| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * 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.android.internal.app; |
| |
| import com.android.internal.view.menu.MenuBuilder; |
| import com.android.internal.view.menu.MenuPopupHelper; |
| import com.android.internal.view.menu.SubMenuBuilder; |
| import com.android.internal.widget.ActionBarContextView; |
| import com.android.internal.widget.ActionBarView; |
| |
| import android.animation.Animator; |
| import android.animation.Animator.AnimatorListener; |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.TimeInterpolator; |
| import android.app.ActionBar; |
| import android.app.Activity; |
| import android.app.Dialog; |
| import android.app.Fragment; |
| import android.app.FragmentTransaction; |
| import android.content.Context; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.view.ActionMode; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuInflater; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.Window; |
| import android.view.animation.DecelerateInterpolator; |
| import android.widget.FrameLayout; |
| import android.widget.LinearLayout; |
| import android.widget.SpinnerAdapter; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| |
| /** |
| * ActionBarImpl is the ActionBar implementation used |
| * by devices of all screen sizes. If it detects a compatible decor, |
| * it will split contextual modes across both the ActionBarView at |
| * the top of the screen and a horizontal LinearLayout at the bottom |
| * which is normally hidden. |
| */ |
| public class ActionBarImpl extends ActionBar { |
| private static final int NORMAL_VIEW = 0; |
| private static final int CONTEXT_VIEW = 1; |
| |
| private Context mContext; |
| private Activity mActivity; |
| private Dialog mDialog; |
| |
| private FrameLayout mContainerView; |
| private ActionBarView mActionView; |
| private ActionBarContextView mUpperContextView; |
| private LinearLayout mLowerContextView; |
| private View mContentView; |
| |
| private ArrayList<TabImpl> mTabs = new ArrayList<TabImpl>(); |
| |
| private TabImpl mSelectedTab; |
| private int mSavedTabPosition = INVALID_POSITION; |
| |
| private ActionMode mActionMode; |
| |
| private boolean mLastMenuVisibility; |
| private ArrayList<OnMenuVisibilityListener> mMenuVisibilityListeners = |
| new ArrayList<OnMenuVisibilityListener>(); |
| |
| private static final int CONTEXT_DISPLAY_NORMAL = 0; |
| private static final int CONTEXT_DISPLAY_SPLIT = 1; |
| |
| private static final int INVALID_POSITION = -1; |
| |
| private int mContextDisplayMode; |
| |
| final Handler mHandler = new Handler(); |
| |
| private Animator mCurrentAnim; |
| |
| private static final TimeInterpolator sFadeOutInterpolator = new DecelerateInterpolator(); |
| |
| final AnimatorListener[] mAfterAnimation = new AnimatorListener[] { |
| new AnimatorListener() { // NORMAL_VIEW |
| @Override |
| public void onAnimationStart(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (mLowerContextView != null) { |
| mLowerContextView.removeAllViews(); |
| } |
| mCurrentAnim = null; |
| hideAllExcept(NORMAL_VIEW); |
| } |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationRepeat(Animator animation) { |
| } |
| }, |
| new AnimatorListener() { // CONTEXT_VIEW |
| @Override |
| public void onAnimationStart(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mCurrentAnim = null; |
| hideAllExcept(CONTEXT_VIEW); |
| } |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationRepeat(Animator animation) { |
| } |
| } |
| }; |
| |
| final AnimatorListener mHideListener = new AnimatorListener() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (mContentView != null) { |
| mContentView.setTranslationY(0); |
| } |
| mContainerView.setVisibility(View.GONE); |
