Merge change I5dfb2567 into eclair

* changes:
  Add new rules to layoutopt: UseCompoundDrawables and UselessLayout.

tools/layoutopt/libs/Android.mk

@@ -1,5 +1,5 @@
 # Copyright 2009 The Android Open Source Project
 #
-DDMSLIBS_LOCAL_DIR := $(call my-dir)
-include $(DDMSLIBS_LOCAL_DIR)/uix/Android.mk
+UIX_LOCAL_DIR := $(call my-dir)
+include $(UIX_LOCAL_DIR)/uix/Android.mk
 

tools/layoutopt/libs/uix/src/com/android/layoutopt/uix/LayoutAnalyzer.java

@@ -230,15 +230,14 @@ public class LayoutAnalyzer {
         NodeList list = node.getChildNodes();
         int count = list.getLength();
 
-        // Depth first
+        applyRules(analysis, node);
+
         for (int i = 0; i < count; i++) {
             Node child = list.item(i);
             if (child.getNodeType() == Node.ELEMENT_NODE) {
                 analyze(analysis, child);
             }
         }
-
-        applyRules(analysis, node);
     }
 
     private void applyRules(LayoutAnalysis analysis, Node node) {

tools/layoutopt/libs/uix/src/resources/rules/MergeRootFrameLayout.rule

@@ -12,5 +12,6 @@
 if (xml.isRoot() && xml.is("FrameLayout") && !xml.'@android:background' &&
         !xml.'@android:foreground' && ((node.isWidthFillParent() &&
                 node.isHeightFillParent()) || !xml.'@android:layout_gravity')) {
-    analysis << [node: node, description: "The root-level <FrameLayout/> can be replaced with <merge/>"]
+    analysis << [node: node, description: "The root-level <FrameLayout/> can be " +
+            "replaced with <merge/>"]
 }

tools/layoutopt/libs/uix/src/resources/rules/TooManyLevels.rule

@@ -6,5 +6,5 @@
 // - The depth of the layout is > 10
 
 if (xml.isRoot() && (depth = xml.depth()) > 10) {
-    analysis << "This layout has too many nested layouts: ${depth} levels!"
+    analysis << "This layout has too many nested layouts: ${depth} levels, it should have <= 10!"
 }

tools/layoutopt/libs/uix/src/resources/rules/TooManyViews.rule

@@ -6,5 +6,5 @@
 // - The document contains more than 80 views
 
 if (xml.isRoot && (size = xml.'**'.size()) > 80) {
-    analysis << "This layout has too many views: ${size} views!"
+    analysis << "This layout has too many views: ${size} views, it should have <= 80!"
 }

tools/layoutopt/libs/uix/src/resources/rules/UseCompoundDrawables.rule

@@ -0,0 +1,15 @@
+// Rule: UseCompoundDrawables
+//
+// Description: Checks whether the current node can be replaced by a TextView
+//              using compound drawables.
+//
+// Conditions:
+// - The node is a LinearLayout
+// - The node has two children, ImageView and TextView
+// - The ImageView does not have a weight
+
+if (xml.is("LinearLayout") && xml['*'].size() == 2 && xml.'TextView'.size() == 1 &&
+        xml.'ImageView'.size() == 1 && !xml.'ImageView'.'@android:layout_weight') {
+    analysis << [node: node, description: "This tag and its children can be replaced by one " +
+            "<TextView/> and a compound drawable for the image"]
+}

tools/layoutopt/libs/uix/src/resources/rules/UselessLayout.rule

@@ -0,0 +1,18 @@
+// Rule: UselessLayout
+//
+// Description: Checks whether current node can be removed.
+//
+// Conditions:
+// - The node has children
+// - The node does not have siblings
+// - The node does not have a background or its parent does not have a
+//   background or neither the node and its parent have a background
+// - The parent is not a <merge/>
+
+if (!xml.isRoot() && xml['..'].name() != "merge" && xml['..']['*'].size() == 1 &&
+        xml['*'].size() > 0 && ((xml.'@android:background' || xml['..'].'@android:background') ||
+        (!xml.'@android:background' && !xml['..'].'@android:background'))) {
+    analysis << [node: node, description: "This ${xml.name()} layout or " +
+            "its ${xml['..'].name()} parent is " +
+            "${xml['..'].'@android:id' ? "possibly useless" : "useless"}"]
+}

tools/layoutopt/samples/compound.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent">
+
+	<LinearLayout
+		android:layout_width="fill_parent"
+	    android:layout_height="fill_parent">
+	
+		<ImageView
+			android:layout_width="wrap_content"
+		    android:layout_height="wrap_content" />
+	
+		<TextView
+			android:layout_width="wrap_content"
+		    android:layout_height="wrap_content" />
+	
+	</LinearLayout>
+
+</FrameLayout>

tools/layoutopt/samples/useless.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent">
+
+	<LinearLayout
+		android:layout_width="fill_parent"
+	    android:layout_height="fill_parent">
+	
+		<TextView
+			android:layout_width="wrap_content"
+		    android:layout_height="wrap_content" />
+	
+	</LinearLayout>
+
+</FrameLayout>