net.peterkuterna.android.apps.devoxxsched.ui.MapActivity.java Source code

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Here is the source code for net.peterkuterna.android.apps.devoxxsched.ui.MapActivity.java

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/*
 * Copyright 2011 Peter Kuterna
 *
 * 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 net.peterkuterna.android.apps.devoxxsched.ui;

import net.peterkuterna.android.apps.devoxxsched.R;
import net.peterkuterna.android.apps.devoxxsched.ui.phone.SessionDetailActivity;
import net.peterkuterna.android.apps.devoxxsched.ui.phone.SessionsActivity;
import net.peterkuterna.android.apps.devoxxsched.util.UIUtils;
import android.app.FragmentBreadCrumbs;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;

import com.google.android.maps.MapView;

/**
 * A multi-pane activity to display a Google ({@link MapView}.
 */
public class MapActivity extends BaseMultiPaneMapActivity
        implements View.OnClickListener, FragmentManager.OnBackStackChangedListener {

    private FragmentManager mFragmentManager;
    private FragmentBreadCrumbs mFragmentBreadCrumbs;

    private MapFragment mMapFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_map);

        mFragmentManager = getSupportFragmentManager();
        if (UIUtils.isHoneycombTablet(this)) {
            mFragmentBreadCrumbs = (FragmentBreadCrumbs) findViewById(R.id.breadcrumbs);
            mFragmentBreadCrumbs.setActivity(this);
        }
        mFragmentManager.addOnBackStackChangedListener(this);

        final FragmentManager fm = getSupportFragmentManager();
        mMapFragment = (MapFragment) fm.findFragmentByTag("map");
        if (mMapFragment == null) {
            mMapFragment = new MapFragment();
            mMapFragment.setArguments(intentToFragmentArguments(getIntent()));
            fm.beginTransaction().add(R.id.root_container, mMapFragment, "map").commit();
        }

        final View closeButton = findViewById(R.id.close_button);
        if (closeButton != null) {
            closeButton.setOnClickListener(new View.OnClickListener() {
                public void onClick(View view) {
                    clearBackStack(getSupportFragmentManager());
                    showHideDetailAndPan(false);
                }
            });
        }

        updateBreadCrumb();
    }

    @Override
    public FragmentReplaceInfo onSubstituteFragmentForActivityLaunch(String activityClassName) {
        if (findViewById(R.id.map_detail_popup) != null) {
            if (SessionsActivity.class.getName().equals(activityClassName)) {
                mFragmentManager.popBackStack();
                showHideDetailAndPan(true);
                return new FragmentReplaceInfo(SessionsFragment.class, "sessions",
                        R.id.fragment_container_map_detail);
            } else if (SessionDetailActivity.class.getName().equals(activityClassName)) {
                showHideDetailAndPan(true);
                return new FragmentReplaceInfo(SessionDetailFragment.class, "session_detail",
                        R.id.fragment_container_map_detail);
            }
        }
        return null;
    }

    @Override
    public void onBeforeCommitReplaceFragment(FragmentManager fm, FragmentTransaction ft, Fragment fragment) {
        super.onBeforeCommitReplaceFragment(fm, ft, fragment);
        if (fragment instanceof SessionsFragment) {
            fm.popBackStack();
        } else if (fragment instanceof SessionDetailFragment) {
            if (fm.getBackStackEntryCount() > 0) {
                fm.popBackStack();
            }
            ft.addToBackStack(null);
        }
        updateBreadCrumb();
    }

    /**
     * Handler for the breadcrumb parent.
     */
    public void onClick(View view) {
        mFragmentManager.popBackStack();
    }

    private void clearBackStack(FragmentManager fm) {
        while (fm.getBackStackEntryCount() > 0) {
            fm.popBackStackImmediate();
        }
    }

    public void onBackStackChanged() {
        updateBreadCrumb();
    }

    private void showHideDetailAndPan(boolean show) {
        View detailPopup = findViewById(R.id.map_detail_popup);
        if (show != (detailPopup.getVisibility() == View.VISIBLE)) {
            detailPopup.setVisibility(show ? View.VISIBLE : View.GONE);
            final int orientation = getResources().getConfiguration().orientation;
            if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                mMapFragment.panLeft(show ? 0.25f : -0.25f);
            } else {
                mMapFragment.panTop(show ? -0.25f : 0.25f);
            }
        }
    }

    public void updateBreadCrumb() {
        if (UIUtils.isHoneycombTablet(this)) {
            final String title = getString(R.string.title_sessions);
            final String detailTitle = getString(R.string.title_session_detail);

            if (mFragmentManager.getBackStackEntryCount() >= 1) {
                mFragmentBreadCrumbs.setParentTitle(title, title, this);
                mFragmentBreadCrumbs.setTitle(detailTitle, detailTitle);
            } else {
                mFragmentBreadCrumbs.setParentTitle(null, null, null);
                mFragmentBreadCrumbs.setTitle(title, title);
            }
        }
    }

}