com.granita.tasks.SyncSettingsActivity.java Source code

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Here is the source code for com.granita.tasks.SyncSettingsActivity.java

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/*
 * Copyright (C) 2013 Marten Gajda <marten@dmfs.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.granita.tasks;

import com.granita.provider.tasks.TaskContract;
import com.granita.tasks.utils.LgBugfixActionBarActivity;

import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.view.View;
import android.widget.Button;

/**
 * This extends the {@link FragmentActivity} for displaying the list of synced or visible task-providers. It displays the visible providers when it is created.
 * 
 * @author Arjun Naik<arjun@arjunnaik.in>
 */
public class SyncSettingsActivity extends LgBugfixActionBarActivity {
    private FragmentManager mManager;
    private SettingsListFragment mCurrentFrag;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_settings);
        // Show the Up button in the action bar.
        setupActionBar();

        mManager = getSupportFragmentManager();
        showVisibleListsFragment();

    }

    /**
     * This function displays the list of providers which can be visible or hidden in {@link TaskListFragment}.
     */
    public void showVisibleListsFragment() {
        SettingsListFragment syncedListFragment = new SettingsListFragment();
        Bundle args = new Bundle();
        args.putStringArray(SettingsListFragment.LIST_STRING_PARAMS, new String[] { "1" });
        args.putInt(SettingsListFragment.LIST_FRAGMENT_LAYOUT, R.layout.fragment_visiblelist);
        args.putString(SettingsListFragment.LIST_SELECTION_ARGS, TaskContract.TaskLists.SYNC_ENABLED + "=?");
        args.putString(SettingsListFragment.COMPARE_COLUMN_NAME, TaskContract.TaskLists.VISIBLE);
        args.putBoolean(SettingsListFragment.LIST_ONDETACH_SAVE, true);
        syncedListFragment.setArguments(args);
        mManager.beginTransaction().replace(R.id.visible_task_list_fragment, syncedListFragment).commit();
        mCurrentFrag = syncedListFragment;
        showActionBarTitle(R.string.visible_task_lists);
    }

    /**
     * This function displays the list of providers which can be synced.
     */
    public void showSyncedListsFragment() {
        SettingsListFragment syncedListFragment = new SettingsListFragment();
        Bundle args = new Bundle();
        args.putStringArray(SettingsListFragment.LIST_STRING_PARAMS, null);
        args.putInt(SettingsListFragment.LIST_FRAGMENT_LAYOUT, R.layout.fragment_synced_task_list);
        args.putString(SettingsListFragment.LIST_SELECTION_ARGS, null);
        args.putString(SettingsListFragment.COMPARE_COLUMN_NAME, TaskContract.TaskLists.SYNC_ENABLED);
        args.putBoolean(SettingsListFragment.LIST_ONDETACH_SAVE, false);
        syncedListFragment.setArguments(args);
        mManager.beginTransaction().replace(R.id.visible_task_list_fragment, syncedListFragment).commit();
        mCurrentFrag = syncedListFragment;
        showActionBarTitle(R.string.synced_task_lists);
    }

    /**
     * Set up the {@link android.app.ActionBar}, if the API is available.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void setupActionBar() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void showActionBarTitle(int titleRes) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getSupportActionBar().setTitle(titleRes);
        }
    }

    /**
     * This function is a handler for the {@link Button} which is present in the layout loaded by {@link SettingsListFragment}. When this button is clicked the
     * {@link SyncSettingsActivity} instructs the {@link SettingsListFragment} to save the current modification and then loads a {@link SettingsListFragment}
     * which shows the list the syncable task-providers.
     * 
     * @param v
     *            Reference to the {@link Button} which was clicked is passed as a {@link View} object.
     */
    public void showSyncedList(View v) {
        mCurrentFrag.saveListState();
        // Call a function to indicate to the fragment that the state change to the list have been saved(clear the hashmap).
        mCurrentFrag.doneSaveListState();
        showSyncedListsFragment();
    }

    /**
     * This function is a handler for the {@link Button} which is present in the layout loaded by {@link SettingsListFragment}. When this button is clicked the
     * {@link SyncSettingsActivity} instructs the {@link SettingsListFragment} to save the current modification and then loads a {@link SettingsListFragment}
     * which shows the list the displayable task-providers.
     * 
     * @param v
     *            Reference to the {@link Button} which was clicked is passed as a {@link View} object.
     */
    public void onSaveUpdated(View v) {
        mCurrentFrag.saveListState();
        showVisibleListsFragment();

    }

    /**
     * This function is a handler for the {@link Button} which is present in the layout loaded by {@link SettingsListFragment}. When this button is clicked the
     * list showing the syncable task-providers is displayed.
     * 
     * @param v
     *            Reference to the {@link Button} which was clicked is passed as a {@link View} object.
     */
    public void onCancelUpdated(View v) {
        showVisibleListsFragment();
    }

}