Update DatePicker widget and its related dialog

- the old DatePicker widget is still there for obvious layout compatibility reasons
- add a new delegate implementation for having a new UI
- use the new delegate only for the DatePickerDialog (which does not need to be
the same)
- added support for Theming and light/dark Themes
- added support for RTL
- added support for Accessibility
- verified support for Keyboard
- verified that CTS tests for DatePicker are passing (for both the legacy and the
new widgets)

Also added a new HapticFeedbackConstants.CALENDAR_DATE and its related code for
enabling day selection vibration

Change-Id: I256bd7c21edd8f3b910413ca15ce26d3a5ef7d9c

1 files changed, 114 insertions, 0 deletions

diff --git a/core/java/android/widget/TextViewWithCircularIndicator.java b/core/java/android/widget/TextViewWithCircularIndicator.java
new file mode 100644
index 0000000..22d770c
--- /dev/null
+++ b/core/java/android/widget/TextViewWithCircularIndicator.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2014 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 android.widget;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Typeface;
+import android.util.AttributeSet;
+
+import com.android.internal.R;
+
+class TextViewWithCircularIndicator extends TextView {
+
+    private static final int SELECTED_CIRCLE_ALPHA = 60;
+
+    private final Paint mCirclePaint = new Paint();
+
+    private final String mItemIsSelectedText;
+    private int mCircleColor;
+    private boolean mDrawIndicator;
+
+    public TextViewWithCircularIndicator(Context context) {
+        this(context, null);
+    }
+
+    public TextViewWithCircularIndicator(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public TextViewWithCircularIndicator(Context context, AttributeSet attrs, int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public TextViewWithCircularIndicator(Context context, AttributeSet attrs,
+            int defStyleAttr, int defStyleRes) {
+
+        super(context, attrs);
+        Resources res = context.getResources();
+
+        // Use Theme attributes if possible
+        final TypedArray a = mContext.obtainStyledAttributes(attrs,
+                R.styleable.DatePicker, defStyleAttr, defStyleRes);
+
+        final int resId = a.getResourceId(
+                R.styleable.DatePicker_dateSelectorYearListItemTextAppearance, -1);
+        if (resId != -1) {
+            setTextAppearance(context, resId);
+        }
+
+        mItemIsSelectedText = res.getString(R.string.item_is_selected);
+
+        a.recycle();
+
+        init();
+    }
+
+    private void init() {
+        mCirclePaint.setTypeface(Typeface.create(mCirclePaint.getTypeface(), Typeface.BOLD));
+        mCirclePaint.setAntiAlias(true);
+        mCirclePaint.setTextAlign(Paint.Align.CENTER);
+        mCirclePaint.setStyle(Paint.Style.FILL);
+    }
+
+    public void setCircleColor(int color) {
+        if (color != mCircleColor) {
+            mCircleColor = color;
+            mCirclePaint.setColor(mCircleColor);
+            mCirclePaint.setAlpha(SELECTED_CIRCLE_ALPHA);
+            requestLayout();
+        }
+    }
+
+    public void setDrawIndicator(boolean drawIndicator) {
+        mDrawIndicator = drawIndicator;
+    }
+
+    @Override
+    public void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+        if (mDrawIndicator) {
+            final int width = getWidth();
+            final int height = getHeight();
+            int radius = Math.min(width, height) / 2;
+            canvas.drawCircle(width / 2, height / 2, radius, mCirclePaint);
+        }
+    }
+
+    @Override
+    public CharSequence getContentDescription() {
+        CharSequence itemText = getText();
+        if (mDrawIndicator) {
+            return String.format(mItemIsSelectedText, itemText);
+        } else {
+            return itemText;
+        }
+    }
+}
\ No newline at end of file