src/com/morphoss/acal/widget/DateTimeDialog.java

   1 /*
   2  * Copyright (C) 2011 Morphoss Ltd
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.morphoss.acal.widget;
  20
  21 import java.util.ArrayList;
  22
  23 import android.app.Dialog;
  24 import android.content.Context;
  25 import android.content.SharedPreferences;
  26 import android.content.SharedPreferences.Editor;
  27 import android.preference.PreferenceManager;
  28 import android.view.View;
  29 import android.view.View.OnClickListener;
  30 import android.widget.AdapterView;
  31 import android.widget.AdapterView.OnItemSelectedListener;
  32 import android.widget.Button;
  33 import android.widget.CheckBox;
  34 import android.widget.CompoundButton;
  35 import android.widget.CompoundButton.OnCheckedChangeListener;
  36 import android.widget.DatePicker;
  37 import android.widget.DatePicker.OnDateChangedListener;
  38 import android.widget.Spinner;
  39 import android.widget.TimePicker;
  40 import android.widget.TimePicker.OnTimeChangedListener;
  41
  42 import com.morphoss.acal.R;
  43 import com.morphoss.acal.acaltime.AcalDateTime;
  44 import com.morphoss.acal.acaltime.AcalDateTimeFormatter;
  45
  46 /**
  47  * A dialog for selecting a date, with a time and a timezone (or perhaps floating, or just as a date)
  48  * @author Morphoss Ltd
  49  */
  50
  51 public class DateTimeDialog extends Dialog
  52                 implements      OnClickListener, OnTimeChangedListener, OnDateChangedListener,
  53                                         OnCheckedChangeListener, OnItemSelectedListener
  54 {
  55
  56         private static final String     TZPREFNAME      = "recentTimeZone-";
  57         private Context context;
  58         private DateTimeSetListener dialogListener;
  59
  60         private Button setButton;
  61         private Button cancelButton;
  62         private DatePicker datePicker;
  63         private TimePicker timePicker;
  64         private CheckBox dateOnlyCheckBox;
  65         private Spinner timeZoneSpinner;
  66         private TimeZoneListAdapter tzListAdapter;
  67         private boolean allowDateVsDateTimeSwitching = true;
  68
  69         private int oldTimeZoneWas = 0;
  70
  71         private ArrayList<String> recentZones;
  72
  73         private AcalDateTime currentDateTime;
  74         private final boolean use24HourTime;
  75         private final boolean allowTimeZoneSetting;
  76         private SharedPreferences       prefs;
  77
  78         /**
  79          * A dialog for selecting a date, with a time and a timezone (or perhaps floating, or just as a date)
  80          * @param context A UIcontext.
  81          * @param dateTimeValue The initial setting
  82          * @param twentyFourHourTime Whether to use am/pm or 24hour time
  83          * @param allowDateTimeSwitching Whether the user can control whether this is a pure date.
  84          * @param allowTimeZones Whether the user can select a time zone.
  85          * @param listener The listener for the result.
  86          */
  87         public DateTimeDialog(Context context, AcalDateTime dateTimeValue, boolean twentyFourHourTime,
  88                         boolean allowDateTimeSwitching, boolean allowTimeZones, DateTimeSetListener listener )  {
  89         super(context);
  90         this.context = context;
  91         this.dialogListener = listener;
  92
  93         use24HourTime = twentyFourHourTime;
  94         setContentView(R.layout.datetime_dialog);
  95         allowDateVsDateTimeSwitching = allowDateTimeSwitching;
  96         allowTimeZoneSetting = allowTimeZones;
  97
  98         recentZones = new ArrayList<String>(10);
  99         prefs = PreferenceManager.getDefaultSharedPreferences(context);
 100         String recentZonePref;
 101                 for( int i=0; i<10; i++ ) {
 102                 recentZonePref = prefs.getString(TZPREFNAME+i, null);
 103                 if ( recentZonePref != null ) {
 104                         recentZones.add(recentZonePref);
 105                 }
 106         }
 107
 108         currentDateTime = (dateTimeValue == null ? new AcalDateTime() : dateTimeValue.clone());
 109         populateLayout();
 110         }
 111
 112
 113         private void populateLayout() {
 114
 115         setButton = (Button)this.findViewById(R.id.DateTimeSetButton);
 116         cancelButton = (Button)this.findViewById(R.id.DateTimeCancelButton);
 117         setButton.setOnClickListener(this);
 118         cancelButton.setOnClickListener(this);
 119
 120         datePicker = (DatePicker) this.findViewById(R.id.datePicker);
 121         datePicker.init(currentDateTime.getYear(), currentDateTime.getMonth() - 1, currentDateTime.getMonthDay(),this);
 122
 123         timePicker = (TimePicker) this.findViewById(R.id.timePicker);
 124         timePicker.setIs24HourView(use24HourTime);
 125         timePicker.setCurrentHour((int) currentDateTime.getHour());
 126         timePicker.setCurrentMinute((int) currentDateTime.getMinute());