| mCurrentAnim = null; |
| } |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationRepeat(Animator animation) { |
| } |
| }; |
| |
| final AnimatorListener mShowListener = new AnimatorListener() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mCurrentAnim = null; |
| mContainerView.requestLayout(); |
| } |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| } |
| |
| @Override |
| public void onAnimationRepeat(Animator animation) { |
| } |
| }; |
| |
| public ActionBarImpl(Activity activity) { |
| mActivity = activity; |
| Window window = activity.getWindow(); |
| View decor = window.getDecorView(); |
| init(decor); |
| if (!mActivity.getWindow().hasFeature(Window.FEATURE_ACTION_BAR_OVERLAY)) { |
| mContentView = decor.findViewById(android.R.id.content); |
| } |
| } |
| |
| public ActionBarImpl(Dialog dialog) { |
| mDialog = dialog; |
| init(dialog.getWindow().getDecorView()); |
| } |
| |
| private void init(View decor) { |
| mContext = decor.getContext(); |
| mActionView = (ActionBarView) decor.findViewById(com.android.internal.R.id.action_bar); |
| mUpperContextView = (ActionBarContextView) decor.findViewById( |
| com.android.internal.R.id.action_context_bar); |
| mLowerContextView = (LinearLayout) decor.findViewById( |
| com.android.internal.R.id.lower_action_context_bar); |
| mContainerView = (FrameLayout) decor.findViewById( |
| com.android.internal.R.id.action_bar_container); |
| |
| if (mActionView == null || mUpperContextView == null || mContainerView == null) { |
| throw new IllegalStateException(getClass().getSimpleName() + " can only be used " + |
| "with a compatible window decor layout"); |
| } |
| |
| mActionView.setContextView(mUpperContextView); |
| mContextDisplayMode = mLowerContextView == null ? |
| CONTEXT_DISPLAY_NORMAL : CONTEXT_DISPLAY_SPLIT; |
| } |
| |
| public void addOnMenuVisibilityListener(OnMenuVisibilityListener listener) { |
| mMenuVisibilityListeners.add(listener); |
| } |
| |
| public void removeOnMenuVisibilityListener(OnMenuVisibilityListener listener) { |
| mMenuVisibilityListeners.remove(listener); |
| } |
| |
| public void dispatchMenuVisibilityChanged(boolean isVisible) { |
| if (isVisible == mLastMenuVisibility) { |
| return; |
| } |
| mLastMenuVisibility = isVisible; |
| |
| final int count = mMenuVisibilityListeners.size(); |
| for (int i = 0; i < count; i++) { |
| mMenuVisibilityListeners.get(i).onMenuVisibilityChanged(isVisible); |
| } |
| } |
| |
| @Override |
| public void setCustomView(int resId) { |
| setCustomView(LayoutInflater.from(mContext).inflate(resId, mActionView, false)); |
| } |
| |
| @Override |
| public void setDisplayUseLogoEnabled(boolean useLogo) { |
| setDisplayOptions(useLogo ? DISPLAY_USE_LOGO : 0, DISPLAY_USE_LOGO); |
| } |
| |
| @Override |
| public void setDisplayShowHomeEnabled(boolean showHome) { |
| setDisplayOptions(showHome ? DISPLAY_SHOW_HOME : 0, DISPLAY_SHOW_HOME); |
| } |
| |
| @Override |
| public void setDisplayHomeAsUpEnabled(boolean showHomeAsUp) { |
| setDisplayOptions(showHomeAsUp ? DISPLAY_HOME_AS_UP : 0, DISPLAY_HOME_AS_UP); |
| } |
| |
| @Override |
| public void setDisplayShowTitleEnabled(boolean showTitle) { |
| setDisplayOptions(showTitle ? DISPLAY_SHOW_TITLE : 0, DISPLAY_SHOW_TITLE); |
| } |
| |
| @Override |
| public void setDisplayShowCustomEnabled(boolean showCustom) { |
| setDisplayOptions(showCustom ? DISPLAY_SHOW_CUSTOM : 0, DISPLAY_SHOW_CUSTOM); |
| } |
| |
| @Override |
| public void setTitle(int resId) { |
| setTitle(mContext.getString(resId)); |
| } |
| |
| @Override |
| public void setSubtitle(int resId) { |
| setSubtitle(mContext.getString(resId)); |
| } |
| |
| public void setSelectedNavigationItem(int position) { |
| switch (mActionView.getNavigationMode()) { |
