TerminalActivity.java revision 00b00812cd0c883c2380065d7fda29512d5477f0
1/* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.terminal; 18 19import static com.android.terminal.Terminal.TAG; 20 21import android.app.Activity; 22import android.content.ComponentName; 23import android.content.Context; 24import android.content.Intent; 25import android.content.ServiceConnection; 26import android.os.Bundle; 27import android.os.IBinder; 28import android.os.Parcelable; 29import android.support.v4.view.PagerAdapter; 30import android.support.v4.view.PagerTitleStrip; 31import android.support.v4.view.ViewPager; 32import android.util.Log; 33import android.util.SparseArray; 34import android.view.Menu; 35import android.view.MenuItem; 36import android.view.View; 37import android.view.ViewGroup; 38 39/** 40 * Activity that displays all {@link Terminal} instances running in a bound 41 * {@link TerminalService}. 42 */ 43public class TerminalActivity extends Activity { 44 45 private TerminalService mService; 46 47 private ViewPager mPager; 48 private PagerTitleStrip mTitles; 49 50 private final ServiceConnection mServiceConn = new ServiceConnection() { 51 @Override 52 public void onServiceConnected(ComponentName name, IBinder service) { 53 mService = ((TerminalService.ServiceBinder) service).getService(); 54 55 final int size = mService.getTerminals().size(); 56 Log.d(TAG, "Bound to service with " + size + " active terminals"); 57 58 // Give ourselves at least one terminal session 59 if (size == 0) { 60 mService.createTerminal(); 61 } 62 63 // Bind UI to known terminals 64 mTermAdapter.notifyDataSetChanged(); 65 invalidateOptionsMenu(); 66 } 67 68 @Override 69 public void onServiceDisconnected(ComponentName name) { 70 mService = null; 71 throw new RuntimeException("Service in same process disconnected?"); 72 } 73 }; 74 75 private final PagerAdapter mTermAdapter = new PagerAdapter() { 76 private SparseArray<SparseArray<Parcelable>> 77 mSavedState = new SparseArray<SparseArray<Parcelable>>(); 78 79 @Override 80 public int getCount() { 81 if (mService != null) { 82 return mService.getTerminals().size(); 83 } else { 84 return 0; 85 } 86 } 87 88 @Override 89 public Object instantiateItem(ViewGroup container, int position) { 90 final TerminalView view = new TerminalView(container.getContext()); 91 view.setId(android.R.id.list); 92 93 final Terminal term = mService.getTerminals().valueAt(position); 94 view.setTerminal(term); 95 96 final SparseArray<Parcelable> state = mSavedState.get(term.key); 97 if (state != null) { 98 view.restoreHierarchyState(state); 99 } 100 101 container.addView(view); 102 return view; 103 } 104 105 @Override 106 public void destroyItem(ViewGroup container, int position, Object object) { 107 final TerminalView view = (TerminalView) object; 108 109 final int key = view.getTerminal().key; 110 SparseArray<Parcelable> state = mSavedState.get(key); 111 if (state == null) { 112 state = new SparseArray<Parcelable>(); 113 mSavedState.put(key, state); 114 } 115 view.saveHierarchyState(state); 116 117 view.setTerminal(null); 118 container.removeView(view); 119 } 120 121 @Override 122 public int getItemPosition(Object object) { 123 final TerminalView view = (TerminalView) object; 124 final int key = view.getTerminal().key; 125 final int index = mService.getTerminals().indexOfKey(key); 126 if (index == -1) { 127 return POSITION_NONE; 128 } else { 129 return index; 130 } 131 } 132 133 @Override 134 public boolean isViewFromObject(View view, Object object) { 135 return view == object; 136 } 137 138 @Override 139 public CharSequence getPageTitle(int position) { 140 return mService.getTerminals().valueAt(position).getTitle(); 141 } 142 }; 143 144 @Override 145 protected void onCreate(Bundle savedInstanceState) { 146 super.onCreate(savedInstanceState); 147 148 setContentView(R.layout.activity); 149 150 mPager = (ViewPager) findViewById(R.id.pager); 151 mTitles = (PagerTitleStrip) findViewById(R.id.titles); 152 153 mPager.setAdapter(mTermAdapter); 154 } 155 156 @Override 157 protected void onStart() { 158 super.onStart(); 159 bindService( 160 new Intent(this, TerminalService.class), mServiceConn, Context.BIND_AUTO_CREATE); 161 } 162 163 @Override 164 protected void onStop() { 165 super.onStop(); 166 unbindService(mServiceConn); 167 } 168 169 @Override 170 public boolean onCreateOptionsMenu(Menu menu) { 171 getMenuInflater().inflate(R.menu.activity, menu); 172 return true; 173 } 174 175 @Override 176 public boolean onPrepareOptionsMenu(Menu menu) { 177 super.onPrepareOptionsMenu(menu); 178 menu.findItem(R.id.menu_close_tab).setEnabled(mTermAdapter.getCount() > 0); 179 return true; 180 } 181 182 @Override 183 public boolean onOptionsItemSelected(MenuItem item) { 184 switch (item.getItemId()) { 185 case R.id.menu_new_tab: { 186 mService.createTerminal(); 187 mTermAdapter.notifyDataSetChanged(); 188 invalidateOptionsMenu(); 189 final int index = mService.getTerminals().size() - 1; 190 mPager.setCurrentItem(index, true); 191 return true; 192 } 193 case R.id.menu_close_tab: { 194 final int index = mPager.getCurrentItem(); 195 final int key = mService.getTerminals().keyAt(index); 196 mService.destroyTerminal(key); 197 mTermAdapter.notifyDataSetChanged(); 198 invalidateOptionsMenu(); 199 return true; 200 } 201 } 202 return false; 203 } 204} 205