1 /*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2020 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 By using JUCE, you agree to the terms of both the JUCE 6 End-User License
11 Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
12
13 End User License Agreement: www.juce.com/juce-6-licence
14 Privacy Policy: www.juce.com/juce-privacy-policy
15
16 Or: You may also use this code under the terms of the GPL v3 (see
17 www.gnu.org/licenses).
18
19 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
20 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
21 DISCLAIMED.
22
23 ==============================================================================
24 */
25
26 namespace juce
27 {
28
29 class FileChooser::Native : public FileChooser::Pimpl
30 {
31 public:
32 //==============================================================================
Native(FileChooser & fileChooser,int flags)33 Native (FileChooser& fileChooser, int flags) : owner (fileChooser)
34 {
35 if (currentFileChooser == nullptr)
36 {
37 currentFileChooser = this;
38 auto* env = getEnv();
39
40 auto sdkVersion = getAndroidSDKVersion();
41 auto saveMode = ((flags & FileBrowserComponent::saveMode) != 0);
42 auto selectsDirectories = ((flags & FileBrowserComponent::canSelectDirectories) != 0);
43
44 // You cannot save a directory
45 jassert (! (saveMode && selectsDirectories));
46
47 if (sdkVersion < 19)
48 {
49 // native save dialogs are only supported in Android versions >= 19
50 jassert (! saveMode);
51 saveMode = false;
52 }
53
54 if (sdkVersion < 21)
55 {
56 // native directory chooser dialogs are only supported in Android versions >= 21
57 jassert (! selectsDirectories);
58 selectsDirectories = false;
59 }
60
61 const char* action = (selectsDirectories ? "android.intent.action.OPEN_DOCUMENT_TREE"
62 : (saveMode ? "android.intent.action.CREATE_DOCUMENT"
63 : (sdkVersion >= 19 ? "android.intent.action.OPEN_DOCUMENT"
64 : "android.intent.action.GET_CONTENT")));
65
66
67 intent = GlobalRef (LocalRef<jobject> (env->NewObject (AndroidIntent, AndroidIntent.constructWithString,
68 javaString (action).get())));
69
70 if (owner.startingFile != File())
71 {
72 if (saveMode && (! owner.startingFile.isDirectory()))
73 env->CallObjectMethod (intent.get(), AndroidIntent.putExtraString,
74 javaString ("android.intent.extra.TITLE").get(),
75 javaString (owner.startingFile.getFileName()).get());
76
77
78 URL url (owner.startingFile);
79 LocalRef<jobject> uri (env->CallStaticObjectMethod (AndroidUri, AndroidUri.parse,
80 javaString (url.toString (true)).get()));
81
82 if (uri)
83 env->CallObjectMethod (intent.get(), AndroidIntent.putExtraParcelable,
84 javaString ("android.provider.extra.INITIAL_URI").get(),
85 uri.get());
86 }
87
88
89 if (! selectsDirectories)
90 {
91 env->CallObjectMethod (intent.get(), AndroidIntent.addCategory,
92 javaString ("android.intent.category.OPENABLE").get());
93
94 auto mimeTypes = convertFiltersToMimeTypes (owner.filters);
95
96 if (mimeTypes.size() == 1)
97 {
98 env->CallObjectMethod (intent.get(), AndroidIntent.setType, javaString (mimeTypes[0]).get());
99 }
100 else
101 {
102 String mimeGroup = "*";
103
104 if (mimeTypes.size() > 0)
105 {
106 mimeGroup = mimeTypes[0].upToFirstOccurrenceOf ("/", false, false);
107 auto allMimeTypesHaveSameGroup = true;
108
109 LocalRef<jobjectArray> jMimeTypes (env->NewObjectArray (mimeTypes.size(), JavaString,
110 javaString("").get()));
111
112 for (int i = 0; i < mimeTypes.size(); ++i)
113 {
114 env->SetObjectArrayElement (jMimeTypes.get(), i, javaString (mimeTypes[i]).get());
