NavigationMenuItemView.java revision ca2f07c9cc83b98d73a18da7177044ee147ffb94 
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.support.v7.widget.LinearLayoutCompat;
31import android.util.AttributeSet;
32import android.util.TypedValue;
33import android.view.LayoutInflater;
34import android.view.View;
35import android.view.ViewStub;
36import android.widget.CheckedTextView;
37import android.widget.FrameLayout;
38
39/**
40 * @hide
41 */
42public class NavigationMenuItemView extends LinearLayoutCompat implements MenuView.ItemView {
43
44    private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
45
46    private final int mIconSize;
47
48    private final CheckedTextView mTextView;
49
50    private FrameLayout mActionArea;
51
52    private MenuItemImpl mItemData;
53
54    private ColorStateList mIconTintList;
55
56    public NavigationMenuItemView(Context context) {
57        this(context, null);
58    }
59
60    public NavigationMenuItemView(Context context, AttributeSet attrs) {
61        this(context, attrs, 0);
62    }
63
64    public NavigationMenuItemView(Context context, AttributeSet attrs, int defStyleAttr) {
65        super(context, attrs, defStyleAttr);
66        setOrientation(HORIZONTAL);
67        LayoutInflater.from(context).inflate(R.layout.design_navigation_menu_item, this, true);
68        mIconSize = context.getResources().getDimensionPixelSize(
69                R.dimen.design_navigation_icon_size);
70        mTextView = (CheckedTextView) findViewById(R.id.design_menu_item_text);
71        mTextView.setDuplicateParentStateEnabled(true);
72        // Prevent the action view from stealing the event on the item row.
73        setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS);
74    }
75
76    @Override
77    public void initialize(MenuItemImpl itemData, int menuType) {
78        mItemData = itemData;
79
80        setVisibility(itemData.isVisible() ? VISIBLE : GONE);
81
82        if (getBackground() == null) {
83            setBackgroundDrawable(createDefaultBackground());
84        }
85
86        setCheckable(itemData.isCheckable());
87        setChecked(itemData.isChecked());
88        setEnabled(itemData.isEnabled());
89        setTitle(itemData.getTitle());
90        setIcon(itemData.getIcon());
91        setActionView(itemData.getActionView());
92    }
93
94    private void setActionView(View actionView) {
95        if (mActionArea == null) {
96            mActionArea = (FrameLayout) ((ViewStub) findViewById(
97                    R.id.design_menu_item_action_area_stub)).inflate();
98        }
99        mActionArea.removeAllViews();
100        if (actionView != null) {
101            mActionArea.addView(actionView);
102        }
103    }
104
105    private StateListDrawable createDefaultBackground() {
106        TypedValue value = new TypedValue();
107        if (getContext().getTheme().resolveAttribute(R.attr.colorControlHighlight, value, true)) {
108            StateListDrawable drawable = new StateListDrawable();
109            drawable.addState(CHECKED_STATE_SET, new ColorDrawable(value.data));
110            drawable.addState(EMPTY_STATE_SET, new ColorDrawable(Color.TRANSPARENT));
111            return drawable;
112        }
113        return null;
114    }
115
116    @Override
117    public MenuItemImpl getItemData() {
118        return mItemData;
119    }
120
121    @Override
122    public void setTitle(CharSequence title) {
123        mTextView.setText(title);
124    }
125
126    @Override
127    public void setCheckable(boolean checkable) {
128        refreshDrawableState();
129    }
130
131    @Override
132    public void setChecked(boolean checked) {
133        refreshDrawableState();
134        mTextView.setChecked(checked);
135    }
136
137    @Override
138    public void setShortcut(boolean showShortcut, char shortcutKey) {
139    }
140
141    @Override
142    public void setIcon(Drawable icon) {
143        if (icon != null) {
144            icon = DrawableCompat.wrap(icon.getConstantState().newDrawable()).mutate();
145            icon.setBounds(0, 0, mIconSize, mIconSize);
146            DrawableCompat.setTintList(icon, mIconTintList);
147        }
148        TextViewCompat.setCompoundDrawablesRelative(mTextView, icon, null, null, null);
149    }
150
151    @Override
152    public boolean prefersCondensedTitle() {
153        return false;
154    }
155
156    @Override
157    public boolean showsIcon() {
158        return true;
159    }
160
161    @Override
162    protected int[] onCreateDrawableState(int extraSpace) {
163        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
164        if (mItemData != null && mItemData.isCheckable() && mItemData.isChecked()) {
165            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
166        }
167        return drawableState;
168    }
169
170    void setIconTintList(ColorStateList tintList) {
171        mIconTintList = tintList;
172        if (mItemData != null) {
173            // Update the icon so that the tint takes effect
174            setIcon(mItemData.getIcon());
175        }
176    }
177
178    public void setTextAppearance(Context context, int textAppearance) {
179        mTextView.setTextAppearance(context, textAppearance);
180    }
181
182    public void setTextColor(ColorStateList colors) {
183        mTextView.setTextColor(colors);
184    }
185
186}
187