ContextThemeWrapper.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.view; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.ContextWrapper; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.Resources; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A ContextWrapper that allows you to modify the theme from what is in the 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * wrapped context. 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ContextThemeWrapper extends ContextWrapper { 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Context mBase; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mThemeResource; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Resources.Theme mTheme; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private LayoutInflater mInflater; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ContextThemeWrapper() { 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(null); 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ContextThemeWrapper(Context base, int themeres) { 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(base); 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = base; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mThemeResource = themeres; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override protected void attachBaseContext(Context newBase) { 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.attachBaseContext(newBase); 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBase = newBase; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override public void setTheme(int resid) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mThemeResource = resid; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project initializeTheme(); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override public Resources.Theme getTheme() { 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTheme != null) { 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTheme; 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mThemeResource == 0) { 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mThemeResource = com.android.internal.R.style.Theme; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project initializeTheme(); 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTheme; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override public Object getSystemService(String name) { 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (LAYOUT_INFLATER_SERVICE.equals(name)) { 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mInflater == null) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInflater = LayoutInflater.from(mBase).cloneInContext(this); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mInflater; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mBase.getSystemService(name); 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Called by {@link #setTheme} and {@link #getTheme} to apply a theme 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resource to the current Theme object. Can override to change the 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * default (simple) behavior. This method will not be called in multiple 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * threads simultaneously. 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param theme The Theme object being modified. 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param resid The theme style resource being applied to <var>theme</var>. 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param first Set to true if this is the first time a style is being 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * applied to <var>theme</var>. 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onApplyThemeResource(Resources.Theme theme, int resid, boolean first) { 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project theme.applyStyle(resid, true); 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void initializeTheme() { 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean first = mTheme == null; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (first) { 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTheme = getResources().newTheme(); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Resources.Theme theme = mBase.getTheme(); 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (theme != null) { 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTheme.setTo(theme); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onApplyThemeResource(mTheme, mThemeResource, first); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 104