Quick prototype of new header

 - Has first 4 quick tiles shown in collapsed mode
 - Shows date + settings gear in expanded mode
 - Still has a few gaps (alarms probably don't work)
 - Fix issue with placement of cell data type indicator

Change-Id: I629798b96f4f088fde47c7b67feea304dcc8450c
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QuickQSPanel.java b/packages/SystemUI/src/com/android/systemui/qs/QuickQSPanel.java
new file mode 100644
index 0000000..53d0402
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/QuickQSPanel.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2015 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.systemui.qs;
+
+import android.content.Context;
+import android.content.res.ColorStateList;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import com.android.systemui.R;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+/**
+ * Version of QSPanel that only shows 4 Quick Tiles in the QS Header.
+ */
+public class QuickQSPanel extends QSPanel {
+
+    public QuickQSPanel(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        if (mTileLayout != null) {
+            for (int i = 0; i < mRecords.size(); i++) {
+                mTileLayout.removeTile(mRecords.get(i));
+            }
+            mQsContainer.removeView((View) mTileLayout);
+        }
+        mTileLayout = new HeaderTileLayout(context);
+        mQsContainer.addView((View) mTileLayout, 1 /* Between brightness and footer */);
+    }
+
+    @Override
+    public void onTuningChanged(String key, String newValue) {
+        // No tunings for you.
+        if (key.equals(QS_SHOW_BRIGHTNESS)) {
+            // No Brightness for you.
+            super.onTuningChanged(key, "0");
+        }
+    }
+
+    @Override
+    public void setTiles(Collection<QSTile<?>> tiles) {
+        ArrayList<QSTile<?>> quickTiles = new ArrayList<>();
+        for (QSTile<?> tile : tiles) {
+            if (tile.getTileType() == QSTileView.QS_TYPE_QUICK) {
+                quickTiles.add(tile);
+            }
+            if (quickTiles.size() == 4) {
+                break;
+            }
+        }
+        super.setTiles(quickTiles);
+    }
+
+    private static class HeaderTileLayout extends LinearLayout implements QSTileLayout {
+
+        public HeaderTileLayout(Context context) {
+            super(context);
+            setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
+            int qsCompensation = (int)
+                    context.getResources().getDimension(R.dimen.qs_header_neg_padding);
+            setPadding(0, qsCompensation, 0, 0);
+            ImageView downArrow = new ImageView(context);
+            downArrow.setImageResource(R.drawable.ic_expand_more);
+            downArrow.setImageTintList(ColorStateList.valueOf(context.getResources().getColor(
+                    android.R.color.white, null)));
+            downArrow.setLayoutParams(generateLayoutParams());
+            downArrow.setPadding(0, -qsCompensation, 0, 0);
+            addView(downArrow);
+            setOrientation(LinearLayout.HORIZONTAL);
+        }
+
+        @Override
+        public void addTile(TileRecord tile) {
+            tile.tileView.setLayoutParams(generateLayoutParams());
+            // These shouldn't be normal tiles, but they will be for now so that the circles don't
+            // show up.
+            tile.tileView.setType(QSTileView.QS_TYPE_NORMAL);
+            addView(tile.tileView, getChildCount() - 1 /* Leave icon at end */);
+        }
+
+        private LayoutParams generateLayoutParams() {
+            LayoutParams lp = new LayoutParams(0, LayoutParams.MATCH_PARENT);
+            lp.weight = 1;
+            return lp;
+        }
+
+        @Override
+        public void removeTile(TileRecord tile) {
+            removeView(tile.tileView);
+        }
+
+        @Override
+        public void setTileVisibility(TileRecord tile, int visibility) {
+            tile.tileView.setVisibility(visibility);
+        }
+
+        @Override
+        public int getOffsetTop(TileRecord tile) {
+            return 0;
+        }
+
+        @Override
+        public void updateResources() {
+            // No resources here.
+        }
+    }
+}