Themes: Add tm command line tool

# Copyright 2015 The CyanogenMod Project

#

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_MODULE := tm

include $(BUILD_JAVA_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := tm

LOCAL_SRC_FILES := tm

LOCAL_MODULE_CLASS := EXECUTABLES

LOCAL_MODULE_TAGS := optional

include $(BUILD_PREBUILT)

   Copyright (c) 2015, The CyanogenMod Project

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/*

**

** Copyright 2015, The CyanogenMod 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 com.android.commands.tm;

import android.content.pm.IPackageManager;

import android.content.pm.PackageInfo;

import android.content.pm.ParceledListSlice;

import android.content.pm.ThemeUtils;

import android.content.res.IThemeService;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.os.UserHandle;

import android.util.AndroidException;

import com.android.internal.os.BaseCommand;

import java.io.PrintStream;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class Tm extends BaseCommand {

    private static final String SYSTEM_THEME = "system";

    IThemeService mTs;

    IPackageManager mPm;

    /**

     * Command-line entry point.

     *

     * @param args The command-line arguments

     */

    public static void main(String[] args) {

        (new Tm()).run(args);

    }

    public void onShowUsage(PrintStream out) {

        List<String> components = ThemeUtils.getAllComponents();

        StringBuilder sb = new StringBuilder();

        sb.append("usage: tm [subcommand] [options]\n");

        sb.append("       tm list\n");

        sb.append("       tm apply <PACKAGE_NAME> [-c <COMPONENT> [-c <COMPONENT>] ...]\n");

        sb.append("       tm rebuild\n");

        sb.append("       tm process <PACKAGE_NAME>\n");

        sb.append("\n");

        sb.append("tm list: return a list of theme packages.\n");

        sb.append("\n");

        sb.append("tm apply: applies the components for the theme specified by PACKAGE_NAME.\n");

        sb.append("       [-c <COMPONENT> [-c <COMPONENT>] ...]\n");

        sb.append("       if no components are specified all components will be applied.\n");

        sb.append("       Valid components are:\n");

        for (String component : components) {

            sb.append("           ");

            sb.append(component);

            sb.append("\n");

        }

        sb.append("\n");

        sb.append("tm rebuild: rebuilds the resource cache.\n");

        sb.append("\n");

        sb.append("tm process: processes the theme resources for the theme specified by " +

                "PACKAGE_NAME.\n");

        out.println(sb.toString());

    }

    public void onRun() throws Exception {

        mTs = IThemeService.Stub.asInterface(ServiceManager.getService("themes"));

        if (mTs == null) {

            System.err.println(NO_SYSTEM_ERROR_CODE);

            throw new AndroidException("Can't connect to theme service; is the system running?");

        }

        mPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));

        if (mPm == null) {

            System.err.println(NO_SYSTEM_ERROR_CODE);

            throw new AndroidException("Can't connect to package manager; is the system running?");

        }

        String op = nextArgRequired();

        if (op.equals("list")) {

            runListThemePackages();

        } else if (op.equals("apply")) {

            runApplyTheme();

        } else if (op.equals("rebuild")) {

            runRebuildResourceCache();

        } else if (op.equals("process")) {

            runProcessTheme();

        } else {

            showError("Error: unknown command '" + op + "'");

            return;

        }

    }

    private void runListThemePackages() throws Exception {

        List<PackageInfo> packages = getInstalledPackages(mPm, 0, UserHandle.USER_OWNER);

        // there is always a "system" theme available

        System.out.println("package:system [theme]");

        for (PackageInfo info : packages) {

            if (info.isThemeApk || info.isLegacyIconPackApk) {

                System.out.print("package:");

                System.out.print(info.packageName);

                if (info.isThemeApk) {

                    System.out.println(" [theme]");

                } else {

                    System.out.println(" [icon pack]");

                }

            }

        }

    }

    private void runApplyTheme() throws Exception {

        String pkgName = nextArg();

        if (pkgName == null) {

            System.err.println("Error: didn't specify theme package to apply");

            return;

        }

        if (!SYSTEM_THEME.equals(pkgName)) {

            PackageInfo info = mPm.getPackageInfo(pkgName, 0, UserHandle.USER_OWNER);

            if (info == null) {

                System.err.println("Error: invalid package name");

                return;

            }

            if (!(info.isThemeApk || info.isLegacyIconPackApk)) {

                System.err.println("Error: package is not a theme or icon pack");

                return;

            }

        }

        Map<String, String> componentMap = new HashMap<String, String>();

        String opt;

        while ((opt=nextOption()) != null) {

            if (opt.equals("-c")) {

                componentMap.put(nextArgRequired(), pkgName);

            }

        }

        // No components specified so let's just try and apply EVERYTHING!

        if (componentMap.size() == 0) {

            List<String> components = ThemeUtils.getAllComponents();

            for (String component : components) {

                componentMap.put(component, pkgName);

            }

        }

        mTs.requestThemeChange(componentMap);

    }

    private void runRebuildResourceCache() throws Exception {

        mTs.rebuildResourceCache();

    }

    private void runProcessTheme() throws Exception {

        String pkgName = nextArg();

        if (pkgName == null) {

            System.err.println("Error: didn't specify theme package to apply");

            return;

        }

        PackageInfo info = mPm.getPackageInfo(pkgName, 0, UserHandle.USER_OWNER);

        if (info == null) {

            System.err.println("Error: invalid package name");

            return;

        }

        if (!info.isThemeApk) {

            System.err.println("Error: package is not a theme");

            return;

        }

        mTs.processThemeResources(pkgName);

    }

    @SuppressWarnings("unchecked")

    private List<PackageInfo> getInstalledPackages(IPackageManager pm, int flags, int userId)

            throws RemoteException {

        ParceledListSlice<PackageInfo> slice = pm.getInstalledPackages(flags, userId);

        return slice.getList();

    }

}

# Script to start "tm" on the device, which has a very rudimentary

# shell.

#

base=/system

export CLASSPATH=$base/framework/tm.jar

exec app_process $base/bin com.android.commands.tm.Tm "$@"