Java tutorial
/** * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3, 29 June 2007; * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.gnu.org/licenses/lgpl-3.0.txt * * 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. */ /** * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3, 29 June 2007; * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.gnu.org/licenses/lgpl-3.0.txt * * 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 org.kevoree.platform.android.boot.view; import android.support.v4.app.ActionBar; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTransaction; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import org.kevoree.android.framework.service.events.IntentListener; import org.kevoree.platform.android.boot.utils.KObservable; import org.kevoree.platform.android.ui.KevoreeAndroidUIScreen; import java.util.LinkedList; /** * Created by jed * User: jedartois@gmail.com * Date: 08/03/12 * Time: 15:10 */ public class ManagerUI extends KObservable<ManagerUI> implements KevoreeAndroidUIScreen, ActionBar.TabListener { private static final String TAG = ManagerUI.class.getSimpleName(); private LinkedList<ActionBar.Tab> tabs = new LinkedList<ActionBar.Tab>(); private FragmentActivity ctx = null; private int selectedTab = 0; private int ktab = -1; public ManagerUI(FragmentActivity context) { this.ctx = context; ctx.getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); } /** * this method is charge of restoring views during a rotation of the screen */ public void restoreViews(FragmentActivity newctx) { if (ctx.getSupportActionBar().getTabAt(selectedTab) == null) { selectedTab = ktab; } ctx.getSupportActionBar().removeAllTabs(); newctx.getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); ctx = newctx; LinkedList<ActionBar.Tab> backup = new LinkedList<ActionBar.Tab>(); backup.addAll(tabs); tabs.clear(); for (ActionBar.Tab tab : backup) { Log.i(TAG, "Restore " + tab.getText()); // if exist remove parent View contentView = (View) tab.getTag(); if (contentView.getParent() != null) { ((ViewGroup) contentView.getParent()).removeView(contentView); } LinearLayout tabLayout = (LinearLayout) contentView; int childcount = tabLayout.getChildCount(); for (int i = 0; i < childcount; i++) { View v = tabLayout.getChildAt(i); if (v != null) { // remove link to linearlayout if (v.getParent() != null) { ((ViewGroup) v.getParent()).removeView(v); } addToGroup(tab.getText().toString(), v); } } } try { ctx.getSupportActionBar().setSelectedNavigationItem(selectedTab); } catch (Exception e) { // ignore } } @Override public void addToGroup(String groupKey, View view) { if (groupKey == null || view == null) { return; } ActionBar.Tab idTab = getTabById(groupKey); Log.i("KevoreeBoot", "Add" + groupKey + "-" + idTab + "-" + view); if (idTab == null) { idTab = ctx.getSupportActionBar().newTab(); idTab.setText(groupKey); idTab.setTabListener(this); ctx.getSupportActionBar().addTab(idTab); LinearLayout tabLayout = new LinearLayout(ctx); idTab.setTag(tabLayout); tabs.add(idTab); } ((LinearLayout) idTab.getTag()).addView(view); if (selectedTab == idTab.getPosition()) { ctx.setContentView((View) idTab.getTag()); ktab = selectedTab; } /// Set the screen content to an the groupkey notifyObservers(this); } @Override public void removeView(View view) { if (view == null) { return; } Log.i("Request remove view", ""); LinkedList<ActionBar.Tab> newtabs = new LinkedList<ActionBar.Tab>(); for (ActionBar.Tab tab : tabs) { LinearLayout tabLayout = (LinearLayout) tab.getTag(); int childcount = tabLayout.getChildCount(); for (int i = 0; i < childcount; i++) { View v = tabLayout.getChildAt(i); if (v != null) { if (v.equals(view)) { tabLayout.removeView(view); } } } Log.i("Remove view " + tab.getText(), " " + ((LinearLayout) tab.getTag()).getChildCount()); if (((LinearLayout) tab.getTag()).getChildCount() == 0) { if (tab.getPosition() == selectedTab) { selectedTab = ktab; } ctx.getSupportActionBar().removeTab(tab); } else { newtabs.add(tab); } } tabs.clear(); tabs.addAll(newtabs); notifyObservers(this); } @Override public void addIntentListener(IntentListener listener) { // empty we don't care here } @Override public void removeIntentListener(IntentListener listener) { } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } public ActionBar.Tab getTabById(String id) { for (ActionBar.Tab t : tabs) { if (t.getText().equals(id)) { return t; } } return null; } @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { View contentView = (View) tab.getTag(); if (tab.getTag() != null) { if (contentView.getParent() != null) { ((ViewGroup) contentView.getParent()).removeView(contentView); } ctx.setContentView(contentView); // if you don't call this method some views can behave // weirdly after setContentView(View) doRequestLayout(contentView); selectedTab = tab.getPosition(); } } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } public FragmentActivity getCtx() { return ctx; } /** * Call requestLayout() recursively on each child view * contained into this view if it has any. Otherwise * the call will only be made on the given view * * @param view a View object */ private void doRequestLayout(View view) { ViewGroup vg = null; if (view instanceof ViewGroup) { vg = (ViewGroup) view; for (int i = 0; i < vg.getChildCount(); i++) { doRequestLayout(vg.getChildAt(i)); } } else { view.requestLayout(); } } }