Implemented allowSingleDay flag, setSelectedRange(), made selectedDays chronological, simplified code

README.md

@@ -31,14 +31,14 @@ Declare a DayPickerView inside your layout XML file:
 
 ```
 
-Next, you have to implement `DatePickerController` in your Activity or your Fragment. You will have to set `getMaxYear` and `onDayOfMonthSelected`. The first one is the max year between the current one and this maxYear. The second one is called every time user selects a new date.
+Next, you have to implement `DatePickerController` or instantiate `DatePickerControllerAdapter` in your Activity or your Fragment. You will be able to set `getMaxYear`, `onDayOfMonthSelected`, and `onDateRangeSelected`. The first one is the max year between the current one and this maxYear. The second one is called every time user selects a new date.  The third is called when a range is selected. 
 
 ``` java
 
     @Override
     public int getMaxYear()
     {
-        return 2015;
+        return Calendar.getInstance().get(Calendar.YEAR) + 1;
     }
 
     @Override
@@ -47,6 +47,12 @@ Next, you have to implement `DatePickerController` in your Activity or your Frag
         Log.e("Day Selected", day + " / " + month + " / " + year);
     }
 
+    @Override
+    public void onDateRangeSelected(SelectedDays selectedDays) 
+    {
+       Log.e("Date range selected", selectedDays.getFirst().toString() + " --> " + selectedDays.getLast().toString());
+    }
+
 ```
 
 ---
@@ -70,6 +76,7 @@ CalendarListview is fully customizable:
 * app:selectedDayRadius [dimension def:16dip] --> Set radius if you use default circle indicator
 * app:calendarHeight [dimension def:270dip] --> Height of each month/row
 * app:enablePreviousDay [boolean def:true] --> Enable past days in current month
+* app:allowSingleDay [boolean def:true] --> Enable single day selection (same start and end date)
 * app:currentDaySelected [boolean def:false] --> Select current day by default
 * app:firstMonth [enum def:-1] --> Start listview at the specified month
 * app:lastMonth [enum def:-1] --> End listview at the specified month

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.1.0'
+        classpath 'com.android.tools.build:gradle:1.5.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

library/src/main/java/com/andexert/calendarlistview/library/CalendarUtils.java

@@ -24,29 +24,20 @@
 package com.andexert.calendarlistview.library;
 
 import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
 
 
 public class CalendarUtils
 {
-	public static int getDaysInMonth(int month, int year) {
-        switch (month) {
-            case Calendar.JANUARY:
-            case Calendar.MARCH:
-            case Calendar.MAY:
-            case Calendar.JULY:
-            case Calendar.AUGUST:
-            case Calendar.OCTOBER:
-            case Calendar.DECEMBER:
-                return 31;
-            case Calendar.APRIL:
-            case Calendar.JUNE:
-            case Calendar.SEPTEMBER:
-            case Calendar.NOVEMBER:
-                return 30;
-            case Calendar.FEBRUARY:
-                return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) ? 29 : 28;
-            default:
-                throw new IllegalArgumentException("Invalid Month");
-        }
+	public static int getDaysInMonth(int month, int year)
+	{
+        return new GregorianCalendar(year, month, 1).getActualMaximum(Calendar.DAY_OF_MONTH);
+	}
+
+	public static boolean isSameDay(Calendar first, Calendar second)
+	{
+		return first.get(Calendar.YEAR) == second.get(Calendar.YEAR) &&
+				first.get(Calendar.DAY_OF_YEAR) == second.get(Calendar.DAY_OF_YEAR);
 	}
 }

library/src/main/java/com/andexert/calendarlistview/library/DatePickerAttributes.java

@@ -0,0 +1,65 @@
+package com.andexert.calendarlistview.library;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+
+import java.util.Calendar;
+
