src/com/android/calendar/month/SimpleWeeksAdapter.java - platform/packages/apps/Calendar - Git at Google

 /*
  * Copyright (C) 2010 The Android Open Source 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.calendar.month;

 // TODO Remove calendar imports when the required methods have been
 // refactored into the public api
 import com.android.calendar.CalendarController;
 import com.android.calendar.Utils;

 import android.content.Context;
 import android.text.format.Time;
 import android.util.Log;
 import android.view.GestureDetector;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnTouchListener;
 import android.view.ViewGroup;
 import android.widget.AbsListView.LayoutParams;
 import android.widget.BaseAdapter;
 import android.widget.ListView;

 import java.util.Calendar;
 import java.util.HashMap;
 import java.util.Locale;

 /**
  * <p>
  * This is a specialized adapter for creating a list of weeks with selectable
  * days. It can be configured to display the week number, start the week on a
  * given day, show a reduced number of days, or display an arbitrary number of
  * weeks at a time. See {@link SimpleDayPickerFragment} for usage.
  * </p>
  */
 public class SimpleWeeksAdapter extends BaseAdapter implements OnTouchListener {

     private static final String TAG = "MonthByWeek";

     /**
      * The number of weeks to display at a time.
      */
     public static final String WEEK_PARAMS_NUM_WEEKS = "num_weeks";
     /**
      * Which month should be in focus currently.
      */
     public static final String WEEK_PARAMS_FOCUS_MONTH = "focus_month";
     /**
      * Whether the week number should be shown. Non-zero to show them.
      */
     public static final String WEEK_PARAMS_SHOW_WEEK = "week_numbers";
     /**
      * Which day the week should start on. {@link Time#SUNDAY} through
      * {@link Time#SATURDAY}.
      */
     public static final String WEEK_PARAMS_WEEK_START = "week_start";
     /**
      * The Julian day to highlight as selected.
      */
     public static final String WEEK_PARAMS_JULIAN_DAY = "selected_day";
     /**
      * How many days of the week to display [1-7].
      */
     public static final String WEEK_PARAMS_DAYS_PER_WEEK = "days_per_week";

     protected static final int WEEK_COUNT = CalendarController.MAX_CALENDAR_WEEK
             - CalendarController.MIN_CALENDAR_WEEK;
     protected static int DEFAULT_NUM_WEEKS = 6;
     protected static int DEFAULT_MONTH_FOCUS = 0;
     protected static int DEFAULT_DAYS_PER_WEEK = 7;
     protected static int DEFAULT_WEEK_HEIGHT = 32;
     protected static int WEEK_7_OVERHANG_HEIGHT = 7;

     protected static float mScale = 0;
     protected Context mContext;
     // The day to highlight as selected
     protected Time mSelectedDay;
     // The week since 1970 that the selected day is in
     protected int mSelectedWeek;
     // When the week starts; numbered like Time.<WEEKDAY> (e.g. SUNDAY=0).
     protected int mFirstDayOfWeek;
     protected boolean mShowWeekNumber = false;
     protected GestureDetector mGestureDetector;
     protected int mNumWeeks = DEFAULT_NUM_WEEKS;
     protected int mDaysPerWeek = DEFAULT_DAYS_PER_WEEK;
     protected int mFocusMonth = DEFAULT_MONTH_FOCUS;

     public SimpleWeeksAdapter(Context context, HashMap<String, Integer> params) {
         mContext = context;

         // Get default week start based on locale, subtracting one for use with android Time.
         Calendar cal = Calendar.getInstance(Locale.getDefault());
         mFirstDayOfWeek = cal.getFirstDayOfWeek() - 1;

         if (mScale == 0) {
             mScale = context.getResources().getDisplayMetrics().density;
             if (mScale != 1) {
                 WEEK_7_OVERHANG_HEIGHT *= mScale;
             }
         }
         init();
         updateParams(params);
     }

