packages/SystemUI/src/com/android/systemui/qs/QuickQSPanel.java

/*
 * 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.
        }
    }
}