Add source style for each TypedValue.

This API will be used by Android Studio layout inspector to
query where a given resource attribute originated from to allow
developers to have an easier way to find what needs to be changed
to affect a given resource attribute.

Test: CTS added in the topic
Bug: 111439551
Change-Id: Ifbb52b39912ed0444030a86164290a1cd4155250

1 files changed, 6 insertions, 1 deletions

diff --git a/libs/androidfw/AttributeResolution.cpp b/libs/androidfw/AttributeResolution.cpp
index 3dc1f2cd56c5..18d74efdbacf 100644
--- a/libs/androidfw/AttributeResolution.cpp
+++ b/libs/androidfw/AttributeResolution.cpp
@@ -286,6 +286,7 @@ void ApplyStyle(Theme* theme, ResXMLParser* xml_parser, uint32_t def_style_attr,
     value.dataType = Res_value::TYPE_NULL;
     value.data = Res_value::DATA_NULL_UNDEFINED;
     config.density = 0;
+    uint32_t source_style_resid = 0;
 
     // Try to find a value for this attribute...  we prioritize values
     // coming from, first XML attributes, then XML style, then default
@@ -309,6 +310,7 @@ void ApplyStyle(Theme* theme, ResXMLParser* xml_parser, uint32_t def_style_attr,
         cookie = entry->cookie;
         type_set_flags = style_flags;
         value = entry->value;
+        source_style_resid = entry->style;
         if (kDebugStyles) {
           ALOGI("-> From style: type=0x%x, data=0x%08x, style=0x%08x", value.dataType, value.data,
               entry->style);
@@ -325,8 +327,10 @@ void ApplyStyle(Theme* theme, ResXMLParser* xml_parser, uint32_t def_style_attr,
         type_set_flags = def_style_flags;
         value = entry->value;
         if (kDebugStyles) {
-          ALOGI("-> From def style: type=0x%x, data=0x%08x", value.dataType, value.data);
+          ALOGI("-> From def style: type=0x%x, data=0x%08x, style=0x%08x", value.dataType, value.data,
+              entry->style);
         }
+        source_style_resid = entry->style;
       }
     }
 
@@ -382,6 +386,7 @@ void ApplyStyle(Theme* theme, ResXMLParser* xml_parser, uint32_t def_style_attr,
     out_values[STYLE_RESOURCE_ID] = resid;
     out_values[STYLE_CHANGING_CONFIGURATIONS] = type_set_flags;
     out_values[STYLE_DENSITY] = config.density;
+    out_values[SYTLE_SOURCE_STYLE] = source_style_resid;
 
     if (value.dataType != Res_value::TYPE_NULL || value.data == Res_value::DATA_NULL_EMPTY) {
       indices_idx++;