/* * 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.internal.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); } }