| case NAVIGATION_MODE_TABS: |
| selectTab(mTabs.get(position)); |
| break; |
| case NAVIGATION_MODE_LIST: |
| mActionView.setDropdownSelectedPosition(position); |
| break; |
| default: |
| throw new IllegalStateException( |
| "setSelectedNavigationIndex not valid for current navigation mode"); |
| } |
| } |
| |
| public void removeAllTabs() { |
| cleanupTabs(); |
| } |
| |
| private void cleanupTabs() { |
| if (mSelectedTab != null) { |
| selectTab(null); |
| } |
| mTabs.clear(); |
| mActionView.removeAllTabs(); |
| mSavedTabPosition = INVALID_POSITION; |
| } |
| |
| public void setTitle(CharSequence title) { |
| mActionView.setTitle(title); |
| } |
| |
| public void setSubtitle(CharSequence subtitle) { |
| mActionView.setSubtitle(subtitle); |
| } |
| |
| public void setDisplayOptions(int options) { |
| mActionView.setDisplayOptions(options); |
| } |
| |
| public void setDisplayOptions(int options, int mask) { |
| final int current = mActionView.getDisplayOptions(); |
| mActionView.setDisplayOptions((options & mask) | (current & ~mask)); |
| } |
| |
| public void setBackgroundDrawable(Drawable d) { |
| mContainerView.setBackgroundDrawable(d); |
| } |
| |
| public View getCustomView() { |
| return mActionView.getCustomNavigationView(); |
| } |
| |
| public CharSequence getTitle() { |
| return mActionView.getTitle(); |
| } |
| |
| public CharSequence getSubtitle() { |
| return mActionView.getSubtitle(); |
| } |
| |
| public int getNavigationMode() { |
| return mActionView.getNavigationMode(); |
| } |
| |
| public int getDisplayOptions() { |
| return mActionView.getDisplayOptions(); |
| } |
| |
| public ActionMode startActionMode(ActionMode.Callback callback) { |
| if (mActionMode != null) { |
| mActionMode.finish(); |
| } |
| |
| mUpperContextView.killMode(); |
| ActionMode mode = new ActionModeImpl(callback); |
| if (callback.onCreateActionMode(mode, mode.getMenu())) { |
| mode.invalidate(); |
| mUpperContextView.initForMode(mode); |
| animateTo(CONTEXT_VIEW); |
| if (mLowerContextView != null) { |
| // TODO animate this |
| mLowerContextView.setVisibility(View.VISIBLE); |
| } |
| mActionMode = mode; |
| return mode; |
| } |
| return null; |
| } |
| |
| private void configureTab(Tab tab, int position) { |
| final TabImpl tabi = (TabImpl) tab; |
| final ActionBar.TabListener callback = tabi.getCallback(); |
| |
| if (callback == null) { |
| throw new IllegalStateException("Action Bar Tab must have a Callback"); |
| } |
| |
| tabi.setPosition(position); |
| mTabs.add(position, tabi); |
| |
| final int count = mTabs.size(); |
| for (int i = position + 1; i < count; i++) { |
| mTabs.get(i).setPosition(i); |
| } |
| } |
| |
| @Override |
| public void addTab(Tab tab) { |
| addTab(tab, mTabs.isEmpty()); |
| } |
| |
| @Override |
| public void addTab(Tab tab, int position) { |
| addTab(tab, position, mTabs.isEmpty()); |
| } |
| |
| @Override |
| public void addTab(Tab tab, boolean setSelected) { |
| mActionView.addTab(tab, setSelected); |
| configureTab(tab, mTabs.size()); |
| if (setSelected) { |
| selectTab(tab); |
| } |
| } |
| |
| @Override |
| public void addTab(Tab tab, int position, boolean setSelected) { |
| mActionView.addTab(tab, position, setSelected); |
| configureTab(tab, position); |
| if (setSelected) { |
| selectTab(tab); |
| } |
| } |
| |
| @Override |
| public Tab newTab() { |
| return new TabImpl(); |
| } |
| |
| @Override |
| public void removeTab(Tab tab) { |
| removeTabAt(tab.getPosition()); |
| } |
| |
| @Override |
| public void removeTabAt(int position) { |
| int selectedTabPosition = mSelectedTab != null |
| ? mSelectedTab.getPosition() : mSavedTabPosition; |
| mActionView.removeTabAt(position); |
| mTabs.remove(position); |
| |
| final int newTabCount = mTabs.size(); |
