98 lines
3.3 KiB
Java
98 lines
3.3 KiB
Java
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.support.v7.internal.view;
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import android.content.Context;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.os.Build;
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import android.support.v4.view.ViewConfigurationCompat;
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import android.support.v7.appcompat.R;
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import android.view.ViewConfiguration;
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/**
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* Allows components to query for various configuration policy decisions about how the action bar
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* should lay out and behave on the current device.
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*
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* @hide
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*/
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public class ActionBarPolicy {
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private Context mContext;
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public static ActionBarPolicy get(Context context) {
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return new ActionBarPolicy(context);
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}
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private ActionBarPolicy(Context context) {
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mContext = context;
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}
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public int getMaxActionButtons() {
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return mContext.getResources().getInteger(R.integer.abc_max_action_buttons);
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}
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public boolean showsOverflowMenuButton() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
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return true;
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} else {
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return !ViewConfigurationCompat.hasPermanentMenuKey(ViewConfiguration.get(mContext));
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}
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}
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public int getEmbeddedMenuWidthLimit() {
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return mContext.getResources().getDisplayMetrics().widthPixels / 2;
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}
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public boolean hasEmbeddedTabs() {
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final int targetSdk = mContext.getApplicationInfo().targetSdkVersion;
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if (targetSdk >= Build.VERSION_CODES.JELLY_BEAN) {
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return mContext.getResources().getBoolean(R.bool.abc_action_bar_embed_tabs);
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}
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// The embedded tabs policy changed in Jellybean; give older apps the old policy
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// so they get what they expect.
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return mContext.getResources().getBoolean(R.bool.abc_action_bar_embed_tabs_pre_jb);
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}
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public int getTabContainerHeight() {
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TypedArray a = mContext.obtainStyledAttributes(null, R.styleable.ActionBar,
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R.attr.actionBarStyle, 0);
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int height = a.getLayoutDimension(R.styleable.ActionBar_height, 0);
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Resources r = mContext.getResources();
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if (!hasEmbeddedTabs()) {
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// Stacked tabs; limit the height
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height = Math.min(height,
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r.getDimensionPixelSize(R.dimen.abc_action_bar_stacked_max_height));
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}
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a.recycle();
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return height;
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}
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public boolean enableHomeButtonByDefault() {
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// Older apps get the home button interaction enabled by default.
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// Newer apps need to enable it explicitly.
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return mContext.getApplicationInfo().targetSdkVersion <
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Build.VERSION_CODES.ICE_CREAM_SANDWICH;
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}
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public int getStackedTabMaxWidth() {
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return mContext.getResources().getDimensionPixelSize(
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R.dimen.abc_action_bar_stacked_tab_max_width);
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}
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}
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