1 files changed, 141 insertions, 0 deletions
diff --git a/src/com/android/launcher3/AppDrawerScrubber.java b/src/com/android/launcher3/AppDrawerScrubber.java
new file mode 100644
index 000000000..41c3199b5
--- /dev/null
+++ b/src/com/android/launcher3/AppDrawerScrubber.java
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod 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.launcher3;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.LinearLayoutManager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.ListAdapter;
+import android.widget.ListView;
+import android.widget.SectionIndexer;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+public class AppDrawerScrubber extends LinearLayout implements OnClickListener {
+
+    private final int SCRUBBER_INDICATOR_DISPLAY_DURATION = 200;
+    private final float SCRUBBER_INDICATOR_DISPLAY_TRANSLATIONY = 20f;
+
+    private AppDrawerListAdapter mAdapter;
+    private RecyclerView mListView;
+    private TextView mFirstIndicator, mLastIndicator;
+    private TextView mScrubberIndicator;
+    private SeekBar mSeekBar;
+    private String[] mSections;
+    private LinearLayoutManager mLayoutManager;
+
+    public AppDrawerScrubber(Context context) {
+        super(context);
+        LayoutInflater.from(context).inflate(R.layout.scrub_layout, this);
+        mFirstIndicator = ((TextView) findViewById(R.id.firstSection));
+        mFirstIndicator.setOnClickListener(this);
+        mLastIndicator = ((TextView) findViewById(R.id.lastSection));
+        mLastIndicator.setOnClickListener(this);
+        mScrubberIndicator = (TextView) findViewById(R.id.scrubberIndicator);
+        mSeekBar = (SeekBar) findViewById(R.id.scrubber);
+        init();
+    }
+
+    public void updateSections() {
+        mSections = (String[]) mAdapter.getSections();
+        mSeekBar.setMax(mSections.length - 1);
+        mFirstIndicator.setText(mSections[0]);
+        mLastIndicator.setText(mSections[mSections.length - 1]);
+    }
+
+    public void setSource(RecyclerView listView) {
+        mListView = listView;
+        mAdapter = (AppDrawerListAdapter) listView.getAdapter();
+        mLayoutManager = (LinearLayoutManager) listView.getLayoutManager();
+    }
+
+    private boolean isReady() {
+        return mListView != null &&
+                mAdapter != null &&
+                mSections != null;
+    }
+
+    private void init() {
+        mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, final int progress, boolean fromUser) {
+                if (!isReady()) {
+                    return;
+                }
+                resetScrubber();
+                mScrubberIndicator.setTranslationX((progress * seekBar.getWidth()) /
+                        mSections.length);
+                String section = String.valueOf(mSections[progress]);
+                mLayoutManager.scrollToPositionWithOffset(
+                        mAdapter.getPositionForSection(progress), 0);
+                mScrubberIndicator.setText(section);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+                if (!isReady()) {
+                    return;
+                }
+                resetScrubber();
+                mScrubberIndicator.setAlpha(1f);
+                mScrubberIndicator.setVisibility(View.VISIBLE);
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                if (!isReady()) {
+                    return;
+                }
+                resetScrubber();
+                mScrubberIndicator.animate()
+                        .alpha(0f)
+                        .translationYBy(SCRUBBER_INDICATOR_DISPLAY_TRANSLATIONY)
+                        .setDuration(SCRUBBER_INDICATOR_DISPLAY_DURATION)
+                        .setListener(new AnimatorListenerAdapter() {
+                            @Override
+                            public void onAnimationEnd(Animator animation) {
+                                mScrubberIndicator.setVisibility(View.INVISIBLE);
+                            }
+                        });
+                }
+
+            private void resetScrubber() {
+                mScrubberIndicator.animate().cancel();
+                mScrubberIndicator.setTranslationY(0f);
+            }
+        });
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (v == mFirstIndicator) {
+            int positionForFirstSection = mAdapter.getPositionForSection(0);
+            mLayoutManager.scrollToPositionWithOffset(positionForFirstSection, 0);
+        } else if (v == mLastIndicator) {
+            int positionForLastSection = mAdapter.getPositionForSection(mSections.length - 1);
+            mLayoutManager.scrollToPositionWithOffset(positionForLastSection, 0);
+        }
+    }
+}
+\ No newline at end of file