| /* |
| * Copyright (C) 2012 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 android.support.v7.view; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.os.Build; |
| import android.support.v4.view.ViewConfigurationCompat; |
| import android.support.v7.appcompat.R; |
| import android.view.ViewConfiguration; |
| |
| /** |
| * Allows components to query for various configuration policy decisions about how the action bar |
| * should lay out and behave on the current device. |
| * |
| * @hide |
| */ |
| public class ActionBarPolicy { |
| |
| private Context mContext; |
| |
| public static ActionBarPolicy get(Context context) { |
| return new ActionBarPolicy(context); |
| } |
| |
| private ActionBarPolicy(Context context) { |
| mContext = context; |
| } |
| |
| public int getMaxActionButtons() { |
| return mContext.getResources().getInteger(R.integer.abc_max_action_buttons); |
| } |
| |
| public boolean showsOverflowMenuButton() { |
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { |
| return true; |
| } else { |
| return !ViewConfigurationCompat.hasPermanentMenuKey(ViewConfiguration.get(mContext)); |
| } |
| } |
| |
| public int getEmbeddedMenuWidthLimit() { |
| return mContext.getResources().getDisplayMetrics().widthPixels / 2; |
| } |
| |
| public boolean hasEmbeddedTabs() { |
| final int targetSdk = mContext.getApplicationInfo().targetSdkVersion; |
| if (targetSdk >= Build.VERSION_CODES.JELLY_BEAN) { |
| return mContext.getResources().getBoolean(R.bool.abc_action_bar_embed_tabs); |
| } |
| |
| // The embedded tabs policy changed in Jellybean; give older apps the old policy |
| // so they get what they expect. |
| return mContext.getResources().getBoolean(R.bool.abc_action_bar_embed_tabs_pre_jb); |
| } |
| |
| public int getTabContainerHeight() { |
| TypedArray a = mContext.obtainStyledAttributes(null, R.styleable.ActionBar, |
| R.attr.actionBarStyle, 0); |
| int height = a.getLayoutDimension(R.styleable.ActionBar_height, 0); |
| Resources r = mContext.getResources(); |
| if (!hasEmbeddedTabs()) { |
| // Stacked tabs; limit the height |
| height = Math.min(height, |
| r.getDimensionPixelSize(R.dimen.abc_action_bar_stacked_max_height)); |
| } |
| a.recycle(); |
| return height; |
| } |
| |
| public boolean enableHomeButtonByDefault() { |
| // Older apps get the home button interaction enabled by default. |
| // Newer apps need to enable it explicitly. |
| return mContext.getApplicationInfo().targetSdkVersion < |
| Build.VERSION_CODES.ICE_CREAM_SANDWICH; |
| } |
| |
| public int getStackedTabMaxWidth() { |
| return mContext.getResources().getDimensionPixelSize( |
| R.dimen.abc_action_bar_stacked_tab_max_width); |
| } |
| } |