1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.tv.common.ui.setup;
18 
19 import android.os.Bundle;
20 import android.support.v17.leanback.app.GuidedStepFragment;
21 import android.support.v17.leanback.widget.GuidanceStylist;
22 import android.support.v17.leanback.widget.GuidedAction;
23 import android.support.v17.leanback.widget.VerticalGridView;
24 import android.view.LayoutInflater;
25 import android.view.View;
26 import android.view.ViewGroup;
27 import android.view.ViewGroup.MarginLayoutParams;
28 import android.widget.LinearLayout;
29 
30 import com.android.tv.common.R;
31 
32 /**
33  * A fragment for channel source info/setup.
34  */
35 public abstract class SetupGuidedStepFragment extends GuidedStepFragment {
36     /**
37      * Key of the argument which indicate whether the parent of this fragment has three panes.
38      *
39      * <p>Value type: boolean
40      */
41     public static final String KEY_THREE_PANE = "key_three_pane";
42 
43     @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)44     public View onCreateView(LayoutInflater inflater, ViewGroup container,
45             Bundle savedInstanceState) {
46         View view = super.onCreateView(inflater, container, savedInstanceState);
47         Bundle arguments = getArguments();
48         view.findViewById(R.id.action_fragment_root).setPadding(0, 0, 0, 0);
49         LinearLayout.LayoutParams guidanceLayoutParams = (LinearLayout.LayoutParams)
50                 view.findViewById(R.id.content_fragment).getLayoutParams();
51         guidanceLayoutParams.weight = 0;
52         if (arguments != null && arguments.getBoolean(KEY_THREE_PANE, false)) {
53             // Content fragment.
54             guidanceLayoutParams.width = getResources().getDimensionPixelOffset(
55                     R.dimen.setup_guidedstep_guidance_section_width_3pane);
56             int doneButtonWidth = getResources().getDimensionPixelOffset(
57                     R.dimen.setup_done_button_container_width);
58             // Guided actions list
59             View list = view.findViewById(R.id.guidedactions_list);
60             MarginLayoutParams marginLayoutParams = (MarginLayoutParams) list.getLayoutParams();
61             // Use content view to check layout direction while view is being created.
62             if (getResources().getConfiguration().getLayoutDirection()
63                     == View.LAYOUT_DIRECTION_LTR) {
64                 marginLayoutParams.rightMargin = doneButtonWidth;
65             } else {
66                 marginLayoutParams.leftMargin = doneButtonWidth;
67             }
68         } else {
69             // Content fragment.
70             guidanceLayoutParams.width = getResources().getDimensionPixelOffset(
71                     R.dimen.setup_guidedstep_guidance_section_width_2pane);
72         }
73         // gridView Alignment
74         VerticalGridView gridView = getGuidedActionsStylist().getActionsGridView();
75         // Workaround of b/28274171
76         // TODO: Remove the following line once b/28274171 is resolved.
77         gridView.setFocusable(true);
78         int offset = getResources().getDimensionPixelOffset(
79                 R.dimen.setup_guidedactions_selector_margin_top);
80         gridView.setWindowAlignmentOffset(offset);
81         gridView.setWindowAlignmentOffsetPercent(0);
82         gridView.setItemAlignmentOffsetPercent(0);
83         ((ViewGroup) view.findViewById(R.id.guidedactions_list)).setTransitionGroup(false);
84         // Needed for the shared element transition.
85         // content_frame is defined in leanback.
86         ViewGroup group = (ViewGroup) view.findViewById(R.id.content_frame);
87         group.setClipChildren(false);
88         group.setClipToPadding(false);
89         // Workaround b/26205201
90         view.findViewById(R.id.guidedactions_list2).setFocusable(false);
91         return view;
92     }
93 
94     @Override
onCreateGuidanceStylist()95     public GuidanceStylist onCreateGuidanceStylist() {
96         return new GuidanceStylist() {
97             @Override
98             public View onCreateView(LayoutInflater inflater, ViewGroup container,
99                     Guidance guidance) {
100                 View view = super.onCreateView(inflater, container, guidance);
101                 if (guidance.getIconDrawable() == null) {
102                     // Icon view should not take up space when we don't use image.
103                     getIconView().setVisibility(View.GONE);
104                 }
105                 return view;
106             }
107         };
108     }
109 
110     abstract protected String getActionCategory();
111 
112     @Override
113     public void onGuidedActionClicked(GuidedAction action) {
114         SetupActionHelper.onActionClick(this, getActionCategory(), (int) action.getId());
115     }
116 
117     @Override
118     protected void onProvideFragmentTransitions() {
119         // Don't use the fragment transition defined in GuidedStepFragment.
120     }
121 
122     @Override
123     public boolean isFocusOutEndAllowed() {
124         return true;
125     }
126 }
127