98 lines
3.5 KiB
Java
98 lines
3.5 KiB
Java
/*
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* Copyright 2011 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 com.dougkeen.bart.actionbarcompat;
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import android.app.Activity;
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import android.os.Build;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuInflater;
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/**
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* An abstract class that handles some common action bar-related functionality in the app. This
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* class provides functionality useful for both phones and tablets, and does not require any Android
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* 3.0-specific features, although it uses them if available.
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*
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* Two implementations of this class are {@link ActionBarHelperBase} for a pre-Honeycomb version of
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* the action bar, and {@link ActionBarHelperHoneycomb}, which uses the built-in ActionBar features
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* in Android 3.0 and later.
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*/
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public abstract class ActionBarHelper {
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protected Activity mActivity;
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/**
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* Factory method for creating {@link ActionBarHelper} objects for a
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* given activity. Depending on which device the app is running, either a basic helper or
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* Honeycomb-specific helper will be returned.
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*/
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public static ActionBarHelper createInstance(Activity activity) {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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return new ActionBarHelperICS(activity);
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} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
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return new ActionBarHelperHoneycomb(activity);
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} else {
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return new ActionBarHelperBase(activity);
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}
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}
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protected ActionBarHelper(Activity activity) {
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mActivity = activity;
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}
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/**
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* Action bar helper code to be run in {@link Activity#onCreate(android.os.Bundle)}.
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*/
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public void onCreate(Bundle savedInstanceState) {
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}
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/**
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* Action bar helper code to be run in {@link Activity#onPostCreate(android.os.Bundle)}.
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*/
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public void onPostCreate(Bundle savedInstanceState) {
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}
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/**
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* Action bar helper code to be run in {@link Activity#onCreateOptionsMenu(android.view.Menu)}.
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*
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* NOTE: Setting the visibility of menu items in <em>menu</em> is not currently supported.
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*/
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public boolean onCreateOptionsMenu(Menu menu) {
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return true;
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}
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/**
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* Action bar helper code to be run in {@link Activity#onTitleChanged(CharSequence, int)}.
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*/
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protected void onTitleChanged(CharSequence title, int color) {
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}
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/**
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* Sets the indeterminate loading state of the item with ID {@link R.id.menu_refresh}.
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* (where the item ID was menu_refresh).
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*/
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public abstract void setRefreshActionItemState(boolean refreshing);
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/**
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* Returns a {@link MenuInflater} for use when inflating menus. The implementation of this
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* method in {@link ActionBarHelperBase} returns a wrapped menu inflater that can read
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* action bar metadata from a menu resource pre-Honeycomb.
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*/
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public MenuInflater getMenuInflater(MenuInflater superMenuInflater) {
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return superMenuInflater;
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}
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}
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