1 files changed, 77 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/category/CategoryTrack.java b/src/com/android/gallery3d/filtershow/category/CategoryTrack.java
new file mode 100644
index 000000000..ac8245a3b
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/category/CategoryTrack.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2013 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 com.android.gallery3d.filtershow.category;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.database.DataSetObserver;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.View;
+import android.widget.LinearLayout;
+import com.android.gallery3d.R;
+
+public class CategoryTrack extends LinearLayout {
+
+    private CategoryAdapter mAdapter;
+    private int mElemSize;
+    private DataSetObserver mDataSetObserver = new DataSetObserver() {
+        @Override
+        public void onChanged() {
+            super.onChanged();
+            invalidate();
+        }
+        @Override
+        public void onInvalidated() {
+            super.onInvalidated();
+            fillContent();
+        }
+    };
+
+    public CategoryTrack(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.CategoryTrack);
+        mElemSize = a.getDimensionPixelSize(R.styleable.CategoryTrack_iconSize, 0);
+    }
+
+    public void setAdapter(CategoryAdapter adapter) {
+        mAdapter = adapter;
+        mAdapter.registerDataSetObserver(mDataSetObserver);
+        fillContent();
+    }
+
+    public void fillContent() {
+        removeAllViews();
+        mAdapter.setItemWidth(mElemSize);
+        mAdapter.setItemHeight(LayoutParams.MATCH_PARENT);
+        int n = mAdapter.getCount();
+        for (int i = 0; i < n; i++) {
+            View view = mAdapter.getView(i, null, this);
+            addView(view, i);
+        }
+        requestLayout();
+    }
+
+    @Override
+    public void invalidate() {
+        for (int i = 0; i < this.getChildCount(); i++) {
+            View child = getChildAt(i);
+            child.invalidate();
+        }
+    }
+
+}