     /**
      * Set up the gesture detector and selected time
      */
     protected void init() {
         mGestureDetector = new GestureDetector(mContext, new CalendarGestureListener());
         mSelectedDay = new Time();
         mSelectedDay.setToNow();
     }

     /**
      * Parse the parameters and set any necessary fields. See
      * {@link #WEEK_PARAMS_NUM_WEEKS} for parameter details.
      *
      * @param params A list of parameters for this adapter
      */
     public void updateParams(HashMap<String, Integer> params) {
         if (params == null) {
             Log.e(TAG, "WeekParameters are null! Cannot update adapter.");
             return;
         }
         if (params.containsKey(WEEK_PARAMS_FOCUS_MONTH)) {
             mFocusMonth = params.get(WEEK_PARAMS_FOCUS_MONTH);
         }
         if (params.containsKey(WEEK_PARAMS_FOCUS_MONTH)) {
             mNumWeeks = params.get(WEEK_PARAMS_NUM_WEEKS);
         }
         if (params.containsKey(WEEK_PARAMS_SHOW_WEEK)) {
             mShowWeekNumber = params.get(WEEK_PARAMS_SHOW_WEEK) != 0;
         }
         if (params.containsKey(WEEK_PARAMS_WEEK_START)) {
             mFirstDayOfWeek = params.get(WEEK_PARAMS_WEEK_START);
         }
         if (params.containsKey(WEEK_PARAMS_JULIAN_DAY)) {
             int julianDay = params.get(WEEK_PARAMS_JULIAN_DAY);
             mSelectedDay.setJulianDay(julianDay);
             mSelectedWeek = Utils.getWeeksSinceEpochFromJulianDay(julianDay, mFirstDayOfWeek);
         }
         if (params.containsKey(WEEK_PARAMS_DAYS_PER_WEEK)) {
             mDaysPerWeek = params.get(WEEK_PARAMS_DAYS_PER_WEEK);
         }
         refresh();
     }

     /**
      * Updates the selected day and related parameters.
      *
      * @param selectedTime The time to highlight
      */
     public void setSelectedDay(Time selectedTime) {
         mSelectedDay.set(selectedTime);
         long millis = mSelectedDay.normalize(true);
         mSelectedWeek = Utils.getWeeksSinceEpochFromJulianDay(
                 Time.getJulianDay(millis, mSelectedDay.gmtoff), mFirstDayOfWeek);
         notifyDataSetChanged();
     }

     /**
      * Returns the currently highlighted day
      *
      * @return
      */
     public Time getSelectedDay() {
         return mSelectedDay;
     }

     /**
      * updates any config options that may have changed and refreshes the view
      */
     protected void refresh() {
         notifyDataSetChanged();
     }

     @Override
     public int getCount() {
         return WEEK_COUNT;
     }

     @Override
     public Object getItem(int position) {
         return null;
     }

     @Override
     public long getItemId(int position) {
         return position;
     }

     @SuppressWarnings("unchecked")
     @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         SimpleWeekView v;
         HashMap<String, Integer> drawingParams = null;
         if (convertView != null) {
             v = (SimpleWeekView) convertView;
             // We store the drawing parameters in the view so it can be recycled
             drawingParams = (HashMap<String, Integer>) v.getTag();
         } else {
             v = new SimpleWeekView(mContext);
             // Set up the new view
             LayoutParams params = new LayoutParams(
                     LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
             v.setLayoutParams(params);
             v.setClickable(true);
             v.setOnTouchListener(this);
         }
         if (drawingParams == null) {
             drawingParams = new HashMap<String, Integer>();
         }
         drawingParams.clear();

         int selectedDay = -1;
         if (mSelectedWeek == position) {
             selectedDay = mSelectedDay.weekDay;
         }

