Fixing focus issues in Launcher (keyboard support).

Change-Id: Ieafd713393daf5628f229a66441bd3ed293245da

src/com/android/launcher2/FocusOnlyTabWidget.java

@@ -0,0 +1,86 @@
+/*
+ * 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 com.android.launcher2;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.TabWidget;
+
+public class FocusOnlyTabWidget extends TabWidget {
+    public FocusOnlyTabWidget(Context context) {
+        super(context);
+    }
+
+    public FocusOnlyTabWidget(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public FocusOnlyTabWidget(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public View getSelectedTab() {
+        final int count = getTabCount();
+        for (int i = 0; i < count; ++i) {
+            View v = getChildTabViewAt(i);
+            if (v.isSelected()) {
+                return v;
+            }
+        }
+        return null;
+    }
+
+    public int getChildTabIndex(View v) {
+        final int tabCount = getTabCount();
+        for (int i = 0; i < tabCount; ++i) {
+            if (getChildTabViewAt(i) == v) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public void setCurrentTabToFocusedTab() {
+        View tab = null;
+        int index = -1;
+        final int count = getTabCount();
+        for (int i = 0; i < count; ++i) {
+            View v = getChildTabViewAt(i);
+            if (v.hasFocus()) {
+                tab = v;
+                index = i;
+                break;
+            }
+        }
+        if (index > -1) {
+            super.setCurrentTab(index);
+            super.onFocusChange(tab, true);
+        }
+    }
+    public void superOnFocusChange(View v, boolean hasFocus) {
+        super.onFocusChange(v, hasFocus);
+    }
+
+    @Override
+    public void onFocusChange(android.view.View v, boolean hasFocus) {
+        if (v == this && hasFocus && getTabCount() > 0) {
+            getSelectedTab().requestFocus();
+            return;
+        }
+    }
+}