+public class DatePickerAttributes
+{
+	protected static final int MONTHS_IN_YEAR = 12;
+
+	final int firstMonth;
+	final int lastMonth;
+
+	final boolean currentDaySelected;
+	final boolean allowSingleDay;
+	final boolean drawRect;
+	final boolean isPrevDayEnabled;
+
+	final int currentDayTextColor;
+	final int monthTextColor;
+	final int dayTextColor;
+	final int dayNumColor;
+	final int selectedDayTextColor;
+	final int previousDayColor;
+	final int selectedDayBgColor;
+
+	final int dayTextSize;
+	final int dayNameTextSize;
+	final int monthHeaderHeight;
+	final int monthLabelTextSize;
+	final int selectedDayRadius;
+	final int rowHeight;
+
+	DatePickerAttributes(Context context, TypedArray typedArray)
+	{
+		Calendar calendar = Calendar.getInstance();
+		Resources resources = context.getResources();
+
+		firstMonth = typedArray.getInt(R.styleable.DayPickerView_firstMonth, calendar.get(Calendar.MONTH));
+		lastMonth = typedArray.getInt(R.styleable.DayPickerView_lastMonth, (calendar.get(Calendar.MONTH) - 1) % MONTHS_IN_YEAR);
+
+		currentDaySelected = typedArray.getBoolean(R.styleable.DayPickerView_currentDaySelected, false);
+		allowSingleDay = typedArray.getBoolean(R.styleable.DayPickerView_allowSingleDay, true);
+		isPrevDayEnabled = typedArray.getBoolean(R.styleable.DayPickerView_enablePreviousDay, true);
+		drawRect = typedArray.getBoolean(R.styleable.DayPickerView_drawRoundRect, false);
+
+		currentDayTextColor = typedArray.getColor(R.styleable.DayPickerView_colorCurrentDay, resources.getColor(R.color.normal_day));
+		monthTextColor = typedArray.getColor(R.styleable.DayPickerView_colorMonthName, resources.getColor(R.color.normal_day));
+		dayTextColor = typedArray.getColor(R.styleable.DayPickerView_colorDayName, resources.getColor(R.color.normal_day));
+		dayNumColor = typedArray.getColor(R.styleable.DayPickerView_colorNormalDay, resources.getColor(R.color.normal_day));
+		previousDayColor = typedArray.getColor(R.styleable.DayPickerView_colorPreviousDay, resources.getColor(R.color.normal_day));
+		selectedDayBgColor = typedArray.getColor(R.styleable.DayPickerView_colorSelectedDayBackground, resources.getColor(R.color.selected_day_background));
+		selectedDayTextColor = typedArray.getColor(R.styleable.DayPickerView_colorSelectedDayText, resources.getColor(R.color.selected_day_text));
+
+		dayTextSize = typedArray.getDimensionPixelSize(R.styleable.DayPickerView_textSizeDay, resources.getDimensionPixelSize(R.dimen.text_size_day));
+		monthLabelTextSize = typedArray.getDimensionPixelSize(R.styleable.DayPickerView_textSizeMonth, resources.getDimensionPixelSize(R.dimen.text_size_month));
+		dayNameTextSize = typedArray.getDimensionPixelSize(R.styleable.DayPickerView_textSizeDayName, resources.getDimensionPixelSize(R.dimen.text_size_day_name));
+		monthHeaderHeight = typedArray.getDimensionPixelOffset(R.styleable.DayPickerView_headerMonthHeight, resources.getDimensionPixelOffset(R.dimen.header_month_height));
+		selectedDayRadius = typedArray.getDimensionPixelSize(R.styleable.DayPickerView_selectedDayRadius, resources.getDimensionPixelOffset(R.dimen.selected_day_radius));
+
+		rowHeight = ((typedArray.getDimensionPixelSize(R.styleable.DayPickerView_calendarHeight, resources.getDimensionPixelOffset(R.dimen.calendar_height)) - monthHeaderHeight) / 6);
+	}
+}

library/src/main/java/com/andexert/calendarlistview/library/DatePickerController.java

@@ -23,11 +23,11 @@
  ***********************************************************************************/
 package com.andexert.calendarlistview.library;
 
-public interface DatePickerController {
-	public abstract int getMaxYear();
+public interface DatePickerController
+{
+	int getMaxYear();
 
-	public abstract void onDayOfMonthSelected(int year, int month, int day);
-
-    public abstract void onDateRangeSelected(final SimpleMonthAdapter.SelectedDays<SimpleMonthAdapter.CalendarDay> selectedDays);
