NavigationMenuItemView.java revision 0dac8d82e2a249d7c9c42ab259389e11cac15400 
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.view.menu.MenuItemImpl;
29import android.support.v7.view.menu.MenuView;
30import android.util.AttributeSet;
31import android.util.TypedValue;
32import android.view.LayoutInflater;
33import android.view.View;
34import android.view.ViewStub;
35import android.widget.CheckedTextView;
36import android.widget.FrameLayout;
37
38/**
39 * @hide
40 */
41public class NavigationMenuItemView extends ForegroundLinearLayout implements MenuView.ItemView {
42
43    private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
44
45    private final int mIconSize;
46
47    private final CheckedTextView mTextView;
48
49    private FrameLayout mActionArea;
50
51    private MenuItemImpl mItemData;
52
53    private ColorStateList mIconTintList;
54
55    public NavigationMenuItemView(Context context) {
56        this(context, null);
57    }
58
59    public NavigationMenuItemView(Context context, AttributeSet attrs) {
60        this(context, attrs, 0);
61    }
62
63    public NavigationMenuItemView(Context context, AttributeSet attrs, int defStyleAttr) {
64        super(context, attrs, defStyleAttr);
65        setOrientation(HORIZONTAL);
66        LayoutInflater.from(context).inflate(R.layout.design_navigation_menu_item, this, true);
67        mIconSize = context.getResources().getDimensionPixelSize(
68                R.dimen.design_navigation_icon_size);
69        mTextView = (CheckedTextView) findViewById(R.id.design_menu_item_text);
70        mTextView.setDuplicateParentStateEnabled(true);
71    }
72
73    @Override
74    public void initialize(MenuItemImpl itemData, int menuType) {
75        mItemData = itemData;
76
77        setVisibility(itemData.isVisible() ? VISIBLE : GONE);
78
79        if (getBackground() == null) {
80            setBackgroundDrawable(createDefaultBackground());
81        }
82
83        setCheckable(itemData.isCheckable());
84        setChecked(itemData.isChecked());
85        setEnabled(itemData.isEnabled());
86        setTitle(itemData.getTitle());
87        setIcon(itemData.getIcon());
88        setActionView(itemData.getActionView());
89    }
90
91    public void recycle() {
92        if (mActionArea != null) {
93            mActionArea.removeAllViews();
94        }
95        mTextView.setCompoundDrawables(null, null, null, null);
96    }
97
98    private void setActionView(View actionView) {
99        if (mActionArea == null) {
100            mActionArea = (FrameLayout) ((ViewStub) findViewById(
101                    R.id.design_menu_item_action_area_stub)).inflate();
102        }
103        mActionArea.removeAllViews();
104        if (actionView != null) {
105            mActionArea.addView(actionView);
106        }
107    }
108
109    private StateListDrawable createDefaultBackground() {
110        TypedValue value = new TypedValue();
111        if (getContext().getTheme().resolveAttribute(
112                android.support.v7.appcompat.R.attr.colorControlHighlight, value, true)) {
113            StateListDrawable drawable = new StateListDrawable();
114            drawable.addState(CHECKED_STATE_SET, new ColorDrawable(value.data));
115            drawable.addState(EMPTY_STATE_SET, new ColorDrawable(Color.TRANSPARENT));
116            return drawable;
117        }
118        return null;
119    }
120
121    @Override
122    public MenuItemImpl getItemData() {
123        return mItemData;
124    }
125
126    @Override
127    public void setTitle(CharSequence title) {
128        mTextView.setText(title);
129    }
130
131    @Override
132    public void setCheckable(boolean checkable) {
133        refreshDrawableState();
134    }
135
136    @Override
137    public void setChecked(boolean checked) {
138        refreshDrawableState();
139        mTextView.setChecked(checked);
140    }
141
142    @Override
143    public void setShortcut(boolean showShortcut, char shortcutKey) {
144    }
145
146    @Override
147    public void setIcon(Drawable icon) {
148        if (icon != null) {
149            Drawable.ConstantState state = icon.getConstantState();
150            icon = DrawableCompat.wrap(state == null ? icon : state.newDrawable()).mutate();
151            icon.setBounds(0, 0, mIconSize, mIconSize);
152            DrawableCompat.setTintList(icon, mIconTintList);
153        }
154        TextViewCompat.setCompoundDrawablesRelative(mTextView, icon, null, null, null);
155    }
156
157    @Override
158    public boolean prefersCondensedTitle() {
159        return false;
160    }
161
162    @Override
163    public boolean showsIcon() {
164        return true;
165    }
166
167    @Override
168    protected int[] onCreateDrawableState(int extraSpace) {
169        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
170        if (mItemData != null && mItemData.isCheckable() && mItemData.isChecked()) {
171            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
172        }
173        return drawableState;
174    }
175
176    void setIconTintList(ColorStateList tintList) {
177        mIconTintList = tintList;
178        if (mItemData != null) {
179            // Update the icon so that the tint takes effect
180            setIcon(mItemData.getIcon());
181        }
182    }
183
184    public void setTextAppearance(Context context, int textAppearance) {
185        mTextView.setTextAppearance(context, textAppearance);
186    }
187
188    public void setTextColor(ColorStateList colors) {
189        mTextView.setTextColor(colors);
190    }
191
192}
193