Fill FrameLayout children on drop depending on metadata

Adds a drop handler to the FrameLaoyut rule which looks up the
metadata for the dropped child, and sets the width and/or height to
fill based on that metadata.  For example, a LinearLayout dropped into
a FrameLayout (or say a ViewFlipper which inherits from it), then the
layout will fill. A button on the other hand will not fill, and an
EditText will fill horizontally but not vertically, and so on.

Change-Id: I65a9379fa7128cc9c68d9bfd1849b0f1dc0f4a86

1 files changed, 23 insertions, 0 deletions

diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/FrameLayoutRule.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/FrameLayoutRule.java
index 655eee2..af001c6 100755
--- a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/FrameLayoutRule.java
+++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/FrameLayoutRule.java
@@ -16,7 +16,10 @@
 
 package com.android.ide.common.layout;
 
+import static com.android.ide.common.layout.LayoutConstants.ANDROID_URI;
 import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_GRAVITY;
+import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_HEIGHT;
+import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_WIDTH;
 
 import com.android.ide.common.api.DrawingStyle;
 import com.android.ide.common.api.DropFeedback;
@@ -25,10 +28,13 @@ import com.android.ide.common.api.IFeedbackPainter;
 import com.android.ide.common.api.IGraphics;
 import com.android.ide.common.api.INode;
 import com.android.ide.common.api.INodeHandler;
+import com.android.ide.common.api.IViewMetadata;
 import com.android.ide.common.api.IViewRule;
+import com.android.ide.common.api.InsertType;
 import com.android.ide.common.api.MenuAction;
 import com.android.ide.common.api.Point;
 import com.android.ide.common.api.Rect;
+import com.android.ide.common.api.IViewMetadata.FillPreference;
 import com.android.util.Pair;
 
 import java.util.List;
@@ -159,4 +165,21 @@ public class FrameLayoutRule extends BaseLayoutRule {
             actions.add(createGravityAction(children, ATTR_LAYOUT_GRAVITY));
         }
     }
+
+    @Override
+    public void onChildInserted(INode node, INode parent, InsertType insertType) {
+        // Look at the fill preferences and fill embedded layouts etc
+        String fqcn = node.getFqcn();
+        IViewMetadata metadata = mRulesEngine.getMetadata(fqcn);
+        if (metadata != null) {
+            FillPreference fill = metadata.getFillPreference();
+            String fillParent = getFillParentValueName();
+            if (fill.fillHorizontally(true)) {
+                node.setAttribute(ANDROID_URI, ATTR_LAYOUT_WIDTH, fillParent);
+            }
+            if (fill.fillVertically(false)) {
+                node.setAttribute(ANDROID_URI, ATTR_LAYOUT_HEIGHT, fillParent);
+            }
+        }
+    }
 }