1 /*
2  * Copyright (C) 2014 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 androidx.appcompat.widget;
18 
19 import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP;
20 
21 import android.content.Context;
22 import android.content.res.ColorStateList;
23 import android.graphics.PorterDuff;
24 import android.graphics.drawable.Drawable;
25 import android.util.AttributeSet;
26 import android.view.inputmethod.EditorInfo;
27 import android.view.inputmethod.InputConnection;
28 import android.widget.AutoCompleteTextView;
29 
30 import androidx.annotation.DrawableRes;
31 import androidx.annotation.Nullable;
32 import androidx.annotation.RestrictTo;
33 import androidx.appcompat.R;
34 import androidx.appcompat.content.res.AppCompatResources;
35 import androidx.core.view.TintableBackgroundView;
36 
37 /**
38  * A {@link AutoCompleteTextView} which supports compatible features on older versions of the
39  * platform, including:
40  * <ul>
41  *     <li>Allows dynamic tint of its background via the background tint methods in
42  *     {@link androidx.core.view.ViewCompat}.</li>
43  *     <li>Allows setting of the background tint using {@link R.attr#backgroundTint} and
44  *     {@link R.attr#backgroundTintMode}.</li>
45  * </ul>
46  *
47  * <p>This will automatically be used when you use {@link AutoCompleteTextView} in your layouts
48  * and the top-level activity / dialog is provided by
49  * <a href="{@docRoot}topic/libraries/support-library/packages.html#v7-appcompat">appcompat</a>.
50  * You should only need to manually use this class when writing custom views.</p>
51  */
52 public class AppCompatAutoCompleteTextView extends AutoCompleteTextView implements
53         TintableBackgroundView {
54 
55     private static final int[] TINT_ATTRS = {
56             android.R.attr.popupBackground
57     };
58 
59     private final AppCompatBackgroundHelper mBackgroundTintHelper;
60     private final AppCompatTextHelper mTextHelper;
61 
AppCompatAutoCompleteTextView(Context context)62     public AppCompatAutoCompleteTextView(Context context) {
63         this(context, null);
64     }
65 
AppCompatAutoCompleteTextView(Context context, AttributeSet attrs)66     public AppCompatAutoCompleteTextView(Context context, AttributeSet attrs) {
67         this(context, attrs, R.attr.autoCompleteTextViewStyle);
68     }
69 
AppCompatAutoCompleteTextView(Context context, AttributeSet attrs, int defStyleAttr)70     public AppCompatAutoCompleteTextView(Context context, AttributeSet attrs, int defStyleAttr) {
71         super(TintContextWrapper.wrap(context), attrs, defStyleAttr);
72 
73         TintTypedArray a = TintTypedArray.obtainStyledAttributes(getContext(), attrs,
74                 TINT_ATTRS, defStyleAttr, 0);
75         if (a.hasValue(0)) {
76             setDropDownBackgroundDrawable(a.getDrawable(0));
77         }
78         a.recycle();
79 
80         mBackgroundTintHelper = new AppCompatBackgroundHelper(this);
81         mBackgroundTintHelper.loadFromAttributes(attrs, defStyleAttr);
82 
83         mTextHelper = new AppCompatTextHelper(this);
84         mTextHelper.loadFromAttributes(attrs, defStyleAttr);
85         mTextHelper.applyCompoundDrawablesTints();
86     }
87 
88     @Override
setDropDownBackgroundResource(@rawableRes int resId)89     public void setDropDownBackgroundResource(@DrawableRes int resId) {
90         setDropDownBackgroundDrawable(AppCompatResources.getDrawable(getContext(), resId));
91     }
92 
93     @Override
setBackgroundResource(@rawableRes int resId)94     public void setBackgroundResource(@DrawableRes int resId) {
95         super.setBackgroundResource(resId);
96         if (mBackgroundTintHelper != null) {
97             mBackgroundTintHelper.onSetBackgroundResource(resId);
98         }
99     }
100 
101     @Override
setBackgroundDrawable(Drawable background)102     public void setBackgroundDrawable(Drawable background) {
103         super.setBackgroundDrawable(background);
104         if (mBackgroundTintHelper != null) {
105             mBackgroundTintHelper.onSetBackgroundDrawable(background);
106         }
107     }
108 
109     /**
110      * This should be accessed via
111      * {@link androidx.core.view.ViewCompat#setBackgroundTintList(android.view.View, ColorStateList)}
112      *
113      * @hide
114      */
115     @RestrictTo(LIBRARY_GROUP)
116     @Override
setSupportBackgroundTintList(@ullable ColorStateList tint)117     public void setSupportBackgroundTintList(@Nullable ColorStateList tint) {
118         if (mBackgroundTintHelper != null) {
119             mBackgroundTintHelper.setSupportBackgroundTintList(tint);
120         }
121     }
122 
123     /**
124      * This should be accessed via
125      * {@link androidx.core.view.ViewCompat#getBackgroundTintList(android.view.View)}
126      *
127      * @hide
128      */
129     @RestrictTo(LIBRARY_GROUP)
130     @Override
131     @Nullable
getSupportBackgroundTintList()132     public ColorStateList getSupportBackgroundTintList() {
133         return mBackgroundTintHelper != null
134                 ? mBackgroundTintHelper.getSupportBackgroundTintList() : null;
135     }
136 
137     /**
138      * This should be accessed via
139      * {@link androidx.core.view.ViewCompat#setBackgroundTintMode(android.view.View, PorterDuff.Mode)}
140      *
141      * @hide
142      */
143     @RestrictTo(LIBRARY_GROUP)
144     @Override
setSupportBackgroundTintMode(@ullable PorterDuff.Mode tintMode)145     public void setSupportBackgroundTintMode(@Nullable PorterDuff.Mode tintMode) {
146         if (mBackgroundTintHelper != null) {
147             mBackgroundTintHelper.setSupportBackgroundTintMode(tintMode);
148         }
149     }
150 
151     /**
152      * This should be accessed via
153      * {@link androidx.core.view.ViewCompat#getBackgroundTintMode(android.view.View)}
154      *
155      * @hide
156      */
157     @RestrictTo(LIBRARY_GROUP)
158     @Override
159     @Nullable
getSupportBackgroundTintMode()160     public PorterDuff.Mode getSupportBackgroundTintMode() {
161         return mBackgroundTintHelper != null
162                 ? mBackgroundTintHelper.getSupportBackgroundTintMode() : null;
163     }
164 
165     @Override
drawableStateChanged()166     protected void drawableStateChanged() {
167         super.drawableStateChanged();
168         if (mBackgroundTintHelper != null) {
169             mBackgroundTintHelper.applySupportBackgroundTint();
170         }
171         if (mTextHelper != null) {
172             mTextHelper.applyCompoundDrawablesTints();
173         }
174     }
175 
176     @Override
setTextAppearance(Context context, int resId)177     public void setTextAppearance(Context context, int resId) {
178         super.setTextAppearance(context, resId);
179         if (mTextHelper != null) {
180             mTextHelper.onSetTextAppearance(context, resId);
181         }
182     }
183 
184     @Override
onCreateInputConnection(EditorInfo outAttrs)185     public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
186         return AppCompatHintHelper.onCreateInputConnection(super.onCreateInputConnection(outAttrs),
187                 outAttrs, this);
188     }
189 }
190