 127         timePicker.setOnTimeChangedListener(this);
 128         timePicker.setAddStatesFromChildren(true);
 129
 130         dateOnlyCheckBox = (CheckBox) this.findViewById(R.id.DateTimeIsDate);
 131
 132         timeZoneSpinner = (Spinner) this.findViewById(R.id.DateTimeZoneSelect);
 133         tzListAdapter = new TimeZoneListAdapter(this.context, currentDateTime.getTimeZone(), recentZones);
 134         timeZoneSpinner.setAdapter(tzListAdapter);
 135         timeZoneSpinner.setOnItemSelectedListener(this);
 136
 137         if ( allowDateVsDateTimeSwitching ) {
 138                 dateOnlyCheckBox.setChecked(currentDateTime.isDate());
 139                 dateOnlyCheckBox.setOnCheckedChangeListener(this);
 140         }
 141         else {
 142                 dateOnlyCheckBox.setVisibility(View.GONE);
 143                 if ( currentDateTime.isDate() ) {
 144                         timePicker.setVisibility(View.GONE);
 145                         timeZoneSpinner.setVisibility(View.GONE);
 146                 }
 147         }
 148         if ( !allowTimeZoneSetting )
 149                 timeZoneSpinner.setVisibility(View.GONE);
 150
 151         updateLayout();
 152     }
 153
 154
 155         private void updateLayout() {
 156                 timePicker.setEnabled(!dateOnlyCheckBox.isChecked());
 157                 timeZoneSpinner.setSelection(dateOnlyCheckBox.isChecked() ? 0 : tzListAdapter.getPositionOf(currentDateTime.getTimeZoneId()));
 158         timeZoneSpinner.setEnabled(!dateOnlyCheckBox.isChecked());
 159         this.setTitle(AcalDateTimeFormatter.fmtFull(currentDateTime,use24HourTime));
 160         }
 161
 162
 163         private void toggleIsDate( boolean isDate ) {
 164                 if ( isDate ) oldTimeZoneWas = timeZoneSpinner.getSelectedItemPosition();
 165                 currentDateTime.setAsDate(isDate);
 166                 if ( !isDate ) {
 167                         currentDateTime.setTimeZone(tzListAdapter.getTzId(oldTimeZoneWas));
 168                         timeZoneSpinner.setSelection(oldTimeZoneWas);
 169                 }
 170                 updateLayout();
 171         }
 172
 173         @Override
 174         public void onClick(View v) {
 175                 if (v == setButton) {
 176
 177                         fixFocusAndApply();
 178
 179                         dialogListener.onDateTimeSet(currentDateTime);
 180
 181                         if ( !currentDateTime.isFloating() ) {
 182                                 String currentZone = currentDateTime.getTimeZoneId();
 183                                 Editor e = prefs.edit();
 184                                 e.putString(TZPREFNAME+0, currentZone);
 185                                 for( int i=0,j=1; i<recentZones.size() && j<10; i++) {
 186                                         if ( !recentZones.get(i).equals(currentZone) ) {
 187                                                 e.putString(TZPREFNAME+j, recentZones.get(i));
 188                                                 j++;
 189                                         }
 190                                 }
 191                                 e.commit();
 192                         }
 193                 }
 194
 195                 this.dismiss();
 196         }
 197
 198
 199         @Override
 200         public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
 201                 if ( buttonView == dateOnlyCheckBox )           toggleIsDate(isChecked);
 202         }
 203
 204
 205         @Override
 206     public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
 207                 currentDateTime.setTimeZone(tzListAdapter.getTzId(timeZoneSpinner.getSelectedItemPosition()));
 208                 updateLayout();
 209     }
 210
 211
 212         @Override
 213     public void onNothingSelected(AdapterView<?> parent) {
 214       // Do nothing.
 215     }
 216
 217
 218         private void fixFocusAndApply() {
 219                 // force the datepicker & timepicker to lose focus and the typed value is available !
 220                 timePicker.clearFocus();
 221
 222                 // re-read the values, in my case they are now changed
 223                 currentDateTime.setHour(timePicker.getCurrentHour());
 224                 currentDateTime.setMinute(timePicker.getCurrentMinute());
 225
 226                 datePicker.clearFocus();
 227                 currentDateTime.setYearMonthDay(datePicker.getYear(), datePicker.getMonth()+1, datePicker.getDayOfMonth());
 228         }
 229
 230
 231         @Override
 232         public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
 233                 currentDateTime.setHour(hourOfDay);
 234                 currentDateTime.setMinute(minute);
 235                 updateLayout();
 236         }
 237
 238
 239         @Override
 240         public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
 241                 currentDateTime.setYearMonthDay(year, monthOfYear+1, dayOfMonth);
 242                 updateLayout();
 243         }
 244
 245
 246 }