PlaybackControlsRowPresenter.java revision 7ab1edf2b49f3cdcb9db7a1c60d0dc1e17a9aef7 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14package android.support.v17.leanback.widget;
15
16import android.support.v17.leanback.R;
17import android.content.Context;
18import android.graphics.Color;
19import android.util.TypedValue;
20import android.view.LayoutInflater;
21import android.view.View;
22import android.view.ViewGroup;
23import android.view.ViewGroup.LayoutParams;
24import android.view.ViewGroup.MarginLayoutParams;
25import android.widget.ImageView;
26
27/**
28 * A PlaybackControlsRowPresenter renders a {@link PlaybackControlsRow} to display a
29 * series of playback control buttons. Typically this row will be the first row in a fragment
30 * such as the {@link android.support.v17.leanback.app.PlaybackOverlayFragment
31 * PlaybackControlsFragment}.
32 */
33public class PlaybackControlsRowPresenter extends RowPresenter {
34
35    /**
36     * A ViewHolder for the PlaybackControlsRow.
37     */
38    public static class ViewHolder extends RowPresenter.ViewHolder {
39        final ViewGroup mCard;
40        final ImageView mImageView;
41        final ViewGroup mDescriptionDock;
42        final ViewGroup mControlsDock;
43        final ViewGroup mSecondaryControlsDock;
44        final View mSpacer;
45        int mCardHeight;
46        int mControlsDockMarginStart;
47        int mControlsDockMarginEnd;
48        Presenter.ViewHolder mDescriptionVh;
49        Presenter.ViewHolder mControlsVh;
50        Presenter.ViewHolder mSecondaryControlsVh;
51        PlaybackControlsPresenter.BoundData mControlsBoundData =
52                new PlaybackControlsPresenter.BoundData();
53        ControlBarPresenter.BoundData mSecondaryBoundData = new ControlBarPresenter.BoundData();
54
55        ViewHolder(View rootView) {
56            super(rootView);
57            mCard = (ViewGroup) rootView.findViewById(R.id.controls_card);
58            mImageView = (ImageView) rootView.findViewById(R.id.image);
59            mDescriptionDock = (ViewGroup) rootView.findViewById(R.id.description_dock);
60            mControlsDock = (ViewGroup) rootView.findViewById(R.id.controls_dock);
61            mSecondaryControlsDock =
62                    (ViewGroup) rootView.findViewById(R.id.secondary_controls_dock);
63            mSpacer = rootView.findViewById(R.id.spacer);
64        }
65
66        Presenter getPresenter(Object item, boolean primary) {
67            ObjectAdapter adapter = primary ?
68                    ((PlaybackControlsRow) getRow()).getPrimaryActionsAdapter() :
69                            ((PlaybackControlsRow) getRow()).getSecondaryActionsAdapter();
70            if (adapter.getPresenterSelector() instanceof ControlButtonPresenterSelector) {
71                ControlButtonPresenterSelector selector =
72                        (ControlButtonPresenterSelector) adapter.getPresenterSelector();
73                return primary ? selector.getPrimaryPresenter() :
74                    selector.getSecondaryPresenter();
75            }
76            return adapter.getPresenter(item);
77        }
78    }
79
80    private int mBackgroundColor = Color.TRANSPARENT;
81    private boolean mBackgroundColorSet;
82    private boolean mSecondaryActionsHidden;
83    private Presenter mDescriptionPresenter;
84    private PlaybackControlsPresenter mPlaybackControlsPresenter;
85    private ControlBarPresenter mSecondaryControlsPresenter;
86
87    /**
88     * Constructor for a PlaybackControlsRowPresenter.
89     *
90     * @param descriptionPresenter Presenter for displaying item details.
91     */
92    public PlaybackControlsRowPresenter(Presenter descriptionPresenter) {
93        setHeaderPresenter(null);
94        setSelectEffectEnabled(false);
95
96        mDescriptionPresenter = descriptionPresenter;
97        mPlaybackControlsPresenter = new PlaybackControlsPresenter(R.layout.lb_playback_controls);
98        mSecondaryControlsPresenter = new ControlBarPresenter(R.layout.lb_control_bar);
99    }
100
101    /**
102     * Constructor for a PlaybackControlsRowPresenter.
103     */
104    public PlaybackControlsRowPresenter() {
105        this(null);
106    }
107
108    /**
109     * Sets the listener for {@link Action} click events.
110     */
111    public void setOnActionClickedListener(OnActionClickedListener listener) {
112        mPlaybackControlsPresenter.setOnActionClickedListener(listener);
113        mSecondaryControlsPresenter.setOnActionClickedListener(listener);
114    }
115
116    /**
117     * Gets the listener for {@link Action} click events.
118     */
119    public OnActionClickedListener getOnActionClickedListener() {
120        return mPlaybackControlsPresenter.getOnActionClickedListener();
121    }
122
123    /**
124     * Sets the background color.  If not set, a default from the theme will be used.
125     */
126    public void setBackgroundColor(int color) {
127        mBackgroundColor = color;
128        mBackgroundColorSet = true;
129    }
130
131    /**
132     * Returns the background color.  If no background color was set, transparent
133     * is returned.
134     */
135    public int getBackgroundColor() {
136        return mBackgroundColor;
137    }
138
139    /**
140     * Sets the secondary actions to be hidden behind a "more actions" button.
141     * When "more actions" is selected, the primary actions are replaced with
142     * the secondary actions.
143     */
144    public void setSecondaryActionsHidden(boolean hidden) {
145        mSecondaryActionsHidden = hidden;
146    }
147
148    /**
149     * Returns true if secondary actions are hidden.