         // pass in all the view parameters
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_HEIGHT,
                 (parent.getHeight() - WEEK_7_OVERHANG_HEIGHT) / mNumWeeks);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_SELECTED_DAY, selectedDay);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_SHOW_WK_NUM, mShowWeekNumber ? 1 : 0);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_WEEK_START, mFirstDayOfWeek);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_NUM_DAYS, mDaysPerWeek);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_WEEK, position);
         drawingParams.put(SimpleWeekView.VIEW_PARAMS_FOCUS_MONTH, mFocusMonth);
         v.setWeekParams(drawingParams, mSelectedDay.timezone);
         v.invalidate();

         return v;
     }

     /**
      * Changes which month is in focus and updates the view.
      *
      * @param month The month to show as in focus [0-11]
      */
     public void updateFocusMonth(int month) {
         mFocusMonth = month;
         notifyDataSetChanged();
     }

     @Override
     public boolean onTouch(View v, MotionEvent event) {
         if (mGestureDetector.onTouchEvent(event)) {
             SimpleWeekView view = (SimpleWeekView) v;
             Time day = ((SimpleWeekView)v).getDayFromLocation(event.getX());
             if (Log.isLoggable(TAG, Log.DEBUG)) {
                 Log.d(TAG, "Touched day at Row=" + view.mWeek + " day=" + day.toString());
             }
             if (day != null) {
                 onDayTapped(day);
             }
             return true;
         }
         return false;
     }

     /**
      * Maintains the same hour/min/sec but moves the day to the tapped day.
      *
      * @param day The day that was tapped
      */
     protected void onDayTapped(Time day) {
         day.hour = mSelectedDay.hour;
         day.minute = mSelectedDay.minute;
         day.second = mSelectedDay.second;
         setSelectedDay(day);
     }


     /**
      * This is here so we can identify single tap events and set the selected
      * day correctly
      */
     protected class CalendarGestureListener extends GestureDetector.SimpleOnGestureListener {
         @Override
         public boolean onSingleTapUp(MotionEvent e) {
             return true;
         }
     }

     ListView mListView;

     public void setListView(ListView lv) {
         mListView = lv;
     }
 }
	/*
	* Copyright (C) 2010 The Android Open Source 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.calendar.month;

	// TODO Remove calendar imports when the required methods have been
	// refactored into the public api
	import com.android.calendar.CalendarController;
	import com.android.calendar.Utils;

	import android.content.Context;
	import android.text.format.Time;
	import android.util.Log;
	import android.view.GestureDetector;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.View.OnTouchListener;
	import android.view.ViewGroup;
	import android.widget.AbsListView.LayoutParams;
	import android.widget.BaseAdapter;
	import android.widget.ListView;

	import java.util.Calendar;
	import java.util.HashMap;
	import java.util.Locale;

	/**
	* <p>
	* This is a specialized adapter for creating a list of weeks with selectable
	* days. It can be configured to display the week number, start the week on a
	* given day, show a reduced number of days, or display an arbitrary number of
	* weeks at a time. See {@link SimpleDayPickerFragment} for usage.
	* </p>
	*/
	public class SimpleWeeksAdapter extends BaseAdapter implements OnTouchListener {

	private static final String TAG = "MonthByWeek";

	/**
	* The number of weeks to display at a time.
	*/
	public static final String WEEK_PARAMS_NUM_WEEKS = "num_weeks";
	/**
	* Which month should be in focus currently.
	*/
	public static final String WEEK_PARAMS_FOCUS_MONTH = "focus_month";
	/**
	* Whether the week number should be shown. Non-zero to show them.
	*/
	public static final String WEEK_PARAMS_SHOW_WEEK = "week_numbers";
	/**
	* Which day the week should start on. {@link Time#SUNDAY} through
	* {@link Time#SATURDAY}.
	*/
	public static final String WEEK_PARAMS_WEEK_START = "week_start";
	/**
	* The Julian day to highlight as selected.
	*/
	public static final String WEEK_PARAMS_JULIAN_DAY = "selected_day";
	/**
	* How many days of the week to display [1-7].
	*/
	public static final String WEEK_PARAMS_DAYS_PER_WEEK = "days_per_week";

