NavigationMenuItemView.java revision 64bcb674cc45ab712a591d4f540d5c13404f3b83 
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.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(R.attr.colorControlHighlight, value, true)) {
112            StateListDrawable drawable = new StateListDrawable();
113            drawable.addState(CHECKED_STATE_SET, new ColorDrawable(value.data));
114            drawable.addState(EMPTY_STATE_SET, new ColorDrawable(Color.TRANSPARENT));
115            return drawable;
116        }
117        return null;
118    }
119
120    @Override
121    public MenuItemImpl getItemData() {
122        return mItemData;
123    }
124
125    @Override
126    public void setTitle(CharSequence title) {
127        mTextView.setText(title);
128    }
129
130    @Override
131    public void setCheckable(boolean checkable) {
132        refreshDrawableState();
133    }
134
135    @Override
136    public void setChecked(boolean checked) {
137        refreshDrawableState();
138        mTextView.setChecked(checked);
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.getConstantState().newDrawable()).mutate();
149            icon.setBounds(0, 0, mIconSize, mIconSize);
150            DrawableCompat.setTintList(icon, mIconTintList);
151        }
152        TextViewCompat.setCompoundDrawablesRelative(mTextView, icon, null, null, null);
153    }
154
155    @Override
156    public boolean prefersCondensedTitle() {
157        return false;
158    }
159
160    @Override
161    public boolean showsIcon() {
162        return true;
163    }
164
165    @Override
166    protected int[] onCreateDrawableState(int extraSpace) {
167        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
168        if (mItemData != null && mItemData.isCheckable() && mItemData.isChecked()) {
169            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
170        }
171        return drawableState;
172    }
173
174    void setIconTintList(ColorStateList tintList) {
175        mIconTintList = tintList;
176        if (mItemData != null) {
177            // Update the icon so that the tint takes effect
178            setIcon(mItemData.getIcon());
179        }
180    }
181
182    public void setTextAppearance(Context context, int textAppearance) {
183        mTextView.setTextAppearance(context, textAppearance);
184    }
185
186    public void setTextColor(ColorStateList colors) {
187        mTextView.setTextColor(colors);
188    }
189
190}
191