src/base/android/java/src/org/chromium/base/ApiCompatibilityUtils.java

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.base;
   6
   7 import android.app.Notification;
   8 import android.graphics.drawable.Drawable;
   9 import android.os.Build;
  10 import android.view.View;
  11 import android.view.ViewGroup.MarginLayoutParams;
  12 import android.view.ViewTreeObserver;
  13
  14 /**
  15  * Utility class to use new APIs that were added after ICS (API level 14).
  16  */
  17 public class ApiCompatibilityUtils {
  18
  19     private ApiCompatibilityUtils() {
  20     }
  21
  22     /**
  23      * Returns true if view's layout direction is right-to-left.
  24      *
  25      * @param view the View whose layout is being considered
  26      */
  27     public static boolean isLayoutRtl(View view) {
  28         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  29             return view.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL;
  30         } else {
  31             // All layouts are LTR before JB MR1.
  32             return false;
  33         }
  34     }
  35
  36     /**
  37      * @see android.view.View#setLayoutDirection(int)
  38      */
  39     public static void setLayoutDirection(View view, int layoutDirection) {
  40         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  41             view.setLayoutDirection(layoutDirection);
  42         } else {
  43             // Do nothing. RTL layouts aren't supported before JB MR1.
  44         }
  45     }
  46
  47     /**
  48      * @see android.view.ViewGroup.MarginLayoutParams#setMarginEnd(int)
  49      */
  50     public static void setMarginEnd(MarginLayoutParams layoutParams, int end) {
  51         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  52             layoutParams.setMarginEnd(end);
  53         } else {
  54             layoutParams.rightMargin = end;
  55         }
  56     }
  57
  58     /**
  59      * @see android.view.ViewGroup.MarginLayoutParams#getMarginEnd()
  60      */
  61     public static int getMarginEnd(MarginLayoutParams layoutParams) {
  62         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  63             return layoutParams.getMarginEnd();
  64         } else {
  65             return layoutParams.rightMargin;
  66         }
  67     }
  68
  69     /**
  70      * @see android.view.ViewGroup.MarginLayoutParams#setMarginStart(int)
  71      */
  72     public static void setMarginStart(MarginLayoutParams layoutParams, int start) {
  73         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  74             layoutParams.setMarginStart(start);
  75         } else {
  76             layoutParams.leftMargin = start;
  77         }
  78     }
  79
  80     /**
  81      * @see android.view.ViewGroup.MarginLayoutParams#getMarginStart()
  82      */
  83     public static int getMarginStart(MarginLayoutParams layoutParams) {
  84         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
  85             return layoutParams.getMarginStart();
  86         } else {
  87             return layoutParams.leftMargin;
  88         }
  89     }
  90
  91     /**
  92      * @see android.view.View#postInvalidateOnAnimation()
  93      */
  94     public static void postInvalidateOnAnimation(View view) {
  95         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
  96             view.postInvalidateOnAnimation();
  97         } else {
  98             view.postInvalidate();
  99         }
 100     }
 101
 102     // These methods have a new name, and the old name is deprecated.
 103
 104     /**
 105      * @see android.view.View#setBackground(Drawable)
 106      */
 107     @SuppressWarnings("deprecation")
 108     public static void setBackgroundForView(View view, Drawable drawable) {
 109         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
 110             view.setBackground(drawable);
 111         } else {
 112             view.setBackgroundDrawable(drawable);
 113         }
 114     }
 115
 116     /**
 117      * @see android.view.ViewTreeObserver#removeOnGlobalLayoutListener()
 118      */
 119     @SuppressWarnings("deprecation")
 120     public static void removeOnGlobalLayoutListener(
 121             View view, ViewTreeObserver.OnGlobalLayoutListener listener) {
 122         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
 123             view.getViewTreeObserver().removeOnGlobalLayoutListener(listener);
 124         } else {
 125             view.getViewTreeObserver().removeGlobalOnLayoutListener(listener);
 126         }
 127     }
 128
 129     /**
 130      * @see android.app.Notification.Builder#build()
 131      */
 132     @SuppressWarnings("deprecation")
 133     public static Notification buildNotification(Notification.Builder builder) {
 134         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
 135             return builder.build();
 136         } else {
 137             return builder.getNotification();
 138         }
 139     }
 140 }