NavigationMenuItemView.java revision d3ee2c7d22c0cb204ea9077fa9e64511266d6799 
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
17package android.support.design.internal;
18
19import android.content.Context;
20import android.content.res.ColorStateList;
21import android.graphics.Color;
22import android.graphics.drawable.ColorDrawable;
23import android.graphics.drawable.Drawable;
24import android.graphics.drawable.StateListDrawable;
25import android.support.design.R;
26import android.support.v4.graphics.drawable.DrawableCompat;
27import android.support.v4.widget.TextViewCompat;
28import android.support.v7.internal.view.menu.MenuItemImpl;
29import android.support.v7.internal.view.menu.MenuView;
30import android.util.AttributeSet;
31import android.util.TypedValue;
32import android.view.View;
33import android.widget.TextView;
34
35/**
36 * @hide
37 */
38public class NavigationMenuItemView extends TextView implements MenuView.ItemView {
39
40    private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
41
42    private static final int[] DISABLED_STATE_SET = {-android.R.attr.state_enabled};
43
44    private int mIconSize;
45
46    private MenuItemImpl mItemData;
47
48    private ColorStateList mTintList;
49
50    public NavigationMenuItemView(Context context) {
51        this(context, null);
52    }
53
54    public NavigationMenuItemView(Context context, AttributeSet attrs) {
55        this(context, attrs, 0);
56    }
57
58    public NavigationMenuItemView(Context context, AttributeSet attrs, int defStyleAttr) {
59        super(context, attrs, defStyleAttr);
60        mIconSize = context.getResources().getDimensionPixelSize(R.dimen.drawer_icon_size);
61    }
62
63    @Override
64    public void initialize(MenuItemImpl itemData, int menuType) {
65        mItemData = itemData;
66
67        setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE);
68
69        if (mTintList == null && (itemData.isChecked() || !itemData.isEnabled())) {
70            mTintList = createDefaultTintList();
71            setTextColor(mTintList);
72        }
73        if (getBackground() == null) {
74            setBackgroundDrawable(createDefaultBackground());
75        }
76
77        setCheckable(itemData.isCheckable());
78        setChecked(itemData.isChecked());
79        setTitle(itemData.getTitle());
80        setIcon(itemData.getIcon());
81        setEnabled(itemData.isEnabled());
82    }
83
84    private ColorStateList createDefaultTintList() {
85        TypedValue value = new TypedValue();
86        if (!getContext().getTheme()
87                .resolveAttribute(android.R.attr.textColorPrimary, value, true)) {
88            return null;
89        }
90        ColorStateList base = getResources().getColorStateList(value.resourceId);
91        if (!getContext().getTheme().resolveAttribute(R.attr.colorPrimary, value, true)) {
92            return null;
93        }
94        int colorPrimary = value.data;
95        int defaultColor = base.getDefaultColor();
96        return new ColorStateList(new int[][]{
97                DISABLED_STATE_SET,
98                CHECKED_STATE_SET,
99                EMPTY_STATE_SET
100        }, new int[]{
101                base.getColorForState(DISABLED_STATE_SET, defaultColor),
102                colorPrimary,
103                defaultColor
104        });
105    }
106
107    private StateListDrawable createDefaultBackground() {
108        TypedValue value = new TypedValue();
109        if (getContext().getTheme()
110                .resolveAttribute(R.attr.colorControlHighlight, value, true)) {
111            StateListDrawable drawable = new StateListDrawable();
112            drawable.addState(CHECKED_STATE_SET, new ColorDrawable(value.data));
113            drawable.addState(EMPTY_STATE_SET, new ColorDrawable(Color.TRANSPARENT));
114            return drawable;
115        }
116        return null;
117    }
118
119    @Override
120    public MenuItemImpl getItemData() {
121        return mItemData;
122    }
123
124    @Override
125    public void setTitle(CharSequence title) {
126        setText(title);
127    }
128
129    @Override
130    public void setCheckable(boolean checkable) {
131        if (checkable && mTintList != null) {
132            setTextColor(mTintList);
133        }
134    }
135
136    @Override
137    public void setChecked(boolean checked) {
138        refreshDrawableState();
139    }
140
141    @Override
142    public void setShortcut(boolean showShortcut, char shortcutKey) {
143    }
144
145    @Override
146    public void setIcon(Drawable icon) {
147        if (icon != null) {
148            icon = DrawableCompat.wrap(icon);
149            icon.setBounds(0, 0, mIconSize, mIconSize);
150            icon = icon.mutate();
151            if (mItemData.isChecked() || !mItemData.isEnabled()) {
152                DrawableCompat.setTintList(icon, mTintList);
153            } else {
154                DrawableCompat.setTintList(icon, null);
155            }
156        }
157        TextViewCompat.setCompoundDrawablesRelative(this, icon, null, null, null);
158    }
159
160    @Override
161    public boolean prefersCondensedTitle() {
162        return false;
163    }
164
165    @Override
166    public boolean showsIcon() {
167        return true;
168    }
169
170    @Override
171    protected int[] onCreateDrawableState(int extraSpace) {
172        if (mItemData != null && mItemData.isChecked()) {
173            return mergeDrawableStates(super.onCreateDrawableState(extraSpace + 1),
174                    CHECKED_STATE_SET);
175        } else {
176            return super.onCreateDrawableState(extraSpace);
177        }
178    }
179
180    public void setTintList(ColorStateList tintList) {
181        mTintList = tintList;
182        if (tintList != null) {
183            setTextColor(tintList);
184        }
185    }
186
187}
188