LayoutLib API: update adapter binding callbacks.

Change-Id: I85be09fd7541da366c858ea04d7c2c4b53948475

1 files changed, 30 insertions, 5 deletions

diff --git a/layoutlib_api/src/com/android/ide/common/rendering/api/IProjectCallback.java b/layoutlib_api/src/com/android/ide/common/rendering/api/IProjectCallback.java
index 1a16c48..144d317 100644
--- a/layoutlib_api/src/com/android/ide/common/rendering/api/IProjectCallback.java
+++ b/layoutlib_api/src/com/android/ide/common/rendering/api/IProjectCallback.java
@@ -19,6 +19,8 @@ package com.android.ide.common.rendering.api;
 import com.android.resources.ResourceType;
 import com.android.util.Pair;
 
+import java.net.URL;
+
 /**
  * Callback for project information needed by the Layout Library.
  * Classes implementing this interface provide methods giving access to some project data, like
@@ -26,6 +28,23 @@ import com.android.util.Pair;
  */
 public interface IProjectCallback {
 
+    public enum ViewAttribute {
+        TEXT(String.class),
+        IS_CHECKED(Boolean.class),
+        SRC(URL.class),
+        COLOR(Integer.class);
+
+        private final Class<?> mClass;
+
+        private ViewAttribute(Class<?> theClass) {
+            mClass = theClass;
+        }
+
+        public Class<?> getAttributeClass() {
+            return mClass;
+        }
+    }
+
     /**
      * Loads a custom view with the given constructor signature and arguments.
      * @param name The fully qualified name of the class.
@@ -77,17 +96,22 @@ public interface IProjectCallback {
     /**
      * Returns the value of an item used by an adapter.
      * @param adapterView The {@link ResourceReference} for the adapter view info.
+     * @param adapterCookie the view cookie for this particular view.
      * @param itemRef the {@link ResourceReference} for the layout used by the adapter item.
      * @param fullPosition the position of the item in the full list.
      * @param typePosition the position of the item if only items of the same type are considered.
      *     If there is only one type of items, this is the same as <var>position</var>.
      * @param viewRef The {@link ResourceReference} for the view we're trying to fill.
-     * @param viewClass the class name of the view we're trying to fill.
+     * @param ViewAttribute the attribute being queried.
+     * @param defaultValue the default value for this attribute. The object class matches the
+     *      class associated with the {@link ViewAttribute}.
      * @return the item value or null if there's no value.
+     *
+     * @see ViewAttribute#getAttributeClass()
      */
-    String getAdapterItemValue(ResourceReference adapterView, ResourceReference itemRef,
-            int fullPosition, int typePosition,
-            ResourceReference viewRef, String viewClass);
+    Object getAdapterItemValue(ResourceReference adapterView, Object adapterCookie,
+            ResourceReference itemRef, int fullPosition, int typePosition,
+            ResourceReference viewRef, ViewAttribute viewAttribute, Object defaultValue);
 
     /**
      * Returns an adapter binding for a given adapter view.
@@ -95,7 +119,8 @@ public interface IProjectCallback {
      * the given {@link ResourceReference} already.
      *
      * @param adapterView the adapter view to return the adapter binding for.
+     * @param adapterCookie the view cookie for this particular view.
      * @return an adapter binding for the given view or null if there's no data.
      */
-    AdapterBinding getAdapterBinding(ResourceReference adapterView);
+    AdapterBinding getAdapterBinding(ResourceReference adapterView, Object adapterCookie);
 }