	protected static final int WEEK_COUNT = CalendarController.MAX_CALENDAR_WEEK
	- CalendarController.MIN_CALENDAR_WEEK;
	protected static int DEFAULT_NUM_WEEKS = 6;
	protected static int DEFAULT_MONTH_FOCUS = 0;
	protected static int DEFAULT_DAYS_PER_WEEK = 7;
	protected static int DEFAULT_WEEK_HEIGHT = 32;
	protected static int WEEK_7_OVERHANG_HEIGHT = 7;

	protected static float mScale = 0;
	protected Context mContext;
	// The day to highlight as selected
	protected Time mSelectedDay;
	// The week since 1970 that the selected day is in
	protected int mSelectedWeek;
	// When the week starts; numbered like Time.<WEEKDAY> (e.g. SUNDAY=0).
	protected int mFirstDayOfWeek;
	protected boolean mShowWeekNumber = false;
	protected GestureDetector mGestureDetector;
	protected int mNumWeeks = DEFAULT_NUM_WEEKS;
	protected int mDaysPerWeek = DEFAULT_DAYS_PER_WEEK;
	protected int mFocusMonth = DEFAULT_MONTH_FOCUS;

	public SimpleWeeksAdapter(Context context, HashMap<String, Integer> params) {
	mContext = context;

	// Get default week start based on locale, subtracting one for use with android Time.
	Calendar cal = Calendar.getInstance(Locale.getDefault());
	mFirstDayOfWeek = cal.getFirstDayOfWeek() - 1;

	if (mScale == 0) {
	mScale = context.getResources().getDisplayMetrics().density;
	if (mScale != 1) {
	WEEK_7_OVERHANG_HEIGHT *= mScale;
	}
	}
	init();
	updateParams(params);
	}

	/**
	* Set up the gesture detector and selected time
	*/
	protected void init() {
	mGestureDetector = new GestureDetector(mContext, new CalendarGestureListener());
	mSelectedDay = new Time();
	mSelectedDay.setToNow();
	}

	/**
	* Parse the parameters and set any necessary fields. See
	* {@link #WEEK_PARAMS_NUM_WEEKS} for parameter details.
	*
	* @param params A list of parameters for this adapter
	*/
	public void updateParams(HashMap<String, Integer> params) {
	if (params == null) {
	Log.e(TAG, "WeekParameters are null! Cannot update adapter.");
	return;
	}
	if (params.containsKey(WEEK_PARAMS_FOCUS_MONTH)) {
	mFocusMonth = params.get(WEEK_PARAMS_FOCUS_MONTH);
	}
	if (params.containsKey(WEEK_PARAMS_FOCUS_MONTH)) {
	mNumWeeks = params.get(WEEK_PARAMS_NUM_WEEKS);
	}
	if (params.containsKey(WEEK_PARAMS_SHOW_WEEK)) {
	mShowWeekNumber = params.get(WEEK_PARAMS_SHOW_WEEK) != 0;
	}
	if (params.containsKey(WEEK_PARAMS_WEEK_START)) {
	mFirstDayOfWeek = params.get(WEEK_PARAMS_WEEK_START);
	}
	if (params.containsKey(WEEK_PARAMS_JULIAN_DAY)) {
	int julianDay = params.get(WEEK_PARAMS_JULIAN_DAY);
	mSelectedDay.setJulianDay(julianDay);
	mSelectedWeek = Utils.getWeeksSinceEpochFromJulianDay(julianDay, mFirstDayOfWeek);
	}
	if (params.containsKey(WEEK_PARAMS_DAYS_PER_WEEK)) {
	mDaysPerWeek = params.get(WEEK_PARAMS_DAYS_PER_WEEK);
	}
	refresh();
	}

