ActionPresenterSelector.java revision 8e3566285de4ac771d6188f62fe947e23d371a3d 
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.text.TextUtils;
18import android.view.LayoutInflater;
19import android.view.View;
20import android.view.ViewGroup;
21import android.widget.Button;
22
23class ActionPresenterSelector extends PresenterSelector {
24
25    private final Presenter mOneLineActionPresenter = new OneLineActionPresenter();
26    private final Presenter mTwoLineActionPresenter = new TwoLineActionPresenter();
27
28    @Override
29    public Presenter getPresenter(Object item) {
30        Action action = (Action) item;
31        if (TextUtils.isEmpty(action.getLabel2())) {
32            return mOneLineActionPresenter;
33        } else {
34            return mTwoLineActionPresenter;
35        }
36    }
37
38    static class ActionViewHolder extends Presenter.ViewHolder {
39        Action mAction;
40        Button mButton;
41
42        public ActionViewHolder(View view) {
43            super(view);
44            mButton = (Button) view.findViewById(R.id.lb_action_button);
45        }
46    }
47
48    class OneLineActionPresenter extends Presenter {
49        @Override
50        public ViewHolder onCreateViewHolder(ViewGroup parent) {
51            View v = LayoutInflater.from(parent.getContext())
52                .inflate(R.layout.lb_action_1_line, parent, false);
53            return new ActionViewHolder(v);
54        }
55
56        @Override
57        public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
58            Action action = (Action) item;
59            ActionViewHolder vh = (ActionViewHolder) viewHolder;
60            vh.mAction = action;
61            vh.mButton.setText(action.getLabel1());
62        }
63
64        @Override
65        public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
66            ((ActionViewHolder) viewHolder).mAction = null;
67        }
68    }
69
70    class TwoLineActionPresenter extends Presenter {
71        @Override
72        public ViewHolder onCreateViewHolder(ViewGroup parent) {
73            View v = LayoutInflater.from(parent.getContext())
74                .inflate(R.layout.lb_action_2_lines, parent, false);
75            return new ActionViewHolder(v);
76        }
77
78        @Override
79        public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
80            Action action = (Action) item;
81            ActionViewHolder vh = (ActionViewHolder) viewHolder;
82            vh.mAction = action;
83
84            if (action.getIcon() != null) {
85                final int startPadding = vh.view.getResources()
86                        .getDimensionPixelSize(R.dimen.lb_action_with_icon_padding_start);
87                final int endPadding = vh.view.getResources()
88                        .getDimensionPixelSize(R.dimen.lb_action_with_icon_padding_end);
89                vh.view.setPaddingRelative(startPadding, 0, endPadding, 0);
90            } else {
91                final int padding = vh.view.getResources()
92                        .getDimensionPixelSize(R.dimen.lb_action_padding_horizontal);
93                vh.view.setPaddingRelative(padding, 0, padding, 0);
94            }
95            vh.mButton.setCompoundDrawablesWithIntrinsicBounds(action.getIcon(), null, null, null);
96
97            CharSequence line1 = action.getLabel1();
98            CharSequence line2 = action.getLabel2();
99            if (TextUtils.isEmpty(line1)) {
100                vh.mButton.setText(line2);
101            } else if (TextUtils.isEmpty(line2)) {
102                vh.mButton.setText(line1);
103            } else {
104                vh.mButton.setText(line1 + "\n" + line2);
105            }
106        }
107
108        @Override
109        public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
110            ActionViewHolder vh = (ActionViewHolder) viewHolder;
111            vh.mButton.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
112            vh.view.setPadding(0, 0, 0, 0);
113            vh.mAction = null;
114        }
115    }
116}
117