mirror of
https://github.com/zhigang1992/react-native.git
synced 2026-05-23 03:44:13 +08:00
95c1926193
Summary: The `UIManager` already has a lot of responsibilities and is deeply tied with React Native's view architecture. This diff separates out a `DeviceInfo` native module to provide information about screen dimensions and font scale, etc. Reviewed By: fkgozali Differential Revision: D4713834 fbshipit-source-id: f2ee93acf876a4221c29a8c731f5abeffbb97974
107 lines
4.5 KiB
Java
107 lines
4.5 KiB
Java
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*/
|
|
|
|
package com.facebook.react.uimanager;
|
|
|
|
import java.util.List;
|
|
import java.util.Map;
|
|
|
|
import com.facebook.react.bridge.ReactApplicationContext;
|
|
import com.facebook.react.common.MapBuilder;
|
|
import com.facebook.systrace.Systrace;
|
|
import com.facebook.systrace.SystraceMessage;
|
|
|
|
import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
|
|
|
|
/**
|
|
* Helps generate constants map for {@link UIManagerModule} by collecting and merging constants from
|
|
* registered view managers.
|
|
*/
|
|
/* package */ class UIManagerModuleConstantsHelper {
|
|
|
|
private static final String CUSTOM_BUBBLING_EVENT_TYPES_KEY = "customBubblingEventTypes";
|
|
private static final String CUSTOM_DIRECT_EVENT_TYPES_KEY = "customDirectEventTypes";
|
|
|
|
/**
|
|
* Generates map of constants that is then exposed by {@link UIManagerModule}. The constants map
|
|
* contains the following predefined fields for 'customBubblingEventTypes' and
|
|
* 'customDirectEventTypes'. Provided list of {@param viewManagers} is then used to populate
|
|
* content of those predefined fields using
|
|
* {@link ViewManager#getExportedCustomBubblingEventTypeConstants} and
|
|
* {@link ViewManager#getExportedCustomDirectEventTypeConstants} respectively. Each view manager
|
|
* is in addition allowed to expose viewmanager-specific constants that are placed under the key
|
|
* that corresponds to the view manager's name (see {@link ViewManager#getName}). Constants are
|
|
* merged into the map of {@link UIManagerModule} base constants that is stored in
|
|
* {@link UIManagerModuleConstants}.
|
|
* TODO(6845124): Create a test for this
|
|
*/
|
|
/* package */ static Map<String, Object> createConstants(
|
|
List<ViewManager> viewManagers,
|
|
boolean lazyViewManagersEnabled) {
|
|
Map<String, Object> constants = UIManagerModuleConstants.getConstants();
|
|
Map bubblingEventTypesConstants = UIManagerModuleConstants.getBubblingEventTypeConstants();
|
|
Map directEventTypesConstants = UIManagerModuleConstants.getDirectEventTypeConstants();
|
|
|
|
for (ViewManager viewManager : viewManagers) {
|
|
SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "constants for ViewManager")
|
|
.arg("ViewManager", viewManager.getName())
|
|
.flush();
|
|
try {
|
|
Map viewManagerBubblingEvents = viewManager.getExportedCustomBubblingEventTypeConstants();
|
|
if (viewManagerBubblingEvents != null) {
|
|
recursiveMerge(bubblingEventTypesConstants, viewManagerBubblingEvents);
|
|
}
|
|
Map viewManagerDirectEvents = viewManager.getExportedCustomDirectEventTypeConstants();
|
|
if (viewManagerDirectEvents != null) {
|
|
recursiveMerge(directEventTypesConstants, viewManagerDirectEvents);
|
|
}
|
|
Map viewManagerConstants = MapBuilder.newHashMap();
|
|
Map customViewConstants = viewManager.getExportedViewConstants();
|
|
if (customViewConstants != null) {
|
|
viewManagerConstants.put("Constants", customViewConstants);
|
|
}
|
|
Map viewManagerCommands = viewManager.getCommandsMap();
|
|
if (viewManagerCommands != null) {
|
|
viewManagerConstants.put("Commands", viewManagerCommands);
|
|
}
|
|
Map<String, String> viewManagerNativeProps = viewManager.getNativeProps();
|
|
if (!viewManagerNativeProps.isEmpty()) {
|
|
viewManagerConstants.put("NativeProps", viewManagerNativeProps);
|
|
}
|
|
if (!viewManagerConstants.isEmpty()) {
|
|
constants.put(viewManager.getName(), viewManagerConstants);
|
|
}
|
|
} finally {
|
|
Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
|
|
}
|
|
}
|
|
|
|
constants.put(CUSTOM_BUBBLING_EVENT_TYPES_KEY, bubblingEventTypesConstants);
|
|
constants.put(CUSTOM_DIRECT_EVENT_TYPES_KEY, directEventTypesConstants);
|
|
constants.put("AndroidLazyViewManagersEnabled", lazyViewManagersEnabled);
|
|
|
|
return constants;
|
|
}
|
|
|
|
/**
|
|
* Merges {@param source} map into {@param dest} map recursively
|
|
*/
|
|
private static void recursiveMerge(Map dest, Map source) {
|
|
for (Object key : source.keySet()) {
|
|
Object sourceValue = source.get(key);
|
|
Object destValue = dest.get(key);
|
|
if (destValue != null && (sourceValue instanceof Map) && (destValue instanceof Map)) {
|
|
recursiveMerge((Map) destValue, (Map) sourceValue);
|
|
} else {
|
|
dest.put(key, sourceValue);
|
|
}
|
|
}
|
|
}
|
|
}
|