+	void onDayOfMonthSelected(int year, int month, int day);
 
+    void onDateRangeSelected(final SimpleMonthAdapter.SelectedDays selectedDays);
 }

library/src/main/java/com/andexert/calendarlistview/library/DatePickerControllerAdapter.java

@@ -0,0 +1,20 @@
+package com.andexert.calendarlistview.library;
+
+import com.andexert.calendarlistview.library.SimpleMonthAdapter.SelectedDays;
+
+import java.util.Calendar;
+
+public class DatePickerControllerAdapter implements DatePickerController
+{
+	@Override
+	public int getMaxYear()
+	{
+		return Calendar.getInstance().get(Calendar.YEAR) + 1;
+	}
+
+	@Override
+	public void onDayOfMonthSelected(int year, int month, int day) {}
+
+	@Override
+	public void onDateRangeSelected(SelectedDays selectedDays) {}
+}

library/src/main/java/com/andexert/calendarlistview/library/DayPickerView.java

@@ -29,16 +29,20 @@
 import android.support.v7.widget.RecyclerView;
 import android.util.AttributeSet;
 
+import com.andexert.calendarlistview.library.SimpleMonthAdapter.CalendarDay;
+
 public class DayPickerView extends RecyclerView
 {
-    protected Context mContext;
-	protected SimpleMonthAdapter mAdapter;
-	private DatePickerController mController;
+	protected Context              mContext;
+	private   DatePickerAttributes mAttributes;
+	protected SimpleMonthAdapter   mAdapter;
+	private   DatePickerController mController;
+	private   OnScrollListener     onScrollListener;
+
     protected int mCurrentScrollState = 0;
-	protected long mPreviousScrollPosition;
-	protected int mPreviousScrollState = 0;
-    private TypedArray typedArray;
-    private OnScrollListener onScrollListener;
+    protected long mPreviousScrollPosition;
+    protected int mPreviousScrollState = 0;
+
 
     public DayPickerView(Context context)
     {
@@ -55,7 +59,10 @@ public DayPickerView(Context context, AttributeSet attrs, int defStyle)
         super(context, attrs, defStyle);
         if (!isInEditMode())
         {
-            typedArray = context.obtainStyledAttributes(attrs, R.styleable.DayPickerView);
+			TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.DayPickerView);
+			mAttributes = new DatePickerAttributes(context, typedArray);
+			typedArray.recycle();
+
             setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
             init(context);
         }
@@ -68,7 +75,6 @@ public void setController(DatePickerController mController)
         setAdapter(mAdapter);
     }
 
-
 	public void init(Context paramContext) {
         setLayoutManager(new LinearLayoutManager(paramContext));
 		mContext = paramContext;
@@ -91,10 +97,25 @@ public void onScrolled(RecyclerView recyclerView, int dx, int dy)
         };
 	}
 
+    public void setSelectedRange(CalendarDay first, CalendarDay last)
+    {
+        if (mAdapter != null)
+        {
+            if (first != null)
+            {
+                mAdapter.setSelectedDay(first);
+            }
+
+            if (last != null)
+            {
+                mAdapter.setSelectedDay(last);
+            }
+		}
+	}
 
 	protected void setUpAdapter() {
 		if (mAdapter == null) {
-			mAdapter = new SimpleMonthAdapter(getContext(), mController, typedArray);
+			mAdapter = new SimpleMonthAdapter(getContext(), mController, mAttributes);
         }
 		mAdapter.notifyDataSetChanged();
 	}
@@ -105,7 +126,7 @@ protected void setUpListView() {
 		setFadingEdgeLength(0);
 	}
 
-    public SimpleMonthAdapter.SelectedDays<SimpleMonthAdapter.CalendarDay> getSelectedDays()
+    public SimpleMonthAdapter.SelectedDays getSelectedDays()
     {
         return mAdapter.getSelectedDays();
     }
@@ -115,8 +136,8 @@ protected DatePickerController getController()
         return mController;
     }
 
-    protected TypedArray getTypedArray()
+    protected DatePickerAttributes getAttributes()
     {
-        return typedArray;
+        return mAttributes;
     }
 }