| for (int i = position; i < newTabCount; i++) { |
| mTabs.get(i).setPosition(i); |
| } |
| |
| if (selectedTabPosition == position) { |
| selectTab(mTabs.isEmpty() ? null : mTabs.get(Math.max(0, position - 1))); |
| } |
| } |
| |
| @Override |
| public void selectTab(Tab tab) { |
| if (getNavigationMode() != NAVIGATION_MODE_TABS) { |
| mSavedTabPosition = tab != null ? tab.getPosition() : INVALID_POSITION; |
| return; |
| } |
| |
| final FragmentTransaction trans = mActivity.getFragmentManager().beginTransaction() |
| .disallowAddToBackStack(); |
| |
| if (mSelectedTab == tab) { |
| if (mSelectedTab != null) { |
| mSelectedTab.getCallback().onTabReselected(mSelectedTab, trans); |
| } |
| } else { |
| mActionView.setTabSelected(tab != null ? tab.getPosition() : Tab.INVALID_POSITION); |
| if (mSelectedTab != null) { |
| mSelectedTab.getCallback().onTabUnselected(mSelectedTab, trans); |
| } |
| mSelectedTab = (TabImpl) tab; |
| if (mSelectedTab != null) { |
| mSelectedTab.getCallback().onTabSelected(mSelectedTab, trans); |
| } |
| } |
| |
| if (!trans.isEmpty()) { |
| trans.commit(); |
| } |
| } |
| |
| @Override |
| public Tab getSelectedTab() { |
| return mSelectedTab; |
| } |
| |
| @Override |
| public int getHeight() { |
| return mActionView.getHeight(); |
| } |
| |
| @Override |
| public void show() { |
| if (mContainerView.getVisibility() == View.VISIBLE) { |
| return; |
| } |
| if (mCurrentAnim != null) { |
| mCurrentAnim.end(); |
| } |
| mContainerView.setVisibility(View.VISIBLE); |
| mContainerView.setAlpha(0); |
| AnimatorSet anim = new AnimatorSet(); |
| AnimatorSet.Builder b = anim.play(ObjectAnimator.ofFloat(mContainerView, "alpha", 1)); |
| if (mContentView != null) { |
| b.with(ObjectAnimator.ofFloat(mContentView, "translationY", |
| -mContainerView.getHeight(), 0)); |
| mContainerView.setTranslationY(-mContainerView.getHeight()); |
| b.with(ObjectAnimator.ofFloat(mContainerView, "translationY", 0)); |
| } |
| anim.addListener(mShowListener); |
| mCurrentAnim = anim; |
| anim.start(); |
| } |
| |
| @Override |
| public void hide() { |
| if (mCurrentAnim != null) { |
| mCurrentAnim.end(); |
| } |
| if (mContainerView.getVisibility() == View.GONE) { |
| return; |
| } |
| mContainerView.setAlpha(1); |
| AnimatorSet anim = new AnimatorSet(); |
| AnimatorSet.Builder b = anim.play(ObjectAnimator.ofFloat(mContainerView, "alpha", 0)); |
| if (mContentView != null) { |
| b.with(ObjectAnimator.ofFloat(mContentView, "translationY", |
| 0, -mContainerView.getHeight())); |
| b.with(ObjectAnimator.ofFloat(mContainerView, "translationY", |
| -mContainerView.getHeight())); |
| } |
| anim.addListener(mHideListener); |
| mCurrentAnim = anim; |
| anim.start(); |
| } |
| |
| public boolean isShowing() { |
| return mContainerView.getVisibility() == View.VISIBLE; |
| } |
| |
| private long animateTo(int viewIndex) { |
| show(); |
| |
| AnimatorSet set = new AnimatorSet(); |
| |
| final View targetChild = mContainerView.getChildAt(viewIndex); |
| targetChild.setVisibility(View.VISIBLE); |
| AnimatorSet.Builder b = set.play(ObjectAnimator.ofFloat(targetChild, "alpha", 1)); |
| |
| final int count = mContainerView.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final View child = mContainerView.getChildAt(i); |
| if (i == viewIndex) { |
| continue; |
| } |
| |
| if (child.getVisibility() != View.GONE) { |
| Animator a = ObjectAnimator.ofFloat(child, "alpha", 0); |
| a.setInterpolator(sFadeOutInterpolator); |
| b.with(a); |
| } |
| } |
| |
| set.addListener(mAfterAnimation[viewIndex]); |
| |
| mCurrentAnim = set; |
| set.start(); |
| return set.getDuration(); |
| } |
| |
| private void hideAllExcept(int viewIndex) { |
