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am 678aef41: am f33c0f85: Merge "CalendarView rendering: use R.styleable to find attr." into mnc-dev

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* commit '678aef4125e9d56f2cc2362e71c921bf596ca903':
  CalendarView rendering: use R.styleable to find attr.
This commit is contained in:
Deepanshu Gupta
2015-07-24 03:11:29 +00:00
committed by Android Git Automerger
parent 2f778da1cb 678aef4125
commit 2df99f99e9
1 changed files with 123 additions and 19 deletions
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142
tools/layoutlib/bridge/src/com/android/layoutlib/bridge/Bridge.java
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@@ -50,6 +50,7 @@ import java.lang.ref.SoftReference;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.Comparator;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.HashMap;
@@ -93,7 +94,7 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
/**
* Same as sRMap except for int[] instead of int resources. This is for android.R only.
*/
private final static Map<IntArray, String> sRArrayMap = new HashMap<IntArray, String>();
private final static Map<IntArray, String> sRArrayMap = new HashMap<IntArray, String>(384);
/**
* Reverse map compared to sRMap, resource type -> (resource name -> id).
* This is for com.android.internal.R.
@@ -249,37 +250,56 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
// the internal version), and put the content in the maps.
try {
Class<?> r = com.android.internal.R.class;
// Parse the styleable class first, since it may contribute to attr values.
parseStyleable();
for (Class<?> inner : r.getDeclaredClasses()) {
if (inner == com.android.internal.R.styleable.class) {
// Already handled the styleable case. Not skipping attr, as there may be attrs
// that are not referenced from styleables.
continue;
}
String resTypeName = inner.getSimpleName();
ResourceType resType = ResourceType.getEnum(resTypeName);
if (resType != null) {
Map<String, Integer> fullMap = new HashMap<String, Integer>();
sRevRMap.put(resType, fullMap);
Map<String, Integer> fullMap = null;
switch (resType) {
case ATTR:
fullMap = sRevRMap.get(ResourceType.ATTR);
break;
case STRING:
case STYLE:
// Slightly less than thousand entries in each.
fullMap = new HashMap<String, Integer>(1280);
// no break.
default:
if (fullMap == null) {
fullMap = new HashMap<String, Integer>();
}
sRevRMap.put(resType, fullMap);
}
for (Field f : inner.getDeclaredFields()) {
// only process static final fields. Since the final attribute may have
// been altered by layoutlib_create, we only check static
int modifiers = f.getModifiers();
if (Modifier.isStatic(modifiers)) {
Class<?> type = f.getType();
if (type.isArray() && type.getComponentType() == int.class) {
// if the object is an int[] we put it in sRArrayMap using an IntArray
// wrapper that properly implements equals and hashcode for the array
// objects, as required by the map contract.
sRArrayMap.put(new IntArray((int[]) f.get(null)), f.getName());
} else if (type == int.class) {
Integer value = (Integer) f.get(null);
sRMap.put(value, Pair.of(resType, f.getName()));
fullMap.put(f.getName(), value);
} else {
assert false;
}
if (!isValidRField(f)) {
continue;
}
Class<?> type = f.getType();
if (type.isArray()) {
// if the object is an int[] we put it in sRArrayMap using an IntArray
// wrapper that properly implements equals and hashcode for the array
// objects, as required by the map contract.
sRArrayMap.put(new IntArray((int[]) f.get(null)), f.getName());
} else {
Integer value = (Integer) f.get(null);
sRMap.put(value, Pair.of(resType, f.getName()));
fullMap.put(f.getName(), value);
}
}
}
}
} catch (Throwable throwable) {
} catch (Exception throwable) {
if (log != null) {
log.error(LayoutLog.TAG_BROKEN,
"Failed to load com.android.internal.R from the layout library jar",
@@ -291,6 +311,90 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
return true;
}
/**
* Tests if the field is pubic, static and one of int or int[].
*/
private static boolean isValidRField(Field field) {
int modifiers = field.getModifiers();
boolean isAcceptable = Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers);
Class<?> type = field.getType();
return isAcceptable && type == int.class ||
(type.isArray() && type.getComponentType() == int.class);
}
private static void parseStyleable() throws Exception {
// R.attr doesn't contain all the needed values. There are too many resources in the
// framework for all to be in the R class. Only the ones specified manually in
// res/values/symbols.xml are put in R class. Since, we need to create a map of all attr
// values, we try and find them from the styleables.
// There were 1500 elements in this map at M timeframe.
Map<String, Integer> revRAttrMap = new HashMap<String, Integer>(2048);
sRevRMap.put(ResourceType.ATTR, revRAttrMap);
// There were 2000 elements in this map at M timeframe.
Map<String, Integer> revRStyleableMap = new HashMap<String, Integer>(3072);
sRevRMap.put(ResourceType.STYLEABLE, revRStyleableMap);
Class<?> c = com.android.internal.R.styleable.class;
Field[] fields = c.getDeclaredFields();
// Sort the fields to bring all arrays to the beginning, so that indices into the array are
// able to refer back to the arrays (i.e. no forward references).
Arrays.sort(fields, new Comparator<Field>() {
@Override
public int compare(Field o1, Field o2) {
if (o1 == o2) {
return 0;
}
Class<?> t1 = o1.getType();
Class<?> t2 = o2.getType();
if (t1.isArray() && !t2.isArray()) {
return -1;
} else if (t2.isArray() && !t1.isArray()) {
return 1;
}
return o1.getName().compareTo(o2.getName());
}
});
Map<String, int[]> styleables = new HashMap<String, int[]>();
for (Field field : fields) {
if (!isValidRField(field)) {
// Only consider public static fields that are int or int[].
// Don't check the final flag as it may have been modified by layoutlib_create.
continue;
}
String name = field.getName();
if (field.getType().isArray()) {
int[] styleableValue = (int[]) field.get(null);
sRArrayMap.put(new IntArray(styleableValue), name);
styleables.put(name, styleableValue);
continue;
}
// Not an array.
String arrayName = name;
int[] arrayValue = null;
int index;
while ((index = arrayName.lastIndexOf('_')) >= 0) {
// Find the name of the corresponding styleable.
// Search in reverse order so that attrs like LinearLayout_Layout_layout_gravity
// are mapped to LinearLayout_Layout and not to LinearLayout.
arrayName = arrayName.substring(0, index);
arrayValue = styleables.get(arrayName);
if (arrayValue != null) {
break;
}
}
index = (Integer) field.get(null);
if (arrayValue != null) {
String attrName = name.substring(arrayName.length() + 1);
int attrValue = arrayValue[index];
sRMap.put(attrValue, Pair.of(ResourceType.ATTR, attrName));
revRAttrMap.put(attrName, attrValue);
}
sRMap.put(index, Pair.of(ResourceType.STYLEABLE, name));
revRStyleableMap.put(name, index);
}
}
@Override
public boolean dispose() {
BridgeAssetManager.clearSystem();