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.v7.app;
18
19import android.app.Dialog;
20import android.content.Context;
21import android.os.Bundle;
22import android.support.annotation.LayoutRes;
23import android.support.annotation.Nullable;
24import android.support.v7.appcompat.R;
25import android.support.v7.view.ActionMode;
26import android.util.TypedValue;
27import android.view.View;
28import android.view.ViewGroup;
29
30/**
31 * Base class for AppCompat themed {@link android.app.Dialog}s.
32 */
33public class AppCompatDialog extends Dialog implements AppCompatCallback {
34
35    private AppCompatDelegate mDelegate;
36
37    public AppCompatDialog(Context context) {
38        this(context, 0);
39    }
40
41    public AppCompatDialog(Context context, int theme) {
42        super(context, getThemeResId(context, theme));
43
44        // This is a bit weird, but Dialog's are typically created and setup before being shown,
45        // which means that we can't rely on onCreate() being called before a content view is set.
46        // To workaround this, we call onCreate(null) in the ctor, and then again as usual in
47        // onCreate().
48        getDelegate().onCreate(null);
49    }
50
51    protected AppCompatDialog(Context context, boolean cancelable,
52            OnCancelListener cancelListener) {
53        super(context, cancelable, cancelListener);
54    }
55
56    @Override
57    protected void onCreate(Bundle savedInstanceState) {
58        getDelegate().installViewFactory();
59        super.onCreate(savedInstanceState);
60        getDelegate().onCreate(savedInstanceState);
61    }
62
63    /**
64     * Support library version of {@link android.app.Dialog#getActionBar}.
65     *
66     * <p>Retrieve a reference to this dialog's ActionBar.
67     *
68     * @return The Dialog's ActionBar, or null if it does not have one.
69     */
70    public ActionBar getSupportActionBar() {
71        return getDelegate().getSupportActionBar();
72    }
73
74    @Override
75    public void setContentView(@LayoutRes int layoutResID) {
76        getDelegate().setContentView(layoutResID);
77    }
78
79    @Override
80    public void setContentView(View view) {
81        getDelegate().setContentView(view);
82    }
83
84    @Override
85    public void setContentView(View view, ViewGroup.LayoutParams params) {
86        getDelegate().setContentView(view, params);
87    }
88
89    @Override
90    public void setTitle(CharSequence title) {
91        super.setTitle(title);
92        getDelegate().setTitle(title);
93    }
94
95    @Override
96    public void setTitle(int titleId) {
97        super.setTitle(titleId);
98        getDelegate().setTitle(getContext().getString(titleId));
99    }
100
101    @Override
102    public void addContentView(View view, ViewGroup.LayoutParams params) {
103        getDelegate().addContentView(view, params);
104    }
105
106    @Override
107    protected void onStop() {
108        super.onStop();
109        getDelegate().onStop();
110    }
111
112    /**
113     * Enable extended support library window features.
114     * <p>
115     * This is a convenience for calling
116     * {@link android.view.Window#requestFeature getWindow().requestFeature()}.
117     * </p>
118     *
119     * @param featureId The desired feature as defined in {@link android.view.Window} or
120     *                  {@link android.support.v4.view.WindowCompat}.
121     * @return Returns true if the requested feature is supported and now enabled.
122     *
123     * @see android.app.Dialog#requestWindowFeature
124     * @see android.view.Window#requestFeature
125     */
126    public boolean supportRequestWindowFeature(int featureId) {
127        return getDelegate().requestWindowFeature(featureId);
128    }
129
130    /**
131     * @hide
132     */
133    public void invalidateOptionsMenu() {
134        getDelegate().invalidateOptionsMenu();
135    }
136
137    /**
138     * @return The {@link AppCompatDelegate} being used by this Dialog.
139     */
140    public AppCompatDelegate getDelegate() {
141        if (mDelegate == null) {
142            mDelegate = AppCompatDelegate.create(this, this);
143        }
144        return mDelegate;
145    }
146
147    private static int getThemeResId(Context context, int themeId) {
148        if (themeId == 0) {
149            // If the provided theme is 0, then retrieve the dialogTheme from our theme
150            TypedValue outValue = new TypedValue();
151            context.getTheme().resolveAttribute(R.attr.dialogTheme, outValue, true);
152            themeId = outValue.resourceId;
153        }
154        return themeId;
155    }
156
157    @Override
158    public void onSupportActionModeStarted(ActionMode mode) {
159    }
160
161    @Override
162    public void onSupportActionModeFinished(ActionMode mode) {
163    }
164
165    @Nullable
166    @Override
167    public ActionMode onWindowStartingSupportActionMode(ActionMode.Callback callback) {
168        return null;
169    }
170}
171