150     */
151    public boolean areSecondaryActionsHidden() {
152        return mSecondaryActionsHidden;
153    }
154
155    private int getDefaultBackgroundColor(Context context) {
156        TypedValue outValue = new TypedValue();
157        context.getTheme().resolveAttribute(R.attr.defaultBrandColor, outValue, true);
158        return context.getResources().getColor(outValue.resourceId);
159    }
160
161    @Override
162    protected RowPresenter.ViewHolder createRowViewHolder(ViewGroup parent) {
163        View v = LayoutInflater.from(parent.getContext())
164            .inflate(R.layout.lb_playback_controls_row, parent, false);
165        ViewHolder vh = new ViewHolder(v);
166        initRow(vh);
167        return vh;
168    }
169
170    private void initRow(ViewHolder vh) {
171        vh.mCardHeight = vh.mCard.getLayoutParams().height;
172
173        MarginLayoutParams lp = (MarginLayoutParams) vh.mControlsDock.getLayoutParams();
174        vh.mControlsDockMarginStart = lp.getMarginStart();
175        vh.mControlsDockMarginEnd = lp.getMarginEnd();
176
177        if (mDescriptionPresenter != null) {
178            vh.mDescriptionVh = mDescriptionPresenter.onCreateViewHolder(vh.mDescriptionDock);
179            vh.mDescriptionDock.addView(vh.mDescriptionVh.view);
180        }
181
182        vh.mControlsVh = mPlaybackControlsPresenter.onCreateViewHolder(vh.mControlsDock);
183        vh.mControlsDock.addView(vh.mControlsVh.view);
184
185        vh.mSecondaryControlsVh =
186                mSecondaryControlsPresenter.onCreateViewHolder(vh.mSecondaryControlsDock);
187        if (!mSecondaryActionsHidden) {
188            vh.mSecondaryControlsDock.addView(vh.mSecondaryControlsVh.view);
189        }
190    }
191
192    private void setBackground(View view) {
193        view.setBackgroundColor(mBackgroundColorSet ?
194                mBackgroundColor : getDefaultBackgroundColor(view.getContext()));
195        ShadowHelper.getInstance().setZ(view, 0f);
196    }
197
198    @Override
199    protected void onBindRowViewHolder(RowPresenter.ViewHolder holder, Object item) {
200        super.onBindRowViewHolder(holder, item);
201
202        ViewHolder vh = (ViewHolder) holder;
203        PlaybackControlsRow row = (PlaybackControlsRow) vh.getRow();
204
205        mPlaybackControlsPresenter.enableSecondaryActions(mSecondaryActionsHidden);
206
207        if (row.getItem() == null) {
208            LayoutParams lp = vh.mCard.getLayoutParams();
209            lp.height = LayoutParams.WRAP_CONTENT;
210            vh.mCard.setLayoutParams(lp);
211            vh.mDescriptionDock.setVisibility(View.GONE);
212            vh.mSpacer.setVisibility(View.GONE);
213        } else {
214            LayoutParams lp = vh.mCard.getLayoutParams();
215            lp.height = vh.mCardHeight;
216            vh.mCard.setLayoutParams(lp);
217            vh.mDescriptionDock.setVisibility(View.VISIBLE);
218            if (vh.mDescriptionVh != null) {
219                mDescriptionPresenter.onBindViewHolder(vh.mDescriptionVh, row.getItem());
220            }
221            vh.mSpacer.setVisibility(View.VISIBLE);
222        }
223
224        MarginLayoutParams lp = (MarginLayoutParams) vh.mControlsDock.getLayoutParams();
225        if (row.getImageDrawable() == null || row.getItem() == null) {
226            setBackground(vh.mControlsDock);
227            vh.mCard.setBackgroundColor(Color.TRANSPARENT);
228            lp.setMarginStart(0);
229            lp.setMarginEnd(0);
230        } else {
231            vh.mImageView.setImageDrawable(row.getImageDrawable());
232            setBackground(vh.mCard);
233            vh.mControlsDock.setBackgroundColor(Color.TRANSPARENT);
234            lp.setMarginStart(vh.mControlsDockMarginStart);
235            lp.setMarginEnd(vh.mControlsDockMarginEnd);
236        }
237        vh.mControlsDock.setLayoutParams(lp);
238
239        vh.mControlsBoundData.adapter = row.getPrimaryActionsAdapter();
240        vh.mControlsBoundData.secondaryActionsAdapter = row.getSecondaryActionsAdapter();
241        vh.mControlsBoundData.presenter = vh.getPresenter(
242                row.getPrimaryActionsAdapter().get(0), true);
243        mPlaybackControlsPresenter.onBindViewHolder(vh.mControlsVh, vh.mControlsBoundData);
244
245        vh.mSecondaryBoundData.adapter = row.getSecondaryActionsAdapter();
246        vh.mSecondaryBoundData.presenter = vh.getPresenter(
247                row.getSecondaryActionsAdapter().get(0), false);
248        mSecondaryControlsPresenter.onBindViewHolder(vh.mSecondaryControlsVh,
249                vh.mSecondaryBoundData);
250    }
251
252    @Override
253    protected void onUnbindRowViewHolder(RowPresenter.ViewHolder holder) {
254        super.onUnbindRowViewHolder(holder);
255
256        ViewHolder vh = (ViewHolder) holder;
257        if (vh.mDescriptionVh != null) {
258            mDescriptionPresenter.onUnbindViewHolder(vh.mDescriptionVh);
259        }
260        mPlaybackControlsPresenter.onUnbindViewHolder(vh.mControlsVh);
261        mSecondaryControlsPresenter.onUnbindViewHolder(vh.mSecondaryControlsVh);
262    }
263}
264