com.momock.outlet.tab.FragmentTabOutlet.java Source code

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Here is the source code for com.momock.outlet.tab.FragmentTabOutlet.java

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/*******************************************************************************
 * Copyright 2012 momock.com
 * 
 * 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.momock.outlet.tab;

import android.os.Handler;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.TabHost;
import android.widget.TabHost.TabContentFactory;

import com.momock.data.IDataList;
import com.momock.holder.FragmentHolder;
import com.momock.holder.FragmentTabHolder;
import com.momock.outlet.IPlug;
import com.momock.outlet.Outlet;
import com.momock.util.Logger;

public class FragmentTabOutlet extends Outlet implements ITabOutlet {
    FragmentTabHolder target;

    public void attach(FragmentTabHolder tabHolder) {
        Logger.check(tabHolder != null, "Parameter tabHolder cannot be null!");
        this.target = tabHolder;
        TabHost tabHost = target.getTabHost();
        final IDataList<IPlug> plugs = getPlugs();
        tabHost.setup();
        tabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {

            @Override
            public void onTabChanged(String tabId) {
                new Handler().post(new Runnable() {

                    @Override
                    public void run() {
                        int index = target.getTabHost().getCurrentTab();
                        int id = target.getTabContentId();
                        ITabPlug plug = (ITabPlug) plugs.getItem(index);
                        setActivePlug(plug);

                        FragmentManager fm = target.getFragmentManager();
                        if (fm != null && plug.getContent() instanceof FragmentHolder) {
                            try {
                                FragmentTransaction ft = fm.beginTransaction();
                                FragmentHolder fh = (FragmentHolder) plug.getContent();
                                ft.replace(id, fh.getFragment());
                                ft.commit();
                                fm.executePendingTransactions();
                            } catch (Exception e) {
                                Logger.error(e);
                            }
                        }
                    }

                });
            }
        });
        for (int i = 0; i < plugs.getItemCount(); i++) {
            final ITabPlug plug = (ITabPlug) plugs.getItem(i);
            if (plug.getContent() instanceof FragmentHolder) {
                TabHost.TabSpec spec = tabHost.newTabSpec("" + i);
                target.setTabIndicator(spec, plug);
                spec.setContent(new TabContentFactory() {

                    @Override
                    public View createTabContent(String tag) {
                        View v = new View(target.getTabHost().getContext());
                        v.setMinimumWidth(0);
                        v.setMinimumHeight(0);
                        return v;
                    }

                });
                tabHost.addTab(spec);
                if (getActivePlug() == plug)
                    tabHost.setCurrentTab(i);
            }
        }
    }

    @Override
    public void onActivate(IPlug plug) {
        if (((ITabPlug) plug).getContent() != null && target != null) {
            TabHost tabHost = target.getTabHost();
            tabHost.setCurrentTab(getIndexOf(plug));
        }
    }
}