Merge "Examine widget hierarchy to find clocks."

core/java/android/text/format/DateFormat.java

@@ -452,6 +452,16 @@ public class DateFormat {
      * @hide
      */
     public static boolean hasSeconds(CharSequence inFormat) {
+        return hasDesignator(inFormat, SECONDS);
+    }
+
+    /**
+     * Test if a format string contains the given designator. Always returns
+     * {@code false} if the input format is {@code null}.
+     *
+     * @hide
+     */
+    public static boolean hasDesignator(CharSequence inFormat, char designator) {
         if (inFormat == null) return false;
 
         final int length = inFormat.length();
@@ -465,7 +475,7 @@ public class DateFormat {
 
             if (c == QUOTE) {
                 count = skipQuotedText(inFormat, i, length);
-            } else if (c == SECONDS) {
+            } else if (c == designator) {
                 return true;
             }
         }

core/java/android/widget/TextClock.java

@@ -385,6 +385,16 @@ public class TextClock extends TextView {
         chooseFormat(true);
     }
 
+    /**
+     * Returns the current format string. Always valid after constructor has
+     * finished, and will never be {@code null}.
+     *
+     * @hide
+     */
+    public CharSequence getFormat() {
+        return mFormat;
+    }
+
     /**
      * Selects either one of {@link #getFormat12Hour()} or {@link #getFormat24Hour()}
      * depending on whether the user has selected 24-hour format.

core/tests/coretests/src/android/text/format/DateFormatTest.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 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.text.format;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import junit.framework.TestCase;
+
+public class DateFormatTest extends TestCase {
+    @SmallTest
+    public void testHasDesignator() throws Exception {
+        assertTrue(DateFormat.hasDesignator("hh:mm:ss", DateFormat.MINUTE));
+        assertTrue(DateFormat.hasDesignator("myyyy", DateFormat.MINUTE));
+        assertTrue(DateFormat.hasDesignator("mmm", DateFormat.MINUTE));
+
+        assertFalse(DateFormat.hasDesignator("hh:MM:ss", DateFormat.MINUTE));
+    }
+
+    @SmallTest
+    public void testHasDesignatorEscaped() throws Exception {
+        assertTrue(DateFormat.hasDesignator("hh:mm 'LOL'", DateFormat.MINUTE));
+
+        assertFalse(DateFormat.hasDesignator("hh:mm 'yyyy'", DateFormat.YEAR));
+    }
+}

policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java

@@ -27,6 +27,7 @@ import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
 import android.os.Handler;
 import android.os.HandlerThread;
+import android.text.format.DateFormat;
 import android.util.AttributeSet;
 import android.util.Slog;
 import android.view.Gravity;
@@ -38,10 +39,12 @@ import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityManager;
 import android.view.animation.DecelerateInterpolator;
 import android.widget.FrameLayout;
+import android.widget.TextClock;
 
 import com.android.internal.widget.LockPatternUtils;
 
 import java.util.ArrayList;
+import java.util.TimeZone;
 
 public class KeyguardWidgetPager extends PagedView implements PagedView.PageSwitchListener,
         OnLongClickListener, ChallengeLayout.OnBouncerStateChangedListener {
@@ -51,6 +54,9 @@ public class KeyguardWidgetPager extends PagedView implements PagedView.PageSwit
     protected static float OVERSCROLL_MAX_ROTATION = 30;
     private static final boolean PERFORM_OVERSCROLL_ROTATION = true;
 
+    private static final int FLAG_HAS_LOCAL_HOUR = 0x1;
+    private static final int FLAG_HAS_LOCAL_MINUTE = 0x2;
+
     protected KeyguardViewStateManager mViewStateManager;
     private LockPatternUtils mLockPatternUtils;
 
@@ -131,16 +137,21 @@ public class KeyguardWidgetPager extends PagedView implements PagedView.PageSwit
 
     @Override
     public void onPageSwitched(View newPage, int newPageIndex) {
-        boolean showingStatusWidget = false;
+        boolean showingClock = false;
         if (newPage instanceof ViewGroup) {
             ViewGroup vg = (ViewGroup) newPage;
             if (vg.getChildAt(0) instanceof KeyguardStatusView) {
-                showingStatusWidget = true;
+                showingClock = true;
             }
         }
 
+        if (newPage != null &&
+                findClockInHierarchy(newPage) == (FLAG_HAS_LOCAL_HOUR | FLAG_HAS_LOCAL_MINUTE)) {
+            showingClock = true;
+        }
+
         // Disable the status bar clock if we're showing the default status widget
-        if (showingStatusWidget) {
+        if (showingClock) {
             setSystemUiVisibility(getSystemUiVisibility() | View.STATUS_BAR_DISABLE_CLOCK);
         } else {
             setSystemUiVisibility(getSystemUiVisibility() & ~View.STATUS_BAR_DISABLE_CLOCK);
@@ -857,4 +868,53 @@ public class KeyguardWidgetPager extends PagedView implements PagedView.PageSwit
     protected boolean shouldSetTopAlignedPivotForWidget(int childIndex) {
         return !isCameraPage(childIndex) && super.shouldSetTopAlignedPivotForWidget(childIndex);
     }
+
+    /**
+     * Search given {@link View} hierarchy for {@link TextClock} instances that
+     * show various time components. Returns combination of
+     * {@link #FLAG_HAS_LOCAL_HOUR} and {@link #FLAG_HAS_LOCAL_MINUTE}.
+     */
+    private static int findClockInHierarchy(View view) {
+        if (view instanceof TextClock) {
+            return getClockFlags((TextClock) view);
+        } else if (view instanceof ViewGroup) {
+            int flags = 0;
+            final ViewGroup group = (ViewGroup) view;
+            final int size = group.getChildCount();
+            for (int i = 0; i < size; i++) {
+                flags |= findClockInHierarchy(group.getChildAt(i));
+            }
+            return flags;
+        } else {
+            return 0;
+        }
+    }
+
+    /**
+     * Return combination of {@link #FLAG_HAS_LOCAL_HOUR} and
+     * {@link #FLAG_HAS_LOCAL_MINUTE} describing the time represented described
+     * by the given {@link TextClock}.
+     */
+    private static int getClockFlags(TextClock clock) {
+        int flags = 0;
+
+        final String timeZone = clock.getTimeZone();
+        if (timeZone != null && !TimeZone.getDefault().equals(TimeZone.getTimeZone(timeZone))) {
+            // Ignore clocks showing another timezone
+            return 0;
+        }
+
+        final CharSequence format = clock.getFormat();
+        final char hour = clock.is24HourModeEnabled() ? DateFormat.HOUR_OF_DAY
+                : DateFormat.HOUR;
+
+        if (DateFormat.hasDesignator(format, hour)) {
+            flags |= FLAG_HAS_LOCAL_HOUR;
+        }
+        if (DateFormat.hasDesignator(format, DateFormat.MINUTE)) {
+            flags |= FLAG_HAS_LOCAL_MINUTE;
+        }
+
+        return flags;
+    }
 }