| final int count = mContainerView.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| mContainerView.getChildAt(i).setVisibility(i == viewIndex ? View.VISIBLE : View.GONE); |
| } |
| } |
| |
| /** |
| * @hide |
| */ |
| public class ActionModeImpl extends ActionMode implements MenuBuilder.Callback { |
| private ActionMode.Callback mCallback; |
| private MenuBuilder mMenu; |
| private WeakReference<View> mCustomView; |
| |
| public ActionModeImpl(ActionMode.Callback callback) { |
| mCallback = callback; |
| mMenu = new MenuBuilder(mActionView.getContext()) |
| .setDefaultShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| mMenu.setCallback(this); |
| } |
| |
| @Override |
| public MenuInflater getMenuInflater() { |
| return new MenuInflater(mContext); |
| } |
| |
| @Override |
| public Menu getMenu() { |
| return mMenu; |
| } |
| |
| @Override |
| public void finish() { |
| if (mActionMode != this) { |
| // Not the active action mode - no-op |
| return; |
| } |
| |
| mCallback.onDestroyActionMode(this); |
| mCallback = null; |
| animateTo(NORMAL_VIEW); |
| |
| // Clear out the context mode views after the animation finishes |
| mUpperContextView.closeMode(); |
| if (mLowerContextView != null && mLowerContextView.getVisibility() != View.GONE) { |
| // TODO Animate this |
| mLowerContextView.setVisibility(View.GONE); |
| } |
| mActionMode = null; |
| } |
| |
| @Override |
| public void invalidate() { |
| if (mCallback.onPrepareActionMode(this, mMenu)) { |
| // Refresh content in both context views |
| } |
| } |
| |
| @Override |
| public void setCustomView(View view) { |
| mUpperContextView.setCustomView(view); |
| mCustomView = new WeakReference<View>(view); |
| } |
| |
| @Override |
| public void setSubtitle(CharSequence subtitle) { |
| mUpperContextView.setSubtitle(subtitle); |
| } |
| |
| @Override |
| public void setTitle(CharSequence title) { |
| mUpperContextView.setTitle(title); |
| } |
| |
| @Override |
| public void setTitle(int resId) { |
| setTitle(mContext.getResources().getString(resId)); |
| } |
| |
| @Override |
| public void setSubtitle(int resId) { |
| setSubtitle(mContext.getResources().getString(resId)); |
| } |
| |
| @Override |
| public CharSequence getTitle() { |
| return mUpperContextView.getTitle(); |
| } |
| |
| @Override |
| public CharSequence getSubtitle() { |
| return mUpperContextView.getSubtitle(); |
| } |
| |
| @Override |
| public View getCustomView() { |
| return mCustomView != null ? mCustomView.get() : null; |
| } |
| |
| public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) { |
| if (mCallback != null) { |
| return mCallback.onActionItemClicked(this, item); |
| } else { |
| return false; |
| } |
| } |
| |
| public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) { |
| } |
| |
| public boolean onSubMenuSelected(SubMenuBuilder subMenu) { |
| if (mCallback == null) { |
| return false; |
| } |
| |
| if (!subMenu.hasVisibleItems()) { |
| return true; |
| } |
| |
| new MenuPopupHelper(mContext, subMenu).show(); |
| return true; |
| } |
| |
| public void onCloseSubMenu(SubMenuBuilder menu) { |
| } |
| |
| public void onMenuModeChange(MenuBuilder menu) { |
| if (mCallback == null) { |
| return; |
| } |
| invalidate(); |
| mUpperContextView.openOverflowMenu(); |
| } |
| } |
| |
| /** |
| * @hide |
| */ |
| public class TabImpl extends ActionBar.Tab { |
| private ActionBar.TabListener mCallback; |
| private Object mTag; |
| private Drawable mIcon; |
| private CharSequence mText; |
| private int mPosition; |
| private View mCustomView; |
| |
| @Override |
| public Object getTag() { |
| return mTag; |
| } |
| |
| @Override |
| public Tab setTag(Object tag) { |
| mTag = tag; |
| return this; |
| } |
| |
| public ActionBar.TabListener getCallback() { |
| return mCallback; |
| } |
| |
| @Override |