	/**
	* Updates the selected day and related parameters.
	*
	* @param selectedTime The time to highlight
	*/
	public void setSelectedDay(Time selectedTime) {
	mSelectedDay.set(selectedTime);
	long millis = mSelectedDay.normalize(true);
	mSelectedWeek = Utils.getWeeksSinceEpochFromJulianDay(
	Time.getJulianDay(millis, mSelectedDay.gmtoff), mFirstDayOfWeek);
	notifyDataSetChanged();
	}

	/**
	* Returns the currently highlighted day
	*
	* @return
	*/
	public Time getSelectedDay() {
	return mSelectedDay;
	}

	/**
	* updates any config options that may have changed and refreshes the view
	*/
	protected void refresh() {
	notifyDataSetChanged();
	}

	@Override
	public int getCount() {
	return WEEK_COUNT;
	}

	@Override
	public Object getItem(int position) {
	return null;
	}

	@Override
	public long getItemId(int position) {
	return position;
	}

	@SuppressWarnings("unchecked")
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	SimpleWeekView v;
	HashMap<String, Integer> drawingParams = null;
	if (convertView != null) {
	v = (SimpleWeekView) convertView;
	// We store the drawing parameters in the view so it can be recycled
	drawingParams = (HashMap<String, Integer>) v.getTag();
	} else {
	v = new SimpleWeekView(mContext);
	// Set up the new view
	LayoutParams params = new LayoutParams(
	LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
	v.setLayoutParams(params);
	v.setClickable(true);
	v.setOnTouchListener(this);
	}
	if (drawingParams == null) {
	drawingParams = new HashMap<String, Integer>();
	}
	drawingParams.clear();

	int selectedDay = -1;
	if (mSelectedWeek == position) {
	selectedDay = mSelectedDay.weekDay;
	}

	// pass in all the view parameters
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_HEIGHT,
	(parent.getHeight() - WEEK_7_OVERHANG_HEIGHT) / mNumWeeks);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_SELECTED_DAY, selectedDay);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_SHOW_WK_NUM, mShowWeekNumber ? 1 : 0);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_WEEK_START, mFirstDayOfWeek);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_NUM_DAYS, mDaysPerWeek);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_WEEK, position);
	drawingParams.put(SimpleWeekView.VIEW_PARAMS_FOCUS_MONTH, mFocusMonth);
	v.setWeekParams(drawingParams, mSelectedDay.timezone);
	v.invalidate();

	return v;
	}

	/**
	* Changes which month is in focus and updates the view.
	*
	* @param month The month to show as in focus [0-11]
	*/
	public void updateFocusMonth(int month) {
	mFocusMonth = month;
	notifyDataSetChanged();
	}

	@Override
	public boolean onTouch(View v, MotionEvent event) {
	if (mGestureDetector.onTouchEvent(event)) {
	SimpleWeekView view = (SimpleWeekView) v;
	Time day = ((SimpleWeekView)v).getDayFromLocation(event.getX());
	if (Log.isLoggable(TAG, Log.DEBUG)) {
	Log.d(TAG, "Touched day at Row=" + view.mWeek + " day=" + day.toString());
	}
	if (day != null) {
	onDayTapped(day);
	}
	return true;
	}
	return false;
	}

	/**
	* Maintains the same hour/min/sec but moves the day to the tapped day.
	*
	* @param day The day that was tapped
	*/
	protected void onDayTapped(Time day) {
	day.hour = mSelectedDay.hour;
	day.minute = mSelectedDay.minute;
	day.second = mSelectedDay.second;
	setSelectedDay(day);
	}


	/**
	* This is here so we can identify single tap events and set the selected
	* day correctly
	*/
	protected class CalendarGestureListener extends GestureDetector.SimpleOnGestureListener {
	@Override
	public boolean onSingleTapUp(MotionEvent e) {
	return true;
	}
	}

	ListView mListView;

	public void setListView(ListView lv) {
	mListView = lv;
	}
	}