Add activity token to display system.

First step in adding activity specific information to displays.
Replace CompatibilityInfoHolder with DisplayAdjustmentsHolder that
holds an activity token in addition to the CompatibilityInfo.

Change-Id: Ie113cd8dd9c62e0b5311204e039a4829096bea68

1 files changed, 93 insertions, 0 deletions

diff --git a/core/java/android/view/DisplayAdjustments.java b/core/java/android/view/DisplayAdjustments.java
new file mode 100644
index 0000000..4a234ad
--- /dev/null
+++ b/core/java/android/view/DisplayAdjustments.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.view;
+
+import android.content.res.CompatibilityInfo;
+import android.os.IBinder;
+
+import com.android.internal.util.Objects;
+
+/** @hide */
+public class DisplayAdjustments {
+    public static final boolean DEVELOPMENT_RESOURCES_DEPEND_ON_ACTIVITY_TOKEN = false;
+
+    public static final DisplayAdjustments DEFAULT_DISPLAY_ADJUSTMENTS = new DisplayAdjustments();
+
+    private volatile CompatibilityInfo mCompatInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
+    private volatile IBinder mActivityToken;
+
+    public DisplayAdjustments() {
+    }
+
+    public DisplayAdjustments(IBinder token) {
+        mActivityToken = token;
+    }
+
+    public DisplayAdjustments(CompatibilityInfo compatInfo, IBinder token) {
+        setCompatibilityInfo(compatInfo);
+        mActivityToken = token;
+    }
+
+    public void setCompatibilityInfo(CompatibilityInfo compatInfo) {
+        if (this == DEFAULT_DISPLAY_ADJUSTMENTS) {
+            throw new IllegalArgumentException(
+                    "setCompatbilityInfo: Cannot modify DEFAULT_DISPLAY_ADJUSTMENTS");
+        }
+        if (compatInfo != null && (compatInfo.isScalingRequired()
+                || !compatInfo.supportsScreen())) {
+            mCompatInfo = compatInfo;
+        } else {
+            mCompatInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
+        }
+    }
+
+    public CompatibilityInfo getCompatibilityInfo() {
+        return mCompatInfo;
+    }
+
+    public void setActivityToken(IBinder token) {
+        if (this == DEFAULT_DISPLAY_ADJUSTMENTS) {
+            throw new IllegalArgumentException(
+                    "setActivityToken: Cannot modify DEFAULT_DISPLAY_ADJUSTMENTS");
+        }
+        mActivityToken = token;
+    }
+
+    public IBinder getActivityToken() {
+        return mActivityToken;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 17;
+        hash = hash * 31 + mCompatInfo.hashCode();
+        if (DEVELOPMENT_RESOURCES_DEPEND_ON_ACTIVITY_TOKEN) {
+            hash = hash * 31 + (mActivityToken == null ? 0 : mActivityToken.hashCode());
+        }
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof DisplayAdjustments)) {
+            return false;
+        }
+        DisplayAdjustments daj = (DisplayAdjustments)o;
+        return Objects.equal(daj.mCompatInfo, mCompatInfo) &&
+                Objects.equal(daj.mActivityToken, mActivityToken);
+    }
+}