| public Tab setTabListener(ActionBar.TabListener callback) { |
| mCallback = callback; |
| return this; |
| } |
| |
| @Override |
| public View getCustomView() { |
| return mCustomView; |
| } |
| |
| @Override |
| public Tab setCustomView(View view) { |
| mCustomView = view; |
| return this; |
| } |
| |
| @Override |
| public Tab setCustomView(int layoutResId) { |
| return setCustomView(LayoutInflater.from(mContext).inflate(layoutResId, null)); |
| } |
| |
| @Override |
| public Drawable getIcon() { |
| return mIcon; |
| } |
| |
| @Override |
| public int getPosition() { |
| return mPosition; |
| } |
| |
| public void setPosition(int position) { |
| mPosition = position; |
| } |
| |
| @Override |
| public CharSequence getText() { |
| return mText; |
| } |
| |
| @Override |
| public Tab setIcon(Drawable icon) { |
| mIcon = icon; |
| return this; |
| } |
| |
| @Override |
| public Tab setIcon(int resId) { |
| return setIcon(mContext.getResources().getDrawable(resId)); |
| } |
| |
| @Override |
| public Tab setText(CharSequence text) { |
| mText = text; |
| return this; |
| } |
| |
| @Override |
| public Tab setText(int resId) { |
| return setText(mContext.getResources().getText(resId)); |
| } |
| |
| @Override |
| public void select() { |
| selectTab(this); |
| } |
| } |
| |
| @Override |
| public void setCustomView(View view) { |
| mActionView.setCustomNavigationView(view); |
| } |
| |
| @Override |
| public void setCustomView(View view, LayoutParams layoutParams) { |
| view.setLayoutParams(layoutParams); |
| mActionView.setCustomNavigationView(view); |
| } |
| |
| @Override |
| public void setListNavigationCallbacks(SpinnerAdapter adapter, OnNavigationListener callback) { |
| mActionView.setDropdownAdapter(adapter); |
| mActionView.setCallback(callback); |
| } |
| |
| @Override |
| public int getSelectedNavigationIndex() { |
| switch (mActionView.getNavigationMode()) { |
| case NAVIGATION_MODE_TABS: |
| return mSelectedTab != null ? mSelectedTab.getPosition() : -1; |
| case NAVIGATION_MODE_LIST: |
| return mActionView.getDropdownSelectedPosition(); |
| default: |
| return -1; |
| } |
| } |
| |
| @Override |
| public int getNavigationItemCount() { |
| switch (mActionView.getNavigationMode()) { |
| case NAVIGATION_MODE_TABS: |
| return mTabs.size(); |
| case NAVIGATION_MODE_LIST: |
| SpinnerAdapter adapter = mActionView.getDropdownAdapter(); |
| return adapter != null ? adapter.getCount() : 0; |
| default: |
| return 0; |
| } |
| } |
| |
| @Override |
| public int getTabCount() { |
| return mTabs.size(); |
| } |
| |
| @Override |
| public void setNavigationMode(int mode) { |
| final int oldMode = mActionView.getNavigationMode(); |
| switch (oldMode) { |
| case NAVIGATION_MODE_TABS: |
| mSavedTabPosition = getSelectedNavigationIndex(); |
| selectTab(null); |
| break; |
| } |
| mActionView.setNavigationMode(mode); |
| switch (mode) { |
| case NAVIGATION_MODE_TABS: |
| if (mSavedTabPosition != INVALID_POSITION) { |
| setSelectedNavigationItem(mSavedTabPosition); |
| mSavedTabPosition = INVALID_POSITION; |
| } |
| break; |
| } |
| } |
| |
| @Override |
| public Tab getTabAt(int index) { |
| return mTabs.get(index); |
| } |
| |
| /** |
| * This fragment is added when we're keeping a back stack in a tab switch |
| * transaction. We use it to change the selected tab in the action bar view |
| * when we back out. |
| */ |
| private class SwitchSelectedTabViewFragment extends Fragment { |
| private int mSelectedTabIndex; |
| |
| public SwitchSelectedTabViewFragment(int oldSelectedTab) { |
| mSelectedTabIndex = oldSelectedTab; |
| } |
| |
| @Override |
| public void onDetach() { |
| if (mSelectedTabIndex >= 0 && mSelectedTabIndex < getTabCount()) { |
| mActionView.setTabSelected(mSelectedTabIndex); |
| } |
| } |
| } |
| } |