder extends ConfirmDialogBuilder {
-
-	private final EditText nameView;
-	private final CheckBox sendView;
-
-	public ExportChatDialogBuilder(Activity activity, int dialogId,
-			ConfirmDialogListener listener, String account, String user) {
-		super(activity, dialogId, listener);
-		setTitle(R.string.export_chat_title);
-		View layout = activity.getLayoutInflater().inflate(
-				R.layout.export_chat, null);
-		nameView = (EditText) layout.findViewById(R.id.name);
-		sendView = (CheckBox) layout.findViewById(R.id.send);
-		nameView.setText(activity.getString(R.string.export_chat_mask,
-				AccountManager.getInstance().getVerboseName(account),
-				RosterManager.getInstance().getName(account, user)));
-		setView(layout);
-	}
-
-	@Override
-	public void onAccept(DialogInterface dialog) {
-		if ("".equals(getName())) {
-			Toast.makeText(activity,
-					activity.getString(R.string.group_is_empty),
-					Toast.LENGTH_LONG).show();
-			return;
-		}
-		super.onAccept(dialog);
-	}
-
-	public String getName() {
-		return nameView.getText().toString();
-	}
-
-	public boolean isSendChecked() {
-		return sendView.isChecked();
-	}
-}