115
116 if (mimeGroup != mimeTypes[i].upToFirstOccurrenceOf ("/", false, false))
117 allMimeTypesHaveSameGroup = false;
118 }
119
120 env->CallObjectMethod (intent.get(), AndroidIntent.putExtraStrings,
121 javaString ("android.intent.extra.MIME_TYPES").get(),
122 jMimeTypes.get());
123
124 if (! allMimeTypesHaveSameGroup)
125 mimeGroup = "*";
126 }
127
128 env->CallObjectMethod (intent.get(), AndroidIntent.setType, javaString (mimeGroup + "/*").get());
129 }
130 }
131 }
132 else
133 jassertfalse; // there can only be a single file chooser
134 }
135
~Native()136 ~Native() override
137 {
138 masterReference.clear();
139 currentFileChooser = nullptr;
140 }
141
runModally()142 void runModally() override
143 {
144 // Android does not support modal file choosers
145 jassertfalse;
146 }
147
launch()148 void launch() override
149 {
150 auto* env = getEnv();
151
152 if (currentFileChooser != nullptr)
153 {
154 WeakReference<Native> myself (this);
155
156 startAndroidActivityForResult (LocalRef<jobject> (env->NewLocalRef (intent.get())), /*READ_REQUEST_CODE*/ 42,
157 [myself] (int requestCode, int resultCode, LocalRef<jobject> intentData) mutable
158 {
159 if (myself != nullptr)
160 myself->onActivityResult (requestCode, resultCode, intentData);
161 });
162 }
163 else
164 {
165 jassertfalse; // There is already a file chooser running
166 }
167 }
168
onActivityResult(int,int resultCode,const LocalRef<jobject> & intentData)169 void onActivityResult (int /*requestCode*/, int resultCode, const LocalRef<jobject>& intentData)
170 {
171 currentFileChooser = nullptr;
172 auto* env = getEnv();
173
174 Array<URL> chosenURLs;
175
176 if (resultCode == /*Activity.RESULT_OK*/ -1 && intentData != nullptr)
177 {
178 LocalRef<jobject> uri (env->CallObjectMethod (intentData.get(), AndroidIntent.getData));
179
180 if (uri != nullptr)
181 {
182 auto jStr = (jstring) env->CallObjectMethod (uri, JavaObject.toString);
183
184 if (jStr != nullptr)
185 chosenURLs.add (URL (juceString (env, jStr)));
186 }
187 }
188
189 owner.finished (chosenURLs);
190 }
191
192 static Native* currentFileChooser;
193
convertFiltersToMimeTypes(const String & fileFilters)194 static StringArray convertFiltersToMimeTypes (const String& fileFilters)
195 {
196 StringArray result;
197 auto wildcards = StringArray::fromTokens (fileFilters, ";", "");
198
199 for (auto wildcard : wildcards)
200 {
201 if (wildcard.upToLastOccurrenceOf (".", false, false) == "*")
202 {
203 auto extension = wildcard.fromLastOccurrenceOf (".", false, false);
204
205 result.addArray (getMimeTypesForFileExtension (extension));
206 }
207 }
208
209 result.removeDuplicates (false);
210 return result;
211 }
212
213 private:
214 JUCE_DECLARE_WEAK_REFERENCEABLE (Native)
215
216 FileChooser& owner;
217 GlobalRef intent;
218 };
219
220 FileChooser::Native* FileChooser::Native::currentFileChooser = nullptr;
221
showPlatformDialog(FileChooser & owner,int flags,FilePreviewComponent *)222 FileChooser::Pimpl* FileChooser::showPlatformDialog (FileChooser& owner, int flags,
223 FilePreviewComponent*)
224 {
225 if (FileChooser::Native::currentFileChooser == nullptr)
226 return new FileChooser::Native (owner, flags);
227
228 // there can only be one file chooser on Android at a once
229 jassertfalse;
230 return nullptr;
231 }
232
isPlatformDialogAvailable()233 bool FileChooser::isPlatformDialogAvailable()
234 {
235 #if JUCE_DISABLE_NATIVE_FILECHOOSERS
236 return false;
237 #else
238 return true;
239 #endif
240 }
241
242 } // namespace juce
243